JP6299444B2 - Home bakery - Google Patents

Description

  The present invention relates to a home bakery technique, and more particularly to a technique for controlling the number of rotations of blades housed in a hopper of a home bakery.

  2. Description of the Related Art Conventionally, a technique related to a home bakery (automatic bread maker) that kneads a dough contained in a hopper and heats the dough stepwise to bake bread is known (see, for example, Patent Document 1 and Patent Document 2). ).

JP 2008-1113988 A JP 2007-307030 A

  In the automatic bread maker disclosed in Patent Document 1 and Patent Document 2, the tension of the belt that transmits the drive of the motor to the blades is detected, and the rotational drive of the blades in the automatic bread maker is based on this detection information. Techniques for controlling the are described. However, in such a conventional technology, it is measured at what rotational speed the blade shaft of the blade rotating inside the hopper is actually rotating, and the automatic bread maker is controlled based on the rotational speed. It was not the composition to do. That is, the configuration is not such that the blades are rotationally controlled in accordance with the actual fabric kneading condition.

  The present invention has been made in view of the situation as described above, and measures the rotational speed of the blade shaft, and controls the rotational drive of the blade based on the rotational speed to cope with the actual fabric kneading condition. It is intended to provide a home bakery that can be controlled.

In claim 1, a hopper capable of accommodating the dough inside, a blade standing upright about the blade shaft at the bottom of the hopper, and a side portion in a horizontal direction with respect to the blade shaft By adjusting the voltage applied to the DC motor by adjusting a voltage applied to the DC motor, a DC motor in which the main shaft is disposed, a drive mechanism for transmitting the rotation of the main shaft of the DC motor to the blade shaft and rotating the blade. Control means for controlling the rotational speed of the main shaft, the blade shaft is provided with rotational speed measurement means for measuring the rotational speed of the blade shaft, and the control means is measured by the rotational speed measurement means. The voltage applied to the DC motor is set based on the rotation speed of the blade shaft, and the rotation speed of the blade shaft measured by the rotation speed measuring means and the rotation speed of the main shaft of the DC motor are calculated. Operation Based on the result, and sets the voltage applied to the DC motor.

  Thereby, the home bakery can be controlled in accordance with the actual kneading state of the dough by controlling the rotation of the blade based on the rotation speed of the blade shaft measured by the measuring means.

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According to a second aspect of the present invention, the rotational speed of the main shaft of the DC motor is calculated based on the voltage applied to the DC motor by the control means immediately before the calculation.

  As a result, the home bakery can be controlled in accordance with the actual kneading state of the dough. Specifically, when there is a difference of a predetermined value or more between the rotational speed of the blade shaft measured by the measuring means and the rotational speed of the main shaft of the DC motor calculated based on the voltage applied to the DC motor, the blade Can be adjusted.

According to a third aspect of the present invention, the DC motor is provided with motor rotation number measuring means for measuring the rotation speed of the spindle, and the measured value measured by the motor rotation speed measuring means is used as the rotation speed of the spindle of the DC motor. It is what.

  As a result, the home bakery can be controlled in accordance with the actual kneading state of the dough. Specifically, when there is a difference of a predetermined value or more between the rotational speed of the blade shaft measured by the measuring means and the rotational speed of the main shaft of the DC motor measured by the motor rotational speed measuring means, the rotational driving of the blade is performed. Can be adjusted.

According to a fourth aspect of the present invention, there is provided a cooling fan that cools the inside of the hopper by being controlled by the control means, and the control means controls driving of the cooling fan based on the calculation result. It is.

  As a result, the home bakery can be controlled in accordance with the actual kneading state of the dough. Specifically, when the rotation speed of the blade shaft measured by the measuring means and the rotation speed of the main shaft of the DC motor are compared and it is determined that the temperature of the dough is high, the cooling fan is driven to move the inside of the hopper. Can be cooled.

According to a fifth aspect of the present invention, the hopper is formed in a rectangular shape in a plan view, and the rotational speed measuring means includes a rotary plate in which a slit is formed and disposed relatively undisplaceable with respect to the blade shaft, and the slit And a slit detecting means for detecting the position of the blade at every 90 degrees relative to the blade axis. It is.

  Thereby, the rotation speed of a blade axis | shaft can be measured in detail by a measurement means corresponding to the shape of a hopper.

