JP3129087U - In-vessel decompression device - Google Patents

Abstract

An object of the present invention is to provide an in-container decompression device that can perform sealing of the opening and decompression in the container for a container having an opening, and can maintain a constant decompressed state after the opening is sealed.
In an in-container decompression device 1 attached to a container having an opening, a lid body portion 11 for sealing the opening, a decompression mechanism portion 14 for sucking air from the inside of the container, and the decompression mechanism portion 14 A check valve 15 disposed in the intake path, a pressure detection unit 16 that detects the pressure in the container, and a power switch 17 that switches the supply of the drive power supply voltage to the decompression mechanism unit 14 are provided. When the pressure detection unit 16 detects that the switching state of the power switch 17 is the state where the driving power supply voltage is supplied and the inside of the container is equal to or higher than the predetermined pressure, the pressure reducing mechanism unit 14 is comprised so that the suction from the inside of the said container may be performed.
[Selection] Figure 3

Description

  The present invention relates to an in-container decompression device used by being attached to a container having an opening.

  In general, foods are often stored and distributed in a state where the food is stored in a container having an opening, and the opening of the container is sealed with a lid. However, some foods have the characteristic of being easily altered. For this reason, the container for storing foods is made into a reduced-pressure state in the container as disclosed in, for example, Japanese Patent Laid-Open No. 06-000058 or Japanese Patent Laid-Open No. 2001-046552. It has been proposed to enable stable storage over a long period of time without altering the species.

However, the conventional food decompression container is suitable for storage of foods because it requires processing or operation such as connecting the container to a decompression pump when decompression in the container becomes necessary. However, it is not necessarily suitable when used for distribution of foods, re-storage after opening the container, and the like.
For example, roasted coffee beans release a large amount of carbon dioxide gas after roasting. Therefore, after degassing for a certain period (for example, 2-3 days), a container in a reduced pressure state (for example, a container in which aluminum foil is laminated) ) It is distributed in a state of being housed inside. That is, since a certain period different from the distribution process is required before the distribution process, it is not preferable from the viewpoint of providing foods with high freshness to the user by rapid distribution.
In addition, after a user has opened a container once through a distribution process, the user may not always properly perform decompression in the container. In other words, with regard to the re-storage after the container is opened, there is a possibility that the food stored therein may be altered without being able to properly depressurize the container.

The present invention is an in-container decompression device devised in view of the above points. That is, an in-container decompression device used by being attached to a container having an opening, wherein the lid body part engages with a formation part of the opening in the container and seals the opening, and the lid body part The opening is sealed by the pressure reducing mechanism that performs intake from the inside of the container whose opening is sealed, the check valve that prevents the backflow of air in the intake path by the pressure reducing mechanism, and the lid A pressure detection unit that detects a pressure in the container; and a power switch that switches whether to supply a drive power supply voltage to the decompression mechanism unit, wherein the decompression mechanism unit is configured so that the switching state of the power switch is the drive. When the pressure detection unit detects that the power supply voltage is not supplied or the inside of the container is lower than a predetermined pressure, the power switch is turned off without performing intake from the inside of the container. A supply chromatic condition of the recombinant state the drive power supply voltage, and, if the vessel is the predetermined pressure or more, characterized in that it is configured to perform suction from the container.
When the in-container decompression apparatus having the above configuration is attached to a container having an opening, the lid body seals the opening. Then, when the pressure detection unit detects that the switching state of the power switch is the state where the drive power supply voltage is supplied and the inside of the container is equal to or higher than a predetermined pressure, the decompression mechanism part performs intake from the inside of the container . Thereby, the inside of a container will be in the pressure-reduced state. After that, for example, when the inside of the container becomes lower than a predetermined pressure, the decompression mechanism unit finishes the intake from the inside of the container, but is again in a state where the drive power supply voltage is supplied and the inside of the container is equal to or higher than the predetermined pressure. Then, the decompression mechanism performs intake from the container. Therefore, a constant reduced pressure state is maintained in the container.

The power switch is configured such that when the lid portion seals the opening, the power supply voltage is not switched from being supplied to the pressure reducing mechanism portion, and is switched to being supplied. Also good.
According to such a configuration, since the power switch is automatically switched when the lid portion seals the opening, the inside of the container is maintained in a constant depressurized state without requiring manual operation of the power switch. It will be.

