摘要:
Disclosed is an axial flow fan capable of preventing cracks from generating at parts where stress is concentrated, by improving the structure. For this, the axial flow fan includes a hub, a plurality of wings extended from an outer surface of the hub, and a reinforcing member filling a space formed between the outer surface of the hub and a front edge part of each wing.
摘要:
Disclosed is an axial flow fan capable of preventing cracks from generating at parts where stress is concentrated, by improving the structure. For this, the axial flow fan includes a hub, a plurality of wings extended from an outer surface of the hub, and a reinforcing member filling a space formed between the outer surface of the hub and a front edge part of each wing.
摘要:
A fan including a hub part, a blade part and a vibration-absorbing boss, all constituent elements of which are injection molded, thereby reducing production costs. The fan has a minimized contact area between the vibration-absorbing boss and the hub part to prevent the vibration-absorbing boss from being deformed by high-temperature heat during insert injection molding of the hub part and the blade part while assuring sufficient strength of the hub part.
摘要:
A fan including a hub part, a blade part and a vibration-absorbing boss, all constituent elements of which are injection molded, thereby reducing production costs. The fan has a minimized contact area between the vibration-absorbing boss and the hub part to prevent the vibration-absorbing boss from being deformed by high-temperature heat during insert injection molding of the hub part and the blade part while assuring sufficient strength of the hub part.
摘要:
A turbo fan including backward-inclined blades that are inclined in a direction opposite to a rotating direction of a rotating plate. A positive pressure surface of each blade, facing the rotating direction of the rotating plate, takes the form of a flat surface, and a negative pressure surface of the blade, opposite to the rotating direction of the rotating plate, takes the form of a convexly-curved surface. A radius of curvature defined by the convexly-curved negative pressure surface is within a range of 2.5˜4 times of a radius of the turbo fan. The turbo fan can reduce noise and consumption of power together, and consequently, an air conditioner having the turbo fan can achieve an improvement in performance.
摘要:
A dehumidifier includes a body having inlet and outlet ports and a centrifugal fan mounted inside the body to circulate air. The centrifugal fan includes a fan disk coupled to a fan motor such that the fan disk can be rotated, and the fan disk includes an incline inclined toward the outlet ports to guide the flow of air passing through the centrifugal fan to the outlet ports. The incline extends from a motor coupling part of the fan disk, which is coupled to the fan motor, in the radial direction. Blades are mounted at the outer circumference of the incline.
摘要:
A centrifugal fan, which equally maintains air-blowing capacities of both inlets regardless of different suction resistances of both inlets due to a driving device, and an air conditioner having the centrifugal fan. The centrifugal fan includes a rotary plate; first blades disposed at the edge of one surface of the rotary plate; and second blades disposed at the edge of the other surface of the rotary plate, and having a larger outer diameter than the outer diameter of the first blades. Thus, although a large flow resistance is generated at one inlet of the centrifugal fan due to the driving device, air-blowing capacities of both inlets are maintained equally.
摘要:
A centrifugal blower capable of preventing generation of a swirled air stream in a space between the inner surface of a casing and a side end of a centrifugal fan, and an air conditioner having the same. The centrifugal blower includes a casing having an air inlet, an air outlet, and a bell-mouth located near the air inlet, a centrifugal fan installed in the casing, and a stream-cutoff member provided at an inner surface of the casing around the bell-mouth to prevent an air stream from being swirled in a space between the inner surface of the casing and a side end of the centrifugal fan.
摘要:
There is a vinyl 4-hydroxybenzal-vinylalcohol-vinyl acetate copolymer, a 4-t-butoxycarbonyloxybenzal-vinyl alcohol-vinyl acetate copolymer and a vinyl 4-t-butoxycarbonyloxybenzal-vinyl 4-hydroxybenzal-vinyl alcohol-vinyl acetate copolymer suitable for photoresist and methods for preparing the same. The latter two polymers contain 4-hydroxybenzal groups all or parts of which are protected with t-butoxycarbonyl group. Superior in transparency, thermal stability, mechanical strength, and adhesiveness to silicon wafer, the photoresists prepared from the protected copolymers can enhance the resolution of fine circuit by virtue of low weight loss upon the thermal treatment after exposure.
摘要:
There is a vinyl 4-hydroxybenzal-vinylalcohol-vinyl acetate copolymer, a 4-t-butoxycarbonyloxybenzal-vinyl alcohol-vinyl acetate copolymer and a vinyl 4-t-butoxycarbonyloxybenzal-vinyl 4-hydroxybenzal-vinyl alcohol-vinyl acetate copolymer suitable for photoresist and methods for preparing the same. The latter two polymers contain 4-hydroxybenzal groups all or parts of which are protected with t-butoxycarbonyl group. Superior in transparency, thermal stability, mechanical strength, and adhesiveness to silicon wafer, the photoresists prepared from the protected copolymers can enhance the resolution of fine circuit by virtue of low weight loss upon the thermal treatment after exposure.