KR200410848Y1 - An evaporator for air-conditioner - Google Patents

Abstract

The present invention relates to an evaporator structure of an air conditioner, the evaporator of the air conditioner according to the present invention, the refrigerant inlet, the evaporator having a refrigerant outlet and a plurality of tubes and heat radiation fins are bent in a "U" shape formed; And a first blower for blowing cold air generated by the evaporator toward the cold air discharge port, and a second blower, wherein the first blower is located outside the “U” shaped evaporator, and the second blower is It is located in the area surrounded by the "U" evaporator, and according to this structure, since the vaporization of the refrigerant is smooth, the liquid hammer phenomenon in the compressor is prevented, the cooling efficiency of the evaporator is maximized.

Air conditioners, evaporators, expansion valves, blowers, liquid hammer

Description

An evaporator for air-conditioner}

1 is a schematic diagram of a circulation cycle of a conventional air conditioner.

2 is a block diagram of an evaporator according to the present invention.

※ Description of main part of drawing

1: compressor 2: condenser

3: expansion valve 4: evaporator

10: evaporator 10b: first evaporation zone

10a: second evaporation zone 110: refrigerant tube

120: heat radiation fin 210: refrigerant inlet

220: refrigerant outlet

30: blower 30a: first blower

30b: second blower 40: connector

50: cold air discharge port

The present invention relates to a structure of an air conditioner evaporator for a vehicle, and more particularly, an evaporator core of an evaporator connected to the evaporator is bent to form a “U” shape from a expansion valve, and a cold air discharge port is formed in a space formed by bending the core portion. The second blower is further provided toward the structure of the evaporator in which the cooling efficiency is increased.

In general, the cooling device is various for automobiles, industrial, marine, aviation, industrial, etc., the operation is the same, the accompanying drawings, Figure 1 is a schematic diagram of the circulation cycle of a conventional air conditioner, according to the cooling device The main components constituting the compressor include: a compressor (1) for compressing a low temperature low pressure gas refrigerant into a high temperature and high pressure gas refrigerant, a condenser (2) for changing a state of the high temperature and high pressure gas refrigerant into a high temperature and high pressure liquid refrigerant, An evaporator 4 for changing a high temperature and high pressure liquid refrigerant into a low temperature low pressure gas refrigerant, and an expansion valve installed at an inlet side of the evaporator to smoothly change the state of the high temperature and high pressure liquid refrigerant into a low temperature low pressure gas refrigerant. 3) is configured to include.

The evaporator 4 is supplied with a refrigerant at low temperature and low pressure from the expansion valve 3 to cause the blower 30 to exchange heat with the outside. According to the conventional general evaporator structure, In the state that the refrigerant is not completely vaporized because the rapid rotation of the blower 30 is insufficient for sufficient heat exchange between the evaporator and the outside air, and the evaporator 4 does not completely remove heat from the outside air. Due to the inflow into the compressor 1, a liquid hammer phenomenon occurs, resulting in electrical loss due to breakage and overheating of the compressor 1.

The present invention was devised to solve the above problems, and the object of the present invention is to modify the structure of the heat exchange part of the evaporator and further include a separate blower, thereby promoting the complete vaporization of the refrigerant in the evaporator liquid hammer It is to provide an evaporator structure that can prevent the phenomenon and increase the cooling efficiency.

Evaporator according to the present invention for achieving the above object, Evaporator having a refrigerant inlet, and a refrigerant outlet, including a plurality of tubes and the heat dissipation fin and bent in a "U" shape; And a first blower and a second blower which blow the cold air generated by the evaporator toward the cold air discharge port,

The first blower is located outside the “U” shaped evaporator, and the second blower is located in an area surrounded by the “U” shaped evaporator.

In addition, the evaporation unit and the first evaporation region; Second evaporation zone; And at least one connecting tube communicating with the first and second evaporation regions, the “U” shape may be formed as a whole.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different forms, only this embodiment is intended to complete the disclosure of the present invention and the scope of the invention to those skilled in the art It is provided to inform you completely.

The evaporator according to the present invention is provided with an evaporator (10) formed to cause vaporization of the refrigerant through heat exchange and two blowers (30a, 30b) for blowing the cold air into the room, causing heat exchange. The evaporator 10, which is a part, includes a plurality of tubes 110 and heat dissipation fins 120, and the inlet 210 and the outlet 220 of the refrigerant for the heat exchange are respectively disposed on one side and the other side of the evaporator. Is formed.

