JP7031920B1 - Flying object container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means capable of discharging heat generated in an airtight container included in a flying object flying at a high altitude to the outside.
SOLUTION: A container 12 is a cabin of a gas balloon, and covers the inside of a container body 121 which is an airtight container accommodating a crew member H1 and filled with air 122, and a part of the heat absorber. The heat conductive part 125 made of a material having high thermal conductivity such as aluminum in contact with the holding part 123, and the container placed outside the container body 121 and made of a material having high thermal conductivity such as aluminum. A heat absorber holding unit 123 and a heat absorber 124 housed in the heat absorber holding unit 123 are provided. The heat generated by the crew member H1 is transferred to the heat conductive section 125 directly or via the air 122, and then transferred to the heat absorber holding section 123, so that the heat absorber 124 changes from a liquid to a gas. It becomes the heat of vaporization that is absorbed when doing so.
[Selection diagram] Fig. 2

Description

The present invention relates to a container for a flying object such as a balloon or an airship.

There are flying objects such as balloons and airships equipped with cabins, which are containers for accommodating people (crew members). According to such a projectile, a person can move in the air.

For example, Patent Document 1 discloses a flying object including a cabin for accommodating a person. Patent Document 1 proposes a manned drone having a structure in which a drone body containing a person is suspended by a balloon and flies.

Japanese Unexamined Patent Publication No. 2020-97345

For example, in the cabin of a flying object flying at a low altitude of 10,000 meters or less from the ground, the heat generated in the cabin can be easily discharged to the outside by ventilation. Therefore, it is not so difficult to keep the temperature in the cabin within the desired temperature range (for example, within the temperature range where the crew can spend comfortably).

A flying object such as a gas balloon can fly to a high altitude of 50,000 meters or more from the ground. Such a high altitude space is close to a vacuum. Therefore, the cabin of a flying object flying at such a high altitude must have a structure that keeps the inside airtight so that the internal air does not unintentionally leak to the outside during flight, and ventilation should be performed. Can't. Further, in a high altitude space close to a vacuum, the air in contact with the cabin from the outside is thin, so that the cabin is hardly cooled by the convection of the air.

Therefore, in the cabin of a flying object flying at a high altitude, a mechanism for discharging the heat generated in the cabin to the outside is required in order to keep the temperature inside the cabin within a desirable temperature range.

Further, a flying object flying at a high altitude may include an airtight container containing a device such as a photographing device. Even in such a container, similar to the cabin described above, in order to keep the temperature inside the container within a desirable temperature range (for example, within a temperature range in which the device does not cause thermal runaway), the heat generated in the container is discharged to the outside. We need a mechanism to do this.

In view of the above circumstances, the present invention provides means for enabling heat generated in an airtight container of a flying object flying at a high altitude to be discharged to the outside.

The present invention is a container included in a flying object, the container main body accommodating a heat generation source, a heat absorber that absorbs heat with a phase change, and the heat absorbed outside the container main body. The heat absorber holding portion that holds the absorber and the heat transfer body that transfers the heat generated by the heat generation source to the heat absorber through the container body or not through the container body. The container to be provided is proposed as the first aspect.

In the container according to the first aspect, the configuration in which the heat transfer body contains a fluid convected in the container body may be adopted as the second aspect.

In the container according to the first or second aspect, the heat transfer body is a heat made of a heat conductive material arranged so as to be in contact with the heat generation source and the container body or the heat absorber holding portion. A configuration including a conduction portion may be adopted as the third aspect.

In the container according to any one of the first to third aspects, the heat absorber holding portion has an opening for absorbing heat and releasing the heat absorber that has become a gas to the outside. It may be adopted as the fourth aspect.

In the container according to the fourth aspect, a configuration in which a valve for controlling the flow of gas moving from the inside to the outside of the container body through the opening is provided may be adopted as the fifth aspect.

The fifth aspect of the container is configured to include a thermometer that measures the temperature inside the container body and a valve control unit that controls opening and closing of the valve based on the temperature measured by the thermometer. It may be adopted as the aspect of 6.

