JP7515932B1 - Container for projectiles and projectiles - Google Patents

Abstract

[Problem] A means for reducing inconveniences caused by condensation in a container for a flying object is proposed. [Solution] A container for a flying object includes an airtight container body, a heat absorbing layer covering a first area of the container body, a heat conductive portion extending from the wall to a window so as to conduct heat from the first area of the wall around the window to the window, and a water collection container for storing water generated by condensation in a second area of the wall of the container body that is not covered by the heat absorbing layer. When the container is exposed to sunlight, the portion covered by the heat absorbing layer is heated, and then the window is heated through the heat conductive portion. As a result, the second area of the wall that is not covered by the heat absorbing layer becomes the coldest, and condensation occurs in the second area. The water generated by condensation flows into the water collection container 134 and is stored therein. [Selected Figure] Figure 2

Description

The present invention relates to a container for a flying object.

Many flying objects that fly using buoyancy, such as balloons and airships, and many flying objects that fly using lift, such as airplanes and helicopters, are equipped with a container (vessel container) for accommodating transported items (including people). For example, a flying object that transports passengers is equipped with a passenger container called a passenger ship or cabin.

As the flying object rises from the ground, the higher the flying object's altitude, the lower the outside air temperature of the flying object's container. The walls of the flying object's container lose heat to the cooler air in contact with the outside, causing their temperature to drop. Then, the air inside the flying object's container that is in contact with the cooler wall from the inside is cooled by the wall, and the water vapor in the air turns into water and adheres to the inside of the wall as water droplets, a phenomenon known as condensation.

When condensation occurs in the container of the flying object, for example, the resulting water droplets may run down and wet nearby objects. Also, when condensation occurs on the windows of the container of the flying object, there are places where visibility through the windows is reduced.

Patent Document 1, for example, is an example of a patent document that discloses a technique for solving the above problem. Patent Document 1 describes a container for a flying object that has a first portion that has a higher thermal conductivity than a portion that constitutes the inner surface of the container body and is exposed to the inside of the container body, a second portion that is exposed to the outside of the container body, and a third portion that is connected to both the first portion and the second portion, and is equipped with a condensation promotion member that is a member that causes condensation to occur faster inside the container body than on the inner surface of the container body when water vapor condenses inside the container body.

According to the container described in Patent Document 1, when the second member exposed to the outside of the container body is cooled by the outside air, the first part exposed to the inside of the container body is cooled through the third part and becomes colder than the air in the container body. At that time, since the first part becomes colder faster than the inside surface of the container body, when condensation occurs, condensation occurs first in the first part, and the humidity of the air inside the container body decreases, so condensation is less likely to occur on the inside surface of the container body (parts other than the first part), which becomes colder slower than the first part. Therefore, by taking measures such as storing the water generated by condensation in the first part in a water collection container, it is possible to avoid nearby objects getting wet and visibility through the window becoming poor.

Patent No. 7071770

The present invention is based on a technical concept different from that of the invention described in Patent Document 1 and proposes a means to reduce the inconvenience caused by condensation in the container of the flying object.

The present invention proposes a container provided with a flying object, comprising an airtight container body for containing an object, the container body being divided into a first region and a second region, a heat absorbing layer that covers the first region but does not cover the second region and is a layer that absorbs radiant heat from the sun with a higher absorption rate than the container body , a part of the container body being a window that transmits visible light, and a linear member extending from the first region located around the window to the window and having a higher thermal conductivity than the container body .

According to the container of the present invention, the first region covered with the heat absorbing layer absorbs more radiant heat from the sun than the second region not covered with the heat absorbing layer, and becomes hotter than the second region, so condensation is likely to occur in the relatively cool second region, but is unlikely to occur in the first region. In addition, the heat conductive portion transfers heat from the first region located around the window to the window, making the window hotter than the second region. As a result, by taking measures against condensation occurring in the second region, the inconvenience caused by condensation can be reduced.

