JPH0360251B2 - - 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.

BACKGROUND ART A conventional automatic bread maker has a structure as shown in FIG. 4, for example (Japanese Patent Application Laid-Open No. 56-3028).

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 kneading, an insulated wound heater 5 placed outside the baking chamber 1 controls the temperature and time using a circuit 6 to perform fermentation and 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, but at this time the outer surfaces of the outer shell 8 and lid 9 become hot, and if a person accidentally touches them, they will get burnt. 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 shell 8 and the outer surface.

Problems to be Solved by the Invention However, in the configuration as shown in FIG.
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 insulating material 10 such as glass wool is expensive, and difficult to handle, such as by having to prepare a special room to maintain the insulating material 10 when assembling it, and because it can enter the lungs when breathing. However, there were problems in that the number of assembly steps was high and the price was high.

Means for Solving the Problems In order to solve these problems, the present invention arranges a heat shield plate between the baking chamber and the outer shell, and connects the upper part of the heat shield plate to the ceiling frame. In addition, the lower part is arranged between the chassis and the firing chamber to connect them.

Effect The effect of this technical means is as follows.
That is, by providing a heat shield between the firing chamber and the outer shell, the heat shield reflects the radiant heat that occurs as the temperature of the firing chamber increases, and the air layer between the firing chamber and the heat shield provides insulation. Thermal convection air drifts as the temperature of the heat shield increases, forming an air flow from the bottom that cools the outer surface of the heat shield and the inner surface of the outer shell, lowering the temperature of the outer shell. It is.

Furthermore, by forcing the surface of the heat shield plate to cool, it is possible to reduce the rise in temperature of the bread dough during kneading.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. In FIG. 1, reference numeral 11 denotes a chassis, and the outer body consists of a lower body 12 attached to the chassis 11 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,
The motor 14 is rotated by a small pulley 1 attached to the rotating shaft.
A large pulley 1 is rotatably attached to a bearing 17 press-fitted into the chassis 11 by a belt 16 running through the belt 16.
8, which rotates the lower connector 19 fixed to the large pulley 18 by caulking or the like. A bread baking mold 21 is located inside a baking chamber 20 whose bottom portion is fixed to a chassis 11, and its position is fixed by a bread baking mold stand 22. The bread baking mold 21 has the lower connector 1.
There is a kneading blade 23 detachably provided on the connector 22 which contacts the connector 9 and transmits rotation. Firing chamber 20
A heater 26, which is attached by screwing a fixed insulator 24 and a fixing metal fitting 25, and a sensor 27, which holds a thermistor inside, are attached to the side surface of the heater. The top frame 28 is attached to the upper body 13 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 installed in the baking chamber 2.
The upper part is inserted into the groove part 30 of the top frame 28 with a gap of about 3 to 10 mm from the outer surface of the top frame 28, and comes into contact with the end surface of the top frame 28 to prevent hot air from flowing out in the 13 directions above the body as much as possible. Further, the lower part of the heat shield plate 29 is bent and disposed between the chassis 11 and the firing chamber 20, and the firing chamber 20 and the chassis 11 are fixed by screwing together. The ceiling frame 2 is located in the upper part of the space between the heat shield plate 29, the lower body 12, and the upper body 13.
8 is provided with a heat exhaust hole 31 communicating with the outside air.

Further, a firing lid 32 forming a firing space above the firing chamber 20 is elastically attached to a lower lid 33, and the lower lid 33 is screwed to the upper lid 34. 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. At one end is a valve lever 37. A solenoid 38 is attached to the top of the lid 34, and a lever 39 is movably attached to the tip of the plunger, and when in operation, it comes into contact with the valve lever 37 to open the valve 36.

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 opens below the exhaust guide 40. Further, the baking lid 32 is provided with a steam hole 41 .

