JP2003052346A - Method and machine for roasting chestnut - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for roasting chestnut without using hot pebbles causing danger in the roasting work of chestnut and safely and easily giving readily crackable and uniformly roast chestnut having excellent luster and good taste and provide a roasting machine. SOLUTION: Chestnut can be roasted at a low temperature compared with conventional chestnut roasting method by heating a vessel having a ceramic layer on the inner surface from outside for easily roasting the chestnut with the radiated far infrared rays by a compact apparatus without using hot pebbles. The cracking of the top of chestnut shell is highly dependent upon the water content of the chestnut in roasting. Taking consideration of these findings, chestnuts and air-permeable porous ores or ceramics are charged at a prescribed ratio to a heating vessel having a ceramic layer on the inner surface and heated for a prescribed period, additional porous ores or ceramics impregnated with a water-soluble sugar are charged to the vessel and the heating of the vessel is continued for a prescribed period.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to roasting (baking) chestnuts.
The present invention relates to a chestnut roasting method and a roasting machine thereof that can be baked simply and safely without using roasting stones such as pebbles or the like, with no unevenness in baking, and with good luster and flavor.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing roasted chestnuts such as Tianjin Amamuri, an open-type iron pot, a stainless steel pot, a casting pot, etc. have been installed in the vertical direction, and pebbles are put in them to preheat them. It is common to add chestnuts to the mixture, bake it while stirring it with a rotary blade, and then add starch syrup to polish it.

However, in such a method, a high level of skill is required for stirring, including the heating condition of pebbles, the addition of chestnuts, and the addition and modification of starch syrup, and not only the uneven roasting and flavor of chestnuts easily occur, but also the roasted stones There is a risk that some chestnuts will be repelled when mixed and baked with the chestnut, and there is a danger that pebbles will jump out of the top of the open pan in reaction and hit workers, etc. A relatively large drive source was required, and further, equipment and work such as a sieving net and a frying net for separating the baked chestnuts from pebbles were necessary. At that time, there was a danger that pebbles would scatter.

[0004]

SUMMARY OF THE INVENTION In view of the above situation, the present invention eliminates the use of a roasting stone, which is dangerous when firing chestnuts, is safe and easy, and has no unevenness of baking and a glossy finish. An object of the present invention is to provide a method of roasting chestnut and a roasting machine thereof, which has good quality, is easy to peel, and can be baked with a good flavor.

[0005]

According to the present invention, in order to stop the use of calcinated stones and bake them easily with a compact device, a container having a ceramic layer on the inside is heated from the outside, and the radiation effect of far infrared rays is generated. , As compared with the conventional chestnut baking method, paying attention to that it can be roasted at a low temperature, and as a result of careful investigation, the skin of the tip of the chestnut is cracked, and the repellency is the effect of moisture during roasting Has been found to be large.

According to the first aspect of the present invention, chestnuts and breathable ore or ceramics having porous holes are charged at a predetermined ratio into a heating container having a ceramics layer inside and heated for a predetermined time. Then, the ore or the ceramics having the porous pores impregnated with the water-soluble sugar is additionally charged, and the chestnut is roasted by heating for a predetermined time.

Here, the heating container having a ceramics layer on the inner side is a container whose main body is made of metal such as stainless steel or iron, and the ceramics layer is thermally sprayed on the inner side by plasma coating or gas coating. In addition, the container itself may be made of ceramics like ceramics for the purpose of emitting far infrared rays, but there is a risk of cracking by impact etc. The one coated is preferable.

[0008] Further, when roasting chestnuts, a breathable ore or ceramics having porous holes was added at a predetermined ratio for the following reason. When only the chestnuts are added and roasted, steam generated when the chestnuts are heated by far infrared rays, etc. is released to the outside as it is, the chestnut skin is dried and many of the chestnut skins are cracked. However, if pumice-shaped ore or ceramics with innumerable porous holes is added, they absorb moisture released from chestnuts and moisturize the area around chestnuts appropriately, The skin of this is no longer broken and repelled. Therefore, the ore or ceramic having the porous holes is not particularly limited as long as it is hygroscopic and can withstand the roasting temperature.

As described above, it is possible to prevent the chestnut skin from cracking during roasting by mixing the chestnut and the ore having porous pores at a predetermined ratio, and for the time being, evenly baking. However, the glossiness of the surface of the chestnut skin was insufficient due to blowing components such as tannin that ooze out on the surface of the chestnut skin. Therefore, the present inventor, as a result of further detailed investigation, roasted chestnuts obtained by dipping and impregnating water-soluble sugars such as starch syrup or the like in the above-mentioned ores or ceramics having porous pores as they are or by diluting them with water. The roasted chestnuts having a glossy surface and good taste were obtained by pouring from the middle and roasting for a predetermined time. Here, the cloth bag is not particularly limited to cotton as long as it can reduce the impact on chestnuts, but cotton is preferable in consideration of heat resistance and hygroscopicity.

According to the second aspect of the present invention, if the ore or ceramics having porous holes is directly added together with the chestnut, the ore or ceramics directly contacts the chestnut during roasting, and the impact at that time causes the chestnut tip skin to peel. In order to soften this impact and improve the convenience of handling the ore or ceramics, a small cloth bag made of a plurality of cotton ores or ores having the above-mentioned porous holes is formed for the purpose of softening the impact and improving the convenience of handling the ore or ceramics. It was put in and used.

The invention according to claim 3 relates to a roasting machine used in the roasting method of chestnut according to claim 1 or 2. As a compact device that can easily roast chestnuts,
A cylindrical container-shaped drum having a ceramics layer inside is rotatably supported in a substantially horizontal direction, and a heating means is provided outside the drum, and a dehumidifying means for discharging steam and the like generated in the drum is provided. It was a roasting machine. in this way,
Since the heating container is a cylindrical container-shaped drum body and is rotatably supported in a substantially horizontal direction, it can be rotated with a simple structure from one side in the lateral direction of the drum by a motor drive and the other in the lateral direction of the drum. It is possible to easily provide a chimney-shaped dehumidifying means on one side of the. As the means for heating from the outside of the rotating drum, various means such as a gas burner and an electric heater can be used.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below. FIG. 1 shows an external perspective view of an example of a chestnut roasting machine used in the present invention, and FIG. 2 shows a side view. A ceramic layer is plasma-coated on the inner side of the substantially cylindrical drum body 1, and a stirring blade 11 for stirring chestnuts and the like is attached as shown in FIG. Further, the tip portion 11a of this stirring blade is bent into an R shape in order to reduce the impact when the chestnut hits. As shown in FIG. 2, a drum main body bottom flange 12 and a lid side flange 13 are provided in front of and behind the drum main body 1, and the drum bottom 2 is attached to the drum main body bottom flange 12 with a screw or the like. The rotating plate 21a provided
Is rotatably received by drum bottom receiving pulleys 22a and 22b provided at the rear of the drum receiving table of the drum receiving table 6. On the other hand, as shown in FIG. 1, the lid-side flange 13 is attached to the lid-attaching portion 31 via a hinge 32 or the like so that the lid 3 can be opened and closed. It is rotatably received by the lid side receiving pulleys 34a and 34b provided on the front part 62.

As shown in FIGS. 2 and 3, the drive gear 21 is attached to the drum bottom portion 2, and the drive gear 24 is connected to the drive motor 26 provided at the rear portion 61 of the drum pedestal via the reduction gear 25. Then, the drum rotates via the drive gear 21. The handle 23 provided on the drum bottom portion 2 is used to lift the bottom portion of the drum and tilt the drum forward when picking chestnuts and the like.

A moisture removal hole 33 is provided on the side of the cover 3 of the drum, and the moisture removal cylinder 4 removes moisture by leaving a predetermined gap with the moisture removal hole 33 so as not to interfere when the drum rotates. Cylinder support 4
3 is disposed so as to be openable and closable to the left and right via a moisture removal tube mounting arm 42. A dehumidifying cylinder bottom container 41 is detachably provided at the bottom of the dehumidifying cylinder.

