JP2007082801A - Bread maker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bread maker having a bread case 31 readily washed without bothering a user. <P>SOLUTION: The bread maker includes a main body 10 provided with a baking chamber 12 having a heating means (heater 15), the bread case 31 removably disposed in the baking chamber 12, a blade member 40 rotatably mounted in the bread case 31, and a driving means (driving motor 18) for rotationally driving the blade member 40. The bread maker is provided with a cleaning course for rotationally driving the blade member 40 in the bread case 31 keeping water inside. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bread maker.

  This type of bread maker includes a baking chamber in which a heater is disposed, and a pan case that is detachably disposed in the baking chamber. A blade member for stirring and kneading the dough material housed therein is rotatably attached to the bottom of the bread case. The blade member is detachably connected to the drive motor via a power transmission mechanism.

  In this bread maker, the user selects a desired bread-making course in a state where the bread case is arranged in the baking chamber, and operates a start switch by accommodating materials necessary for bread to be baked in the bread case. Thereby, a control means performs each process of preheating, stirring, kneading | mixing, fermentation, and baking according to the program set according to the selected bread-making course, and bakes bread.

  Specifically, in the preheating step, the temperature in the baking dough material is adjusted by maintaining the baking chamber at a predetermined temperature. In the stirring step, the dough material and water are slowly and sufficiently mixed by intermittently rotating the blade member for a preset time. In the kneading step, the dough material in the bread case is kneaded by rotating the blade member with full power while the heater is stopped for a predetermined time. In the fermentation process, the baking chamber is maintained at a predetermined temperature by a heater, and the kneaded bread dough material is fermented. In the baking process, the baking chamber is maintained at a high temperature for a predetermined time, and the bread is baked.

  In addition, there exists the following as prior art literature information relevant to the bread maker of this invention.

Japanese Patent No. 3666451 Japanese Patent No. 3664113

  However, in this bread maker, when the bread making course is executed and the bread is baked, the dough that has entered between the detachable blade member and the shaft is baked. And the baked dough is very hard and is very difficult to wash off. This washing operation is performed, for example, after water is stored inside the bread case and is softened by infiltrating the baked dough. Moreover, what has entered the gap between the blade member and the shaft needs to be removed by applying a pointed member, which is very troublesome.

  The present invention has been made in view of conventional problems, and an object of the present invention is to provide a bread maker that can easily clean a bread case without bothering the user.

  In order to solve the above problems, a bread maker of the present invention includes a main body provided with a baking chamber having a heating means, a pan case detachably disposed in the baking chamber, and rotatably mounted in the pan case. In the bread maker provided with the blade member and the driving means for rotating the blade member, a cleaning course for rotating the blade member in a state where water is contained in the pan case is provided. Yes.

  According to this bread maker, since the cleaning course is performed in a state where water is contained in the bread case, it is possible to soften the water by infiltrating the dough baked on the inner wall and blade member of the bread case during this execution. . In this state, since the blade member is driven to rotate, the bread dough attached to the inner wall of the bread case can be separated by the water flow. Moreover, the bread dough adhering to the blade member is similarly separated by water flow, and the bread dough adhering to the gap with the shaft can be sufficiently separated by their play.

  Therefore, the user can easily clean the bread case without any trouble by executing the cleaning course after the bread making course. Moreover, in this type of bread maker, when the bread making course is executed, the baking chamber becomes high temperature, and therefore the bread making course cannot be executed continuously unless the temperature is lowered to a preset temperature or lower. Therefore, by executing the cleaning course after the bread making course is completed, not only can the pan case be washed, but also a temperature lowering action in the baking chamber can be obtained. Obtainable.

In this bread maker, it is preferable that the blade member is intermittently rotated through the driving means in the cleaning course.
In the cleaning course, it is preferable that the blade member repeats normal rotation and reverse rotation by the driving means.
By doing so, it is possible to reliably and sufficiently obtain the bread dough separating action.

