JP2003180297A - Method and apparatus for producing boiled egg - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a boiled egg by which the formation of crack in an egg shell is reduced as possible and the boiled egg having good appearance is successively produced, and further to provide an apparatus for producing the boiled egg. <P>SOLUTION: This apparatus 1 for producing the boiled egg forms atmospheres 3 and 4 for heating an egg, having a temperature gradually increasing in the conveying direction A of a raw egg 2, and an atmosphere 5 for heating the egg, having a temperature gradually decreasing in the same direction A. The apparatus 1 also has a heating means 6 for heating the raw egg 2 in the atmospheres 3 to 5 by the irradiation with thermal energy including far infrared rays, and a conveying means 7 for conveying the raw egg 2 while rotating the raw egg 2 so as to pass through the egg-heating atmospheres 3 and 4 in the conveying direction A, and thereafter through the egg-heating atmosphere 5 in the same direction A. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for producing a boiled egg and an apparatus therefor.

[0002]

When producing hard-boiled eggs (aged eggs or soft-boiled eggs), a method of heating raw eggs in hot water or a method of irradiating with a heat ray such as far infrared rays is adopted. However, in order to obtain a nice-looking boiled egg in which the yellow egg is located in the center of the egg white without any bias, it is preferable to heat the raw egg while rotating it. In the case of continuously producing a large amount of boiled eggs, the method of rotating raw eggs in hot water while rotating is not suitable, and a method of irradiating heat rays such as far infrared rays is adopted.

By the way, when a raw egg is successively irradiated with a heat ray such as far infrared rays to produce a boiled egg, when the raw egg is rapidly heated, a thermal shock causes a crack in the egg shell, which causes a trap. Boiled eggs will be produced, and water, miscellaneous bacteria, and the like will invade from such leaves, and there is a risk that they will easily rot. Also, when egg white or the like leaks from the blade, the leaked egg white or the like adheres to the roller that rotates the raw egg, which causes contamination of the roller, which requires complicated work such as cleaning, and is also leaked. There is a possibility that egg white or the like may be propagated to new eggshells of new raw eggs via the roller one after another, and unattractive boiled eggs with egg whites or the like attached to the eggshell may be produced one after another.

The present invention has been made in view of the above points, and an object of the present invention is to continuously produce boiled eggs which can reduce the occurrence of raffins in the eggshell as much as possible. Another object of the present invention is to provide a method and an apparatus for producing boiled eggs that can be produced at any time.

[0005]

The method for producing a boiled egg according to the first aspect of the present invention has an egg heating atmosphere having a temperature gradually increasing in one direction and a temperature gradually decreasing in the same direction. A step of forming an egg heating atmosphere and, while rotating the raw egg, the raw egg is passed through the egg heating atmosphere having a temperature that gradually rises in one direction, and then the temperature is gradually lowered. And a step of transporting the eggs so that they pass in the same direction in the egg heating atmosphere, and heat the raw eggs in the egg heating atmosphere to heat the raw eggs to obtain boiled eggs. Is.

The boiled egg producing apparatus according to the first aspect of the present invention includes an egg heating atmosphere having a temperature gradually increasing in one direction and an egg heating atmosphere having a temperature gradually decreasing in the same direction. And heating means for heating the raw egg by irradiating the raw egg with heat energy in an egg heating atmosphere, and rotating the raw egg, the raw egg is gradually raised by the heating means. After passing through the egg heating atmosphere having a temperature of one direction in one direction, a conveying means for conveying so as to pass through the egg heating atmosphere having a gradually decreasing temperature formed by the heating means in the same direction. In the egg heating atmosphere, the raw egg is irradiated with heat energy from the heating means to heat the raw egg to obtain a boiled egg.

According to the method and apparatus for producing a boiled egg of the first aspect, the raw egg is passed in the one direction while rotating in an egg heating atmosphere having a temperature that gradually rises in the one direction. In addition, as a result of being able to heat the raw egg without causing a rapid temperature change with respect to the raw egg, it is possible to reduce the occurrence of a trap in the eggshell as much as possible and to prevent leakage of egg white etc. You can continuously produce good boiled eggs.