FIG. 1 is a diagram showing an overall configuration of a flying object according to an embodiment. FIG. 2 is a diagram showing the appearance of a container according to an embodiment. FIG. 2 is a cross-sectional view of a container according to one embodiment. FIG. 2 is a cross-sectional view of a container according to one embodiment. FIG. 13 is a diagram showing a container according to a modified example. FIG. 1 shows a container according to a modified example. FIG. 1 shows a container according to a modified example.

[Embodiment]
1 is a diagram showing the overall configuration of a flying object 1 according to one embodiment of the present invention. The flying object 1 includes an air envelope 11, a sling 12, and a container 13.

The air bag 11 contains a gas that is lighter than air, such as helium gas, and creates buoyancy in the air.

The suspending rope 12 is a multiple-rod (four in the example shown in Figure 1) that serves to suspend the container 13 below the air bag 11.

Container 13 is a container that contains objects (which may include people) that are transported into the sky by the flight of flying object 1.

Figure 2 shows the appearance of the container 13. Figure 2(A) shows the container 13 as viewed from the front, and Figure 2(B) shows the container 13 as viewed from the back. Figure 3 shows a cross-sectional view of the container 13 cut along a horizontal plane at the position indicated by the dashed line in Figure 2(A) and viewed in the direction indicated by the arrow X in Figure 2(A). Figure 4 shows a cross-sectional view of the container 13 cut along a vertical plane at the position indicated by the dashed line in Figure 2(A) and viewed in the direction indicated by the arrow Y in Figure 2(A).

Note that in Figures 3 and 4, objects (which may include people) contained in the container 13 are not shown.

The container 13 includes an airtight container body 131 that contains the contents, a heat absorbing layer 132 that covers the first area A1 of the container body 131, a heat conductive portion 133 that extends from the first area A1 located around the window 1312 of the container body 131 to the window 1312, and a water collection container 134 that contains water generated by condensation in the second area A2 of the container body 131.

The container body 131 has a wall 1311, a window 1312, and a hatch 1313.

The wall 1311 is a curved plate-like component that is opaque to visible light and occupies most of the container body 131. The wall 1311 is generally divided into a cylindrical side wall portion, a hemispherical ceiling portion that covers the upper opening of the side wall portion, and a hemispherical bottom portion that covers the lower opening of the side wall portion. The side wall portion of the wall 1311 is provided with a hole that is covered by a window 1312. The ceiling portion of the wall 1311 is provided with a hole that is covered by a hatch 1313. Preferred materials for the wall 1311 include, for example, plastics such as fiber-reinforced plastic, light metals such as aluminum, and combinations thereof.

Window 1312 is a curved plate-like component that transmits visible light and is attached to wall 1311 so as to cover a hole provided in the side wall of wall 1311. Window 1312 is provided so that a person accommodated in the internal space of container body 131 can view the external space and so that an imaging device accommodated in the internal space of container body 131 can capture images of the external space. Preferred materials for window 1312 include, for example, transparent plastics such as polycarbonate.

Hatch 1313 is a curved, plate-like component that does not transmit visible light and is attached to wall 1311 so as to cover a hole in the ceiling of wall 1311. Hatch 1313 is attached to wall 1311 so as to be openable and closable by a mechanism such as a hinge. Hatch 1313 is normally closed, but is opened when inserting or removing contents from container body 131. Preferred materials for hatch 1313 include, for example, fiber-reinforced plastic, transparent plastic such as polycarbonate, light metal such as aluminum, and combinations thereof.

The container body 131 is divided into a first area A1 that is covered by the heat absorption layer 132 and a second area A2 that is not covered by the heat absorption layer 132. The first area A1 includes a portion of the wall 1311 and the entire area of the hatch 1313. The second area A2 includes a portion of the wall 1311 and the entire area of the window 1312.

The heat absorption layer 132 is a layer of a material that has a higher absorption rate of radiant heat from the sun than the container body 131. Therefore, when sunlight hits the container 13, the part of the wall 1311 and the hatch 1313 included in the first area A1 that are covered with the heat absorption layer 132 become hotter than the part of the wall 1311 and the window 1312 included in the second area A2 that are not covered with the heat absorption layer 132. In other words, in an environment where the container 13 is exposed to sunlight, the part of the wall 1311 and the window 1312 included in the second area A2 that are not covered with the heat absorption layer 132 become colder than the part of the wall 1311 and the hatch 1313 included in the first area A1 that are covered with the heat absorption layer 132.