  In the bread maker of the present invention, a cleaning course for rotating the blade member in a state where water is contained is provided, so that the hard bread dough that has been baked is sufficiently softened with water and reliably separated by water flow. Can do. Therefore, the user can easily clean the pan case and the blade member without any trouble.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a bread maker according to an embodiment of the present invention. In this bread maker, a lid 27 is detachably mounted on the main body 10 at the upper end opening, and a pan case 31 is detachably mounted inside the main body 10.

  The main body 10 includes an exterior body 11 including a body member 11a and a bottom member 11b. Inside the exterior body 11, there are a firing chamber 12 having an upper end opening partitioned by a partition, a drive mechanism housing chamber 13 below the firing chamber 12, and a front operation substrate housing chamber 14 partitioned by a heat shield. And are provided.

  The baking chamber 12 detachably accommodates the pan case 31, and a heater 15, which is a heating means for heating the pan case 31, is disposed in the lower part of the inner periphery thereof. A through hole is provided in the center of the bottom surface of the baking chamber 12, and a locking member 16 to which a base member 34 of a pan case 31 described later is attached by bayonet fitting is disposed at the edge of the through hole.

  A base 17 that supports the lower portion of the baking chamber 12 is disposed in the drive mechanism accommodation chamber 13, and a drive motor 18 that is a drive means for driving the blade member 40 of the pan case 31 to the base 17, A power transmission mechanism 19 for connecting the drive motor 18 and the blade member 40 to transmit power, and a circuit board 20 on which a power supply circuit for supplying drive power to the heater 15 and the drive motor 18 is mounted. It is arranged. Further, a thermistor 21 (see FIG. 3) is provided as a temperature detecting means so as to contact the side surface of the baking chamber 12. In this embodiment, the drive motor 18 uses a motor whose output shaft 22 can rotate forward and backward.

  The power transmission mechanism 19 includes a first pulley 23 having a small diameter provided on the output shaft 22 of the drive motor 18, a bearing member 24 provided so as to be positioned at the center of the firing chamber 12, and the bearing member 24. And a large-diameter second pulley 25 that is rotatably attached to the pulley 23 and an endless belt 26 wound around the pulleys 23 and 25. In the center of the upper surface of the second pulley 25, a plurality of protrusions 25a are provided for detachably mounting the blade member 40.

  3 is disposed in the operation board housing chamber 14 so as to be positioned in front of the body member 11a, and a switch, a microcomputer 51, a liquid crystal panel 50, and the like as input means are mounted on the back of the operation panel 46. A panel substrate 49 is provided. The operation panel 46 and the panel substrate 49 will be described later in detail.

  The lid 27 includes an exterior cover 28 and a metal inner cover 29 that closes the upper end opening of the baking chamber 12, and is connected to the main body 10 by a hinge structure at the back. The outer cover 28 and the inner cover 29 are provided with a through hole so as to be positioned at the center of the baking chamber 12, and a viewing window 30 made of transparent glass having heat resistance is attached to the through hole.

  The pan case 31 has a substantially rectangular outer shape, and a pair of bearing portions 32 are provided at positions opposed to the upper end opening, and a handle member 33 having a substantially concave shape is rotatable on the bearing portions 32. It is attached to. A pedestal member 34 for placing the pan case 31 is provided on the outer surface of the bottom center of the pan case 31. The pedestal member 34 is provided with a shaft 35 that extends in the vertical direction and is rotatable about its axis. A connecting member 36 that is detachably engaged with the protrusion 25 a of the second pulley 25 is disposed at the lower end of the shaft 35. Further, the upper end of the shaft 35 protrudes into the bread case 31, and a mounting portion 37 of the blade member 40 is provided at the protruding portion. As shown in FIG. 2A, the attachment portion 37 has a D-shaped cross section in which a cylindrical shaft 35 is chamfered along the axial direction. The mounting portion 37 is further provided with chamfered portions 38 a and 38 b extending downward from the vicinity of the upper end on both sides of the chamfered portion, and the non-chamfered upper end portions are retaining portions 39 a and 39 b that are locked to the blade member 40. Configure.

