JP3880535B2 - Bread machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a simple automatic bread baking machine used in general households.
[0002]
[Prior art]
This type of bread baking machine is provided with a rotating shaft for rotating blades and a kneading blade attached to this at the inner bottom of the bread case for kneading, fermentation and baking of the bread material, and at the inner bottom of the main body for storing the bread case, It is equipped with a rotation drive unit that drives the rotation axis of the bread case and a heater that heats the bread dough in the bread case, weighs various materials and puts them in the bread case, and after storing the bread case inside the main body, Operate the keys on the operation unit to set the baking, set the timer, etc., and then press the start button, the microcomputer controls the rotation drive unit, heater, etc. according to the required program, pan case The bread material is kneaded to make dough, which is fermented and baked to automatically bake the bread.
[0003]
By the way, as a conventional home baking machine, publicly known documents cannot be specifically mentioned, but the kneading blade attached to the rotating shaft at the bottom of the pan case is a blade attaching portion that is removably fitted to the rotating shaft. From a flat blade-like main body projecting in a substantially radial direction, or a part thereof with a slight angle. Thus, when kneading bread dough, the bread material is kneaded by the rotating action of the kneading blades, while the movement of cutting and joining the bread material between the tip of the rotating blade body and the inner wall surface of the bread case is repeated. As a result, it was impossible to produce a high-quality fabric with elasticity and waist.
[0004]
Also, in conventional bread baking machines, when kneading bread materials, the kneading blades are rotated in only one direction for kneading, so the dough lump during kneading circulates in the pan case in the same pattern. In particular, in the case of a rectangular bread case with a transverse cross section, it is difficult to produce a high-quality dough with elasticity, and a part of the dough remains attached to one of the four corners of the bread case. There was a problem that it left a scar on the baked bread and reduced the commercial value of the bread.
[0005]
In the case of the rectangular bread case 4 having a transverse cross section, when a material such as flour is mixed with water, they become a lump of dough, and the lump rotates around the bread case while rotating. However, this dough lump is temporarily retained while rotating at one corner (first corner) in the bread case, and then passed without being temporarily retained at the next corner (second corner). A pattern of temporarily staying again at the next corner (third corner), passing through the next corner (fourth corner) without temporarily staying, and returning to the original corner (first corner) and staying temporarily. repeat. In this case, the lump of dough stays in the corner while rotating, thereby giving elasticity to the dough and cleaning the corner wall surface of the pan case. Since it stays only at the corners, a sufficiently high-quality dough with sufficient elasticity cannot be obtained, and the semi-kneaded material adhered in the initial stage of kneading will remain until the end.
[0006]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a bread baking machine that can form a sufficiently high-quality dough and that the dough material does not remain on the inner wall surface of the bread case. .
[0007]
[Means for Solving the Problems]
As can be seen from FIG. 5 and FIG. 6 , the invention according to claim 1 is provided with a rotating shaft 7 and a kneading blade 8 attached to this at the inner bottom of a bread case 4 for kneading, fermenting and baking bread materials. The kneading blade 8 is rotated in a bread baking machine in which a rotary drive unit 5 for driving the rotary shaft 7 and a heater 6 for heating the bread dough in the bread case 4 are provided at the inner bottom of the main body 1 for storing the bread case 4. A blade body 13 projecting from a blade mounting portion 12 that is detachably fitted to the shaft 7 and pivotally attached to the tip of the blade body 13 so as to be inclined at 90 ° to 120 ° to the left and right with respect to the blade body 13. The kneading blade 8 is configured to rotate forward and reverse when the bread material is kneaded .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an external perspective view of a bread baking machine according to the present invention, FIG. 2 is a plan view of the inside of the main body 1 with the lid 2 removed, and FIG. 3 stores the bread case 4 in the main body 1 with the lid 2 opened. FIG. 4 is a perspective view showing an outer bottom portion of the bread case 4, FIG. 5 is a perspective view showing the pan case 4 and the kneading blade 8, and FIG. 6 explains the operation of the kneading blade 8. It is a top view of the bread case 4 to do. This bread baking machine has a lid 2 attached to an opening O of a main body 1 so as to be freely opened and closed, and an operation unit 3 is provided on the main body 1 on one side of the lid 2.