According to the present invention, even if the projectile flies to a high altitude close to vacuum, the heat generated inside the container body is absorbed by the heat absorber outside the container body, so the temperature inside the container is desirable. It is kept within the temperature range.

The figure which showed the whole composition of the flying object which concerns on one Embodiment. The figure which showed the structure of the container which concerns on one Embodiment. The figure which showed the structure of the container which concerns on one modification. The figure which showed the structure of the container which concerns on one modification. The figure which showed the structure of the container which concerns on one modification.

[Embodiment]
FIG. 1 is a diagram showing an overall configuration of a flying object 1 according to an embodiment of the present invention. The flying object 1 includes a sphere 11 that contains a gas lighter than air such as helium, a container 12 that is suspended from the sphere 11 and flies, and one end is connected to the sphere 11 and the other end is connected to the container 12. A hanging rope 13 which is a plurality of cords to which the portions are connected and the bulb 11 is provided for suspending the container 12 is provided.

FIG. 2 is a diagram showing the configuration of the container 12. The container 12 is attached to the outside of the container body 121, which is a hollow box body for accommodating the crew H1 and the like, the air 122 contained inside the container body 121, and the container body 121. The heat absorber holding portion 123, which is a container smaller than the container main body 121, the heat absorber 124, which is housed in the heat absorber holding portion 123 and is held by the heat absorber holding portion 123, and the inside of the container main body 121. A heat conductive portion 125 arranged so as to cover the above is provided.

The projectile 1 can fly to a high altitude space such as tens of thousands of meters from the ground. Therefore, the container body 121 has an airtight structure so that the air pressure inside is maintained while the projectile 1 is flying and the air 122 contained therein does not unintentionally leak to the outside. .. The container body 121 is provided with a hatch or the like for the crew member H1 to enter and exit before the flight body 1 flies, but the illustration thereof is omitted in FIG.

The container body 121 is made of, for example, fiber reinforced plastic. The material of the container body 121 is preferably lightweight as long as the required strength can be secured, but the material is not limited to fiber reinforced plastics, for example, light metals such as aluminum, plastics that are not fiber reinforced plastics, and combinations thereof. And so on.

The air 122 is a gas containing sufficient oxygen so that the crew member H1 can breathe. Further, by filling the container body 121 with an appropriate amount of air 122, the pressure inside the container body 121 is kept at an atmospheric pressure.

The heat absorber holding portion 123 is a container for accommodating the heat absorber 124, and is provided with one or more openings O on the upper surface thereof. The opening O is an exhaust port for discharging the heat absorber 124, which has become a gas in the heat absorber holding portion 123, to the outside. The heat absorber holding portion 123 is made of a lightweight material having high thermal conductivity (for example, a light metal such as aluminum).

The heat absorber 124 is a liquid that absorbs heat and becomes a gas. It is desirable that the heat absorber 124 is a liquid having a boiling point of, for example, about 25 degrees Celsius under atmospheric pressure at an altitude at which the projectile 1 stays for a long time during flight. In that case, when the temperature inside the container body 121 becomes higher than 25 degrees Celsius, the heat absorber 124 reaches the boiling point and becomes a liquid, and at that time, the heat absorber 124 absorbs heat as heat of vaporization, so that the inside of the container body 121 The temperature is kept slightly higher than 25 degrees Celsius.

The heat conductive portion 125 is a member for conducting the heat generated by the crew member H1 or the like in the container main body 121 to the heat absorber holding portion 123. The heat conductive portion 125 is made of a lightweight and highly heat conductive material (for example, a light metal such as aluminum). The heat conductive portion 125 covers the inside of the container main body 121, and a part thereof is in contact with the heat absorber holding portion 123 through a hole provided so as to penetrate the inside and outside of the container main body 121.