  The blade member 40 that is detachably attached to the shaft 35 is formed by projecting a substantially fan-shaped blade portion 42 from a shaft-mounting portion 41 having a substantially conical cylindrical shape. An attachment hole 43 having a D-shaped cross section similar to that of the attachment portion 37 of the shaft 35 is provided inside the shaft attachment portion 41. The upper end edge of the mounting hole is provided with a blocking portion 44 at a part corresponding to the arc portion of the mounting portion 37 of the shaft 35. Further, a locking step 45 for locking the retaining portions 39a and 39b is provided at the upper end of the mounting hole on the side of the straight portion. Thus, when the blade member 40 is attached to the attachment portion 37 of the shaft 35 as shown in FIG. 2 (B) and the shaft 35 is rotated clockwise as shown in FIG. 2 (C), One chamfered portion 38a abuts against the straight surface of the mounting hole 43, and the retaining portion 39a is engaged with the engaging step portion 45, and is rotated in a state where it is prevented from coming off. On the other hand, as shown in FIG. 2D, when the shaft 35 is rotated counterclockwise, the other chamfered portion 38b comes into contact with the straight surface of the mounting hole 43, and the retaining portion 39b is a locking step portion. It is locked to 45 and rotated in a state where it is prevented from coming off.

  As shown in FIG. 3, the operation panel 46 disposed on the surface of the operation substrate housing chamber 14 is provided with a through hole 47 for exposing the liquid crystal panel 50 mounted on the panel substrate 49. In addition, operation portions 48 a to 48 k corresponding to switches mounted on the panel substrate 49 are provided so as to be located around the through hole 47. Here, the operation unit 48a corresponds to a start / removal switch for executing and canceling the process, the operation unit 48b corresponds to a Δ switch that increases the timer setting time, and the operation unit 48c is a switch that decreases the timer setting time. The operation unit 48d corresponds to the menu selection switch using dry yeast as yeast, the operation unit 48e corresponds to the menu selection switch using natural yeast, and the operation unit 48f displays the baking color of the bread to be baked. The operation unit 48g corresponds to the cookie / pasta dough selection switch, the operation unit 48h corresponds to the cake selection switch, and the operation unit 48i corresponds to the jam selection switch. 48j corresponds to a recipe switch for displaying a recipe of a necessary dough material and its blending amount. . In this embodiment, an operation unit 48k corresponding to a cleaning switch for cleaning the pan case 31 is further provided.

  The liquid crystal panel 50 mounted on the panel substrate 49 is of a dot matrix display type. The liquid crystal panel 50 displays a plurality of course selection states by operating the operation units 48d to 48f. In addition, the scheduled time required for baking is decremented, and “high temperature inside”, “with ingredients”, “during cooking”, “warming”, “timer”, “nekashi”, “connect”, “fermentation” Character display indicating the operating state of the bread maker, such as “,” “baking,” “finishing,” and “cleaning” is performed in accordance with instructions from the microcomputer 51.

  The microcomputer 51 mounted on the panel substrate 49 controls each of the load components according to a condition selected by operating the switch operation units 48a to 48k. Specifically, as a cooking menu, a normal “bread” course using dry yeast, a “soft” course that is soft bread up to the dough on the outer periphery, a “fast baking” course, a “French bread” course, and “ There are a “Bread / Pizza Dough” course, a “Natural Breeding” course using natural yeast, a “Bread” course, and a “Bread / Pizza Dough” course. Also, the usual “bread” course using dry yeast is equipped with two types of bread making methods: “mochimochi” and “soft”. It should be noted that the plurality of types of bread baked in each of these courses differ in the input amount of each material as well as the type of required dough material. And each bread-making course is baked by the microcomputer 51 controlling each component according to the preset program, and performing each process of preheating, stirring, kneading, fermentation, baking, and cooling.

  And in this embodiment, the cleaning course of the pan case 31 by the operation part 48k being operated is provided. Then, when this cleaning course is executed, the microcomputer 51, which is a control means, drives the drive motor 18 intermittently at predetermined intervals to rotate the blade member 40 as shown in FIG. Moreover, the intermittent drive of the blade member 40 by the drive motor 18 is configured to repeat forward rotation and reverse rotation. Specifically, the blade member 40 is rotated in the forward rotation direction by the drive motor 18 in a preset time Ta, the preset time Tb, the drive motor 18 is stopped and waited, and then the preset time Tc and drive. The blade member 40 is rotated in the reverse rotation direction by the motor 18, and the drive motor 18 is stopped for a preset time Td and waits. This normal rotation and reverse rotation are defined as one cycle, and this cycle is repeated for a preset time T. In this embodiment, the forward and reverse drive times Ta and Tc are the same 0.1 seconds, the standby times Tb and Td are the same 5 seconds, and the total operation time T is 2 minutes.

