KR20000004679U - Refrigerant circulation structure of heat exchanger - Google Patents

Abstract

The present invention is to provide a refrigerant circulation structure of the heat exchanger that can increase the amount of heat exchanger by increasing the length of the refrigerant passage by additionally installing the refrigerant supply pipe and the discharge pipe in the curved heat exchanger formed by bending the middle portion to increase the heat exchange area The heat exchanger includes a first inlet pipe 42 for sending the refrigerant introduced through the inlet pipe 40 to the lower end 10 "of the heat exchanger 10, and the refrigerant introduced through the inlet pipe 40. A second inlet pipe 44 for sending to the upper end 10 'of the heat exchanger 10, and a plurality of outlet pipes for passing the refrigerant cooled through the heat exchanger 10 to the evaporator through the outlet pipe 50 ( 52, 54, 56).

Description

Refrigerant circulation structure of heat exchanger

The present invention relates to a heat exchanger of a cooling device, and more particularly, to a curved heat exchanger formed by bending an intermediate portion to increase a heat exchange area, a coolant supply pipe and a discharge pipe are additionally installed to increase the length of the coolant flow path. It relates to a refrigerant circulation structure of the heat exchanger that can increase the.

The air conditioner is designed to maintain the optimum temperature and humidity according to all weather conditions and indoor environments. The air conditioner includes a cooling and heating device that cools or warms the indoor air. Ventilation apparatus for exhausting air to the outside is included.

Among them, the cooling unit cools the air by absorbing the surrounding heat when the liquid refrigerant evaporates to a gaseous state, and then supplies the cooled cold air into the room. It has a function and can be used to remove moisture in the rainy season. The overall configuration of a cooling apparatus having such a function includes a compressor for compressing a refrigerant into a high-temperature, high-pressure gas state, a condenser for liquefying the compressed high-temperature and high-pressure refrigerant, and an evaporator for evaporating a refrigerant expanded by an expansion valve. The cooling air heat exchanged while passing through the evaporator is forcibly blown into the room requiring cooling by the blower.

These cooling devices can be divided into various types according to the place of use, such as industrial, commercial and general household use. In general, a separate type air conditioner mainly installed in a living room of a sales office or a general home is divided into an indoor unit and an outdoor unit. Among them, the indoor unit is a part that evaporates the refrigerant sent from the outdoor unit and supplies it to the room. The outdoor unit corresponds to a compressor for compressing the refrigerant and a heat exchanger for condensing it. do.

Recently, as a way to increase the heat exchange area while reducing the overall space occupied by the heat exchanger, a bending heat exchanger having a curved middle portion of the heat exchanger has been used.

FIG. 1 is a side view illustrating a conventional bending heat exchanger. A rear cover 12 is attached to a rear surface of a heat exchanger 10 that is curved at a predetermined angle, and has a cross flow fan for introducing external air. -flow fan 14 is provided. As the fan 14 rotates, the air introduced in the direction of arrow A is heat-exchanged in the course of passing through the heat exchanger 10 and then discharged in the direction of arrow A '.

In addition, the heat exchanger 10 is connected to an inlet pipe 20 through which the compressed refrigerant sent from the compressor is introduced, and an outlet pipe 30 through which the heat exchanged condensed refrigerant is discharged toward the evaporator. The refrigerant delivered through the inlet pipe 20 is introduced into the upper end of the heat exchanger through branched inlet pipes 22 and 24, and then circulated in opposite directions along the arrow directions P and Q to exchange heat. The cooled refrigerant is supplied to the outlet pipe 30 through outlet pipes 26 and 28 connected to the lower end portion 10 "and the upper end portion 10 'of the heat exchanger, and then transferred to the evaporator.

In the refrigerant circulation structure of the heat exchanger having such a configuration, since most of the air introduced by the rotation of the cross flow fan and passing through the heat exchanger passes through the upper side rather than the lower side, the amount of heat exchange at the upper end is higher than the lower end of the heat exchanger. Nevertheless, conventionally, the refrigerant introduced into the heat exchanger through the inlet pipe is sent to the upper and lower parts equally through the inlet pipe and then discharged through the outlet pipe connected to the upper and lower parts, respectively, so that the upper part is not cooled properly. There is a problem that the lower end portion is the refrigerant is discharged in the state that the complete evaporation does not occur, the heat exchange capacity is lowered. In addition, since the condensed water flows to the lower end during the cooling operation, when the cooling operation is continuously performed, the air passage amount at the lower end gradually decreases, thereby decreasing the heat exchange capacity and reducing the cooling performance.

The present invention devised to solve the above problems connects two inlet pipes to the upper end of the heat exchanger and one long inlet pipe to the lower end to reduce the pressure drop at the upper end and induce sufficient heat exchange. The lower end side is to provide a refrigerant circulation structure of the heat exchanger that can improve the cooling performance by inducing complete evaporation because the refrigerant flow path is long.