The heat absorption layer 132 may be formed, for example, by applying paint with a high solar absorption rate to the outer surface of the first area A1 of the container body 131, or by attaching a film with a high solar absorption rate to the outer surface of the first area A1 of the container body 131.

The thermally conductive portion 133 is a linear member having a higher thermal conductivity than the container body 131, and is arranged to extend from the first area A1 located around the window 1312 to the window 1312. Preferred materials for the thermally conductive portion 133 include metals such as copper and aluminum.

As described above, in an environment where the container 13 is exposed to sunlight, the window 1312 is at a lower temperature than the first area A1 of the container body 131. The thermal conduction section 133 is a component that conducts heat from the first area A1 located around the window 1312 to the window 1312, thereby making the window 1312 hotter than the second area A2 of the wall 1311.

Therefore, in an environment where the container 13 is exposed to sunlight, the following relationship holds:
(Temperature of the second area A2 of the wall 1311) < (Temperature of the window 1312) < (Temperature of the first area A1)

As a result, if condensation occurs in the container body 131, it will occur in the second area A2 of the wall 1311, which is the coldest.

The water collection container 134 is a container located at the bottom inside the second area A2 of the wall 1311, and collects water that has condensed in the second area A2 of the wall 1311. That is, the water that has condensed flows down along the inner surface of the wall 1311 and flows into the water collection container 134 below. As a result, the water that has condensed does not wet the contents of the container 13.

According to the container 13 described above, condensation does not occur on the window 1312. Furthermore, according to the container 13 described above, water generated by condensation does not wet the contents of the container 13.

In addition, when manufacturing the container 13, the area of the first area A1 and the area of the second area A2 can be adjusted to adjust the temperature inside the container 13 when the flying object 1 is flying. Furthermore, among the contents contained in the container 13, by arranging the contents that do not like low temperatures near the first area A1 and the contents that do not like high temperatures near the second area A2, the risk of deterioration of the quality of the contents and the occurrence of malfunctions can be reduced.

[Modification]
The above-described container 13 may be modified in various ways within the scope of the technical concept of the present invention. Examples of modifications are shown below. Note that two or more of the following modifications may be appropriately combined.

(1) The appearance of the container 13 may be impaired due to the difference in appearance between the first region A1 of the container body 131, which is covered by the heat absorption layer 132, and the second region A2, which is not covered by the heat absorption layer 132. To solve this problem, the container 13 may be provided with a layer that covers at least a portion of the second region A2, has the same appearance to the human eye as the heat absorption layer 132, and has a lower absorption rate of radiant heat from the sun than the heat absorption layer 132.

Figure 5 is a diagram for explaining an example of this modified example. A logo mark "ABCDE FGHIJ" is drawn on the outer surface of the container 13 shown in Figure 5. The color of this logo mark is different from the color of the background. In the following, as an example, the color of the logo mark is blue and the color of the background is white.

The following four types of paint are used to manufacture this container 13.
WH is a white paint that has a high rate of absorbing radiant heat from the sun.
WL is a white paint that has a low absorption rate of radiant heat from the sun.
Blue paint with high absorption rate of radiant heat from the sun
BL paint is blue and has a low absorption rate of radiant heat from the sun.

Both paints WH and WL have low absorptivity across the entire visible light frequency range so that they appear the same white to humans. Here, "appearing the same to humans" does not necessarily mean that they are exactly the same, but includes cases where they are similar enough that they cannot be easily distinguished.

In addition, Paint WH and Paint WL have high absorptivity across the entire frequency range of ultraviolet light that is harmful to the human body. In other words, Paint WH and Paint WL have substantially the same distribution of light absorptivity across the frequency range of visible light and ultraviolet light.

On the other hand, Paint WH and Paint WL have different absorptivities across the infrared frequency band. Specifically, Paint WH has a high absorptivity across almost the entire infrared frequency band, while Paint WL has a low absorptivity across almost the entire infrared frequency band. As a result, Paint WH and Paint WL look the same white in sunlight and both block ultraviolet rays, but Paint WH becomes hotter than Paint WL.

