67results about How to "Increase wind pressure" 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 invention discloses a coaxial reverse rotation fog gun fan in the technical field of environmental protection equipment. The coaxial reverse rotation fog gun fan comprises a forward rotation impeller, a reverse rotation impeller, a motor, a transmission mechanism and a connecting support. The forward rotation impeller and the reverse rotation impeller are coaxially arranged, the motor is used for driving the transmission mechanism, and the transmission mechanism and the transmission mechanism are installed in the barrel through the connecting support. According to the fog gun fan, gear meshing and synchronous belt wheel transmission modes are adopted, so that the forward-rotating impeller and the reverse-rotating impeller rotate on the same axis at a high speed, secondary energy loss caused by vortex of airflow and impact on a flow guide plate is avoided, and compared with a fog gun fan with two stages of impellers in the same rotating direction, the fog gun fan has the advantages that the structure is simple; under the same rotating speed, the fog gun fan with the coaxial shaft counter-rotating impeller structure is stronger in outlet airflow and high in efficiency, the noise generated by the airflow is reduced, the air volume and the air pressure are improved, and the range of a fog gun is increased.

The invention provides a mobile air conditioner capable of changing the cold air outlet direction and provided with obliquely-installed coaxial cold and hot air ducts, which comprises a shell serving as a mounting carrier, an air inlet, an air outlet, an air outlet, an air inlet and an air outlet, the shell is hollow, and a mounting cavity is formed in the shell; the volute assembly is obliquely arranged in the mounting cavity, the volute assembly comprises an upper volute assembly and a lower volute assembly located below the upper volute assembly, an upper volute cavity and a lower volute cavity are formed in the upper volute assembly and the lower volute assembly respectively, the upper volute cavity and the lower volute cavity are coaxially arranged, and the axis of the upper volute cavity and the axis of the lower volute cavity incline to the horizontal plane; an exhaust channel is arranged on the side wall of the upper volute cavity, extends upwards, is in butt joint with a first air outlet in the top of the shell and is used for discharging air. The mobile air conditioner capable of changing the cold air outlet direction and provided with the obliquely-installed coaxial cold and hot air ducts is compact in structure, small in size, low in manufacturing cost and use cost, convenient to assemble, high in air outlet speed, long in air supply distance, low in working noise, good in use effect and long in service life.

The utility model discloses a direct current type fan, relates to the technical field of fans, aims to solve the problem that a traditional fan is small in air pressure and air volume, and comprises a barrel-shaped outer shell, a fan body is installed inside the outer shell, an air outlet cover is installed at the top end of the outer shell, an air outlet is formed in the air outlet cover, and an air inlet is formed in the outer shell. An air inlet cover is installed at the bottom end of the outer shell, a plurality of air inlets are formed in the air inlet cover, and the air outlet cover, the outer shell and the air inlet cover are coaxially arranged.

The utility model discloses a top air outlet type air conditioner outdoor unit, and relates to the technical field of air conditioners. The top air outlet type air conditioner outdoor unit comprises a machine shell, an outdoor heat exchanger, a compressor and an outdoor fan. The outdoor fan comprises a hub and blades arranged on the peripheral face of the hub. Each blade comprises a blade root, a blade top, a front edge and a rear edge; the blade root is connected with the hub; the blade top is radially far away from the hub relative to the blade root; the front edge is located at the front end of the blade rotation direction and connected with the blade top and the blade root. The tail edge is located at the rear end of the blade rotation direction and connected with the blade top and the blade root. The trailing edge is limited to form a trailing edge contour line; the trailing edge profile curve comprises a first bent part and a second bent part, the first bent part protrudes towards the side away from the leading edge, and the second bent part sinks towards the side close to the leading edge, so that a noise reduction notch is formed; and the first bent part and the second bent part are connected in sequence. According to the top air outlet type air conditioner outdoor unit, the blade tail edge shape and / or the blade shape are / is optimized, so that noise generated when the fan operates is reduced.

The present invention discloses a counter-rotating fan, comprising a first-stage impeller and a second-stage impeller with opposite rotation directions, the first-stage impeller and the second-stage impeller are driven by two independent driving mechanisms, the first-stage impeller comprises a plurality of first blades, the second-stage impeller comprises a plurality of second blades, the pressure surface of the first blade is arranged opposite to the suction surface of the second blade, and the bending directions of the first blade and the second blade are opposite. According to the counter-rotating fan of the present invention, since the two-stage impellers rotate in opposite directions and the blades are bent in opposite directions, the airflows generated by the two-stage impellers rotate in opposite directions, and the two airflows may de-rotate and continue to run when they meet, so under the condition of a reasonable speed ratio, the fan can output a high-pressure, high-force wind field, and can also output a large-flow, long-distance wind field. In addition, since the driving mechanisms of the two-stage impellers are independent of each other, the counter-rotating fan can obtain an adjustable and controllable wind field, which improves user satisfaction.