The method for producing a boiled egg according to the second aspect of the present invention comprises:
The above method for producing a boiled egg includes a step of washing the surface of the eggshell after passing through an egg heating atmosphere having a temperature that gradually decreases.

The boiled egg producing apparatus according to the second aspect of the present invention is
The above-mentioned boiled egg production apparatus further comprises an egg shell surface cleaning means for cleaning the egg shell surface after passing through an egg heating atmosphere having a gradually decreasing temperature.

The above-mentioned cleaning of the eggshell surface is performed by steam as in the third embodiment of the boiled egg production method, and the eggshell surface cleaning means is the same as in the third embodiment of the boiled egg production apparatus.
It is preferable to wash the surface of the eggshell with steam, because drying after washing can be omitted, and various bacteria can be killed to obtain hygienic boiled eggs.

The method for producing a boiled egg according to the fourth aspect of the present invention is
In the method for producing a boiled egg according to any one of the above aspects, before passing through an egg heating atmosphere having a gradually increasing temperature, a step of performing egg inspection of a raw egg for at least one of a blood egg and a roe The boiled egg producing apparatus according to the fourth aspect of the present invention is a boiled egg producing apparatus according to any one of the above, before the blood is passed through an egg heating atmosphere having a gradually increasing temperature. It further comprises an egg inspection means for performing egg inspection of a raw egg for at least one of the egg and the egg.

In the method for producing a boiled egg according to any one of the above aspects, preferably, as in the method for producing a boiled egg according to the fifth aspect of the present invention, a temperature gradually rising to a temperature range of 70 ° C to 80 ° C is used. Form a heated egg atmosphere.

In the method for producing a boiled egg according to any one of the above aspects, preferably, as in the method for producing a boiled egg according to the sixth aspect of the present invention, a temperature gradually decreasing to a temperature range of 50 ° C to 60 ° C. Form an egg heating atmosphere with.

Furthermore, in the method for producing a boiled egg according to any one of the above aspects, preferably, as in the method for producing a boiled egg according to the seventh aspect of the present invention, an amount of heat energy that increases stepwise in one direction. After irradiating the raw egg with the raw egg, the raw egg is irradiated with an amount of heat energy that gradually decreases in the same direction.

According to the method for producing a boiled egg of the seventh aspect, a method of passing a raw egg in one direction while rotating the egg in an egg heating atmosphere having a temperature gradually increasing in one direction is combined. As a result, the raw egg can be heated without causing a rapid temperature change with respect to the raw egg, and as a result, the occurrence of flakes in the eggshell can be reduced as much as possible, and leakage of egg white etc. can be eliminated. Therefore, it is possible to continuously produce nice-looking boiled eggs.

The heat energy applied to the raw egg in the egg heating atmosphere preferably contains far infrared energy as in the method for producing a boiled egg according to the eighth aspect of the present invention.

The heating means in the present invention preferably forms an egg heating atmosphere having a temperature gradually increasing to a temperature range of 70 ° C. to 80 ° C., as in the boiled egg producing apparatus of the fifth aspect of the present invention. And preferably like the boiled egg maker according to the sixth aspect of the present invention.
An egg heating atmosphere having a temperature gradually falling to a temperature range of 0 ° C. to 60 ° C. is formed.

Further, the heating means in the present invention preferably irradiates the raw egg with a stepwise increasing amount of heat energy in one direction, as in the boiled egg producing apparatus of the seventh aspect of the present invention, In the same direction, the raw egg is irradiated with a heat energy of which amount is gradually reduced.

According to the boiled egg producing apparatus of the seventh aspect of the present invention, as in the boiled egg producing method of the seventh aspect, in an egg heating atmosphere having a temperature gradually rising in one direction, In combination with the method of passing the raw egg in one direction while rotating it, the raw egg can be heated without causing a sudden temperature change with respect to the raw egg. Since it can be minimized and leakage of egg white and the like can be eliminated, it is possible to continuously produce boiled eggs with good appearance.

Further, the heating means in the present invention is adapted to irradiate the raw egg with thermal energy including far infrared energy in the egg heating atmosphere like the boiled egg producing apparatus of the eighth aspect of the present invention. However, and like the boiled egg manufacturing apparatus of the ninth aspect of the present invention, it is provided with at least first and second chambers arranged in a row in one direction, and the first chamber has one chamber. The egg heating atmosphere having a temperature gradually increasing in the direction is formed, and the egg heating atmosphere having a temperature gradually decreasing in the one direction is formed in the second chamber. Good.

In the boiled egg producing apparatus of the ninth aspect, the heating means has a third chamber interposed between the first and second chambers as in the boiled egg producing apparatus of the tenth aspect of the present invention. Further, the first to third chambers are arranged adjacent to each other in a row in the one direction, and the heating means has a temperature gradually increasing in the one direction in the third chamber. It is advisable to form an egg heating atmosphere having

In the boiled egg producing apparatus according to the ninth or tenth aspect, the heating means preferably heats the air in each chamber as well as the boiled egg producing apparatus according to the eleventh aspect of the present invention. A heating mechanism for irradiating the raw egg passing through the chamber with heat energy to heat the raw egg, and an air discharging mechanism for discharging the heated air in each chamber are provided.

The heating mechanism in the boiled egg maker according to the eleventh aspect is provided with a plurality of long far-infrared heaters like the boiled egg maker according to the twelfth aspect of the present invention,
Here, it is preferable that the far-infrared heaters are arranged such that their long axes are parallel to one direction and are arranged adjacent to each other in the lateral direction.

Further, the heating means in the present invention preferably further comprises a moving mechanism for moving the air in each chamber like the boiled egg producing apparatus of the thirteenth aspect.
The moving mechanism may be a stirring mechanism that stirs air in each chamber, or instead of or together with this, a circulation mechanism that circulates air in each chamber.

The conveying means in the present invention is preferably arranged to convey a plurality of raw eggs in parallel, as in the boiled egg producing apparatus of the fourteenth aspect.

The boiled egg producing apparatus of the present invention preferably further comprises a washing means for washing the conveying means, like the boiled egg producing apparatus of the fifteenth aspect thereof, for washing the conveying means. By providing the washing means, boiled eggs can be produced sanitarily and continuously.

In any of the above-described boiled egg production method and apparatus, the aged egg may be produced as a boiled egg, or alternatively, the soft-boiled egg may be produced as a boiled egg. . The selection of the production of the aged egg or the soft-boiled egg can be performed by appropriately controlling the irradiation amount of the heat energy to the raw egg, the feeding speed of the raw egg, and the like.

Next, the embodiment of the present invention will be described in more detail based on the preferred examples shown in the drawings. The present invention is not limited to these examples.

[0029]

1 to 4, a boiled egg producing apparatus 1 of the present embodiment has a conveyance direction A of a raw egg 2 which is one direction.
In the same direction A and the egg heating atmosphere 5 having the temperature gradually decreasing in the same direction A are formed, and the egg heating atmospheres 3 to 5 become raw eggs 2. The heating means 6 that heats the raw egg 2 by irradiating it with heat energy including far-infrared rays, and the raw egg 2 having a gradually increasing temperature formed by the heating means 6 while rotating the raw egg 2. After passing through the egg heating atmospheres 3 and 4 in the transport direction A, which is one direction, the egg heating atmosphere 5 formed by the heating means 6 and having a gradually decreasing temperature is passed in the same direction A. Such as the transport means 7 and the egg heating atmospheres 3 and 4 having a gradually increasing temperature, before performing the egg test of the raw egg 2 for at least one of the blood egg and the egg. Means 8 and
After passing through the egg heating atmosphere 5 having a gradually decreasing temperature, an egg shell surface cleaning means 10 for cleaning the egg shell surface 9 of the boiled egg 13 and a cleaning means 11 for cleaning the transport means 7.
And a frame 12 for irradiating the raw egg 2 with heat energy from the heating means 6 in the egg heating atmospheres 3 to 5 to heat the raw egg 2 to obtain a boiled egg 13. There is.

The heating means 6 comprises an upper plate 21 of the frame 12,
It is defined by the covers 22 and 23 and the partitions 24 and 25 provided on the upper plate 21 and is in the transport direction A.
The chambers 26 and 27 arranged in a row at the upper plate 2
1. Cover 28 and partition wall 24 provided on the upper plate 21
And chambers 26 and 27 defined by
And a chamber 29 interposed between the eggs and the chambers 26, 27, and 29 arranged adjacent to each other in a row in the transport direction A to form the respective egg heating atmospheres 3 to 5 by heating the air. In order to heat the raw egg 2 by irradiating the raw egg 2 with heat energy including far-infrared energy in each of the heating atmospheres 3 to 5, the egg heating atmospheres 3 to 5 in the chambers 26, 27 and 29 are respectively set. Heating mechanisms 31, 32 and 33 for irradiating the passing raw egg 2 with heat energy including far infrared energy, and air discharge mechanisms 34, 35 and 36 for discharging the heated air of the chambers 26, 27 and 29, respectively. Chamber 26, 2
7 and 29 are provided with agitation mechanisms 37, 38 and 39 for agitating the air in the chambers 26, 27 and 29, respectively.

Each of the heating mechanisms 31, 32 and 33 has a plurality of long lengths. In this example, each of the heating mechanisms 31, 32 and 33 has 24 far infrared heaters 41 to 46. 41 to 46 are arranged such that their long axes are parallel to the transport direction A, and are arranged laterally adjacent to each other in the far-infrared heaters 41 to 46.
And 23, respectively.

The twelve far-infrared heaters 41 of the heating mechanism 31, which are arranged in the uppermost stream in the transport direction A and laterally adjacent to each other in the chamber 26, are operated at a voltage of 180 V, for example. The twelve far-infrared heaters 42 of the heating mechanism 31, which are arranged downstream of the far-infrared heater 41 in the transport direction A and laterally adjacent to each other in the chamber 26, have a voltage of, for example, 200V. It is designed to be bolt operated.

Far-infrared heater 42 in the conveying direction A
The 12 far-infrared heaters 43 of the heating mechanism 32, which are arranged in the chamber 29 laterally adjacent to each other in the downstream direction, are operated at a voltage of 220 V, for example, The 12 far-infrared heaters 44 of the heating mechanism 32, which are arranged downstream of the far-infrared heater 43 in A and laterally adjacent to each other in the chamber 29, are operated at a voltage of 220 volts, for example. Has become.

Far-infrared heater 44 in the transport direction A
The 12 far-infrared heaters 45 of the heating mechanism 33, which are arranged downstream of each other and laterally adjacent to each other in the chamber 27, are operated at a voltage of 180 V, for example, The 12 far-infrared heaters 46 of the heating mechanism 33, which are arranged downstream of the far-infrared heater 44 in A and are laterally adjacent to each other in the chamber 27, are operated at a voltage of 180 volts, for example. Has become.

With such heating mechanisms 31, 32 and 33, the heating means 6 irradiates the raw egg 2 with a stepwise increasing amount of heat energy in the carrying direction A, and then gradually decreases in the same direction. The raw egg 2 is irradiated with the heat energy of.

The far-infrared heaters 41 to 46 are arranged so that the raw eggs 2 conveyed can be efficiently irradiated with heat energy.
It is preferable to provide a reflector on each of the.

The cover 22 has an upper plate 21 on the lower part of its front wall.
Communication hole 5 for communicating with the outside and the chamber 26 in cooperation with
1 has a notch 52 to form 1 and the partition wall 24 is
It has a notch 54 in its lower part to cooperate with the upper plate 21 to form a communication hole 53 for communicating the chamber 26 and the chamber 29 with each other, and the partition wall 25 cooperates with the upper plate 21 in its lower part. The cover 23 has a notch 56 to form a communication hole 55 for communicating the chamber 29 and the chamber 27 with each other. There is a notch 58 for forming a communication hole 57 for communicating with each other.

The air discharge mechanism 34 is provided on the upstream side of the ceiling portion of the cover 22 in the transport direction A and has an exhaust blower 61 for sucking the air in the chamber 26 and discharging it to the outside. , By operation, in chamber 26,
An air flow 62 from the communication hole 51 to the exhaust blower 61 and an air flow 63 from the communication hole 53 to the exhaust blower 61 are formed.

The air discharge mechanism 35 is provided on the upstream side of the ceiling portion of the cover 28 in the carrying direction A and has an exhaust blower 65 for sucking the air in the chamber 29 and discharging it to the outside. , In the chamber 29 by the operation,
An air flow 66 from the communication hole 53 to the exhaust blower 65 and an air flow 67 from the communication hole 55 to the exhaust blower 65 are formed.

The air discharge mechanism 36 is provided on the downstream side of the ceiling portion of the cover 23 in the carrying direction A and has an exhaust blower 69 for sucking the air in the chamber 27 and discharging it to the outside. , In the chamber 27 by the operation,
An air flow 70 from the communication hole 55 to the exhaust blower 69 and an air flow 71 from the communication hole 57 to the exhaust blower 69 are formed.

Each of the stirring mechanisms 37, 38 and 39 is equipped with fans 75, 76 and 77 provided on the ceilings of the covers 22, 28 and 23, respectively, and the chambers 26, 27.
And 29, respectively, by agitating the air in chambers 26, 27 and 2 respectively.
Extremely high temperature air or extremely low temperature air is prevented from accumulating in a part of 9 so that the heating energy of the heating mechanisms 31, 32 and 33 can be efficiently used.

The heating means 6 comprises heating mechanisms 31, 32 and 3
3, air discharge mechanism 34, 35 and 36 and stirring mechanism 3
With the operations of 7, 38 and 39, the chamber 26 forms the egg heating atmosphere 3 having a temperature that gradually rises in the conveying direction A to a temperature range of 60 ° C. to 70 ° C. , 50 ° C to 6 in transport direction A
The egg heating atmosphere 5 having a temperature that gradually decreases to a temperature range of 0 ° C. is formed, and in the chamber 29, a temperature that gradually increases to a temperature range of 70 ° C. to 80 ° C. in the transport direction A is set. The atmosphere 4 for heating eggs is created.

The heating means 6 includes the chambers 26, 29 and 2
7 controls the amount of air discharged from the air discharge mechanisms 34, 35 and 36 and the amount of thermal energy radiated from the heating mechanisms 31, 32 and 33 based on the detected temperatures from the plurality of temperature sensors provided in FIG. Thus, the egg heating atmospheres 3 to 5 may be always at the above temperature.

The conveying means 7 has a plurality of sprocket wheels 81 rotatably supported by the frame 12, and two pairs of endless members which are hung around the sprocket wheels 81 and pass through the communication holes 51, 53, 55 and 57. Chains 82 and 83, a sprocket wheel 84 that applies tension to the chains 82 and 83, and a plurality of chains that are arranged between the chains 82 and 83 of each pair and are rotatably supported by the chains 82 and 83 of each pair. Long roller 85
And both ends of each roller 85 make rolling contact with each other.
The frame 12 extends in the transport direction A so as to rotate 5
Two pairs of rails 86 and 87 fixed to the upper plate 21
And a traveling means 88 for traveling the chains 82 and 83 in the transport direction A.

Each roller 85 has six recesses 91 for receiving the raw egg 2 with its major axis lying sideways. The raw egg 2 received in each recess 91 is centered on its major axis. As it rotates itself, it rotates in the opposite direction.

The traveling means 88 includes an electric motor 95, a pulley 96 fixed to the output rotation shaft of the electric motor 95, a pulley 97 fixed to the rotation shaft of the sprocket wheel 81 on the most downstream side in the conveying direction A, and a pulley. And an endless belt 98 wound around 96 and 97, and the electric motor 95 is operated to rotate the sprocket wheel 81 at the most downstream side in the transport direction A via the pulley 96, the endless belt 98, and the pulley 97. Two pairs of endless chains 82 and 83
Is designed to run.

The conveying means 7 travels through the two pairs of endless chains 82 and 83, and through the rollers 85, the rollers 8 respectively.
The raw egg 2 placed on the carrier 5 is transported in the transport direction A. In this example, the transporting means 7 transports 12 rows of raw eggs 2 in parallel.

The egg-testing means 8 is disposed on the most upstream end side in the transport direction A and illuminates the raw egg 2 placed on the roller 85 with light from below, and a raw egg to be inspected. It is equipped with a blackout curtain (not shown) that covers the periphery of the egg 2 to darken the periphery and facilitates the inspection, and when blood eggs and dams are visually detected, they are manually removed from the roller 85. It is supposed to be done.

The raw egg 2 for obtaining the boiled egg 13 is initially
In order to be exposed to the inspection by the egg inspection means 8, the roller 85 is manually placed on the uppermost stream end side in the transport direction A one after another.

The egg shell surface cleaning means 10 comprises a nozzle 101 for cleaning the egg shell surface 9 of the boiled egg 13 which has been sent from the chamber 27 into the boiled egg 13 from the raw egg 2, and the cleaning area 1.
02, and a cover 103 that defines 02.

Eggshell surface 9 by the eggshell surface cleaning means 10.
The boiled egg 13 that has been washed is manually taken out at the most downstream end in the transport direction A.

The cleaning means 11 is composed of the rollers 8 coming one after another.
A brush 111 that contacts the surface of the roller 5 while rotating and cleans the roller 85, a nozzle 112 that sprays steam onto the roller 85 that is cleaned, and a cover 114 that defines a cleaning area 113 are provided.

Roller 85 cleaned by cleaning means 11
Are successively brought to the most upstream end in the transport direction A by the transport means 7.

The above-described boiled egg producing apparatus 1 has egg heating atmospheres 3 and 4 having a temperature gradually rising to a temperature range of 70 ° C. to 80 ° C. in the conveying direction A and 50 ° C. to 60 ° C. in the same direction A. An egg heating atmosphere 5 having a temperature gradually decreasing to a temperature range is formed, and the raw egg 2 is rotated in the egg heating atmospheres 3 and 4 having a temperature gradually increasing while rotating the raw egg 2. After passing in the transport direction A,
The egg heating atmospheres 3 to 5 are conveyed so as to pass in the same direction A as the egg heating atmosphere 5 having a gradually decreasing temperature.
The raw egg 2 is irradiated with heat energy therein to heat the raw egg 2 to obtain a boiled egg 13, and the raw egg 2 is passed through an egg heating atmosphere 5 having a temperature that gradually decreases. After that, the eggshell surface 9 of the boiled egg 13 is washed with steam, and before passing through the egg heating atmosphere 3 having a gradually increasing temperature, the raw egg 2 is inspected for at least one of the blood egg and the roe. Eggs, and egg heating atmosphere 3 to 5
In the inside, after irradiating the raw egg 2 with the heat energy of which the amount increases stepwise in the conveying direction A, the raw egg 2 is irradiated with the heat energy containing the amount of far infrared energy which gradually decreases in the same direction A. It is supposed to do.

In the boiled egg producing apparatus 1, the egg heating atmosphere 3 having a temperature that gradually rises in the carrying direction A is used.
Since the raw egg 2 is passed through in the conveying direction A while being rotated, the raw egg 2 can be heated without causing a rapid temperature change with respect to the raw egg 2, and as a result, a trap can be generated in the egg shell. Since it is possible to reduce the amount of the egg white and the leakage of egg white and the like can be eliminated, it is possible to continuously produce the boiled egg 13 having a good appearance.

