TR201718646T4 - An induction heater stove. - Google Patents

Abstract

The present invention includes a top plate (3) produced from a material such as glass or ceramic, multiple induction coils (2) placed under the top plate (3), and more than one induction coils (2) that provide heating of the ferromagnetic cooking vessel placed on it with the magnetic field it creates at least one electronic card (4) that provides energization, more than one switching element (5) connected to the electronic card (4) and carrying electrical current, heated by the effect of the current carried, a fan (6) located under the upper table (3), and It relates to an induction heater oven (1) comprising at least one heat distributor (7) that distributes the air blown by the fan (6) and provides cooling of the switching elements (5) placed on it.

Description

DESCRIPTION OVEN WITH AN INDUCTION HEATER This invention relates to a cooktop with an induction heater, which is provided for safe operation. Heating of the cabinet by the effect of the magnetic field created by the induction coil works according to the principle. The heat required for cooking is the gas or gas on the hob. Since it is not produced in electric combustibles, it is produced directly in the cooking cabinet. The energy efficiency of hobs with induction heaters is quite high. Magnetic field IGBT on the electronic board for driving the induction coils Electronic switching such as (Insulated Gate Bipolar Transistor) and diode bridge A high amount of electric current is passed through the elements and therefore said switching elements overheat. switching have an effective cooling system in order for the components to work safely. is needed. In the state of the art, the most warming is seen, High current carrying switching elements are connected to a heat sink. It is cooled by connecting it and sending air by means of a fan. To ensure that the induction heater stove works in safe conditions The temperature of the switching elements must be kept under control.

When the switching elements reach the critical temperature defined by the manufacturer The current passed over it is interrupted by the control unit.

In stoves with induction heaters, which are in the state of the art, the temperature A sensor (2`) used in the measurement of switching is connected to the heat spreader (3'). The temperature of the element (4') is tried to be kept under control. But the temperature of the switching element (4') and the heat sink (3`) will be different from each other. For this purpose, an effective and safe control mechanism cannot be provided. Sensor (2'), heat The temperature measured by the sensor (2') is switched on as it contacts the distributor (3'). is lower than the actual temperature of the element (4'). The process of turning off the stove Since it is determined depending on the temperature values measured by the sensor (2'), both that does not compromise on cooking efficiency and provides safe working conditions it is essential to carry out a temperature control.

European patent numbered EP1936283 in the state of the art In the application, the heat spreader should cover at least a part of the heat spreader. on the switching elements of a part of the cold air placed on the a cooking appliance containing a router for directing is defined.

According to the entry of the claim in the Japanese patent document No. JP 2011 19862] cooktop with induction heater is mentioned.

The aim of this invention is to ensure that the temperature of the switching elements is as close to reality as possible. of an induction heater stove, whose safe operation is ensured by measuring is realization.

The present invention is defined by the claims and placed on the switching elements. at least one heat sink that provides cooling of the switching elements the heat sink is placed on the heat spreader so that the switching elements remain between them. A plate made of a thermally conductive material placed on the plate a sensor used to measure temperature and the temperature transmitted from the sensor A control that provides power transmission to the switching elements depending on its data. contains the unit. Switching elements due to current passing through is warming up. Switching by spreading the cold air blown by the heat dissipating fan It provides cooling of the elements. The plate transfers heat by conduction between them. It is placed on the switching elements so that there will be transfer.

Thus, when the switching elements heat up, the plate also heats up. your plate its temperature is almost equal to the average temperature of the switching elements. is happening. Thanks to the placement of the sensor on the plate, the switching of the sensor It is provided to measure the average temperature of the elements. Control unit, when the switching elements get too hot, It prevents the switching elements from being damaged by cutting the current.

Switching of the control unit based on the temperature data transmitted from the sensor By controlling the power transmission to the elements, the induction heater cooker It is provided to work in safer conditions in terms of

In one embodiment of the invention, the switching elements are placed on the heat sink. is attached so that the plate contacts the switching elements. mounted on the elements.

In another embodiment of the invention, the plate makes contact of the sensor and the heat sink. are placed between them in such a way as to prevent them. Thus, the sensor's heat sink direct contact is avoided. In this way, the sensor Measuring the temperature of the heated plate due to the heat transmitted from its elements to the plate is provided.

In another embodiment of the invention, the plate will extend longitudinally over the heat spreader. is placed in a row. Thus, they are placed side by side on the heat diffuser. on the plate of the heat passing to the plate from the placed switching elements. homogeneously spread.

