JPH0418525Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention involves putting flour, water, yeast, etc. into a bread baking case, kneading the flour and other bread ingredients in the bread baking case, and performing primary fermentation and secondary fermentation. This invention relates to a bread maker that bakes bread after baking.

"Prior Art" Conventionally, there has been a technique in which a stirring blade is installed inside the bottom of a bread baking case and the blade is rotated to knead bread ingredients.

"Problems to be Solved by the Invention" The prior art prevents the bread ingredients from moving around when kneading the bread ingredients, since the blades and the bread ingredients rotate together, resulting in insufficient kneading of the bread ingredients. There were structural and functional problems such as the need to provide special members.

``Means for Solving the Problems'' However, the present invention is a bread maker in which stirring blades are installed inside the bottom of the bread baking case, and a rotating arm is detachably attached to the rotating shaft provided at the bottom of the bread baking case. At the same time, a stirring blade is rotatably provided on the rotary arm, and the stirring blade is detachably installed in the axial direction of the rotating shaft, and the stirring blade is brought into sliding contact with the inner circumferential surface of the bread baking case to rotate and revolve. It is characterized by being configured so that each operation is performed individually.

"Action" Therefore, since the stirring blades are rotated and revolved,
Entrainment of the bread ingredients can be prevented without a special entrainment prevention member, and by omitting the entrainment prevention member, the bread ingredient kneading structure can be easily simplified and costs can be reduced, and the bread ingredients can be revolved around a rotating shaft. Since the stirring blade rotates on its own axis through sliding contact with the firing case, the rotation and revolution of the stirring blade can be achieved with a simple structure by simply interposing a rotating arm between the stirring blade and the rotating shaft without using sun gears or planetary gears. In addition, the rotating arm and stirring blades and other bread material kneading members can be removed without leaving them in the baking case, and the rotating arm and stirring blades can also be disassembled, making it easy to clean the baking case and bread material kneading members after bread baking. The work can be done easily.

"Embodiments" Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Figure 1 is a cross-sectional side view of the main parts, and Figure 2 is an overall view.The box-shaped main body case 2 is supported by supporting legs 1...
An upper case 3 is fitted and fixed on one side of the upper surface of the main body case 2, and a lid 4 which can be opened and closed is attached to a fulcrum shaft 3a of the upper case 3.

A base frame 5 is internally fixed to the bottom of the main body case 2, an inner case 7 is fixedly mounted on the base frame 5 via a bearing plate 6, and an annular heat ray radiant heater 8 is attached to the inner periphery of the inner case 7.

It also includes a cylindrical bread baking case 9 with an open top for introducing bread materials such as flour and yeast for kneading, fermentation, and baking, and a pair of locking pieces 10a that are engaged and released by rotation of the bread baking case 9. , 10b, the base plate 11 at the bottom of the bread baking case 9 is removably fixed to the bottom of the inner case 7 via the bearing plate 6.

Furthermore, a bearing part 12 is formed at the center of the bottom of the bread baking case 9, and an upper rotating shaft 14 is supported on the bearing part 12 via a metal 13.
A stirring motor 15 is fixedly installed on the upper part, and the output shaft 18 of the stirring motor 15 is interlocked and connected to the lower rotating shaft 19 of the bearing plate 6 through the belt 16 and pulleys 17a and 17b, while the lower end of the upper rotating shaft 14 and the lower rotating shaft are interlocked. axis 1
Clutch bodies 20a and 20b that can be freely engaged and disengaged from the upper end of 9.
are engaged and connected. Further, a disc-shaped stirring blade 21 is provided eccentrically at the upper end of the rotating shaft 14 by a rotating arm 22, and the stirring blade 21 is internally provided at the bottom of the bread baking case 9.

Further, the upper surface of the upper case 3 and the upper surface of the lid 4 are made approximately at the same height, and a glass window 23 having a spherical convex shape and a heat reflective film formed on the inner surface is provided at the center of the lid 4, and the inner surface of the lid 4 other than the glass window 23 is heated. The reflector plate 24 is stretched over the bread baking case 9 by protruding the upper end side of the bread baking case 9 outward from the upper opening of the main body case 2, and the upper end side of the bread baking case 9 is extended by the spherical surface of the heat reflecting plate 24 inside the lid 4. At the same time, an intake hole 26 is formed on the side surface of the lid 4 via an intake guide 25,
A blower guide 29 is fixed inside the upper case 3, a blower motor 30 and a blower fan 31 are provided inside the main body and the upper cases 2 and 3, and the blower fan 31
The air from the intake guide 25 is passed through the air blowing guide 29
It is configured such that the bread baking case 9 is fed out through the opening toward the upper surface of the bread baking case 9.

