Gas Fireplace

Abstract

A gas fireplace comprises a support and housing frame, a gas combustion chamber, at least one chimney duct for releasing flue gases, coming from said combustion chamber, at least one inlet duct for external comburent air leading to said combustion chamber, a ventilation and heating circuit designed to suck environment air, and heat and fed it at least partly into the space where the fireplace is located, and at least one motor-driven fan designed to operate in said ventilation and heating circuit. The gas fireplace further comprises at least one silencer device provided along said ventilation and heating circuit.

Description

FIELD OF INVENTION [0001] The present invention relates to an improved gas fireplace, particularly suitable for heating house spaces. BACKGROUND OF INVENTION [0002] Numerous fireplaces have been proposed in the art that are fed with gas, generally methane gas or, more recently, gpl (liquefied petroleum gas). [0003] Conventional gas fireplaces generally comprise either a frontally closed combustion chamber or a frontally open fireside, a comburent air intake, an exhaust duct for flue gases, and an air circuit designed to suck room air to be heated, to heat the sucked air, and to discharge the heated air into the room where the gas fireplace is located. [0004] Such fireplaces have a number of serious drawbacks. As a matter of fact, room air is sucked from the room where the fireplace is located, typically through openings or mouths formed in the lower portion of the fireplace, is heated mainly owing to convective heat exchange through metal walls of the combustion chamber or fireside,...

AI Technical Summary

Benefits of technology

[0010] The main object of the present invention is to provide a gas fireplace which makes it possible to eliminate or at least substantially reduce the above mentioned drawbacks. Another object of the present invention is to provide a gas fireplace having optimum efficiency, very high yield and autonomy, and suitable for quickly and evenly heating the space where it is located.

[0011] A further object of the present invention is to provide a gas fireplace that can be manufactured at a low production cost and can be easily installed.

[0015] To increase the heat exchange efficiency between the relatively hot flue gases and the external comburent air as well as the relatively cold room air, the external inlet comburent air is pre-heated through heat exchange with the flue gases being discharged along the or each chimney duct, and transfer a portion of its pre-heating heat to the room air to be heated.

Problems solved by technology

In any case, such a fireplace system is unsuitable for quickly heating room air below the warm air delivery level, where instead a quick warming is desirable as warm air flow obviously tends to flow upwards towards the room ceiling, thus resulting in an undesired heat gradient being generated, at least at the initial stage of heating a room, between the air close to the ceiling and the air below the level of the air outlet mouth or mouths, which means uneven heating of the room.

For obtaining this desired result, in recent years increasingly more powerful fans have been used, which results in a considerable increase in the noise pollution caused by large amounts of air flowing through the fan and ventilation chambers, and intake and delivery ducts.

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