  The home bakery according to the present invention has an effect that it can be controlled in accordance with the actual kneading state of the dough by controlling the rotational driving of the blade based on the rotational speed of the blade shaft measured by the measuring means.

Side surface sectional drawing which shows the whole structure of a home bakery. (A) is a top view which shows a hopper, a blade | wing, a motor, and a dough sensor, (b) is a perspective view which shows the stirring part of a hopper and a blade | wing. Block diagram of home bakery. The top view which shows a rotating plate and a rotation speed sensor.

  Below, the whole structure of the home bakery 1 which is one Embodiment of the home bakery which concerns on this invention is demonstrated.

  In the following, for convenience of explanation, the “up and down direction of the home bakery 1” is defined with the direction of the arrow U shown in FIG. Further, the “front-rear direction of the home bakery 1” is defined with the direction of the arrow F shown in FIG. Then, the “left-right direction of the home bakery 1” is defined with the arrow L direction shown in FIG.

  The home bakery 1 is for kneading dough and heating the dough step by step to bake bread. As shown in FIG. 1, the home bakery 1 includes a main body 10, a hopper 20, a blade 30, a drive mechanism 40, a motor 50, a heater 60, a fan 70, a dough sensor 80, a storage sensor 90, and the like.

  The main body 10 includes an outer case 11, an inner case 12, a shoulder member 13, a lid body 14, and a hopper accommodating portion 15.

  The outer case 11 has an upper surface opened and a lower surface closed, and is formed in a substantially rectangular shape in plan view. The outer case 11 constitutes an outer wall and a bottom wall of the home bakery 1, and accommodates the hopper accommodating portion 15, the drive mechanism 40, and the like inside.

  The inner case 12 is composed of a plurality of substantially plate-like members, and is attached to the inner side of the outer case 11. The inner case 12 constitutes the inner wall of the home bakery 1.

  The shoulder member 13 has a front end portion fixed to the upper end portion of the front side portion of the outer case 11, and a rear end portion fixed to the upper end portion of the inner case 12 to join the upper end portions of the outer case 11 and the inner case 12. .

  The rear end portion of the lid body 14 is supported via a hinge attached to the upper end portion of the rear side portion of the outer case 11. The lid 14 is configured to be openable and closable with respect to the main body 10.

  The hopper accommodating portion 15 is a container having a substantially rectangular shape in plan view and capable of accommodating the hopper 20 and the heater 60 inside. The upper end part of the hopper accommodating part 15 is connected with the cover body 14, and is comprised with the cover body 14 so that opening and closing is possible.

  The hopper 20 is a container whose upper surface is open and whose lower surface is closed, and allows the dough (bread ingredients) to be accommodated therein. The hopper 20 is disposed on the rear side of the main body 10.

As shown in FIG. 2A, the hopper 20 of the present embodiment is formed in a rectangular shape in plan view. That is, the bottom 20a of the hopper 20 is formed in a substantially rectangular shape such that the long sides 20b facing each other and the short sides 20c facing each other are alternately orthogonal.
When the hopper 20 is attached to the main body 10, the long side 20b of the bottom part 20a of this embodiment becomes parallel with respect to the left-right direction. Further, the short side 20 c of the bottom portion 20 a is parallel to the front-rear direction when the hopper 20 is attached to the main body 10.
Front and rear ribs 20d and 20e are formed on the side portions (front side portion and rear side portion) of the hopper 20 as described above.

As shown in FIGS. 2A and 2B, the front and rear ribs 20 d and 20 e are portions that protrude toward the inside of the hopper 20, from the bottom 20 a of the hopper 20 to the upper and lower middle portions of the hopper 20. , Extending along the vertical direction. That is, the gap between the hopper 20 and the blades 30 is partially narrowed by the front and rear ribs 20d and 20e.
The rear rib 20d is formed slightly to the right of the left and right central portion of the hopper 20 in plan view. The front rib 20e is formed slightly on the left side of the left and right center portion of the hopper 20 in plan view.

  As shown in FIG. 1, such a hopper 20 is detachably attached to the main body 10 via a coupling member 21 attached to the lower surface.

  The blades 30 are for kneading the dough. As shown in FIGS. 1 and 2A, the blade 30 is formed with a base end portion 31 and a stirring portion 32. The blade 30 is erected at the bottom of the hopper 20 so as to be rotatable around a blade shaft 41 described later.

