JP6938458B2 - Eggshell crack generator for boiled eggs - Google Patents

Description

The present invention relates to a boiled egg shell crack generator, and more particularly to a boiled egg shell crack generator suitable for forming a crack in a soft-boiled egg shell having an extremely soft egg white.

In order to peel a boiled egg, the eggshell must first be impacted to cause a crack, which can be done manually for a small amount of boiled egg, but relies on a machine for a large amount. I have no choice but to do it. Therefore, conventionally, for example, a device for generating a crack in a boiled egg as seen in Patent Documents 1 to 3 has been proposed.

In Patent Document 1, the outer peripheral portions of the two ring plates are connected by a large number of rods arranged in the circumferential direction to form the inner and outer rod drums A and B, and the inner rods are formed. The outer bar drums B are concentric on the outer side of the drum A, and their axes are horizontal, and they are supported so as to rotate in opposite directions, and the inner and outer bar drums A and B are configured. A large number of boiled egg storage chambers are formed on the outer peripheral portion of the outer bar drum B along the circumferential direction by each of the bars and a pair of partition rings provided on the outer bar drum B. The automatic splitting device is disclosed. In this device, boiled eggs are put into and stored in each egg storage chamber, and while the boiled eggs are moved in the circumferential direction while a water shower is sprayed from a shower device arranged directly above each bar drum A or B, the boiled eggs are moved in the circumferential direction. The boiled egg is made to collide with each of the above-mentioned rods, and then the egg is split.

Patent Document 2 describes an improved version of the apparatus disclosed in Patent Document 1, wherein the rod material of the inner rod material drum A is a straight round bar and a deformed round bar in which concave portions and convex portions are alternately provided. While rotating the boiled egg stored in the boiled egg storage chamber, the boiled egg is collided with the straight round bar and then split, and the boiled egg is placed in contact with the deformed round bar to determine the storage position of the boiled egg. An automatic splitting device for boiled eggs that changes its rotational posture irregularly has been disclosed. According to this device, a boiled egg housed in a boiled egg storage chamber is brought into contact with a concave portion or a convex portion provided on a bar material of an inner bar material drum to irregularly change its rotational posture. Therefore, the whole boiled egg can be cracked without damaging the white part of the boiled egg. As a result, it is said that the peeling in the next process becomes easy and the total man-hours are reduced.

Patent Document 3 is composed of a polygonal cylindrical rotating body in which a body portion is surrounded by a wire mesh and is provided so as to be inclined in the longitudinal direction. An egg cracking device is disclosed. According to this device, the boiled egg rolls and collides with the wire net that surrounds the body, and the boiled egg receives an impact each time it collides. It is said that the egg white and yolk of the boiled egg will not collapse due to an unreasonable impact during the cracking work, and the work can be done with good yield.

Special Fair 7-108208 Gazette Japanese Patent No. 3683874 Jikken Sho 57-26639

However, each of the above-mentioned conventional devices has the following problems.

Since the apparatus disclosed in Patent Documents 1 and 2 employs a double-structured drum using a large number of rods, the number of parts constituting the apparatus is extremely large, and the structure is large. Due to the complexity, the manufacturing cost of the device is high, and there are problems that it is difficult to clean the scattered eggshell fragments, maintenance is complicated, and miniaturization is difficult.

On the other hand, in the device disclosed in Patent Document 3, the structure is very simple because the body portion in which the wire mesh is formed into a polygonal cylinder is simply rotated around the axis thereof, and the structure is very simple. The above-mentioned problem in 2 is not recognized. However, since the boiled egg is simply rolled in the body, the boiled egg tends to roll mainly in the body around the long axis due to its own shape, that is, the boiled egg. There is no irregularity in the rotational posture, and as a result, cracks are less likely to occur at the sharp and blunt ends of the boiled egg, and when cracks are formed in the eggshell, the eggshell and the eggshell membrane inside it. When water is infiltrated between the eggs and the eggshell, the subsequent shelling work becomes extremely easy, but there is a problem that the shelling work is difficult because the eggshell cracks are generated in a dry state. This caused damage to the egg white when the shell was peeled. Further, since the body portion is composed of a wire mesh, there is a problem that it is difficult to clean the scattered eggshell fragments and maintenance is complicated as in Patent Document 1 and Patent Document 2.

