WITH A COATING GENERATING HEAT WITH ELECTRICITY The invention relates to a clear cooker glass that can be heated up to 300°C thanks to a coating on the glass through electrifying it with a conducting wire mounted on the edges of the glass in line, of which a surface has at least 60% of light transmittance and which has a conducting coating that can be tempered by thermal processing.

The apparatus of state of art is a apparatus comprising a glass on which foods are put on the top and comprising a resistor that is a heat source at the bottom. Resistors used in such application is in a form of metal wire in a tube with a ceramic isolator, wherein they are heated up to 450-500°C when electrified and consume 1500 to 2500 watts of electricity. The heat generated by this resistor is firstly transmitted to ceramic isolator and then delivered to outer metal tube. The glass placed on the resistor then reaches cooking heat by carrying this heat on its surface. Glasses used in this application are the glasses on which tempering process cannot be carried out. Because heat of the glass reaches up to 400°C due to resistor. However, temperature resistances of the tempered glasses are uttermost between 350 and 400°C. when reached this temperature, the glass will be broken. Therefore, tempered glasses are not used, but the glasses which have high heat- resistant and cannot be tempered. Their greatest disadvantages are that they can be easily scratched and can be easily broken because of their low impact resistances.

In such applications, there is a very high heat loss due to fact that there are different types of materials between resistor wire being a heat source and cooking surface, ceramic is used between the cooking surface and the wire for electrical insulation and there are multilayer sheets. Furthermore, since the heat source resistor wires made of metal wire wears off highly due to their getting heated and cooled, their resistance increases as they are used which causes increased electricity consumptions. For instance, electricity consumption of the resistor is only 1500 watts in first use but it climbs up to 2500 watts as they are used. Accordingly, it gets heated in a longer time and generates less heat. The reason for this is that it contacts with air. The wire is oxidised and slowly wore off because they always get heated and cooled.

Another cooker glass apparatus is induction furnaces. Even though glass is used in such cookers, cooking process is not carried out on glass surface, but in a cannister placed on the glass. Heating is carried out by means of high induction in the cannister placed on the glass through induction coil being under the glass, this provides a cooking of foods in the cannister. Also in this application, the glass that cannot be tempered as above mentioned is used herein. Another disadvantage of such apparatus is that they consume 2000 to 5000 watts of electricity energy.

Another cooker glass apparatus known is the one in which one surface of the tempered or untemperable borosilicate glasses is coated with a dye mixed with graphite powder. These productions carry out at least 1500-2000 watts of electricity consumption in order to reach the cooking heat. In the productions with non-light transmittance, since the dye mixed with graphite used as a heat generator and expansion of the glass are not the same, cracks will occur in the dye. this causes a loss of the heat efficiency and an increased electricity consumption. Furthermore, there are such disadvantages that the machine apparatus used in the application are high-cost and the thickness of the dye cannot be made homogeneously. The dye that is not applied homogeneously causes the cooking surface not to get heated homogeneously. Therefore, proper cooking process cannot be carried out.

The glasses used in each of the applications above mentioned are not clear, but mostly black. In the other applications expect for the application in which the graphite powder is mixed, since the cooking surface exceeds 300°C, it burns fat on the food that is cooked, this causes smoke therein. As it is known, when the fat in the food reaches up to 300°C, it burns which causes smoke therein. In the productions made by means of applying the dyed mixed with graphite, even though there is no smoke during the cooking process, it is black with no light transmittance and the energy consumption in the present invention is much higher than said cooker glass. By means of this invention, the cooker glass is directly heated through the electricity given to metal wires mounted along the reciprocal edges of the conducting coating having at least 60% of the light transmittance on one surface of the cooking glass. Physical and chemical resistance of the coating is very good since the tempering process is applied to the cooker glass that is coated. Therefore, it has the same quality as the security glass in automotive, architectural and white goods sectors do. It also has no ill effects because there is not any coating on the cooking surface.

The system created so as to allow the invention to achieve its aim is disclosed through referring the present figures. The figures;

Figure 1 shows a general view of the cooker glass system having the coating generating heat through electricity.

Figure 2 shows a AA cross-section view of the cooker glass group. The parts in Figures are individually numbered wherein the parts corresponding to these numbers are disclosed below:

1- Cooker glass group

1.1- Cooker glass

1. la-Cooking surface

1. lb-Coated surface

1.2- Insulating plate

1.3- Silver pasta

1.4- Conducting metal wire

1.5- Adhesive

2- Electronic card group

2.1- Power control card

2.2- Control card

2.3- Signal transmitting card

2.4- Conducting wire

The cooker that is designed by means of the present invention comprises of two groups of material. Those are the cooker glass group (1) and the electronic card group (2). The cooker glass group (1) comprises of two main materials. Those are the cooker glass (1.1) and the isolating plate (1.2) placed underneath. The cooker glass (1.1) is the glass produced in accordance with our patent application numbered PCT/TR/2017/050270. According to the said application, the lower surface of the cooker glass (1.1) has a conducting coated surface (1.1b) and the upper surface has a cooking surface (1.1a) on which any processes are not carried out.

The silver pasta (1.3) is carried out along the reciprocal edges of the coated surface (1.1b) of the cooker glass (1.1) and then the tempering process is applied. Thus, the conducting coated surface (1.1b) and the silver pasta (1.3) get permanence through connecting with the cooker glass (1.1); their physical and chemical resistances also become equal to the cooker glass (1.1). The silver pasta (1.3) is used for homogeneously transmitting the electricity applied to the coated surface (1.1b). After tempering process, it is made suitable for the electrical connection by soldering (by mounting) the conducting metal wire (1.4) transmitting the electricity on the silver pasta (1.3).