The evaporator 10 is bent in a “U” shape to divide the first evaporation region 10b and the second evaporation region 10a, and the first evaporation region 10b is located adjacent to the expansion valve. The evaporation unit is connected to the refrigerant inlet tube from the expansion valve, and the second evaporation region 10a is positioned adjacent to the compressor and is connected to the refrigerant outlet tube through which the vaporized refrigerant is discharged to the compressor.

Therefore, the refrigerant flows in from the refrigerant inlet 210 of the side surface of the first evaporation region 10b, and the refrigerant in the low-gas low-pressure half-gas state discharged from the expansion valve moves downward along the plurality of refrigerant tubes 110 in the evaporation portion. Heat is exchanged with the outside air by the heat dissipation fins 120 installed along the tube 110 while being transported, and the air deprived of heat is changed to a low temperature state and the air is blown into the interior of the vehicle by the blower 30. Discharged.

Here, the heat exchange with the outside air is not performed properly by the rotation of the blower 30, and thus the refrigerant which is not completely vaporized is transferred to the upper part of the second evaporation region 10a through the bent portion of the evaporator 10, and thus, 2 to the heat exchange by the refrigerant tube 110 and the heat radiation fin 120 of the evaporation region (10a), and to the compressor through the refrigerant outlet formed on the side of the second evaporation region (10a), in the process The second blower 30b installed in the furnace promotes vaporization and discharges cold air through the evaporator.

At this time, the first blower (30a) is located outside the "U" -shaped evaporator is installed so that cold air generated in the evaporator passes through the evaporator toward the cold air discharge port, the second blower (30b) is "U" Located in the portion enclosed by the shape is installed so that cold air is blown through the evaporation portion toward the cold air discharge port.

The first evaporation region 10b and the second evaporation region 10a may also be connected by a connecting tube. The low-temperature, low-pressure half-gas refrigerant flowing out of the expansion valve may be disposed at one side of the first evaporation region 10b. The first refrigerant inlet is formed in the first evaporation region (10b) is introduced into the tube 110 and the heat radiation fin to absorb the heat of the outside air through heat exchange with the outside air to vaporize, the first evaporation region (10b) A first refrigerant outlet is formed in the lower portion of the at least one connecting tube to communicate with the outlet, the connecting tube is installed so as to communicate with the second refrigerant inlet of the second evaporation region (10a), vaporized refrigerant Is sent to the compressor through a second refrigerant outlet formed in the other side of the second evaporation region (10a).

The second evaporation region 10a is installed to face the first evaporation region 10b and communicates with a lower portion of the first evaporation region 10b and the second evaporation region 10a by a connecting tube to form an overall “U” shape. The first evaporation region 10b and the second evaporation region 10a are installed in the vertical direction with respect to the cold air outlet, and the refrigerant which is not completely vaporized is the first evaporation region 10b. The vaporization action is activated by the second blower 30b provided in the space portion between the second and second evaporation regions 10a, that is, the position surrounded by the “U” shaped evaporation portion.

The evaporator structure according to the present invention is a structure in which portions of the first evaporation region 10b and the second evaporation region 10a are connected to each other at a predetermined angle, and may be regarded as a “U” shape as described above. It can also be regarded as V "shape.

According to the evaporator structure according to the present invention configured as described above, even if the wind by the first blower (30a) is passed through the first evaporation region (10b) and the heat exchange is not performed properly, the second blower (30b) 2 The outlet temperature of the refrigerant passing through the evaporation region 10a is about 5 ° C., and only the low-temperature, low-pressure vaporized refrigerant is transferred to the compressor, thereby preventing the liquid hammer phenomenon from occurring, and thereby increasing the efficiency of the compressor. do.

According to the evaporator according to the above structure, the evaporator which promotes the complete evaporation of the refrigerant in the evaporator to prevent the liquid hammer phenomenon in the compressor, and also contribute to energy saving by the extension of the compressor life and the increase of cooling efficiency Is provided.

Claims (2)

An evaporator having a coolant inlet and a coolant outlet, including a plurality of tubes and heat dissipation fins, and being bent in a “U” shape; And a first blower and a second blower for blowing cold air generated by the evaporator toward the cold air discharge port, And the first blower is located outside the “U” shaped evaporator, and the second blower is located in an area surrounded by the “U” shaped evaporator. The "U" shape of claim 1, wherein the evaporator includes a first evaporation region, a second evaporation region, and at least one connection tube communicating the first evaporation region and the second evaporation region. Evaporator, characterized in that formed.

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