In addition, in the boiled egg producing apparatus 1, since the egg shell surface 9 is washed with steam, drying after washing can be omitted, and various germs can be killed. Can be obtained.

Further, in the boiled egg producing apparatus 1, after irradiating the raw egg 2 with a stepwise increasing amount of heat energy in the carrying direction A, the raw egg 2 with a stepwise decreasing amount of heat energy in the same direction A. Therefore, in combination with passing the raw egg 2 in the transport direction A while rotating the raw egg 2 in the egg heating atmosphere 3 having a temperature that gradually rises in the transport direction A, As a result of being able to heat the raw egg 2 without causing a sudden temperature change with respect to the raw egg 2, it is possible to more surely reduce the occurrence of a trap in the eggshell and to prevent leakage of egg white and the like. Therefore, it is possible to continuously produce a nice-looking boiled egg 13.

Furthermore, since the boiled egg producing apparatus 1 is equipped with the cleaning means 11 for cleaning the conveying means 7, the boiled egg 1
3 can be produced sanitarily and continuously, and since the roller 85 is washed with steam, various bacteria can be killed and a more hygienic boiled egg 13 can be produced. it can.

[0059]

According to the present invention, it is possible to provide a boiled egg production method and an apparatus capable of producing boiled eggs with a good appearance, which can minimize the occurrence of flakes in the eggshell as much as possible. it can.

[Brief description of drawings]

FIG. 1 is a front view of a preferred example of an embodiment of the present invention.

FIG. 2 is a cross sectional view taken along the line II-II shown in FIG.

FIG. 3 is an operation explanatory diagram of the example shown in FIG. 1.

FIG. 4 is a detailed explanatory diagram of a heating unit of the example shown in FIG.

[Explanation of symbols]

1 Boiled egg production equipment 2 raw eggs 3, 4, 5 egg heating atmosphere 6 heating means 7 Transport means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hisahiro Kinoshita             6 shares, 1 Hachinotsubo, Shoryuji Temple, Nagaokakyo City, Kyoto Prefecture             Inside the company Navel (72) Inventor Toshio Hayashi             377-1 Tadomizucho, Fushimi-ku, Kyoto-shi, Kyoto Prefecture             Target Engineering Co., Ltd. (72) Inventor Yoshinori Kawashima             377-1 Tadomizucho, Fushimi-ku, Kyoto-shi, Kyoto Prefecture             Target Engineering Co., Ltd. F-term (reference) 4B042 AC10 AD29 AE03 AG07 AH09                       AP02 AP11 AP30 AT05                 4B055 AA28 BA36 BA57 CA71 CC37                       DA02 DB07 EA08

Claims (23)