In addition, paint BH and paint BL both have low absorptance in the blue frequency band and high absorptance in other frequency bands in the visible light frequency band so that they appear the same blue to humans. Here, "appearing the same to humans" does not necessarily mean that they are exactly the same, but includes cases where they are similar enough that they cannot be easily distinguished.

In addition, Paint BH and Paint BL have high absorptivity across the entire frequency range of ultraviolet light that is harmful to the human body. In other words, Paint BH and Paint BL have substantially the same distribution of light absorptivity across the frequency range of visible light and ultraviolet light.

On the other hand, Paint BH and Paint BL have different absorptivities across the infrared frequency band. Specifically, Paint WH has a high absorptivity across almost the entire infrared frequency band, while Paint WL has a low absorptivity across almost the entire infrared frequency band. As a result, Paint BH and Paint BL look the same blue in sunlight and both block ultraviolet rays, but Paint BH becomes hotter than Paint BL.

The absorption rate of radiant heat from the sun of the layers formed on the outer surface of the container body 131 using the four types of paint is highest for paint BH, followed by paint WH, paint BL, and paint WL.

In the container 13 according to this modification, the entire hatch 1313 and the background portion of the first area A1 of the wall 1311 are covered with a heat absorbing layer 132 formed by applying paint WH. In addition, the logo mark portion of the first area A1 of the wall 1311 is covered with a heat absorbing layer 132 formed by applying paint BH.

On the other hand, the background part of the second area A2 of the wall 1311 is covered with a layer formed by applying paint WL. Also, the logo mark part of the second area A2 of the wall 1311 is covered with a layer formed by applying paint BL.

Therefore, when the flying object 1 flies and the container 13 is cooled by the outside air, condensation first occurs in the background part of the second area A2 of the wall 1311, which is covered with the layer formed by applying the paint WL, which has the lowest rate of absorbing radiant heat from the sun. If the area where condensation occurs then expands, condensation occurs in the logo mark part of the second area A2 of the wall 1311, which is covered with the layer formed by applying the paint BL, which has the second lowest rate of absorbing radiant heat from the sun.

The logo mark portion of the second area A2 of the wall 1311 may be covered with a layer formed by applying paint BH instead of paint BL.

In the above example, the heat absorbing layer 132 and a layer that absorbs less radiant heat from the sun than the heat absorbing layer 132 are formed by applying paint that looks the same but has a different rate of absorption of radiant heat from the sun. Alternatively, the heat absorbing layer 132 and a layer that absorbs less radiant heat from the sun than the heat absorbing layer 132 may be formed by attaching a film that looks the same but has a different rate of absorption of radiant heat from the sun.

(2) The water collection vessel 134 may be a ballast tank that stores ballast water for adjusting the altitude of the flying object 1.

Figure 6 is a diagram for explaining an example of this modified example. The vessel 13 shown in Figure 6 has a ballast tank 135 at the bottom of the vessel body 131. The ballast tank 135 has a floor plate 1351 provided at the lower inside of the vessel body 131, a bottom 1352 of the wall 1311, and a lid 1353 that closes an outlet O provided at the bottom 1352, and stores ballast water in its internal space. The lid 1353 is normally closed, but opens, for example, in response to an operation by a person (crew member) accommodated in the vessel 13. When the lid 1353 is opened, the ballast water stored in the ballast tank 135 is discharged through the outlet O to the outside space.

An inlet I is provided on the floor plate 1351 at a position below the second area A2 of the wall 1311. Water generated by condensation in the second area A2 of the wall 1311 flows into the ballast tank 135 through the inlet I.

The lid 1353 and the mechanism for opening and closing the lid 1353 constitute a drainage mechanism for discharging water generated by condensation in the second area A2 of the wall 1311 to the outside space. The container 13 according to the above-described embodiment may be provided with a drainage mechanism for discharging the water stored in the water collection container 134 to the outside space.
(3) The container 13 may be provided with a water absorbing material that absorbs water generated by condensation in the second area A2 of the wall 1311. For example, by disposing a water absorbing material inside the water collection container 134, the water that flows into the water collection container 134 is absorbed by the water absorbing material. As a result, even if the container 13 sways significantly due to wind or the like while the flying object 1 is flying, the stored water will not overflow from the water collection container 134.