[0010]
As shown in FIG. 3, a bread case 4 having a rectangular cross section for kneading, fermenting and baking bread materials is detachably inserted into the main body 1, and the kneading device is rotated below the insertion portion. A heater 6 for heating the bread dough in the part 5 and the bread case 4 is provided (see FIG. 2). Further, as shown in FIG. 5, a rotary shaft 7 and a kneading blade 8 that is detachably attached to the rotary shaft 7 are provided on the inner bottom portion of the pan case 4, and the rotary shaft 7 attaches the pan case 4 to the main body 1. When it is inserted inside, it is linked and connected to the rotation drive unit 5 on the main body 1 side. Although not shown, the rotation drive unit 5 is connected to a motor that can rotate forward and backward.
[0011]
As shown in FIG. 4, a rotating body 9 fixed to the lower end portion of the rotating shaft 7 protrudes on the lower surface side of the pan case 4, and a pair of transmission pieces 10, 10 are arranged on the rotating body 9 on the outer side in the diameter direction. Both transmission pieces 10, 10 are brought into contact with the drive pieces 11, 11 of the rotation drive unit 5 when the pan case 4 is inserted into the main body 1, so that the rotation of the rotation drive unit 5 is rotated on the rotation shaft 7. I have come to tell you.
[0012]
As shown in FIGS. 5 and 6, the kneading blade 8 includes a blade body 13 that protrudes radially outward from a blade mounting portion 12 that is detachably fitted to the rotary shaft 7, and the blade body 13. On the other hand, it is comprised from the inclined blade | wing 14 pivotally attached to the front-end | tip part of the blade | wing main body 13 so that it may incline with the same inclination | tilt angle (theta) on either side, respectively. The inclined blade 14 is pivotally attached to the tip of the blade body 13, and when the rotating shaft 7 rotates clockwise as indicated by the solid line arrow in FIG. Is rotated in the counterclockwise direction indicated by the phantom line arrow in FIG. 6, it is held at the phantom line illustrated position in the same figure. The inclination angle θ formed by the blade body 13 and the inclined blade 14 is about 100 °.
[0013]
As shown in FIGS. 5 and 6, the inside of the bread case 4 is composed of an inner bottom wall surface 15, front and rear inner wall surfaces 16, 17, and left and right inner wall surfaces 18, 19, and four corners thereof, that is, four corner portions C1. -C4 are each formed in a round shape, and arc-shaped ridges 16a and 17a are formed at the central portions of the front and rear inner wall surfaces 16 and 17, respectively. As can be seen from FIG. 6, the inclined blade 14 of the kneading blade 8 approaches the front and rear inner wall surfaces 16 and 17 of the pan case at 2 to 10 mm, preferably 4 to 5 mm when rotating. Provided.
[0014]
The heater 6 for heating the motor of the rotational drive unit 5 and the bread dough in the bread case 4 is controlled by a microcomputer (not shown). Although not shown, the operation unit 3 includes a display unit that displays a plurality of courses such as “bread bread”, “soft bread”, “French bread”, and a microcomputer that stores recipes corresponding to each of the bread baking courses. A course key for selecting the course, a baking key for selecting baking, a timer key for setting a timer, a start / cancel key for instructing start and stop of bread making, and the like. In FIG. 1, reference numeral 20 denotes a power plug that extends from the main body 1.
[0015]
In using the bread baking machine configured as described above, first, after putting the required bread ingredients in the bread case 4, the bread case 4 is inserted and set inside the main body 1, the lid 2 is closed, Then, the plug 20 is inserted into the outlet. Then, the course key of the operation unit 3, for example, “bread” is pressed, and then the start key is pressed to start.
[0016]
When the start key is pressed, the kneading blade 8 is first inclined clockwise, for example, by driving the rotary drive unit 5, and this inching is performed for about 3 to 4 minutes to knead the bread material powder and water. However, the dough lump D is gradually formed. The kneading state by the right rotation of the kneading blade 8 will be described with reference to FIG. 6. The dough lump D is temporarily retained while rotating at, for example, the first corner C1 in the rectangular bread case 4 in the cross section, and then the next second. It passes without temporarily staying at corner C2, temporarily stays again at the next third corner C3, and further passes through the next fourth corner C4 without staying temporarily, and returns to the first corner C1 and stays temporarily. Repeat the pattern. This is a peculiar pattern when the cross-sectional shape of the pan case 4 is a rectangle.
[0017]
In this case, the inclined blade 14 of the kneading blade 8 is held in a posture inclined to the left as shown by the solid line in FIG. 6 as the blade body 13 rotates clockwise. Thus, the dough kneaded by the kneading blade 8 is sandwiched between the inclined blades 14 of the kneading blade 8 and the front and rear inner wall surfaces 16 and 17 (particularly the protrusions 16a and 17a) of the pan case 4. By the taper effect, the fabric is stretched thinly while being compressed without being cut. The dough thinly stretched in this way forms one lump D while being overlapped and wound around each other at the first corner C1 to the fourth corner C4.
[0018]
As in the kneading blade 8 of this embodiment, when the inclination angle θ formed by the blade body 13 and the inclined blade 14 is about 100 °, the dough is formed between the front and rear inner wall surfaces 16 and 17 of the pan case 4. The taper effect by the inclined blades 14 is most effectively exhibited when the sheet is sandwiched, thereby producing an extremely high quality fabric having sufficient elasticity and stickiness and pulling. Specifically, when the inclination angle θ is about 100 °, the binding of gluten, which is the main component of wheat protein, that is, the binding of gliadin, glutenin, etc., which are constituents of gluten, is improved. When fermented and baked, the bubbles formed inside the bread become smaller and the film formed between the bubbles becomes thinner, resulting in sufficient elasticity and a crunchy very delicious bread Become. When the inclination angle θ is 90 ° or less, the taper effect by the inclined blades 14 is almost lost, the compression action is weak, and sufficient elasticity cannot be obtained. Further, when the inclination angle θ is 120 ° or more, the bread dough is cut between the tip end portion of the inclined blade 14 and the inner wall surfaces 16 and 17 of the bread case 4 in the same manner as in the conventional kneading blade, so that there is elasticity. A high quality dough is no longer produced.
[0019]
Thus, the dough lump D formed while the dough thinly stretched as described above overlaps and wraps around each other at the first corner C1 to the fourth corner C4 is a kneading blade indicated by a solid arrow in FIG. 8, the lump D itself rotates clockwise while rotating around the inside of the pan case 4 clockwise. During this clockwise rotation, the ridges 16a and 17a of the front and rear inner wall surfaces 16 and 17 are first rotated. It passes through the corner and stays while rotating at the next corner, that is, the first corner C1 and the third corner C3. In this way, the dough lump D rotating around in the bread case 4 stays at the corner, so that it becomes elastic bread dough and the corner wall surface is cleaned by the rotating action of the lump D. Become.
[0020]
As described above, the dough lump D rotates by the right rotation of the kneading blade 8 and rotates around the inside of the rectangular bread case 4 in the rectangular cross section, for example, clockwise for 7 minutes, and then the rotation drive unit 5 rotates counterclockwise. By switching, the kneading blade 8 rotates counterclockwise as indicated by the phantom arrow in FIG. At the time of this counterclockwise rotation, the inclined blade 14 of the kneading blade 8 is tilted to the right as shown by the phantom line in FIG. 6 as the blade body 13 rotates counterclockwise. During this counterclockwise rotation, the dough lump D passes through the first corner from the ridges 16a, 17a of the front and rear inner wall surfaces 16, 17, and passes through the first corner, the second corner C2 and the fourth corner C4. Each stays while rotating. Thus, when the kneading blade 8 rotates counterclockwise around the inside of the pan case 4 while rotating the dough lump D, for example, counterclockwise for 4 minutes, the rotation drive unit 5 stops driving and the kneading blade 8 finishes kneading the dough. To do.
[0021]
As the kneading blade 8 performs forward rotation and reverse rotation for each required time as described above, the dough lump D rotating around while rotating is retained in any corner from the first corner C1 to the fourth corner C4. Therefore, sufficient elastic force is imparted to the dough to form a high-quality bread dough with stickiness and pulling, and at the same time, the corners C1 to C4 perform the rotating action of the lump D during the stay. As a result of sufficient reception, the wall surfaces of the corners are cleaned cleanly, so that the semi-kneaded material adhered in the initial stage of kneading does not remain until the end.
