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6879 results about "Centrifugal fan" patented technology
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A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower fan, biscuit blower, or squirrel-cage fan (because it looks like a hamster wheel). These fans increase the speed and volume of an air stream with the rotating impellers.
Centrifugal fan with low noise
InactiveUS20070160458A1Reduce noiseReduce transmissionPump componentsBlade accessoriesImpellerLow noise
A centrifugal fan with low noise includes a housing, a fan wheel and a recess unit. The fan wheel has a hub and a plurality of fan blade extending outward from the hub radially. The housing has a chamber therein to receive the fan wheel and has a recess unit at the surface thereof. The recess unit is composed of a projection part and a recess part for reducing noise transmission greatly.
Owner:YEN JUN CHIEN
Construction machine
InactiveUS6922925B2Improve cooling efficiencyReduce noiseCoolant flow controlAir coolingEngineeringCentrifugal force
A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifugal fan and the heat exchanger are arranged further upstream than the engine with respect to flow of cooling air, so that cooling air sucked in by the centrifugal fan is led to the engine after passing through the heat exchanger.
Owner:NIHON KENKI CO LTD
Centrifugal type blower unit
In a centrifugal type blower unit, a diameter of an air suction port is set to be larger than a minimum inner diameter of a centrifugal fan, and a slanting portion is formed in each blade of the centrifugal fan at a side of the air suction port so that an inner radius dimension of the centrifugal fan is increased toward the air suction port. Therefore, it can prevent sub-flow air which is sucked into the centrifugal fan from an end side of the blades in an axial direction from interfering with main-flow air which is sucked into the centrifugal fan from an inner radius side of the blades. Thus, the blower unit can reduce second noise generated therefrom without greatly reducing air-blowing capacity.
Owner:DENSO CORP
Metal powder preparation device and method therefor
The invention relates to a metal powder preparation device and method therefor. The device comprises an atomization furnace, a heater, a cooler, an atomization chamber, an atomizer, a pneumatic classifier, a middle bin, a sieving funnel, a screening machine, a deduster, a balance tank, a shell-and-tube heat exchanger, a vacuum obtaining device, a control system, an infusion tube, a conduit, a pipeline, a gas channel, a pneumatic butterfly valve, an electromagnetic valve and the like. The method comprises atmosphere preparation, metal smelting, infusion, centrifugal atomizing, pneumatic classification, mechanical screening, gas purification, cooling and the like, the metal is smelted and treated so as to be poured onto the atomizer for centrifugal atomization to form powder, the powder is classified by the pneumatic classifier, after classification, rough powder is screened by the mechanical screening so as to obtain the finished powder, fine powder is sent into the deduster by airflow for purification, the purified gas is driven by a high pressure centrifugal fan so as to be speeded up to be atomized and classified again after being subjected to heat exchange through the shell-and-tube heat exchanger. The device can be used for continuous production of spherical powder below -320 meshes, and the oxygen content is less than or equal to 80ppm.
Owner:BEIJING COMPO ADVANCED TECH
Centrifugal blower
The present invention provides a centrifugal fan including a hub adapted for rotation about a central axis and a plurality of blades arranged about the central axis and coupled for rotation with the hub. Each of the blades includes a curvature in a plane that extends through the blade and is tangent to a cylinder which extends through the blade and is centered along the central axis.
Owner:ROBERT BOSCH CORP
Apparatus for redirecting an air flow and air conditioner having the same
InactiveCN1945148AIncrease freedomPump componentsLighting and heating apparatusAir volumeDegrees of freedom
Owner:LG ELECTRONICS INC
In-line centrifugal fan
InactiveUS7048499B2Improve performanceReduce sound levelPropellersPump componentsImpellerEngineering
Owner:GREENHECK FAN
Deep plastic film residue screening and recycling machine
InactiveCN104186042AReach the effect of recyclingAchieve the purpose of collectionGatherer machinesAgricultural engineeringPlastic film
The invention relates to the technical field of agricultural machinery, in particular to a deep plastic film residue screening and recycling machine matching with a four-wheel tractor in use. The deep plastic film residue screening and recycling machine is hung on the four-wheel tractor through a connecting frame, the entire deep plastic film residue screening and recycling machine uses a left side plate and a right side plate for connection and land wheels as supports, a transmission is fixedly on a transmission support fixed on the rear side of the connecting frame and in power connection with the four-wheel tractor through a spline connecting shaft, a first driving chain wheel is fixed to the middle of a transmission main shaft of the transmission, and a second driving chain wheel is fixed on the outer side of the right side plate of the right end of the transmission main shaft; an exhaust inlet and a centrifugal fan are fixed in the rears of the left side plate and the right side plate through a fan support frame; a collection box is fixed at the rear ends of the left side plate and the right side plate through a collection box support frame. The deep plastic film residue screening and recycling machine is simple in structure, easy to operate, convenient to use and clean and thorough in plastic film recycling and is a satisfactory agricultural machine for protection of cultivated land.
