KR20030060696A - Condenser for refrigerator - Google Patents

Abstract

PURPOSE: A condenser for a refrigerator is provided to improve cooling efficiency and to prevent generation of turbulence in a tail end of a refrigerant tube. CONSTITUTION: A condenser comprises an oval refrigerant tube(30) manufactured with single wall steel tube; and a plurality of independent radiating fins(10) inserted and joined to the refrigerant tube. The refrigerant tube is repeatedly bent to form a plurality of refrigerant tube rows after the independent radiating fins are inserted and attached thereto. The refrigerant tube rows are arranged zigzag to form angle of 30-40 deg. for a side view. A major axis of the oval refrigerant tube is placed in flowing direction of air. Oval holes are eccentrically bored on the radiating fins. The radiating fins are fixed on a jig to pop in and out zigzag. The oval refrigerant tube is forcibly inserted to the holes of the radiating fins so that the radiating fins and the oval refrigerant tube are joined to each other.

Description

Condenser for refrigerator {Condenser for refrigerator}

The present invention relates to a condenser for a refrigerator, and more particularly, a plurality of independent heat dissipation fins 10 are fitted to an elliptical refrigerant tube 30 made of a single winding steel pipe, and then a plurality of cooling fin rows are formed by bending a refrigerant tube in multiple stages. After that, a plurality of cooling fins are arranged in a zigzag pattern with the cooling fins of the other cooling fins so as to be in contact with the air, and formed to have a constant angle when viewed from the side. It relates to a condenser for refrigerators installed to coincide.

Generally, a refrigerator is a refrigeration apparatus that lowers the temperature in the refrigerator and repeats the refrigeration cycle of compressing, condensing, expanding, and evaporating the refrigerant so that food can be kept fresh for a long time. It is a generalized home appliance.

The cooling device installed in the refrigerator generates cold air by performing heat exchange through a phase change of the refrigerant circulating along the refrigerant pipe. Such a cooling device is usually configured by connecting a compressor, a condenser, a refrigerant expansion device, and an evaporator in sequence by a refrigerant pipe.

The basic configuration of the refrigerator will be described below. The refrigerator includes a compressor for heating and boosting a low temperature and low pressure refrigerant gas at a high temperature and a high pressure, a condenser for condensing the high temperature and high pressure refrigerant gas flowing from the compressor, and a high temperature and high pressure refrigerant gas at a low temperature and low pressure liquid refrigerant. And a capillary tube to be converted into a low temperature, low pressure liquid refrigerant and an evaporator which generates cold air by evaporating the low temperature and low pressure gas refrigerant.

Therefore, the cold air of the refrigerator compartment changed to a higher temperature than the initial supply temperature by heat exchange with the refrigerated food stored in the refrigerator compartment partitions the freezer compartment and the refrigerator compartment by the suction power of the blower fan installed at the rear of the freezer compartment and natural convection. The suction is forced into the evaporator side through the barrier, and the cold air in the refrigerating chamber is heat exchanged to low temperature while passing through the evaporator by the continuous rotation of the blowing fan.

The cold heat exchanged in this way is directly transferred to the freezer and the refrigerating chamber from the direct cooling refrigerator, and the intercooled refrigerator is transferred to the inside of the freezer compartment by a blowing fan, and the inside of the refrigerating chamber through the cold compartment duct formed at the rear of the refrigerating compartment. Forced blowing to lower the freezer compartment and the refrigerating compartment.

The cycle for lowering the inside of the refrigerator is continued until the inside of the refrigerator reaches the set temperature, and when the inside of the refrigerator reaches the set temperature, the refrigerator temporarily stops operating and the inside of the refrigerator falls below the set temperature. It prevents overcooling and wasted power.

On the other hand, the condenser is installed in the machine room provided in the lower part of the refrigerator to dissipate the heat of condensation by natural cooling or forced cooling. The conventional condenser has a thin wire connected to a straight steel pipe through which refrigerant flows at regular intervals. Spot welding was carried out, and the sheet itself was continuously bent in multiple stages to a size that can be installed in a refrigerator to form a hexahedral shape as a whole.

However, the condenser as described above requires a lot of manual work partly in the manufacturing process, so the efficiency in the process is low, and the manufacturing time is long, and the manufacturing cost of the condenser may increase due to the decrease in productivity. In addition, the most important heat dissipation surface area of the condenser caused a decrease in performance, and in order to solve this problem, there were various problems such as installing an additional component cluster pipe or other work added to the assembly process.

The technical problem to be achieved in the present invention is a condenser for a refrigerator, the conventional condenser spot welds a thin wire at regular intervals on a straight steel pipe flowing refrigerant, and repeats itself repeatedly in a size that can be installed inside the refrigerator Although it was bent to form a hexahedron as a whole, in order to improve the heat dissipation effect of the condenser, a plurality of independent heat dissipation fins were attached to the refrigerant pipe, the refrigerant pipe was banded, and these were arranged in a zig-zag to allow the air to pass through the condenser to the refrigerant pipe and the cooling fin. Refrigerator that improves the cooling efficiency by making contact with and improve the cooling efficiency, and the direction of the long axis of the elliptical refrigerant pipe coincides with the flow direction of the air to prevent the formation of turbulent flow in the rear of the refrigerant pipe to prevent the formation of the cooling shadow area To provide a condenser.

1 is a perspective view showing the structure of a conventional condenser for a refrigerator.

2 is a perspective view showing the structure of a machine room of a refrigerator.

3 is a cross-sectional view illustrating the configuration of a refrigerator cooler.

Figure 4 is a working state diagram showing an embodiment of the coupling process of the heat radiation fin and the refrigerant pipe of the condenser for a refrigerator of the present invention.

Figure 5 is a working state diagram showing an embodiment of the arrangement process of the heat radiation fin of the condenser for refrigerator of the present invention.

Figure 6 is a working state diagram showing the completion state of the arrangement process of the heat radiation fin of the condenser for refrigerator of the present invention.

7 is a cross-sectional view illustrating air flow around an elliptical refrigerant tube of a condenser for a refrigerator of the present invention.

8 is a working state diagram showing a bending process of the refrigerant pipe coupled with the heat radiation fin of the condenser for a refrigerator of the present invention.

9 is a state diagram showing a state in which a fixing plate is attached to fix the bent refrigerant pipe of the condenser for refrigerator of the present invention.

10 is a perspective view showing a state after the heat radiation fins of the condenser for refrigerator of the present invention are arranged.

※ Explanation of drawing code

10. Heat sink fins 20. Oval hall

30. Elliptical refrigerant tube Fixed plate

50. Refrigerant line 60. Wire cooling fins

70.Fridge body 80. Freezer

90. Cold storage room 100. Cold Supply Euro

110. Cold Return Euro 120. Cold air blower

130. Evaporator 140. machine room

150. Compressor 160. Cooling fan

170. Condenser

Accordingly, an object of the present invention is to provide a condenser for a refrigerator comprising an elliptical refrigerant pipe (30) made of a single winding steel pipe and a plurality of independent heat dissipation fins (10) inserted into and coupled to the refrigerant pipe. .

The elliptical refrigerant pipe is inserted into a plurality of independent heat dissipation fins 10, and then bent in multiple stages to form a plurality of refrigerant tube trains, and the refrigerant tube trains formed by the multi-stage bending are arranged in a zigzag and viewed from the side of 30 to 40 °. It is characterized by forming an angle.

In addition, the elliptical refrigerant pipe 30 is bent in multiple stages to form a refrigerant pipe array, the direction of the long axis of the elliptical refrigerant pipe is characterized in that the flow direction of the air.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view showing the structure of a conventional condenser for a refrigerator. As shown in the figure, the conventional condenser is bent several times to form a plurality of layers of the refrigerant pipe 50 is layered again to be layered to form a hexahedral shape as a whole. In addition, a plurality of wire cooling fins 60 are coupled to the outer surface of the bent refrigerant tube so as to widen the heat dissipation area.

The conventional condenser condenses the refrigerant gas compressed by the compressor into a liquid refrigerant, and the heat of the refrigerant flows through the refrigerant tube 50 where the high temperature and high pressure refrigerant gas introduced into the inlet flows through the bending tube. Heat is transferred to the wire cooling fins 60 to exchange heat with external air around the condenser. That is, the refrigerant inside is condensed into a liquid state while being cooled. At this time, the plurality of wire cooling fins 60 coupled to the outer surface of the refrigerant pipe serves to widen the heat exchange area with the external air.

However, the conventional condenser constructed as described above is welded with a plurality of wire cooling fins 60 in the manufacturing process and attached to the outer surface of the refrigerant pipe, so that the work process for manufacturing the condenser is complicated and difficult, and the manufacturing cost is high. have.

In addition, the conventional condenser has a problem that the heat exchange efficiency is low because the heat of the refrigerant is transferred to the wire cooling fins 60 coupled to the outer surface of the refrigerant tube again the heat of the refrigerant transferred to the outer surface of the refrigerant tube. In other words, the conventional condenser exchanges heat with the outside air after being heated by wire cooling fins which substantially expands the heat exchange area of the condenser, although the heat inside the heat exchange partly with the outside air contacting the outer surface of the refrigerant pipe. Since the heat dissipation area is small wire cooling fin has a problem of low heat exchange efficiency.

2 is a perspective view showing the structure of a machine room of a refrigerator. As shown in the figure, the machine chamber is provided with a compressor 150, a condenser 170, and a cooling fan 160 for cooling them together with the evaporator 130 described above.

A compressor 150 for compressing the refrigerant at a high temperature and high pressure is installed at one side of the machine room, and a condenser 170 for condensing the refrigerant compressed at the compressor is installed at the other side. At this time, the compressor and the condenser are interconnected through the refrigerant pipe. In addition, an inlet and an outlet through which air is circulated are formed in the rear of the machine room to cool the heat generated from the compressor and the condenser, and a cooling fan is installed between the compressor and the condenser to forcibly blow air inside the machine room.

3 is a cutaway view showing the configuration of a refrigerator cooler. As shown in the figure, a storage compartment in which food is stored is formed in the interior of the main body 70 of the refrigerator. The storage compartment of the upper and lower spaces is partitioned by an intermediate wall so that the upper portion forms the freezing chamber 80 and the lower portion is The refrigerating chamber 90 is achieved.

In addition, an evaporator 130 for generating cold air is accommodated and installed in the wall of the rear side of the freezer compartment, and a cold air supply passage 100 for guiding the cold air generated in the evaporator to the freezer compartment and the refrigerating compartment is formed at the upper and lower portions of the evaporator. The intermediate wall is provided with a cold air return passage 110 so that the cold air in the freezer compartment and the refrigerating compartment can be returned to the evaporator. On the other hand, a cold air blowing fan 120 for forcibly blowing the cold air generated in the evaporator to the freezer compartment and the refrigerating compartment is installed on one side of the cold air supply passage.

Figure 4 is a working state diagram showing an embodiment of the coupling process of the heat radiation fin 10 and the elliptical refrigerant pipe 30 of the condenser for a refrigerator of the present invention. As shown in the figure, the elliptical hole 20 of the heat dissipation fin is deflected and perforated, and after fixing the heat dissipation fins in a jig-zag to the jig for each fin section forming each cooling fin row in the coolant tube, the heat dissipation fin of the elliptical refrigerant tube Press into the hole of the heat sink and combine the elliptical refrigerant pipe.