In the container body 121, a part of the heat generated by the crew member H1 which is a heat generation source or the device (not shown in FIG. 2) is in contact with the heat generation source in the heat conduction portion 125. It moves to the heat conductor 125, moves to the heat absorber holding unit 123 through the heat conductor 125, moves from the heat absorber holding unit 123 to the heat absorber 124, and moves to the heat absorber 124 as heat of vaporization. Be absorbed.

Further, a part of the heat generated by the heat generation sources in the container body 121 moves to the air 122 in contact with those heat generation sources, and the position where the air 122 comes into contact with the heat conduction portion 125 due to, for example, convection or the like. When it moves to, it moves from the air 122 to the heat conductive part 125, moves to the heat absorber holding part 123 through the heat conductive part 125, moves from the heat absorber holding part 123 to the heat absorber 124, and heats as vaporization heat. It is absorbed by the absorber 124.

As described above, the air 122 and the heat conductive portion 125 are examples of heat transfer bodies that transfer heat generated by a heat generation source in the container body 121 to the heat absorber 124.

According to the container 12 having the above configuration, even when the projectile 1 flies in a space close to a vacuum, the temperature inside the container body 121 is maintained within a desirable temperature range.

[Modification example]
The flying object 1 according to the above-described embodiment may be variously modified within the scope of the technical idea of the present invention. An example of these variations is shown below. In addition, two or more of the following modified examples may be combined as appropriate.

(1) In the flying object 1 according to the above-described embodiment, the opening O (exhaust port) provided in the heat absorber holding portion 123 is always open. Alternatively, the container 12 may be provided with a valve provided to close the opening O. This valve controls the flow of gas moving from the inside to the outside of the container body 121 through the opening O.

FIG. 3 is a diagram showing the configuration of the container 12 according to this modified example. In this modification, the container 12 includes a valve 126 arranged so as to close the opening O and a valve control unit 127 for controlling the opening and closing of the valve 126, in addition to the components included in the container 12 according to the above-described embodiment. , A thermometer 128 for measuring the temperature inside the container body 121 is provided. The thermometer 128 passes the temperature data indicating the measured temperature to the valve control unit 127. The valve control unit 127 opens the valve 126 when the temperature indicated by the temperature data delivered from the thermometer 128 when the valve 126 is closed exceeds a predetermined upper limit threshold value. Further, the valve control unit 127 closes the valve 126 when the temperature indicated by the temperature data delivered from the thermometer 128 when the valve 126 is open falls below a predetermined lower limit threshold value.

According to the container 12 according to this modification, the temperature inside the container body 121 is desirable even if the boiling point of the heat absorber 124 at the atmospheric pressure in the space where the flying object 1 is flying is not necessarily within the desirable temperature range. Maintained in the belt.

In this modification, the container 12 does not have the valve control unit 127 and the thermometer 128, and opens when the pressure difference between the inside and outside of the heat absorber holding unit 123 exceeds a predetermined lower limit threshold value, and the pressure inside and outside the heat absorber holding unit 123 opens. A valve that closes when the difference falls below a predetermined upper threshold may be employed as the valve 126.

(2) In the above-described embodiment, the container body 121 is a cabin that accommodates a person, but the container body 121 does not have to be a person. FIG. 4 is a diagram illustrating a case where the container main body 121 accommodates the photographing apparatus H2. The photographing apparatus H2 is a heat generation source that generates heat inside the container body 121 during the photographing of an image.

In this modification, an opening is provided in the portion of the wall surface of the container main body 121 in the photographing region (angle of view) of the photographing apparatus H2, and the light transmitting plate 1211 is installed so as to close the opening. ing. The photographing device H2 transmits the light transmitting plate 1211 and senses the light coming in from the outside to take an image.

In the example of FIG. 4, the container body 121 (the portion other than the light transmitting plate 1211) is made of a material having high thermal conductivity such as aluminum, and the container body 121 is provided with the container 12 according to the above-described embodiment. It also serves as the heat conductive portion 125. Therefore, in this example, instead of the heat conductive portion 125, the container 12 is made of a material having a high thermal conductivity (for example, aluminum) that is in contact with each of the photographing device H2 and the container body 121 and also serves as a stand for the photographing device H2. It is equipped with a heat sink 129 made.