A wind-pressure-resistant and impact-resistant device for a photovoltaic module comprises a battery piece, a packaging layer, a transparent covering layer, a back plate and a reinforcing structure, the packaging layer is arranged above the battery piece, the transparent covering layer covers the packaging layer, the back plate is arranged below the battery piece, a supporting structure is arranged on the periphery of the side face of the transparent covering layer, and the reinforcing structure is arranged on the periphery of the side face of the transparent covering layer. Corrugated structures are arranged at the contact positions of the side faces of the battery piece and the packaging layer and the supporting structure, and a reinforcing structure is installed at the bottom of the back plate. The reinforcing structure comprises an outer frame surrounding the outside and honeycomb units evenly expanded and filled inside, hexagonal supporting pieces are arranged on the periphery of each honeycomb unit, each honeycomb unit comprises the hexagonal supporting pieces and a sealing plate fixed to the back faces of the supporting pieces, and the supporting pieces are two sets of triangular supporting plates which are in butt joint.

The invention relates to the technical field of construction site dust removal, and discloses a building engineering construction dust removal device which comprises a water tank and further comprises two stand columns connected to the front side and the rear side of the top of the water tank correspondingly; the fog gun barrel is hinged to the upper portion of the stand column and used for adjusting the inclination angle of the fog gun barrel; the spraying diameter adjusting mechanism is arranged in the fog gun barrel and used for adjusting the spraying diameter; the separation mechanism is arranged in the water tank and is used for adsorbing, separating and recycling the sewage; and the adjusting mechanism is arranged at the top of the water tank and is used for adjusting the upper part of the fog gun barrel and adjusting the spraying angle of the fog gun barrel. By means of the arranged spraying diameter adjusting mechanism, an adjusting ring can move in the fog gun barrel and is matched with an annular elastic piece to abut against the spraying head, and then the spraying angle of the spraying head can be changed, so that the effects of dispersed spraying and gathered spraying are achieved, and the purpose of dust falling is achieved by adapting to different spraying heights.

The utility model discloses a multi-layer staggered wind gathering mesh enclosure fan which comprises a wind gathering mesh enclosure multi-layer regular and irregular crossed structure, one end of the wind gathering mesh enclosure multi-layer structure is provided with an installation cavity playing a fixing role, and the end portion of the installation cavity is provided with a wind inlet cover. The air duct is lengthened through the multi-layer cross structure of the air gathering net cover, the air pressure is enhanced through the multi-layer cross structure of the air gathering net cover, the air gathering opening is formed in the end of the multi-layer cross structure of the air gathering net cover, and the air outlet end of the air gathering opening is subjected to necking treatment, so that the effect of increasing the air pressure is achieved; and the fan assembly is fixedly arranged in the mounting cavity, and the air inlet end of the fan assembly corresponds to the air inlet cover of the multi-layer structure of the air gathering net cover in position. The multi-layer cross structure of the wind gathering mesh enclosure is beneficial to concentrating wind power, so that the wind passes through the fan mesh enclosure in a more concentrated manner; and through the interaction of the first air gathering net and the second air gathering net, the formed air channel can further guide and concentrate the air flow, and the air pressure and the air volume of the whole system can be improved.

The invention discloses an air duct type air conditioner which aims at improving the air outlet amount of a centrifugal fan in an air duct type air conditioner. The air pipe type air conditioner comprises an indoor unit, a shell of the indoor unit is provided with a mounting cavity, and an indoor heat exchanger and a fan assembly are located in the mounting cavity. The fan assembly comprises a volute and a centrifugal impeller, and the volute is provided with an air outlet. The exhaust outlet is arranged towards the indoor heat exchanger in the first linear direction, and the exhaust outlet is arranged close to one side of the mounting cavity in the second linear direction. The centrifugal impeller is installed in the volute and used for driving air to flow through the indoor heat exchanger. The first linear direction, the second linear direction and the axial direction of the centrifugal impeller are perpendicular to each other. In the axial direction of the centrifugal impeller, the value range of the ratio K1 of the width size of the volute to the width size of the centrifugal impeller is that K1 is larger than or equal to 1.18 and smaller than 1.24, or K1 is larger than or equal to 1.24 and smaller than or equal to 1.32. The air conditioner is used for improving the heat exchange efficiency of the indoor unit.

