JP3261968B2 - Can pressure measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the internal pressure of a can, which can continuously measure a change in pressure inside the can.

[0002]

2. Description of the Related Art Conventionally, in a process for producing a sealed can of beer, a can filled with beer having a liquid temperature of 3 to 5 ° C. and sealed is heated and sterilized using a device called a pastizer. Have been to be. Also, for canned beverages with a low pH and no need for sterilization, such as canned beverages with sealed carbonated beverages, dew condensation occurs on the surface of the can, making it impossible to print on the surface of the can in a later process, or packaging. In order not to wet the corrugated cardboard for use, it is heated using a device called a warmer to raise the temperature of the can to room temperature or higher.

[0003] In recent years, aluminum is often used as a material for cans in which beverages are sealed, but the thickness of aluminum cans has been reduced from the viewpoint of resource saving. Accordingly, it is necessary to continuously measure how the pressure inside the aluminum can changes when the aluminum can is heated by the above-described apparatus such as a past riser or a warmer. For example, Japanese Patent Application Laid-Open
Japanese Patent Publication No. 180720 proposes a can internal pressure measuring device suitable for use in measuring changes in internal pressure of an aluminum can.

[0004] This can internal pressure measuring device will be briefly described with reference to Fig. 8. In Fig. 8, reference numeral 1 indicates a can internal pressure measuring device.
A cylindrical blind plug 5 made of an elastic material is fitted in a through hole 4 formed through the lid 3 attached to the sample can 2. A pressure measuring device 6 is provided on the outer surface of the sample can 2.
Is fixed by a rubber band 7, and the internal pressure of the sample can 2 is measured by the pressure measuring device 6 through a thin rubber tube 8 having a thin hollow needle 9 pierced through the blind plug 5.
Has been introduced to.

[0005] The apparatus 1 for measuring the internal pressure of a can constructed as described above.
Are put together on a conveyor at a ratio of one to 1,000 to 10,000 cans to be manufactured, conveyed, and subjected to a heat sterilization treatment. Then, by reading out the pressure data in the sample can 2 measured and stored by the pressure measuring device 6 after the completion of the heating process, it is determined whether or not the specification of the can is properly selected. I have. For example, if the can strength specification is too high for the can pressure,
The thickness of the can can be further reduced, and the cost can be reduced.

[0006] By the way, in canning for sealing low-acid beverages such as coffee, for example, the can is sealed in a high-temperature and high-pressure oven, pressurized and heated, and sterilized by maintaining the high-temperature and high-pressure state for a long time. Have been. Therefore,
In order to continuously measure the change in the pressure inside the can that is sterilized inside the high-temperature and high-pressure oven, the can-internal-pressure measuring device itself must be located inside the high-temperature and high-pressure oven.

[0007]

However, since the conventional can pressure measuring device does not have heat resistance or pressure resistance, it can measure the internal pressure of the can that is sterilized inside the high-temperature high-pressure pot. In addition, even if the internal pressure of the can can be measured, since the surroundings of the can are at a high temperature and high pressure, only the relative internal pressure can be obtained. The internal pressure could not be measured. In particular, when the pressure in the kettle is not constant and changes, or when the change in the pressure in the kettle is not synchronized with the change in the pressure in the can, the correlation between the two is difficult to obtain and the accurate Could not be measured.

[0008] The present invention has been made in view of the above-mentioned circumstances, and cordless, accurate and continuous measurement of changes in can pressure of cans requiring sterilization for a long time even in a high-temperature high-pressure kettle. It is an object of the present invention to provide a can internal pressure measuring device that can perform the measurement.

[0009]

The present invention has the following features to attain the object mentioned above. That is, in the internal pressure measuring device according to claim 1, the internal pressure measuring device for continuously measuring the pressure change inside the can sealed in the kettle, wherein the pressure change inside the can is measured over time. Pressure measurement unit, a pressure measurement unit for measuring the pressure change in the pot over time, and a storage for storing data measured by the pressure measurement unit and the pressure measurement unit in the pot. Department and
A control unit that controls the operation of the in-can pressure measuring unit, the pot internal pressure measuring unit and the storage unit, a power supply unit that supplies power to the respective units, the in-can pressure measuring unit, and the pot internal pressure measuring unit , the storage unit, and the heat-resistant pressure vessel the control unit and the power supply unit stores respectively, and the pressure introducing means for introducing the pressure inside the canned the can internal pressure measuring portion, the heat resistant
Pressure vessel and fixing means for integrally fixing the can.
The fixing means removes the heat-resistant pressure-resistant container and the can.
A technique including a cushioning member that protects from contact with another can is employed.