The present invention has been made to solve the above-mentioned conventional problems, and the egg white portion is very soft and damaged as compared with the hard-boiled egg as well as the hard-boiled egg having a firm egg white portion. Even for soft-boiled eggs that are easy to make, it is possible to generate cracks evenly over the entire circumference of the eggshell without damaging the egg white part, and the subsequent shell peeling work can be performed extremely easily, and the structure is simple. Therefore, it is an object of the present invention to provide an egg shell fissure generator for a boiled egg, which can reduce the manufacturing cost, facilitate the maintenance, and reduce the size.

In order to achieve the above object, the boiled egg shell crack generator of the present invention scrapes the boiled egg in a direction intersecting the falling direction while rolling the boiled egg in one direction by its own weight in the internal space. A rotating drum, a rotating driving means for rotating the rotating drum around its axis, and a state in which the rotating drum is floated from the start end portion to the end portion of the rotating drum in the internal space of the rotating drum and falls. It is provided with a collision portion for colliding with the boiled egg scraped up by the rotating drum and causing a crack in the eggshell of the boiled egg, and a water supply means for supplying water into the rotating drum. It is characterized by.

Due to this specific matter, not only hard-boiled eggs with a solid egg white part, but also soft-boiled eggs whose egg white part is very soft and easily damaged compared to hard-boiled eggs, the entire circumference of the eggshell without damaging the egg white part. Cracks are evenly generated over the surface. In addition, the water supplied to the rotating drum should not be impacted on the eggshell more than necessary on the boiled egg that falls toward the inner peripheral surface of the rotating drum many times while rolling in the rotating drum. Since it acts as a cushion, it prevents the egg white from being scratched. At the same time, the water infiltrates between the eggshell and the eggshell membrane inside it when a crack is formed in the eggshell, which makes the subsequent shelling work extremely easy. Further, since the number of components is overwhelmingly smaller than that of the conventional device (device disclosed in Patent Document 1 and Patent Document 2), manufacturing cost can be reduced, maintenance can be facilitated, and miniaturization can be achieved. Further, since the scattered eggshell fragments only adhere to the surfaces of the rotating drum and the collision portion, the eggshell fragments can be removed only by spraying washing water on them.

Further, in the above-mentioned boiled egg shell crack generator, an interference portion that interferes with the boiled egg may be provided on the inner peripheral surface of the rotating drum.

This particular item ensures that the boiled egg is scraped up in the rotating drum.

Further, in the above-mentioned boiled egg shell fissure generation device, the interference portion may be composed of a plurality of ridges along the falling direction of the boiled egg.

Due to this particular matter, the boiled egg that has been scraped up collides with the top of the middle ridge while falling under its own weight in the rotating drum, so that a crack can be surely generated in the eggshell of the boiled egg.

Further, in the above-mentioned boiled egg shell crack generator, the front end portion of the ridge is displaced from the rear end portion toward the rotation direction side of the rotating drum, so that the boiled egg moves in the falling direction. On the other hand, it may be installed diagonally.

Due to this particular matter, the boiled egg is moved in a complicated manner when it is scraped up, so that a crack is generated over the entire circumference of the eggshell of the boiled egg.

Further, in the above-mentioned boiled egg shell crack generator, the ridges include a long ridge extending from the start end portion to the end portion of the rotating drum, and a short ridge that is shorter than the long ridge. The long ridges and the short ridges may be alternately arranged on the starting end side of the rotating drum.

Due to this specific matter, the number of ridges in the rotating drum is large on the start end side and small on the end side of the rotating drum, so the number of times the boiled egg collides with the ridges per unit time is the rotating drum. Since it is more on the start end side and less on the end end side, it is possible to generate a crack in the eggshell of a boiled egg in a short time on the start end side of the rotating drum, while on the end side of the rotating drum. Since the collision with the ridge is reduced as compared with the start side, the degree of scraping of the boiled egg for which many cracks have already been generated on the start side is weakened and the impact on the boiled egg is softened. As a result, the egg white portion is further prevented from being scratched.

Further, in the above-mentioned boiled egg shell crack generator, the surface of the collision portion may be an uneven surface.

Due to this specific matter, the boiled egg also collides with the colliding portion at the convex portion, so that a crack is quickly generated in the eggshell.

