48results about How to "Improve blower efficiency" patented technology

A method of designing rotors for a Roots blower comprising a housing having cylindrical chambers, the housing defining an outlet port (19). The blower includes meshed, lobed rotors (37,39) disposed in the chambers, each rotor including a plurality N of lobes (47,49), each lobe having first (47a,49a) and second (47b,49b) axially facing end surfaces. Each lobe has its axially facing surfaces defining a twist angle (TA), and each lobe defines a helix angle (HA). The method of designing the rotor comprises determining a maximum ideal twist angle (TAM) for the lobe as a function of the number N of lobes on the rotor, and then determining a helix angle (HA) for each lobe as a function of the maximum ideal twist angle (TAM) and an axial length (L) between the end surfaces of the lobe. A rotor designed in accordance with this method is also provided.

An air handling blower for HVAC equipment includes a blower housing adapted to accommodate centrifugal impellers of selected inside and outside diameters of the impeller blades wherein the inside diameter of the largest diameter impeller accommodated by the housing is not less than the outside diameter of the smallest diameter impeller accommodated by the housing without loss of performance. The blower housing preferably has a continuously increasing cross-sectional airflow area for air being discharged from the blower and extending from a cutoff edge to an outlet.

An air distribution blower housing has an adjustable restriction in the interior of the blower housing. The adjustable restriction has the configuration of a rectangular plate. One edge of the plate is connected by a pivoting connection to an interior wall of the blower housing in the air flow path from the blower housing. The plate can be pivoted about the pivot connection through a plurality of adjusted angular positions of the plate in the air flow path. In each adjusted position of the plate, the length of the plate extends from the pivot connection in the air flow direction. A sliding connection is provided between the plate and at least one side wall of the blower housing. The sliding connection selectively holds the plate in its adjusted angular position and also provides a visual indication on the exterior of the blower housing of the adjusted angular position of the plate inside the blower housing.

An air distribution blower housing has an adjustable restriction in the interior of the blower housing. The adjustable restriction has the configuration of a rectangular plate. One edge of the plate is connected by a pivoting connection to an interior wall of the blower housing in the air flow path from the blower housing. The plate can be pivoted about the pivot connection through a plurality of adjusted angular positions of the plate in the air flow path. In each adjusted position of the plate, the length of the plate extends from the pivot connection in the air flow direction. A sliding connection is provided between the plate and at least one side wall of the blower housing. The sliding connection selectively holds the plate in its adjusted angular position and also provides a visual indication on the exterior of the blower housing of the adjusted angular position of the plate inside the blower housing.

An integrated blower for cooling device comprises an electric drive with at least one set of a flat stator and a magnetized rotor, a casing with an inlet and an outlet, and radial impeller. The flat stator integrated with the casing thus the flat stator serves as at least a part of the casing, and the magnetized rotor integrated with the radial impeller. The flat stator comprises circumferential arrayed coils with magnetic axes coincide with a plane of the flat stator. The radial impeller comprises blades attached to a backplate and a shroud, and circumferential arrayed magnetic means thus serve as the magnetized rotor. The magnetic means placed and magnetized along the plane of the flat stator thus magnetic axes of the coils and the magnetic means located at one plane substantially.

A fan includes an impeller portion generating an air flow and a motor that rotates the impeller portion about a center axis. The impeller portion is attached to a yoke of a rotor portion of the motor and is rotated with the yoke. A circular portion of the impeller is attached to a bottom opening of the yoke having a cylindrical shape whose top is covered by insert molding. Therefore, the impeller and the yoke may be securely fixed to each other. In addition, an outer side surface of the yoke is exposed to outside air such that the space arranged inward from the plurality of blades may be enlarged.

The present invention relates to a forage harvester blower including a blower rotor having a plurality of generally radially extending rotor paddles which operate in a corresponding substantially cylindrical housing, characterised in that said housing is provided with adjustment mechanism for at least locally adjusting the diameter of the housing. The present invention further relates to a method for optimising the operation of a forage harvester blower and to a method for preventing damage to a forage harvester blower during operation.

The invention discloses an organic solid waste fermentation box, which comprises a box body, a chain scraper conveyor and air channels, wherein the chain scraper conveyor is arranged in the box body, and is used for bearing and conveying fermented materials; the chain scraper conveyor comprises a support, and a plurality of chain plate components supported on the support; the chain plate components are sequentially connected to form a closed loop structure and comprise upper-layer chain plate components and lower-layer chain plate components; the upper-layer chain plate components are used for bearing the fermented materials; the air channels are fixed onto the support of the chain plate conveyor and located between the upper-layer chain plate components and the lower-layer chain plate component of the chain scraper conveyor; the upper ends of the air channels press against first outer walls of the upper-layer chain plate components. According to the organic solid waste fermentation box, through reasonable connection and layout between the air channels and the chain plate components, a stable air supply system of the fermented materials is established, so that oxygen-containing hot air can be effectively blown into the fermented materials, the effective control of a fermented environment is realized, and the fermentation efficiency is greatly improved.

An electric blower (1) comprises: a rotor (11) having a rotary shaft (13); a centrifugal fan (20) which is attached to the rotary shaft and has a first opening (20a); a fan case (30) which covers the centrifugal fan and has a second opening (30a), an opening end thereof being located outward of an opening end of the first opening; and a fan case spacer (40) which is attached to the fan case and has a third opening (40a) which communicates with the first opening. The fan case spacer (40) has: a spacer part (410) which closes off a space between the opening end of the first opening and the opening end of the second opening; and a cover part (420) which extends outward from the opening end of the second opening and covers an outer surface of the fan case. The cover part (420) has a ring-shaped protrusion (421) which protrudes toward the outer surface of the fan case and surrounds the second opening. The protrusion (421) is located between the opening end of the second opening and a tip part (422) of the cover part, and contacts the outer surface of the fan case.