Double-screened gas heater with dancing flame

Abstract

A double-screened gas heater includes an outer screen, an inner screen, and a gas burner. The outer screen is of a vertically erected hollow configuration ahs includes a plurality of through holes formed therein. The inner screen is of a vertically erected hollow configuration and is disposed inside the outer screen. The inner screen includes a plurality of through apertures formed therein. The gas burner is arranged in a bottom of the inner screen and includes a plurality of burner ports. The burner ports are arranged in side the inner screen. The outer screen and the inner screen collectively form an inner/outer double screen arrangement, which allows for projection of the thermal energy to the surroundings in the form of heated air and thermal radiation so as to achieve an optimum effect of heating and warming. The outer screen provides protection of users against burns by high temperature.

I claim: 
     
         1 . A double-screened gas heater, comprising:
 an outer screen, which is of a vertically erected hollow configuration, the outer screen comprising a plurality of through holes;   an inner screen, which is of a vertically erected hollow configuration and is arranged inside the outer screen, the inner screen comprising a plurality of through apertures, the inner screen having a lower portion that comprises an aperture-free shielding section; and   a gas burner, which is arranged in a bottom of the inner screen, the gas burner comprising a plurality of burner ports, the burner ports being partly or completely shielded by the shielding section.   
     
     
         2 . The double-screened gas heater according to  claim 1 , wherein the inner screen is higher than the outer screen, the inner screen having a top, which comprises a flue gas baffle mounted thereto so that the flue gas baffle and a top edge of the inner screen define therebetween a gas discharge passage. 
     
     
         3 . The double-screened gas heater according to  claim 1 , wherein the through apertures of the inner screen have a diameter of 0.9-2 mm. 
     
     
         4 . The double-screened gas heater according to  claim 1 , wherein the outer screen, the inner screen, and the gas burner are mounted on a base and the outer screen has a top to which a top cover is mounted. 
     
     
         5 . The double-screened gas heater according to  claim 1  further comprising an external device, the external device comprising a carrier, a plurality of support braces, and a top cover, the carrier being arranged beneath the outer screen, the support braces being vertically erected and mounted to a top of the carrier in such a way that exposure spaces are formed between the support braces.