This apparatus for measuring the internal pressure of a can includes a pressure measuring section for measuring the pressure in the can and a pressure in the kettle, respectively. , The pressure in the can and the pressure in the pot are measured simultaneously. Therefore, by calculating the pressure difference between the can pressure and the can pressure, an accurate can pressure can be obtained in consideration of the effect of the can pressure. Also, the components required for continuous measurement of pressure changes, consisting of the pressure measurement unit in the can, the pressure measurement unit in the pot, the storage unit, the control unit and the power supply unit, are stored in a heat-resistant and pressure-resistant container to protect Therefore, the pressure inside the can and the inside of the kettle can be accurately and continuously obtained even in the state of being placed inside the high-temperature and high-pressure kettle. Also, with this can pressure measurement device
Put the heat-resistant pressure-resistant container and the canned together and
By providing a fixing means for fixing, the canned and
The distance between the heat-resistant container and the pressure-resistant container can be kept constant.
Load is applied to the pressure introducing means connecting between the two.
Prevent from getting lost. Further, the fixing means is provided with
By providing an opposing member, it can be
Together with the can pressure measuring device of the present invention
Vibration due to contact with these other cans is also suppressed.
To obtain accurate measurement data, and
It is hard to damage the view.

According to a second aspect of the present invention, there is provided the can internal pressure measuring apparatus according to the first aspect, further comprising a temperature measuring section to which a sensor for measuring the temperature inside the can is connected, and the storage section further comprising: A technique is employed in which data measured by the temperature measurement unit is stored, and the control unit also controls the temperature measurement unit.

Since the can pressure measuring device has a temperature measuring section to which a sensor for measuring the temperature in the can is connected, the pressure and the temperature in the can are simultaneously measured, and the correlation between the pressure and the temperature over time is measured. The relationship is obtained exactly.

According to a third aspect of the present invention, in the can internal pressure measuring apparatus according to the first or second aspect, the control section measures and stores the pressure at predetermined time intervals. A technique for controlling the in-can pressure measuring section, the pot internal pressure measuring section, and the storage section is employed.

In this can internal pressure measuring device, the control unit comprises:
By controlling the pressure measurement unit in the can, the pressure measurement unit in the kettle, and the storage unit so as to measure the pressure and the temperature at a set time interval, an appropriate A number of measurement data are continuously collected.

[0015]

[0016]

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a can internal pressure measuring apparatus according to the present invention will be described below with reference to FIGS. In these figures, reference numeral 11 denotes a can internal pressure measuring device,
12 is a can internal pressure measuring unit, 13 is a heat and pressure resistant container, 14
A and 14B are pressure introducing means, and 15 is a storage box.

FIG. 1 shows a can pressure measuring device 11 according to this embodiment.
As shown in FIG. 2 and FIG. 2, a heat-resistant and pressure-resistant container 13 containing a not-shown can internal pressure measuring unit 12 therein, and the internal pressure of the first sample can A are measured by the can internal pressure measuring unit 12.
Pressure-introducing means 14A for introducing the heat-resistant and pressure-resistant container 1
3 and a storage box 15 as fixing means for mounting and fixing the first sample can A together.

The heat-resistant and pressure-resistant container 13 is a box-shaped container made of a metal that does not easily rust, for example, stainless steel or an aluminum alloy, and has rectangular plate-shaped flanges 13a fixed to both ends thereof. It is supported in box 15. The heat-resistant and pressure-resistant container 13 can be used in a temperature range of 0 ° C. to 150 ° C., and at a pressure of 3 atm or less in external pressure, the equipment housed therein is completely waterproof. Therefore, the can internal pressure measuring unit 12 housed therein is protected.

As shown in FIGS. 3 and 4, the can pressure measuring unit 12 is connected to an external selector 20 and a computer 21 via a connection cable 21a to read out the measurement data. And a start unit 22 for starting the can internal pressure measurement unit 12 at the time of measurement.
a is inserted and fixed in a through-hole (not shown) provided in a. In addition, a charging terminal for charging a power supply can be inserted into the through hole.

