CZ9903654A3 - Gas infrared radiator - Google Patents

Abstract

Gas infrared heater, with air for combustion to by diffusion or by a ceramic fan a combustion plate (2) at the bottom of the mixing chamber (1), from the top cover (4) and from the faces (9), it has a sheet metal reflectors (7) and top cover (4) placed ribbed a recuperator (6) for preheating the inlet air for combustion. The ribbed recuperator (6) is preferably formed as a sheet metal bellows (12, 15) with horizontal alignment or vertically. It is adjustable in one of the faces (9) slide valve (18) with projections for connection to a common flue gas exhaust (11) and a correct setting exhaust gases.

Description

Oblast tachnikv

The invention relates to a gas infusion valve for gas, a gas supply pipe, consisting of an insulated upper lobe and side shields which are reflective surfaces.

BACKGROUND OF THE INVENTION

The hitherto used gas infrared heaters, mostly with the Czech ceramic heating plant and atmospheric air suction, have a higher thermal efficiency, because a large part of the heat is carried by hot flue gases (up to 3 ° C) in the upper parts of the heated asteroid. In turn, infrared heaters with air stitching to the combustion area around the reflective surface by a fan or a gas diffusing function do not take full advantage of the possibility of heating the air over a larger heating surface and higher temperature, thereby improving combustion efficiency. The hot flue gas goes under the roof of the hall, which in turn forces additional ventilation of the hall.

Substance_of the invention

The gas infrared heater, which constitutes the gas control valve, largely removes these drawbacks, and a gas supply tube placed in a mixing chamber, preferably further comprising an insulated top cover, a heating plate preferably ceramic in the lower part and side covers extending downwards by means of open reflecting surfaces, characterized in that on at least one side of the mixing chamber under the upper cover, preferably insulated, is a finned recuperator preferably made of sheet metal for preheating the inlet air before combustion, its fins being protrusions or waves, from top to bottom, they are folded into the grooves at their ends by squeezing and glued fingers formed at the top of the grate edges and at the bottom of the outer cover or collar. The radiators with the sleeve of the stainless steel plate are the gas outlets of the fine groove of the multi-walled involute.

In one of the faces, an adjustable slide and projections are provided for the possibility of connecting and throttling the flue gas fan by a common exhaust fan from several radiators.

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To prevent heat radiation directly to the heat exchangers, metal reflectors with openings of hot flue gas inlets are placed in front of them - these are bent at the fronts to create a space of possible flue gas exhaust

In order to separate the flue gases rising (normally forced suction) in the upward direction, the walls with the orotice heat exchangers are shortened. In circular radiators, the edges of the lower collar are then bent alternately up and down.

To further utilize the residual heat of the flue gases of ceramic plate heaters, additionally connected to a common flue gas exhaust, by radiating downwards, shiny reflectors or upper non-combustible insulation are installed on the ducts at the end.

Overview of Images-in-Drawings.,

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rectangular gas infrared heater in longitudinal section. Giant. 2 is the same infrared heater in cross section. It shows mainly the positioning of the fan with supply air throttling, recuperator with protrusions (right), recuperator with waves (left), metal reflectors and adjustable slide valve with projections (in the middle) for the possibility of connection to the common exhaust flue. Giant. 3 is a cross-sectional view of a radiator having a wave recuperator from top to bottom and the ends of which are sealed by the interposed fingers of the louder paradise of the grate (top) and of the cover (bottom). Dbr. 4 is a detector of a heat exchanger having waves vertically and finger detail into the waves. Giant. 5 is a detail of a laser cutout in the face from which, after breaking, an adjustable slide with lugs is provided for the possibility of connecting the flue gas exhaust of the assembly. 6.

Giant. 7 is a simplified infrared heater in which the recuperator with the waves is vertically twisted (FIG. 3) and the outer cover is replaced by a collar with corners bent alternately up-down. The upper fan has its propeller directly above the grate and the control elements are directly at the end of the fixed gas pipe. _O br. 8 shows a method of replacing a ceramic combustion plate by means of fine involute-shaped grooves directly in a metal grate. Fig. 10 shows the method of connecting known luminous emitters to a common flue gas exhaust and details of the alignment of light reflectors or incombustible insulation on this pipe.

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Example of carrying out the invention

1 to 7 is a gas infrared heater with a ceramic heating plate (1). It is newly supplemented with a finned heat exchanger (6) which converts the heat of the downward hot flue gas back into the intake air. The finned heat exchanger (6) is preferably a sheet metal bellows with horizontal alignment of the waves (12) which is simpler to manufacture, or with vertical alignment of the waves (15) of Figs. 3 and 7, which is more thermally efficient. When aligning vertically the waves (15) are sealed at the edges inserted and glued hundred p ^r (16) which are formed in regions above the grate (17) and bottom regions of the upper shell (14) of FIGS. 3 and det _4

In one of the faces (9) there is an adjustable slide (18) and clips (36) for the possibility of connecting the flue gas exhaust and throttling the correct flue gas flow to a round 100% emitter produced. The adjustable spool (18) is preferably a laser cut preform (19) which is offset below and secured by the screw (20) to the details 5 and 6.