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 finished, the yeast 43 enters the dough and when the set time for completion has come, the solenoid 38 is activated and the valve 36 is opened, and the yeast 43 is transferred to the bread baking mold 2.
Fall within 1. The motor 14 rotates again to knead the materials. When the kneading is completed, the heater 26 is energized to control the temperature of the bread baking mold 21 for the first fermentation and second fermentation.
Next fermentation and forming fermentation proceed. During this fermentation, the motor 14 is slightly rotated to remove gas. After forming and fermenting, the fermented bread 44 is baked by energizing a motor 26, and when finished, a buzzer sounds to notify the completion, and everything from kneading to baking is automatically carried out, and the bread is made by simply adding the ingredients.

Here, place the heat shield plate 29 under the body, and place the heat shield plate 13 on the body.
The firing chamber 2 is provided between the firing chamber 20 and the firing chamber 20.
The radiant heat that accompanies the temperature rise due to the energization of the heater 26 is reflected by the heat shield plate 29, which is a metal plate with a surface coating with good reflection, and the air layer of 3 to 10 mm between the baking chamber 20 and the heat shield plate 29. In addition to insulating the heat shield plate 29, as the temperature of the heat shield plate 29 increases, an air flow is formed from the bottom due to drift due to thermal convection of air in the space between the lower body 12, the upper body 13, and the heat shield plate 29. The temperature of the surface of the body is cooled by the outside air sucked in from the bottom, and at the same time, the outside of the lower body 12 and the upper body 13 are also cooled to lower the temperature of the outside so that even if a person easily touches it, he will not get burned.

Further, by forced cooling of the surface of the heat shield plate 29, the temperature rise of the bread dough due to the frictional heat of 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, by simply inserting the upper part of the heat shield plate 29 into the groove of the ceiling frame 28, the gap between the firing chamber 20 and the heat shield plate 29 can be regulated, and the high temperature generated in the space between the firing chamber 20 and the heat shield plate 29 can be adjusted. By bringing the heat shield plate 29 and the ceiling frame 28 into contact with each other, the outflow of hot air can be suppressed as much as possible, and furthermore, assembly is easy. Furthermore, by bending the lower part of the firing chamber 29 and fixing it together between the firing chamber 20 and the chassis 11, the temperature of the heat shield plate 29 can be cooled by dissipating the heat of the heat shield plate 29 to the chassis 11, which has a large heat mass. In addition, it is possible to prevent chattering noise caused by vibrations of rotating parts such as the motor 14 and during kneading.Furthermore, since there are no screws for fixing the heat shield plate 29, assembly is easy, the number of parts is reduced, and the cost is low. be.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, a heat shield plate is disposed between the baking chamber and the outer shell, the upper part of the heat shield plate is connected to the ceiling frame body, and the lower part of the heat shield plate is connected to the ceiling frame body. Since the shell is placed between the chassis and the firing chamber, it is possible to reduce the temperature of the outer shell with a simple configuration and obtain highly safe products that do not cause burns even when touched easily by people. It is possible. In addition, by cooling the dough temperature rise during kneading is reduced, the kneading time is extended, and well-kneaded bread dough is produced, resulting in 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, and FIG. 2 is a partial sectional view of an embodiment of the present invention.
FIG. 3 is also a local sectional view of an embodiment of the present invention,
FIG. 4 is a sectional view of a conventional automatic bread maker. 14...Motor, 20...Baking chamber, 21...Bread baking mold, 23...Kneading blade, 26...Heater,
28...Top frame, 29...Heat shield plate, 30...Groove,
31... Heat exhaust hole, 32... Baking lid, 33... Lid bottom, 34... Lid top.

Claims (1)

[Claims] 1. A baking chamber with a bread baking mold inside, a heating device composed of a heater, a kneading device composed of a bread baking mold and kneading blades that are transmitted and driven by a motor, and an outer box surrounding the heating device and kneading device. , a heat shield that surrounds a part of the firing chamber between the firing chamber and the outer shell, a ceiling frame that is located at the top of the firing chamber and connects the firing chamber and the outer shell, and a chassis that fixes the firing chamber at the bottom. an upper part of the heat shield plate is coupled to the ceiling frame body, and a lower part of the heat shield plate is disposed between the baking chamber and the chassis, and the coupling between the baking chamber and the chassis Fixed automatic bread maker.