The in-container decompression device includes a housing part integrally connected to the lid body part, a canopy part covering a space formed by the lid body part and the housing part, and driving to the decompression mechanism part A power supply battery that supplies power supply voltage, and at least the pressure reducing mechanism portion, the pressure detection portion, and the power supply battery are housed in a space formed by the lid portion and the housing portion, and the space is The said canopy part to cover may be comprised so that attachment or detachment is possible.
According to such a configuration, the decompression mechanism, the pressure detector, the power supply battery, and the like are accommodated in the interior of the decompression device in the container, that is, in the space formed by the lid portion and the housing portion. Can be easily realized. In addition, since the power supply battery supplies the drive power supply voltage to the decompression mechanism section, it can operate without requiring connection to an external power supply. In addition, even in that case, the canopy portion can be attached and detached, so that it is possible to easily deal with replacement of the power supply battery and the like.

Further, in the in-container decompression device, the lid portion is engaged with the opening formation portion by a screw structure, and the canopy portion is detachably engaged with the housing portion by a reverse screw structure of the screw structure. It may be configured as described above.
According to such a configuration, the sealing of the opening and the removal of the canopy portion are performed by operations in the same direction. Therefore, by realizing a compact device, it is possible to suppress the occurrence of erroneous operations and the like even when they are arranged in the vicinity of each other.

Further, the in-container decompression device may include an indicator unit that performs display output on a detection result by the pressure detection unit.
According to such a configuration, by referring to the display output of the indicator unit, the device user (the user of the container contents) can grasp and recognize the reduced pressure state in the container. Convenience is excellent.

  When the in-container decompression device according to the present invention is used, the decompression mechanism portion sucks air from the inside of the container while being attached to the container having an opening, and thereby the inside of the container is decompressed. In addition to simply depressurizing the inside of the container, the operation of the decompression mechanism is controlled based on the detection result of the pressure in the container to maintain the inside of the container in a constant depressurized state. Therefore, for example, even if the stored item releases a large amount of carbon dioxide gas such as roasted coffee beans, the container can be transported and distributed while discharging the carbon dioxide gas outside the container. This makes it possible to provide stored items with a high freshness to the user. Furthermore, even after the container is once opened, if the container decompression device of the present invention is attached to the container and sealed, the container decompression device performs decompression in the container. Even when re-storing, proper decompression in the container can be performed, and it can be avoided that the contents stored in the container are altered due to re-storing. In other words, using the in-container decompression device of the present invention, for example, when storing foods having the characteristic of being easily altered, in addition to being able to favorably preserve it, the distribution and after opening the container It is possible to perform re-storage and the like well.

  Hereinafter, an in-container decompression device according to the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view showing an example of a usage form of an in-container decompression device according to the present invention. As shown in the figure, the in-container decompression device 1 according to the present invention is used by being attached to a container 2 having an opening 2a.

  The container 2 to which the in-container decompression device 1 is attached is formed, for example, in a bottomed and uncovered cylindrical shape made of a metal material, a glass material, a resin material, or the like, and has a feature that it is easily altered like foods. A thing is configured to be stored in a state where it can be taken in and out from the opening 2a. Specifically, it is conceivable to store roasted coffee beans that release a large amount of carbon dioxide gas after roasting, or store fresh foods such as fruits and vegetables. However, the stored items are not particularly limited. That is, the container 2 may be for storing things other than foods. Further, the shape of the container 2 is not particularly limited as long as it is a shape suitable for storage of stored items, carrying after storage, and the like.

  The in-container decompression device 1 attached to such a container 2 functions as a lid that seals the opening 2a by engaging with a portion 2b (a so-called neck portion) 2b of the opening 2a in the container 2. Furthermore, it not only seals the opening 2a of the container 2, but also functions as a decompression device for bringing the interior of the container 2 into a decompressed state. For this purpose, the in-container decompression device 1 is configured as described below.

  FIG. 2 is a side sectional view showing an example of a schematic configuration of the in-container decompression apparatus according to the present invention. As shown in the figure, the in-container decompression device 1 includes a lid body portion 11 in order to function as a lid body that seals the opening 2 a of the container 2, and a housing portion in addition to the lid body portion 11. 12 and the canopy 13 are provided to form the outer shape. In addition, although it is possible to form the cover part 11, the housing part 12, and the canopy part 13 with a resin material using a well-known molding technique, even if it formed with another member (for example, metal material). I do not care.

