JPH03280824A - Fermentation system - Google Patents

Abstract

PURPOSE:To provide the title system intended to do away with the variation in fermentation state, so designed that air-circulating fans are enabled to rotate normally and inversely, and their normal and inverse rotations are repeated at a regular cycle. CONSTITUTION:When air-circulating fans 15 or part thereof are rotated, an air stream is produced in a chamber 7 in such a fashion that air is delivered through the penetrating holes 16 on a left side duct 12 and put to suction through the penetrating holes 16 on a right side duct 11. After a lapse of specified time, when all or the rest of the fans 15 are inversely or normally rotated, respectively, the direction of the air stream is reversed, thus forming in the chamber an air circulation flow with its direction reversed at regular time intervals.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a fermentation apparatus for fermenting foods such as donuts and bread.

(b) Conventional technology Conventionally, this type of device was
There is a fermentation device like this. This fermentation device has multiple exhaust holes in the top wall of the fermentation chamber, which the user opens and closes to exhaust overtemperature and humid air to create an even temperature distribution inside the chamber. and humidity distribution.

However, with this method, the user needs to check and judge the condition inside the refrigerator, and it is also necessary to manually open and close the exhaust hole, making it difficult to maintain uniform temperature and humidity distribution inside the refrigerator at all times. was difficult. Therefore, an improved fermentation apparatus shown in FIG. 5 has been proposed.

The structure is such that a duct is formed on the bottom surface 1a and the back surface 2a of a refrigerator interior 7 equipped with a door 8, and a heating heater 3 is provided inside the bottom surface duct 1.
A humidifier 4 and an air circulation fan 5 having a fan motor 5a are provided, and the back duct 2 is provided with an outlet 6 for circulating air. This device uses a fan to forcefully circulate the air inside the refrigerator, automatically ensuring an even temperature and humidity distribution at all times.

(c) Problems to be solved by the invention However, in the conventional fermentation apparatus shown in FIG.
For example, when donut dough is fermented.

Donuts fermented in a place where there is a lot of wind near the discharge hole 6 on the back have a nearly circular cross-sectional shape and are well fermented, but donuts that are fermented in a place where there is little wind on the side of the door 8 spread widely. , the cross section became elliptical, resulting in poor fermentation. Similarly.

Even when bread dough is fermented, there is a disadvantage that there is a difference in fermentation state between the vicinity of the discharge chamber 6 and the side of the door 8.

The present invention has been made in view of the above points, and an object of the present invention is to provide a fermentation device that allows bread dough placed anywhere on a rack to be evenly fermented.

(d) Means for Solving the Problems The present invention forms ducts on the bottom, right, and left sides of the refrigerator, and inside the bottom duct is a heating/humidifying unit consisting of a heater, a humidifier, and an air circulation fan. In the fermentation apparatus, the right side duct and the left side duct are provided with a plurality of through holes for communicating the inside of the duct and the inside of the warehouse, and a plurality of mesh shelves are arranged inside the warehouse. The fan shall be capable of forward and reverse rotation, and shall be controlled to repeat forward and reverse rotation in a certain fixed cycle, or multiple air circulation fans shall be provided, with the negative part of the fan being in the direction of the air flow. is opposite to that of the other fans, and the fan in the positive flow direction and the fan in the opposite flow direction are alternately operated in a certain cycle.

(E) Operation When the air circulation fan initially rotates normally, or when some of the air circulation fans provided rotate, air is discharged into the refrigerator from the through hole of the left side duct, for example, and the air is discharged from the right side duct. A unidirectional flow is created that is sucked into the through hole. After the airway flow in this direction for a certain period of time, the air circulation fan is reversed or the remaining air circulation fans are rotated. Then, the air flow also flows in the completely opposite direction, that is, from the through hole of the right side duct to the through hole of the left side duct.

As a result, an air circulation flow is formed in the refrigerator that changes direction alternately for a certain period of time, and the blowing of the air to the bread dough on the rack is averaged, and the fermentation state of the dough placed anywhere on the rack is not biased. This will ensure uniform fermentation.

(f) Example An embodiment of the present invention will be described below based on the drawings.

First, the structure of the fermentation apparatus of the present invention will be explained based on FIG.

