JPS6119796Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a seal structure for an airtight container having an opening/closing door, and particularly to a seal for a container in which there is a pressure difference between the inside and outside of the container.

Fig. 1 is a partial cross-sectional view showing a conventional seal structure of this type, and Fig. 2 is an enlarged view of part A thereof, in which 1 is an airtight container, 101 is the main body of the container, 101a is its opening, 102 is an opening/closing door, 103 is a packing material made of foamed resin or the like, and 104 is an adhesive.

When the container configured as described above is closed, the door 102 is closed by a tightening mechanism (not shown).
applies a pressing force in the direction of arrow A, and the packing material 103
It is configured to airtightly seal the inside of the container 1 by bringing the space between the door 102 and the door 102 into close contact, and is widely used as a sealing mechanism for the opening/closing door of an airtight container that requires simple airtight sealing.

However, if there is a large difference between the pressure inside the container 1 and the outside pressure, leakage may occur through the packing material 103 as shown by arrow A in FIG. 2, or leakage may occur through the contact surface as shown by arrow B. This will cause airtightness to be compromised. The same applies when the pressure inside the container 1 is lower than the outside pressure.

The following can be considered as prior art to solve this problem.

FIG. 3 is a partially enlarged sectional view of the prior art, showing the container 1.
This applies when the internal pressure is greater than the external pressure. In the figure, reference numeral 110 denotes a sealing member made of a flexible material such as rubber and formed into a thin plate shape. When the door 102 is closed, this opening 10
1a, and is configured so that a narrow gap 109 is formed between the circumferential surface and the inner surface of the opening 101a, and the surface to be sealed with the sealing member 110 (inner wall surface in this example) is flush with the inner surface of the opening 101a. has been done. The sealing member 110 is shaped like a frame to cover the gap 109 formed around the opening 101a, and is shaped so that its inner edge abuts against the closed door 102. It is glued.

When the door 102 of the container 1 having the sealing mechanism configured in this manner is closed, the gap 109 is covered from the inside with the sealing member 110, and the air pressure inside the container 1 is reduced.
It is pressed against the door 102 due to the pressure difference between the air pressure inside the gap 109 and the air pressure inside the gap 109 . Since this pressing strength is proportional to the difference in air pressure between the inside and outside, effective sealing can be achieved even when the difference in air pressure becomes large.

FIG. 4 is a partially enlarged cross-sectional view of another example of the prior art, showing a configuration applied when the external pressure is greater than the internal pressure, which functions in the same way as shown in FIG. 3 and has similar effects. is obtained.

However, these prior art techniques utilize the pressure difference between the inside and outside of the container to improve the hermetic sealing properties, but when the airtight container is heated and the sealing member is severely degraded by temperature, , good hermetic sealing properties cannot be maintained for a long time. This invention attempts to solve these deficiencies.

FIG. 5 is a partially enlarged cross-sectional view of an embodiment of this invention in which the external pressure is higher than the internal pressure and the temperature of the wall surface of the container and the door 102 is lower than that of the sealing member 110.
105 and 106 are heat insulating members, and 107 and 108 are heat radiating members each having fins 107a and 108a.
It is hermetically fixed to the container body 1 and the door 102 via 106. The seal member 110 is the heat dissipation member 107
and is configured to cover the gap 111 formed between the heat dissipating members 107 and 108,
It is pressed by the differential pressure between the external pressure and the internal pressure, and the gap 111 is hermetically sealed.

With this structure, the thermal insulation members 105,1
06 and heat dissipation members 107, 10
8 is cooled by external pressure, its temperature can be maintained at a temperature lower than the temperature of the vessel wall surface and lower than the allowable temperature limit of the sealing member 110.

FIG. 6 is a partially enlarged sectional view of still another embodiment of this invention, which is a modification of the embodiment shown in FIG. In this embodiment, when the door 102 is closed, the protruding portion of the seal member 110 bonded to the heat radiating member 107 is pressed against the heat radiating member 108 by internal pressure applied through the gap 109, thereby airtightly sealing.

In the above embodiment, the sealing member 110 is pasted with the adhesive 104, but it goes without saying that the present invention is not limited to this configuration.

An airtight container with such a sealing mechanism, for example, adsorbs moisture in the air onto an adsorbent, desorbs it by passing heated air through the adsorbent, and cools the heated air to condense the moisture to obtain water. It is used as a container or passageway for the adsorbent in the configured fresh water generation equipment.

As explained in detail above, this device is equipped with a sealing mechanism that airtightly seals the gap that is formed around the door of an airtight container having an opening/closing door when the door is closed. , the sealing member is disposed on either one of the heat radiating members fixed to the wall surface of the airtight container body and the door through the heat insulating member, and the sealing member is formed between these heat radiating members. It is constructed so that it is covered and pressed by the differential pressure between the internal pressure of the container and the outside air pressure to airtightly seal the space between the containers, so it goes without saying that the airtightness of the container can be significantly improved when the door is closed. However, even if the temperature of the wall surface of the airtight container and door exceeds the heat resistance temperature of the sealing member, the temperature will be equal to the temperature of the container wall surface because it is insulated by the heat insulating material and the heat radiating member is cooled by the outside air. Therefore, the sealing member can be protected from deterioration due to heat, and good hermetic sealing properties can be maintained for a long time.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the main parts showing the configuration of the sealing mechanism of a conventional airtight container with an opening/closing door.
FIGS. 3 and 4 are enlarged partial sectional views showing the prior art, and FIGS. 5 and 6 are partial enlarged sectional views of an embodiment of the invention, respectively. In the figure, 1 is an airtight container, 101 is a container body, 101a is an opening, 102 is a door, 104 is an adhesive, 105, 106 are thermal insulation members, 107, 10
8 is a heat dissipation member, 107a and 108a are fins, 1
09 and 111 are gaps, and 110 is a sealing member. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] An airtight container having an opening/closing door is equipped with a sealing mechanism that airtightly seals the space between the container and the container when the door is closed, and the sealing member is attached to the airtight container body and the door. The sealing member is disposed on either one of the heat radiating members fixed to the wall via a heat insulating member, and the sealing member covers the space between the heat radiating members and prevents internal pressure and external pressure of the container. 1. A sealing mechanism for an airtight container having an opening/closing door, characterized in that the door is pressed by a differential pressure between the door and the door to airtightly seal the gap.