JPH08241A - Method for peeling raw chestnut - Google Patents

Abstract

PURPOSE:To provide a method for peeling raw chestnuts by which the peeling of the raw chestnuts in a large amount is automatically and efficiently carried out at a time. CONSTITUTION:This method for peeling raw chestnuts is to initially form a slight cut line in each shell of the raw chestnuts, spray a small amount of water on the many chestnuts, apply waterdrops onto the surfaces, charge the resultant chestnuts having the surfaces in a state of applied waterdrops into a vessel of a cereal puffing machine heated at 110-160 deg.C, seal an inert gas therein, then close a lid, treat the chestnuts while rotating the vessel in a hermetically sealed state, open the lid after the passage of 3-5min and take out the peeled chestnuts.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for peeling raw chestnuts.

[0002]

2. Description of the Related Art Degreasing of raw chestnuts is performed by holding the raw chestnuts in one hand and manually peeling them with a sword held in the other hand.

[0003]

The above-mentioned manual work is very complicated, inefficient and inferior in productivity, and there is a risk of cutting fingers with a knife. The present invention is intended to solve such conventional problems.

[0004]

According to the present invention, the devil's skin of raw chestnut is first scratched with a few scratches, and a large number of these are sprayed with a little water to form water droplets on the surface at 110 °-. 16C
It is put into the pot of a grain expander heated to ° C, sealed with inert gas, closed with a lid, and rotated in a sealed state for 3 to 5 minutes, and then the lid is opened and taken out. To do.

[0005]

[Operation] A large amount of raw chestnuts is put into the rotary heating pot of the grain expander at a time, and after a certain period of time, the lid is opened to explode under a depressurized state, and the devil skin is separated from the meat quality.

[0006]

EXAMPLE FIG. 1 shows a raw chestnut a, first of which is the outer skin m
A little scratched line p is inserted. The scratch line p is a simple scratch and is automatically formed by feeding the raw chestnut between the wire rollers arranged under a certain gap or by pressing the needle plate from above during the transfer on the wire mesh belt. Although it can be done, it can be done manually due to simple scratches.

FIG. 2 is a partial cross-sectional view of a pot body of a grain expander used in the present invention, in which 1 is a pot body, 2 is a cover which covers the pot body 1, and is a pot with a flame source (not shown) from below. Body 1
Is made to overheat.

Reference numeral 3 is a lid for sealing the raw material inlet of the pot main body 1, 4 is a shield packing, 5 is a lid receiving member for the lid, and 6 is a lid for receiving the lid into the pot main body 1. An engagement pin 7 for holding the crimped state when crimped is a support shaft for rotating the hook body, and is supported by a bearing 8 on the apparatus body side via bearings 9 and 9 '.

Reference numeral 10 denotes a pulley attached to the rear end of the support shaft 7, which is adapted to rotate the hook main body 1 via a belt 11 by the rotation of a drive motor (not shown). Incidentally, 12
Is a fixed handle for preliminarily fixing the position of the pot body 1 at the time of explosion operation, 13 is a pressure gauge, and 14 is a pressure gauge 1.
3 is a guide hole formed in the support shaft 7 so as to be electrically connected to the support shaft 3.

Although the above construction is the same as the construction of the pot body of the conventional grain expander, in the present invention, the support bolt 15 for supporting the lid body 3 with respect to the lid receiver 5 is formed in a hollow shape, and A check valve portion 16 is provided at the tip of the support bolt 15 so that carbon dioxide gas, which will be described later, can be enclosed in the kettle body.

By the way, the raw chestnut a with the above-mentioned scratch line p
Water was sprayed on a large number of the soybeans to form a state in which water droplets were attached to the surface, and this was put into the pot main body 1 of the grain expander heated to about 110 ° C to 160 ° C, and the lid was closed. And the support bolt 15 that protrudes to the center of the lid
An injection pipe from a carbon dioxide gas cylinder is inserted into the rear edge to inject a fixed amount of carbon dioxide gas.

The carbon dioxide gas is sealed so that the pressure gauge 13 shows 5 kg, and the internal air is replaced with carbon dioxide gas. This is very effective in preventing the oxidation of the fruit quality of the raw chestnut during the baking treatment, and it is possible to use nitrogen gas instead of carbon dioxide gas. Further, not limited to these inert gases, an appropriate amount of dry ice may be crushed and added together with raw chestnut.

In the present invention, however, the pot main body 1 is 110 ° in the coexistence state of the above-mentioned raw chestnut and the inert gas or dry ice.
3 minutes to 5 while rotating under the temperature condition of C to 160 ° C.
After the minute processing, the engagement between the hook receiver 5 and the engagement pin 6 is disengaged, which causes an explosion due to a sudden drop in the pressure in the kettle.

Due to the above-mentioned explosion, the demon skin m of the raw chestnut a in the kettle largely pops off at the boundary of the scratch line p on its surface, and the fruit a'is exposed as shown in FIG. The raw chestnuts are capable of automatically separating the demon skin m from the fruit a'by slowly descending gradually on a diaphragm arranged in a tray form. The demon skin m is Since it is reliably separated from the fruit a ',
Only the fruit a'can be easily taken out even by simple manual operation.

In the present invention, the raw chestnuts that are explosively treated and taken out from the pot body can be immediately put into a water tank to be cooled. This is extremely effective in preventing the color change of the fruit quality due to the oxidation in contact with air.

[0016]

INDUSTRIAL APPLICABILITY As described above, the present invention is capable of automatically and efficiently peeling a large amount of raw chestnut a at one time by using a grain expander, and damaging the fruit quality a ′ itself. It does not impair quality. still,
It is important to keep the temperature of the kettle body as high as possible so as not to change the quality of the fruit a ', and therefore the use of dry ice is extremely effective.
In addition, the heating temperature of the pot main body is set to 110 ° to 160 ° C., and the treatment time is set to about 3 to 5 minutes because extremely excellent results have been obtained from many experiments by the present inventors.

[Brief description of drawings]

FIG. 1 is a perspective view of a raw chestnut for carrying out the method of the present invention.

FIG. 2 is a partial cross-sectional view of a pot body of a grain expander for carrying out the method of the present invention.

FIG. 3 is a perspective view of the raw chestnut treated with a grain expander.

[Explanation of symbols]

 a Raw chestnut p Wound line 1 Kettle body 3 Lid body 5 Lid body receiver 7 Spindle 10 Pulley 12 Fixed handle 13 Pressure gauge 16 Check valve part

Claims (3)

[Claims] 1. A slight scratch line is first attached to the raw chestnut demon skin,
A small amount of water is sprayed onto many of these and water droplets adhered to the surface are put into a pot of a grain expander heated to 110 ° to 160 ° C, and an inert gas is sealed, and then the lid is closed. A method for peeling raw chestnut, which comprises rotating the container in a sealed state for 3 to 5 minutes and then opening and removing the lid. 2. The method for peeling raw chestnut according to claim 1, wherein the inert gas is carbon dioxide gas. 3. The method for peeling raw chestnut according to claim 1, wherein an appropriate amount of dry ice is crushed and enclosed instead of carbon dioxide gas.