JPS6334596Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic bread maker particularly suitable for home use.

To bake bread, the ingredients, such as flour, yeast, a small amount of butter, and sugar, are kneaded together with water to undergo primary fermentation, and after degassing, secondary fermentation is performed.
After degassing and fermenting the dough, it is baked and finished, which takes about 4 hours. In this bread-making process, the conditions for kneading ingredients, fermentation, degassing, etc. change depending on the influence of temperature and humidity, and therefore the conditions for bread-making change depending on spring, summer, autumn, and winter. . For example, the temperature
If the temperature is above 20°C or about 30°C, the kneading temperature of the ingredients will be too high, and the gluten will not be formed properly, resulting in a lackluster and unpalatable bread. It has been found that when bread is kneaded at a temperature of around 15°C, the kneading temperature reaches the optimum temperature of around 27°C, the dough becomes glossy, and gluten is formed better. For this reason, in conventional bread machines, bread was baked by adjusting the temperature and humidity according to the season, temperature, and humidity. This adjustment did not always go well, and it was difficult to always make bread of uniform quality. Especially when the ingredients are kneaded, the temperature rises, but if you raise the temperature too much, you won't get good bread.

The purpose of this invention is to provide an automatic bread maker that has a simple configuration and can make bread at a substantially constant temperature regardless of the temperature, that is, can always make good bread.

According to this invention, a water tank covered with a heat insulating layer is provided, and an ice case for storing ice is placed inside the water tank. Water is stored between the ice case and the water tank, and a water supply pipe is provided to supply the water to the material container in which the material is kneaded.

An embodiment of the automatic bread maker according to this invention will be described below with reference to FIGS. 1 and 2. An opening/closing lid 12 is provided in one half of the upper part of the housing 11 of the bread making machine, and a material container 13 that can be removed when the lid is opened is housed in the housing 11 under the opening/closing lid 12. A water tank 14 is adjacent to the material container 13 and the casing 11
The water tank 14 has a lid 15 attached to its upper side so as to be openable and closable.

In this invention, water is supplied to the material container 13 at a predetermined temperature. Therefore, in this example, the peripheral wall of the water tank 14 is surrounded by a heat insulating layer 16, so that the inside thereof is not easily affected by the ambient temperature. Further, an ice case 17 is disposed in the water tank 14 so as to be freely taken out, and ice 18 can be placed in the ice case 17. Heat dissipation fins 19 are formed on the outer circumferential surface of the ice case 17 as necessary, and water is poured into the water tank between the outer circumferential surface of the ice case 17 and the inner circumferential surface of the water tank 14, and the ice case 17 By placing ice 18 inside the water tank 14, the water in the water tank 14 can be maintained at a constant temperature, for example, about 5°C. This tank 1
The water controlled at a constant temperature in the container 4 is supplied from the upper side of the material container 13 through a water supply pipe 22 by a pump 21 to a hole 2 formed in the upper lid 13a of the material container 13.
3 into the material container 13.

As shown in FIG. 2, a board 24 is installed horizontally within the box 11 relatively close to the bottom plate 11a of the box 11 of the bread making machine, and a disk-shaped fixture 2 is mounted on the board 24.
5 is fixed. On the other hand, a mounting base 26 is fixed to the bottom plate of the material container 13, and the collar 26a of the mounting base 26 is hooked by rotation to an engaging protrusion 27 projecting in the horizontal direction of the fixture 25, so that the material container 13 can be vertically moved. When the material container 13 is to be removed, the material container 13 is rotated to disengage the protrusion 27 and the collar 26a. Brim 26a
Although not shown in the figure, a notch for disengaging the engagement with the protrusion 27 is formed therein.

A rotating shaft 28 is inserted into the material container 13 . That is, in this example, a through hole is formed in the center of the fixture 25, a bearing 29 is attached to the inner peripheral surface of this through hole, and the rotating shaft 28 is inserted into the bearing 29 so as to be rotatable. In addition, the bottom plate 13b of the material container 13 and the mounting base 2
Through holes are formed in 6, and the rotating shaft 28 can be positioned inside the material container 13 by passing through these through holes. A rotating blade 31 is attached to the rotating shaft 28 within this material container 13 .
The rotary blade 31 has a cap-shaped end 31a, and the rotary shaft 2 is disposed within the cap-shaped portion 31a.
A vertical groove 32 in the vertical direction is formed on the outer periphery of the rotating shaft 28, and a detent key 3 is fitted into the groove 32.
3 is formed protrudingly on the inner peripheral surface of the cap portion 31a,
The cap-shaped portion 31a is connected to the shaft 2 from the upper end of the rotating shaft 28.
8 and which are engaged with each other in the direction of rotation and are therefore perpendicular to the axis of rotation 28
1 rotates when the rotating shaft 28 rotates.

