JPH02178520A - Composite appliance of cooking by heating - Google Patents

Abstract

PURPOSE:To make it possible to carry out correct humidity detection according to the conditions of cooking by stopping for a certain time the fan of a hot air circulation device in the process of operation mode of cooking which utilizes hot air and, during the time of the fan stopping, conducting humidity detection with a sensor. CONSTITUTION:A heater 7 keeps on conducting for a while after cooking is started, and the heater is operated intermittently when the temperature in a cooking chamber reaches a set temperature and temperature sensor works. A hot air circulation fan 8 works for 10 minutes after the cooking is started and then it stops for 11 minutes and it works again until the cooking ends. The electric wave is ON while the heater is OFF as soon as the heater starts the intermittent operation by the temperature sensor. The humidity detection is started 18 minutes after the cooking is started, and it is just during the hot air fan is OFF and the detection is finished while the fan is OFF. A humidity sensor 15 is provided in the exhaust channel for discharging the steam in the heating chamber. It detects the quantity of steam generated from foods and sends signal to microcomputer in order to conduct automatic cooking.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combined heating cooker equipped with both radio waves and hot air circulation.

Conventional technology When adding an automatic cooking function to a conventional microwave oven or a combined heating cooker equipped with both radio waves and a heater, a humidity sensor is installed in the exhaust passage for discharging steam from the heating chamber. It detected the steam coming out and started cooking automatically.

Problem to be Solved by the Invention However, when trying to detect humidity using a humidity sensor during heating using the hot air circulation method, since hot air is constantly circulating in the heating chamber, the amount of steam flowing to the sensor part is small, making it unstable. Therefore, it was not possible to accurately detect humidity according to the progress of cooking, and therefore automatic cooking in the hot air circulation operation mode was difficult.

Means for Solving the Problems In order to achieve the above objects, the present invention provides a heating chamber, a high frequency oscillator that supplies high frequency waves to the heating chamber, a hot air circulation device that supplies hot air to the heating chamber, and a heating chamber that supplies hot air to the heating chamber. The device is equipped with a sensor to detect steam generated from the food being cooked, and a control device to control the operation of the entire cooking device. Stop the device fan,
During this time, a sensor is used to detect vapor.

By stopping only the fan of the hot air circulation device for a certain period of time before the humidity is detected by the humidity sensor, the steam generated from the food during this period can be smoothly flowed into the exhaust passage where the humidity sensor is installed. It is possible to detect the correct humidity according to the cooking situation. Also, during this time, only the fan is stopped and the heater is energized, so the temperature inside the refrigerator will not drop suddenly, and on the contrary, the temperature inside the refrigerator, which was uneven, will be equalized during this period. .

EXAMPLE Hereinafter, a composite heating cooker according to an example of the present invention will be described with reference to the drawings.

In FIG. 1, a heater 7, a hot air circulation fan 8, and a motor 9 are provided in the upper part of the heating chamber 2. The hot air generated by these is blown into the heating chamber from an air outlet 10 provided on the upper wall of the heating chamber. Reference numeral 3 denotes a high-frequency oscillator, and the radio waves oscillated by the high-frequency oscillator are radiated into the heating chamber from the power supply port 18. Reference numeral 4 denotes a turntable on which food to be heated is placed, and is rotationally driven by a motor 14. Therefore, food placed on the turntable can be heated and cooked simultaneously by both radio waves and hot air. Reference numeral 15 is a humidity sensor installed in the exhaust passage for exhausting the steam in the heating chamber, which detects the amount of steam generated from the food and sends a signal to a microcombiner (not shown) for automatic cooking. .

Reference numeral 16 denotes a cooling fan, and the cooling air generated by this fan enters the heating chamber after cooling the electrical components, and exhausts the steam in the heating chamber.

FIG. 2 shows the control status of each component that changes as the cooking time progresses. The heater is continuously energized for a while after the start of cooking, but when the internal temperature reaches the set temperature, a temperature sensor (not shown) is activated and the heater repeats intermittent operation. The hot air circulation fan operates for 10 minutes after the start of cooking, stops for 11 minutes, and operates again until the end of cooking. The radio waves are turned on during the heater's OFF time at the same time as the heater starts to be interrupted by the temperature sensor. Humidity detection starts 18 minutes after the start of cooking, just while the hot air circulation fan is off, and ends while the fan is off.

Effects of the Invention During the cooking mode using hot air circulation, the humidity sensor detects humidity only after a certain period of time has passed after the start of cooking, and only the fan of the hot air circulation device is stopped for a certain period of time from before the humidity detection. Steam generated from food can flow smoothly into the exhaust passage where the humidity sensor is installed. This makes it possible to accurately detect humidity according to the cooking status of the food. Also, during this time, only the fan is stopped and the heater is energized, so the temperature inside the refrigerator will not drop suddenly, and on the contrary, the temperature inside the refrigerator, which was uneven, will be equalized during this period. .

As described above, with the simple configuration, automatic cooking using a humidity sensor in hot air circulation cooking mode, which has been difficult in the past, can be performed.

[Brief explanation of the drawing]

2... Heating chamber, 7... Heater, 8.
... Hot air circulation fan, 3 ... High frequency oscillator, 15 ... Humidity sensor Name of agent Patent attorney Shigetaka Awano and one other person 2-m- 仝 --- 8-- - -m- ts - Heating room high frequency generator 5 Turntable heater hot air nW4 Fan motor 9- Outlet Turntail motor humidity sensor '7- 9 Mark Fan Diagram■ Figure procedure correction (, 5e. 1. Indication of the case 1986 Patent Application No. 334430 2. Name of the invention Relationship with the case of the person who amended the combined heating cooker Patent application Address: 1006 Kadoma, Kadoma City, Osaka Prefecture Name: (582) Representative of Matsushita Electric Industrial Co., Ltd.
Akio Tanii

Claims (1)

[Claims] a heating chamber; a high-frequency oscillator that supplies high frequency waves to the heating chamber; a hot air circulation device that supplies hot air to the heating chamber; a sensor for detecting steam generated from food cooked in the heating chamber; It is equipped with a control device to control the operation of the entire cooking device, and when in the operation mode of cooking using hot air, the fan of the hot air circulation device is stopped for a certain period of time during cooking, and during that time, a sensor is used to
A composite heating cooker configured to detect steam.