The lid part 11 is composed of a plate-shaped sealing plate part 11a that seals the opening 2a, and an engaging part 11b that is formed in a shape that can be fitted to the forming part 2b of the opening 2a.
A packing 11c made of an elastic material is affixed to a contact portion of the surface of the sealing plate portion 11a on the container 2 side with the formation portion 2b of the opening 2a in order to improve the sealing performance when the opening 2a is sealed. It is desirable that In addition, when the stored items in the container 2 are foods, a non-woven fabric 11d considering hygiene is attached to a portion other than the attachment location of the packing 11c on the surface of the sealing plate portion 11a on the container 2 side. It is desirable that
The engaging portion 11b is provided with a structure for engaging with the formation portion 2b of the opening 2a. Examples of the structure include a screw structure in which a male screw and a female screw are screwed together. However, it is not limited to the screw structure, for example, a latch structure that enables so-called one-touch attachment / detachment such as a lid used for a powder coffee food storage bottle or a toothpaste tube that is widely distributed. It does not matter.

  The housing part 12 has a cylindrical shape provided integrally with the lid part 11. By the housing part 12, a space whose capacity is determined by the height of the housing part 12 is formed on the sealing plate part 11 a in the lid part 11 (the surface opposite to the container 2).

  The canopy portion 13 covers a space formed by the lid body portion 11 and the housing portion 12. The canopy portion 13 is preferably configured to be removable from the lid portion 11 and the housing portion 12. For example, if the lid portion 11 is engaged with the formation portion 2b of the opening 2a by a screw structure, the canopy portion 13 is detachably engaged with the housing portion 12 by the reverse screw structure of the screw structure. It is conceivable to configure. However, it is not necessarily limited to the reverse screw structure, and it is also conceivable that the canopy portion 13 is detachably attached to the housing portion 12 by using, for example, a general fastener such as a bolt or a pin.

  FIG. 3 is a schematic diagram showing a configuration example of the internal structure of the in-container decompression device according to the present invention. As shown in the figure, in the space formed by the lid body portion 11 and the housing portion 12 and covered by the canopy portion 13, the decompression mechanism portion 14, the check valve 15, the pressure detection portion 16, and the power switch 17 A power supply battery 18 and an indicator unit (not shown) are disposed.

  The decompression mechanism portion 14 performs intake air from the inside of the container 2 whose opening 2 a is sealed by the lid body portion 11. For this purpose, the decompression mechanism section 14 is made of an elastic material such as a resin material or a rubber material, creates a negative pressure state by vibration and realizes a function as a pump, and a motor serving as a drive source for vibrating the diaphragm 14a 14b, a suction pipe 14c arranged so as to pass through the lid 11 and communicate with the inside of the container 2, and an exhaust hole 14d for discharging the gas sucked from the inside of the container 2 to the outside of the apparatus. It is configured. However, it is not necessarily limited to such a configuration, and may be configured using other known technology (pump technology) as long as intake from the container 2 can be performed. .

  The check valve 15 prevents the backflow of air in the intake path by the pressure reducing mechanism 14. Specifically, it is conceivable to use the diaphragm 14a in the decompression mechanism unit 14 to prevent the backflow of air by utilizing the sealed state of the intake path by the diaphragm 14a. However, instead of using the diaphragm 14a, a check valve 15 having a known valve structure may be provided separately from the diaphragm 14a. In that case, the check valve 15 may be disposed at any location on the intake path by the pressure reducing mechanism 14, and the location is not particularly limited.

  The pressure detector 16 detects the pressure in the container 2 whose opening 2 a is sealed by the lid 11. Therefore, the pressure detection unit 16 includes a pressure sensor 16a that detects pressure, and a pressure suction pipe 16b that is disposed so as to pass through the lid 11 and communicate with the inside of the container 2. Yes. As the pressure sensor 16a, for example, a sensor configured to be in a non-conductive state when it is detected that the pressure is lower than a predetermined pressure (set pressure) and to be in a conductive state when it is detected that the pressure is higher than the predetermined pressure is used. It is possible. In addition, about the method of the pressure detection by the pressure sensor 16a, etc., since it is sufficient to use a known technique, the description is omitted here.