Owner:青海林丰农牧机械制造有限公司
Indoor air purifier
InactiveCN105333528AEfficient purificationImprove purification effectMechanical apparatusLighting and heating apparatusActivated carbonHEPA
The invention discloses an indoor air purifier which comprises a tank, a base and a filter mechanism. Keys are mounted on the tank and the tank is mounted on the base. An air inlet is formed in the bottom of the tank, and an air outlet is formed in the top of the tank. A backwards-inclined centrifugal fan is arranged on the top of the tank, located over the filtering mechanism, and electrically connected with a power supply circuit of the whole purifier. The filter mechanism is arranged in an inner cavity of the tank and is of a cylindrical structure. The filter mechanism comprises a first aluminium alloy filter screen, a first sterilization cloth layer, an activated carbon layer, a second sterilization cloth layer, an high efficiency particulate air filter (HEPA) layer, a photocatalyst filter layer and a second aluminium alloy filter screen. The bottom of the filter mechanism is sealed, an annular air flue is formed between the outer wall of the filter mechanism and the inner wall of the tank and communicated with the air inlet, and an inner cavity of the filter mechanism is communicated with the air outlet. Through layered filtering and purifying effects of the filter mechanism, indoor air is effectively purified and exhausted out of the air outlet finally.
Owner:NINGBO BRYTY TECH CO LTD
Centrifugal blower
The present invention provides a centrifugal fan including a hub adapted for rotation about a central axis and a plurality of blades arranged about the central axis and coupled for rotation with the hub. Each of the blades includes a curvature in a plane that extends through the blade and is tangent to a cylinder which extends through the blade and is centered along the central axis.
Owner:ROBERT BOSCH CORP
Cooling system for an off-highway vehicle
InactiveUS6216778B1Reduce system noiseReduce back pressurePump componentsExhaust apparatusDiameter ratioControl theory
A cooling system for an off-highway vehicle includes a heat exchanger (e.g., an engine coolant or hydraulic oil heat exchanger) and a fan mechanism for flowing air along a flow path through the heat exchanger. In the improvement, the fan mechanism is a centrifugal fan mechanism and is substantially the sole means for flowing air along the flow path. That is, there is substantially no ram-urged air. The mechanism includes a housing and a fan in the housing. The fan has forward curved blades, thereby to reduce system noise. A preferred fan has a depth-to-diameter ratio not in excess of about 0.4 and, most preferably, not in excess of about 0.25. An alternate embodiment includes what might be termed a split-discharge arrangement wherein air blown by the fan is discharged along two paths.
Owner:BLUE LEAF I P INC +1
Apparatus for redirecting wind and air conditioner having the same
An air conditioner, especially to an apparatus for redirecting wind in an indoor unit of the air conditioner is disclosed. A scroll guide provided so as to form an air duct at the circumference of a centrifugal fan for sucking and discharging the interior air so that the interior air can pass through a heat exchanger is installed in a rotation controllable state. Wind direction patterns can be regulated in various states by rotating the scroll guide by a predetermined angle and converting the setting position of an air discharge opening according to the operation mode. The degree of freedom relative to wind redirection of the discharge air can be improved by a variable air duct and the product efficiency and the reliability can be improved through improvement of the wind amount efficiency and reduction of noise.
Owner:LG ELECTRONICS INC
Illumination apparatus
InactiveUS20100246166A1Improve cooling efficiencyPoint-like light sourceLighting elementsEngineeringCentrifugal force
An illumination apparatus includes a housing, a light source, a centrifugal fan, and a heat sink. The housing has an accommodation, a plurality of inlets, and a plurality of outlets. The accommodation communicates with the outside of the housing through the inlets and the outlets. The light source, the centrifugal fan, and the heat sink are disposed in the accommodation. The heat sink includes a base and a plurality of fins connected to the base. The base is connected to the light source, the fins radially surround the centrifugal fan. An air channel is disposed between two adjacent fins. An air from the outside of the housing is capable of flowing into the accommodation through the inlets and then into the centrifugal fan in an axial direction of the centrifugal fan, and flow out of the accommodation in a radial direction of the centrifugal fan through the air channel and outlets.