Reference numeral 20 denotes a fermentation apparatus main body whose front opening is covered with a door 8 made of a heat insulating material, and whose left and right sides, top surface, back surface and bottom surface are covered with heat insulating walls 19. A partition wall 21 is provided in the chamber 7 so that ducts are formed along the bottom and left and right sides, and a bottom duct 10 and a right duct 1 are provided.
1 and a left side duct 12 are formed. Bottom duct 1
A heater 13, a humidifier 14, and an air circulation fan 15 are provided inside the room. 15a is its fan motor. On the other hand, the cloth surface duct 11 and the left surface duct 1
2, the partition wall 21 is provided with a plurality of through holes 16 that communicate the inside of the duct and the inside of the refrigerator 7, and a wind direction plate 17 is attached above each of the through holes 16 to straighten the circulating air. has been done. And on the inside 7 side, there is a net shelf 22...
- A plurality of shelf supports 18 are fixedly installed to receive the shelf.

By the way, the air circulation fan 15 is capable of forward and reverse rotation, and repeats forward and reverse rotation in a certain cycle, or a plurality of air circulation fans are provided, some of which rotate in the direction of air flow. is opposite to the other fans, and the fan in the positive flow direction and the fan in the opposite flow direction are configured to be operated alternately in a certain cycle. Thereby, the through holes 16 provided in the right side duct 11 and the left side duct 12.

In a certain cycle, the outlet and suction ports for circulating air alternately change. In the figure, the right side duct 11 is indicated by the dotted arrow.
The circulating air flowing from the left side duct 12 to the left side duct 12 is shown, and the opposite circulating air flow is shown by solid arrows. The direction of the solid line is the positive flow direction of air, and the direction of the dotted line is the reverse flow direction. Therefore, when donut dough is placed on a mesh rack and fermented for one time, the wind exposure of each donut dough is averaged, so
There is no difference in fermentation status.

Next, specific control means for causing the air circulation fan 15 to flow circulating air in different forward and reverse directions into the refrigerator interior 17 in a constant cycle will be explained with reference to FIGS. 2 to 4.

Figures 2 and 3 show the case of a system in which the fan motor 15a of the air circulation fan 15 is rotated in the forward and reverse directions, and are related to the drive control of the three-phase fan motor IM23 and the single-phase fan motor 24, respectively. .

First, in FIG. 2, a three-phase 200V induction type fan motor 23 connected to a three-phase power supply (terminals R, S, and T) has two S-phase and T-phase switching contacts 25a and 2.
Power is supplied via 5b. A control circuit 26 is provided to control the switching contacts 25a and 25b. The control circuit 26 has a circuit configuration in which a timer 728 and a relay circuit are connected in parallel to the power supply 27, and the timer contact 2 of the timer 28
9 is inserted into the relay circuit, and the relay X30 and timer contact 29 are connected in series. 31 is a power switch. In this circuit, the timer 28 maintains its timer contact 29 on or off at predetermined time intervals. Therefore, while the timer contact 29 is OFF, the relay 30 does not operate, and the switching contact 25a, which is a relay contact.

25b is switched to the solid line state shown in the figure, and the fan motor 2
3 rotates forward. Therefore, as shown in FIG.
The fan 1 for air circulation inside the duct enters the through hole 16 of the duct.
5. It communicates with the humidifier 14 and the heating heater 13, and air circulates in the direction of the solid line arrow. Timer 28 after a certain period of time
closes its timer contact 29. This activates the relay 30 and switches its switching contacts 25a, 25b from the a side to the b side. As a result, two of the three phases (S phase and T phase) supplied to the fan motor 23 are reversed from before switching, and the fan motor 23 is reversed. Therefore, the air circulated by the fan motor 23 flows into the refrigerator interior 7 through the through hole 16 of the right side duct 11 and flows into the through hole 16 of the left side duct 12 as indicated by the dotted arrow. In this way, the direction of the air flowing through the inside of the refrigerator 7 changes at regular intervals, so that even the dough on the screen shelf 22 is exposed to the air even if it is close to the through-holes 16 and 16. Fermentation of bread dough takes place evenly.

FIG. 3 shows an embodiment in which a capacitor run type single-phase induction machine is used as the fan motor 15a. In this case as well, the relay 34 is controlled via the timer contact 33 by the timer 32, and the relay contacts 35a and 35b are alternately switched to determine whether the capacitor C is connected to the motor winding 24a or the motor winding 24b. Then, the phase of the power supplied to the fan motor 24 is reversely shifted to cause forward and reverse rotation. 31 is a power switch.