In another embodiment of the invention, the sensor (9) is located on both sides of the switching elements. It is placed in the middle of the plate so that it remains intact. In this way, switching It is ensured that the heat passing from the elements to the plate is better homogenized.

By placing the sensor almost in the center of the plate, the plate It is provided to measure the temperature effectively distributed over it.

In another embodiment of the invention, more than one fixing hole is provided on the plate. are available. Switching elements are placed between the heat sink and the plate. After positioning, they are attached to the heat distributor via a fixing element. attached to the plate. Fixing element, fixing hole and The switching element is passed through and fixed on the heat distributor.

Similarly, the sensor is positioned on the plate and a fastening element The aid is attached to the plate. The other end of the fastening element reaches its distributor.

In another embodiment of the invention, the plate is made of rectangular sheet metal material. is produced. Since the plate has a very short width compared to its length, the plate is flat. in the form of a stick.

In another embodiment of the invention, the plate is produced from aluminum. In this way The heat conduction ability of the plate is improved.

With this invention, the temperature of the switching elements depends on the switching elements. with an induction heater, where it is measured through the sensor on the plate placed furnace is carried out.

In order to achieve the aim of this invention, the induction heater hob is attached. shown in the figures and from these figures; Figure 1 - A schematic view of an induction heater stove.

Figure 2 - State of the art, heat sink, switching elements, sensor and is the perspective view of the plate.

Figure 3 - Perspective of a heat sink, fan, switching elements, sensor and plate is the view.

Figure 4 - Perspective of a heat sink, switching elements, sensor and plate is the view.

Figure 5 - Perspective view of a plate.

Figure 6 - Part of a heat sink, switching elements, sensor and plate perspective view.

Figure 7 - is the view of detail A in Figure 6.

The parts in the figures are numbered one by one and the corresponding numbers are given below.

Induction heater cooker induction coil top plate Electronic card (Circuit board) switching element 9. Sensor ., 100 Fixing hole 11., 111 Fastening element 12.K0ntr01 unit The hob with induction heater (1) is a top made of material such as glass or ceramic. plate (3) is placed under the upper plate (3), with the magnetic field it creates. a device that provides heating of the ferromagnetic cooking cabinet placed a large number of induction coils (2) to energize the induction coils (2) at least one electronic card (4), connected to the electronic card (4) and electrical current more than one switching element (5), A fan (6) located under the top plate (3) and the fan (6) distribute the air blown on it. at least one heat source providing cooling of the placed annularing elements (5) the distributor (7).

The switching elements (5) carry high-value electric current, overheated, preferably IGBT (Insulated Gate Bipolar Transistor) and diode bridge (diode bridge) are elements such as. Switching elements (5), fan (6) By placing it on the heat distributor (7) that distributes the cold air it blows, the switching Thanks to the heat transfer provided between the elements (5) and the heat distributor (7), a lot of overheating is prevented.

The induction heater hob (1), which is the subject of the invention, is also made of thermally conductive material, on the heat distributor (7) in contact with the switching elements (5). a plate (8) placed on the plate (8), the temperature of the plate (8) placed on the plate (8) at least one sensor (9) used to measure and temperature data transmitted from the sensor (9) a control that controls the energizing of the switching elements (5) as unit (12). The switching elements (5) are connected to both the heat sink (7) and the switching element (5), the heat sink (7) and the plate (8) Heat transfer occurs between them through conduction. Plate (8), the temperature of the plate (8) as it contacts each switching element (5) it is almost equal to the average temperature of the switching elements (5). Plate (8) the role of homogenizing the temperatures of the switching elements (5) undertakes. By placing the sensor (9) on the plate (8), the sensor (9) indicates the average temperature of the plate (8) and therefore of the switching elements (5). provides measurement. Control unit (12), temperature value transmitted from sensor (9) It controls the supply of current to the switching elements (5) depending on it.

The temperature value measured by the sensor (9) corresponds to the critical value determined by the manufacturer. by the control unit (12) over the switching elements (5). the current is cut off. Thus, overheating of the switching elements (5) safe working conditions are created for the user.

In one embodiment of the invention, the switching element (5), the heat sink (7) and the plate (8) It is attached to the heat distributor (7) in such a way that it remains between switching elements (5) contact both the heat distributor (7) and the plate (8).

Therefore, when current flows through one of the switching elements (5), it a heat transfer takes place between the switching element (5) and the plate (8).

Switching through the plate (8) by means of the sensor (9) on the plate (8) The temperature of the element (5) is measured.