As shown in FIG. 5, the can internal pressure measuring unit 12 includes an internal can pressure measuring section 23 for measuring a change in the pressure inside the first sample can A with time, and a change in the pressure in the kettle. A pressure measuring section 24 for measuring the temperature over time, a temperature measuring section 25 for measuring the temperature inside the second sample can B over time by a sensor 25a, and a storage section 26 for storing the measured data. A control unit 27 for controlling the operations of the in-can pressure measuring unit 23, the kettle-internal pressure measuring unit 24 and the storage unit 26, and a power supply unit 28 for supplying electric power to the respective units.

The in-can pressure measuring section 23 measures the pressure in the first sample can A introduced by the pressure introducing means 14A using a strain gauge, and measures the temperature in the heat-resistant pressure-resistant container 13. A correction unit 29 is provided for correcting an error in pressure measurement based on data obtained from the temperature sensor 29a in the pot.

The inside pressure measuring section 24 is provided with a flange 13
a, which has an introduction portion 24a protruding outward in a penetrating state, and measures the pressure in the kettle introduced from the introduction portion 24a using a strain gauge. For example, in the case of a warmer or the like, the pressure in the kettle is such that the pressure in the can is not significantly affected. Therefore, as shown in FIG. , The third sample can C
A pressure introducing means 14B for introducing the internal pressure of the above into the can internal pressure measuring unit 12 is attached. That is, the pressure in the two cans of the first sample can A and the third sample can C can be measured by the in-can pressure measuring unit 23 and the in-can pressure measuring unit 24, respectively, and the reliability of the measurement is improved. Can be improved.

The in-can temperature measuring section 25 includes a flange 13
has a temperature sensor 25b in a can such as a thermocouple connected to the connection portion 25a in a state penetrating through a, and stores the temperature in the second sample can B measured by the temperature sensor 25b in the can as an electric signal. This is transmitted to the unit 26.

The storage unit 26 stores 10 per measurement.
It has a capacity to store five times the measurement data of the internal pressure of the can, the internal pressure of the kettle, and the internal temperature of the heat-resistant and pressure-resistant container composed of 00 data. The control unit 27 includes a can pressure measuring unit 23,
It controls the pressure measurement unit 24 in the kettle, the temperature measurement unit 25 in the can, and the storage unit 26, and controls the pressure in the first sample can A,
The time interval for measuring the pressure in the kettle (or the pressure in the third sample can C) and the temperature in the second sample can B can be set to any interval.

The delay time from the start of the operation of the can internal pressure measuring unit 12 to the start of the measurement can be adjusted by the control unit 27. And
The stored measurement data is read out based on a control signal of the external computer 21 and sent to the computer 21. The power supply unit 28 has a built-in battery that can be charged by external power, and enables continuous measurement for up to four hours.

The pressure introducing means 14A, 14B comprises a first
A heat-resistant and pressure-resistant packing 31 made of silicon rubber fitted in a through hole formed in the bottom of each of the sample cans A and C, and one end of the packing 31 is pierced. A first thin stainless steel pipe 32 made of stainless steel, and a second thin stainless steel pipe connected to the pipe 32 via a connector 33 and connected to the introduction portion 23a of the in-can pressure measuring section 23. A pipe 34 is provided.

The internal volume of the portion between the first sample can A and the pipe connection portion 12 of the heat-resistant and pressure-resistant container 13 is minimized, which hinders the measurement of the pressure in the first sample can A. Are not to come. In addition, the first
Silicon seal material is applied to the inner and outer surfaces of the packing 31 attached to the bottom of the sample can A so that no pressure loss occurs from the fitting portion between the first sample can A and the packing 31. It has been like that.

Further, at the bottom of the second sample can B,
One end of the in-can temperature sensor 25b is pierced through the same heat-resistant and pressure-resistant packing 31 fitted in the penetrating through hole.

In the present embodiment, the storage box 15 is a box having a substantially rectangular bottom surface 35 whose upper part is open, on which the heat-resistant and pressure-resistant container 13 is placed. The first sample can A, the second sample can
The sample cans B and, if necessary, the third sample cans C are placed and fixed on the bottom surface 35, respectively.

The can support jig 36 is provided with substantially semicircular notches 36a, 36b and 36c which are fitted to the can bodies of the first, second and third sample cans A, B and C. In addition, the first, second, and third sample cans A, B, and C can be easily attached and detached as well as securely held so as not to be inclined.