The base end portion 31 is a substantially cylindrical portion having a lower end opening in a substantially circular shape, an upper end opening in a substantially semicircular shape, and penetrating along the vertical direction from the lower end to the upper end. A blade shaft 41 of a drive mechanism 40 to be described later is inserted into the base end portion 31 through an opening at the lower end portion, and is supported by the blade shaft 41 so as to be able to rotate integrally with the blade shaft 41.
Thereby, the blade | wing 30 is standingly arranged by the bottom part 20a of the hopper 20 so that rotation is possible.

  The stirring portion 32 is a substantially plate-like portion extending from the base end portion 31 in the direction toward the side surface (front side surface in FIG. 1) and the upward direction of the hopper 20.

  The drive mechanism 40 transmits the rotation of the main shaft 51 of the motor 50 to the blade 30 to rotate the blade 30. The drive mechanism 40 includes a blade shaft 41, a bearing 42, a driven clutch 43, a drive clutch 44, a rotating shaft 45, a bearing 46, a large pulley 47, a fan belt 48, a small pulley 49, and the like.

  The blade shaft 41 is an shaft having an outer diameter substantially the same as the inner diameter of the opening at the base end portion 31 of the blade 30. The upper end portion of the blade shaft 41 protrudes toward the inside of the hopper 20 from an opening formed at the center portion of the bottom portion 20 a of the hopper 20 and partially abuts on the upper end portion of the base end portion 31. Thus, the blade 30 can rotate integrally with the blade shaft 41. A driven clutch 43 is attached to the lower end portion of the blade shaft 41.

  The bearing 42 rotatably supports the blade shaft 41 so that the axial direction of the blade shaft 41 is parallel to the vertical direction.

The driven clutch 43 is configured to be engageable with the drive clutch 44. The driven clutch 43 engages with the drive clutch 44 when the hopper 20 is attached to the main body 10.
The blade shaft 41, the bearing 42, and the driven clutch 43 are integrally attached to the hopper 20 via the coupling member 21 and the like.

  The drive clutch 44 is supported on the upper end portion of the rotation shaft 45. The rotation of the rotating shaft 45 is transmitted to the blade shaft 41 by the rotation of the rotating shaft 45 with the driven clutch 43 and the drive clutch 44 engaged.

  The rotating shaft 45 is rotatably supported by the bearing 46 and is disposed concentrically with the blade shaft 41.

  The bearing 46 is supported by the inner case 12 via a predetermined connecting member, and is disposed below the bearing 42 that supports the blade shaft 41.

  The large pulley 47 is attached to the lower end portion of the rotating shaft 45 and rotates integrally with the rotation of the rotating shaft 45.

  The fan belt 48 has a rear end portion wound around the large pulley 47 and a front end portion wound around the small pulley 49. That is, the fan belt 48 connects the large pulley 47 and the small pulley 49.

  The small pulley 49 is attached to the lower end of the main shaft 51 of the motor 50 and rotates integrally with the rotation of the main shaft 51 of the motor 50.

  The motor 50 is a DC motor having an upper end supported by the inner case 12 and disposed on the front side of the main body 10. A main shaft 51 of the motor 50 extends downward from the motor 50 and is positioned in front of and below the hopper 20. The rotational speed of the spindle 51 of the motor 50 can be changed by adjusting the voltage applied to the motor 50 via the motor drive circuit 106 by the microcomputer 100 as the control means. The motor 50 is provided with a motor rotation speed sensor 50a which is a motor rotation speed measuring means for measuring the rotation speed of the main shaft 51.

  In this way, the main shaft 51 is disposed at a position where the axis is separated in at least one of the front-rear direction and the left-right direction with respect to the center of the bottom 20 a of the hopper 20. That is, the main shaft 51 is disposed on the side portion in the horizontal direction with respect to the center of the bottom portion 20 a of the hopper 20.

The motor may be disposed at least at a part of the main shaft at the lateral side with respect to the center of the bottom of the hopper.
That is, when the main shaft extends in the front-rear direction from the motor, one end in the axial direction is separated from the center of the bottom of the hopper. In such a case, the motor may be arranged at any position.