A fixed rod 34 is provided close to the rotation circle of the rotating blade 31 and extends in the radial direction of the rotation circle. For example, as shown in this figure, the rotating shaft 28 has a cylindrical shape, and the fixed shaft 35 is inserted into the rotating shaft 28.
The lower end of the fixed shaft 35 is fixed to the bottom plate 11a of the case 11, and the upper end of the fixed shaft 35 passes through the rotating shaft 28 and further through the cap-shaped portion 31a of the rotary blade.
3, and one end of a fixed shaft 35 is fixed onto the protruding end thereof. A bearing 3 is provided between the inner peripheral surface of the upper and lower ends of the rotating shaft 28 and the outer peripheral surface of the fixed shaft 35.
6,36' are interposed. A ring-shaped seal 3 is provided between the fixed shaft 35 and the rotating shaft 28 between the bearing 36 and the cap-shaped portion 31a of the rotating blade.
7 is packed. One end of the fixed rod 34 is also formed into a cap-shaped portion 34a, into which the inner end of the fixed shaft 35 is inserted. In this case as well, an axial key groove 38 is formed on the outer circumferential surface of the fixed shaft 35, and a key 39 formed on the inner circumferential surface of the cap-shaped portion 34a is inserted into and engaged with this key groove 38, so that the fixed rod 34 is Fixed in the direction of rotation. Further, one end of a fixing spring 41 is fixed within the cap-shaped portion 34a, and the other end of the spring 41 is engaged and pressed into the recess 32 of the fixed shaft 35 on the opposite side of the key groove 38. Therefore, when the fixing rod 34 correctly pulls the cap-shaped portion 34a upward in the vertical direction a little forcefully, the spring 41 and the recessed portion 4
2 can be disengaged and removed, but in the direction of rotation, it is sufficiently strongly engaged by the keyway 38 and the key 39 that it does not rotate, and the fixed rod 34 does not engage with the fixed shaft 35. When extending in the right angle direction and receiving an upward force at its free end, the fixed rod 34 and the fixed shaft 35
The force that causes the fixed rod 34 to rotate in a plane containing
The circumferential surfaces of the cap-shaped portion 34a and the fixed shaft 35 are strongly pressed against each other, making it difficult for the cap-shaped portion 34a to come off.

The rotating shaft 2 is located between the bottom plate 11a and the substrate 24.
A pulley 43 is fixed on the 8. On the other hand, as shown in FIG. 1, a motor 44 is held on the substrate 24 via a vibration isolating means 45 in the case 11 below the water tank 14. A pulley 47 is attached to the rotating shaft 46 of the motor 44. Also, a shaft 48 erected on the bottom plate 11a
A pulley 49 is attached to the top, and pulleys 47, 49
A belt 51 is placed between them, and the rotation of the rotating shaft 46 is decelerated by the pulleys 47, 49 and the belt 51 and transmitted to the rotating shaft 48.
A belt 53 is placed between the pulley 43 and the pulley 43, and the rotation of the shaft 48 is transmitted to the pulley 43 through the belt 53 at a reduced speed.

Further, in this embodiment, means are provided for detecting the temperature of the material while it is being kneaded. In this example, as shown in FIG. 2, the fixed shaft 35 is formed with a center hole 54 that communicates in the axial direction, and the inner end of the center hole 54 is located near the inner end of the fixed shaft 35, that is, in a cap-shaped portion. 31a and 34a, and a temperature-sensitive resistance element 55 is inserted at that position.
A lead wire 56 of the temperature-sensitive resistance element 55 is led out from the lower end of the fixed shaft 35. As shown in FIG. 1, a heater 57 is placed around the outer periphery of the material container 13 for heating the material in the material container 13 to bake bread. The panel board 58 of the box 11 has a power switch 59 and a bread completion time setting button 6.
1, a display section 62, a time setting switch 63, a display section 64, etc. are provided. Further, in order to control the temperature during heating by the heater 57, a temperature sensitive resistance element 65 is provided at a position near the outer periphery of the container 13.