In this example, a part of the heat generated by the photographing apparatus H2 is transferred to the heat absorber 124 via the heat sink 129, the container body 121, and the heat absorber holding portion 123, and is absorbed by the heat absorber 124 as heat of vaporization. Will be done.

Further, a part of the heat generated by the photographing device H2 moves to the air 122 in contact with the photographing device H2, and when the air 122 moves to a position in contact with the container body 121 due to, for example, convection, the air 122 is transferred to the container. It moves to the main body 121, then moves to the heat absorber 124 via the container main body 121 and the heat absorber holding portion 123, and is absorbed by the heat absorber 124 as heat of vaporization.

In addition, instead of or in addition to the photographing apparatus H2, an apparatus of a type other than the photographing apparatus may be accommodated in the container body 121.

FIG. 5 is a diagram showing a container 12 according to another example of this modified example. In the example of FIG. 5, the container body 121 (the portion other than the light transmitting plate 1211) and the heat absorber holding portion 123 are made of a material having low thermal conductivity such as fiber reinforced plastic.

Further, the container 12 of this example is arranged so that a part of the container 12 is in contact with the photographing apparatus H2 and a part of the container 12 is in contact with the heat absorber 124 through a hole formed in the container body 121 so as to penetrate inside and outside. It is provided with a heat sink 129 made of a material (heat conductive material) such as copper having high heat conductivity. The heat sink 129 is an example of a heat transfer body that transfers heat generated by the photographing apparatus H2 (heat generation source) to the heat absorber 124 without passing through the container body 121.

The heat absorber 124 may be made of a material having high thermal conductivity such as aluminum, and a part of the heat sink 129 may be in contact with the heat absorber holding portion 123 instead of the heat absorber 124.

(3) In the above-described embodiment, the flying object is a gas balloon, but the type of the flying object is not limited to the gas balloon, and may be another type of flying object such as a hot air balloon or an airship.

(4) In the above-described embodiment, the heat absorber 124 is a liquid that absorbs heat and becomes a gas, but the heat absorber 124 may be a solid that absorbs heat and becomes a liquid. In that case, the heat absorber 124 that has absorbed the heat of vaporization and turned from a solid to a liquid may further absorb the heat of vaporization and become a gas.

If the heat absorber 124 absorbs heat and becomes a liquid and then does not become a gas, the heat absorber holding portion 123 may not have the opening O.

1 ... Flying object, 11 ... Ball crust, 12 ... Container, 13 ... Suspension line, 121 ... Container body, 122 ... Air, 123 ... Heat absorber holding part, 124 ... Heat absorber, 125 ... Heat conduction part, 126 ... Valve, 127 ... Valve control unit, 128 ... Thermometer, 129 ... Heat sink, 1211 ... Light transmission plate.

Claims (6)

It is a container that the flying object has.
The container body that houses the heat source and
A heat absorber that absorbs heat as the phase changes ,
A heat absorber holding portion that is attached to the outside of the container body and holds the heat absorber,
A container including a heat transfer body that transfers heat generated by the heat generation source to the heat absorber through or without the container body. The container according to claim 1, wherein the heat transfer body includes a fluid convected in the container body. The first or second aspect of the present invention, wherein the heat transfer body includes a heat conductive portion made of a heat conductive material arranged so as to be in contact with the heat generating source and the container body or the heat absorber holding portion. container. The container according to any one of claims 1 to 3, wherein the heat absorber holding portion has an opening for absorbing heat and releasing the heat absorber that has become a gas to the outside. The container according to claim 4, further comprising a valve for controlling the flow of gas moving from the inside to the outside of the container body through the opening. A thermometer that measures the temperature inside the container body,
The container according to claim 5, further comprising a valve control unit that controls the opening and closing of the valve based on the temperature measured by the thermometer.

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