Humidity sensing arrangement for microwave oven with vented fume hood

Abstract

The present invention discloses a humidity preception device of microwaven oven with a ventilation cover. Said invention includes: upper cavity of heating chamber, exhaust motor component placed in the rear portion of upper cavity of heating chamber, exhaust hole palced near by exhaust motor component and communicated with the heating chamber, air inlet placed in the front of upper cavity of heating chamber and communicated with heating chamber and humidity sensor placed near by exhaust hole and used for determining humidity of exhausted air. In the described upper cavity of heating chamber an air channel for guiding air flow is set, and the humidity sensor Sb is placed on the air channel correspondent to upper portion of exhaust hole.

Description

technical field [0001] The invention relates to a microwave oven with a ventilation hood, in particular to a humidity sensing device for the microwave oven with a ventilation hood. Background technique [0002] A microwave oven with a ventilated hood is hereinafter referred to as a microwave oven. In addition to using microwaves to heat food, it can also discharge the smoke generated by the oven at the bottom of the microwave oven. [0003] like figure 1 As shown, the existing microwave oven with a ventilation hood generally includes: a heating chamber 10 for heating food and an electric control chamber 20 arranged on the side of the heating chamber 10 . The electric control room 20 is provided with electrical components for emitting microwaves to the heating chamber 10 , such as a magnetron 22 for generating microwaves and a step-up transformer 24 for inputting power signals to the magnetron 22 . [0004] In order to dissipate heat from the magnetron 22 and the step-up tr...

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Problems solved by technology

[0007] The disadvantage of the above-mentioned humidity sensing device for a microwave oven with a ventilation hood is that the air flow discharged through the exhaust port 10b is driven by the fan 26, so in order to measure the humidity of the air inside the heating chamber 10, the fan 26 is Indispensable components that cannot be omitted

[0008] In addition, in the inside of the heating chamber 10, although the air enters the heating chamber through the air inlet 10a, if the heating chamber 10 has other gaps, it is impossible for all the water vapor in the heating chamber to pass through the exhaust port. discharge, so the humidity sensor Sa measures the humidity inaccurately

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