JPH02208419A - Microwave oven with bread baking function - Google Patents

Abstract

PURPOSE:To heat a bread vessel uniformly by hot air, and to bake bread uniformly by transmitting the running of a driving motor to a kneading member during the kneading of dough and to the bread vessel during the baking of the bread. CONSTITUTION:A microwave oven with bread baking function is provided with a magnetron 6, an electric heater 9, a cooling fan 7 and a driving motor 25 between an outer case 2 and an inner case 3. When bread is baked, a kneading shaft 19 is journalled pivotably in the base 18 of a bread vessel 17, and a kneading member 21 is attached detachably to the kneading shaft 19. The running of the driving motor 25 turns a turn table 11 through a belt 29, a driving shaft 28 and a gear train 30. On the other hand, the turning of the driving shaft 20 turns the kneading member 21 via an intermediate shaft 15 by means of one-direction clutch 32, and the difference of the turning speed between the turn table 11 and the kneading member 21 enables dough to be kneaded. When bread is baked, the one-direction clutch 32 becomes inoperative, and the turn table 11 alone turns so as to turn the bread vessel 17. Therefore, dough is baked uniformly by hot air blown from the rear surface of the inner case 3.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention provides a bread container that is disposed in a heating chamber, and is capable of carrying out everything from mixing dough to baking in this bread container. This invention relates to a microwave oven with a bread making function.

(Prior Art) In a conventional microwave oven of this type, a bread container is fixedly disposed within a heating chamber, and when kneading bread dough, a kneading member disposed inside the bread container is rotated by a drive motor. During baking after fermentation, the electric heater placed at the rear of the heating chamber is energized, and the high-temperature air is sent into the heating chamber by a convection fan, creating a high-temperature atmosphere inside the heating chamber as bread. I try to bake it.

(Problem to be Solved by the Invention) However, in the above configuration, since the bread container is fixedly disposed within the heating chamber, when baking the bread,
The heating temperature on the back side of the bread container, which is directly exposed to the hot air blown in from the back, and the front side, which is not directly exposed to such hot air, becomes significantly different, resulting in uneven baking of the bread. There was a problem.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a microwave oven with a bread-making function that can uniformly bake bread.

[Structure of the Invention (Means for Solving the Problems)] In order to achieve the above object, the microwave oven with a bread making function of the present invention controls the rotation of the drive motor by rotating the drive motor provided in the bread container when the bread dough is mixed. A drive mechanism is provided that transmits the signal to the cross-wire member and to the bread container when baking the dough.

(Function) According to the above means, when baking bread, the bread container is rotated, so the hot air sent into the heating chamber is blown against the entire circumference of the bread container, and the bread container is uniformly distributed throughout. The bread is heated evenly and can be baked evenly.

(Example) An embodiment of the present invention will be described below based on the drawings.

First, the overall structure of the microwave oven is as shown in Fig. 4.The main body 1 is composed of an outer box 2 and an inner box 3.
The heating chamber 5 is opened and closed by the heating chamber 5. This heating chamber 5
A high frequency wave emitted from a magnetron 6 provided between the outer box 2 and the inner box 3 is supplied inside. Also, outer box 2
A cooling fan 7 is provided between the inner box 3 and the inner box 3, and this fan 7 sucks outside air and applies it to the magnetron 6. The air is supplied into the heating chamber 5 through the duct 8, and then exhausted to the outside through an exhaust port (not shown). The inside of the heating chamber 5 is also heated by an electric heater 9 for oven cooking provided at the rear of the heating chamber 5, and a convection fan 10 is sometimes activated in the passage 7 of the electric heater 9. Then, air heated by the electric heater 9 is sent into the heating chamber 5.

At the inner bottom of the heating chamber 5, as shown in FIGS. 1 and 2, a rotary disk 11 having a recess 11a on the upper surface is provided. This rotary disk 11 is placed on a roller 12 provided at the bottom of the heating chamber 5, and a mounting base 13 located below the inner box 3.
It rotates around an intermediate shaft 15 supported via a bearing 14. On such rotary disk 11,
Normally, as shown in FIG. 2, a tray 16 is removably placed on a tray for placing a container containing food to be cooked, and when manufacturing bread, as shown in FIG. , a bread container 17 is removably attached.

This bread container 17 has a base 18 at its bottom, and a kneading shaft 19 is rotatably pivoted to the base 18 via a bearing 20. A kneading shaft 19 protrudes into the bread container 17.
A crosstalk part shrine 21 is removably attached to the upper end of the
In addition, at the lower end of the kneading tube 19 protruding into the base 18,
A rotation receiver 22 is attached. The bread container 17 is attached by fitting the base 18 into the recess 11a of the rotary disk 11. In this attached state, the iron annular plate 23 attached to the base 18 is attracted to the permanent magnet 24 attached to the back side of the rotary disk 1, thereby preventing it from accidentally coming off the rotary disk 11. It is done like this. In addition, when the bread container 17 is installed, the rotation receiver 22
is a rotation transmission pin 15a attached to the upper end of the intermediate shaft 15.
By engaging with the kneading shaft 19, the rotation of the intermediate shaft 15 is rotated by the kneading shaft 19.
It is intended to be transmitted to

Now, the rotary disk 11 and the intermediate shaft 15 are rotated by a drive motor 25 that can rotate in forward and reverse directions. That is, the drive motor 25 is fixedly disposed on the mounting base 13, and its rotation is first transmitted via a belt transmission mechanism 29 to a drive shaft 28 supported by a gear case 26 via a bearing 27. The rotation of the drive motor 25 transmitted to the drive shaft 28 is then transmitted to the gear train 30. As shown in FIG. 3, the final stage gear 30a of this gear train 30 meshes with the internal gear 31 of the rotary disk 11, and the rotation of the drive motor 25 is decelerated by the belt transmission mechanism 29 and the gear train 30. The signal is transmitted to the rotary disk 11, and the rotary disk 11 is rotated at a low speed. On the other hand, the drive shaft 2
8 is a gear train 30 provided concentrically with the intermediate shaft 15 and integrally formed at the upper end of the drive shaft 28.
A one-way clutch 32 for transmitting rotation of the drive shaft 28 in one direction to the intermediate shaft 15 is provided inside the first stage teeth Ili 30 b. Therefore, the drive motor 25 is
When the drive shaft 28 rotates in the direction of
When the drive motor 25 rotates in the opposite direction, the one-way clutch 32 is disabled and the rotation of the drive shaft 28 is transmitted only to the rotary disk 11. Such a gear train 30 and one-way clutch 32 transmit the rotation of the drive motor 25 to the kneading member 21 when kneading bread dough, and transmit the rotation of the drive motor 25 to the bread container 17 when baking bread dough, as will become clearer from the description of the operation described below. A drive mechanism 33 that transmits to
Configure.

Next, the operation of the above structure will be explained by applying it to the case of manufacturing bread. First, a bread container 17 containing ingredients such as flour, yeast, and water is placed in the heating chamber 5 as shown in FIG. 1, and bread production is started by operating a predetermined key. Then, first, the drive motor 25 rotates in the forward direction, and the rotation is transmitted to the rotary disk 11 via the gear train 30 and to the crosstalk member 21 via the one-way clutch 32. In this case, the kneading member 21 is connected to the drive shaft 2
8, it rotates in one direction at a relatively high speed (approximately 200 rpm). On the other hand, since the rotation of the drive shaft 28 is transmitted to the bread container 17 through the gear train 30, the bread container 17 rotates at a low speed (5 to 6 rpm) in the opposite direction. As a result, the mixing member 21 rotates at a relatively high speed relative to the bread container 17, whereby the materials in the bread container 17 are kneaded into bread dough. After this kneading, yeast fermentation is performed, and finally baking is performed.

Baking of the bread dough is performed by causing the electric heater 9 to generate heat and blowing hot air into the heating chamber 5 using the convention fan 10 while rotating the drive motor 25 in the opposite direction. During this baking, the drive motor 2
The rotation of the bread container 17 is transmitted only to the rotary disk 11 by disabling the one-way clutch 32.
is rotated at low speed (5-6 rpm). Therefore, even if the hot air is sent into the heating chamber 5 from behind, the hot air will not be blown directly onto only one side of the bread container 17, and the entire surface will be blown evenly with the hot air. Become. Moreover, even if temperature unevenness occurs in the heating chamber 5, since the bread container 17 is rotating, there is no possibility that a large amount of heat will be locally received. As described above, the entire bread container 17 is heated uniformly, and as a result, the bread dough is baked evenly, and there is no possibility of uneven baking.

Although the kneading member 21 is buried in the bread dough, it is rotatable during baking and rotates integrally with the bread container 17, so there is no problem of kneading the dough.

In addition, in this embodiment, the rotary disk 11 is used as a common driving body for the tray 16 and the bread container 17, so whether the tray 16 or the bread container 17 is attached to the rotary disk 11 depends on whether the tray 16 or the bread container 17 is attached. It can be used for cooking and bread making, and is easy to handle.

Note that the drive mechanism 33 may be configured so as not to transmit the rotation of the drive motor 25 to the rotary disk 11 during kneading of bread dough.

[Effects of the invention] As is clear from the above explanation, since the bread container is rotated during bread baking, the bread can be baked evenly without uneven baking, which is a clear practical effect. It is something that plays.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged longitudinal cross-sectional view of the main part shown in the state during bread production, and FIG. 2 is the first embodiment shown in the state when normal cooking is performed. FIG. 3 is an enlarged plan view showing the gear train, and FIG. 4 is a schematic cross-sectional plan view of the microwave oven in a state during bread production. In the figure, 1 is the main body, 5 is a heating chamber, 6 is a magnetron, 9 is an electric heater, 10 is a convection fan, 11 is a rotary disk, 15 is an intermediate shaft, 16 is a tray, 17 is a bread container, 1
9 is a kneading shaft, 21 is a kneading member, 25 is a drive motor, 28
30 is a drive shaft, 30 is a gear train, 32 is an internal gear, and 33 is a drive mechanism. Applicant Higashi Co., Ltd.: L,,, Shiba;- Agent Patent Attorney Sato

Claims (1)

[Claims] 1. In a device in which a bread container is removably disposed in the heating chamber, and the bread container can be used to perform everything from kneading to baking the dough, the rotation of the drive motor is A microwave oven with a bread making function characterized by being provided with a drive mechanism that transmits power to a kneading member provided in a container and to a bread container when baking bread dough.