JP3211717B2 - Automatic bread maker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bread maker used in ordinary households.

[0002]

2. Description of the Related Art A conventional automatic bread maker will be described with reference to FIG. FIG. 4 is a block diagram showing a configuration of a main part of a conventional automatic bread maker.
Is a bread baking mold detachably mounted, 4 is a motor, 5
Is a belt for transmitting the power of the motor 4 and 6 is a motor 4
, A temperature detecting means for contacting the outer surface of the baking mold 3 to detect the temperature of the baking mold 3 for process determination and temperature control; 8, a lid; Reference numeral 10 denotes a solenoid for dropping yeast in conjunction with a valve of the yeast inlet 9, and 11 denotes a heater 2 or a motor 4 based on a signal from the temperature detecting means 7.
And a control device equipped with a microcomputer for controlling the solenoid 10 and performing baking, and a power supply circuit 12 for supplying power to the control device 11.

[0003] When cooking is started, the controller 11 selects one of a plurality of baking processes based on the temperature detected by the temperature detecting means 7, and thereafter selects the heater 2, the motor 4, and the solenoid according to the selected baking process. 10
Baking is performed by controlling each of the loads.

[0004]

In the automatic bread maker of such a conventional construction, when the power is turned on, power is supplied to the power supply circuit 12 to generate heat, and the heated air is supplied to the temperature detecting means 7 above the power supply circuit. When the elapsed time from turning on the power to starting cooking becomes longer, the temperature detected by the temperature detecting means 7 becomes higher than the actual temperature, and the correct baking process is selected at the start of cooking. There was a problem that it became impossible to do.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem. In an automatic bread maker which can store a detected temperature at the time of turning on a power supply, a cooking process suitable for the temperature can be selected when starting cooking. The purpose is to do.

[0006]

Means for Solving the Problems To solve the above problems, one means of the present invention is to provide a firing chamber having a heater,
A bread baking mold that can be detachably mounted in the baking chamber, a kneading blade driven by a motor provided at an inner bottom portion of the bread baking mold, and a temperature detection unit that contacts the baking chamber and detects a temperature in the baking chamber, A temperature storage means for storing a temperature detected at the time of turning on the power; a control device for performing predetermined bread baking control based on the temperature detected by the temperature detection means; and a power supply circuit for supplying power to the control device. The automatic baking apparatus is characterized in that, when cooking is started, one of a plurality of baking processes is selected from the plurality of baking processes based on the temperature detected by the temperature detection means when the power is turned on, and control is performed according to the baking process. Therefore, the temperature storage means stores the detected temperature when the power is turned on, and the baking process can be selected based on the temperature stored at the start of cooking.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
A baking chamber having a heater, a baking mold that can be removably mounted in the baking chamber, a kneading blade provided at an inner bottom of the baking mold and driven by a motor, Temperature detecting means for detecting,
A temperature storage means for storing a temperature detected at the time of turning on the power; a control device for performing predetermined bread baking control based on the temperature detected by the temperature detection means; and a power supply circuit for supplying power to the control device. The automatic baking apparatus is characterized in that, when cooking is started, one of a plurality of baking processes is selected from the plurality of baking processes based on the temperature detected by the temperature detection means when the power is turned on, and control is performed according to the baking process. The temperature storage means stores the detected temperature at the time of turning on the power, and the baking process can be selected based on the temperature stored at the start of cooking. Has the effect that the influence can be eliminated even if the detected temperature changes.

The invention according to claim 2 of the present invention measures the time from power-on to the start of cooking, and corrects the detected temperature at the start of cooking by a predetermined temperature if the elapsed time is long. Since the selection of the bread process is performed, there is an effect that the optimum bread making process can be selected even when the room temperature changes.

In the invention according to claim 3 of the present invention, the correction temperature is changed in accordance with the elapsed time after the power is turned on, so that the power supply circuit does not affect the detection means accurately and the bread making process can be performed. It has the effect that it can be selected.

