the construction is , of course , not limited to the embodiments which are shown and described , but can be varied in many ways within the scope of the following claims . this concerns not only the number of burners 1 but also their relative location , along with the number of perforated ceramic plates 3 , 3a , 3b included in each burner 1 and their appearance regarding the shape of the holes 2 , 2a , 2b . the main component of the arrangement is a gas powered burner 1 , the basic form of which includes plates 3 of ceramic material perforated by holes 2 . the shown embodiment comprises three plates 3 , 3a and 3b , each provided with holes 2 , 2a , 2b . the plates are placed in a frame 7 with a distance 8 between the outer periphery of the plates and the inner periphery of the frame . frame 7 is further provided with openings 9 to allow the supply of oxygen to one or more combustion chambers 5 . a conduit 4 is attached to the burner 1 to provide a supply of gas . after being ignited , the gas warms up the perforated plates 3 , 3a , 3b to red - hot temperature , whereby infra - red radiation is transmitted , said radiation being of a comparatively high frequency and thereby effective . the holes 2 , 2a , 2b can be round , three -, four -, five -, or six - sided or can have another shape for forming a pattern . each of the plates 3 , 3a , 3b is displaceable in its plane . in this way the ceramic lattice work of the three plates 3 , 3a , 3b obtains holes with different opening widths in different regions . thus the amount of gas flowing through the lattice work can be regulated to achieve the optimum effect . as far as possible , the combustion should occur inside the lattice work . in order to prevent the combustion from reducing to an undesirably low level due to insufficient oxygen , the plates can conveniently be moved apart . fig1 shows the plate 3b moved a little from the plate 3a for forming an air - gap 5 between these plates . in this way the oxygen supply to the combustion zone can be resulted and at the same time it can be ensured that the combustion occurs entirely inside the lattice work so that the energy content of the gas is absorbed to a maximum by the plates 3 , 3a , 3b . the plates which lie in contact with the combustion area will hereby start to become red - hot and the outermost plate 3b emits energy in the form of infra - red radiation . the wavelength and the intensity are dependent on the energy supplied and the choice of materials for the burner elements . the wasted energy which flows out into the air is hereby negligible and the burner 1 thus functions very economically . in order to avoid that the combustion zone , due to unfavorable adjustment of the plates 3 , 3a , 3b , moving into the space behind the plates , this space is suitably filled up with any mineral wool , filter material 6 or the like . this material firstly presents an explosive type combustion of the gas , but at the same time provides a uniform distribution of the gas over the rear side of the lattice work . due to the fact that the plates are relatively adjustable , the burner 1 can be attached upright and meat juices from food products will therefore never contact the burners &# 39 ; surface , but instead they will travel down towards to the bottom plate . in this way no smell occurs . the ignition of the gas can occur in a conventional manner using matches or fire lighters but it can also occur using a more sophisticated technique , such as for example a piezo - electric manner . an automatic ignition system of this type can conveniently be placed in the intermediate space between the flow - limiting plate combination and the heat radiating plate / plates combination . a combustion monitoring cut - out can also be placed in this intermediate space . fig3 shows a combination of three burners placed close to each other and with a gas conduit 4 connected to each one of the burners .