The utility model discloses a biomass boiler grate bottom air blowing device which is characterized in that a rocker air regulator is arranged at the center line of an air collecting pipe, one end of a telescopic rod of the rocker air regulator is in threaded connection with a threaded sleeve installed on an outer side plate of an air duct, an air plate is installed at the other end of the telescopic rod, and the air plate located in the air duct is aligned with an air opening of the air collecting pipe; bottom air of the fire grate enters the air flue, enters the air collecting pipe from the two ends of the air collecting pipe and is strongly sprayed out from the blowing nozzle connected with the air collecting pipe, the air force is more concentrated, the penetrating power is higher, it is guaranteed that fuel is fully combusted, black smoke is avoided, the combustion effect of the boiler is better, and the heat efficiency is higher.

The utility model discloses an outward-flat inward-opening type extremely simple door frame, which relates to the technical field of door frames and comprises a main sleeve and an auxiliary sleeve, an installation clamping groove is arranged on the rear side of the main sleeve, the auxiliary sleeve is fixedly arranged on the rear side of the main sleeve through the installation clamping groove, a first cavity and a second cavity are arranged inside the main sleeve, and the first cavity and the second cavity are communicated with each other. A bolt groove is formed in the second cavity, the cross section of the main sleeve is of a T-shaped structure, and a sealing strip is fixedly installed on one side of the back face of the main sleeve. According to the characteristic that the door is flat outside and open inside, the first cavity and the second cavity are arranged to increase the cross section area of the sectional material, a good supporting system is formed, and the deformation risk caused by long-term opening and closing can be resisted; the wall thickness of the main sleeve and the wall thickness of the auxiliary sleeve range from 1 mm to 3 mm. The millimeter-level thickness breaks through the visual decorous feeling of a traditional door frame, the ultra-narrow frame is achieved through the precision machining technology, the space permeability can be improved to the maximum degree, and the ultra-narrow frame is particularly suitable for modern simple and light luxury style decoration.

The utility model discloses a kind of impeller and extractor hood, belong to kitchen utensil field. To solve the problems of large air flow resistance of existing impeller blade, low efficiency and easy to accumulate oil. The utility model includes coaxially arranged first fixed sheet and second fixed sheet, the first fixed sheet is provided with a plurality of blades arranged around its axis between the second fixed sheet, wherein, blade side is streamline, the first fixed sheet is equipped with installation shell, and shaft sleeve and auxiliary installation component are set on installation shell. The technical scheme is by adopting streamline blade, effectively reduce air flow resistance, improve impeller operating efficiency and oil fume separation effect, reduce oil accumulation;At the same time, auxiliary installation component is convenient for the quick preliminary fixation of impeller on motor shaft, simplifies installation process.

The invention relates to a carbon fiber quality control light cyclone fan which comprises a fan body, a carbon fiber fan blade and a driving part, the carbon fiber fan blade comprises a fan blade base and a plurality of fan blade bodies, arc-shaped wind blocking blocks are detachably connected to the fan blade bodies, and when the arc-shaped wind blocking blocks face or deviate from the fan blade base, the arc-shaped wind blocking blocks are all detachably connected with the fan blade bodies. When the arc-shaped wind blocking blocks are installed on the fan blades towards the fan blade base, the arc-shaped wind blocking blocks surround to form an annular structure capable of gathering wind, wind diffusion is reduced, and therefore wind power is enhanced, the arc-shaped wind blocking blocks can be installed on the fan blades away from the fan blade base according to user requirements, on one hand, the heat dissipation effect of the driving part is improved, and on the other hand, the heat dissipation efficiency is improved. And on the other hand, the air is dispersed better, the wind power is softer and more comfortable, the carbon fiber fan blades are adopted, the fan blades can keep better stability and durability during high-speed rotation, the operation efficiency and performance of the fan are effectively improved, and the air volume and the air pressure can be improved.