As shown in FIG. 1, when the motor 50 operates and the main shaft 51 rotates, the drive mechanism 40 rotates the rotation shaft 45 via the fan belt 48 and the like, and the rotation of the rotation shaft 45 is driven by the drive clutch 44 and This is transmitted to the blade shaft 41 via the driven clutch 43.
As a result, the blade shaft 41 rotates, and the blade 30 rotates as the blade shaft 41 rotates. In the present embodiment, the blade 30 is configured to rotate clockwise in plan view.

  The home bakery 1 according to the present embodiment includes a rotating plate 52 and a photo interrupter 53 that is a slit detecting unit as a rotational speed measuring unit that measures the rotational speed of the blade shaft 41. As shown in FIG. 4, the rotating plate 52 is formed with four slits 52 a so as not to be relatively displaced with respect to the blade shaft 41. That is, the rotating plate 52 rotates clockwise together with the blade shaft 41 and the blade 30 (see arrow R in FIG. 4). A photo interrupter 53 that is a slit detecting means detects the slit 52 a of the rotating plate 52. Specifically, the photo interrupter 53 has a light emitting unit and a light receiving unit that are vertically opposed to each other, and detects the presence or position of the object by detecting that the object blocks the light from the light emitting unit. In the present embodiment, the rotational speed of the rotating plate 52 and the blade shaft 41 is measured by detecting the light emitted from the light emitting portion of the photo interrupter 53 and passing through the slit 52a by the light receiving portion. In the present embodiment, the slits 52a are formed on the rotating plate 52 every 90 degrees. Thus, the photo interrupter 53 can detect the position of the blade 30 every 90 degrees with respect to the blade shaft 41 (that is, the position of the blade 30 in the hopper 20).

  The heater 60 heats the hopper 20 to ferment the dough or to bake bread. The heater 60 is supported on the inner surface of the hopper accommodating portion 15. The heater 60 is disposed at a position where it does not come into contact with the hopper 20 when the hopper 20 is attached to the main body 10.

The fan 70 is a cooling fan for suppressing the temperature rise of the fabric. The fan 70 is attached to the main body 10 via the duct 71 and is disposed on the front side of the main body 10. The fan 70 is located above the motor 50 and is located in front of the hopper 20. The fan 70 supplies cooling air to the outside of the hopper accommodating portion 15 through the duct 71. Fan 70
Control is performed by the microcomputer 100, which is a control means, adjusting the voltage applied to the fan 70 via the fan drive circuit 108.

  The dough sensor 80 measures the temperature of the dough at the bottom 20a of the hopper 20. The fabric sensor 80 is supported by the inner case 12 and the hopper accommodating portion 15. The upper end portion of the dough sensor 80 protrudes upward from the opening formed on the right rear side at the bottom of the hopper accommodating portion 15.

  As shown in FIGS. 2A and 3, when the hopper 20 is attached to the main body 10, the upper end portion of the fabric sensor 80 comes into contact with the right rear side of the bottom portion 20 a of the hopper 20. That is, the fabric sensor 80 is disposed at the right rear corner of the bottom 20 a of the hopper 20.

  As shown in FIG. 1, the in-compartment sensor 90 measures the temperature in the hopper accommodating part 15 (hereinafter referred to as “inside”). The in-compartment sensor 90 is attached to the front side surface of the hopper accommodating portion 15.

  Next, operation control of the home bakery 1 will be described with reference to FIG.

The home bakery 1 appropriately operates the motor 50, the heater 60, the fan 70, and the like by an input signal to the microcomputer 100 serving as a control means and a control signal from the microcomputer 100.
The microcomputer 100 stores in advance a control program for executing the functions of the home bakery 1, a relationship map between time and temperature, and the like.

  The microcomputer 100 includes a noise filter circuit 101, a ZC circuit 102 (zero cross circuit), a rectifying / smoothing circuit 103, a DC12V power supply 104, a power supply circuit 105, a motor drive circuit 106, a heater drive circuit 107, a fan drive circuit 108, a buzzer on the power supply side. A drive circuit 109, a solenoid drive circuit 110, and the like are connected.

