Refrigeration – Processes – Circulating external gas
Reexamination Certificate
2000-03-30
2001-12-25
Doerrler, William (Department: 3673)
Refrigeration
Processes
Circulating external gas
C062S273000, C062S283000
Reexamination Certificate
active
06332326
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a system and a method for eliminating the dampness in the incoming atmosphere(air) which flows from outside into the underground or semi-underground storage facilities in which all kinds of food, pharmacies, goods, etc. are in custody under the condition of the constant temperature and humidity for a long term period. Especially, the present invention relates to a system and a method for eliminating the dampness or moisture in the incoming atmosphere with high temperature and humidity which flows from outside into the underground storage facilities by condensing the moisture into water-drops.
2. Description of the Background Art
The typical underground facilities are constructed into or under the earth in order to use them as storage spaces for goods or as living spaces for people. In order to use the underground facilities efficiently, it is very important to maintain the atmosphere circumstance of the underground facilities appropriately to its usage. Contrary to the on-ground, the underground has the constant temperature circumstance of about 10~15 centigrade degree. Generally, the storage facilities demanded the constant temperature circumstance to be constructed underground. Therefore, at least one of the wall
1
a
, the ceiling
1
b
and, the bottom
1
c
of the underground facilities is under the earth(ground)
99
, as shown in the FIG.
1
. The temperature of the ground or underground exerts an important effect on the temperature of the inside space of the underground facilities. If the underground facilities are isolated from the outside circumstance, then the temperature and the humidity does not change. However, the outside atmosphere generally flows into the underground facilities according to loading and unloading of the stored goods. If the outside atmosphere is low in temperature and humidity, then the incoming atmosphere does not influence the inside atmosphere of the underground facilities. If the outside atmosphere is high in humidity, then the inside atmosphere of the underground facilities could have humidity problems. For example, if the outside atmosphere is in higher temperature and humidity than those of the inside atmosphere of the underground facilities, the humidity inside the underground facilities increases in case the air flows inside from the outside. The incoming atmosphere of high temperature and humidity which flows from the above-ground into the underground facilities is in contact with the inside wall of the underground facilities and the stored goods therein. The temperature of the atmosphere which came from the outside falls as it contacts the underground circumstances while having the outside humidity of high ratio. Generally, the temperature of the underground facilities is lower than the due point of the incoming atmosphere. Therefore, the dampness of the incoming atmosphere condenses at the surface of the inside wall of the underground facilities and the stored goods therein. As a result, it is easy for the moisture of the incoming atmosphere to condense at the surface of the stored goods and surface of the wall, the ceiling and the bottom of the underground facilities. Then, the underground facilities cannot be used as the storage facilities. Especially, dew grows at the surface of the wall and the ceiling of the underground facilities as the temperature of the wall is lower than that of the inside atmosphere of the underground facilities.
In order to overcome the above mentioned problem, a heat shielding material
2
is applied on the inside surface of the underground facilities, that is, the wall
1
a
, the ceiling
1
b
and, the bottom
1
c
, as shown in FIG.
2
. To do this, the lower temperature of the wall
1
a
contacting the earth
99
should be isolated from the inside atmosphere
11
of the underground facilities. Generally, the heat isolation material has two types, one is the panel type and the other is the spray type. When the panel type is applied, the atmosphere of the underground facilities can still contact the wall through the gap of the panels and the dew drops occur. The dewdrops may cause many unexpected problems. When the spray type is applied, no such dew occurs on the surface of the heat isolation material. However, the humidity problem inside the underground facilities is not eliminated basically. Therefore, in order to maintain the profit humidity condition for storing goods, de-humidification facilities are needed.
The typical conventional underground facilities applying the panel type heat isolation material is mentioned below in detail. As shown in
FIG. 3
, an heat insulation layer
2
is formed by tiling the panel type heat insulation materials on the inside surface of the wall
1
a
of underground facilities. Generally, it is hard to plaster or paint on the surface of the heat insulation layer
2
. Therefore, an inside wall
3
is constructed inside the underground facilities apart from the surface of the heat insulation layer
2
with certain a distance. As a result, a buffing space
4
is formed between the inside surface of the wall
1
of the underground facilities and the inside wall
3
. In this case, the condensation occurs easily in the buffering space
4
, especially, between the surface of the wall
1
a
and heat insulating layer
2
. In order to treat the dewdrops resulting from the condensation, an water-draining trench
5
is formed facilities at the bottom of the buffing space
4
by constructing an water-proof groove
6
defining boundary between the buffering space
4
and the room of the underground. Furthermore, a ventilation window
11
is formed on the inside wall
3
in order to reduce the degree of humidity at the buffering space
4
. However, the root cause of the high humidity or the over humidity in the underground facilities is not solved. Therefore, an additional facilities for dehumidification are needed. Generally, a dehumidifier and an air-conditioner are used for eliminating the moisture in the outside atmosphere which flows into the room of the underground facilities. However, installing these dehumidification facilities and maintaining these above mentioned facilities are very expensive.
SUMMARY OF THE INVENTION
One object of the present invention is to provide an underground facilities having a dehumidification system and a method for dehumidificating the room atmosphere in the underground facilities. Another object is to provide a dehumidification system using an active condensation inducing device in the underground facilities and a method for dehumidification thereby. Yet another object is to provide an underground facility maintaining its room humidity to be in a lowered state and a method for maintaining the room humidity to be in a lowered state which is low enough to prevent the condensation problem from occurring on the goods in the storage facilities.
In order to achieve these objects, the present invention suggests an underground facility having a dehumidification system comprising an inside wall departing from a wall of the underground facility towards the inside area with a distance, a buffering space formed between the wall and the inside wall so that the inside wall divides the buffering space and a room of the underground facility and a ventilation means by which air is circulated between the room and the buffering space. Also, the present invention suggests a method for dehumidification in the underground facility comprising steps of dividing the inside space of the underground facility into two parts by constructing an inside wall near the wall so that one space formed between the inside wall and the wall is buffering space and the other space is a room space of the underground facility, flowing the air of the room space into the buffer space having the lower temperature than the room space so that the moisture in the inflow air is eliminated by condensation and exhausting the being dry air in the buffer space back into the room space of the underground facility.
R
Birch & Stewart Kolasch & Birch, LLP
Doerrler William
Himssen Esco Co., Ltd.
Shulman Mark
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