Further, in the boiled egg shell fissure generation device, the uneven surface may be composed of a plurality of ridges along the longitudinal direction of the collision portion.

Due to this particular matter, the boiled egg that has been scraped up collides with the top of the middle ridge while falling under its own weight in the rotating drum, so that a crack can be surely generated in the eggshell of the boiled egg.

Further, in the above-mentioned boiled egg shell crack generator, the rear end of the collision portion is deviated from the front end portion toward the rotation direction side of the rotating drum, and thus the collision portion and the rotating drum. The width of the boiled egg's falling passage defined between the inner peripheral surface of the boiled egg and the inner peripheral surface of the rotating drum may be gradually narrowed toward the end of the rotating drum.

Due to this specific matter, the boiled egg tends to roll around the short axis of the egg on the starting end side of the rotating drum, so that the sharp end and the blunt end of the egg collide with the rotating drum rather than the body. Since the chance of colliding with the part increases, cracks are generated not only on the peripheral surface of the body of the egg but also on the sharp and blunt ends. In addition, since the falling passage gradually narrows toward the end of the rotating drum, the boiled egg tends to roll around the long axis of the egg, and by the time it reaches this point, it covers almost the entire circumference. A boiled egg, in which water infiltrates between the eggshell and the fetal membrane as a crack is generated and the eggshell is easily peeled off, rolls around the long axis and the eggshell is completely peeled off by the rotating drum and the collision part. Will occur. As a result, it is possible to reduce the amount of work in the shell peeling work, which is a post-process.

Further, in the above-mentioned boiled egg shell crack generator, a pop-out prevention portion for preventing the boiled egg from jumping behind the collision portion during a fall is provided at the upper edge portion of the collision portion. You may be.

Due to this specific matter, even if the boiled egg jumps greatly while falling in the rotating drum, the pop-out prevention portion prevents the boiled egg from jumping behind the collision portion.

According to the present invention, not only a hard-boiled egg having a solid egg white part, but also a soft-boiled egg whose egg white part is much softer and more easily damaged than a hard-boiled egg, without damaging the egg white part. It is possible to generate cracks evenly over the entire circumference of the egg, and it is extremely easy to peel the shell later. The structure is simple, the manufacturing cost is reduced, the maintenance is facilitated, and the size is reduced. It is possible to provide an egg shell fissure generator for boiled eggs that can also be used.

It is a top view of the state in which the rotating drum which shows the eggshell fissure generation apparatus for boiled eggs according to the embodiment of this invention is broken. It is a schematic side view of the eggshell fissure generator for a boiled egg. It is a schematic partial perspective view of the eggshell fissure generator for a boiled egg seen from the start end side of a rotating drum. The conceptual diagram for demonstrating the ridge (interference part) of the rotating drum of the eggshell fissure generator for a boiled egg. It is a schematic front view which looked at the eggshell fissure generator for a boiled egg from the start end side of a rotating drum. It should be noted that the illustration of the deviation form of the ridge is omitted. A modified example of the eggshell crack generator for boiled eggs is shown, and is a schematic front view seen from the start end side of the rotating drum. It should be noted that the illustration of the deviation form of the ridge is omitted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a state in which a rotating drum schematically showing a boiled egg shell crack generator according to an embodiment of the present invention is broken, and FIG. 2 is a schematic side view of the boiled egg shell crack generator. FIG. 3 is a schematic partial perspective view of a boiled egg shell fissure generator viewed from the start end side of the rotating drum, and FIG. 4 is a ridge (interference portion) of the rotating drum of the boiled egg shell fissure generator. FIG. 5 is a schematic front view of a boiled egg shell crack generator as viewed from the start end side of a rotating drum.