The microcomputer 100 receives input signals from the fabric sensor 80, the inside sensor 90, the ZC circuit 102, the power supply circuit 105, the various switches 111 to 118, the photo interrupter 53, and the motor rotation speed sensor 50a.
The microcomputer 100 performs various arithmetic processes based on the input signals, and sends control signals to the motor drive circuit 106, the heater drive circuit 107, the fan drive circuit 108, the buzzer drive circuit 109, the solenoid drive circuit 110, the LCD 119, and the operation LED 120. Output.

  Thereby, the microcomputer 100 operates the motor 50, the heater 60, the fan 70, the buzzer 121, and the solenoid 122, displays characters on the LCD 119, and turns on the operation LED 120.

Next, the operation of the home bakery 1 will be described.
The home bakery 1 bakes bread by sequentially performing a kneading process, a primary fermentation process, a secondary fermentation process, and a baking process.

  In the kneading process, the home bakery 1 operates the heater 60 so that the temperature inside the box measured by the inside sensor 90 can maintain the temperature set in the kneading process.

In the kneading process, the home bakery 1 operates the motor 50 to rotate the blades 30 in the clockwise direction in plan view, and stirs the dough by the stirring unit 32. Thereby, the home bakery 1 kneads the dough. At this time, the microcomputer 100 controls the rotation speed of the main shaft 51 of the motor 50 by adjusting the voltage applied to the motor 50 via the motor drive circuit 106.
At this time, the motor 50 operates intermittently such that it operates for a predetermined time (for example, several seconds), then stops, and then operates for a predetermined time.
As a result, the home bakery 1 rotates the dough in the hopper 20 and stretches, pushes, or inverts the dough.

After the kneading process is completed, the home bakery 1 performs the primary fermentation process.
In the primary fermentation process, the home bakery 1 operates the heater 60 so that the temperature in the refrigerator can be maintained at the temperature set in the primary fermentation process. Further, in the primary fermentation process, the home bakery 1 stops the motor 50 and the fan 70.

After the primary fermentation process is completed, the home bakery 1 performs the secondary fermentation process.
In the secondary fermentation process, the home bakery 1 operates the heater 60 so that the temperature in the cabinet can be maintained at the temperature set in the secondary fermentation process. In the secondary fermentation process, the home bakery 1 continues to stop the motor 50 and the fan 70.
By performing such a primary fermentation process and a secondary fermentation process, the home bakery 1 forms and ages the dough.

After the secondary fermentation process is completed, the home bakery 1 performs the baking process.
In the baking process, the home bakery 1 operates the heater 60 so that the internal temperature can be maintained at the temperature set in the baking process. Further, in the baking process, the home bakery 1 continues to stop the motor 50 and the fan 70.
By performing such a baking process, the home bakery 1 bakes bread.

  The microcomputer 100 in the home bakery 1 according to the present embodiment sets a voltage to be applied to the motor 50 based on the rotational speed of the blade shaft 41 measured by the rotating plate 52 and the photo interrupter 53 in the kneading process. Specifically, the microcomputer 100 calculates the number of rotations of the main shaft 51 of the motor 50 based on the voltage applied to the motor 50 by the microcomputer 100. Then, the rotational speed of the blade shaft 41 measured by the rotating plate 52 and the photo interrupter 53 and the rotational speed of the main shaft 51 of the motor 50 calculated immediately before are compared and calculated. For example, when the rotational speed of the blade shaft 41 is different from a numerical value calculated from the rotational speed of the main shaft 51 by a predetermined value or more, the rotational speed of the main shaft 51 of the motor 50 is adjusted. Specifically, when the rotational speed of the blade shaft 41 is smaller than a numerical value calculated from the rotational speed of the main shaft 51, it is determined that the blade 30 is difficult to rotate, that is, the fabric is hard, and the main shaft 51 of the motor 50 The voltage applied to the motor 50 is adjusted so that the rotation speed of the motor 50 increases. On the contrary, when the rotational speed of the blade shaft 41 is larger than the numerical value calculated from the rotational speed of the main shaft 51, it is determined that the blade 30 is easy to rotate, that is, the cloth is soft, and the main shaft 51 of the motor 50 is The voltage applied to the motor 50 is adjusted so that the number of rotations becomes small.

  In the present embodiment, the dough hardness is determined by comparing and calculating the rotation speed of the blade shaft 41 and the rotation speed of the main shaft 51, and the rotation speed of the main shaft 51 of the motor 50 is controlled. However, as will be described later, it is possible to determine the hardness of the fabric based on the temperature of the fabric measured by the fabric sensor 80 and to control the rotational speed of the main shaft 51 of the motor 50.