The invention provides power generation equipment and a power system, and relates to the technical field of power generation. The power generation equipment comprises a support, a heat energy air inlet assembly, a draught fan and a power generation unit. The heat energy air inlet assembly is connected to the support and provided with a flow channel from bottom to top, and the heat energy air inlet assembly is used for heating gas in the flow channel when heated so that the gas in the flow channel can be heated to expand and rise to form airflow. The fan is arranged at the top of the heat energy air inlet assembly and provided with a plurality of fan blades, at least one fan blade is internally provided with an air inlet channel, an air inlet channel and a flow channel, and the air inlet channel forms a Laval nozzle type first air outlet in the outer end of the fan blade. The generator set is connected to the support and used for being connected with the draught fan so as to generate electricity when the draught fan rotates. The power system provided by the invention adopts the power generation equipment. According to the power generation equipment and the power system provided by the invention, the technical problem of low power generation efficiency caused by breeze instability can be improved.

The utility model discloses piglet feed energy-saving smashing equipment which comprises a box body and further comprises a primary smashing cavity arranged on the upper side in a box body cavity. The secondary crushing cavity is arranged on the lower side in the box body cavity; the spiral stirring roller is arranged in the crushing cavity; the hammering assembly is arranged in a cavity body of the secondary crushing cavity; the arc-shaped sieve plate is arranged at the lower end of the secondary crushing cavity; the hammering assembly comprises a rotating shaft, a main hammer piece, a connecting column, an auxiliary hammer piece and a rib plate, the hammering assembly is designed to be provided with the main hammer piece and the auxiliary hammer piece which are connected through the rib plate, the air speed and the air pressure of the secondary smashing cavity can be improved through the rib plate, improvement of the feeding efficiency and the discharging pressure difference are facilitated, and therefore the material smashing efficiency is improved; and the materials fly towards the sieve pieces of the arc-shaped sieve plate at a relatively high speed, are further rubbed and crushed, and are finally crushed into small particles, so that the production cost is low, and the processing efficiency is high.

The utility model discloses a casting sand mold with a baking structure, and relates to the technical field of casting sand molds, a hot air pipe is of an L-shaped structure, and the hot air pipe is connected with a telescopic pipe in a penetrating manner; a first cavity hot air channel is formed in the right side in the sand mold body, a second cavity hot air channel is connected to the bottom of the first cavity hot air channel in a penetrating mode, the second cavity hot air channel is connected with the bottom of the casting cavity in a penetrating mode, and a cavity hot air channel air outlet is formed in the upper end of the casting cavity in a penetrating mode; hot air is blown to the first cavity hot air channel and the second cavity hot air channel through the hot air pipe, hot air is prevented from passing through a cross gate and a filtering system, hot air temperature loss is small, air pressure is large, a casting mold is effectively baked, dryness of the cavities is guaranteed, and the defects of casting slag inclusion air holes and the like are reduced. And the hot-air blower is prevented from being damaged by heat generated during casting, and the practicability is improved.

The utility model discloses a kind of diversion structure of parallel double-impeller cross-flow fan, including first impeller, second impeller, guide vane, two volutes and support seat, the first impeller, second impeller, guide vane and two volutes are connected between two support seats, and the first impeller and second impeller are arranged in parallel symmetry, the guide vane is set between the first impeller and second impeller, two the volute is symmetrically set in the lower end outside of the first impeller and second impeller, and the upper end of the guide vane and volute is set as air inlet, the lower end of the guide vane and volute is set as air outlet, the air inlet and the air outlet are communicated. The diversion structure of the utility model solves the problem that the wind speed, wind pressure of existing cross-flow fan is smaller, and the stiffness of overlength impeller is insufficient and the air outlet is not uniform, significantly improves the performance and efficiency of fan.

The utility model relates to the technical field of fan blades, in particular to a supercharged fan blade. Comprising a fan blade assembly, and the fan blade assembly is composed of hardware and a fan blade body; first fan blades and second fan blades are arranged on the fan blade body, and the second fan blades are symmetrically arranged; the distance between every two adjacent first fan blades is larger than that between every two adjacent second fan blades. Compared with the prior art, the fan blade body is provided with the first fan blades and the second fan blades, the distance between the second fan blades is smaller than that between the first fan blades, and therefore the number of the fan blades is increased, the air outlet and the air pressure are increased, and the air outlet amount of the cooling fan is increased; the fan blade assembly is more balanced during rotation, and noise can be reduced; in addition, the thicknesses of the first fan blades and the second fan blades are reduced, the space of the air outlet between the adjacent first fan blades and the space of the air outlet between the adjacent second fan blades can be increased, the air pressure can be increased, and the output of the air volume can be increased.

