JPH0420333B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic bread maker that can produce freshly baked bread simply by adding predetermined ingredients.

Conventional technology A conventional automatic bread maker had a structure as shown in Fig.
Publication No. 3028).

That is, there is a kneading blade 3 in a bread baking mold 2 located in a baking chamber 1 containing a predetermined material. The kneading blades 3 are transmitted and driven by a motor 4 to knead predetermined materials placed in the bread baking mold 2 to form bread dough. After the above-mentioned kneading, the temperature and time of the heater 5, which is insulated and wound around the outside of the baking chamber 1, is controlled by the circuit 6 to carry out fermentation and to rise the bread 7. After fermentation, the temperature and time of the heater 5 are controlled by the circuit 6 to bake the bread 7. At this time, the outer surfaces of the outer shell 8 and lid 9 become hot, and if a person accidentally touches them, they may get burned. .
Therefore, in the conventional example, a heat insulating material 10 such as glass wool was inserted between the outer shell 8 and the firing chamber 1 to lower the temperature of the outer surface of the outer shell 8.

Problems to be Solved by the Invention However, in the configuration shown in Fig. 3, the kneading blades 3
During the kneading process, the baking chamber 1 is covered with a heat insulating material 10.
Since the internal heat does not escape, there is a problem in that the temperature of the dough rises rapidly due to frictional heat between the mechanical parts and the dough. By the way, the conditions for making good quality bread are that the kneading is sufficient and that the kneading is stopped at the fermentation temperature of the bread dough.If the conventional configuration is such that the temperature of the dough rises high during kneading, if the kneading is stopped at the fermentation temperature of the bread dough, the kneading will be stopped at the dough fermentation temperature. There was a problem that the time was short and the kneading was insufficient, making it impossible to obtain high-quality bread.

In addition, steam and hot air may leak from the gap between the lid 9 and the outer shell 8 during firing, and if you touch the gap, it will be hot and cause burns, or the steam may condense on the outer shell 8, causing water to accumulate on the outer shell surface. There were problems such as water flowing down. In addition, the heat insulating material 10 such as glass wool is expensive, and the heat insulating material 10 is difficult to assemble during assembly.
Because the fibers of 0 can get on your hands or get into your lungs when you breathe, there are problems in that they are difficult to handle, require a special room, require a lot of assembly man-hours, and are expensive.

Means for Solving the Problems In order to solve these problems, the present invention has a structure in which a heat exhaust hole communicating with the outside air is provided in the upper part of the space between the heat shield plate and the outer shell.

Effect The effect of this technical means is as follows.
In other words, by providing a heat exhaust hole that communicates with the outside air in the upper part of the space between the heat shield and the outer shell, the heat shield reflects the radiant heat that occurs as the temperature of the baking chamber increases, and the heat shield also connects the baking chamber with the heat shield. In addition to insulating the board with an air layer,
Due to the structure of the heat exhaust holes, the drift of thermal convection air as the temperature of the heat shield increases creates an air flow from the bottom to the heat exhaust holes, and the outer surface of the heat shield and the inner surface of the outer It is cooled and lowers the temperature of the outer shell surface.

Furthermore, by forced cooling of the surface of the heat shield plate through the heat exhaust holes, it is possible to reduce the temperature rise of the dough during kneading.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. In FIG. 1, reference numeral 11 denotes a chassis, and the outer body consists of a lower body 12 attached to the chassis 1 and machined from sheet metal, and an upper body 13 attached to the lower body 12 and molded with resin. A motor 14 is attached to the chassis 11, and the rotation of the motor 14 is transmitted to a large pulley 18 rotatably attached to a bearing 17 press-fitted into the chassis 11 through a belt 16 that is placed around a small pulley 15 attached to a rotating shaft. , rotate the lower connector 19 fixed to the large pulley 18 by caulking or the like. Seal the bottom 1
There is a bread baking mold 2 inside the baking chamber 20 fixed to 1.
1, and its position is fixed by a baking mold stand 22. The bread baking mold 21 has a kneading blade 23 detachably provided on the upper connector 22 which contacts the lower connector 19 and transmits rotation. On the side surface of the firing chamber 20, a heater 26 is attached by screwing a fixed insulator 24 and a fixing metal fitting 25, and a sensor 27 holding a thermistor inside is attached. The top frame 28 is attached to the top 13 of the body with screws or the like. A heat shield plate 29 made of a metal plate whose surface is coated to reflect as much radiant heat as possible is inserted into the groove 30 of the top frame 28 with a gap of about 3 to 10 mm from the outside of the baking chamber 20, and the top part is inserted into the groove 30 of the top frame 28. The end faces of 28 are brought into contact with each other to prevent hot air from flowing out in the direction 13 on the body as much as possible. Further, the lower part of the heat shield plate 29 is bent and placed between the chassis 11 and the firing chamber 20, and the firing chamber 20 and the chassis 11 are fixed by screwing together. heat shield plate 29 and lower body 12,
A heat exhaust hole 31 communicating with outside air is provided in the balance balance 28 located above the space with the upper body 13.

