KR20030043465A - Indoor unit of an air conditioning system - Google Patents

Abstract

PURPOSE: An indoor unit of an air conditioner is provided to improve heat exchange efficiency and sharply reduce the working noise by installing a spacer for preventing inflow of unavailable air. CONSTITUTION: An indoor unit of an air conditioner has a housing forming an air suction port; a lower evaporator(20A) having plural heat exchange fins(21) and a refrigerant pipe; an upper evaporator(20B) bent-up at a predetermined angle from the top of the lower evaporator; and a spacer(50) disposed between the lower evaporator and a bent-up portion(24) of the upper evaporator to prevent inflow of unavailable air. The spacer has a plate type cover(51) extended to close the bent-up portion, and plural fixed fins(52) disposed on a side of the cover and inserted between the heat exchange fins around the bent-up portion. Accordingly, sucked air is easily discharged through the whole area of the evaporator and heat exchange efficiency is improved and the working noise is reduced.

Description

Indoor unit of an air conditioning system

The present invention relates to an indoor unit of a separate air conditioner, and more particularly, to an indoor unit of an air conditioner having a spacer disposed between the bent portions of the evaporator to prevent inflow of reactive air.

In general, a separate air conditioner is used to harmonize air using a refrigeration cycle, and is divided into an outdoor unit installed outdoors and an indoor unit installed indoors. The outdoor unit is provided with a compressor, a condenser, and a fan constituting the refrigeration cycle, and performs the function of condensing the condenser through outdoor air during the cooling operation. On the other hand, the indoor unit is installed with an evaporator and a fan of a refrigerating cycle, and during the cooling operation, the indoor air is heat-exchanged while passing through the evaporator, and is continuously discharged back into the room to perform cooling.

The indoor unit of such a conventional air conditioner is provided with a housing forming an exterior, an evaporator, a drip tray and a fan embedded in the housing.

The housing consists of a front panel formed with an inlet and a discharge port for air distribution, and a rear panel which is coupled with the front panel and forms a space therebetween for refrigerating cycle components and electrical equipment therebetween. The evaporator is disposed adjacent to the inlet and heat exchanged with the sucked air, and the fan is disposed between the evaporator and the outlet for discharging the heat-exchanged air to the indoor side. In order to drive the fan, a fan motor is mounted on one inner side of the housing.

In addition, the drip tray is for collecting the condensed water generated in the evaporator to be discharged to the outside, the bottom of the evaporator is accommodated seated comfortably and coupled to the flexible drain hose.

When power is applied to the indoor unit of the conventional air conditioner configured as described above, when the fan rotates, the indoor air is sucked through the intake port, heat exchanged through the evaporator, and then discharged again through the discharge port, whereby the indoor air is harmonized. In addition, the suction of indoor humid air generates condensate in the evaporator, which is collected in the drip tray and is subsequently discharged out of the housing through the drain hose.

In the indoor unit of such a conventional air conditioner, the middle portion of the evaporator is bent and installed to further increase the heat exchange area with the intake air.

That is, referring to Figure 1, the conventional evaporator (1) applied to the indoor unit includes a plurality of heat exchange fins (1a) arranged in parallel and a refrigerant pipe (1b) penetrating it several times, most of the intake air will pass through The middle portion is cut in the longitudinal direction so as to be divided into the upper evaporator 3 and the lower evaporator 2, and the upper evaporator 3 is bent a predetermined angle to the rear side.

In addition, a spacer 5 is provided between the bent portion 4 of the upper evaporator 3 and the lower evaporator 2, which is because the air passing between the bent portions 4 is hardly heat exchanged. This is to prevent air from passing through.

The conventional spacer 5 has a triangular prism shape having three surfaces, and is disposed along the bent portion 4 to prevent the intake air from passing through this space.

However, in the conventional evaporator 1 structure, some of the condensed water generated during operation of the indoor unit is prevented from flowing down due to the spacer 5.

That is, when the indoor unit is operated, condensate generated in the upper evaporator 3 flows along the heat exchange fins 1a and descends to the triangular prism-shaped spacer 5, which condensed water forms on the surface of the spacer 5 and flows straight down. In this case, there is a problem that the heat exchange efficiency of the evaporator 1 is lowered because the flow of air is not made smoothly.

The present invention is to solve this problem, an object of the present invention is to improve the heat exchange efficiency of the evaporator by smoothly flowing down the condensate generated from the top of the evaporator by improving the spacer disposed between the bent portion of the evaporator. It is to provide an indoor unit of the air conditioner.

1 shows an indoor unit evaporator structure of a conventional air conditioner.

Figure 2 is an exploded perspective view showing the indoor unit of the air conditioner according to the present invention.

Figure 3 shows an excerpt of the structure of the spacer according to the present invention.

Figure 4 is a side cross-sectional view of the indoor unit according to the present invention, showing the mounting state of the spacer.

5 shows a structure of a spacer according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10. Housing 11a. Intake

11b..outlet 20..evaporator

20A. Lower evaporator zone 20B. Upper evaporator zone

40.Fan 50.Spacer

51. Cover 52. Retaining pin

The present invention for achieving this object is;

A lower evaporator having a housing having an air inlet formed therein, a lower evaporator having a plurality of heat exchange fins and a refrigerant tube passing through the housing several times, an upper evaporator provided to be bent at an angle from the upper portion of the lower evaporator, In the indoor unit of the air conditioner disposed between the bent portion of the upper evaporator having a spacer for preventing the inflow of invalid air,

The spacer has a plate-like cover extending a predetermined length to close the bent portion, and a plurality of fixing pins provided on one surface of the cover and inserted and fixed between the heat exchange fins around the bent portion.

In addition, the fixing pin is characterized in that mainly provided on both ends of the cover.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Briefly explaining the accompanying drawings, Figures 2 to 4 show the overall structure of the indoor unit according to the present invention, Figure 5 shows another embodiment of the present invention. The indoor unit of the harmony unit will be described as an example.)

As shown in FIG. 2, the indoor unit of the air conditioner according to the present invention includes a housing 10 constituting an outer body, an evaporator 20 installed in the housing 10 and generating cold air by heat exchange with intake air. And a fan 40 for forcibly blowing cold air generated after passing through the evaporator 20 to the indoor side, and a drip tray 30 disposed under the evaporator 20 to collect condensate.

The housing 10 is formed by combining the front panel 11 and the rear panel 12 to form a space in which refrigeration cycle components such as the evaporator 20 and the electrical equipment are built. The rear panel 12 is provided with the evaporator 20 and the fan motor 41 to be described later. In addition, the front panel 11 is formed with a suction port 11a through which the indoor air is sucked into the front side, and a discharge port 11b through which the heat-exchanged air is discharged back into the room. In addition, the front panel 11 is equipped with a grill device 13 for preventing the inflow of foreign matter, which is attached to the grill frame 13a which is detachably fastened to the front panel 11, and the rear of the grill frame 13a. And an air filter 13b to be attached.

The fan 40 consists of a kind of crossflow fan and is disposed in the horizontal direction along the space between the evaporator 20 and the discharge port 11b. In addition, a fan motor 41 for driving the fan 40 is mounted on one side of the housing 10, that is, the rear panel 12. Therefore, when the fan 40 is rotated by the driving of the fan motor 41, the heat exchanged air passing through the evaporator 20 is forced to blow to the discharge port (11b) side.

In addition, the evaporator 20 is installed inside the housing 10 so as to exchange heat with the intake air, which is arranged inside the housing 10, which is arranged in parallel with a plurality of heat exchange fins (see FIGS. 3 and 21) and the heat exchange fins 21. 3) and the return bend of the "U" shape (FIG. 3, 22) and the ends of the refrigerant pipe 22 which are out of the heat exchange fin 21 are interconnected to form one refrigerant pass line (FIG. 3, 23)

The evaporator 20 is divided into a lower evaporator region 20A and an upper evaporator region 20B by bending the upper portion to the rear side so as to increase the heat transfer area, and the detailed structure thereof will be described with reference to FIGS. 3 and 4. As follows.

First, the evaporator 20 is generally divided into a lower evaporator region 20A and an upper evaporator region 20B by cutting the middle portion of the heat exchange fins 21 in the horizontal direction. The upper evaporator region 20B is bent at a predetermined angle to the rear side so that the evaporator 20 is configured to correspond to the air intake port 11a formed in the front panel 11.

Further, a bent portion 24 is formed between the lower evaporator region 20A and the upper evaporator region 20B, and a spacer 50 is provided to prevent intake air from passing through the bent portion 24. (This spacer 50 is provided because the air passing through the space of the bent portion 24, as described in the prior art, is invalid air in which heat exchange with the heat exchange fins 21 hardly occurs.)

The spacer 50 includes a cover 51 extending a predetermined length so as to close the opening of the bent portion 24, and a plurality of spacers integrally provided on one surface of the cover 51 and fitted between the heat exchange fins 21. It includes a fixing pin (52, fin). The cover 51 extends corresponding to the horizontal length of the evaporator 20 and has a predetermined width so as to cover the entire opening portion of the bent portion 24 with a margin. And the fixing pins 52 are for inserting the spacer 50 between the bent portion 24 of the evaporator 20 and the heat exchange fins 21 adjacent to each other, so as to be formed at equal intervals on the rear surface of the cover 51. It is integrally injection molded and consists of a thin rectangular plate.

Therefore, when the fixing pins 52 are pushed between the heat exchange fins 21 (between the pin pitches of the heat exchange fins 21) around the bent portion 24 of the lower evaporator region 20A and the upper evaporator region 20B, The spacer 50 is fixedly arranged at the bent portion 24 of the evaporator 20. At this time, the fixing pins 52 are completely pushed in until the rear surface of the cover 51 contacts the heat exchange fins 21.

As a result, the spacer 50 is firmly fixed through the plurality of fixing pins 52 and at the same time the bent portion 24 between the lower evaporator region 20A and the upper evaporator region 20B is closed. Is prevented from passing through the inner space of the bent portion (24).

Next, the operation of the indoor unit according to the present invention configured as described above and the effects thereof will be described.

First, as the fan 40 is driven, the indoor air is sucked into the housing 10 through the suction port 11a while the foreign matter is filtered out, and heat exchanges while passing through the evaporator 20. At this time, since the bent portion 24 of the evaporator 20 is closed through the spacer 50, the suction air is returned to the lower evaporator region 20A and the upper evaporator region 20B by turning the spacer 50. And heat exchanges over it. That is, there is no invalid air passing through the inner space of the bent portion 24.

Subsequently, the heat-exchanged air is discharged back into the room through the discharge port 11b by the forced blowing force of the fan 40, whereby the indoor air is harmonized.

In the air circulation process, the evaporator 20 generates condensate by heat exchange with moist air sucked from the room, which is collected in the drip tray 30 and is continuously discharged to the outside of the housing 10.

At this time, the condensed water generated in the upper evaporator region 20B flows downward by its own weight (in the direction of arrow F in FIG. 4), which flows smoothly even when the installation portion of the spacer 50 is reached. That is, because the fixing pin 52 of the spacer 50 is made of a thin plate to be inserted between the heat exchange fins 21, the condensed water smoothly flows downward by its own weight even if the fixing pin 52 is caught.

Accordingly, since the condensed water generated in the upper evaporator region 20B flows smoothly without forming in the spacer 50, the intake air also smoothly passes through the entire evaporator 20, thereby improving heat exchange efficiency.

On the other hand, this technical idea has been described as an example that the fixing pin 52 of the spacer 50 is composed of a rectangular thin plate, but is not limited to this, even if the shape of the fixing pin in a variety of shapes, such as semi-circular, triangular, etc. Can be achieved.

In addition, as shown in FIG. 5, the fixing pins 52A are mainly formed only at both ends of the cover 51A to form the spacer 50A, thereby achieving the object of the present invention. This minimizes the number of fixing pins 52A for installing the spacer 50A as much as possible, thereby minimizing the contact of the fixing pins 52A with condensate flowing down from the upper evaporator region 20B to the lower evaporator region 20A. For sake.

As described above in detail, according to the indoor unit of the air conditioner according to the present invention, the inflow of the reactive air is prevented by the spacer disposed between the bent portion of the lower evaporator region and the upper evaporator region, Condensate easily flows down even if it comes into contact with the spacer pins.

Accordingly, the intake air easily exits the entire evaporator, thereby improving heat exchange efficiency and at the same time reducing operating noise.

Claims (2)

A lower evaporator having a housing having an air inlet formed therein, a lower evaporator having a plurality of heat exchange fins and a refrigerant pipe passing through the plurality of heat exchange fins, and an upper evaporator which is bent at an angle above the lower evaporator; In the indoor unit of the air conditioner having a spacer disposed between the bent portion of the lower evaporator and the upper evaporator to prevent inflow of invalid air, The spacer; A plate-shaped cover extending a predetermined length to close the bent portion; The indoor unit of the air conditioner is provided on one surface of the cover having a plurality of fixing pins are inserted and fixed between the heat exchange fins around the bent portion. The method of claim 1, The fixing pin is an indoor unit of the air conditioner, characterized in that mainly provided at both ends of the cover.