Figure 5 is a working state diagram showing an embodiment of the arrangement process of the heat radiation fin of the condenser for refrigerator of the present invention. As shown in the figure, the heat dissipation fins 10 are arranged by bending the elliptical refrigerant pipe 30 coupled with the heat dissipation fins and pressing down the protruding cooling fins.

Figure 6 is a working state diagram showing the completion state of the arrangement process of the heat radiation fin of the condenser for refrigerator of the present invention. As shown in this figure, the radiating fins 10 are arranged in a row by pressing down the protruding cooling fins. Through the above process, the refrigerant pipes are arranged in a zigzag and form an angle of 30 to 40 ° from the side so as to be in contact with the air.

7 is a cross-sectional view illustrating air flow around an elliptical refrigerant tube of a condenser for a refrigerator of the present invention. As shown in the figure, since the elliptical refrigerant pipe 30 is formed in an elliptical shape, the air flows through the elliptical refrigerant pipe, so that the streamlined flow causes turbulence at the rear end of the coolant pipe so that the air does not flow and is cooled. It is possible to prevent the formation of shadowed areas.

8 is a working state diagram showing a bending process of the refrigerant pipe coupled with the heat radiation fin of the condenser for a refrigerator of the present invention. As shown in the figure, after fixing the heat radiating fins 10 to the jig jagged jig for each fin section forming each cooling fin heat in the refrigerant pipe, the elliptical refrigerant pipe 30 is pressed into the hole 20 of the heat radiating fins to radiate fins After combining the elliptical refrigerant tube and the refrigerant tube is bent and arranged by pressing down the protruding cooling fin heat.

9 is a state diagram showing a state in which a fixing plate is attached to fix the bent refrigerant pipe of the condenser for refrigerator of the present invention. As shown in the figure, the fixing plate 40 is fitted to secure the row of cooling fins arranged on both sides of the cooler in which the radiating fins are arranged.

10 is a perspective view showing a state after the heat radiation fins of the condenser for refrigerator of the present invention are arranged. As shown in the figure, after fixing the heat radiating fins 10 to the jig jagged jig for each fin section forming each cooling fin row in the elliptical refrigerant pipe 30, the elliptic refrigerant pipe is press-fitted into the holes of the heat radiating fins to radiate the fins and the elliptical refrigerant After the pipes are combined, the refrigerant pipes are bent and arranged by pressing down the protruding cooling fins. After the above process, the elliptical refrigerant tube is arranged in a zigzag to form an angle of 30 ~ 40 ° viewed from the side to be in contact with the air evenly.

In order to improve the heat dissipation effect of the condenser, a plurality of independent heat dissipation fins may be attached to the refrigerant pipes and the refrigerant pipes may be banded and then arranged in a zigzag manner so that the air passing through the condenser is in uniform contact with the refrigerant pipes and the cooling fins. By improving the cooling efficiency and making the direction of the long axis of the elliptical refrigerant pipe coincide with the flow direction of the air, the heat dissipation area by the heat dissipation fin is increased to increase the thermal efficiency and to prevent the generation of turbulence at the rear of the refrigerant pipe, Formation can be prevented.

Claims (3)

In the condenser for a refrigerator, a condenser for a refrigerator composed of an elliptical refrigerant pipe (30) made of a single winding steel pipe and a plurality of independent heat dissipation fins (10) inserted into and coupled to the refrigerant pipe. According to claim 1, The elliptical refrigerant pipe 30 is a plurality of independent heat dissipation fins (10) is inserted and attached, and then bent in multiple stages to form a plurality of refrigerant tube strings, the refrigerant tube string formed by the multi-stage bending arranged in a zigzag Condenser for refrigerator, characterized in that forming an angle of 30 ~ 40 ° viewed from the side The condenser for a refrigerator according to claim 1, wherein the elliptical refrigerant pipe (30) is bent in multiple stages to form a series of refrigerant pipes, and the direction of the long axis of the elliptical refrigerant pipe is coincident with the flow direction of air.