JPS6363818B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite cooking device that integrates a gas oven using gas as a heat source and a microwave oven having a high frequency oscillator.

In conventional combination cookers, the humidity sensor that enables automatic cooking in the microwave oven is installed in the exhaust gas passage of the combustion chamber, just like the temperature sensor for gas ovens, so the temperature of the exhaust gas during gas combustion is approximately 300
The humidity sensor was exposed to temperatures that would destroy it.

Therefore, the present invention solves the above-mentioned conventional drawbacks by stopping the flow of waste air in the waste air passage where the humidity sensor is placed during gas-fired baking, and in the case of automatic cooking in a microwave oven, the flow of waste air is stopped. By providing a flow of exhaust air, the purpose is to enable humidity detection and protect the humidity sensor from the high temperatures encountered in gas ovens.

In order to achieve the above object, the combined cooking device of the present invention communicates a sub-exhaust passage provided with a humidity sensor, etc. with a main exhaust passage communicating with the fan chamber of the hot air circulation fan, so that the blowing pressure of the fan is controlled by the sub-exhaust passage. The configuration is designed to span the exhaust air passage, and the exhaust air from the sub-exhaust air passage and the blowing pressure are balanced, and the atmospheric flow around the humidity sensor is in a state where there is almost no flow, which prevents the humidity sensor from becoming too hot, and at the same time prevents corrosion. can be prevented.

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, a humidity sensor 2 that detects and transmits a predetermined amount of change in relative humidity in the heating chamber 1 during microwave heating is placed in the sub-exhaust passage 4 in the same way as the temperature sensor 2. . The main exhaust gas passage A5 communicates with the upper part of the fan chamber 7 that houses the hot air circulation fan 6. The auxiliary exhaust passage 4 is the main exhaust passage A5.
to join. Moreover, another main exhaust gas passage B8 communicating with the heating chamber is provided. Hot air in the heating chamber 1 is absorbed into the hot air circulation fan 6 from the suction path 10 and flows into the room from the blowout path 9.

First, during gas combustion, hot air combusted in the combustion chamber 12 from the burner 11 is sent to the heating chamber 1 from the blowout passage 10 by the rotation of the circulation fan 6 . Circulation is repeated again by the circulation fan 6 from the heating chamber 1 via the combustion chamber 12, but some of the exhaust gas is passed through the main exhaust gas passage B.
8, joins with the exhaust gas in the main exhaust gas passage A5 of the circulation fan motor at the exhaust port 13, and is discharged to the outside. The exhaust gas entering through the aperture 14 with a diameter that prevents radio wave leakage attempts to enter the sensor 2 via the auxiliary exhaust gas passage 4 due to the force of the circulation fan 6, but due to the heating By balancing with the exhaust air from the chamber 1, the air around the sensor 2 will not move.

Next, the case of automatic cooking using a microwave oven will be explained. When using a microwave oven, the circulation fan 6 does not rotate, so the waste air containing humidity in the heating chamber 1 is
Exhaust air flows from the opening 14 through the vicinity of the sensor 2, through the sub exhaust passage 4, through the fan chamber 7 in an L-shape, through the main exhaust passage A5, and into the main exhaust passage B8. The air and exhaust gas are combined at the exhaust air port 13 and exhausted.

As described above, the present invention provides the following effects.

(1) Protect the humidity sensor from various gases in the exhaust gas and prevent sensor corrosion and solder melting.

(2) During gas combustion, waste gas does not flow around the humidity sensor, or even if it flows, it is only a small amount, so the temperature does not rise, so the above effect of 1 and cooling are facilitated.

(3) Since there is no gas waste air, there is no oil smoke even when grilling fish or poultry, so the sensor does not get dirty, so the sensor sensing ability and sensor life can be extended.

(4) All three exhaust gas passages, the main exhaust passage B8, the main exhaust passage A5 from the circulation fan, and the auxiliary exhaust passage from the combustion chamber, merge into one exhaust port, so the flow rate of each By limiting the heat efficiency, thermal efficiency can be increased.

(5) Additionally, one exhaust port simplifies the structure of the device.

(6) The internal pressure of the combustion chamber can be lowered by the forced exhaust effect of the main exhaust passage, increasing combustion efficiency.

(7) It is normal for the circulation fan to stop the flow of waste air in the auxiliary exhaust air passage, but in the unlikely event that the balance is lost and the exhaust air flows into the auxiliary exhaust air passage and becomes hot, Since the temperature sensor can detect the temperature quickly, combustion can be stopped and the humidity sensor can be prevented from being destroyed.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a composite cooking device according to an embodiment of the present invention, Fig. 2 is a partially cutaway plan view of the auxiliary exhaust gas passage of the same, and Fig. 3 is a side sectional view of the same. be. 1... Heating chamber, 2... Humidity sensor, 3... Temperature sensor, 4... Sub-exhaust air passage, 5, 8... Main exhaust air passage, 6...
Hot air circulation fan, 11...gas burner.

Claims (1)

[Claims] 1 A heating chamber that stores an object to be heated, a high-frequency oscillator that supplies high frequency power to the heating chamber, a gas combustion device that heats the heating chamber, a fan that circulates air within the heating chamber, and communicates with the heating chamber. a main exhaust gas passage communicating with a fan chamber housing the fan; a humidity sensor and a temperature sensor are provided in the secondary exhaust passage; A composite cooker that communicates with