Owner:YOUNG GREEN ENERGY
Quiet hair dryer
An improved quiet (low noise) hair dryer, which includes a handle for holding the same and supporting its blower assembly having a motor driven centrifugal fan assembly, achieves a significant reduction of noise by employing balanced volume inlets above and below the fan rotor, a special fan rotor configuration having blades with airfoil shapes and a curved trailing edges and diffuser ring in its outlet that employs the Coanda effect in the air exiting the dryer.The dryer can also include a resistive heating element to increase the temperature of the exiting air and, includes the necessary switches and cords for operation of its heating element and electric motor.
Owner:CLARK WAYNE +1
Hanging air conditioner indoor unit
InactiveCN105928070ACycle fastImprove comfortLighting and heating apparatusAir conditioning systemsEngineeringCentrifugal force
The invention provides a hanging air conditioner indoor unit. The hanging air conditioner indoor unit comprises a base and an outer cover, wherein the outer cover covers the base. The hanging air conditioner indoor unit further comprises two centrifugal fans. A first air inlet is formed in the first side surface, right facing the base, of the outer cover. Two first air outlets are oppositely formed in the two second side surfaces of the outer cover in the length direction. The two centrifugal fans are fixedly arranged in a space formed by the outer cover and the base, used for blowing airflow entering from the first air inlet to the first air outlets and in one-to-one correspondence with the first air outlets. According to the hanging air conditioner indoor unit, the two centrifugal fans and the two first air outlets oppositely formed are adopted; when the hanging air conditioner indoor unit is used, the airflow of the first air inlet can be blown to the two first air outlets in the opposite direction and cannot be directly blown to a user, and thus the comfort is improved; and meanwhile, air flow circulation in a room can be faster through bidirectional air blowing, so that the purposes of rapid cooling and heating are achieved.
Owner:HISENSE (GUANGDONG) AIR CONDITIONER
Centrifugal fan
A centrifugal fan includes a motor having an impeller and a housing for accommodating the motor. The housing has a sidewall surrounding an outer circumference of the impeller. An air inlet is formed in the housing and opposed to a center portion of the impeller. An air outlet is formed in the sidewall of the housing and opposed to an outer surface of the impeller. The housing includes a housing body and a housing cover. The housing body has a bottom with the motor secured thereon. The housing cover, formed by a pressed metal member, has an upper part and a cover sidewall extending from the upper part toward the bottom of the housing body and forming at least a part of the sidewall of the housing.
Owner:NIDEC CORP
Rocket motor exhaust scrubber
InactiveUS6964699B1Reduce probabilityEfficient captureCombination devicesGas treatmentGas passingEngineering
A wet scrubber having a series of chambers for capturing and cooling exhaust gases generated during static test firing of rocket motors. Exhaust gas enters an inlet to a first chamber and is cooled and slowed by a spray solution. HCL gas is condensed and absorbed by the spray solution and precipitates to a liquid slurry at the bottom of the device. The remaining exhaust products enter a demister chamber where nozzles continue to spray the gasses as they pass upward and through a mesh-style demister at the top of the vessel. The demister filters liquid and solid waste particles from the gas stream, and the clean, dry gases are accelerated through a centrifugal fan into the atmosphere. A deflector is positioned within the inlet to the first chamber for containing parts in the event of a motor mal-function.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Medical air purifying sterilizer and operation mode thereof
ActiveCN103499125AConform to disinfection technical indicatorsSpace heating and ventilation safety systemsLighting and heating apparatusAir cleaningOperation mode
The invention discloses a medical air purifying sterilizer and an operation mode thereof and belongs to the technical field of air exchange devices. The medical air purifying sterilizer comprises a shell, an outdoor new air inlet, a new air inwards-leading fan, a full-heat exchanger core, an indoor direction-changeable vent, an indoor dirt air inlet, a dirt air outwards-leading fan and an outdoor dirt air outlet and further comprises a humidifier, an air purifying and sterilizing system, a centrifugal fan and an indoor sterilizing and purifying outlet. The shell is a cabinet type shell, and the whole cabinet type shell is of an air-pipe-free vertical cabinet floor stand structure. The air purifying and sterilizing system comprises a low-efficiency filter, a medium-efficiency filter, a high-voltage electrostatic dust collector, an activated carbon absorber and a photocatalyst catalyzing and sterilizing sterilizer. A new air inwards-introduced and energy recovery channel, a dirt air discharging and energy recovery channel, an air purifying and sterilizing channel and a new air inwards-leading, energy recovery and air purifying and sterilizing channel can be formed. The medical air purifying sterilizer has the advantages that bacteria, viruses, formaldehyde, benzene and ozone concentration do not exceed standards, pollution of PM2.5 particles do not exist, the sterilizing cost is low, and energy can be recovered.