  In the present embodiment, as described above, the rotational speed of the main shaft 51 of the motor 50 is calculated based on the voltage applied to the motor 50 by the microcomputer 100, and the rotation of the blade shaft 41 measured by the rotary plate 52 and the photo interrupter 53. The number of rotations and the rotation speed of the main shaft 51 of the motor 50 calculated immediately before are compared and calculated. The measured value measured by the motor rotation speed sensor 50a is used as the rotation speed of the main shaft 51 of the motor 50, and the blade shaft It is also possible to make a configuration that compares and calculates the number of rotations of 41.

  Further, in the configuration for comparing and calculating the rotational speed of the blade shaft 41 measured by the rotary plate 52 and the photo interrupter 53 and the rotational speed of the main shaft 51 of the motor 50 calculated immediately before, the rotational plate 52 and the photo interrupter 53 are used. When an abnormality occurs in the rotational speed measuring means, the kneading process can be performed using the measured value measured by the motor rotational speed sensor 50a instead of the rotational speed measuring means. In this case, the rotational speed of the blade shaft 41 is output by calculating using the pulley ratio between the large pulley 47 and the small pulley 49. By configuring as described above, the kneading process can be performed using the motor rotation speed sensor 50a even when the rotation speed measuring means is out of order, so that the service life of the home bakery 1 can be extended.

  According to the home bakery according to the present embodiment, by configuring as described above, it is possible to control according to the actual kneading state of the dough. Specifically, the main shaft 51 of the motor 50 calculated based on the rotation speed of the blade shaft 41 measured by the rotating plate 52 and the photo interrupter 53 and the voltage applied to the motor 50 due to the hardness of the fabric. Appropriate rotation drive of the blade shaft 41 and the blade 30 when there is a predetermined difference or more between the rotation number (or the rotation number of the main shaft 51 of the motor 50 measured by the motor rotation number sensor 50a). The speed can be adjusted. A numerical value calculated from the rotational speed of the blade shaft 41 and the rotational speed of the main shaft 51 also when the diameters of the fan belt 48, the large pulley 47, and the small pulley 49 vary, or when the fan belt 48 slips. Therefore, the rotational drive of the blade shaft 41 and the blade 30 can be adjusted to an appropriate speed.

  Further, in the home bakery 1 according to the present embodiment, when the rotational speed of the blade shaft 41 is equal to or less than a numerical value calculated from the rotational speed of the main shaft 51, the dough is soft, that is, the temperature inside the hopper 20 is high. The microcomputer 100 adjusts the voltage applied to the motor 50 so that the rotational speed of the main shaft 51 of the motor 50 is reduced, and drives the fan 70.

  As described above, in the present embodiment, when the rotation speed of the blade shaft 41 and the rotation speed of the main shaft 51 of the motor 50 are compared and it is determined that the temperature of the fabric is high, the fan 70 is driven to drive the hopper 20. The inside of can be cooled. In this way, the home bakery 1 can be controlled in accordance with the actual kneading condition (temperature) of the dough.

  In the home bakery 1 according to the present embodiment, when the rotation of the blade shaft 41 is not detected by the rotating plate 52 and the photo interrupter 53, the microcomputer 100 sets the voltage so that the rotational speed of the main shaft 51 of the motor 50 gradually increases. Adjust. If the rotation of the blade shaft 41 is not detected even after a predetermined time has elapsed, it is determined that there is a problem such as derailment of the fan belt 48, the drive of the motor 50 is stopped, and the buzzer 121 (see FIG. 3) is turned on. Sounds an abnormality notification.

Moreover, in the home bakery 1 which concerns on this embodiment, the hopper 20 is formed in a rectangular shape by planar view. In addition, slits 52a, 52a,... Are formed on the rotating plate 52 in the rotational speed measuring means every 90 degrees, so that the photo interrupter 53 can detect the position of the blade 30 every 90 degrees with respect to the blade shaft 41. Yes. Thereby, the rotation speed of the blade shaft 41 can be measured in more detail by the rotation speed measuring means corresponding to the shape of the hopper 20.
Specifically, it is possible to detect how the blades 30 are rotating inside the rectangular hopper 20, that is, whether or not there is a local increase / decrease in rotational speed at the corners of the hopper 20. is there.

