JPH0622677A - Bread dough processing machine - Google Patents

Abstract

PURPOSE:To keep the temperature increasing rate constant even by changing the amount of bread dough stored in a storage chamber by measuring the temperature change in a storage chamber with lapsed time and controlling a heating means in such a manner as to keep a prescribed temperature increasing rate until the temperature in the chamber reaches a preset level. CONSTITUTION:An openable door 8 is attached to the front face of a storage chamber 1, plural shelves 9 for holding bread dough are placed in the chamber 1 and air-ducts 10, 11 are formed at the upper part and the right and left sides in the chamber. An evaporator 3 and an electric heater 7 are placed in one of the side air-ducts and the temperature in the storage chamber is detected by a thermistor 14. The temperature in the chamber is compared with the lapsed time by a controller and the electric heater is controlled to keep a prescribed temperature increasing rate until the temperature in the chamber reaches a preset level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dough treating machine for freezing (storing), thawing, refrigerating (aging), and fermenting dough.

[0002]

2. Description of the Related Art Conventionally, this kind of bread dough processing machine is provided with a plurality of sheaves for placing bread dough in an adiabatic storage box, and air for dough processing cooled or heated by a refrigeration circuit or an electric heater. By feeding the dough into the storage, the dough is frozen (stored), thawed, refrigerated (aged), and fermented. Also, in the fermentation process of bread dough, constant electric power is supplied to the electric heater for a predetermined time,
The temperature inside the storage is raised to the set temperature.

[0003]

However, in the fermentation process in the bread dough processing machine, the electric heater is adapted to supply a constant electric power for a predetermined time. Therefore, when the bread dough is stored in different amounts, the fermentation is performed in the same time. Even if it is set to end, the temperature rise rate is different each time. Therefore, there is a problem that the fermentation state of the bread dough cannot always be kept constant and the quality of the bread dough varies.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to make it possible to always raise the temperature in the storage cabinet at a constant speed even when the storage amount of the bread dough is different. To provide a processing machine.

[0005]

In order to achieve the above object, the present invention comprises, in claim 1, a storage case for storing bread dough and a heating means for heating air supplied to the storage case. In the bread dough processor for raising the temperature in the storage by the heating means to a set temperature for a predetermined time,
A control unit is provided which compares the temperature in the storage with the elapsed time and controls the heating unit to maintain a predetermined temperature increase rate until the temperature in the storage reaches the set temperature.

Further, according to a second aspect of the present invention, there is provided a storage box for storing the bread dough, a heating means for heating the air supplied to the storage box, and a cooling means for cooling the air supplied to the storage box. In a bread dough processing machine that raises the temperature in the storage to a set temperature for a predetermined time by the heating means, the temperature in the storage is compared with the elapsed time, and the temperature in the storage is predetermined until the set temperature is reached. The control means for controlling the heating means and the cooling means is provided so as to maintain the temperature rise rate.

[0007]

According to the bread dough processor of claim 1, the elapsed time after the driving of the heating means is started and the temperature in the storage box are compared, and the temperature in the storage box reaches the set temperature at a predetermined speed. Since the heating means is controlled to rise, the temperature in the storage compartment always rises at a constant speed even when the bread dough is stored in different amounts.

Further, according to the bread dough processing machine of claim 2, in addition to the operation of claim 1, the cooling means is drive-controlled in addition to the heating means, so that the rate of increase in the internal temperature is more accurate. Controlled by.

[0009]

1 to 5 show one embodiment of the present invention, FIG. 1 (a) is a side sectional view of a bread dough processor, and FIG.
Is a front sectional view thereof. In the figure, 1 is a storage box, 2 is a compressor, 3 is an evaporator, 4 is a condenser, 5 is a condenser fan, and 6 is a condenser.
Is a humidifier, and 7 is an electric heater.

The storage case 1 is formed by a heat insulating wall, and on its upper surface, devices such as a compressor 2, a condenser 4, a condenser blower 5 and a humidifier 6 are installed. An opening / closing door 8 is attached to the front surface of the storage case 1, and a plurality of upper and lower shelves 9 for placing bread dough are provided therein. Ventilation paths 10 and 11 are formed in the upper part and the left and right sides inside the storage case 1, and the steam feeding pipe 6 of the humidifier 5 is formed in the upper ventilation path 10.
a is facing. An air outlet 10a is provided at the center of the upper ventilation passage 10, and a blower 12 is attached to the air outlet 10a so as to face the inside of the storage case 1. An air intake port 11a is provided at the lower end of each side ventilation passage 11, and the evaporator 3 and the electric heater are provided in one side ventilation passage 11.
Data 7 is arranged. Furthermore, the upper shelf 9 and the blower 1
A partition plate 13 having a gap between the front surface and the back surface of the storage case 1 is provided between the partition plate 13 and the storage board 2. Reference numeral 14 is a thermistor that detects the temperature inside the storage case 1.

FIG. 2 is a block diagram showing a control system. That is, 15 is a control unit having a microcomputer configuration, to which the electric heater 7, the thermistor 14, a timer 16, and an operation unit 17 for inputting a set temperature and the like are connected.

In this bread dough processing machine, as shown in FIG. 4, bread dough A molded into a predetermined shape is placed on each shelf 9,
The following freezing mode operation, refrigerating mode operation and fermentation mode operation are performed. Further, each of these mode operations is sequentially and automatically switched by a microcomputer (not shown) or the like.

First, in the freezing mode operation, the freezing circuit is operated to cool the inside of the storage 1 to about -18 ° C., and the bread dough is stored in a frozen state for a predetermined time.

Next, in the refrigerating mode operation, the operation of the refrigerating circuit is continued and the electric heater 7 is operated to operate the storage box 1.
The internal temperature is raised to about 10 to 15 ° C, and the dough is thawed and aged.

Subsequently, in the fermentation mode operation, the operation of the refrigeration circuit is stopped and the electric heater 12 and the humidifier 6 are operated.
Is operated to supply high temperature (about 25 to 40 ° C.) and high humidity air into the storage 1 to ferment the bread dough.

Now, the operation of the control unit 15 in the fermentation mode operation will be described with reference to the flow chart shown in FIG. 4 and the graph shown in FIG. However, T is the elapsed time from the start of the fermentation mode operation, T1 is the temperature rise time, and T
2 is the end time of the fermentation mode operation, t is the temperature inside the chamber detected by the thermistor 14, and ts is the set temperature (fermentation mode).
Is the temperature that is increased by the operation), α is the predetermined temperature increase rate (=
ts / T1), V is a drive voltage for the electric heater 7, and .DELTA.V is a minute voltage for increasing or decreasing the drive voltage V.

First, when the refrigerating mode operation is switched to the fermentation mode operation (S1), the electric heater 7 and the timer 16 are driven (S2, S3), and the time is waited (S4). next,
The elapsed time T at this point is compared with the internal temperature t, and t /
When the value of T is smaller than the temperature increase rate α (S5), ΔV is added to the drive voltage V of the electric heater 7 (S6), and t / T
When the value of is larger than the temperature increase rate α (S7), ΔV is subtracted from the drive voltage V of the electric heater 7 (S8). If the elapsed time T has not reached T1 (S9), the process returns to step S4 and waits for the time, then step S4.
The operations of to S9 are repeated. As a result, the elapsed time T becomes T
Until the temperature reaches 1, the value of t / T is a constant temperature rise rate α
Is feedback controlled to Then, when the elapsed time T reaches T1 (S9), the internal temperature t inevitably rises to the set temperature ts, so that the temperature is kept as it is, and if the elapsed time T reaches the end time T2. If the fermentation mode operation ends. The fermentation mode operation may be performed stepwise based on a plurality of set temperatures, and in this case, after the fermentation mode operation is finished, the fermentation mode operation is sequentially switched to the next step. However, even in that case, the temperature rise rate is controlled by the same operation as described above.

As described above, according to the bread dough processor of this embodiment, the elapsed time T from the start of the fermentation mode operation is compared with the internal temperature t, and the internal temperature t is the set temperature ts. Since the drive voltage V of the electric heater 7 is controlled so as to maintain the predetermined temperature increase rate α until the temperature reaches, the fermented state of the bread dough can be always kept constant even when the storage amount of the bread dough is different. .

In the above embodiment, only the electric heater 7 is controlled in the process of increasing the internal temperature t, but if the refrigerating circuit is operated in addition to the electric heater 7, the temperature can be increased. The rate of rise can be controlled more accurately.
That is, FIG. 6 is a flowchart in which a part of the program is changed, and only the main part thereof is shown. According to this program, when the value of t / T is larger than the temperature increase rate α in step S7, ΔV is subtracted from the drive voltage V of the electric heater 7 in step S8, but the internal temperature t is significantly increased. When it is high, that is, the value of t / T is a predetermined additional value β to the temperature increase rate α
When the value is larger than the value obtained by adding (S8 '), the compressor 2 of the refrigeration circuit is operated (S8 "), and the internal temperature t is positively lowered. For example, the operation is performed only during the waiting time in step S4.

[0020]

As described above, according to the bread dough processing machine of claim 1, the temperature in the storage can be always raised at a constant speed even when the bread dough is stored in different amounts. There is an advantage that the fermentation state can always be kept constant and the quality does not vary.

Further, according to the bread dough processor of claim 2, the effect of claim 1 can be achieved, and the rate of rise of the temperature inside the refrigerator can be controlled more accurately.

[Brief description of drawings]

FIG. 1 is a sectional view of a bread dough processor showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a control system.

[Fig. 3] Perspective view of bread dough

FIG. 4 is a flowchart showing the operation of the control unit.

FIG. 5 is a graph showing the relationship between temperature and time.

6 is a main part flowchart showing an example in which a part of the program of FIG. 4 is modified.

[Explanation of symbols]

1 ... Storage, 2 ... Compressor, 7 ... Electric heater, 14 ... Thermistor, 15 ... Control part, 16 ... Timer, A ... Bread dough.

Claims (2)

[Claims] 1. A bread dough which comprises a storage for storing bread dough and heating means for heating air supplied to the storage, and which raises the temperature in the storage to a set temperature for a predetermined time by the heating means. In the processing machine, a control means is provided for comparing the temperature inside the storage with the elapsed time and controlling the heating means so as to maintain a predetermined temperature increase rate until the temperature inside the storage reaches the set temperature. A dough processing machine characterized by. 2. A storage box for storing bread dough, a heating means for heating the air supplied to the storage box, and a cooling means for cooling the air supplied to the storage box. In a bread dough processor that raises the temperature in the storage to a set temperature for a predetermined time, the temperature in the storage is compared with the elapsed time, and a predetermined temperature rise rate is reached until the temperature in the storage reaches the set temperature. A dough processing machine, characterized by comprising control means for controlling the heating means and the cooling means to hold the dough.