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High-frequency heating apparatus with electrothermic heating device

A high-frequency heating device, heating device technology, applied in the direction of electric heating device, electric heating fuel, electric/magnetic/electromagnetic heating, etc., can solve the problem of shortened component life

Inactive Publication Date: 2011-04-20
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when there is a problem with the temperature control device 59, there is a problem of shortening the life of the parts, and it is impossible to prevent the so-called "slight abnormal temperature state" of the temperature rise of the product casing.

Method used

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  • High-frequency heating apparatus with electrothermic heating device
  • High-frequency heating apparatus with electrothermic heating device
  • High-frequency heating apparatus with electrothermic heating device

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Experimental program
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Embodiment approach

[0032] figure 1 It is a plan view of a high-frequency heating device with an electrothermal heating device according to an embodiment of the present invention. The object to be heated 14 housed in the heating chamber 1 is heated by the high-frequency generator 2 and the electrothermal heating device 3 . The heat generated by the heater 4 is changed into hot air by the circulating fan 5 and circulates between the electrothermal heating device 3 and the heating chamber 1 . Circulation fan 5 is connected with circulation fan belt pulley 6, driven by belt 7 and circulation fan motor 8 to rotate.

[0033] The temperature of the heating chamber 1 is measured by a thermistor 12 . And the temperature data of the heating chamber 1 is transmitted to the first-level temperature control switch (overheat prevention device) 9 and the second-level temperature control switch (overtemperature prevention device) 11 . The first-stage temperature control switch 9 and the second-stage temperat...

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Abstract

Disclosed is a high-frequency heating apparatus with electrothermic heating device, comprising a heating chamber which houses an object to be heated therein, a high-frequency generating device and electrothermic heating device for heating the object to be heated, and two overheat prevention devices arranged in the electrothermic heating device. The two overheat prevention devices include a resettable first stage overheat prevention device and a non-resettable second stage overheat prevention device, wherein the operating temperature of the second stage overheat prevention device is set higher than the operating temperature of the first stage temperature overheat prevention device.

Description

technical field [0001] The invention relates to the problem of ensuring safety during electric heating in a high-frequency heating device with an electric heating device for heating food. Background technique [0002] In the existing high-frequency heating device with an electric heating device of this type, a non-resetting type overtemperature preventing device is arranged on the electric heating device. When problems such as a short circuit of the heater relay occur and the heater is in a continuous energized state, the overheating prevention device works to prevent fire and electric shock. [0003] Figure 4 It is a plan view of a conventional high-frequency heating device with an electrothermal heating device. The electrothermal heating device 53 is installed above the heating chamber 51 . And the electrothermal heating device 53 supplies hot air to the heating chamber 51 . The thermistor 62 and the overheat preventing device 59 are installed on the electric heating d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C7/02F24C7/04
CPCH05B6/666
Inventor 福井干男西谷久弘瀬森义雄
Owner PANASONIC CORP
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