In this embodiment, the storage box 15
A buffer member 37 composed of a band plate disposed so as to surround the upper outer periphery of the can inner pressure measuring device 11 is fixed to a frame 38 suspended from the bottom surface 35.
Another can put into the sterilizing apparatus together with the container is prevented from falling into the inside of the storage box 15 and damaging the pressure introducing means 14A and the like.

The height of the storage box 15 is appropriately changed by using a frame having a length corresponding to the size of the sample can to be measured. For example, as shown in FIG.
Is a length corresponding to a sample can for 350 ml, and a frame 38c is corresponding to a sample can for 500 ml. Also, two rods 40 are erected on the bottom surface 35, and a support 41 is fixed to each of the rods 40. These supports 41 are provided with pressure introducing means 41A, 4A, respectively.
By gripping the 1B connector 33, the influence of vibration applied to the pressure introducing means 41A, 41B during transportation or the like is reduced.

Next, a procedure for measuring the pressure inside the first sample can A using the can internal pressure measuring device 11 of the present embodiment configured as described above will be described. First, the first
Then, the second sample cans A and B are manufactured in the usual procedure for manufacturing cans, and the inside is filled with, for example, coffee or the like and sealed.

Then, the heat and pressure resistant container 13 is placed on the bottom surface 35 and the first and second sample cans A and B
Are fixed in the storage boxes 15 by the can support jigs 36, respectively. Next, a needle portion of the pressure introducing means 14A is pierced into the bottom of the first sample can A, and high-vacuum silicon grease is applied to the periphery thereof to maintain airtightness. Further, a first pipe 32 connected to the needle portion and a second pipe 34 connected to the can pressure measuring unit 12 are connected by a connector 33.

Further, one end of the in-can temperature sensor 25b is pierced into the bottom of the second sample can B, and high-vacuum silicon grease is applied around the end to maintain airtightness. In addition, the introduction part 24a of the pot internal pressure measurement part 24 is
It is open so that the pressure in the shuttle can be directly measured without attaching the pressure introducing means 14B.

The can pressure measuring device 11 completed as described above is placed on a conveyor together with a large number of cans produced in a can production line. At this time, the can internal pressure measuring unit 12 is started by attaching the starting block 22 to the main body of the heat and pressure resistant container 13. Thereby, the control unit 27 of the can internal pressure measurement unit 12
When the set delay time elapses, the can pressure measurement unit 2
3. The pressure measurement is started by operating the in-pipe pressure measurement unit 24 and the storage unit 26.

The can internal pressure measuring device 11 carried into the sterilizing apparatus by the conveyor is sealed in a high-temperature high-pressure pot together with many other cans, and is gradually heated and pressurized. At this time, the control unit 27 of the can internal pressure measuring unit 12 causes the internal pressure measuring unit 23 to measure the internal pressure of the first sample can A every set time, for example, every 3 seconds. The internal pressure measuring unit 24 measures the pressure in the kettle, and the obtained both measurement data are stored in the storage unit 26.

Therefore, the can internal pressure measuring apparatus 11 of the present embodiment can store a maximum of 1000 pieces of data per one measurement in the storage section 26. Therefore, when measuring at 3 second intervals, it takes 3 seconds. × 1000 pieces, that is, changes in the pressure inside the first sample can A and the inside of the kettle can be measured over time for about 50 minutes.

In the present embodiment, the correction unit 29 of the can internal pressure measuring unit 12 uses the internal pressure measuring unit based on the measurement data of the internal temperature sensor 29a disposed in the heat and pressure resistant container 13. Since the measurement result of 23 is appropriately corrected and sent to the storage unit 26, the pressure inside the sample can A can be measured regardless of a change in the temperature inside the heat-resistant and pressure-resistant container 13. ing.

The heat-resistant and pressure-resistant container 13 of the can pressure measuring device 11 of the present embodiment, which has been taken out of the high-temperature and high-pressure oven after the sterilization process is completed, is removed from the storage box 15 and connected to the selector 20 and the external computer 21. The measurement data stored in the storage unit 26 is read. At this time, the switch 20a provided in the selector 20 operates the can pressure, can temperature, or pot pressure stored in the storage unit 26 (in the case of a warmer or the like, the can pressure of the third sample can C). Are selected and read into the computer 21 respectively. Then, by processing the read measurement data, a pressure change graph inside the sample can A and the kettle as shown in FIGS. 6 and 7 is obtained.

