Electromagentic furnace provided with magnetic induction temperature measuring equipment

Abstract

The invention discloses an induction cooker provided with a magnetic induction temperature measuring device, comprising an induction cooker shell, an induction cooker bedplate, a heating coil and a control circuit. The induction cooker is characterized in that a position where a lower side of the induction cooker bedplate is adjacent to the heating coil is also provided with a temperature measuring induction coil which is used for converting a magnetic signal generated by a magnetic temperature induction element which is arranged on the induction cooker bedplate at a set temperature point into an electric signal to output, the induction cooker control circuit is also provided with a temperature measuring circuit which is mainly formed by a temperature measuring induction coil and an electric signal discriminating circuit, wherein the temperature measuring induction coil is connected with the electric signal discriminating circuit, and the electric signal discriminating circuit is again connected with an output control circuit so that a control program of the induction cooker can change correspondingly. The temperature of an electromagnetic pot is detected by adopting non-contact way, thereby realizing automatic, flexible and correct control of multipoint temperature of the induction cooker in the process of cooking.

Description

technical field [0001] The invention relates to an electromagnetic cooker, in particular to an electromagnetic cooker provided with a magnetic induction temperature measuring device. Background technique [0002] An induction cooker is a household appliance that uses an electromagnetic field to directly heat an electromagnetic cooker made of ferromagnetic materials as a load for cooking. In the prior art, the temperature control process of the induction cooker includes a contact temperature detection method and a non-contact temperature detection method. Among them, the contact temperature detection method uses the temperature at the bottom of the electromagnetic cooker to conduct temperature control to the heat-sensitive element through the platen of the induction cooker. It is difficult to ensure accurate and timely transmission to the thermal element, especially at a specific temperature point, the thermal element can not get the signal accurately and timely, and it is d...

AI Technical Summary

Problems solved by technology

Among them, the contact temperature detection method uses the temperature at the bottom of the electromagnetic cooker to conduct temperature control to the heat-sensitive element through the platen of the induction cooker. It is difficult to ensure accurate and timely transmission to the heat-sensitive element, especially at a specific temperature point, the heat-sensitive element cannot get the signal accurately and timely, and it is difficult to realize the accurate and automatic control of the temperature of the induction cooker during the cooking process

Therefore, this technical solution has the following defects: (1) in order to ensure the normal detection of the magnetic sensor, the power supply of the heating coil must be often disconnected, which is not conducive to the normal heating work of the induction cooker; (2) the heating coil is set to be disconnected for the first time during the heating process The time of the power supply will vary depending on the amount of food to be heated. Therefore, it is difficult to set a more suitable time point for all situations. For the case where the power-off time point is set early, the number of power-off times will increase and the detection time will increase. If it is too long, it will affect the heating efficiency; (3) The frequent switching action of the high-power tube or power module of the induction cooker will impact the control system, which will affect the service life of the control system; (4) It is difficult to detect multiple temperature points: Because different cooking procedures require different temperature points to be controlled, that is, not all cooking procedures require reaching the Curie point to work, and this detection method can only detect the Curie point temperature of the temperature-sensing magnetic steel, but cannot detect multiple points. Therefore, it is impossible to flexibly and accurately control the multi-point temperature required in the cooking process of the induction cooker, and the temperature detection is still limited

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