Owner:NINGBO DONGDA AIR CONDITIONING EQUIP
Centrifugal blower having noise-reduction structure
InactiveUS6821088B2Reduce low frequency noiseControl interferencePump componentsReaction enginesEngineeringNoise reduction
Owner:DENSO CORP
Impeller of centrifugal fan and centrifugal fan disposed with the impeller
An impeller of a centrifugal fan includes an end plate, a plurality of blades and an end ring. The blades include blade bodies that are annularly disposed around a shaft and fixed to the end plate. The blades further include blade covers that are attached to the blade bodies. The blade covers and the blade bodies form a hollow space. The end ring is disposed such that it sandwiches the plural blades between itself and the end plate in a shaft direction. The blade covers form at least part of negative-pressure surfaces.
Owner:DAIKIN IND LTD
Impeller of centrifugal fan and centrifugal fan disposed with the impeller
An impeller of a centrifugal fan includes an end plate, a plurality of blades and an end ring. The blades include blade bodies that are annularly disposed around a shaft and fixed to the end plate. The blades further include blade covers that are attached to the blade bodies. The blade covers and the blade bodies form a hollow space. The end ring is disposed such that it sandwiches the plural blades between itself and the end plate in a shaft direction. The blade covers form at least part of negative-pressure surfaces.
Owner:DAIKIN IND LTD
High velocity and high dilution exhaust system
ActiveUS20060019592A1Prevent buildupEliminating costly corrosionAir supply regulationPump componentsEffective heightEngineering
The high velocity and high dilution exhaust system uses a centrifugal fan provided with a tapered nozzle. The nozzle compresses the airstream exiting the fan to increase back pressure and velocity. The air flow from the fan enters a stack having a venturi further increasing the velocity and decreasing the pressure. The decrease in pressure causes a suction, allowing the introduction of ambient air to mix with and dilute the output of the fan. The total discharge from the exhaust stack has a high velocity resulting in a plume height. and effective height of the exhaust before dispersion occurs.
Owner:KUPFERBERG MINEL +1
Wall surface cleaning robot based on positive-negative pressure adsorption principle
InactiveCN101317744AGood wall adsorptionImprove obstacle performanceCarpet cleanersFloor cleanersSurface cleaningPropeller
The invention relates to a wall-cleaning robot based on the positive and negative pressure absorption principle. The wall-cleaning robot of the invention solves the problems of complicated structure, bad wall absorption effect, and bad obstacle-crossing capacity and so on, existing in the existing wall-cleaning robot. A cleaning mechanism (71) and a water inlet and outlet mechanism of the invention are installed in a shell body (2); a wheel type traveling system (70) is installed at the lower part of the shell body (2); a three-phase motor (13) is installed on the upper end face of the shell body (2); the outer rotors of the three-phase motor (13) are respectively and fixedly provided with a propeller (1) and a centrifugal fan in sequence from top to bottom; the external housing of the three-phase motor (13) is communicated with the inner cavity of the shell body (2); a dry brush (9), a wet brush (27), a suction roll (32) and a squeeze roll (44) are installed in the shell body in sequence from front to rear. The wall-cleaning robot of the invention has the advantages of good wall absorption effect, better obstacle-crossing capacity and simple structure and can be remotely controlled.
Owner:HARBIN INST OF TECH
Centrifugal Fan
ActiveUS20070194668A1Discharging airPump componentsSemiconductor/solid-state device detailsImpellerEngineering
An arrangement of a low air inlet and a circuit for driving a torque generator in an ultra-compact centrifugal fan is disclosed. In the ultra-compact centrifugal fan, a region occupied by the circuit is not completely arranged radially inside a cup-shaped portion to which an impeller is attached. At least a part of the low air inlet provided on a bottom of a housing of the centrifugal fan is arranged in a range of predetermined angle in an imaginary ring-shaped portion surrounding a base portion covered by the cup-shaped portion. A part of the circuit, that is not covered by the cup-shaped portion, is arranged upstream of the range of the predetermined angle in a flowing direction of airflow.
Owner:NIPPON DENSAN CORP
Optimization design method of impellor for cavitation-erosion-resistant centrifugal fan
InactiveCN102251983AReasonably constructedImprove efficiencyPump componentsPumpsEngineeringThree dimensional shape
Owner:XIAN UNIV OF TECH
In-line centrifugal fan
InactiveUS20030206800A1Easy to installEfficient and less noisyPropellersRotary propellersImpellerMixed flow
An inline centrifugal mixed flow fan (20) includes an axially extending intake conduit (22). An inlet cone (28) is disposed at an intake end (24). An impeller (30) is disposed downstream of the inlet cone and includes a centrally disposed wheel-back (32) rotated by an electric motor (44), plural fan blades (34) extending radially outwardly from the wheel-back and a wheel cone fixedly (36) attached to and circumscribing the wheel blades. A driver chamber (48) downstream of the impeller includes plural radially extending straight vanes (50) to direct air to an outlet end (26). The fan is configured to achieve reduced sound level and increased efficiency.