The present invention discloses an air supply device with double fans connected in series and precise air control, wherein the air collecting chamber of the air box body and the air outlet of the second fan assembly are connected through an air inlet pipe; the second fan assembly comprises an independent fan, a series air duct and a damper device, the air outlets of multiple independent fans are connected through the series air duct, and the air outlet of the series air duct is the air outlet of the second fan assembly; the side wall of the series air duct is provided with an adjustment opening, and the series air duct is connected with the outside through the adjustment opening; the adjustment opening is fixedly connected with a damper device; the damper device comprises an adjustment plate unit, a mounting seat and a clamping cylinder; a shielding assembly is fixedly connected in the mounting seat, the adjustment plate unit is provided with an adjustment connection hole, the central axis of the adjustment plate unit passes through the adjustment connection hole, and the connecting shaft of the clamping cylinder is fixed to the adjustment connection hole. The present invention solves the problem that the damper of the air duct for adjusting the air pressure of the existing air supply device may leak air, thereby affecting the accuracy of adjusting the air pressure.

The application belongs to the technical field of fabricated wall construction, and particularly relates to a combined ALC window opening outer wall structure and a construction method, comprising a plurality of adjustable connecting assemblies, a plurality of limiting stoppers and at least one ALC wallboard, pretreatment work such as ALC wallboard anchor planting and flat steel welding is completed on the ground in advance, which maximally reduces the content and time of high-altitude work, and through systematic innovation, the construction safety, installation quality and work efficiency are successfully improved in cooperation, the core of which is to transform high-risk and high-difficulty work at high altitude into a safe and controllable prefabrication process on the ground, and relying on an adjustable, anti-loose and strengthened integrated connecting and positioning system, the drawbacks of traditional methods are fundamentally overcome, and the application has the comprehensive advantages of intrinsic safety, precision and efficiency, firmness and reliability, and provides an advanced solution for the construction of the window opening of the fabricated building outer wall.

The invention discloses a fan, an air conditioner outdoor unit and an air conditioner. The fan comprises a driving mechanism, a first impeller and a second impeller. The first impeller comprises a first hub and a plurality of first blades arranged on the first hub, and the first blades are arranged in the circumferential direction of the first hub at intervals. The first hub is in transmission connection with the driving mechanism. The second impeller and the first impeller are connected in series and stacked in the axial direction of the fan, the second impeller comprises a second hub and a plurality of second blades arranged on the second hub, and the second blades are arranged in the circumferential direction of the second hub at intervals. And the second hub is in transmission connection with the driving mechanism. And the rotating direction of the first blade is the same as that of the second blade. The fan can improve the air outlet amount and is beneficial to improving the heat exchange efficiency of the outdoor unit of the air conditioner, so that the use experience of a user on the air conditioner is improved.

The invention relates to an air supply mechanism and cold air equipment, and relates to the technical field of fans. The air supply mechanism comprises a shell, a driving part, a first fan blade and a second fan blade; the shell is provided with a first air duct, a second air duct, a first air outlet and a second air outlet; the first air outlet communicates with the first air duct, and the second air outlet communicates with the second air duct; the driving piece is arranged on the shell; the first fan blade is located in the first air duct and is in transmission connection with the driving end of the driving part; the second fan blade is located in the second air duct and is in transmission connection with the driving end of the driving part; wherein one of the first fan blade and the second fan blade is a centrifugal fan blade, and the other one of the first fan blade and the second fan blade is an axial flow fan blade. The problems that an existing cooling fan is small in air outlet and limited in air supply range can be solved.

The fan impeller comprises a main disc, the main disc is provided with a front wheel disc and a rear wheel disc, the front wheel disc is provided with a front base disc and front fan blades, the front fan blades are bent forwards to form front through holes, the rear wheel disc is provided with a rear base disc and rear fan blades, the rear fan blades are bent backwards to form rear through holes, and the front through holes and the rear through holes are communicated to form air passing holes. The main disc is configured into the front wheel disc and the rear wheel disc, the front wheel disc is provided with the front fan blades which are bent forwards to form the front through holes, the rear wheel disc is provided with the rear fan blades which are bent backwards to form the rear through holes, and when the impeller rotates, the front fan blades supply air to the air outlet of the fan; the rear fan blades generate negative pressure to pump away heat generated by the motor and supply air to the air outlet (play a role in pressurization and heat dissipation), good air supply / pressurization / heat dissipation effects are achieved, meanwhile, due to the fact that the front through holes are communicated with the rear through holes, the overflowing area and the air pressure when the rear fan blades form the negative pressure to supply air forwards are increased, the pressurization and heat dissipation effects are better, and air noise is reduced.