<Overall configuration of the device>
As shown in FIGS. 1 to 3, the boiled egg shell fissure generator 1 according to the present invention causes the boiled egg E to fall in one direction by its own weight in the internal space and the boiled egg E to fall in the falling direction. A rotating drum 10 that scrapes up in the intersecting direction, a rotating driving means 20 that rotates the rotating drum 10 around its axis, and a boiled egg E provided in the internal space of the rotating drum 10 along the falling direction of the boiled egg E. It includes a collision portion 30 that collides with a boiled egg that is scraped up by a rotating drum 10 while falling, and a water supply means 40 that supplies water W into the rotating drum 10. Further, in the present embodiment, as shown in FIGS. 1 to 3, an interference portion 50 that interferes with the boiled egg E is provided on the inner peripheral surface of the rotating drum 10. Further, as shown in FIGS. 1 and 2, for example, a gutter-shaped guide for guiding the boiled egg E from the start end portion 11 to the outside of the start end portion 11 of the rotary drum 10 into the internal space of the rotary drum 10. The road 60 is provided on a support base (not shown). Further, below the outer side of the terminal portion 12 of the rotating drum 10, a receiving tray 70 for receiving the boiled eggs E that fall one after another from the terminal portion 12 is provided on a support base (not shown). Here, the receiving tray 70 is pre-filled with water to prevent the boiled egg E falling from the terminal portion 12 of the rotating drum 10 from directly colliding with the bottom surface of the receiving tray 70 and cracking the egg white portion. doing.

<Structure of each part>
Hereinafter, each of the above components will be described in detail.

-Rotating drum-
The rotary drum 10 is made of a metal cylinder having excellent corrosion resistance or a cylindrical body made of a synthetic resin such as a vinyl chloride resin. In the present embodiment, the total length of the rotating drum 10 is about 1 m, and the inner diameter thereof is the inner peripheral surface of the rotating drum 10 when the boiled egg E is rotated, although it depends on the rotation speed of the rotating drum 10 and the size of the boiled egg. The size is such that it does not rotate around, and specifically, it is preferably about 15 cm to 20 cm. The total length and inner diameter of the rotating drum 10 are not limited to the above examples.

As shown in FIG. 2, the rotating drum 10 is mounted on the base 80 in a lying state so that the start end portion 11 side is located at a slightly higher level than the end portion 12 side. Specifically, when the total length of the rotating drum 10 is 1 m, the level difference between the start end portion 11 and the end portion 12 is about 15 mm. That is, the rotating drum 10 is mounted on the base 80 in a lying state so as to have a downward slope toward the terminal portion 12. As a result, the falling speed of the boiled egg E due to its own weight depends on the inclination of the rotating drum 10. The inclination of the rotating drum 10 is actually the total length, the inner diameter, the rotating speed of the rotating drum 10, the mode of the interference portion 50 described later provided on the inner peripheral surface of the rotating drum 10, and the collision portion 30. In consideration of the mode and the like, the falling speed is set so that a crack is generated on the entire peripheral surface of the boiled egg E and the egg white portion is not damaged.

Further, the rotary drum 10 is rotatably mounted around the axis on the base 80. In the present embodiment, as shown in FIGS. 1, 2 and 5, the rotary drum 10 has a pair of support rollers 29 in contact with the outer peripheral surface near the end portion 12 (only one support roller 29 is shown in FIG. 2). And the base 80 via a drive roller 27 that is in contact with the outer peripheral surface of the start end portion 11 of the rotary drum 10 and a driven roller pair 28 that sandwiches the flange portion 13 provided on the outer peripheral edge of the start end portion 11 of the rotary drum 10. It is listed above. Here, the rotating drum 10 is designed so as not to shift toward the end portion 12 side because the flange portion 13 is sandwiched between the driven roller pairs 28.

-Rotation drive means-
The rotation driving means 20 scoops up the boiled egg E by the rotation drum 10 and causes the rotation drum 10 to collide with the collision portion 30 in one direction, specifically, the rotation drum 10 is moved from the start end portion 11 to the axis direction thereof. When the collision portion 30 is viewed in the direction of 3 o'clock, it is rotated counterclockwise (see the arrow R in FIGS. 3 and 5). As shown in FIGS. 1, 2 and 5, in the present embodiment, the drive motor 21 installed on the base 80 near the start end portion 11 of the rotary drum 10 and the drive shaft 22 of the drive motor 21 are attached. The drive pulley 23, the driven pulley 24 which is opposed to the drive pulley 23 on the base 80, the transmission belt 25 erected between the drive pulley 23 and the driven pulley 24, and the driven pulley 24 are coaxial. A drive roller 27, a driven roller pair 28, and a support roller 29, which are provided on the base 80 via a rotating shaft 26 and are pressed against the outer peripheral surface of the rotating drum 10 near the start end portion 11. It is composed of. The drive motor 21 can be started and stopped by a control means (not shown), and its rotation speed can be adjusted. The configuration of the rotation driving means 20 is not limited to the above, as long as the rotating drum 10 can be stably rotated in at least one direction at a predetermined speed. In the present embodiment, the rotation speed is set to about 1200 times / minute, but if a crack can be generated on the entire peripheral surface of the eggshell without damaging the egg white part of the boiled egg E, the rotation speed is particularly high. Not limited.

-Collision part-
As shown in FIGS. 1 to 3 and 5, the collision portion 30 collides with the boiled egg E scraped up by the rotating drum 10 while falling in the internal space of the rotating drum 10, and becomes the eggshell of the boiled egg E. It causes a crack. The collision portion 30 is supported by a support rod 33 inserted in the internal space of the rotary drum 10 so as not to come into contact with the rotary drum 10. That is, the collision portion 30 is installed outside the rotary drum 10 in a state of being floated in the internal space of the rotary drum 10 by a support rod 33 having both ends attached to a pedestal (not shown).

In the present embodiment, the collision portion 30 as described above is composed of an arc-shaped long panel, and is attached to the support rod 33 so that the convex surface 34 side faces the falling passage P side of the boiled egg E. Further, as shown in FIG. 1, the rear end portion 32 of the collision portion 30 is deviated from the front end portion 31 toward the rotation direction side of the rotating drum 10. As a result, the falling passage P of the boiled egg E defined between the collision portion 30 and the inner peripheral surface of the rotating drum 10 is gradually narrowed toward the end portion 12 of the rotating drum 10. When the width of the fall passage P is gradually narrowed toward the end portion 12 of the rotary drum 10, the boiled egg E is around the short axis of the egg on the start end portion 11 side of the rotary drum 10 in which the width of the fall passage P is wide. Since the sharp end and the blunt end of the egg have more chances to collide with the rotating drum 10 and the collision part 30 than the body, respectively, only the peripheral surface of the egg body is used. Fractures are also generated at the sharp and blunt ends. Further, since the falling passage P gradually narrows toward the end portion 12 side of the rotating drum 10, the boiled egg E tends to roll around the long axis of the egg, and thus the entire circumference is reached by this point. The boiled egg E, in which cracks are generated over the surface and water infiltrates between the eggshell and the fetal membrane, making it easier for the eggshell to peel off, rolls around the long axis and collides with the rotating drum 10. In some cases, all the eggshells may be peeled off by 30 and so on. As a result, it is possible to reduce the amount of work in the shell peeling work, which is a post-process.

Further, the surface of the collision portion 30 may be an uneven surface, and in that case, the boiled egg E collides with the convex portion of the collision portion 30, so that a crack is quickly generated in the eggshell. In the present embodiment, as shown in FIGS. 3 and 5, the uneven surface is composed of a plurality of ridges 35 along the longitudinal direction of the collision portion 30. In the illustrated example, the number of the ridges 35 is four, but the number is not limited to this. In this way, when the surface of the collision portion 30 is made uneven by a plurality of ridges 35, the boiled egg E scraped up by the rotating drum 10 falls down the falling passage P by its own weight while the middle ridge 35 Since it collides with the top of the egg, a crack can be surely generated in the shell of the boiled egg E.

The collision portion 30 and the ridge 35 in this manner may be made of either a metal having excellent corrosion resistance or a synthetic resin. In addition to the ridges 35 as described above, the uneven surface of the collision portion 30 may be composed of, for example, a large number of convex portions having a curved surface.

-Water supply means-
The water supply means 40 supplies water W which acts as a cushion to prevent an excessive impact from being applied to the eggshell to the boiled egg E which falls into the falling passage P many times while rolling in the rotating drum 10. At the same time, water is infiltrated between the eggshell and the fetal membrane of the boiled egg E in which the crack is generated in the internal space of the rotating drum 10, so that the eggshell can be easily peeled off. In the present embodiment, the water supply means 40 includes a pump (not shown) and a discharge pipe 41 that discharges water sent from the pump via a pipe (not shown) into the internal space of the start end portion 11 of the rotary drum 10. ing. The discharge pipe 41 is arranged above the guide path 60 of the boiled egg E so that the discharge port 42 faces the internal space of the start end portion 11 of the rotating drum 10. In the present embodiment, the water W is supplied from the start end portion 11 of the rotary drum 10 into the rotary drum 10 by the discharge pipe 41, but the water supply means is not limited to this, and for example, the collision portion 30 or the fall passage P. A shower pipe may be inserted in the rotating drum 10 over the entire length of the rotating drum 10 so as to be located above the above, and shower-like water may be sprayed from the shower pipe toward the falling passage P of the boiled egg E. .. In this case, by adjusting the strength of the jet well, it is desired not only to infiltrate the water between the eggshell and the fetal membrane, but also to peel the shell by the jet of the water.

-Interference part-
The interference unit 50 ensures that the boiled egg E is scraped up by the rotation of the rotating drum 10. In the present embodiment, as shown in FIGS. 1 to 5, the interference portion 50 is composed of a plurality of ridges 51 provided on the inner peripheral surface of the rotating drum 10 along the falling direction of the boiled egg E. There is. The ridges 51 are obliquely provided with respect to the falling direction of the boiled egg E by deviating the front end portion 52 from the rear end portion 53 toward the rotation direction side of the rotating drum 10. When the ridge 51 is slanted in this way, the boiled egg E is moved in a complicated manner when it is scraped up (rotation around the long axis and rotation around the short axis of the egg occur randomly), so that the boiled egg E is boiled. Fractures are generated over the entire circumference of the eggshell of egg E.

Further, as shown in FIG. 4, these ridges 51 are composed of a long ridge 51L extending from the start end portion 11 to the end portion 12 of the rotary drum 10 and a short ridge 51S shorter than the long ridge 51L. These long ridges 51L and short ridges 51S are alternately arranged on the start end portion 11 side of the rotating drum 10. In this way, when the number of ridges 51 in the rotary drum 10 is large on the start end 11 side of the rotary drum 10 and small on the end 12 side, the boiled egg E collides with the ridge 51 per unit time. Since the number of times is large on the start end 11 side of the rotary drum 10 and decrease on the end 12 side, a crack can be generated in the eggshell of the boiled egg E in a short time on the start end 11 side of the rotary drum 10. On the other hand, on the end 12 side of the rotating drum 10, the collision with the ridge 51 is reduced as compared with the start 11 side, so that the impact on the boiled egg E on which many cracks have already been generated on the start 11 side. Is relieved, and as a result, the egg white is further prevented from being scratched.

It should be noted that the number of ridges 51 and the degree of slanting are adjusted so that cracks can be best generated in the eggshell according to the length, inner diameter, rotation speed, etc. of the rotating drum 10 without damaging the egg white portion. You just have to adjust. Further, the interference portion 50 is not limited to the ridge 51 as described above, and may be composed of, for example, a large number of convex portions having a curved surface. Further, if the boiled egg E can be sufficiently scraped up and the eggshell can be impacted only by the rotating drum 10, the interference portion 50 may not be provided.

<Modification example of device>
FIG. 6 is a schematic front view showing a modified example of the eggshell crack generator for boiled eggs. Here, a pop-out prevention portion 90 is provided at the upper edge portion of the collision portion 30 to prevent the boiled egg E from jumping behind the collision portion 30 during a fall. By providing the pop-out prevention unit 90, even if the boiled egg E jumps significantly while falling in the rotating drum 10, the boiled egg E is prevented from jumping behind the collision portion 30 by the pop-out prevention unit 90, and the yield is achieved. Can be prevented from decreasing. In this illustrated example, a long panel similar to the arc-shaped long panel constituting the collision portion 30 is provided so that the concave surface 91 is on the fall passage P side with the direction in which the convex surface faces is opposite to that of the collision portion 30. It is arranged in. The configuration of the pop-out prevention portion 90 is not limited to the above configuration as long as the boiled egg E can be prevented from popping out from the fall passage P behind the collision portion 30.

<Operation of device>
First, the drive motor 21 is started to rotate the rotary drum 10, and water is supplied into the rotary drum by the water supply means 40.

Next, while arranging a large number of boiled eggs E to be processed in a row on the taxiway 60, they are sequentially rolled into the internal space of the rotating drum 10.

Then, the boiled egg E is scraped up by the interfering portion 50 of the rotating rotating drum 10 and collides with the colliding portion 30, causing a crack in the eggshell. The boiled egg E that collided with the collision portion 30 collides with the inner peripheral surface of the rotating drum 10 and the interference portion 50 due to its reaction, and by repeating such movements, the cracks in the eggshell grow and the water supply Since the water supplied from the means 40 acts as a cushion against the boiled egg E in the rotating drum 10, the eggshell of the boiled egg E is not subjected to an unnecessary impact, and as a result, the egg white portion may be damaged. No.

Here, in the collision portion 30, the rear end portion 32 is displaced toward the rotation direction side of the rotating drum 10 with respect to the front end portion 31, whereby the falling passage P of the boiled egg E is directed toward the end portion 12 of the rotating drum 10. When the width is gradually narrowed according to the above, the boiled egg E tends to roll around the short axis of the egg on the start end 11 side of the rotating drum 10 in which the width of the falling passage P is wide, so that the egg is sharp. Since the end and the blunt end have more chances of colliding with the rotating drum 10 and the collision portion 30 than the body, cracks occur not only on the peripheral surface of the egg body but also on the sharp and blunt ends. Will be generated. Further, since the falling passage P gradually narrows toward the end portion 12 side of the rotating drum 10, the boiled egg E tends to roll around the long axis of the egg, and thus the entire circumference is reached by this point. The boiled egg E, in which cracks are generated over the surface and water infiltrates between the eggshell and the fetal membrane, making it easier for the eggshell to peel off, rolls around the long axis and collides with the rotating drum 10. In some cases, all the eggshells may be peeled off by 30 and so on. As a result, it is possible to reduce the amount of work in the shell peeling work, which is a post-process.

The boiled egg E in which the cracks are formed on the entire peripheral surface of the eggshell as described above falls into the receiving tray 70 from the terminal portion 12 of the rotating drum 10. At that time, since the receiving tray 70 is filled with water, the water serves as a cushion and the egg white portion of the boiled egg E is not damaged. The water of the water supply means 40 continues to flow into the receiving tray 70 from the rotating drum 10, but the water overflows from the receiving tray 70 as appropriate, and a certain amount of water is always stored in the receiving tray 70. Will be done.

The egg shell fissure generator for boiled eggs as described above can be used not only for hard-boiled eggs with a solid egg white, but also for soft-boiled eggs whose whites are much softer and more easily damaged than hard-boiled eggs. It is possible to generate cracks evenly over the entire circumference of the eggshell without damaging the part. Further, since the water supplied into the rotating drum 10 infiltrates between the eggshell and the eggshell membrane inside the eggshell when a crack is generated in the eggshell, the subsequent shell peeling work becomes extremely easy. Further, since the number of components is overwhelmingly smaller than that of the conventional device (device disclosed in Patent Document 1 and Patent Document 2), manufacturing cost can be reduced, maintenance can be facilitated, and miniaturization can be achieved. Further, since the scattered eggshell fragments only adhere to the surfaces of the rotating drum 10 and the collision portion 30, the eggshell fragments can be removed simply by spraying washing water on them, and the device is always kept clean. Can be kept.

It should be noted that the present invention can be practiced in various other forms without departing from its spirit or major features. Therefore, the above embodiments are merely exemplary in all respects and should not be construed in a limited way. The scope of the present invention is shown by the description of the scope of claims, and is not bound by the description of the text of the specification and the drawings. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

1 Boiled egg shell crack generator 10 Rotating drum 20 Rotating driving means 30 Collision part 35 Protrusion 40 Water supply means 50 Interference part 51 Protrusion E Boiled egg P Fall passage

Claims (2)

A rotating drum that rolls a boiled egg in one direction due to its own weight in the internal space and scrapes the boiled egg in a direction that intersects the falling direction.
A rotary drive means for rotating this rotary drum around its axis,
It is provided in the internal space of the rotating drum in a state of floating from the start end portion to the end portion of the rotating drum, and collides with a boiled egg scraped up by the rotating drum while falling, and the eggshell of the boiled egg. And the collision part to cause a crack in
A water supply means for supplying water into the rotating drum and
Eggshell crack generator for boiled eggs, which is characterized by being equipped with. The boiled egg shell fissure generator according to claim 1.
The rotating drum is provided with an interference portion that interferes with the boiled egg on the inner peripheral surface thereof.

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