Preferable materials for the absorbent material include, for example, materials that physically absorb water, such as cotton or sponge, and materials that chemically absorb water, such as superabsorbent polymers.

(4) In the above-described embodiment, the wall 1311 of the container body 131 is divided into a first area A1 and a second area A2. In addition to this, or instead, the window 1312 may be divided into a first area A1 and a second area A2.

Figure 7 is a diagram for explaining an example of this modified example. In the container 13 shown in Figure 7, the window 1312 is divided into a first area A1 located in the center and a second area A2 located on the periphery.

A film that transmits almost all visible light and absorbs almost all ultraviolet and infrared light is attached to the first area A1 of the window 1312. On the other hand, a film that transmits almost all visible light and infrared light and absorbs almost all ultraviolet light is attached to the second area A2 of the window 1312. As a result, when the sun hits the container 13, the first area A1 of the window 1312 absorbs more radiant heat from the sun than the second area A2 of the window 1312 and becomes hotter. As a result, when the air in contact with the window 1312 from the inside is cooled and condensation occurs, condensation occurs in the low-temperature second area A2 and does not occur in the high-temperature first area A1.

In addition, instead of attaching a film to the window 1312, a transparent paint may be applied to the window 1312 to form the heat absorption layer 132 in the first area A1 and to form a layer having a lower absorption rate of radiant heat than the heat absorption layer 132 in the second area A2.

Furthermore, the application of film or paint to the window 1312 may be performed on the inside of the window 1312.

(5) In the above-described embodiment, the heat conductive portion 133 is arranged on the outer surface of the window 1312 (see Figures 3, 4, etc.). Alternatively, the heat conductive portion 133 may be arranged on the inner surface of the window 1312. The heat conductive portion 133 may also be arranged inside the window 1312.

(6) In the above-described embodiment, the container 13 is provided with the heat conductive portion 133, but the container 13 does not necessarily have to include the heat conductive portion 133. In other words, if the second area A2 of the wall 1311 becomes sufficiently colder than the window 1312 as the flying object 1 flies, and condensation does not occur on the window 1312 even without the heat conductive portion 133, the heat conductive portion 133 is not necessary.

(7) In the above-described embodiment, the type of flying object 1 is a gas balloon, but the type of flying object 1 is not limited to this. The flying object 1 may be a flying object that flies by buoyancy generated by wings, such as an airplane or helicopter, or may be a flying object other than a gas balloon that flies by buoyancy, such as a hot air balloon or an airship.

1... projectile, 11... air envelope, 12... sling, 13... container, 131... container body, 132... heat absorption layer, 133... heat conductive part, 134... water storage container, 135... ballast tank, 1311... wall, 1312... window, 1313... hatch, 1351... floor board, 1352... bottom, 1353... lid.

Claims (7)

A container equipped with a projectile,
An airtight container body for accommodating contents therein,
The container body is divided into a first region and a second region,
a heat absorbing layer that covers the first region and does not cover the second region and absorbs radiant heat from the sun at a higher absorptivity than the container body ;
a portion of the container body is a window that transmits visible light;
a linear member having a higher thermal conductivity than the container body, the linear member extending from the first region located around the window to the window;
container. The container of claim 1 , further comprising a layer covering at least a portion of the second region, the layer having the same human appearance as the heat absorbing layer and having a lower rate of absorption of radiant heat from the sun than the heat absorbing layer. 10. The container of claim 1, further comprising a water collection vessel for collecting water resulting from condensation in the second region. The container according to claim 3 , wherein the water collection container is a ballast tank that stores ballast water for adjusting the altitude of the flying object. The container according to claim 1 , further comprising a drainage mechanism that drains water generated by condensation in the second region to an external space of the container body. The container of claim 1 further comprising a water absorbent material for absorbing water resulting from condensation in the second region. A flying object comprising a container according to any one of claims 1 to 6 .