To automatically bake bread in this configuration, use lid 1.
2, then remove the top lid 13a of the container, put a predetermined amount of ingredients such as flour, yeast, butter, and sugar into the material container 13, and close the lids 13a and 12, while pouring a predetermined amount of water into the water tank 14. At the same time, all you have to do is put ice 18 into the ice case 17, set the bread completion time, and turn on the power. In this way, the water in the water tank 14 is maintained at a temperature of about 5° C. even in summer, and remains at a constant temperature regardless of whether it is summer or winter. In particular, depending on the temperature, for example, 30℃, 25℃, 20℃, ice 18 is added to 300g, 200g,
If 100g and 200g of water are placed in the aquarium 14, the temperature of the water in the aquarium 14 after 6 hours will be about 4°C to 5°C in either case. About 4 hours before the set bread completion time, the pump 21 is activated to supply the water in the water tank 14 into the material container 13, and the motor 44 is driven to rotate the rotary blade 31. For example, it is said to be about 200 times per minute. This rotation kneads the material in the container 13, but at this time, the material gets entangled with the fixed rod 34, and the material is mutually kneaded between this and the rotating blade 31, so even at a relatively slow rotation speed, the material can be sufficiently kneaded. Can be kneaded. During the first kneading, the material temperature is
The temperature of the material rises during kneading, which is approximately 15°C, and is detected by the temperature-sensitive resistance element 55. After kneading for more than ten minutes, the temperature of the material rises to a predetermined temperature, for example 27°C. When this happens, it is determined that the dough has been kneaded sufficiently and the kneading process is finished. At this time, as mentioned earlier, the temperature of the supplied water is a constant temperature of, for example, 5℃, the initial kneading temperature always starts from about 15℃, and the kneading time is only about 10 minutes. Therefore, it is almost unaffected by temperature fluctuations. The bread is always kneaded in good condition and the dough is glossy and delicious when baked.
When this kneading process is completed, primary fermentation gas venting, secondary fermentation gas venting, molding fermentation, etc. (not shown in the figure) are automatically performed by the control unit, and then the heater 5
7 is energized, the inside of the material container 13 is heated, the material inside is baked, and the bread is baked by heating for a predetermined period of time. Note that if the temperature has fallen below 15°C, the heater 57 may be used to keep the material temperature at the beginning of the kneading process at about 15°C.

Note that as shown in FIG. 2, the upper lid 13a of the container 13
The hole 23 is formed in the center of the recess 66, and by appropriately selecting the size of this hole, the moisture filling the container 13 can be appropriately released through the hole 23 to maintain a constant humidity. This allows for better bread baking. The fixing rod 34 does not have to be attached to the fixing shaft 35. For example, as shown in FIGS. 3A and 3B, a mounting hole 68 is formed in the side wall of the container 13,
The fixing rod 34 may be inserted into the container 13 through the attachment hole 68. Alternatively, as shown in FIG. 4, a fixing plate 69 is arranged on the container 13, and the rotating shaft 28 is inserted through the fixing plate 69 and arranged inside the container 13, and a plate is placed coaxially with the rotating shaft 28 and on the outer periphery of the fixing plate 69. A fixed shaft 35 is arranged,
A fixing rod 34 can also be attached to the fixed shaft 35.
In this case, the material container 13 is taken out and taken out from the bottom of the case 11.

As mentioned above, according to the automatic bread maker of this invention, by keeping the temperature of the supplied water constant, it is possible to always make good bread without being affected by the external temperature. . It may be possible to maintain a constant temperature of the ingredients by incorporating a cooler into the bread maker, but this would result in a complicated, large, and expensive structure. However, when putting ice in the ice case, the structure is extremely simple, small,
It's cheap to make, and you can easily use the ice you already have in your refrigerator. In addition, as in the previous example, by detecting the material temperature at the position of the rotating blade 31, that is, at the part of the material being kneaded, it is possible to detect that the material has finished kneading when the material temperature reaches a predetermined temperature. You can also get good bread from the point. By doing as in the previous example, it is possible to make bread fully automatically, from kneading the ingredients to baking, without the need for any human intervention. In other words, by setting the ingredients in advance before the bread is ready and setting the baking time, for example, the night before, it is possible to automatically obtain ready-made bread the next morning.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing an example of an automatic bread maker according to this invention, Fig. 2 is a sectional view of its main parts, and Figs. 3 and 4 show modifications of the main parts. FIG. 11: Box, 13: Material container, 14: Water tank, 1
6: Heat insulation layer, 17: Ice case, 18: Ice, 21:
Pump, 22: Water supply pipe, 28: Rotating shaft, 31: Rotating vane, 34: Fixed rod, 35: Fixed shaft, 55: Temperature-sensitive resistance element.

Claims (1)

[Scope of utility model registration request] In an automatic bread making machine that kneads the ingredients by putting the ingredients into an ingredient container, a water tank covered with a heat insulating layer is provided, and an ice case for storing ice is placed inside the water tank. An automatic bread maker, which is capable of storing water between a case and the water tank, and is provided with a water supply pipe for supplying the water to the material container.