JPH06207773A - Refrigerator - Google Patents

Abstract

PURPOSE:To obtain efficient cooling by integrating a wire condenser, installed in a machine room, with another wire condenser installed in a duct. CONSTITUTION:A refrigerator is provided with a machine room 9, having a compressor 1 and a cooling fan 5, a duct 13, connected to and communicated with the machine room 9 while being provided with an air intake, through which cooling air is introduced by the cooling fan 5, and a wire condenser 15, in which part of fine wire, dissipating heat by ventilating through the cooling fan 5, is cut under a condition that mechanical connection is being kept and one of cut fine wire is laminated and received in the machine room 9 while the other part is received in the duct 13. In this case, part of fine wire of the wire condenser 15 is cut and is formed so as to have a flat plate section and a laminated section under a condition that part of the fine wire is cut and kept in integrated condition and the flat plate section is installed in the duct 13 while the laminated section is installed in the machine room 9 whereby the machine room 9 is utilized effectively and the heat transfer area of the condenser is increased. According to this method, efficient cooling can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator capable of efficiently cooling a wire condenser.

[0002]

2. Description of the Related Art In recent years, with the increase in size of refrigerators, wire capacitors have a structure in which they are forcibly cooled by being placed in a duct in which cooling air is forced to flow by a fan. A specific example is shown in FIG. . As shown in the figure, a compressor 71 and an evaporating dish 72 are arranged in a machine room 70 at the lower rear part of the refrigerator main body, and a duct 73 is provided at the bottom part of the refrigerator connected and communicated with the machine room 70. It has 74. A wire capacitor 75 is installed in the duct 73. The flow of air in the machine room 70 and the duct 73 will be described with reference to the refrigerator bottom sectional view of FIG. The air taken in from the intake 74 at the lower part of the front of the refrigerator by the cooling fan 76 in the machine room 70 is the duct 7 at the bottom of the refrigerator.
The wire condenser 75 installed in 3 is cooled. It is sucked into the cooling fan 76 in the machine room through the machine room air inlet 77 between the duct 73 and the machine room 70. Further, the air from the cooling fan 76 passes through the compressor 71 and the evaporation tray 72, and is exhausted to the outside of the refrigerator from the exhaust port 81 at the rear part of the machine chamber 70.

FIG. 10 shows a refrigerating cycle of a refrigerator. The high-temperature, high-pressure refrigerant discharged from the compressor 71 is the evaporation pipe 91.
And enters the wire capacitor 75. Since the refrigerant has a higher temperature than the condensing temperature in the overheating region, it enters from the rear, which is under the cooling wind, and exits from the front of the refrigerator, which is above the cooling wind. After that, it passes through the clean pipe 92 and the dryer 93 and then passes through the capillary tube 94 to expand and become a low temperature and low pressure. The evaporator 95 removes heat from the air in the refrigerator, and the compressor 7
Return to 1.

FIG. 11 shows a large refrigerator (550 liters).
It is a block diagram of the machine room of. As shown in the figure, the heat is radiated from the refrigeration cycle mainly through the side heat radiating pipes, but the amount of heat radiated from the side pipes alone is insufficient. Heat is radiated by the auxiliary heat exchanger 101 of the condenser. There is also an example in which a large laminated wire capacitor is installed in the machine room to serve as the main radiator.

In recent years, the size of refrigerators has increased, and the refrigerating capacity of compressors used therein has increased accordingly. Therefore, the required heat radiation amount of the compressor 71 is also increasing. When the required heat radiation amount was small, the heat radiation amount of the compressor 71 was in between due to natural convection and heat radiation by radiation, but the heat radiation amount became large, and the auxiliary heat exchanger 101 for cooling the compressor was provided as a laminated wire capacitor in the machine chamber 70. It is installed and forcedly cooled by the cooling fan 76.

However, when installing the wire capacitor in the machine room and the duct, the pipes must be welded after the installation in order to install them separately. Further, it is very difficult to provide the main heat exchanger for condensing the refrigerant and the auxiliary heat exchanger for cooling the compressor as one heat exchanger in the duct because the temperatures of the refrigerants flowing in the two pipes are greatly different. There was a problem.

[0007]

As described above, the conventional refrigerator does not effectively use the machine room. In addition, when installing the wire condenser in the machine room and duct, it is necessary to weld the pipe after the installation, and due to the large temperature difference, one heat exchanger may be provided for refrigerant condensation and compressor cooling. There was a drawback that I could not.

Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks, enable the wire capacitor to be installed by effectively utilizing the machine room, and integrate the wire capacitor installed in the machine room and the duct.

[0009]

In order to achieve the above object, the present invention provides a machine room having a compressor and a cooling fan,
A duct provided with an inlet for connecting the machine room with the cooling air and communicating with the machine room;
Refrigerant compressed by the compressor flows in a wavy shape and is attached to a pipe bent by the cooling fan to radiate heat, so that a portion of the thin wire is cut while maintaining mechanical connection, and one of the cut pieces is laminated. A refrigerator comprising a wire capacitor having the other housed in the duct in the machine room.

