Refrigeration – Gas controller or director – Cooled gas directed relative to cooled enclosure
Reexamination Certificate
2000-04-28
2002-04-16
Doerrler, William (Department: 3744)
Refrigeration
Gas controller or director
Cooled gas directed relative to cooled enclosure
C062S426000, C062S419000, C062S314000, C454S245000, C454S246000, C454S247000, C454S248000
Reexamination Certificate
active
06370906
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a wind inlet and outlet case for a blower of an air conditioning system, particularly to one consisting of a body and a face plate, connected to an inner machine to have plural wind inlet and outlet cases convenient to install with low cost, maintaining good air quality.
At present most conventional central air conditioning systems, as shown in
FIG. 1
, includes an outer machine A
1
as main power source, one or more inner machines A
2
installed in one or more rooms and connected to the outer machine A
1
. The inner machine A
2
is positioned in a preset proper location (for example, in a middle layer between a ceiling plate and a floor plate, to supply cool or hot air. One or more wind outlets A
3
are connected with the inner machine with guide pipes, having a faceplate flush with the ceiling. Further one or more wind inlets A
4
are also provided on a surface of the ceiling, having respectively a faceplate and a filter to suck out waste air in the room.
However, the conventional central air conditioning systems generally have the following disadvantages.
1. As the wind inlet A
4
is not connected with an exhaust pipe to guide out waste air, hot waste air staying in the intermediate layer between the ceiling and the floor plate may enter the room mixed with cool air, affecting cooling effect.
2. Although the wind inlet A
4
has a filter, and the sucking opening of the inner machine does not have a filter, so when the inner machine sucks in cool air from the outer machine, those waste air in the intermediate layer may mix with the clean cool air into the room floating in the cool air and then exhausted out of the wind outlet A
3
, worsening air quality.
3. If the wind inlet A
4
is to be connected with a guide pipe to achieve exhausting effect, the wind inlet A
4
has to be connected with an exhausting pipe, increasing cost, not economical.
4. The conventional blower buried in the ceiling has to be provided with plural wind inlets and wind outlets in the surface of the ceiling, forming not good outer appearance.
So some makers offer a kind of conventional inner machines
2
, as shown in
FIG. 2
, including also an outer machine
1
and an inner machine
2
provided with a wind inlet
20
and a wind outlet
21
formed integral with the inner machine
2
to have good appearance. Though this inner machine with the wind inlet
20
and the wind outlet
21
integral is convenient, more than two inner machines have to be installed in a comparatively large room, or its cooling effect may not enough, resulting in high cost. Besides, the wind inlet and the wind-outlet plate are too close to the operating portion of the inner machine
2
, producing unpleasant noise of the operation. In addition, the inner machine has a heavy weight, not convenient to carry, install or repair.
SUMMARY OF THE INVENTION
The wind inlet and outlet case for a blower of an air conditioning system in the present invention includes a body and a faceplate combined together and connected to an inner machine.
The feature of the invention is the body having a wind outlet room and a wind inlet room separated with a lengthwise vertical wall. The wind outlet room and the wind inlet room are separately connected with the inner machine with separate guide pipes, and the faceplate has a wind inlet and a wind outlet respectively facing the wind inlet room and the wind outlet room.
REFERENCES:
patent: 4512241 (1985-04-01), Morris et al.
patent: 4917862 (1990-04-01), Kraw et al.
patent: 5076152 (1991-12-01), Muller et al.
patent: 5325681 (1994-07-01), Ellis et al.
Doerrler William
Shulman Mark
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