In addition, an air guide plate 32 is provided at the outlet of the intake hole 26 so that the air from the fan 31 is blown toward the inside of the baking case 9, and a blow guide plate 32 is provided at the outlet of the air intake hole 26 to prevent hot air and water vapor from the baking case 9 side from flowing in the direction of the fan 31. A backflow prevention plate 33 is provided at the entrance of the intake hole 26 to prevent
The structure is such that the prevention plate 33 is opened by the wind pressure of the fan 31 to blow air.

Furthermore, a dough sensor 34 is provided eccentrically with respect to the rotating shaft 14 on the bottom surface of the bread baking case 9 where the stirring blades 21 are disposed, and a heat conductive detection window 36 is provided via the heat insulating resin body 35 by the base plate 11. is fixed to the bottom of the bread baking case 9, and the dough sensor 34 is elastically supported from below the bottom so as to be movable up and down against the detection window 36 which projects inside the bread baking case 9.

Furthermore, as shown in Figures 1, 3, and 4,
Engaging columns 37, 37, which are protrusions, are fixed substantially horizontally on the upper end surface of the rotating shaft 14 at the bottom of the firing case 9, and a shaft hole 38 is opened downward at one end of the rotating arm 22, An engagement notch 39 is formed at the outer peripheral position of the shaft hole 38, and by inserting the upper end of the rotating shaft 14 into the shaft hole 38, the engagement column 37 having a right-angled triangular end surface engages with the engagement notch 39.
The rotating arm 22 is configured to rotate in conjunction with the rotating shaft 14 that rotates in one direction (clockwise).

In addition, the column 37 is rotated through the notch 3 against the lifting force of the rotating arm 22 caused by the resistance of the bread material.
9, and a guide slope 41 that allows the column 37 to escape from the notch 39 by reversing the rotating shaft 14 (counterclockwise rotation), one side of which is opened downward. It is formed in the triangular notch 39, and the engaging protrusion 40 is brought into contact with the column 37 engaged in the notch 39 from below, thereby preventing the rotating arm 22 from floating above the rotating shaft 14. At the same time, the column body 37 is brought into contact with the guide slope 41 by reversing the rotating shaft 14, and the rotating arm 22 is lifted above the rotating shaft 14, and the rotating arm 22 is removed from the rotating shaft 14.
is detached, and the stirring blade 21 is detached from the rotating shaft 14.

Further, a disk portion 44 in which the heat-resistant synthetic resin ring 42 is fitted into the ring groove 43 on the outer periphery, and a pair of blade portions 45, 45 integrally formed on the upper surface of the disk portion 44 are provided.
It is formed on the stirring blade 21 and also on the rotating shaft 14.
A shaft body 46 is integrally formed on the upper surface of the other end side of the rotary arm 22 which connects and fixes one end side to the rotary arm 22, and the approximate center of the disc portion 44 is rotatably supported on the shaft body 46 via a boss 47 and a bolt 48. , the disc part 44 of the stirring blade 21 is attached to the inner peripheral surface of the bread baking case 9 via the ring 42.
Slide the outer periphery.

Then, the rotating arm 22 is rotated around the rotating shaft 14 to cause the stirring blade 21 to revolve, and the stirring blade 21 is also rotated around the shaft body 46 due to the sliding resistance of the bread baking case 9 and the ring 42 to rotate. It is configured as follows.

Furthermore, as shown in FIG. 2, an operation panel 49 is attached to the front of the main body case 2, and a heat insulator
An oven sensor 51 is fixed to the inner case 7 surrounding the outer periphery.

Furthermore, FIG. 5 is a control circuit diagram, which includes a menu switch 52 for selecting the type of bread (white bread, French bread, etc.), reservation switches 53 and 54 for setting the hours and minutes of bread baking time, and their initial settings. A cancel switch 55 for resetting the bread-making process and a start switch 56 for starting bread making are provided. Each of the switches 52 to 56 is connected to a pan adjustment circuit 57 composed of a microcomputer, and a seven-segment display 58 for displaying time and warning errors is connected to the circuit 57. 34,5
1 is connected to the circuit 57 via the changeover switch 59, and the changeover switch 59 is automatically changed over by the timer output of the circuit 57 to connect each sensor 34,
51 is configured to be input and connected according to the bread making process.