[0010]

With this structure, the thin wire of the wire capacitor is partially cut to form the flat plate portion and the laminated portion, and the flat plate portion is placed in the duct. By installing in the machine room, the machine room is effectively used and the heat transfer area is increased.

[0011]

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a refrigerator according to an embodiment of the present invention. As shown in the figure, a machine room 9 having a compressor 1, an evaporating dish 3 and a cooling fan 5 and having an exhaust port 7.
The machine room 9, the duct 13 having the cooling fan 5 connected to and communicating with the machine room 9, and the wire condenser 15. FIG. 2 is a refrigeration cycle diagram of the present invention. As shown in the figure, the refrigeration cycle of the present invention includes a compressor 1, an evaporation pipe 19, and a wire condenser 1 which is a condenser.
5, a clean pipe 23, a dryer 25, a capillary tube 27, and an evaporator 29. The wire capacitor 15 is composed of a pipe 31 and a thin wire 33.

The operation of the wire condenser 1 will be described with reference to the above-mentioned structure. The refrigerant compressed by the compressor 1 and having a high temperature and a high pressure passes through the evaporation pipe 19 provided in the evaporation tray 3.
5, It flows into the clean pipe 23 and radiates heat to be condensed. The clean pipe 23 is provided in a portion between the door 35 where dew is generated due to a temperature difference between the inside and outside of the refrigerator, and the high temperature refrigerant flowing in the pipe 23 prevents dew condensation. is doing. Then, the heat-dissipated refrigerant passes through the capillary tube 27 and is decompressed. The refrigerant, which has been reduced in pressure to have a low temperature and a low pressure, flows into the evaporator 29 and takes heat to be evaporated. At this time, frost is formed on the evaporator 29, and defrost water generated when this is defrosted by a heater (not shown) is stored in the evaporation tray 3. Since the evaporation pipe 19 passes through the evaporation tray 3, the accumulated defrost water is evaporated. Dryer 2
5 is used to remove water remaining in the refrigeration cycle after manufacturing.

FIG. 4 is a diagram showing the wire capacitor 15 used in the refrigerator of the present invention. As shown in the drawing, a part of the thin wire 33 of the wire capacitor 15 is cut to have a three-dimensionally laminated wire capacitor laminated portion 15a and a flat wire capacitor flat plate portion 15b.

FIG. 5 is a developed view of the wire capacitor 15 described above. As shown in the figure, the wire capacitor 15
Is formed by bending a single pipe 31 in a wave shape and welding a thin wire 33 as an enlarged heat transfer surface. And this thin wire 33 is A-
It cut | disconnects leaving a mechanical connection part on the A line, and it divided | segmented into two by the AA line, and bent one or more pipes 31 into a laminated shape, and made the other flat plate shape. By doing so, the three-dimensional structure as shown in FIG. 4 is obtained. Pipe 31
The thin line 33 is thinned out because the thin line 33 is difficult to bend when the thin line 33 is welded. This is because the thin wire 33 is thinned out at the time of manufacturing the wire capacitor 15 by pressing the pipe 31 and fixing the pipe 31.
Can be welded with 3.

FIG. 3 is a diagram showing the flow of air in the machine room and the duct in which the wire capacitors described in FIGS. 4 and 5 are provided. As shown in the figure, the air sucked by the cooling fan 5 in the machine room 9 from the suction port 11 at the lower part of the front surface of the refrigerator cools the wire condenser flat plate portion 15a installed in the duct 13 at the bottom portion of the refrigerator. Then, after entering the machine room 9 from the duct 13 through the machine room air inlet 17, the laminated wire capacitor laminated portion 15b is cooled and then sucked by the cooling fan 5. Further, the air from the cooling fan 5 passes through the compressor 1 and the evaporation tray 3, and is exhausted to the outside of the refrigerator from the exhaust port 7 at the rear of the machine chamber 9.

The wire capacitor 15 described above is the compressor 1
This is for use in a refrigeration cycle when the required heat radiation amount of can be supplemented. Next, another embodiment of the present invention will be described. In this embodiment, the wire condenser 45 used in the refrigeration cycle when the required heat radiation amount of the compressor 1 cannot be supplemented will be described. FIG. 6 is a configuration diagram of a wire capacitor according to another embodiment of the present invention. As shown in the figure, the pipe 47 of the machine room air inlet 17 which is the boundary between the machine room 9 and the duct 13 is cut, and only the thin wire 49 is connected. And the first
In the same manner as in the above embodiment, one of the pipes 47 is bent multiple times to be laminated and the other is kept flat. Laminated portion 45a which is an auxiliary heat exchanger and flat plate portion 45b which is a main heat exchanger
Similarly to the first embodiment, the former is installed in the machine room 9 and the latter is installed in the duct 13.