The second sample can-can temperature measuring unit 25 that measures the temperature of the B be treated similarly, again 6
And a temperature change graph of the sample can B as shown in FIG. 7 is obtained. According to these graphs, since the temperature inside the can is maintained at the predetermined value for 20 minutes or more, it can be confirmed that the sterilization process is properly performed.

The maximum pressure inside the can at this time is about 5.
5 atm and the pressure in the can considering the pressure in the kettle,
That is, the maximum pressure of the pressure difference in the can with respect to the pressure in the kettle is about 4.2 atm, and it can be confirmed that there is no abnormal change in the can pressure and the pressure is within the allowable strength of the can.

That is, the can internal pressure measuring device 1 of the present embodiment
In 1, the in-can pressure measuring unit 25 and the in-can pressure measuring unit 2 for measuring the pressure in the sample can A and the pressure in the kettle
Since each of them is equipped with the pressure chamber 4, the pressure inside the can and the pressure inside the kettle are measured simultaneously while being placed in the high-temperature high-pressure kettle. Therefore, by calculating the pressure difference between the can pressure and the can pressure, an accurate can pressure in consideration of the influence of the can pressure can be obtained.

The components required for continuously measuring the change in pressure, consisting of the in-can pressure measuring section 23, the pot internal pressure measuring section 24, the storage section 26, the control section 27, and the power supply section 28, are provided. Since the measurement unit 12 is stored and protected in the heat-resistant and pressure-resistant container 13, the pressure inside the can and the pressure inside the kettle can be accurately and continuously obtained even in the state where the measurement unit 12 is placed inside the high-temperature high-pressure kettle.

Then, the in-can temperature measuring section 25 to which the in-can temperature sensor 25a for measuring the temperature in the sample can B is connected.
Is provided, the pressure and the temperature inside the can are measured simultaneously, and the mutual correlation with time is accurately obtained. Further, the control unit 27 measures the pressure and the temperature at predetermined time intervals so that the in-can pressure measuring unit 23, the kettle-internal pressure measuring unit 24, and the storage unit 2
By controlling the number 6, an appropriate number of measurement data is continuously collected in consideration of the measurement time and the capacity of the storage unit 26.

Further, by providing fixing means for mounting and integrally fixing the heat and pressure resistant container 13 and the sample cans A and B, the distance between the sample cans A and B and the heat and pressure resistant container 13 is increased. Can be kept constant, so that a load is prevented from being applied to the pressure introducing means 14A, 14B connecting the two. And since the said fixing | fixed means is equipped with the buffer member 37, even if it flows into the production line with the can internal pressure measuring apparatus 11 of this invention with other cans manufactured, contact with these other cans can be carried out. Vibration and the like are suppressed, accurate measurement data is easily obtained, and the appearance of other cans is hardly damaged.

Further, since the correcting unit 29 for correcting the pressure measured based on the temperature in the heat-resistant pressure-resistant container 13 is provided in the can-internal-pressure measuring unit 12, the internal pressure of the sample can A is reduced. It can be measured without being affected by temperature.

The present invention includes the following embodiments. (1) In the internal pressure measurement device 11 of the present embodiment, the internal temperature measurement unit 25 for measuring the temperature in the second sample can B is built in the internal pressure measurement unit 12, so that the internal temperature of the can is measured. Although the situation was measured, it may be measured by other means. For example, a sample can having a built-in microminiature temperature measurement and recording device for measuring and recording the temperature inside the can may be disposed near the first sample can A to measure the temperature inside the can.

(2) The case in which the present invention is used for measuring the pressure inside a can in a high-temperature high-pressure kettle is described as an example. Can also be used to measure changes in pressure.

(3) As the sample cans to be measured, one for can pressure measurement and one for can temperature measurement were installed, respectively. May be measured for the sample can. In this case, the more sample cans to be measured, the higher the data reliability.