The power switch 17 switches whether to supply the drive power supply voltage to the decompression mechanism section 14. Specifically, the driving power supply voltage here corresponds to a voltage necessary for the motor 14b of the decompression mechanism section 14 to operate.
As the power switch 17, it is conceivable to use a generally known button switch, toggle switch, or the like. In that case, for example, an operation button, an operation toggle, or the like protrudes from the canopy portion 13 or the housing portion 12 toward the outside of the device so that the device user (such as a user of the container contents) can operate. It is assumed that the power switch 17 is provided.
However, when the lid 11 seals the opening 2a in order to eliminate the need for a switch operation by the user of the apparatus, the power switch 17 automatically switches from supplying no driving power supply voltage to supplying it accordingly. It is desirable to use one configured to be replaced. As the power switch 17 that realizes such automatic switching, for example, it is conceivable to use a microswitch that is switched intermittently depending on whether or not the container 2 is in contact with the formation portion 2b of the opening 2a.

The power supply battery 18 serves as a supply source of the drive power supply voltage supplied to the decompression mechanism unit 14. For this purpose, these are electrically connected between the power supply battery 18 and the motor 14b and the pressure detector 16 of the decompression mechanism 14, and between the motor 14b and the pressure detector 16 and the power switch 17. A power cable 18a is arranged.
As the power battery 18, for example, a battery that supplies DC 12 V may be used. In this case, the battery may be a rechargeable secondary battery (storage battery) or a non-chargeable primary battery (dry battery). In the case of a primary battery, it is assumed that the battery retainer 18b for fixing the power battery 18 is configured so that it can easily cope with the replacement of the power battery 18.
The power battery 18 is not an essential configuration. For example, in the case of receiving power supply from outside the apparatus, it is conceivable to arrange a power connector for connecting a power cable instead of the power battery 18. As described above, when power is supplied from outside the apparatus using the power connector, the power supply from the AC power supply can be easily handled through the DC adapter.
On the other hand, when the power supply battery 18 is used as the supply source of the drive power supply voltage, connection to the outside by a power cable or the like is not necessary. Therefore, as described above, the power supply battery 18 is not an essential component, but considering the handling (transportation and the like) in a state where the in-container decompression device 1 is attached to the container 2, a power supply voltage source is a power source. It is desirable to use the battery 18.

  The indicator unit performs display output about the detection result by the pressure detection unit 16. Specifically, for example, an LED (Light Emitting Diode) that is turned on or off according to whether or not the pressure sensor 16a of the pressure detection unit 16 is in a conductive state is used so that the LED can be viewed from outside the apparatus. It is possible to arrange and configure. Further, not only the state of the pressure sensor 16a but also the on / off state of the power switch 17 may be used. Although this indicator unit is not an essential component, it is desirable to provide the indicator unit from the viewpoint of notifying the apparatus user of the pressure detection result and the apparatus operating state.

  Next, an example of processing operation in the in-container decompression apparatus 1 configured as described above will be described.

  When using the in-container decompression device 1 having the above-described configuration, first, a container (for example, roasted coffee beans after roasting) is stored in the container 2. Then, the lid portion 11 of the in-container decompression device 1 is engaged with the formation portion 2b of the opening 2a in the container 2 in which the stored items are stored, thereby sealing the opening 2a. Up to this point, the operation is performed by a manual operation (for example, a manual operation by a stored item dealer) or a dedicated robot (for example, a handling robot in a stored item production line).

  When the lid portion 11 of the in-container decompression device 1 seals the opening 2a of the container 2 in which the stored items are stored, if the power switch 17 is of an automatic switching type, the power switch 17 is set according to the sealing. The so-called ON state is switched, so that the drive power supply voltage from the power supply battery 18 can be supplied to the decompression mechanism section 14. When the power switch 17 is not an automatic switching type, the power switch 17 is switched to the on state by manual work or work using a dedicated robot.

  At this time, since the inside of the container 2 is normal pressure (atmospheric pressure), the pressure detection unit 16 detects that the pressure sensor 16a, that is, the internal pressure of the container 2 is equal to or higher than a predetermined pressure (set pressure). It is in a state. Therefore, when the power switch 17 is turned on, the pressure sensor 16a is in a conductive state, so that the drive power supply voltage from the power battery 18 is supplied to the decompression mechanism unit 14 as it is. The motor 14b starts operating. That is, when the operation of the motor 14b starts, the diaphragm 14a vibrates (moves up and down), sucks the air in the container 2 from the suction pipe 14c, and discharges the sucked air out of the apparatus through the exhaust hole 14d. As a result, the inside of the container 2 in the state where the opening 2 a is sealed by the lid portion 11 of the in-container decompression device 1 is gradually depressurized with the intake of the decompression mechanism unit 14.

