Fluid reaction surfaces (i.e. – impellers) – Perimetric blading extending axially between annular members
Reexamination Certificate
1999-03-05
2001-04-03
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Perimetric blading extending axially between annular members
C416S21400A, C416S21900R
Reexamination Certificate
active
06210114
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a fan, and more particularly to a cross flow fan for an air conditioner.
2. Description of the Prior Art
Generally, an indoor unit in a separable air conditioner is constructed to occupy as small a space as possible and to generate as much wind as possible and the indoor unit is generally disposed with a horizontally formed cross flow fan.
The cross flow fan is disposed, as illustrated in
FIG. 7
, with a plurality of horizontal blades
51
mounted on a plurality of diaphragms
50
, each arranged at a predetermined interval, and a rotary axle
52
piercing the plurality of diaphragms
50
and protruding at both ends of the diaphragms
50
.
In other words, as illustrated in
FIG. 8
blades
51
, each having a predetermined length, are coupled to the diaphragms
50
where coupling holes
53
are sequentially arranged to insert the blades thereinto, to form a partitioning fan
54
and to stack the partitioning fans
54
by way of ultrasonic fusion for formation of a cross flow fan.
The purpose of partially forming the cross flow fan by way of the plurality of diaphragms
50
is to prevent deflection or deformation of the blades
51
as the blades
51
are made of relatively thin material.
SUMMARY OF THE INVENTION
However, there is a problem in the cross flow fan thus constructed in that fluid flowing in the fan is curtailed in flowing freely and energy efficiency is reduced due to weight increased by the cross flow fan having a plurality of diaphragms when the plurality of diaphragms are mounted to form a plurality of partitioned fans when the cross flow fan is manufactured.
There is another problem in that amount of wind output from the fans is reduced when the fluid is impeded in flowing freely.
The present invention is disclosed to solve the aforementioned problems and it is an object of the present invention to provide a cross flow fan for an air conditioner adapted to increase a free flow of fluid flowing in the fan, thereby increasing an amount of wind from the fan and improving an energy consumption efficiency.
In accordance with the object of the present invention, there is provided a cross flow fan for an air conditioner constructed to allow a plurality of horizontally and sequentially arranged blades to be partitioned, each distanced by a predetermined space, by a plurality of vertically arranged diaphragms, wherein the cross flow fan comprises a through hole so formed as to have a diameter of 0.4~0.8D against a diameter D of the diaphragm, such that fluid infused into the fan can form an eddy current.
REFERENCES:
patent: 4007999 (1977-02-01), Serizawa
patent: 4364712 (1982-12-01), Charles
Look Edward K.
Rodriguez Hermes
Rosenthal & Osha L.L.P.
SeonMun University
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