  Next, the control by the microcomputer 51 will be specifically described.

  When a power cord (not shown) is connected to a commercial power source, the microcomputer 51 operates by applying a DC voltage operable from a power circuit (not shown), and the processing of FIG. 5 described below and a liquid crystal panel (not shown) 50 display processes are performed in parallel.

  When the power is turned on, as shown in FIG. 5, the microcomputer 51 first performs input processing of each switch in step S1. Here, the switch input processing waits until any one of the operation units 48a to 48k is operated by the user, and when an operation is detected via the switch, a corresponding condition is set and displayed.

  In step S2, it is determined whether the operated switch is a start / removal switch of the operation unit 48a. If it is a start / removal switch, the process proceeds to step S3. If it is not a start / replacement switch, the process returns to step S6.

  In step S <b> 3, the thermistor 21 detects the temperature (inside the chamber) of the baking chamber 12 and determines whether or not the detected value is equal to or less than a threshold value (40 degrees). If the detected value is equal to or smaller than the threshold value, the process proceeds to step S4, a bread making process is executed, and the process returns to step S1. If it is higher than the threshold value, an error notification sound is output by a notification means such as a piezoelectric buzzer mounted on the panel substrate 49, and the process returns to step S1.

  On the other hand, if the operated switch is not the start / removal switch of the operation unit 48a, it is detected in step S6 whether or not the operated switch is a cleaning switch of the operation unit 48k. If it is a cleaning switch, the process proceeds to step S7, a cleaning process is executed, and the process returns to step S1. If it is not a cleaning switch, the process directly returns to step S1.

  Note that the determination of the internal temperature in step S3 is that when the bread making process is continuously performed, the internal temperature is high, so that an accurate temperature determination cannot be made and the bread material cannot be set to an appropriate temperature. It is provided because a good baking state cannot be ensured.

  In the bread making process, the microcomputer 51 reads the user's selection conditions (bread making course), the corresponding threshold value, and the like by the operation of the operation units 48d to 48f. Thereafter, for example, in the case of basic ordinary bread, a preheating step of maintaining the temperature in the baking chamber 12 at 25 ° C. for 22 minutes and adjusting the temperature of the dough material is executed. When the preheating step is completed, a stirring step is performed in which the blade member 40 is intermittently operated with the heater 15 stopped. When the stirring step is completed, a kneading step is performed in which the blade member 40 is rotated at full power while the heater 15 is stopped for 15 minutes. When the kneading process is completed, a fermentation process is performed in which the first fermentation stage maintains 68 minutes, 25 ° C., the second fermentation stage, 20 minutes, 25 ° C., and the third fermentation stage, 25 minutes, 35 ° C. . When the fermentation process is completed, a baking process for maintaining the temperature at 150 ° C. for 60 minutes and baking the bread is executed. When the firing process is completed, a cooling process is performed in which the heater 15 is stopped for one minute and then naturally cooled to remove moisture. Then, when the cooling process is completed, it is notified that the bread making is completed.

  Further, in the cleaning process, as described above, the microcomputer 51 operates the blade member 40 intermittently and alternately in the forward and reverse directions by driving the drive motor 18 without driving the heater 15. Hereinafter, the effect | action by this cleaning process is demonstrated.

  First, in the bread case 31 after execution of the bread making process, there is hard bread dough baked on the inner wall, and there is also bread dough hardened by baking in the gap between the blade member 40 and the shaft 35. Yes. Here, the gap between the blade member 40 and the shaft 35 is not only the periphery of the shaft 35 exposed from the lower portion of the blade member 40 but also the inside of the attachment hole 43 or the locking step portion 45. The dough is attached to these portions in order to reliably prevent the blade member 40 from being detached during the bread-making process, and the shaft 35 is provided with chamfered portions 38a and 38b and retaining portions 39a and 39b, and the blade member. This is unavoidable due to the structure in which the locking step 45 opened to 40 is provided.