  When the pressure in the container 2 reaches a pressure lower than the predetermined pressure, this is detected by the pressure detection unit 16. That is, the pressure sensor 16a of the pressure detector 16 detects that the inside of the container 2 is lower than a predetermined pressure through the pressure suction pipe 16b, and enters a non-conductive state. Thereby, when the inside of the container 2 reaches a pressure lower than the predetermined pressure, the pressure sensor 16a becomes non-conductive, so that the drive power supply voltage from the power supply battery 18 is not supplied to the decompression mechanism unit 14, and the decompression mechanism unit 14 The motor 14b in FIG. That is, the intake operation from the inside of the container 2 is stopped.

  In this way, the decompression mechanism unit 14 performs intake from the inside of the container 2 when the switching state of the power switch 17 is in a state where the driving power supply voltage is supplied and the inside of the container 2 is equal to or higher than a predetermined pressure. However, when the pressure detection unit 16 detects that the inside of the container 2 is lower than the predetermined pressure, the intake from the inside of the container 2 is not performed. Even when the switching state of the power switch 17 is switched to the state in which the driving power supply voltage is not supplied for some reason (for example, removal of the in-container decompression device 1 from the container 2), the decompression mechanism unit 14 is Do not inhale from the air.

  When the inside of the container 2 is at a pressure lower than a predetermined pressure and the motor 14b stops operating in this state, in the pressure reducing mechanism 14, the diaphragm 14a seals the intake path in the pressure reducing mechanism 14, and the check valve 15 will function. Therefore, in the container 2, the pressure reduction state by the pressure reduction mechanism unit 14, that is, a state where the pressure is lower than the predetermined pressure is maintained.

  Thereafter, when the pressure in the container 2 rises to a predetermined pressure or higher due to, for example, air leak, the pressure sensor 16a detects this. Therefore, the pressure sensor 16a becomes conductive, and the drive power supply voltage from the power battery 18 is supplied to the decompression mechanism unit 14 as it is, so that the decompression mechanism unit 14 starts decompressing the container 2 again.

  By performing the above processing operation and repeatedly starting or stopping depressurization in accordance with the detection result of the internal pressure of the container 2, the in-container decompression device 1 is arranged in the container 2 in which the opening 2a is sealed. A constant reduced pressure state (a reduced pressure state where the pressure value falls within a certain range) can be maintained.

  Therefore, if the in-container decompression device 1 is used, the decompression mechanism unit 14 sucks air from the inside of the container 2 while being attached to the container 2 having the opening 2a, thereby bringing the inside of the container 2 into a decompressed state. In addition to simply reducing the pressure inside the container 2, the operation of the pressure-reducing mechanism unit 14 can be controlled based on the pressure detection result in the container 2 to maintain the inside of the container 2 in a constant pressure-reduced state. Therefore, even if the stored item releases a large amount of carbon dioxide gas such as roasted coffee beans, it becomes possible to transport and distribute the container 2 while discharging the carbon dioxide gas to the outside of the container 2, It is possible to provide the user with a stored item with high freshness through quick distribution. Further, for example, even after the container 2 is once opened, if the container decompression device 1 is attached to the container 2 and sealed, the container decompression device 1 decompresses the container 2. Even when re-storing after opening, it is possible to perform appropriate pressure reduction in the container 2, and avoiding alteration of the contents in the container 2 due to re-storing.

  That is, if the decompression device 1 in the container is used, for example, even when foods having the characteristic of being easily altered are stored in the container 2, in addition to being able to be suitably stored, the distribution and container opening This makes it possible to perform the subsequent re-storing and the like satisfactorily.