The invention discloses an air conditioner cabinet indoor unit, an air conditioner and a control method. The air conditioner cabinet indoor unit comprises a cabinet body, and a heat exchanger, a centrifugal fan and an axial flow fan are arranged in the cabinet body; the centrifugal fan is arranged on the upper side of the heat exchanger, and the axial flow fan is arranged on the lower side of the heat exchanger. A first air duct and a second air duct are also arranged in the cabinet body; the first air channel communicates with the centrifugal fan, and the second air channel communicates with the axial flow fan. The centrifugal fan and the axial flow fan are arranged on the upper side and the lower side of the heat exchanger respectively, the independent air channels are adopted to guide respective airflow, cooperative work of the two fans with different characteristics is achieved, indoor airflow distribution is improved, and the temperature stratification phenomenon is effectively avoided.

The utility model belongs to the technical field of gravure printing, and discloses an airflow circulation drying oven device of a gravure printing machine, which comprises a drying oven bottom box, a heating component, a drying oven top box, a fan and an air circulation component, the heating assembly is arranged between the oven bottom box and the oven top box; a drying area for a film material to pass through is formed between the drying oven bottom box and the drying oven top box; a wind energy storage area is formed between the drying oven top box and the heating assembly, and a plurality of fans for conveying natural wind into the wind energy storage area are further arranged on the drying oven top box; a gas extraction channel communicated with the drying area is formed in the drying oven top box; the air circulation assembly is used for circulating air flow of the exhaust air channel to the wind energy storage area. By arranging the fan and the air circulation assembly, uniform air blowing can be achieved, so that the printing film is heated uniformly and can be dried timely and fully, the quality of finished products can be guaranteed, and the printing speed of the whole machine can be increased.

The utility model discloses an oblique flow type air water cooling source cooling unit relates to high pressure frequency converter heat dissipation technical field, the inside fixed mounting of box body has shell and tube type condenser and compressor, the inner wall fixed mounting of box body has electric cabinet, the top fixed mounting of box body has the fan, the inner wall one side fixed mounting of box body has evaporimeter, fixed mounting has the oblique flow board in the air duct between fan and evaporimeter, install the expansion valve on the pipeline that shell and tube type condenser and evaporimeter communicate, and the air outlet is opened and communicated between box body and frequency converter chamber, and the device passes through efficient refrigeration system and air path design, effectively reduces the heat that high pressure frequency converter generates when operating, prevents indoor temperature too high, simultaneously, the indoor negative pressure that optimization's air pressure and air volume control reduced, avoids dust to be inhaled indoor, thereby protects electrical equipment from dust influence, prolongs equipment life.

The utility model discloses a cold chain equipment evaporative fan centrifugal impeller, including impeller base, a plurality of impeller blades are annular equidistance and set up on the impeller base, the ring cover is set between a plurality of impeller blades, the utility model is equipped with the ring cover between a plurality of impeller blades, is set up the ring cover at centrifugal impeller open end, when the air inlet comes from the air of impeller blade end face, the wind does work through the trajectory of impeller blade, accelerates through the blade trajectory of impeller blade, and the ring cover can reduce the interference of the flow along the radial direction of impeller end face, and provide the kinetic energy of wind force, reduce the volume loss of impeller blade, thereby promote the air volume and the wind pressure of centrifugal impeller, improve the performance of cold chain equipment evaporative fan centrifugal impeller.

A mixed-flow ventilation fan includes a base plate and a panel that snaps onto it. An exhaust pipe is connected to the rear of the base plate. An air inlet is provided on the panel, communicating with the exhaust pipe on the base plate. A motor mount is connected to the inner wall of the exhaust pipe via several guide vanes. The motor mount is fixed to the central axis of the exhaust pipe by the guide vanes. A drive motor is installed inside the motor mount, and a front fan blade is mounted on the main shaft of the drive motor. The front fan blade rotates inside the exhaust pipe, drawing in air from the air inlet and expelling it from the rear of the exhaust pipe. The beneficial effects of this invention are: the front fan blade is a mixed-flow fan blade, and combined with an optimized number of blades and a reasonable design of the inclination angle, curvature, and angle of attack of the inner and outer edges of the blades, the blades can efficiently perform work on the air during rotation, generating excellent airflow characteristics that balance large air volume and high air pressure.