Next, a method of roasting chestnuts using such a chestnut roaster will be described. The size of the roasting machine according to the present invention can be freely changed according to the amount required for one roasting and the frequency of use, but here, the inner diameter of the drum body is 30 cm, and the depth is 50 cm. An example in which the size of is used is shown below.

Chestnuts in the drum were about 6 kg, and there were pumice-like small porous holes as shown in FIG.
An ore 8 of about 5 mm, such as a doorstone, is shown in FIG.
20 to 40 pieces packed in a cotton cloth bag 7 of 5 cm in size are put together, externally heated with a gas burner while rotating the drum, and roasted for about 15 to 20 minutes, and then porous holes The ore was packed in a cotton cloth bag of 3 to 5 cm in size, diluted with starch syrup with water, and added with 5 to 20 pieces that had been impregnated in advance, and further roasted for 5 to 15 minutes. Roasted. Here, the heating temperature and the heating time are adjusted according to the size of the roasting machine and the amount of chestnut input, but since the heating container provided with the ceramic layer inside is used,
Even if the burner flame temperature was 800 to 850 ° C, the surface of the ceramic layer in the container was relatively low at 200 to 250 ° C. As a result, a roasted chestnut was obtained which had a smooth surface of the chestnut skin and was free from cracks and uneven baking.
The yield was about 5 kg.

[0017]

The present invention employs a roasting method in which a drum-shaped heating container coated with ceramics on the inside is used to externally heat while rotating. You can easily roast chestnuts evenly. In addition, when roasting, a predetermined amount of breathable ore or ceramics with porous holes was added, so it can be roasted without cracking the skin of the chestnut tip, and further sugar content such as starch syrup By additionally adding the impregnated ore or the like, the tannin and the like on the surface of the chestnut skin can be removed, and the chestnut skin also has a good luster. At this time, if the ore or the like is packed in a cotton cloth bag little by little and used, the impact on the chestnut can be further softened and cracking of the chestnut skin can be prevented. In addition, when the roasting method according to the present invention is used, the chestnut and the skin are easily peeled off, the skin is easily peeled off, and the far infrared effect makes it possible to bake with a better flavor.

[Brief description of drawings]

FIG. 1 shows a lid side perspective view of an example of a roasting machine according to the present invention.

FIG. 2 shows a side view of an example of a roasting machine according to the invention.

FIG. 3 shows a positional relationship of main parts of a drive unit. (A-A direction main part sectional view)

FIG. 4 shows the blade in the drum.

FIG. 5 shows a cloth bag made of cotton.

FIG. 6 shows an external view of an ore.

[Explanation of symbols]

1 drum body 11 stirring blade 11a Stirring blade tip 12 Drum body bottom flange 13 Drum body lid side flange 2 drum bottom 21 drive gear 21a Rotating plate 22a, 22b, drum bottom receiving pulley 23 handle 24 drive gear 25 reducer 26 Drive motor 3 lid 31 Lid attachment part 32 hinges 33 Dehumidification hole 34a, 34b Lid side receiving pulley 4 dehumidifier 41 Dehumidification Cylinder Bottom Container 42 Dehumidification cylinder mounting arm 43 Exhaust tube support 5 heat sources 6 drum cradle 61 Rear of drum stand 62 front part of drum support 7 Cotton cloth bag 8 ore

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Claims (3)

[Claims] 1. Chestnuts and breathable ore or ceramics having porous holes are charged at a predetermined ratio into a heating container having a ceramics layer on the inside, and heated for a predetermined time, and then water-soluble. The above-mentioned porous ore impregnated with the sugar of
Furthermore, the roasting method of the chestnut characterized by heating for a predetermined time. 2. The method for roasting chestnut according to claim 1, wherein ores or ceramics having porous holes are put in a cloth bag made of cotton for use. 3. A cylindrical container-shaped drum having a ceramics layer on the inside thereof is rotatably supported in a substantially horizontal direction, a heating means is provided outside the drum, and a steam or the like generated in the drum is discharged. A roasting machine used in the method of roasting chestnut according to claim 1 or 2, further comprising a wetting means.