Furthermore, it can be said that the in-container decompression device 1 is extremely excellent in convenience for the user of the device in the following points.
For example, if the power switch 17 is automatically switched when the lid 11 seals the opening 2a, the inside of the container 2 is kept at a constant pressure without requiring manual operation of the power switch 17. Since it is maintained in a state, it is excellent in convenience for the apparatus user.
Further, in the in-container decompression device 1, main components for bringing the interior of the container 2 into a decompressed state in the space formed by the lid portion 11 and the housing portion 12, that is, at least the decompression mechanism portion 14, the pressure detection portion. 16 and the power source battery 18 are housed, it is easy to make the device compact, and it is possible to improve the ease of handling and convenience when transporting and distributing in the state of being attached to the container 2. . Furthermore, by using the power supply battery 18, it becomes possible to operate without requiring connection to an external power supply, but even in that case, by replacing the power supply battery 18 by making the canopy part 13 removable. This also makes it possible to improve convenience for the user of the apparatus. In addition, if the canopy 13 is removed by, for example, a reverse screw structure so as to be operated in the same direction as the sealing of the opening 2a, the respective devices are arranged in the vicinity by realizing the compactness of the device. Even in this case, it is possible to suppress the occurrence of an erroneous operation such as accidentally opening the opening 2a in an attempt to remove the canopy 13, so that the convenience for the apparatus user can be improved in this respect as well. It becomes possible.
Furthermore, when the indicator part which performs the display output about the detection result in the pressure detection part 16 used as the reference | standard for maintaining the inside of the container 2 to a fixed pressure reduction state is provided, refer to the display output of the said indicator part By doing so, the device user can grasp and recognize the decompressed state in the container 2 and the operating state of the in-container decompressing device 1, so that the convenience of the device user is excellent even in this respect. It will be a thing.

  The in-container decompression device 1 described above is one of the preferred embodiments of the present invention. However, the present invention is not limited to the contents, and may be appropriately changed without departing from the gist thereof. Is possible. For example, in the above description, the case where the start / stop of the intake operation in the decompression mechanism unit 14 is switched as a result of the pressure sensor 16a being in the conductive state / non-conductive state is exemplified, but the same function is realized. As long as it is a thing, you may make it perform operation control using another structure (for example, structure which performs operation control using the IC chip called a microcomputer). Further, the in-container decompression device 1 may constitute an in-container decompression system together with the container 2, and may be handled as the in-container decompression system.

It is an external appearance perspective view which shows an example of the utilization form of the decompression device in a container which concerns on this invention. It is side sectional drawing which shows an example of schematic structure of the decompression device in a container concerning this invention. It is a schematic diagram which shows the structural example of the internal structure of the decompression device in a container which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Container decompression device, 2 ... Container, 2a ... Opening, 2b ... Formation part, 11 ... Cover part, 11a ... Sealing plate part, 11b ... Engagement part, 11c ... Packing, 11d ... Nonwoven fabric, 12 ... Housing , 13 ... Canopy part, 14 ... Pressure reducing mechanism part, 14a ... Diaphragm, 14b ... Motor, 14c ... Suction pipe, 14d ... Exhaust hole, 15 ... Check valve, 16 ... Pressure detection part, 16a ... Pressure sensor, 16b ... Pressure suction pipe, 17 ... Power switch, 18 ... Power battery, 18a ... Power cable, 18b ... Battery presser

Claims (5)

An in-container decompression device used by being attached to a container having an opening,
A lid portion that engages with a formation portion of the opening in the container and seals the opening;
A decompression mechanism that performs intake from the inside of the container in which the opening is sealed by the lid, and
A check valve that prevents backflow of air in the intake path by the pressure reducing mechanism;
A pressure detector for detecting the pressure in the container in which the opening is sealed by the lid, and
A power switch for switching the presence or absence of supply of the drive power supply voltage to the decompression mechanism unit,
When the pressure detection unit detects that the switching state of the power switch is a state in which the driving power supply voltage is not supplied or that the inside of the container is lower than a predetermined pressure, Intake from the container is not performed when intake from the container is not performed, the switching state of the power switch is in a state where the drive power supply voltage is supplied, and the interior of the container is equal to or higher than the predetermined pressure. An in-container decompression device characterized by being configured to perform.   2. The power switch is configured to switch from supplying no driving power supply voltage to supplying the power to the decompression mechanism when the lid portion seals the opening. In-vessel decompression device. A housing portion integrally provided with the lid portion;
A canopy covering the space formed by the lid and the housing; and
A power supply battery for supplying a drive power supply voltage to the decompression mechanism section,
The space formed by the lid portion and the housing portion accommodates at least the pressure reducing mechanism portion, the pressure detection portion, and the power supply battery, and the canopy portion that covers the space is configured to be detachable. The in-container decompression device according to claim 1 or 2, characterized in that.   The lid portion is configured to be engaged with a portion where the opening is formed by a screw structure, and the canopy portion is configured to be detachably engaged with the housing portion by a reverse screw structure of the screw structure. The in-container decompression device according to claim 3.   The decompression device in a container according to any one of claims 1 to 4, further comprising an indicator unit that performs display output on a detection result by the pressure detection unit.

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