Furthermore, a firing lid 32 that forms a firing space above the firing chamber 20 is elastically attached to a lower lid 33.
The lower lid 33 is connected to the upper lid 34 by screwing. A yeast container 35 is attached to the baking lid 34, and a valve 36 is attached to a hole in the yeast container 35 in the opening direction of the bread baking mold 21 so that it can be opened and closed by a spring in the closing direction. A solenoid 38 is attached to the lid top 34 with a valve lever 37 at one end of the solenoid 36, and a lever 39 is movably attached to the tip of the plunger. It has an open structure.

An exhaust guide 40 is fixed between the upper lid 34 and the lower lid 33 with a sander bench, and the lower lid 33 below the exhaust guide 40 is open. Also, the baking lid 32
A steam hole 41 is provided in the.

Next, to explain the operation of this embodiment, ingredients such as water, flour, sugar, and salt are placed in the bread baking mold 21.
When the panel 42 at the top of the circuit (not shown) is operated, the circuit first rotates the motor 14, and the kneading blades 23 are rotated by power transmission to knead the material. When the kneading is completed, the yeast 43 enters the kneading pan, and when the set time for kneading has elapsed, the solenoid 38 is activated, the valve 36 is opened, and the yeast 43 falls into the baking mold 21. The motor 14 rotates again to knead the materials. When the kneading is finished, the heater 26
Electricity is applied to control the temperature of the bread baking mold 21, and the process proceeds through primary fermentation, secondary fermentation, and forming fermentation. Between each fermentation, the motor 14 is slightly rotated to remove gas. After forming and fermenting, the fermented bread 44 is transferred to the motor 26.
Electricity is applied to bake the bread, and when the process is complete, a buzzer sounds to notify the baker that the bread is ready.The bread is made automatically by simply adding the ingredients.

Here, a heat exhaust hole 3 communicating with outside air is provided in the upper part of the space between the heat shield plate 29 and the lower body 12 and the upper body 13.
1, the heat shield plate 29 is made of a metal plate and has a surface coated with good reflection to reflect the radiant heat caused by the temperature increase due to the energization of the heater 26 in the firing chamber 20. In addition to providing heat insulation with a 3-10mm air layer between
Due to the drift due to thermal convection of the air in the space of 9,
An air flow is formed from the bottom to the heat exhaust hole 31, and the temperature of the surface of the heat shield plate 29 in particular is cooled by the outside air sucked in from the bottom.
2. The air that has been cooled and heated outside the upper body 13 passes through the heat exhaust hole 31 and is discharged to the outside from the exhaust guide 40, lowering the temperature of the outside so that even if a person easily touches it, there will be no burns. It's something you don't do.

Further, by forced cooling of the surface of the heat shield plate 29 by the heat exhaust holes 31, the temperature rise of the bread dough due to frictional heat between the mechanical parts and the dough during kneading can be reduced through the baking chamber 20. This effect makes it possible to sufficiently knead the bread dough up to the fermentation temperature, which is a condition for producing high-quality bread.

In addition, especially during firing, the firing chamber 20 can be opened from the steam hole 41.
The high-temperature steam and steam inside the exhaust guide 40 flow out at high speed and exit to the outside air, but this high-speed flow of steam and hot air has the effect of sucking up the hot air exiting from the heat exhaust hole 31 by a so-called ventilly effect. Come out, heat shield plate 29, lower body 12, upper body 1
The amount of hot air flowing in the outer space of No. 3 is increased, and cooling is increased. Furthermore, since the temperature of the hot air coming out of the heat exhaust hole 31 is much lower than the steam and hot air coming out of the steam hole 41, the lower lid 33 is cooled by the hot air coming out of the heat exhaust hole 31, and the lower lid 33 is cooled. This has the effect of lowering the temperature outside the lid 34 and also lowers the temperature of the steam and hot air released from the exhaust guide 40, thereby preventing burns and abnormalities when something is placed on the lid 34.

Effects of the Invention As is clear from the description of the above embodiments, the present invention provides a heat exhaust hole that communicates with the outside air in the upper part between the heat shield plate and the outer shell, so it is possible to lower the temperature of the outer shell with a simple structure. It can be made highly safe and will not cause burns even if a person easily touches it. In addition, it is possible to reduce the rise in temperature of bread dough during kneading by cooling, extend the kneading time, and improve the performance of producing well-kneaded bread dough and producing high-quality bread. Furthermore, it is easy to assemble and the materials are inexpensive, thereby reducing costs.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an automatic bread maker according to an embodiment of the present invention, FIG. 2 is a sectional view of a portion thereof, and FIG. 3 is a sectional view of a conventional automatic bread maker. 20...Baking chamber, 21...Bread baking mold, 23...
... Kneaded blade, 26 ... Heater, 29 ... Heat shield plate,
31... Heat exhaust hole, 32... Baking lid.

Claims (1)

[Claims] 1. A heating device consisting of a baking chamber with a bread baking mold inside and a heater, a kneading device consisting of a bread baking mold and kneading blades that are transmitted and driven by a motor, an outer shell surrounding the heating device and kneading device, and a baking device. An automatic machine comprising a heat shield plate located between a chamber and an outer shell and surrounding a part of the firing chamber, and a heat exhaust hole communicating with outside air is provided in the upper part of the space between the heat shield plate and the outer shell. Bread machine.