Air condenser

Abstract

The invention relates to a cylindrical air condenser having a heat exchanger which has a cylindrical or polygonal shape that develops in a vertical direction (Z) from a base or bottom to a top, and a suction device provided with a motorized fan housed in a frame arranged on the top of the heat exchanger. The cylindrical condenser includes a distributor element, housed inside the heat exchanger coaxially therewith. The distributor element has a plurality of conduits arranged coaxially one to the other, and have a progressively increasing height from the top to the bottom of the heat exchanger and a progressively decreasing transversal dimension. The configuration of the distributor element is such that, starting from the top towards the base of the heat exchanger, a plurality of through openings (A1-A6) whose areas are nominally identical are defined therein in the vertical direction (Z).

Description

TECHNICAL FIELD OF THE INVENTION[0001]The present invention relates in general to the field of refrigeration systems and of air conditioning apparatuses. More particularly, the invention relates to a vertical discharge air condenser for such systems and apparatuses.BACKGROUND[0002]Refrigeration and air conditioning systems use refrigerant circuits based on the circulation of a fluid between an evaporator and a condenser connected by special pipes, in which the fluid exiting from the evaporator is fed towards the condenser by means of a compressor and the fluid coming out from the condenser recirculates towards the evaporator passing through a rolling valve.[0003]In a refrigeration and conditioning system the condenser is typically a unit located outside the room to be cooled, which exploits the air of the surrounding environment as a means for cooling the gas circulating in the refrigeration circuit. The air flow through the condenser depends on the configuration of its structure. F...

AI Technical Summary

Benefits of technology

The patent text describes a new design for an air conditioner heat exchanger that improves heat exchange efficiency. The design includes a distributor element and openings that equalize the flow rate from bottom to top, minimizing concentrated pressure drops. The air speed near the walls of the heat exchanger is constant from the base to the top, allowing the entire radiating surface to be used. The design also includes flow regulators for optimizing the air flow along the walls of the heat exchanger. These improvements lead to higher thermal efficiency compared to vertical flow condensers.

Problems solved by technology

In a too high structure for the suction capacity of the motorized fan, it may happen that, due to distributed pressure drop, near the base of the heat exchanger there is not enough air flow to allow an adequate exchange of thermal energy in the form of heat, or that there is no air flow.

It follows that the surface of the heat exchanger is not exploited optimally and / or entirely, which penalizes the efficiency of heat exchange.

An increase of the rotation speed of the motorized fan in order to increase the flow rate of the air flow that may be sucked involves a greater noise level of the condenser as a whole, i.e. of the heat exchanger and of the suction device mounted thereon, which is not acceptable or generally allowed by present regulations.

The present regulations also limit the maximum power of electric motors that can be used in suction devices.

The use of these panels, however, has the disadvantage of generating pressure drops concentrated in correspondence of their through openings, which penalizes the heat exchange efficiency of the heat exchanger.

Furthermore, the presence of the panels along the walls of the heat exchanger undesirably increases the noise of the air condenser as a whole.

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