Front and rear ribs 20d and 20e are formed in the hopper 20 of the present embodiment.
Thereby, when the dough is rotated, the home bakery 1 can apply the dough to the front and rear ribs 20d and 20e, and can reliably invert the dough.
Moreover, the home bakery 1 is improving the kneading effect by the blade | wing 30 by narrowing the clearance gap between the hopper 20 and the blade | wing 30 by the front and rear ribs 20d and 20e. Therefore, the home bakery 1 can shorten the kneading time.

  Here, the dough becomes soft as the temperature rises. If the temperature of the dough is greatly increased during the kneading process, the dough may become too soft and knead the dough too much. In this case, the bread cannot be baked deliciously.

In the kneading process, the temperature of the dough varies depending on the temperature of the raw material of bread (flour, water, etc.) and the temperature of the room where the home bakery 1 is installed.
As the blade 30 rotates, the bearing 42 that supports the blade shaft 41 generates heat. The temperature of the dough increases due to the heat generation.

Therefore, in the kneading process, in order to bake the bread deliciously, it is necessary to suppress the temperature rise of the dough so that the temperature does not become higher than the temperature at which the dough does not become too soft (hereinafter referred to as “maximum temperature”). There is.
As such a maximum temperature, for example, a temperature slightly lower than 30 ° C. is set.

  Therefore, the home bakery 1 measures the temperature of the dough by the dough sensor 80 in the kneading process. Then, when the temperature of the dough rises to a temperature lower than the maximum temperature, the home bakery 1 operates the fan 70 to cool the dough. In addition, the microcomputer 100 adjusts the voltage so that the rotational speed of the main shaft 51 of the motor 50 is reduced. As a temperature at which such a fan 70 is operated, for example, a temperature of about 23 ° C. is set.

  At this time, the fan 70 supplies cooling air to the outside of the hopper accommodating portion 15. That is, the home bakery 1 cools the dough without directly applying cooling air to the dough. According to this, the home bakery 1 can cool the dough without drying the dough.

1 Home Bakery 20 Hopper 20a Bottom 30 Blade 40 Drive Mechanism 41 Blade Shaft 50 Motor (DC Motor)
51 Spindle 52 Rotating plate 53 Photo interrupter (slit detection means)
100 Microcomputer (control means)

Claims (5)

A hopper that can accommodate the dough inside,
Blades erected so as to be rotatable around the blade axis at the bottom of the hopper;
A DC motor having a main shaft disposed on a side portion in a horizontal direction with respect to the blade shaft;
A drive mechanism for transmitting rotation of the main shaft of the DC motor to the blade shaft to rotate the blade;
Control means for controlling the rotational speed of the main shaft of the DC motor by adjusting the voltage applied to the DC motor,
The blade shaft is provided with a rotational speed measuring means for measuring the rotational speed of the blade shaft,
The control means sets a voltage to be applied to the DC motor based on the rotational speed of the blade shaft measured by the rotational speed measuring means, and the rotational speed of the blade shaft measured by the rotational speed measuring means; Based on the calculation result obtained by calculating the rotation speed of the main shaft of the DC motor, a voltage to be applied to the DC motor is set.
A home bakery characterized by that. The number of rotations of the main shaft of the DC motor is calculated based on the voltage applied to the DC motor by the control means immediately before the calculation.
The home bakery according to claim 1 , wherein: The DC motor is provided with motor rotation number measuring means for measuring the rotation number of the main shaft,
The measurement value measured by the motor rotation number measuring means is the rotation number of the main shaft of the DC motor.
The home bakery according to claim 1 , wherein: By being controlled by the control means, it comprises a cooling fan that cools the inside of the hopper,
The control means controls the driving of the cooling fan based on the calculation result.
Wherein the, home bakery according to any one of claims 1 to 3. The hopper is formed in a rectangular shape in plan view,
The rotational speed measuring means is composed of a rotating plate in which a slit is formed and disposed so as not to be relatively displaceable with respect to the blade shaft, and a slit detecting means for detecting the slit,
The slit detection means detects the position of the blade every 90 degrees with respect to the blade axis by forming the slit every 90 degrees on the rotating plate.
The home bakery according to any one of claims 1 to 4 , wherein the home bakery is characterized.

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