  And in the bread maker of this embodiment, cleaning processing is performed in the state where the user accommodated water with respect to the pan case 31 until about the 6th minute. Then, in the bread case 31, water penetrates into the bread dough baked on the inner wall of the bread case 31, the blade member 40 and the shaft 35, and the hardened bread dough becomes soft.

  In this state, when the blade member 40 is driven to rotate, water flows in the forward direction and the reverse direction are alternately generated in the pan case 31. Thereby, the bread dough adhering to the inner wall of the bread case 31 is separated by the water flow. Moreover, the bread dough adhering to the surface of the shaft 35 and the blade member 40 is similarly separated by a water flow. Furthermore, the bread dough adhering to the gap between the blade member 40 and the shaft 35 is softened by the penetration of water, and the blade member 40 can be finely moved with respect to the shaft 35 by play by the chamfered portions 38a and 38b of the shaft 35. Become. As a result, the bread dough that has entered the gap can be reliably and sufficiently separated.

  Thus, in the bread maker of the present invention, by executing the cleaning course after the bread making course, the user can easily clean the pan case 31 without any trouble. Moreover, in this type of bread maker, when the bread making course is executed, the inside of the baking chamber 12 becomes high temperature, and therefore the bread making course cannot be executed unless the temperature is lowered to a preset temperature or lower ( Step S3). Therefore, by executing the cleaning course after the bread making course is completed, not only can the bread case 31 be cleaned, but also the temperature lowering action in the baking chamber 12 can be obtained. As a result, a further effect can be obtained when continuous baking is desired.

  In addition, the bread maker of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, in the above-described embodiment, the blade member 40 is alternately rotated in the normal rotation direction and the reverse rotation direction by the drive motor 18, but the blade member 40 may be rotated only in the normal rotation direction. Further, although the blade member 40 is intermittently rotated by the drive motor 18, it may be continuously rotated without being stopped.

  Furthermore, in the above-described embodiment, a dedicated cleaning switch corresponding to the operation unit 48k is provided. However, in consideration of the possibility that the cleaning process is executed due to an erroneous operation by the user, the operation unit 48k must be operated for 3 seconds or more. The cleaning process may not be executed. Of course, it is also possible to use another existing switch without providing a dedicated switch.

  Furthermore, in the above-described embodiment, the cleaning process can be performed regardless of conditions such as the temperature inside the bread maker and the elapsed time after the bread making process. In other words, in other words, only the conditions under which the bread making process cannot be executed may be executable.

It is sectional drawing which shows the bread maker of embodiment which concerns on this invention. (A) is an exploded perspective view showing the configuration of the shaft and the blade member, (B) is a perspective view showing the attachment state, (C) is a perspective view showing the rotation state in the forward rotation direction, and (D) is in the reverse rotation direction. It is a perspective view which shows the rotation state of. It is a block diagram which shows the structure of the bread maker containing an operation panel. It is a time chart which shows the execution state of the cleaning course of this invention. It is a flowchart which shows the control by a microcomputer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Main body 12 ... Baking chamber 15 ... Heater (heating means)
18 ... Drive motor (drive means)
DESCRIPTION OF SYMBOLS 19 ... Power transmission mechanism 27 ... Cover body 31 ... Pan case 35 ... Shaft 40 ... Blade | wing member 51 ... Microcomputer (control means)

Claims (3)

A main body provided with a baking chamber having heating means, a pan case detachably arranged in the baking chamber, a blade member rotatably mounted in the pan case, and a driving means for rotationally driving the blade member In a bread maker equipped with
A bread making machine comprising a cleaning course for rotating the blade member in a state where water is contained in the pan case.   The bread maker according to claim 1, wherein in the cleaning course, the blade member is intermittently rotated via the driving means. 3. The bread maker according to claim 1, wherein, in the cleaning course, the blade member repeats normal rotation and reverse rotation by the driving unit.

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