Induction heating cooker
An induction heating and cooker technology, applied in induction heating, induction heating devices, electric/magnetic/electromagnetic heating, etc., can solve the problems of reduced temperature detection accuracy, larger occupied space, heating of waveguide 36, etc., and achieve red heat ・The effect that the possibility of deformation is low
Active Publication Date: 2011-09-21
PANASONIC CORP
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Problems solved by technology
However, when the infrared sensor 35, the waveguide 36, and the second antimagnetic portion 40 are provided in the middle of the winding portion of the heating coil 33, the space occupied by these structural components will become larger.
Therefore, it is difficult to achieve both reducing the influence on the shape of the heating coil 33 and installing it near a part with a higher temperature than the pot 31.
When removing the second magnetic shielding portion 40 in order to reduce the occupied space of structural components such as the infrared sensor 35, as mentioned above, the waveguide 36 may generate heat, which may be affected by the infrared radiation from the waveguide 36. Temperature detection accuracy will be reduced
Method used
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[0064] figure 1 It is a schematic diagram showing the structure of the induction heating cooker 10 according to the embodiment of the present invention. In addition, figure 2 It is a plan view showing the configuration near the heating coil 13 of the induction heating cooker 10 according to the embodiment of the present invention, and a schematic diagram showing an example of the temperature distribution of the pan bottom.
[0065] Such as figure 1 As shown, the induction heating cooker 10 includes a top plate 12 on which a load pot 11 (hereinafter simply referred to as a pot) is placed, and a heating coil 13 arranged under the top plate 12 to heat the pot 11 . The heating coil 13 has a structure in which the inner coil 13a and the outer coil 13b are wound separately.
[0066] The heating coil 13 is supported by a heating coil support stand 15 made of, for example, a black heat-resistant resin material with low infrared transmittance. The heating coil support stand 15 ha...
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An induction heating cooker includes a top plate where a pan is placed; a heating coil for induction heating the pan; an inverter circuit for supplying a high frequency current to the heating coil; an infrared sensor, which is arranged under the heating coil and detects an infrared light radiated from the pan; a light guiding part including an upper opening formed at an upper end facing the top plate and a lower opening formed at a lower end, and guiding the infrared light from the pan to the infrared sensor; and a control unit for controlling an output of the inverter circuit according to anoutput from the infrared sensor; wherein the light guiding part includes a nonmetallic material part in which the upper opening is formed upper than a lower surface of the heating coil.
Description
technical field [0001] The present invention relates to an induction heating cooker using an infrared sensor. Background technique [0002] First, a conventional induction heating cooker will be described. image 3 It is a schematic diagram which shows the structure of the conventional induction heating cooker 100. [0003] Such as image 3 As shown, the induction heating cooker 100 includes a top plate 32 holding a pot 31 and a heating coil 33 for heating the pot 31 under the top plate 32 . [0004] In addition, an infrared sensor 35 is arranged at the central part of the heating coil 33. Based on the output from the infrared sensor 35, the temperature calculating part 37 calculates the temperature of the bottom of the pan, and the control part 38 controls the temperature with the temperature calculated by the temperature calculating part 37. The output of the conversion circuit 34 connected to the heating coil 33 . [0005] In addition, a waveguide 36 is arranged above t...
Claims
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IPC IPC(8): H05B6/12
CPCH05B2213/07H05B6/062
Inventor 富永博渡边贤治大桥正治野口新太郎藤涛知也
Owner PANASONIC CORP