JPS6227850B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for humidifying polished rice.

When moistening the polished rice by contacting the layer of polished rice with a moisture-containing gas, it is especially important to humidify the polished rice, which has been polished in a rice mill and heated to a temperature of 35℃ or higher, to contain moisture at room temperature of about 15℃. When a gas is used, the moisture-containing gas comes into contact with the milled rice, increasing its temperature and lowering the relative humidity in the gas, resulting in insufficient humidification of the milled rice, and in some cases, the milled rice may warp. It may dry out white rice.

In particular, at the end of the layer of polished rice through which the gas containing moisture passes, the moisture in the gas is absorbed by the polished rice and the temperature of the gas increases significantly due to the polished rice, so the relative humidity in the gas decreases. As a result, cracks occur in the polished rice and its quality deteriorates significantly.

The present invention addresses the above-mentioned problems and provides a milled and humidified method and an apparatus thereof that can produce high-quality milled rice without cracking the milled rice at any location in the layers of the milled rice. The purpose is to

To achieve this objective, the method for humidifying polished rice of the present invention is characterized in that when the polished rice is brought into contact with the gas containing moisture, the temperature of the gas containing moisture is made higher than the temperature of the polished rice. .

Further, the milled rice humidifying device of the present invention has a rice grain supply port and a rice grain discharge port provided in a container, and a gas supply section provided on one side of the container which is provided with a gas humidifying device and a gas heating device. In addition to connecting the devices, a gas discharge section is provided on the other side, a temperature sensor provided at the rice grain supply port and a temperature sensor provided at the gas supply section are connected to a comparison circuit, and this comparison circuit is connected via a control circuit. It is characterized by being connected to a gas heating device.

An example of an apparatus for carrying out the present invention will be explained with reference to the drawings. Reference numeral 8 is a rice milling machine, and the upper rice grain supply section 7
and a polishing chamber 4 formed by rotatably incorporating a friction polishing trochanter 3 with ventilation holes 2 in a porous-walled bran-refining cylinder 1.
and has.

Reference numeral 9 denotes a rice grain heating and humidifying device, which includes a plurality of rows of flowbeds 12 made of plates with open lower ends to provide an open part 10 and upper ends joined to form a joint part 11;
A plurality of stages are arranged in a container 15 having a rice grain supply port 13 at the top and a rice grain discharge port 14 at the bottom, alternately staggered up and down. The supply device 16 is connected by a supply section 17 and each of the remaining fluidized beds 12
The open lower end of the rice mill is connected to the air discharge section 18 through a discharge chamber 19, and the supply port 13 is connected to the discharge section 5 of the rice mill 8 via a grain lifting machine 6.

The air supply device 16 is provided with an air heating device 20 such as an electric heater and an air humidifying device 22 such as a steam generator, and opens into the rice grain passage between the flowbeds 12 of the rice grain heating and humidifying device 9.

The air supply section 17 is provided with a temperature sensor 23, and the rice grain supply port 13 is provided with a temperature sensor 24. These temperature sensors 23 and 24 are connected to a comparison circuit 25, which is connected to the control circuit 2.
6 to an air warming device 20.

Therefore, the rice grains supplied from the supply port 13 to the rice grain heating and humidifying device 9 are
Upper end joint 11 of multiple flowbeds 12 when descending inside
The air is separated by air, heated by the air heating device 20, humidified by the air humidification device 22, and stirred and humidified by the heated humidified air supplied from the lower end openings of the plurality of flowbeds 12 arranged in alternate stages. , is discharged from the discharge port 14.

The air that is supplied from a plurality of alternately arranged fluidized beds 12 and has finished heating and humidifying the rice grains is discharged to the outside from the air discharge section 18 via the open lower end portion 10 of each of the remaining fluidized beds 12.

Polished rice at a temperature of 40° C. supplied from the supply port 13 to the rice grain heating and humidifying device 9 is humidified by warm and humid air at a temperature of 50° C. supplied from the air supply device 16.

The rice polishing machine is not limited to the friction type as in the above embodiment, but also includes a grinding type that uses a grindstone as the polishing trochanter, and a rice polishing machine that has a trochanter made of a cylindrical body covered with a flexible material inside the covered barrel. A rice machine may also be used. In addition, a water-adding friction rice polishing machine can also be used as a friction rice polishing machine, and the rice grain heating and humidifying device may be of a screen type or a double type, or an alternate ventilation type that alternately blows and exhausts air. You can also use.

The temperature of the air heating device 20 is the same as that of the rice grain heating and humidifying device 9.
The temperature sensor 24 provided at the rice grain supply port 13 and the temperature sensor 23 provided at the air supply section 17 are connected to the comparison circuit 2.
5, the control circuit 2 is controlled by the signal emitted from the comparison circuit 25 so that the temperature of the air supply section 17 always shows a higher value than the temperature of the rice grain supply port 13.
6 to adjust the heating amount of the air heating device 20.

As described above, the method for humidifying polished rice of the present invention is characterized in that when the polished rice is brought into contact with the gas containing moisture, the temperature of the gas containing moisture is made higher than the temperature of the polished rice. , the temperature of the water-containing gas does not increase when it comes into contact with the milled rice, and therefore the relative humidity of the water-containing gas does not decrease and become over-dry, so that the milled rice can be heated at any position. It is possible to obtain high-quality products without drying and without cracking.

Further, the polished rice humidifying device of the present invention is a gas supply device in which a rice grain supply port and a rice grain discharge port are provided in a container, and a gas humidification device and a gas heating device are provided in a gas supply section provided on one side of the container. At the same time, a gas discharge section is provided on the other side, the temperature sensor provided at the rice grain supply port and the temperature sensor provided at the gas supply section are connected to a comparison circuit, and this comparison circuit is connected to the gas discharge section via a control circuit. Since the device is characterized in that it is connected to a heating device, the method can be performed automatically.

Note that the gas containing moisture refers to air and other gases containing steam, fog, etc.

[Brief explanation of the drawing]

The drawing is a partially cutaway front view of an apparatus for carrying out the invention. 8...Rice milling machine, 9...Rice grain heating and humidification device, 16...Air supply device, 20...Air warming device, 22...Air humidification device, 23, 24...Temperature sensor, 25...Comparison circuit, 26...Control circuit.

Claims (1)

[Scope of Claims] 1. A method for humidifying polished rice in which polished rice is brought into contact with a gas containing moisture, characterized in that the temperature of the gas containing moisture is made higher than the temperature of the polished rice. 2. A rice grain supply port and a rice grain discharge port are provided in the container, and a gas supply device including a gas humidifier and a gas heating device is connected to the gas supply section provided on one side of the container, and a gas supply port provided on the other side is connected to the gas supply section provided on one side of the container. A discharge section is provided, a temperature sensor provided at the rice grain supply port and a temperature sensor provided at the gas supply section are connected to a comparison circuit, and this comparison circuit is connected to the gas heating device via a control circuit. A polished rice humidifier.