[Claims] 1. An egg heating atmosphere having a temperature gradually increasing in one direction and an egg heating atmosphere having a temperature gradually decreasing in the same direction are formed, and the egg is rotated while rotating the egg. Is passed in one direction through an egg heating atmosphere having a gradually increasing temperature, and then conveyed so as to pass in the same direction through an egg heating atmosphere having a gradually decreasing temperature, thereby heating the egg. A method for producing a boiled egg by irradiating a raw egg with heat energy in an atmosphere to heat the raw egg to obtain a boiled egg. 2. The method for producing a boiled egg according to claim 1, wherein the egg shell surface is washed after passing through an egg heating atmosphere having a gradually decreasing temperature. 3. The method for producing a boiled egg according to claim 2, wherein the surface of the eggshell is washed with steam. 4. The egg inspection of a raw egg for at least one of a blood egg and a roe before passing through an egg heating atmosphere having a gradually increasing temperature. The method for producing boiled eggs according to item 1. 5. The method for producing a boiled egg according to claim 1, wherein an egg heating atmosphere having a temperature gradually rising to a temperature range of 70 ° C. to 80 ° C. is formed. 6. The method for producing a boiled egg according to claim 1, wherein an egg heating atmosphere having a temperature gradually falling to a temperature range of 50 ° C. to 60 ° C. is formed. 7. The raw egg is irradiated with a stepwise increasing amount of heat energy in one direction and then is irradiated with a stepwise decreasing amount of heat energy in the same direction.
7. The method for producing a boiled egg according to any one of 1 to 6. 8. The method according to claim 1, wherein the raw egg is irradiated with heat energy including far infrared energy in an egg heating atmosphere.
The method for producing a boiled egg according to any one of 1. 9. An egg heating atmosphere having a temperature gradually increasing in one direction and an egg heating atmosphere having a temperature gradually decreasing in the same direction are formed, and raw eggs are heated in the egg heating atmosphere. A heating means for irradiating energy to heat the raw egg, and the raw egg while rotating the raw egg, in one direction in an egg heating atmosphere having a gradually increasing temperature formed by the heating means. After passing, it is provided with a conveying means for conveying so as to pass in the same direction in an egg heating atmosphere having a gradually lowering temperature formed by the heating means, and the raw eggs are heated in the egg heating atmosphere. A boiled egg manufacturing apparatus which heats the raw egg by irradiating it with heat energy from a heating means to obtain a boiled egg. 10. The boiled egg manufacturing apparatus according to claim 9, further comprising an egg shell surface cleaning means for cleaning the egg shell surface after passing through an egg heating atmosphere having a gradually decreasing temperature. 11. The boiled egg manufacturing apparatus according to claim 10, wherein the eggshell surface cleaning means is adapted to clean the eggshell surface with steam. 12. An egg inspection means for performing egg inspection of a raw egg for at least one of a blood egg and a roe before passing through an egg heating atmosphere having a gradually increasing temperature. Item 12. The boiled egg manufacturing apparatus according to any one of items 9 to 11. 13. The heating means is adapted to form an egg heating atmosphere having a temperature that gradually rises to a temperature range of 70 ° C. to 80 ° C. Boiled egg production equipment. 14. The heating means is adapted to form an egg heating atmosphere having a temperature that gradually decreases to a temperature range of 50 ° C. to 60 ° C. Boiled egg production equipment. 15. The heating means irradiates the raw egg with a stepwise increasing amount of heat energy in one direction, and thereafter irradiates the raw egg with a stepwise decreasing amount of heat energy in the same direction. The boiled egg manufacturing apparatus according to any one of claims 9 to 14. 16. The boiled egg producing apparatus according to claim 9, wherein the heating means irradiates the raw egg with heat energy including far infrared energy in an egg heating atmosphere. . 17. The heating means comprises at least first and second chambers arranged in a line in one direction,
In the first chamber, an egg heating atmosphere having a temperature gradually increasing in one direction is formed, and in the second chamber, an egg heating atmosphere having a temperature gradually decreasing in one direction is formed. Claim 9 to 1 adapted to form
The boiled egg manufacturing apparatus according to any one of 6 above. 18. The heating means further comprises a third chamber interposed between the first and second chambers, and the first to third chambers are arranged adjacent to each other in a row in one direction. The boiled egg manufacturing apparatus according to claim 17, wherein the heating means forms an egg heating atmosphere having a temperature that gradually increases in one direction in the third chamber. 19. The heating means heats the air in each chamber and irradiates the raw eggs passing through each chamber with heat energy to heat the raw eggs, and the air for discharging the heated air in each chamber. The boiled egg manufacturing apparatus according to claim 17 or 18, further comprising a discharging mechanism. 20. The heating mechanism comprises a plurality of long far-infrared heaters, and the far-infrared heaters are arranged such that their long axes are parallel to one direction and are lateral to each other. The boiled egg manufacturing apparatus according to claim 19, wherein the boiled egg manufacturing apparatuses are arranged adjacent to each other. 21. The boiled egg manufacturing apparatus according to claim 18, wherein the heating means further comprises a moving mechanism for moving the air in each chamber. 22. The boiled egg production apparatus according to claim 9, wherein the conveying means conveys a plurality of raw eggs in parallel. 23. The boiled egg manufacturing apparatus according to claim 9, further comprising a cleaning means for cleaning the conveying means.