TECHNICAL FIELD

The present invention relates to a ceiling air conditioning unit, which can be installed in a building or on a vehicle.

BACKGROUND

It is common to include an air conditioning unit in a vehicle, such as a car, van, ute, truck, bus, motorhomes (RV), caravan, boat etc. The aim is to provide a cooling effect or heating effect when desired. An air conditioning unit normally includes a compressor, a condenser, a fan for the condenser, an evaporator (also known as evaporative unit), and a fan for the evaporator (also known as evaporator fan). The scientific principle of the working of an air conditioning unit is well known. For a ceiling air conditioning unit, part or the entire unit is mounted on top of a ceiling of a vehicle, for example, the condenser and compressor can be located elsewhere, away from the ceiling. Such a ceiling air conditioning unit can be used inside of a building. Sometimes, it is also known as a cassette air conditioner.

The noise generated by such unit or system is often at an unsatisfactory level, thus affecting or disturbing a person within a vehicle or a room. Embodiments disclosed herewith offer alternatives to those existing ceiling air conditioning units.

SUMMARY

According to an aspect of the present disclosure, there is provided an air conditioning unit, including: a chamber; a fan, in the chamber, for effecting an entry air entering the chamber and an exit air exiting the chamber; and an evaporative unit, in the chamber, for conditioning the entry air; wherein the fan, together with at least part of the chamber, creates a pressure zone, without ejecting air directly to, or without drawing air directly from, the evaporative unit, such that air moves through the evaporative unit substantially through a pressure effect. According to another aspect of the present disclosure, there is provided a vehicle with an air conditioning unit, the air conditioning unit, including: a chamber; a fan, in the chamber, for effecting an entry air entering the chamber and an exit air exiting the chamber; and an evaporative unit, in the chamber, for conditioning the entry air; wherein the fan, together with at least part of the chamber, creates a pressure zone, without ejecting air directly to, or without drawing air directly from, the evaporative unit, such that air moves through the evaporative unit substantially through a pressure effect.

In one form, the fan is an axial fan. In one form, the axial fan ejects air towards a wall of the chamber to create a positive pressure zone. In one form, the axial fan ejects the air upwards, then the air is guided to flow horizontally before redirecting downwards through the evaporative unit. In one form, the axial fan draws air away from a wall of the chamber to create a negative pressure zone.

In one form, the fan is a centrifugal fan. In one form, the air conditioning unit further includes a structure to collect water condensed on the evaporative unit. In one form, the air conditioning unit further includes one or more louvers to adjust the exit air.