In another embodiment of the invention, the plate (8) is placed between the sensor (9) and the heat distributor (7). is placed. Thanks to the plate (8), the sensor (9) is directly connected to the heat sink (7). contact is blocked. In this way, heat is transferred between the sensor (9) and the heat distributor (7). cold emitted from the heat sink (7) of the sensor (9), preventing the transfer of It is prevented from cooling by being affected by the air. Thus, the sensor (9) is directly the plate (8) that is heated due to the heat passing from the switching elements (5) to the plate (8) It is provided to measure the temperature.

In another embodiment of the invention, the plate (8) is placed longitudinally on the heat distributor (7). is placed. The switching elements (5) are placed side by side on the heat sink (7). Since it is placed sequentially, the plate (8) touches each switching element (5). It is placed longitudinally on the heat distributor (7) so that

In another embodiment of the invention, the sensor (9) is placed almost in the middle of the plate (8). is placed. Switching elements (5) on the sensor (9) plate (8) It is placed on both sides of the sensor (9). In this way, The heat emitted from the switching elements (5) is homogeneous on the plate (8). It is ensured that it is dispersed in the same way.

In another embodiment of the invention, the cooker (l) has more than one set on the plate (8). element (5) or the sensor (9) and fixed to the heat distributor (7). fastening the switching element (5) or the sensor (9) on the heat sink (7). It includes more than one fixing element (11, 111) that provides switching elements (5) are placed on the heat distributor (7), the fixing element (11), the plate (8) through the fixing hole (10) and over the switching element (5) It is fixed on the heat distributor (7) by passing it through. The sensor (9) is preferably ring or in the form of a half ring. Fixing hole (100) on the sensor (9) plate (8) by placing it on it, the fixing element (111) is passed over the sensor (9). It is fixed on the distributor (7). Thus, the mounting of the sensor (9) to the plate (8) is carried out.

In another embodiment of the invention, the plate (8) is made of rectangular sheet metal material. is produced.

In another embodiment of the invention, the plate (8) is made of aluminum material. is produced. Since aluminum is a material with a high heat transfer coefficient, The heat transfer from the switching elements (5) to the plate (8) is activated.

With this invention, heat transfer from the sensor (9), the heat sink (7) and the switching elements (5) by placing the switching elements (5) on a plate (8) provided It is provided to measure the average temperature. Thus, it is safer for the user Terms of use are created.

The invention is not limited to the above-described applications, but is provided to the person skilled in the art. can easily demonstrate different applications of the invention. These are the requests should be evaluated within the scope of the protection claimed by

Claims (7)

REQUESTS An upper plate (3), which is made of material such as glass or ceramic and functions as a tray, multiple induction coils (2) placed under the top plate (3), which provide heating of the ferromagnetic cooking cabinet placed on it with the magnetic field it creates, and induction coils ( 2) at least one electronic card (4) that ensures its energizing, more than one switching element (5) connected to the electronic card (4) and carrying electric current, heated by the effect of the current it carries, a fan located under the top plate (3) (6 ), at least one heat distributor (7) that provides cooling of the switching elements (5) placed on it by distributing the air blown by the fan (6), the switching element (5) attached to the inside of the heat distributor (7), and at least one sensor (9) used to measure the temperature. ) heat dissipation material produced from 0 thermal conductive materials, containing a control unit (12) that controls the energizing of the switching elements (5) depending on the transmitted temperature data. A plate 0 placed in contact with the switching elements (5) between the inside (7) and the plate (8) has at least one sensor (9) placed on the plate (8) and used to measure the temperature of the plate (8) and transmit data to the control unit (12). ) with an induction heater (1). Characterized by the plate (8) placed between the sensor (9) and the heat distributor (7). Cooker (1) as in claim 1. The cooker (1) as in any one of the preceding claims. A cooker (1) as in any one of the above claims, characterized by the sensor (9) placed almost in the middle of the plate (8). 5. More than one fixing hole (10, 100) on the plate (8), one end of it is passed through the fixing hole (10, 100) and the switching element (5) or the sensor (9) is fixed to the heat distributor (7) and the switching element ( A cooker (1) as in any one of the above claims, characterized by more than one fixing element (11, 111) that enables the sensor (9) or the sensor (9) to be attached to the heat distributor (7). 6. Cooker (1) as in any one of the above claims, characterized by the plate (8) produced from sheet metal material in rectangular form. 7. Cooker (1) as in any one of the above claims, characterized by the plate (8) produced from aluminum material.