[0010]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

FIG. 1 is a block diagram showing the structure of the main part of a first embodiment of the present invention. Reference numeral 13 denotes a temperature storage means for storing the temperature detected by the temperature detection means 7 when the power is turned on.
Reference numeral 4 denotes a control device which receives signals from the temperature detecting means 7 and the temperature storing means 13 and controls the heater 2, the motor 4 and the solenoid 10. In this embodiment, a microcomputer is used as the temperature storage means 13 and the control device 14, and a thermistor is used as the temperature detection means 7.

The operation of this embodiment in the above configuration will be described. First, when the power is turned on, the temperature storage means 1 is turned on.
Reference numeral 3 stores a temperature K0 at the time of power-on detected by the temperature detecting means 7. Next, when the start of cooking is instructed, the control device 14 obtains the detected temperature K0 of the temperature detecting means 7 when the power is turned on from the signal of the temperature storage means 13. And the control device 1
A comparison is made between the temperature ranges of a plurality of baking processes possessed by 4 and the obtained temperature K0, and one baking process is selected from the comparison. Thereafter, the control device 14 controls the heater 2, the motor 4 and the solenoid 10 according to the temperature detected by the temperature detecting means 7 according to the selected bread making process,
Conduct a baking process.

As a result, the detected temperature immediately after the power is turned on is stored, the baking process is selected based on the stored detected temperature at the start of cooking, and an error in the determination of the baking process due to heat generation of the power supply circuit is detected. Can be prevented.

(Embodiment 2) Next, the operation of the second embodiment will be described with reference to FIGS. In addition,
Components having the same configuration as the conventional example are denoted by the same reference numerals, and description thereof is omitted.

FIG. 2 is a block diagram showing a configuration of a main part of a second embodiment of the present invention. Reference numeral 15 denotes time measuring means for measuring an elapsed time since power-on, 16 denotes temperature detecting means 7,
This is a control device that receives signals from the temperature storage unit 13 and the timing unit 15 and controls the heater 2, the motor 4, and the solenoid 10. In this embodiment, a microcomputer is used as the clocking means 15 and the control device 16.

The operation of this embodiment in the above configuration will be described. First, when the power is turned on, the temperature storage means 1
Reference numeral 3 stores the temperature detected by the temperature detecting means 7, and the time measuring means 15 starts measuring the elapsed time. Next, when the start of cooking is instructed, the control device 16 obtains the elapsed time t from the power-on from the signal of the timer 15. If the elapsed time t is shorter than a predetermined time T0 (10 minutes in this embodiment) (t <T0), the temperature θ for selecting the bread making process is set.
Adopt temperature K0 immediately after power-on as t (θt = K0)
And the time elapsed since the power was turned on is set to T0.
If (t ≧ T0), θt is set as the temperature detection means 7
The temperature obtained by subtracting the predetermined temperature Δθ (2 ° C. in this embodiment) from the detected temperature Kt is adopted as the temperature for selecting the bread making process, and is compared with the temperature range of the bread making process. Select the baking process.

FIG. 3 is a graph showing the above operation, in which the horizontal axis indicates the elapsed time (t) since the power was turned on, and the vertical axis indicates the determination temperature (θt) for selecting the bread making process. The solid line indicates the actual determination temperature, and the broken line indicates the detected temperature (Kt) of the temperature detecting means 7. If the time from the power-on to the start of cooking is within 10 minutes, θt = K0 (the temperature detected by the temperature detecting means 7 at the time of power-on).
Kt-Δθ (temperature obtained by subtracting a predetermined temperature from the detected temperature).

As a result, if a long time has elapsed since the power was turned on, the bread making process is selected at a temperature obtained by subtracting a certain temperature from the detected temperature, and the optimum bread making process is selected even when the room temperature changes. Is what you can do.

(Embodiment 3) Next, the operation of the third embodiment will be described. FIG. 4A is a graph showing the elapsed time since the power was turned on and the temperature detected by the temperature detecting means 7. The horizontal axis shows the elapsed time (t), and the vertical axis shows the detected temperature (Kt).
Even when the ambient temperature (room temperature) is constant, the detected temperature Kt gradually rises from the detected temperature K0 when the power is turned on, rises by about 2 ° C. in 25 minutes, and stabilizes.

