JPH0225629A - Cooking heater - Google Patents

Abstract

PURPOSE:To simplify the constitution and attempt to reduce the cost by using the same motor for mixing the flour to make bread and for rotating food during high-frequency heating and providing the motor in the lower section of a heating chamber. CONSTITUTION:A heating chamber 2 is provided for heating food in a main body and heaters 3 and 4 are provided on the upper and lower outer side wall faces of the heating chamber 2. And, a magnetron 5 is provided in the main body 1 so as to make it possible to perform high-frequency heating in the heating chamber 2. A bread case 6 to receive flour is provided and below the bread case 6 stirring vanes 7 are provided for mixing the flour. The rotating shaft of the stirring vanes 7 is connected to the rotating shaft of the motor 8 by a connecting device 14. A coil spring 21 is provided at the upper section of the connecting device 14 to push a pressure sensor 20 with a fixed force. With this arrangement it is possible to judge if the rotation of the motor 8 is for mixing the flour or for rotating foods so that it is possible to change the rotation of the motor 8 automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heating cooker which has an additional function of automatically baking bread by kneading flour by installing stirring blades in a heating chamber.

BACKGROUND OF THE INVENTION Conventionally, there have been cooking appliances that have high-frequency heating and heater heating, are equipped with stirring blades for kneading flour, and have an additional function of automatically baking bread.

FIG. 3 is a sectional view of a conventional example.

In FIG. 3, a heating chamber 2 for heating food is provided in the main body 1, and heaters 3 and 4 are provided on the upper and lower outer walls of the heating chamber 2.

Furthermore, a magnetron 6 is provided within the main body 1 so that high frequency heating can be performed within the heating chamber 2.

Inside the heating chamber 2, a pante 76 for storing flour is provided, and at the bottom of the bread case 6 there is a stirring blade 7 for kneading the wheat flour.
is provided. The rotation of the stirring blade 7 is transmitted from a pulley 9 of a motor 8 to a pulley 11 provided below the stirring blade 7 via a belt 10.

On the other hand, during high-frequency heating, in order to prevent uneven heating, it is necessary to provide means for placing a food item on the bottom of the heating chamber 2 and rotating it. During high-frequency heating, the rotation of food is very slow, which is significantly different from the rotation speed at which flour is kneaded.

Therefore, the rotating shaft 13 of the motor 12 for rotating the food product was provided on l111 of the rotating shafts of the stirring blade 7.

Problem to be Solved by the Invention 17 However, in the above-mentioned configuration, each of the same i.
It requires a motor, and also requires belts and pulleys, making the configuration complicated and very expensive.

Means to solve the problem By making the motor that kneads the flour used to make bread the same as the motor that rotates the food during high-frequency heating and placing it at the bottom of the heating chamber, the configuration can be significantly simplified and costs can be reduced. can be reduced.

In order to change the rotational speed of the motor, an inverter circuit (not shown), which has been commonly used in the past, is used to change the frequency of the alternating current input to the motor.
We can respond to your specifications.

Example This will be explained with reference to FIG.

FIG. 1 is a sectional view of an embodiment of the present invention. In FIG. 1, a heating chamber 2 for heating food is not provided in the main body 1, and heaters 3 and 4 are provided on the upper and lower outer walls of the heating chamber 2.

In addition, the main body 1 is designed so that high frequency heating can be performed in the heating chamber 2.
A magnet 117 is provided inside.

A bread case 6 for storing flour is provided in the heating chamber 2, and a stirring blade 7 for kneading the flour is provided at the bottom of the bread case 6. The rotation axis of the stirring blade 7 is the moku 8
It is connected to the rotation shaft 11 by a coupling machine 14. 15
is the electrical component that operates the magnetron 5.

FIG. 2 is a sectional view of the main part of the bottom part of the heating chamber 2 in FIG. 1. The rotating shaft 16 of the stirring blade is supported by a thrust bearing 17. On the other hand, the rotating shaft B18 of the motor 8 and the rotating shaft 16 are made to coincide with each other, and the rotating force is transmitted by the coupling device 14. Further, at the lower end of the rotating shaft B1s, a leaf spring 19 supporting the rotating shaft B,
A pressure sensor 20 is installed.

A fill spring 21 is provided at the top of the coupling machine 14, so that by pressing the pressure sensor 20 with a constant force, it is possible to determine whether the rotation of the motor 8 is to knead flour or to rotate food. Therefore, the number of oral transmissions of the motor 8 can be changed automatically.

The motor 8 is a synchronous motor in order to keep the rotation speed constant even if the load fluctuates.

Effect of the invention With the above configuration, the present invention has the following effects.

(1) Since the motor that kneads the flour and the motor that rotates the food can be rotated by the same motor, pulleys and belts can be eliminated, the configuration can be simplified, and costs can be significantly reduced.

(2) A pressure sensor installed under the motor can automatically determine whether the rotation speed is for kneading flour or rotating food, so the motor rotation speed is automatically changed.

(3) Since the motor uses a synchronous motor, the rotation speed does not change even if the load changes.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention, FIG. 2 is a sectional view of the same essential part, and FIG. 3 is a sectional view of a conventional example. 6...Bread case, 7...Stir, 8
・・・・・・Motor, 20・・・・・・Name of pressure sensor agent Patent attorney Shigetaka Awano and 1 other person Fig.

Claims (3)

[Claims] (1) A heating chamber for heating the object to be heated, a heater for raising the temperature of the heating chamber, a case for kneading the food in the heating chamber, and a stirring device for kneading the food at the bottom of the case. A blade, a stirring shaft connected to the stirring blade, and a motor for rotating the stirring blade, the motor being provided approximately below the center of the heating chamber, and the rotation shaft of the motor and the rotation of the stirring blade. A heating cooker characterized by having the shafts coincide with each other. (2) The heating cooker according to claim 1, wherein a high frequency oscillator is provided in the main body, the motor is constituted by a synchronous motor, and the input frequency of the motor is changed to change the rotation speed of the motor. (3) A pressure sensor is installed below the rotation axis of the motor,
The cooking device according to claim 2, wherein the input frequency of the motor is changed depending on the signal from the pressure sensor.