FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENS RULES, 2003
PROVISIONAL SPECIFICATION
[See section 10, Rule 13]
AN OUTDOOR UNIT OF AIR CONDITIONING SYSTEM;
BLUE STAR LIMITED, A COMPANY INCORPORATED UNDER THE COMPANIES ACT 1956, WHOSE ADDRESS IS KASTURI BUILDINGS, MOHAN T. ADVANI CHOWK, JAMSHEDJI TATA ROAD, MUMBAI- 400 020, MAHARASTRA, INDIA;
THE FOLLOWING SPECIFICATION
DESCRIBES THE INVENTION.
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FIELD OF INVENTION
The present invention relates to air conditioning systems based on the vapour compression cycle and particularly to an outdoor unit of the air conditioning systems based on vapour compression cycle.
BACKGROUND OF THE INVENTION
Central air conditioning and heat pump systems used in connection with residential and commercial applications typically include one or more air conditioning units. These air conditioning units are a combination of outdoor and indoor units. A conventional outdoor unit includes a cabinet housing, a fan, an electric motor to drive the fan, a compressor, and a condenser coil, which rejects heat to the surroundings and associated piping and valves. These are installed in a specific region (a plant), away from the area to be conditioned. Some of these outdoor units have multiple compressors along with multiple condenser coils. The indoor units consist of the evaporator section and the expansion device, which cools the air to be conditioned. Depending on the specific requirement sometimes more than one no. of indoor units are needed to be placed in the region to be conditioned. These indoor units are connected to multiple outdoor units based on capacity requirements. The capacity of the entire plant depends upon the number of outdoor units and the capacity of each of these units accommodated in it.
The efficiency of the condenser coil placed in the outdoor unit depends upon the amount of air flowing through it. Therefore, to install a number of conventional outdoor units, a gap is necessary to be maintained between any two units, for allowing easy passage of airflow. If this gap is not
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maintained then the condenser is starved of the air it requires for heat transfer and the efficiency of the unit decreases. As the space available to install these units is limited there is a restriction on the no. of units which can be installed in a given plant.
DETAILED DESCRIPTION OF THE DRAWINGS
Fig 1 shows an outer unit of air conditioner according to the present invention,
DESCRIPTION OF THE PRESENT INVENTION
An object of the present invention is to compact outdoor units of air conditioning system.
According to the first embodiment of the present invention, an outdoor unit (100) of air conditioning system includes a fan (20), a compressor (30), a condenser coil (10) and associated piping and valves, wherein the said condenser coil (10) is inverted "V" shaped and adapted on a panel (50) forming a triangular condenser housing and said fan (20) is adapted within the triangular condenser housing.
According to the present invention, the fan (20) is adapted centrally in the triangular condenser housing for suction / discharge function of air to pass through the condenser coil (10). The condenser coil (10) is fitted to the panel (50) via a Gl angle by screwing, while the compressor (30) is mounted on the panel via bolting.
As a result of the above mentioned modifications in the condenser coil design, the airflow pattern through the condenser coil changes. The outdoor units can be placed besides each other without having to maintain any gap between them. This allows for more number of units to be placed
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in the same available space. This improves the capacity of the plant and overcomes the space constraint issue.
Dated this 22nd day of February, 2006.

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