KR20000003899U - Indoor unit of package air conditioner - Google Patents

Abstract

The present invention relates to an indoor unit of a packaged air conditioner, which is configured by bending a heat exchanger disposed at an indoor unit at a predetermined angle, thereby improving the cooling capacity by reducing the heat exchange area and reducing the installation area. The heat exchanger 22 has a first heat exchanger 22a fixed to one inner wall 20a of the indoor unit 20 by an upper bracket 30, and an inner wall of the other side of the indoor unit 20 by a lower bracket 32. It is fixed to 20b) and consists of the 2nd heat exchange part 22b which is inclined at the predetermined angle with the 1st heat exchange part 22a through the notch 23. As shown in FIG.

Description

Indoor unit of package air conditioner

The present invention relates to an indoor unit of a package air conditioner, and more particularly, by configuring a heat exchanger disposed at an indoor unit at a predetermined angle, thereby increasing the heat exchange area to improve the cooling capacity and reduce the installation area of the package air conditioner. It is about an indoor unit.

In general, the air conditioner is to maintain the optimum temperature and humidity according to all climatic conditions and indoor environment, including a cooling device and heating device to cool or warm the indoor air, and a humidifier to maintain the humidity properly; Ventilation equipment for exhausting indoor air to the outside is included.

Among them, the cooling device uses the phenomenon of absorbing the heat of the surroundings when the liquid evaporates to perform the cooling operation. In addition to the cooling operation, the cooling operation is also performed. The cooling device having such a function is composed of a compressor for compressing the refrigerant into a gas of high temperature and high pressure, a condenser for liquefying the compressed high temperature and high pressure refrigerant, and a heat exchanger for evaporating the refrigerant expanded by the expansion valve. Cooling air heat-exchanged while passing through the heat exchanger is forcibly blown to the room where cooling is required by the blower.

Among such air conditioners, package air conditioners mainly installed in a small cooling space such as a home or a restaurant are separated into an outdoor unit and an indoor unit. The outdoor unit corresponds to a compressor for compressing a refrigerant and a condenser for condensing the refrigerant. The outdoor unit is installed on the roof or outside of a balcony due to noise and heat emission. The indoor unit has a structure as shown in FIG. 1 as a part for evaporating the refrigerant sent from the condenser and supplying it to the room.

1 is a side cross-sectional view schematically illustrating an indoor unit 10 constituting a conventional package air conditioner, and a heat exchanger 12 is disposed at an angle inclined at a predetermined angle in a lower portion thereof. The centrifugal fan 14 is arranged in the upper part. Therefore, as the centrifugal fan 14 rotates, the air introduced through the inlet 11 is heat-exchanged in the course of passing through the heat exchanger 12 through which the refrigerant introduced from the outdoor unit flows and cools. The cooled air is supplied to the room through a discharge port 16 provided in front of the upper part of the indoor unit 10. The upper end of the heat exchanger 12 is fixed to one inner wall 10a of the indoor unit 10 by the upper bracket 18 and the lower end is fixed to the other inner wall 10b of the indoor unit 10 by the lower bracket 19. .

Figure 2 is a perspective view showing a conventional heat exchanger installed in the indoor unit of such a package air conditioner. As shown, conventional heat exchangers have a straight structure. In other words, while the refrigerant flowing from the condenser is sent to the plurality of tubes, the header having a straight shape to discharge the heat exchanged refrigerant to the compressor while passing through the tube.

Since the heat exchanger installed in the indoor unit of the package air conditioner has a linear shape, the cooling performance of the package air conditioner is reduced. That is, since the linear heat exchanger is inclined inside the conventional indoor unit, the contact area between the air flowing through the suction port and the heat exchanger is limited by the operation of the centrifugal fan. Therefore, in order to increase the contact area with air, the size of the heat exchanger should be increased. However, when the size of the indoor unit is increased, a large installation space is required, resulting in an increase in manufacturing cost. Due to the limitation of the heat exchange contact area, there is a problem that the cooling performance is lowered because the heat exchange rate is low.

The present invention devised to solve the above problems is to modify the structure of the heat exchanger disposed in the indoor unit to increase the heat exchange contact area with the intake air to increase the heat exchange rate and improve the cooling performance indoor unit of the air conditioner The purpose is to provide.

1 is a cross-sectional view showing a conventional package air conditioner,

Figure 2 is a perspective view showing a heat exchanger installed in a conventional indoor unit,

3 is a cross-sectional view showing a package air conditioner of the present invention,

4 is a perspective view showing a heat exchanger installed in an indoor unit of the present invention;

5 is an enlarged view of a portion A of FIG. 4;

6 is a perspective view showing a heat exchanger of the present invention with a spacer fitted therein.

♣ Explanation of symbols for main part of drawing ♣

20: Indoor 21: Intake

22: heat exchanger 22a, 22b: first and second heat exchanger

22c: Notch 30, 32: Mounting bracket

40: Spacer 40a: V-shaped protrusion

An object of the present invention described above is an outdoor unit having a compressor for compressing a refrigerant and a condenser for cooling the compressed refrigerant, and a heat exchanger for cooling the air sucked in accordance with the operation of the centrifugal fan while the refrigerant flowing from the condenser flows. In the package air conditioner composed of the indoor unit, the heat exchanger is fixed to the inner wall of the indoor unit by the first bracket, and the heat exchanger is fixed to the inner wall of the indoor unit by the lower bracket, the first heat exchanger through the notch It is achieved by the indoor unit of the package air conditioner, characterized in that it consists of a second heat exchanger arranged inclined at a predetermined angle.

Hereinafter, with reference to the accompanying Figures 3 to 6 will be described in detail with respect to the indoor unit of the package air conditioner according to a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view showing a package air conditioner of the present invention, Figure 4 is a perspective view showing a heat exchanger installed in the indoor unit of the present invention, Figure 5 is an enlarged view of a portion of Figure 4 and Figure 6 is a spacer of the present invention is fitted A perspective view of a heat exchanger.

First, as shown in Figure 3, in a preferred embodiment of the present invention as a way to increase the contact area with the suction air introduced through the suction port 21 in accordance with the operation of the centrifugal fan 24, The shape was changed from the conventional straight structure to the curved structure bent at a predetermined angle. That is, after the heat exchanger 22 is formed of two heat exchangers 22a and 22b, the first heat exchanger 22a is fixed to one inner wall 20a of the indoor unit 20 by the upper bracket 30. On the other hand, the second heat exchange part 22b adopts a structure that is fixed to the other inner wall 20b of the indoor unit 20 by the lower bracket 32. The vortex prevention spacer 40 is fitted in the curved part between the 1st heat exchange part 22a and the 2nd heat exchange part 22b.

Therefore, the air sucked in accordance with the operation of the centrifugal fan 24 passes through the first heat exchange part 22a and the second heat exchange part 22b of the curved heat exchanger 22 of the present invention, so that a larger amount of heat exchange is performed. Made and cooled, and then supplied to the room to be cooled through the discharge port 26.

4 shows a heat exchanger 22 employed in the present invention. As described above, the first heat exchanger 22a and the second heat exchanger 22b are separated to increase the contact area with the suction air, and the notch 23 is formed between the heat exchangers 22a and 22b. Is formed. This notch 23 is involved in the process of bending the two heat exchangers 22a and 22b, and the air introduced through the intake port 21 of the indoor unit 20 is enlarged in FIG. The problem of forming occurs.

In the preferred embodiment of the present invention, a spacer 40 as shown in FIG. 6 is employed as a method for preventing vortex formation due to intake air. The spacer 40 is formed with a V-shaped protrusion 40a, which is a portion inserted into the notch 23 of the heat exchanger 22. At the time of assembly, the V-shaped protrusion 40a of the spacer 40 is first heat exchanged. It fits in the notch 23 formed between the part 22a and the 2nd heat exchange part 22b. Thus, since the spacer 40 is fitted to the notch 23, no vortex is formed in the process of contacting the suctioned air with the spacer 40, and thus, the first heat exchange part 22a and the second heat exchange part 22b. The heat exchange efficiency is increased because it is immediately guided through it.

According to the present invention described above, since the heat exchanger of the present invention disposed in the indoor unit of the package air conditioner has a curved shape at a predetermined angle, the contact area with the air sucked through the inlet port increases according to the operation of the centrifugal fan. As a result, the heat exchange rate is improved, and thus the cooling capacity of the air conditioner can be increased by improving the cooling performance. In addition, since the installation space of the heat exchanger is reduced because of the curved shape, there is an advantage that the size of the entire air conditioner can be reduced.

Claims (2)

Package air conditioner consisting of an outdoor unit having a compressor for compressing the refrigerant and a condenser for cooling the compressed refrigerant, and an indoor unit having a heat exchanger for cooling the air sucked in accordance with the operation of the centrifugal fan while the refrigerant flowing from the condenser flows. To The heat exchanger 22 has a first heat exchanger 22a fixed to one inner wall 20a of the indoor unit 20 by the upper bracket 30 and an inner wall of the other side of the indoor unit 20 by the lower bracket 32. An indoor unit of a package air conditioner, which is fixed to (20b) and comprises a second heat exchanger (22b) that is inclined at a predetermined angle with the first heat exchanger (22a) through a notch (23). The method of claim 1, Indoor unit of a package air conditioner, characterized in that the notch (23) of the heat exchanger (22) is fitted with a spacer (40) having a V-shaped protrusion (40a) for preventing the vortex of air introduced through the inlet (21).