FIG. 7 is a refrigeration cycle diagram using a wire capacitor according to another embodiment of the present invention. As shown in the figure, it comprises a compressor 1, an evaporation pipe 19, a wire capacitor laminated portion 45a, a wire capacitor flat plate portion 45b, a clean pipe 23, a dryer 25, a capillary tube 27, and an evaporator 29. First using the above configuration
Explaining the part different from that of the embodiment, the refrigerant having a high temperature and high pressure by the compressor 1 radiates heat through the evaporation pipe 19 and further radiates heat through the wire condenser laminated portion 45a which is an auxiliary heat exchanger. Return to compressor 1. This is because the compressor 1 normally dissipates heat by blowing air with the cooling fan 5, but this alone cannot dissipate heat.
Refrigerant radiated by the evaporation pipe 19 and the wire capacitor laminated portion 45a is returned to the oil cooler pipe (not shown) in the compressor 1. By doing so, the refrigerant flowing into the wire condenser 45a is lower than the temperature of the compressor 1 and thus absorbs the heat of the compressor 1. That is, the compressor 1 radiates heat.

The laminated portion 45a which is the auxiliary heat exchanger of the wire condenser and the flat plate portion 45b which is the main heat exchanger are
Although they are integrated by mechanical connection, since the connecting portion is only the thin wire 49, the degree of thermal coupling is low and even if there is a temperature difference between the refrigerant flowing through the laminated portion 45a and the flat plate portion 45, there is little effect.

Next, the installation of the wire capacitor 15 will be described. As a mounting portion for the wire condenser 15, a hook portion for fixing the wire condenser is provided on the duct 13 installed on the bottom of the refrigerator, and the pipe 31 is fitted therein. The method is to install the duct 13 together with the wire condenser 15 on the bottom of the refrigerator, and further attach the compressor stand to the refrigerator cabinet. In addition, a method of fixing the wire condenser 15 to the bottom of the refrigerator, a method of fixing it with the duct 13 and the compressor stand, and a method of fixing it with the refrigerator bottom and the compressor stand are also conceivable. Further, in order to avoid the vibration transmitted from the compressor 1 through the pipe 31, it is also possible to fix the vibration with rubber feet or the like that absorb the vibration. The above-described installation method has been described using the reference numerals of the first embodiment, but the same applies to the second embodiment. That is, in both the first embodiment and the second embodiment, the wire condensers 15 and 45 installed in the machine room 9 and the duct 13 are integrated, so the machine room air inlet 1
It is not necessary to provide a hooked portion near 7.

[0021]

As described above, in the refrigerator of the present invention, the capacity can be improved by effectively utilizing the machine room,
Since the machine room and the wire capacitor leading to the duct are integrated, there is no need to weld the pipe after installation, and the hooked portion can be reduced compared to the conventional case.

[Brief description of drawings]

FIG. 1 is a perspective view of a refrigerator according to an exemplary embodiment of the present invention.

FIG. 2 is a refrigeration cycle diagram according to an embodiment of the present invention.

FIG. 3 is a top view of a machine room according to an embodiment of the present invention.

FIG. 4 is a diagram showing the wire capacitor shown in FIG. 1.

5 is a view showing the wire capacitor shown in FIG. 4 in a flat plate shape.

FIG. 6 is a configuration diagram of a wire capacitor showing another embodiment of the present invention.

FIG. 7 is a refrigeration cycle diagram according to another embodiment of the present invention.

FIG. 8 is a perspective view of a conventional wire capacitor.

FIG. 9 is a top view of a machine room of a conventional refrigerator.

FIG. 10 is a conventional refrigeration cycle diagram.

FIG. 11 is a structural diagram of a machine room of a conventional refrigerator.

[Explanation of symbols]

1 ... Compressor, 3 ... Evaporating dish, 5 ... Cooling fan, 7 ... Exhaust port, 9 ... Machine room, 11 ... Suction port, 13 ... Duct, 1
5 ... Wire condenser, 17 ... Machine room air inlet, 19
... Evaporation pipe, 23 ... Clean pipe, 25 ... Dryer, 27 ... Capillary tube, 29 ... Evaporator, 31 ...
Pipe, 33 ... Fine wire, 45 ... Wire capacitor, 47 ...
Pipe, 49 ... fine wire.

Claims (2)

[Claims] 1. A machine room having a compressor and a cooling fan, a duct provided with an inlet for connecting cooling air to the machine room and taking in cooling air by the cooling fan, and a refrigerant compressed by the compressor flows. A part of the thin wire that radiates heat by blowing with the cooling fan attached to the wavy bent pipe is cut in a state where mechanical connection is maintained, and one of the cut ones is laminated into the machine room and the other is cut. A refrigerator comprising a wire capacitor housed in the duct. 2. The refrigerator according to claim 1, wherein the wire condenser has two independent coolant flow paths.