JPS629444Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a composite cooking device that detects the temperature of heated food using an infrared sensor.

Conventionally, gas sensors, humidity sensors, infrared sensors, etc. have been used as temperature detectors for heated food in microwave ovens.On the other hand, in electromagnetic cookers, a thermistor is placed closely on the underside of the top plate on which the pot, etc. is placed. It was set up. In the case of this induction cooker, instead of directly measuring the temperature of the pot, the temperature of the bottom surface of the top plate is indirectly measured by the solid contact of the thermistor.
Accurately measuring temperature has been difficult due to the dielectric field created by the work coil.

In addition, if the temperature of the microwave oven and the induction cooker were measured separately and the temperature was controlled, the control circuit would not only be complicated but also mechanically difficult to simplify. There has been a desire for a simple temperature detector and its mechanism to reduce costs.

The present invention has been developed in view of the above points, and uses one infrared sensor as a temperature detector, and uses a switching reflector to switch between a microwave oven and an electromagnetic cooker to determine the temperature of each heated food. It is intended to measure the

In order to achieve the above-mentioned object, the present invention divides the infrared rays generated from the food in the heating chamber of the microwave oven and the infrared rays generated on the bottom surface of the top plate of the electromagnetic cooker using a switching reflector. It is characterized by being guided by an infrared sensor.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a schematic front view of a composite cooking device showing an embodiment of the present invention, and the operation panel, microwave door, etc. are omitted. FIG. 2 is an enlarged view of the main part of FIG. 1.

In the figure, 1 has a heating chamber 3 for a microwave oven 2 inside, and a work coil 4 is provided above the heating chamber 3.
This is a composite cooking device main body which is equipped with an electromagnetic cooking device 7 in which a pot 6 is placed on a top plate 5. 8 is an opening formed in the ceiling surface 3' of the heating chamber 3, and the infrared sensor case 10 in which the infrared sensor 9 is disposed is communicated with the heating chamber 3 through this opening 8. On the other hand, infrared rays generated from the lower surface of the top plate 5 are introduced through a duct 11 communicating with the infrared sensor case 10. 12 is a switching reflector installed near the entrance of the infrared sensor case 10, and in FIG. It is bent by about 90 degrees by the plate 12 and introduced into the infrared sensor case 10. Reference numeral 13 denotes a knob attached to the center of the switching reflector 12, which can be operated by the user from the outside. Figures 1 and 2 above
In the figure, when the electromagnetic cooker 7 is used, hot air introduced from the duct 11 as temperature information of heated food is bent by approximately 90 degrees by the switching reflector 12 and guided to the infrared sensor case 10. .
Therefore, by further rotating the switching reflector 12 by 90 degrees using the knob 13, the electromagnetic cooker 7
This switching reflector plate 12 can guide only the hot air from the heating chamber 3 of the microwave oven 2 to the infrared sensor case 10.

By measuring the temperature by switching between the microwave oven and the electromagnetic cooker in this way, only one infrared sensor is required, which is economical.

Note that it is desirable that the inside of the infrared sensor case 10 be made black and kept in a sealed state to prevent other infrared rays from entering. 15 is a temperature control circuit that generates a signal for controlling the operation of the microwave oven 2 or the electromagnetic cooker 7 based on the temperature signal detected by the infrared sensor 9;
A chopper 6 is placed in front of the infrared sensor 9, and improves accuracy by chopping the infrared rays incident on the infrared sensor case.

As explained above, the present invention provides a combination cooker equipped with a microwave oven and an electromagnetic cooker, in which infrared rays generated from food in the heating chamber of the microwave oven and the lower surface of the top plate of the electromagnetic cooker are It has a switching reflector that divides and guides the generated infrared rays to a temperature detector consisting of one infrared sensor, so it has high practical value as it can detect the heating temperature of both cooking appliances with an extremely simple structure. It is something.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a composite cooking device showing an embodiment of the present invention, and FIG. 2 is an enlarged view of the main parts of FIG. 1... Composite cooker body, 2... Microwave oven, 3... Heating chamber, 5... Top plate, 7... Electromagnetic cooker, 9
...Infrared sensor, 10...Infrared sensor case, 12...Switching reflector, 13...Knob.

Claims (1)

[Scope of utility model registration request] In a combination cooker equipped with a microwave oven and an electromagnetic cooker, a single infrared sensor detects infrared rays generated from the food in the heating chamber of the microwave oven and infrared rays generated on the lower surface of the top plate of the electromagnetic cooker. What is claimed is: 1. A composite cooking device characterized by being provided with a switching reflector plate that separates and guides the temperature detector.