The isolating plate (1.2) is used for providing both the electrical and heat insulation under the coated surface (1.1b) of the cooker glass (1.1) and for preventing the coated surface (1.1b) from damaging the lower base due to the heat caused by the cooking process.

The reason of which the tempered glass is used is that the physical and chemical resistances of the untempered glass is too low and its thermal endurance is not high enough to endure the temperature of the food cooking. Therefore, the untempered glass is not preferred in the cooker glasses. The borosilicate glass is used only in the furnaces with induction and resistor. The reason for that is that it can endure the thermal expansion. However, their physical endurances are lower compared to the tempered glasses since the tempering process is applied to these glasses.

In this invention, there is not any heat loss while transmitting the heat on the cooking surface (1.1a) because the conducting coating designed as a heat generator on the lower surface of the cooker glass (1.1). The lowest-energy (maximum 900 watts) cooker glass (1.1) has been produced by means of directly putting the food to be cooked on the cooking surface (1.1a) of the cooker glass (1.1) and the electrical operation mode of the coating on the coated surface (1.1b). Since the heat-generating coating on the coated surface (1.1b) is embedded into the glass through the tempering process, its physical and chemical resistances are equal to the glass (1.1). The case of the coating process being applied into the cooker glass (1.1) also has increased the efficiency and the life span compared to the like. By means of the fact that the coated surface (1.1b) generating the heat are on the same material as the cooking surface (1.1a) is and there is no other materials therebetween, the heat that is generated is directly transmitted on the cooker glass (1.1a). Furthermore, the electricity consumption will be not changed since there is no oxidation by means of the fact that it is united with the cooker glass (1.1).

An isolating plate (1.2) (preferably glass) is used under the cooker glass (1.1) produced as above mentioned for the sake of both heat and electricity isolation. The isolating sheet (1.2) used for preventing the coated surface (1.1b) from damaging the lower base during the cooking process and isolating the electrical coated surface (1.1b) is made of materials such as teflon, ceramic, glass which endures the high-cooking temperatures and of dielectric materials.

The cooker glass group (1) is fastened to each other by means of applying adhesive (1.5) by placing the cooker glass (1.1) and the isolating sheet (1.2) underneath such that the coated surface (1.1b) on which the coating is applied. During the adhesive process, the ends of the conducting metal wires (1.4) soldered to the silver pasta (1.3) on the cooker glass (1.1) provided for the electricity connection is provided such that said ends are in the open. The adhesive that is used also are the materials that can endure the high temperature and the chemicals and constitute no harm when contacted with foods.

There is no isolation on the cooking surface (1.1a) because the coated surface (1.1b) of the coated cooker glass (1.2) a surface of which transmits electricity contacts with the isolating sheet (1.2). The cooking surface (1.1) which is absolutely natural structure of the glass constitute no harm in terms of health. Foods to be cooked will not be exposed to the chemicals derived from the cooker glass (1.1) because there are no changes in the chemical structure of the cooker glass (1.1) by means of the fact that it is heated up to maximum 300°C. Furthermore, because the cooking surface (1.1a) is heated up to maximum 300 °C, it causes no smoke by not burning the fat in foods to be cooked. By means of the non-stick properties of the natural structure of the glass, problems will not be occurred by stick and stain caused by the foods to be cooked. In case of the cookers of which a surface contacts with the foods, a special chemical coating is applied on the glass in order to avoid sticking, this both takes special usage methods and poses a risk of exposing the foods cooked thereon.

Electronic card group (2) comprises of a power control card (2.1), a control card (2.2), a signal transmitting card (2.3) and an electric transmission wire (2.4). The power control card (2.1) is the portion which transmits the electricity to the cooker glass (1.1) according to the instructions sent by the control card (2.2). The power control card (2.1) applies one of the methods for the electricity transmittance stated in our patent application numbered PCT/TR/2017/050270 to the cooker glass (1.1). One of the electronic signal types defined as a discrete (an intermittent frequency method) and a clipped (a truncated frequency method) signal is selected according to the heat desired to be reached and the resistance of the cooker glass (1.1) stated in the very application.

Control card (2.2) is the card that manually controls the heat of the cooker glass (1.1), timer, child safety latch etc. The controls carried out by user through the instruction buttons on the control card (2.2) are transmitted into the power control card (2.1) through the signal transmittance line (2.3).

The power control card (2.1) handle the electrical arrangements according to the instructions sent by the control card (2.2).

The power control card (2.1) then carries out the electricity transmittance to the conducting metal wires (1.4) soldered to the silver pasta (1.3) on the edges of the cooker glass (1.1) according to the sent instructions. Said transmittance is carried out by the conducting wires (2.4). Thus, the system is worked in accordance with the instructions determined by user. Materials such wire, electrical sockets as the signal transmittance line (2.3) above mentioned can be used. The cooker glass is produced by means of the invention which has a coating generating heat on one surface thereof and thus has no heat loss while transmitting the heat, has a lower energy consumption compared to the like, has a self-nonstick property and has no chemical effect on the foods to be cooked thereon. The production subject to the invention can be used any types of system used so as to cook, warm up and boil foods.

The production subject to the invention cannot be restricted with described herein and with the models disclosed in figures. Changes on the invention can be carried out towards the form independent of the scale and materials, the position of the parts used can be replaced, the number of the parts used can be changed, different parts having similar properties can be used instead of the parts used and optionally, the system can be used even without some of the parts. It is obvious that these are within the scope of the invention.