[0022]
The switching operation and time of the kneading blade 8 in the left-right rotation direction as described above are arbitrarily set in advance in the operation unit 3. Further, when the rotation direction of the kneading blade 8 is switched, the inclined blade 14 swings from the inclined position indicated by the solid line to the inclined position indicated by the phantom line in FIG. 5, and the inclined position indicated by the solid line from the inclined position indicated by the phantom line However, if this operation is performed at a position close to the ridges 16a and 17a of the inner wall surfaces 16 and 17, as shown in FIG. 6, the inclined blades 14 will be in contact with the ridges 16a and 17a and hinder them. Therefore, when switching the rotation direction of the kneading blade 8, the stop position of the kneading blade 8 must be on the side facing the left and right inner wall surfaces 18, 19 that do not interfere with the swinging of the inclined blade 14. The motor is controlled by a microcomputer.
[0023]
When the kneading operation by the kneading blade 8 as described above is completed and a predetermined dough is completed, the bread dough is fermented for a certain period of time, baked after the fermentation, and baked.
[0024]
According to the bread baking machine described above, the kneading blade 8 is protruded from the blade mounting portion 12 that is detachably fitted to the rotating shaft 7, and the blade body 13 is 90 ° to 120 ° to the left and right with respect to the blade body 13. And the inclined blade 14 pivotally attached to the tip of the blade body 13 so as to be inclined at the same time, and when the bread material is kneaded, the kneading blade 8 The forward rotation and the reverse rotation of the dough are alternately performed for each required time, so that the dough lump D rotating around while rotating inside the bread case 4 is any corner from the first corner C1 to the fourth corner C4. However, it is possible to stay, whereby sufficient elastic force is applied to the dough to form a high-quality bread dough with stickiness and pulling, and at the same time, each corner C1 to C4 rotates when the lump D stays. Fully affected As a result, the wall surfaces of the corners C1 to C4 are cleaned cleanly, so that the semi-kneaded material adhering at the initial stage of kneading does not remain until the end, and the commercial value of bread is not reduced. .
[0025]
The kneading blade 8 can most effectively exert the compression action on the dough when the angle θ formed by the blade body 13 and the inclined blade 14 is set to 95 ° to 105 °. A more preferable angle θ is about 100 ° as described above. However, the range of 90 ° to 120 ° is effective. Further, the kneading blade 8 is provided so that the tip of the inclined blade 14 is close to the ridges 16a and 17a of the front and rear inner wall surfaces 16 and 17 of the pan case 4 as shown in FIG. Combined with the taper action of the blades 14, the action of compressing the dough works more effectively, and the dough can be kneaded more effectively.
[0030]
【The invention's effect】
The bread baking machine of the invention according to claim 1 is characterized in that the kneading blade is pivotally attached to the blade body and the tip of the blade body so as to be inclined at 90 ° to 120 ° to the left and right with respect to the blade body. And the rotation drive unit is a drive unit that can rotate forward and reverse, and when kneading bread material, the kneading blades are rotated forward and reverse so that the inside of the bread case rotates. The lump of dough that circulates can stay in any corner from the first corner to the fourth corner, thereby giving sufficient elastic force to the dough, so that a high-quality bread dough with stickiness and pulling can be obtained. At the same time, the corners are fully subjected to the rotating action when the lumps stay, so that the walls of each corner can be cleaned cleanly. It will remain until There is no such thing as it does not reduce the value of bread.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a bread baking machine according to the present invention.
FIG. 2 is a plan view of the inside of the main body with the lid removed.
FIG. 3 is a perspective view showing a state in which the pan case is to be stored in the main body with the lid opened.
FIG. 4 is a perspective view showing an outer bottom portion of a pan case.
FIG. 5 is a perspective view showing a pan case and a kneading blade.
FIG. 6 is a plan view of a rectangular bread case having a transverse cross section for explaining the operation of the kneading blades of the baking machine.

Claims (1)

A rotation shaft and a kneading blade attached to the rotating shaft are provided at the inner bottom of the bread case for kneading, fermentation and baking of bread material, and a rotation driving unit and a bread case for driving the rotating shaft at the inner bottom of the main body for storing the bread case In a baking machine provided with a heater for heating the dough inside, a kneading blade is protruded from a blade mounting portion that is detachably fitted to a rotating shaft, and 90 ° to the left and right with respect to the blade body. It is composed of an inclined blade pivotally attached to the tip of the blade body so as to be inclined at 120 °, and when kneading bread material, the kneading blade is rotated forward and reverse. Bread baking machine.

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