[0052]

According to the present invention, the following effects can be obtained. (1) According to the internal pressure measuring device according to the first aspect, since the internal pressure measuring unit and the internal pressure measuring unit for measuring the pressure in the can and the pressure in the kettle in a cordless manner are provided, It is possible to measure the pressure inside the can and the pressure inside the can in the kettle, and to calculate the differential pressure of the pressure inside the can against the pressure inside the kettle, so that the accurate pressure inside the can that takes into account the effect of changes in the pressure inside the kettle Can be obtained. This makes it possible to continuously and accurately measure the change in the pressure inside the can that is sterilized in the high-temperature and high-pressure kettle in consideration of the influence of the pressure change in the kettle, which could not be measured conventionally. Because it is possible, not only can measurement data that is extremely effective in reducing the thickness of the aluminum can be obtained, but also whether or not the sterilization treatment device is operating properly can be determined more accurately based on the measurement data. it can. Also, placing the heat-resistant pressure-resistant container and the canned
By providing fixing means to fix together, canned
Load is applied to the pressure introduction means connecting between
Can be prevented, and a cushioning member is provided.
Vibration can be suppressed by contact with other cans.
Thus, more accurate measurement data can be obtained. Further
In addition, the appearance of other cans can be prevented from being damaged.
Wear.

According to the apparatus for measuring the internal pressure of a can according to the second aspect,
Since the temperature measuring unit to which the sensor for measuring the temperature inside the can is connected is provided, the pressure and the temperature inside the can can be measured at the same time, and the mutual correlation with time can be accurately obtained.

[0054]

According to the apparatus for measuring the internal pressure of a can according to the third aspect,
The control unit opens the set time interval and sets the pressure and
To measure the temperature inside the can pressure measurement section, the pot internal pressure
By controlling the force measurement unit and the storage unit,
Considering the time and the capacity of the storage unit, an appropriate number of measurement data
Data can be collected continuously and external
Accurate measurement data with synchronization that is easy to process on a computer
Data can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a can internal pressure measuring device according to the present invention.

FIG. 2 is a side view showing one embodiment of a can internal pressure measuring device according to the present invention.

FIG. 3 is a perspective view showing a main part in one embodiment of a can internal pressure measuring device according to the present invention.

FIG. 4 is a perspective view showing an external selector and a computer in one embodiment of the can internal pressure measuring device according to the present invention.

FIG. 5 is a block diagram schematically showing functions of a can internal pressure measuring device according to the present invention.

FIG. 6 is a graph showing changes in pressure inside the can and inside the kettle measured by the internal pressure measuring device of the present invention.

FIG. 7 is a graph showing changes in pressure inside the can and inside the kettle measured by the internal pressure measuring device of the present invention.

FIG. 8 is a cross-sectional view showing a conventional example according to the can internal pressure measuring device of the present invention.

[Explanation of symbols]

 Reference Signs List 11 can internal pressure measuring device 12 can internal pressure measuring unit 13 heat and pressure resistant container 14A, 14B pressure introducing means 15 storage box 21 external computer 23 can internal pressure measuring unit 24 pot internal pressure measuring unit 25 internal temperature measuring unit 25b internal temperature sensor 26 Storage unit 27 Control unit 28 Power supply unit 36 Can support jig 37 Buffer member A First sample can B Second sample can C Third sample can

Continuation of the front page (56) References JP-A-5-180720 (JP, A) JP-A-7-151665 (JP, A) JP-A-9-133597 (JP, A) JP-A-8-94473 (JP) , A) Japanese Utility Model 1-59839 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01L 11/00 B65B 57/00

Claims (3)

(57) [Claims] 1. A can pressure measuring device for continuously measuring a pressure change inside a can sealed in a pot, wherein the pressure inside the can is measured over time; A pot pressure measuring unit that measures a change in pressure in the pot over time; a storage unit that stores data measured by the pot pressure measuring unit and the pot pressure measuring unit; Unit, a control unit that controls the operation of the pot internal pressure measurement unit and the storage unit, a power supply unit that supplies power to each unit, the can pressure measurement unit, the pot internal pressure measurement unit, the storage unit, a heat- and pressure-resistant container of the control unit and the power supply unit stores respectively, and the pressure introducing means for introducing the pressure inside the canned the can internal pressure measuring section, fixing for fixing the heat- and pressure-resistant container and the canned integrally
Means, wherein the fixing means separates the heat-resistant pressure-resistant container and the canned product from each other.
An apparatus for measuring the internal pressure of a can, comprising a buffer member for protecting the can from contact with the can. 2. The can internal pressure measuring device according to claim 1, further comprising: a temperature measuring unit to which a sensor for measuring a temperature inside the can is connected, wherein the storage unit further includes data measured by the temperature measuring unit. Wherein the control unit also controls the temperature measurement unit. 3. The can pressure measuring device according to claim 1, wherein the control unit measures and stores the pressure at predetermined time intervals, and stores the pressure in the can. An internal pressure measurement device for controlling a pressure measurement unit and the storage unit.