JPH078264B2 - Fully automatic bread machine - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a fully-automatic bread maker that can produce freshly baked bread simply by charging a predetermined material.

Conventional technology When baking bread at home, equipment such as a kneading machine, fermenting bar, and oven is generally used, but it is very difficult to control temperature and time, and delicious baking is done regardless of time. It took a great deal of skill to make bread. In order to solve these problems, a baking machine with a kneading function, a fermentation function and an oven function housed in a single product
No. 6649] or a fully automatic bread machine that automatically bakes the bread by setting the timer shown in FIG. 4 [JP-A-56-3028].
Gazette]. In the former case, a drive mechanism is installed in an oven with a heater, a kneading container is installed in the oven, and after kneading and fermenting the ingredients, the kneading container is taken out, degassed, shaped and put in the oven. Shaped fermentation and baking are performed. In the latter configuration, the motor 3 is attached to the frame 2 provided in the main body case 1.
Then, the heating tank 6 having the heater 4 and the heat insulating material 5 mounted on the outer periphery is fixed, and the pan type 8 having the kneading blade 7 is installed in the heating tank 6 and is decelerated by the belt 14 and the pulley 15. A lid 11 having a top plate 9 and steam holes 10 is fitted into the heating tank 6 to cover the heating tank 6 and the pan 8. 12 is a timer,
It is a circuit for temperature adjustment and voltage adjustment. The temperature sensor 13 is fixed to the outer surface of the heating tank 6. With such a configuration, when the ingredients are put into the bread mold 8 and the timer is set, the operation starts at a predetermined time, each process is automated by the timer and temperature adjustment, and the bread is baked at the predetermined time.

Problems to be Solved by the Invention With such a conventional configuration, in the former case (Japanese Patent Publication No. 59-6649), the kneading and the fermentation are automatically performed by the timer setting, but once the fermentation is completed, the material is temporarily moved out of the oven. It takes time to degas and shape by hand, put it in the oven again for shaping fermentation and baking, so it takes time, and if you eat freshly baked bread in the morning, get up for about 4 hours and prepare. There is a problem to be solved. The latter [JP-A-56
-3028 gazette], the bread is automatically baked when the material is charged and the timer is set.However, the motor is used to automate the kneading and degassing work. There was a problem that the number of revolutions and torque changed due to the power supply frequency characteristics of, and the finish was slightly changed between the 50Hz region and the 60Hz region.

The present invention can make bread automatically, and the power supply frequency is 60H.
It is an object of the present invention to provide a fully automatic bread maker that can expect the same finish in any area of z and 50 Hz.

Means for Solving the Problems The pre-automatic bread making machine of the present invention comprises a baking chamber having a heater,
A baking pan that can be detachably mounted in the baking chamber, a kneading blade that is driven and transmitted by a motor provided at the inner bottom of the baking pan, and a control device that controls the heater and the motor to perform the baking operation are provided and controlled. When the commercial power supply voltage used in the equipment is detected to cross the zero volt, a pulse is generated each time it detects that the zero volt detection pulse of the zero volt pulse detection circuit is counted. It is characterized in that the kneading time and the degassing time are shortened.

Operation According to this configuration, the control device discriminates the commercial power supply frequency to be used, and automatically changes the kneading time and the degassing time between the 50 Hz region and the 60 Hz region so that the power supply frequency is shortened as the power supply frequency is increased.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 shows a fully automatic bread making machine according to the present invention, in which a motor 23 is fixed to a chassis 21 provided in a main body 20. A small pulley 24 is fixed to the shaft of the motor 23, and power is transmitted to the large pulley 26 via the belt 25. In the chassis 21, a heater chassis 28 having a lower heater 27 is fixed to the bottom surface, and a heat insulating material 29 is provided on the outer periphery of the firing chamber.
30 is fixed. Inside the baking chamber 30, there is a baking pan 32 having a detachable kneading blade 31 at the bottom, and a blade shaft 34 and an upper connector 35 are pivotally supported by a baking pan 33 fixed to the bottom of the baking mold 32. ing. Motor 23 and kneading blades
Reference numeral 31 constitutes a kneading device. Bread mold 32 is a baking room
30 Pan-type pedestal 38 that is provided at the bottom and fixed to the chassis 23 and that supports the large pulley 26, pulley shaft 36, and lower connector 37.
And is detachably fitted. On the side surface in the firing chamber 30,
The elastically supported temperature detecting portion 39 projects and is pressed against the side surface of the bread baking mold 32. The upper surface of the baking chamber can be closed with a lid 40 that can be opened and closed and an inner lid 41 provided on the lower surface of the lid 40. An upper heater 42 is provided in contact with the upper surface near the center of the inner lid 41, and is fixed to the lower surface of the lid 40. The upper heater 42, the lower heater 28, and the baking chamber 30 constitute a baking device. Inside the lid 40, a water injection solenoid for opening and closing a water injection valve 44 of a water tank 43 which is detachably installed in the lid 40 and dropping water from a water injection port 45 provided in the lid 40.
46 and a steam removal solenoid 47 that opens and closes a steam removal hole (not shown) provided in the inner lid 41. The water tank 43, the water injection valve 44, and the water injection solenoid 46 constitute a water supply device. 48 is a switch panel for input setting such as baking time, 49 is a control device, switch panel 48
Of the motor 2 based on the input of the
3, the lower heater 27, the upper heater 42 solenoid 46 for water injection 46 determines the control conditions of the solenoid 47 for vapor removal, and outputs.

FIG. 2 shows the control state in each step of the dough temperature and time in the fully automatic bread making machine under the condition that the room temperature is 20 ° C. or less. Although the control conditions are slightly different at room temperature of 20 ° C. or higher, the same idea is applied to the change of the condition due to the change of the power supply frequency, and therefore the description is omitted here.

Here, the control conditions of the kneading step and the degassing step are determined by the number of rotations and the torque of the motor 23 that constitutes the kneading device, so in the present embodiment, the kneading time is 20 ° C. or less and the power supply frequency is 60 Hz. For 30 minutes, primary gas release for 0.1 seconds “on”, 0.5 seconds “off” repeated 20 times,
Secondary degassing is repeated for 0.1 seconds "on" and 0.5 seconds "off" 10 times, and tertiary degassing is 0.1 seconds "on" and 0.5 seconds "off".
After repeating 20 times, it reverses for 1 second. When the power frequency is 50Hz, the kneading time is 35 minutes, 1
Secondary degassing is repeated 0.1 seconds “on” 0.5 seconds “off” 30 times, secondary degassing is repeated 0.1 seconds “on” 0.5 seconds “off” 20 times, tertiary degassing is 0.1 seconds “on”, After repeating 0.5 seconds “off” 30 times, it reverses for 1.5 seconds.

FIG. 3 is a circuit diagram including the control device 49. The series circuit of the upper heater 42 and the lower heater 27 is controlled by the contact 51 'of the relay 51, and the forward rotation of the motor 23 is controlled by the control rectifying element 52 and the reverse rotation is controlled by the rectifying element. 53
It is controlled by. Reference numeral 58 is a zero volt pulse detection circuit that outputs a zero volt pulse of the commercial power supply A used, and 55, 56 and 57 are transistors for driving the relay 51 and the control rectifying elements 52 and 53, respectively. Reference numeral 59 is another input / output circuit including temperature input, switch input, display output, etc., and 54 is a microcomputer for controlling these input / output by a program. V _DD is a DC power supply for the microcomputer 54.

The operation of this circuit will be described. First, when the commercial power supply A of AC 100 V is supplied, the DC power supply V _DD is supplied to the microcomputer 54 and the microcomputer 54 starts operating. At this time, first, the number of zero volt pulses within 45 [msec] from the first zero volt pulse from the zero volt pulse detection circuit 58 is counted, and when there are four, the commercial power supply frequency is 50 Hz, and when there are five, it is 60 Hz. Judgment is made to determine the kneading time and the number of times of clicking at the time of degassing according to the frequency, and the control rectifying elements 52, 53 are controlled by the program according to the time. Here, the kneading time of this embodiment and the number of cyclics of degassing are experimentally obtained, and if the motor 23 or the pulleys 24 and 26 change, these times also change, Each must be experimentally sought.

Effects of the Invention As described above, the fully automatic bread machine of the present invention includes a control device,
Since the zero volt pulse of the zero volt pulse detection circuit is counted and changed so that the kneading time and the degassing time become shorter as the number of counted pulses within a certain time increases, the control device determines the power supply frequency to be used, and the user Even if the setting operation is not executed, bread can be made under the best conditions without causing a difference in the finished bread between the 50 Hz region and the 60 Hz region.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is a vertical sectional view of a fully automatic bread making machine, FIG. 2 is a bread making operation process diagram,
FIG. 3 is a block diagram of the control device, and FIG. 4 is a vertical sectional view of a conventional fully automatic bread making machine. 23 …… Motor, 27 …… Lower heater, 30 …… Firing room, 31 ……
Mixing blade, 32 …… Bread baking type, 39 …… Temperature detection unit, 42…
… Upper heater, 43 …… Water tank, 49 …… Control device, 58 ……
Zero-volt pulse detection circuit, 54 ... Microcomputer

Front page continuation (72) Inventor Haruo Ishikawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A baking chamber having a heater, a bread baking mold which can be detachably mounted in the baking chamber, a kneading blade driven by a motor provided at the inner bottom of the baking mold, and the heater and the motor are controlled. A control device for bread-making operation is provided, and the control device counts the zero volt detection pulse of the zero volt pulse detection circuit that generates a pulse each time it detects that the commercial power supply voltage used crosses zero volt A fully-automatic bread maker configured such that the kneading time and the degassing time during the bread making operation process become shorter as the number of count pulses increases.