Refrigeration – Refrigeration producer – Heat exchange between diverse function elements
Reexamination Certificate
2000-10-11
2001-10-23
Doerrler, William C. (Department: 3744)
Refrigeration
Refrigeration producer
Heat exchange between diverse function elements
Reexamination Certificate
active
06305188
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates in general to refrigerators, and more particularly, to a refrigerator having a refrigerant circulatory system capable of effectively removing a liquid refrigerant in a gaseous refrigerant transferred to a compressor from an evaporator.
2. Description of Related Art
Referring to
FIG. 4
, which is a schematic view of a refrigerant circulatory system of a conventional refrigerator, the refrigerant circulatory system of the refrigerator is comprised of a compressor
111
for compressing a refrigerant with high-temperature and high-pressure, a condenser
121
for condensing the gaseous refrigerant transferred from the compressor
111
into a liquid state, and an evaporator
131
for evaporating the liquid refrigerant to cause heat exchange between the evaporated refrigerant and an air in a storage
141
.
The refrigerant circulatory system is comprised of a capillary tube
104
installed between the condenser
121
and the evaporator
131
, being used as a passage of the liquid refrigerant flowing into the evaporator
131
from the condenser
121
, and a connection pipe
109
installed between the evaporator
131
and the compressor
111
, being used as a passage of the gaseous refrigerant flowing into the compressor
111
from the evaporator
131
.
A small amount of the liquid refrigerant which is not evaporated is mixed in the gaseous refrigerant of low temperature which is flowing into the compressor
111
after heat exchange through the evaporator
131
. The liquid refrigerant flowing into the compressor
111
makes a bad effect on the pumping operation of the compressor
111
for compressing the gaseous refrigerant into high-temperature and high-pressure state. Thus, to enhance the efficiency of the refrigerator, the liquid refrigerant in the gaseous refrigerant has to be removed.
To remove the liquid refrigerant in the gaseous refrigerant, the connection pipe
109
positioned between the compressor
111
and the evaporator
131
is contacted by soldering with the capillary tube
104
positioned between the condenser and the evaporator
131
, according to the conventional system. With this structure, heat is transferred from the capillary tube
104
through which the liquid refrigerant of high-temperature passes to the connection pipe
109
through which the gaseous refrigerant of low temperature passes, whereby the liquid refrigerant in the gaseous refrigerant in the connection pipe
109
is evaporated into a gaseous state.
As described above, since the connection pipe and the capillary tube are coupled by soldering in the conventional system, the longer the pipe and the tube, the larger soldering they need in coupling. Also, since lead for soldering is harmful to human's body, this would cause to destroy the concerned personnel's health
According to another conventional refrigerant circulatory system, a connection pipe positioned between an evaporator and a compressor has two holes spacedly formed thereon at a predetermined distance through which a capillary tube passes the inside of the connection tube.
However, this arrangement is still problematic in that the connection pipe is coupled by soldering with the capillary tube at the holes thereof, which bears the same problem as above.
SUMMARY OF THE INVENTION
Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a refrigerator having an improved refrigerant circulatory system wherein the coupling of the connection pipe and a capillary tube are improved, thereby effectively removing a liquid refrigerant in a gaseous refrigerant flowing into a compressor from an evaporator.
In order to achieve the above object, the present invention provides a refrigerator comprising a compressor, a condenser for condensing a refrigerant from the compressor into a liquid state, an evaporator for evaporating the liquid refrigerant into a gaseous state through a heat exchange with an air within a storage, a capillary tube positioned between the evaporator and the condenser, a connection pipe positioned between the evaporator and the connection pipe, and coupling members positioned between the evaporator and the connection pipe and positioned between the connection pipe and the compressor, for directing the capillary tube to the inside of the connection pipe.
The coupling members comprises a first coupling element functioning as a passage for the refrigerant, a second coupling element functioning as a passage for the capillary tube, and a connecting element for connecting the first coupling element and the second coupling element.
The first and second coupling elements of the coupling member are disposed in parallel with each other.
The first coupling element has a first end screw-coupled together with an inlet of the compressor or an outlet of the evaporator and a second end screw-coupled with the connection pipe.
The second coupling element has an open end sealingly coupled to the capillary tube and a closed end.
The first and second coupling elements of the coupling member are of a T-shape.
The first coupling element has a first end screw-coupled together with an inlet of the compressor or an outlet of the evaporator and a second end screw-coupled with the connection pipe.
The second coupling element has an open end sealingly coupled to the capillary tube.
REFERENCES:
patent: 2530648 (1950-11-01), Cahenzli et al.
patent: 2776552 (1957-01-01), Thomas
patent: 2785542 (1957-03-01), Thomas
patent: 3145545 (1964-08-01), Jaeger
patent: 3566615 (1971-03-01), Roeder
patent: 4147037 (1979-04-01), Gelbard et al.
patent: 5797277 (1998-08-01), Hong et al.
patent: 5819548 (1998-10-01), Clawson
Doerrler William C.
Larson & Taylor PLC
Samsung Electronics Co,. Ltd.
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