1 is a side view showing a conventional heat exchanger,

Figure 2 is a side view showing a heat exchanger of the present invention.

♣ Explanation of symbols for main part of drawing ♣

10: heat exchanger 12: rear cover

14: Crossflow fan 40: Inflow pipe

42, 44: Inlet pipe 50: Outflow pipe

52, 54, 56: Outflow pipe 60: Branch pipe

The object of the present invention described above is a bending heat exchanger composed of an upper end and a lower end based on a curved portion of an intermediate point, the first inlet pipe for sending refrigerant introduced through an inlet pipe to a lower end of the heat exchanger, and through an inlet pipe. A second inlet pipe for sending the introduced refrigerant to the upper end of the heat exchanger, and a plurality of outlet pipes for passing the refrigerant cooled through the heat exchanger to the evaporator through the outlet pipe to the refrigerant circulation structure of the heat exchanger. Is achieved.

Hereinafter, with reference to the accompanying Figure 2 will be described in detail with respect to the refrigerant circulation structure of the heat exchanger according to a preferred embodiment of the present invention, the same parts as the conventional structure described in Figure 1 are denoted by the same reference numerals.

Figure 2 is a side view showing a heat exchanger of the present invention. As shown here, the bending type heat exchanger 10 having the intermediate point curved to increase the heat exchange area is composed of a lower end 10 "and an upper end 10 ', and the lower end 10" and Inlet and outlet refrigerant pipes 40 and 50 for introducing refrigerant, respectively, are connected to the upper end 10 '.

Among them, the inflow pipe 40 is disposed in consideration of the heat exchange amount between the upper end 10 'and the lower end 10 ". That is, the lower end 10" and the upper end 10' of the heat exchanger 10 are respectively arranged. After connecting the first and the second inlet pipe 44, the upper end portion 10 'is further provided with a branch pipe 60 to disperse the refrigerant introduced through the second inlet pipe 44 into two branches. It was. Accordingly, a larger amount of refrigerant is introduced through the second inlet pipe 44 and the branch pipe 60 as compared with the lower end 10 ". Here, the branch pipe 60 is connected to the first inlet pipe 44. It consists of the inflow end 62 in which refrigerant | coolant flows in, and two branch ends 64 and 66.

The outflow pipe 50 is connected to the heat exchanger 10 via a plurality of outflow pipes 52, 54, 56. The first outlet pipe 52 is connected to the lower end 10 "of the heat exchanger 10, and the second and third outlet pipes 56 are connected to the upper end 10 'of the heat exchanger 10. It is.

Therefore, the refrigerant introduced from the compressor through the inlet pipe 40 flows into the lower end 10 "and the upper end 10 'through the first inlet pipe 42 and the second inlet pipe 44, and The refrigerant sent to the upper end 10 ′ through the two inlet pipes 44 branches into the two branches through the branch pipe 60 and flows into the upper end 10 ′ in the direction of the arrow.

The refrigerant introduced into the lower end 10 "is cooled while circulating inside the heat exchanger 10 in the direction of the arrow, and then sent to the outlet pipe 50 through the first outlet pipe 52, and to the upper end 10 '. The refrigerant introduced in a large amount is sent to the outlet pipe through the second outlet pipe 54 and the third outlet pipe 56 after heat exchange with external air, and is supplied to the evaporator.

According to the present invention described above, by connecting two inlet pipes to the upper end of the heat exchanger and one inlet pipe having a long length to the lower end to reduce the amount of pressure drop at the upper end side to induce sufficient heat exchange and at the same time the refrigerant flow path at the lower end side Because of the long, there is an advantage to improve the cooling performance by inducing a complete evaporation to heat exchange evenly throughout the heat exchanger.

Claims (3)

In the bending heat exchanger consisting of the upper end 10 'and the lower end 10 "with respect to the curved part of the intermediate point, The first inlet pipe 42 for sending the refrigerant introduced through the inlet pipe 40 to the lower end 10 "of the heat exchanger 10, and the refrigerant introduced through the inlet pipe 40 to the heat exchanger A second inflow pipe 44 for sending to the upper end 10 'of 10; Refrigerant circulation structure of the heat exchanger, characterized in that it comprises a plurality of outlet pipes (52, 54, 56) for passing the cooled refrigerant passing through the heat exchanger (10) through the outlet pipe (50) to the evaporator. The method of claim 1, Refrigerant circulation structure of the heat exchanger, characterized in that it further comprises a branch pipe (60) for dispersing the refrigerant introduced through the second inlet pipe (44) on top of the heat exchanger. The method of claim 1, The first outlet pipe 52 is connected to the lower end 10 "of the heat exchanger 10 and the second and third outlet pipes 56 are connected to the upper end 10 'of the heat exchanger 10. Refrigerant circulation structure of the heat exchanger.