Owner:GREENHECK FAN
Brushless cooling fan
ActiveUS8251674B1Improve efficiencyLower resistanceAssociation with control/drive circuitsPump componentsImpellerElectronic controller
A fan assembly with impeller and shroud for application in a vehicle cooling system. The fan is powered by an external rotor brushless direct current (BLDC) motor having an electronic controller positioned away from the BLDC on an outer shroud wall with a plurality of ducts drawing an airflow from a static lower pressure created by the impeller, the airflow streaming over a heat sink disposed on the controller, exiting through a shroud. The static lower pressure air is pulled by a centrifugal fan and skewed magnets inside the motor through a plurality of ducts in a shroud hub, cooling the BLDC, maintaining low resistance for high efficiency. The BLDC is integrated into the assembly, having a stator fixed in the shroud hub and a rotor directly fused to the impeller, the shroud and impeller forming the BLDC motor without a housing, allowing the motor to easily dissipate heat.
Owner:PAIRAKTARIDIS JOHN
Method and apparatus for recovering solid waste material containing metal
InactiveCN101185935ACause damageHigh failure rateGas current separationElectrostatic separationElectric machineEnvironmental engineering
The invention discloses a method and an equipment of recycling solid waste with metals. The invention comprises the procedures as follows: (1) the solid waste with metals is rough shattered by a slicer, a primary crushed is carried out by a shear mode crusher and a second crushed is carried out by a speed variable hammer crusher; (2) the material is extracted into a gravity separator and a cyclone separator by a centrifugal fun after being second shattered. (3) Dust with metal which is less than 60 meshes is sent into a vibrating screen after falling into a dust collecting hopper of the cyclone separator. (4) Material powder which is more than 60 meshes goes into the vibrating screen. The separation of metal from nonmetal can be realized by a high pressure electrostatic separator. The high pressure electrostatic separator which is used in the invention comprises a body and dust collecting polar plates which can continuously rotate. A plurality of dust collecting polar plates are fixed and connected in series by central axis. The central axis is connected with a motor. A discharge electrode and a scraper are arranged between every two dust collecting polar plates. The invention has high metal recovery rate and the system of the invention operates automatically, which is harmless to the environment and has obviously economical benefit.
Owner:曹时宜
Air curtain breathing mask
ActiveCN103961822AImprove breathing environmentReduce breathing burdenBreathing masksEngineeringAir purification
The invention provides an air curtain breathing mask. The air curtain breathing mask comprises a head-mounted device and batteries. The air curtain breathing mask is characterized by further comprising a pair of earlaps, wherein the inner side surfaces of the earlaps are connected with the two ends of the head-mounted device respectively, a cavity is arranged in each earlap, the batteries are installed at the bottoms of the cavities, and an air purifying device and an air curtain centrifugal fan are arranged in the cavity in sequence from outside to inside; besides, the air curtain breathing mask further comprises a flow channel, the flow channel is of a hollow tubular structure, the two ends of the flow channel are connected with air outlets of the air curtain centrifugal fans installed in the left earlap and the right earlap respectively, and an exhaust port is further formed in the flow channel. By the adoption of the air curtain breathing mask, pure air is efficiently provided, a user will not feel suffocated, filtered air can be correspondingly and automatically processed according to the current environment, so that the air which is breathed in by the user is healthier, the demand of the user for air quality is better met, and user experience is perfect.
Owner:长沙心诺医疗器械有限公司
Centrifugal fan with improved air cooling for its motor, especially for a motor vehicle
InactiveUS6034451AImprove efficiencyEasy to operateReaction enginesMechanical energy handlingMobile vehicleMotorized vehicle
A centrifugal fan for a motor vehicle has a fan rotor driven in rotation by an electric motor and lodged in a central part of a casing. The outer walls of the casing define, in conjunction with a peripheral portion of the rotor, a volute for channeling air which is delivered by the rotor in a tangential direction. The outer wall of the casing includes a longitudinal side wall portion formed with through apertures constituting diversion ports, for taking off some of the air delivered by the rotor and diverting this air through an external duct fixed to the casing and open into the central region of the latter, so as to cool the motor.
Owner:VALEO SYST THERMIQUES
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