FIG. 4 (b) is a graph showing the elapsed time from the power-on and the correction temperature for correcting the detected temperature. The correction temperature Δθt is 0 (no correction) immediately after the power-on,
Δθt increases in the same curve as the graph shown in FIG. When the start of cooking is instructed, the control device 16 controls the temperature detecting means 7
Then, the signal of the timer 15 is input, and first, a correction temperature Δθt corresponding to the elapsed time t from the power-on is obtained. Then, the output Kt of the temperature detecting means 7 when the start of cooking is instructed
From the correction temperature Δθt and the determination temperature θt as θt = Kt−Δθ
t is determined, the determined temperature is compared with the temperature range of the bread making process, and the bread making process is selected.

As a result, the detected temperature is corrected by the temperature dependent on the time elapsed since the power was turned on, and the baking process is selected using the detected temperature, so that a baking process more suitable for room temperature can be selected. Things.

[0022]

As apparent from the above description of the embodiment, according to the first aspect of the present invention, the detected temperature immediately after the power is turned on is stored, so that the temperature at the time when the power is turned on can be obtained. This makes it possible to select a bread process and prevent an erroneous determination of the bread making process due to heat generation of the power supply circuit.

According to the second aspect of the present invention, when a long time has elapsed since the power was turned on, the bread making process is selected at a temperature obtained by subtracting a certain temperature from the detected temperature, so that the room temperature can be reduced. Even if it changes, an optimum baking process can be selected. Therefore, even when cooking is started after a long time has elapsed since the power was turned on, a baking process that is at the temperature at the time of cooking can be selected.

According to the third aspect of the invention, by correcting the detected temperature with the temperature dependent on the time elapsed since the power was turned on, it is possible to select a bread making process more suitable for room temperature. is there.

[Brief description of the drawings]

FIG. 1 is a block diagram of an automatic bread maker according to a first embodiment of the present invention.

FIG. 2 is a block diagram of an automatic bread maker according to a second embodiment of the present invention.

FIG. 3 is a graph showing elapsed time and determination temperature of a bread making process according to a second embodiment of the present invention.

FIG. 4 (a) is a graph showing the elapsed time since the power supply of the automatic bread maker according to the third embodiment of the present invention and the temperature detected by the temperature detecting means; Graph showing the correction time for correcting the elapsed time and the detected temperature

FIG. 5 is a cross-sectional view of the entire configuration of a conventional automatic bread maker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Baking room 2 Heater 3 Bread mold 4 Motor 6 Mixing blade 7 Temperature detecting means 11, 14, 16 Controller 12 Power supply circuit 13 Temperature storage means 15 Clocking means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-191761 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 37/00 301

Claims (3)

(57) [Claims] 1. A baking chamber having a heater, a baking mold removably mountable in the baking chamber, a kneading blade provided on an inner bottom of the baking mold and driven by a motor, and abutting on the baking chamber. Temperature detecting means for detecting the temperature in the firing chamber, temperature storing means for storing a detected temperature at the time of turning on the power, a control device for performing a predetermined baking control based on the temperature detected by the temperature detecting means, and a control device for the control device. When the cooking is started, the control device selects one of a plurality of baking processes based on the temperature detected by the temperature detecting means when the power is turned on, and selects the baking process. An automatic bread maker, wherein control is performed according to the following. 2. A baking process, comprising: a time-measuring means for measuring a time from when the power is turned on to when cooking is started, and wherein the control device uses a temperature detected at the time of turning on the power until the predetermined time elapses after the power is turned on. 2. The automatic bread maker according to claim 1, wherein after the lapse of a predetermined time, a predetermined temperature is subtracted from the detected temperature at the start of cooking to select a bread maker process based on the corrected temperature. 3. When the cooking is started, the controller corrects the detected temperature at the start of cooking based on the elapsed time since the power was turned on, and selects one of a plurality of baking processes. An automatic bread maker according to claim 2, characterized in that: