DE2115251A1 - Gas stove - Google Patents

Description

η 15751

DR. HUGO WILCKEN DIPL.-ING. THOMAS WILCKEN D - 24 LÜBECK, BREITE STRASSE 52-54

Z March 9, 1971 Cs./Al.

Applicant: COLUMBIA GAS SYSTEM SERVICE CORPORATION, Wilmington (Delaware), Montchanin Road 20, U.S.A.

Gas stove

The invention relates to gas stoves, the upper Completion is flat or continuously flat, and in particular on stoves according to the American patent 2 470 682, in which the infrared radiant heat heating is used.

The object of the present invention is to provide improved gas ranges of the type disclosed in the aforementioned patent to be provided. Another object is to provide an improved control for gas burners according to that in the aforesaid patent disclosed type to be provided. These and other tasks will become more fully apparent from the detailed discussion below the invention.

Show it:

Fig. 1 A perspective view of the carcass with broken away Parts of an execution example according to the invention,

Fig. 2 a partial supervision of the construction according to Figure 1,

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• UtMdc (0451) 758M, Mveti Dr. H. Wild. ", Curau (04SM) 210 · Wpl.-lnf. Th. Wlldcen, Lubeck (251 045JJ 3 »refuels Comnwzbonk A, Q, R. L0b.dc, Kto.-Kr. W 0117 PoitidiKki Hambure 13811»

Pig. 3 shows a cross section along line 3-3 of FIG.

Mach Figure 1 shows a flat-headed, gas-heated cooking stove 2 four burner units 4, 6, 8 and 10. Each burner unit is made of an integral sheet material composition 12 (Fig. 3) formed, which is supported in a bucket-like housing 14 made of sheet metal. The housing 14 has a bottom wall 16

^ (Fig.3), a rear wall 18, side walls 20 and a front structure 22. The front structure 22 includes a horizontal upper strip 28 and a lower strip 27, both of sheet metal material, and a vertical ε front panel 24. The strip 28 is attached at its ends to the side wall 20, and at its rear edge is an angle strip that a ledge 29 forms. The angle strip also extends along the sides of the housing where it is near the top of the side walls is attached. In the rear of the housing there is an air outlet grille 26, which is on an angle strip

w 31 rests, which is attached to the wall 18 and to a transverse strip 33, the strip 31 in front of a support ledge.

See, and which is also an extension of the Simps 29.

Resting on the ledge 29 is a plate 30 made of heat-resistant Glass whose top surface is flush with the top surface of housing 14 and grill 26. The plate 30 sees a removable closure for the upper end of the housing in front and forms a "closed" air chamber 61, at the rear Area through the grill «is available through the

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let out hot gases and air. Each burner unit 4, 6,8 and 10 has an annular flange 35, the old the The ledge 29 is aligned so that the plate 30 sealingly presses against the sill and the top of each burner assembly effectively closes. As will be explained in more detail below, plate 30 is very effective in transmitting infrared radiation, and during during use, it is heated to a relatively high temperature. As a result, a round part of the plate 30 stands above Each burner unit represents a smooth cooking surface on which cooking utensils can be placed to through the combined Effect of the heat from infrared radiation and heat conduction to be able to be heated.

As shown in the upper left corner of Figure 2, is a small fan 60 attached to the front panel 24 to draw air through a grill 66 τοη in front of the oven into the chamber 61. The fan 60 has an electric motor 62 which is automatically fed when each of the burner units is switched on. The ventilator does not generate any substantial air pressure, but it does provide a sufficient volume of air in the chamber 61 to be contained therein to maintain or maintain a state of light pressure or slightly increased air pressure. As explained below is, this slightly increased air pressure τοη the burner units Used in the way to get much better results to deliver. The grill 26 allows the excess air to escape the chamber, however, the grill provides sufficient resistance to the air flow gate to produce the desired air

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Get pressure in the Säumer 61. The increased air pressure around around the burner units creates a tendency in the air to penetrate the burner units. The excess air flows in past the burner units to cool their free standing surfaces and is then discharged up through the grill 26.

Each burner unit has a storage space or collecting space close to the floor, into which a mixture of gas and air flows through a tangential feed channel 38 is supplied. A variety of adjustable elbow compositions 45 »attached to the Bottom of the housing 14, support the burner assemblies. The upper area of the burner units is enlarged, to provide an annular ledge 39 on which an infrared fuel element 41 rests made of wire mesh. The burner element 41 sees one through the top of the cylindrical plenum 36 going combustion surface before. Above the burner element 41 sees the cylindrical hot gas chamber 43 a heating zone gate, clay which consists of heat as a result of infrared radiation and heat conduction pass a round area of the plate 30.

In the side wall of the collecting space 36, a tangential supply channel 38 is attached, which is an outwardly widened open Ende 40 owns “At a distance from and aligned with the open At the end 40 of the channel there is a gas feed valve 42, which Gas tone receives a feed pipe 48 and which controls a kmopf 44 attached to the front panel 24. volume

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The Yentil is gas horizontally through a gas discharge nozzle 46 discharged, towards the outwardly flared open end 40 of the channel 38, creating a Yenturi arrangement is formed, causing the gas the desired amount of slightly compressed fresh air from the chamber 61 for adequate Burning away. Rotation of a knob 44 to open the valve 42 also switches the fan motor 60 and an igniter 49 for the burner in question, which is fastened in the ledge above the burning surface, in order to close the burner ignite. The burner element 41 consists of a wire mesh, which generates infrared radiation when the burner unit is ignited.

Extending rearward from each hot gas chamber 43 is a rectangular gas outlet channel 50 which extends below the Grille 26 ends and has an upper gas outlet port 52 and an end wall 54, the latter of which carries gas up through the Grill distracts. As a result, when a burner unit is operating, the hot gases are discharged through the opening 52, and there is a sufficient jet effect to ensure a circulation of fresher

To effect air in the grill, so that the fresh air with the

ι mixes hot gases and dilutes them and lowers the temperature of the hot gases that pour up through the grill. As shown above, the circulation of the air through the housing 14 prevents excessive heating of the walls of the burner units. This characteristic is very important, particularly \ sondere in herds for domestic and general use.

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When air is drawn in through a jet of gas at atmospheric pressure, there are usually limitations in that Respect that the heat effect of the burner is reduced. With the In accordance with the present invention, however, these difficulties are slightly increased by the simple method of creating a state τοη Air pressure in chamber 61 switched off. The slightly excessive air pressure in chamber 61 ensures that air is entrained through the gas, even at very low gas flow values, which means that the burners are tuned over a wide heating range can. The mentioned condition also ensures an adequate discharge of the combustion products from the burner units and additionally gives useful cooling effects as mentioned above.

When a burner is ignited, the infrared radiation is transmitted or transmitted through the circular area 56 of the plate 30, which is the part or zone of the plate that is "above the burner unit and through the flange 35" is defined. The round area 56 is also primarily heated by conduction from the hot gases in the chamber 43, but there is also some heating effect from infrared radiation. In this embodiment, this round area 56 becomes one ignited burner unit heated to a temperature τοη about 540 to 595 ° Celsius. A utensil or another on the round Area 56 is set by the combined and direct action of both infrared radiation from distilleries ment 41 and the heater through the round area 56 is heated.

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The heating by the round area 56 can be primary / direct There will be heat conduction, but there is also substantial radiation from the circular area. As stated above, there is the plate 30 made of heat-resistant glass and has a very low heat transfer factor. Hence, if the round area 56 is raised to a very high temperature, a negligible heat transfer in the horizontal direction along the plate 30 behind the edges of the round area 56, i.e. behind the flange 35. Therefore, the plate 30 remains in the substantial room temperature, except for the specific surfaces or areas heated by the burner units. It it was stated above that the τοη discharged gases from an ignited burner produce a jet effect which is called hot Gases and the fresh air cause them to mix and flow upwardly out of the grill 26. The circulation of the fresh Air through the chamber 61 helps maintain the space temperature state of those areas of the plate 30 that are are not located above the various burner units. !

The tangential channel arrangement for the delivery of the air-gas mixture in the plenum 36 helps in the goal of a satisfactory Flow pattern of the Gae-Air flow and Gas-air distribution within the collecting space to ensure even combustion and infrared radiation over the entire combustion surface to secure the burner unit. The combustion products flow horizontally τοη the hot gas chamber 43

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of a burner alters a relatively low flow value. This allows the gases to heat the circular area 56 and then to flow out to the rear, as explained above.

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Claims (5)

D - 24 LÜBECK. WIDE STREET S2-54 3 2 March 9, 197t Cb./Al. Applicant ι COLUMBIA GAS SYSTEM SERVICE CORPORATION, Wilmington (Delaware), Montchanin Road 20, U.S.A. Claims Gas stove, consisting of a housing construction with a. at its upper end -provided hit-resistant glass plate, the Heat through infrared radiation and conduction of closed Gas burner units transmits, each burner unit having a storage space or collection space and a hot gas chamber with a Infrared radiation generating, the upper part of the plenum and the bottom of the hot gas chamber forming fuel assembly and a Equipment for delivery of an air-gas mixture to the collecting room which includes a nozzle for supplying combustible gas into a supply channel connected to the plenum and air affects, with the gas in the collecting space su flow, wherein the glass plate swecks shut off the hot gases extending over the top of the hot gas chambers and causes the gases to flow through hot gas exhaust paths through the hot gas chamber to flow out of the stove, characterized in that the housing construction (12) and the glass plate (30) form an air chamber (61) and that a fan (60) to supply air into the chamber (61) swecks construction and maintenance one that is greater than the atmospheric pressure 109843/1205 Air pressure is provided in the chamber while at least one Burner is in operation. 2. Gas stove according to claim 1, characterized in that it is a Includes grill (26) which forms an upwardly blinded gas outlet from chamber (61) and that provides hot gas outflow paths (50) are arranged, which are called passing them _fc to allow gases to flow up through the outlet. 3. Gas stove according to claim 2, characterized in that the grill is adapted to complicate the flow of the air flowing through it, in order to maintain an air pressure in the chamber (61) which is slightly higher than the atmospheric air pressure. 4. Gas stove according to claims 2 or 3, characterized in that air is fed into the air chamber (61) at one point, which is located away from the outlet grill that the flow of the in relation excess air to the air desired for the burn serves to cool the cooker and to lower the temperature of the discharged hot gases. ι j 5. Gas stove according to claims 1 to 4, characterized in that j that the housing structure (12) and the gas burner units (4,6 8,10) are formed from sheet material. 100843 /