The device according to FIG. 7 is further simplified in that the exchanger (6), the metal bellows with the alignment of the waves (15) vertically, is twisted in the shape of a circle (27), thereby eliminating the connecting corners necessary for split surfaces. shape rectangle. The fingers (16) for sealing the lower portion are provided on the collar (24), the corners of which are alternately bent down (25) and up (26). This achieves the division of upwardly rising flue gases into several streams (A), wherein the intake of combustion air is other streams (B), and the flue gases are not sucked in instead of air.

The automatic controls with the gas valve (30) are on the fixed part of the gas supply pipe - to prevent them from overheating with rising flue gas (A). The fan impeller (23) and the gas outlet (39) are positioned in the interspace (28) of the inclined portion (29).

As a result, air and gas are sucked into the combustion chamber and the recuperation device need not be gas-tight. The stainless steel combustion plate (40) has a gas outlet formed by fine grooves (42) twisted in the shape of a multi-walled involute which is a shape in which dilation due to glowing is equalized by rotation and the plate does not bulge. more above each other - rotated det.9.

The flue gas duct of the luminous infrared heaters Fig. 10 has an exhaust fan at the outlet and adjustable valves (35) at the inlets.

In radiators with insufficient or no heat recovery from the flue gas, the ducts (11) are provided with glossy reflectors (32) or non-combustible insulation (33) in adjacent parts to the radiators to redirect and emit residual flue gas heat from the ducts towards the hall floor.

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Industrial applicability

The gas infrared heater according to the invention can be manufactured by conventional engineering technology. It is suitable especially for heating of high halls and industrial plants. The addition of flue gases outside the hall increases, among other things, usability for more hygienically demanding premises, eg cultural ones.

Claims (10)

P ^ T ENTITLEMENTS 1. The gas infrared heater comprises a gas regulating valve, a gas supply tube, a diffusing inlet air accelerator or an air fan, consisting of an insulated top cover, a bottom plate with a heating plate and side covers which extend downwardly by reflecting surfaces. at least one side of the mixing chamber (1) under the upper cover (4), preferably with insulation (5), is a finned recuperator (6) for preheating the air for combustion, upstream of it are sheet reflectors (7) with hot flue holes (8) , in one of the faces (9) an adjustable slide (10) is provided for the possibility of connection to a common exhaust of the flue gases outside the hall by means of pipes (11), non-ceramic combustion plates - stainless involute-shaped fine grooves (42). Gas infrared heater according to claim 1, characterized in that the finned heat exchanger (5) is a sheet metal bellows (12) with an upper side interposed between the grate (13) and the sheet metal. reflectors (7) and bottom-mounted with cover (14) Gas infrared heater according to claim 1, characterized in that the finned heat exchanger is a sheet metal bellows (13) with waves vertically and its ends sealed by inserted fingers (16) formed at the edges of the grate (17) and the outer casing (14). ). Gas infrared heater according to claim 1, characterized in that the adjustable slide (18) is obtained by refracting from a laser pre-cut (19) with an alignment with a screw (20). Gas infrared heater according to claim 1 with an air fan from above Fig. 2, characterized in that the air volume control plate (21) concurrently covers the enlarged opening (22) for insertion of the propeller (23). The gas infrared heater according to claim 3 further simplified in Fig. 7, characterized in that its metal bellows (15) is twisted into a circle (2?), ^{And the} fingers (16) for sealing the lower part are formed on the collar (24) whose the outer edges are alternately bent down (25) and up (26). 9 9 9 9 9 9 9 9 9 9 9 9 99 99 99 Gas infrared heater according to claim 6, characterized in that the air fan located above has a propeller (23) inserted into the hot part of the interspace (28) of the inclined part (29) of the grate (17) and the automatic control with gas valve (30). ) are located at the end of the fixed gas pipe (31) » The gas infrared heater of claim 1, characterized in that the gas outlet openings in the stainless steel plate (40) are fine grooves (42) twisted into a multi-walled involute shape and, if two are one above the other. (43). 9. The exhaust gas outlet pipe of the ceramic plate gas infrared heaters according to claim 1 and other Figs. G) is characterized in that an adjacent reflector (32) or non-combustible insulation (33) is arranged in the adjacent part to the ceramic radiator. . 10. Ceramic plate gas infrared heaters according to claim 1 and others arranged in a plurality in one hall, fig.10 characterized by the fact that they are connected to a common flue gas duct equipped with an exhaust fan (34) at the outlet and adjustable valves (35) at the inlets. .