Further, a thermostat 60 is connected as an input to the circuit 57, and the thermostat 60 is a means for detecting whether or not the inside of the inner case 7 constituting the oven is below the yeast killing temperature (approximately 60°C).
After the bread making reservation operation and before the start of the bread making operation, an alarm such as an error display and the interruption of the bread making operation are performed based on the excessive temperature output from the thermostat 60. An alarm such as an error display is issued based on the excessive temperature output from the tatsuto 60, and when baking bread continuously, the bread ingredients and yeast are added after the inside of the baking case 9 has cooled down to prevent the yeast from dying due to high temperatures. It is configured as much as possible.

Also, a relay 6 connected to the bread preparation circuit 57
A current sensor 63 applies this power to the reversible stirring motor 15 in a forward and reverse manner via the normally open relay switch 61 of No. 1, and detects the application of power to the heater 8 based on the current flowing through the heater 8.
and the heater 8 at times other than the heating period during the bread making operation.
and a relay 65 which is a control means for turning off the heater 8 when the heating operation signal from the bread preparation circuit 57 is off and current is flowing through the heater 8. This power is applied to the heater 8 via the normally closed relay switch 66 of the relay 65 and the triax 64.

Further, the blower motor 30 is provided via a normally open relay switch 68 of the relay 67, and a buzzer 70 is output connected to the adjustment circuit 57 via an amplifier 69.

Furthermore, the power supply voltage (+
The bread preparation circuit 57 is equipped with a voltage monitoring circuit 71 that detects when the voltage (+4.7V) drops due to a power outage, etc., and prepares for low current consumption operation.
The H level output from the monitoring circuit 71 is applied to the monitor circuit 71. Then, the output terminal P1, which generates an L level output at the end of the interrupt (NMI) control of the adjustment circuit 57, is connected to the standby terminal (STBY) of the adjustment circuit 57, and after the interrupt (NMI) processing is completed, low current consumption operation is prepared. (standby mode), and is configured to prevent the device from entering standby mode before interrupt (NMI) processing is completed, even if the time for the power supply voltage to drop changes due to load current, etc.

In addition, a monitoring timer 72 is provided, which is a control circuit that starts low current consumption operation only when preparations for low current consumption operation are completed and a voltage drop continues, and a monitoring timer 72 is provided, which controls the voltage (+4. 5V)
Below, the L level output from the monitoring circuit 71 is applied to the monitoring timer 72. Then, the delay circuit 73 and the backup capacitor 74 are connected, and the output of the timer 72 is connected to the reset terminal (RESET) of the bread preparation circuit 57, and the timer 72 allows the preparation circuit 57 to return to normal in response to a temporary voltage drop. For example, a temporary voltage drop (+4.6V) causes an interrupt (NMI) to continue the bread making operation.
Only processing is performed, and there is also a temporary voltage drop (+
4.4V), only interrupts (NMI) and standby mode processing are performed, eliminating the problem of stopping the CPU operation of the adjustment circuit 57, allowing normal recovery even after standby mode processing, and preventing noise and temporary It is possible to prevent the bread making operation from being stopped due to a voltage drop, and it is also possible to eliminate the problem that the timing of preparation for low current consumption operation changes depending on the load current. ) is operated in a low current consumption operation, and when the power is turned on again, the bread making operation is performed from the state before the power outage.

Further, the oven sensor 51 is connected as an input to a regulating circuit 57 via an integrator 75 and a comparator 76, and a transistor 77 is connected to the regulating circuit 57, which is turned on by the output T of the regulating circuit 57 at preset intervals. The capacitor 78 is charged with the output of the oven sensor 51 from the integrator 75, and the electrical resistance value of the oven sensor 51 is detected at each set time and stored in the adjustment circuit 57 in advance. The system is configured to perform multiple temperature measurements in comparison with multiple temperature data.

This example is constructed as described above, and bread ingredients such as flour, yeast, seasonings, butter, and water are introduced in the state shown in Figure 2. In addition to adding water to prevent yeast from leaking, the bread baking time etc. can be set by operating the switch on the operation panel 49. The heater 8 is operated intermittently, and based on the oven sensor 51 output.
Keep the temperature above 1 degree to prevent yeast from dying.