Fig. 4 shows a plurality of air circulation fans 15, some of which generate air in the positive direction, and the remaining fans generate air in the opposite direction by 180 degrees. A circuit configuration diagram is shown in which the devices are installed in opposite directions and their operation is controlled alternately. In the figure, two air circulation fans 40M, 41M are used for convenience of explanation, but it is of course possible to use two or more fans. Fan motor M2 is for forward air flow, and fan motor M1 is for reverse air flow. The relay 42 is supplied with power through the timer contact 44 of the timer 43, and the relay contacts 45a and 45b cause the fan motor M,
40 is connected to the power supply 27 or another fan motor M2
41 is connected or not at regular intervals. That is, while the timer contact 44 is OFF, the fan motor M24
2 is in operation, and the fan motor Mi42 is stopped. This results in airflow circulation in the direction of the solid line shown in FIG.

While the timer contact 44 is ON, the fan motor M
140 is in operation, the fan motor M241 is stopped, and the air circulates in the opposite direction in the direction of the dotted line. 31 is a power switch. In this example, a heating/humidifying unit consisting of a heating heater, a humidifier, and an air circulation fan is installed in the bottom duct inside the refrigerator, but a new duct is installed on the top or back side of the refrigerator. A similar effect can be obtained by arranging a heating and humidifying unit within the duct.

(g) Effects of the invention According to the present invention as described above.

By making the air circulation fan capable of forward and reverse rotation, and repeating forward and reverse rotation in a certain cycle, the amount of air that hits the food that needs to be fermented, such as donuts or bread dough, in the oven during fermentation is averaged, and the fermentation process is improved. There will be no variation in condition.

In addition, multiple air circulation fans are installed, and some of them have the air flow direction opposite to the other fans, and in a certain cycle, the fan with the positive flow direction and the fan with the opposite flow direction alternate. By adopting a configuration in which the fermentation system is operated at the same time, variations in the fermentation state are similarly eliminated. In this way, any bread dough on the rack can be fermented evenly, and all of the dough can be commercialized without wasting materials, resulting in a highly practical fermentation device.

[Brief explanation of the drawing]

FIG. 1 is a schematic structural diagram of the fermentation apparatus according to the present invention, (a
) is a longitudinal front view, (b) is a longitudinal side view, (c) is a cross-sectional plan view, and Figs. 2 and 3 show the direction of the air flow inside the refrigerator by alternating the directions of the air circulation fan. Figure 2 is a control circuit diagram based on the method of replacing it with . Figure 2 is a control circuit diagram when a 3-phase induction fan motor is used, Figure 3 is a control circuit diagram when a capacitor type single-phase induction fan motor is used, and Figure 4 is a control circuit diagram based on the method of replacing. A control circuit diagram based on a method in which multiple air circulation fans are installed in advance in opposite directions so that air flows in opposite directions during operation, and they are operated alternately. Figure 5 shows a conventional fermentation device. FIG. 10...bottom duct, 11...right duct, 12.
...Left side duct, 1 piece...Heating heater, 14...
Humidifier, 15... Air circulation fan, 15a... Fan motor, 16... Penetration opening, 18... Shelf support, 2
2... Net shelf, 23... Three-phase induction fan motor,
24... Capacitor run type single phase induction fan motor,
40.41...Fan motor installed in the opposite direction.

Claims (1)

[Claims] (1) Ducts are formed on the bottom, right, and left sides of the refrigerator, and a heating/humidification unit consisting of a heating heater, a humidifier, and an air circulation fan is installed in the bottom duct, and the right and left ducts are installed in the bottom duct. In the fermentation apparatus, the air circulation fan is capable of forward and reverse rotation, in which a plurality of through-holes are provided to communicate between the inside of the duct and the inside of the warehouse, and a plurality of mesh shelves are arranged inside the warehouse. , and shall be controlled to repeat forward and reverse rotation in a certain fixed cycle, or shall be provided with multiple air circulation fans,
The airflow direction of some of the fans is opposite to that of the other fans, and the fan in the positive flow direction and the fan in the opposite flow direction are alternately operated in a certain cycle. Fermentation equipment with special features.