In addition, the bread making operation is started about 4 hours in advance by calculating backwards the time required for bread baking from the bread baking time, and the stirring motor 15 rotates the blades 21 to knead the bread ingredients in the baking case 9. At the same time,
Air is sent into the baking case 9 by the blower fan 31, and the air is sent into the baking case 9 based on the dough sensor 34 output.
The temperature inside was maintained at t2 degrees, and the first stirring for m1 hours, the rest for m2 hours, and the second stirring for M1 hours were performed.

Then, the temperature is maintained at t3 degrees based on the output of the oven sensor 51, fermentation for M2 hours and rounding process for m3 hours are performed, and after the elapse of the waiting time for M3 hours, the rounding process for m4 hours is performed, and the rounding process for m5 hours (1~ 2 rotations)
Then, the stirring motor 15 is reversely rotated, and the rotary shaft 14 is reversely rotated to perform a blade removal operation in which the rotary arm 22 and the stirring blade 21 are separated from the rotary shaft 14. Then, it undergoes a roasting process for M4 hours.
In the process from preheating to roasting, we confirm that the temperature is below t4 degrees based on the thermostat 60 output, and when the oven temperature rises above the temperature that kills the yeast, an error message is displayed and the baking Stop the operation.

Then, until the fabric sensor 34 detects t5 degrees,
Or turn on heater 8 until the baking time of M5 hours has elapsed.
to bake the bread, operate the fan motor 31 to cool the bread for M6 hours, complete the production of the bread, and operate the buzzer 70. During the bread making operation, the oven sensor 41 output The capacitor 78 is charged at regular intervals, and the output of the sensor 41 is compared with the temperature data of the preparation circuit 57 to detect a plurality of internal temperatures t1, t3, t7 of the inner case 7, and the bread is fermented and baked. It allows the operations to be performed automatically and continuously.

Note that although the blower motor 30 and the blower fan 31 are provided, these blower functions may be omitted, and the temperature adjustment is not limited to the control operation of each of the sensors 34 and 51, and is not limited to the stirring in the above embodiment. The blades 21 can be easily attached to a structure for kneading bread ingredients, and are not limited to the baking structure of bread.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides a bread maker in which a stirring blade 21 is installed at the bottom of the bread baking case 9, in which a rotary arm is attached to the rotating shaft 14 disposed at the bottom of the bread baking case 9. 22 is removably provided, a stirring blade 21 is rotatably provided on the rotary arm 22, and the stirring blade 21 is removably installed in the axial direction of the rotating shaft, and is provided on the inner peripheral surface of the bread baking case 9. It is configured so that the stirring blades 21 are brought into sliding contact and rotated and revolved, respectively.Since the stirring blades 21 rotate and revolve, the bread ingredients are prevented from being rotated without a special anti-rotation member. By omitting the co-rotation prevention member, it is possible to simplify the bread material kneading structure and reduce costs, and also because the stirring blades 21, which are revolved by the rotating shaft 14, are rotated by sliding contact with the baking case 9. , the rotation and revolution motion of the stirring blade 21 can be obtained with a simple structure in which only the rotating arm 22 is interposed between the stirring blade 21 and the rotating shaft 14 without using a sun gear or a planetary gear, and the rotating arm 22 and the stirring blade 21 can be removed without leaving them in the baking case 9. Furthermore, the rotating arm 22 and the stirring blade 21 can also be disassembled, and the baking case 9 and the bread material kneading member 22, after bread baking can be removed. 2
This has the remarkable effect of making the cleaning work in step 1 easier.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of the main parts showing an embodiment of the present invention, Fig. 2 is an overall view, and Fig. 3 is a plan view of the main parts.
FIG. 4 is an exploded view, FIG. 5 is a control circuit diagram, and FIG. 6 is a timing chart of bread making operation. 9... Bread baking case, 14... Rotating shaft, 21
... Stirring blade, 22 ... Rotating arm.

Claims (1)

[Scope of utility model registration request] In a bread maker in which a stirring blade 21 is internally provided at the bottom of the bread baking case 9, a rotating arm 22 is detachably provided on the rotating shaft 14 disposed at the bottom of the bread baking case 9, and the stirring blade 21 is attached to the rotating arm 22. The stirring blade 21 is provided so as to be freely rotatable, and the stirring blade 21 is detachably installed in the axial direction of the rotating shaft, and the stirring blade 21 is brought into sliding contact with the inner peripheral surface of the bread baking case 9 to perform rotation and revolution operations, respectively. A bread maker characterized by comprising: