JP2534013Y2 - Indoor unit of air conditioner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner, and more particularly, to means for preventing dew formation on an inner wall of the indoor unit during a cooling operation.

[0002]

2. Description of the Related Art A housing of an indoor unit of an air conditioner is composed of a main body and a front cover detachably mounted on the main body, and an upper portion of the housing has a suction for taking in indoor air. A mouth is provided, and an outlet for discharging heat-exchanged air into the room is formed in a lower part of the front surface.
In the air passage connecting the suction port and the air outlet, for example, a heat exchanger formed in an inverted V shape is disposed so as to face the main body side and the front cover, respectively, and a blower (cross flow fan) is provided. It is located below the heat exchanger. By the way, since dew condensation water adheres to the heat exchanger during the cooling operation and may deteriorate the heat exchange performance, a defrosting operation or the like is performed to cause the dew condensation water to flow down. After being received by a dew receiving groove separately provided in the lower part of the heat exchanger, the water is drained through a drain pipe leading to the outside of the room.

[0003]

However, when the heat exchanger is formed in an inverted V-shape as described above, it is necessary to also provide two dew receiving grooves for receiving dew water at the front and rear. The condensed water from the heat exchanger that has flowed down into these two dew receiving grooves must be drained out of the room by means of a drain pipe, but since there is only one drain pipe, the connection port (inlet) of the drain pipe Until then, a water channel is provided to let the water flow down. However, of the two dew receiving grooves, the rear dew receiving groove and the water channel are not directly connected, and the dew water from the rear dew receiving groove is an air passage in which a heat exchanger, a blower, and the like are housed. After flowing down along the outer wall of the air passage, it is received by the water channel provided on the outer wall of the air passage, and is directed to the inlet of the drain pipe. There is a problem that there is no room in space because of the above components, and it is not possible to sufficiently insulate the side wall of the air passage. In addition, the temperature of the condensed water flowing down the side wall of the air passage is lower than the temperature in the air passage.
The temperature may be as low as 10 ° C., and there is a problem that the temperature difference between the inside and outside of the air passage causes dew condensation on the inner wall of the air passage, and sometimes water droplets are discharged (fall) from the air outlet into the room. Such problems are related to the installation condition of the indoor unit and the degree of left and right inclination of the heat exchanger installed in the air passage, and if the heat exchanger is inclined, the heat exchanger The condensed water flowing down from the bottom of the inclined heat exchanger collectively flows down from the lower end of the heat exchanger, so that a large amount of the condensed water flowing down to the water channel from the dew receiving groove on the back side also flows down in a short time, and air The temperature difference between the inside and outside of the passage becomes larger, and dew condensation easily occurs. Therefore, an object of the present invention is to solve these problems and to provide an indoor unit of an air conditioner in which dew condensation is suppressed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the same air is connected to an air passage connecting an inlet at an upper portion of a housing and an outlet at a lower portion of the housing. Opposite inverted V-shaped heat exchangers are provided on the front and back of the passage, and dew water flowing down from the heat exchanger is collected in two front and rear dew receiving grooves arranged at the lower part of the heat exchanger. Then, in the indoor unit of the air conditioner configured to drain the water outside through the drain pipe, a plurality of ribs in contact with the bottom surface of the heat exchanger are provided within a dew receiving groove provided on the back side at a predetermined interval. I decided to place in.

[0005]

According to the above construction, since some ribs arranged in the dew receiving groove are in contact with the heat exchanger, dew water from the heat exchanger is transmitted through those ribs, and Even when the housing is inclined, dew water from the heat exchanger does not flow down from one side of the lower part of the heat exchanger, even if the housing is inclined. Flows down into the dew receiving groove. Therefore, the condensed water flowing down from the dew receiving groove toward the drain pipe does not intensively flow in a short time, so that the side wall of the air passage is not extremely cooled. Therefore, dew condensation on the inner wall of the air passage hardly occurs.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing the appearance of the indoor unit, and FIG. 2 is a side sectional view showing the inside of the indoor unit. The housing 1 comprises a main body 2 and a front cover 3 which is detachably mounted on the main body 2. Front panel 3a of front cover 3
Is pivotally supported at the upper part so that it can be opened and closed. In addition, suction ports 4a and 4b for room air are provided in an upper portion of the front cover 3,
An outlet 5 is formed in the lower part of the front surface. Inlet 4a,
An air passage 6 is formed between the air outlet 4b and the air outlet 5. In the air passage 6, a detachable air filter 7 which can be moved toward the main body 2 along the inner surface of the front cover 3 is provided. , A heat exchanger 8 divided into three parts, and a blower (cross flow fan) 9 are arranged, and air exchanged by the heat exchanger 8 is sent to the outlet 5 by the blower 9, and the wind direction to the room is changed. It is adapted to be adjusted by the wind direction plate 10.

The heat exchanger 8 is divided into three parts in the horizontal direction, and two adjacent ones are formed in an inverted V-shape. One of them is arranged toward the body 2 and the other is arranged toward the front cover 3. ing. The blower 9 is provided at the lower center of the heat exchanger 8 formed in an inverted V shape. With such an arrangement, the distance difference between the blower 9 and each of the three heat exchangers is reduced, so that the distribution of air passing through the heat exchanger 8 (wind speed distribution) can be improved, and the housing 1 Can be reduced in size.

In the figure, reference numerals 11 and 12 designate dew receiving grooves for receiving dew water flowing down along the heat exchanger 8, respectively. The dew receiving groove 11 near the front cover 3 only receives dew water. Instead, it also forms part of the wall of the air passage 6 as shown by a broken line. Reference numeral 13 denotes a part of the dew receiving groove 12, which is a rib formed on the inner surface of the main body 2 so as to receive the dew water of the heat exchanger 8 disposed on the main body 2 side and also serve as a rear tongue of the blower 9. , The tip of which extends substantially parallel to the inclined surface of the heat exchanger 8. Therefore, there is no protrusion that obstructs the flow of air, and the air passage 6 is in a state of being widely secured.

Reference numeral 14 denotes a part of a side wall of the air passage 6, and the side wall 14 receives a condensed water from the two front and rear dew receiving grooves 11, 12 and flows down to a drain pipe (not shown). Is provided. The water channel 15 extends to the back side of the air passage 6, and can also receive dew water flowing down from the dew receiving groove 12 along the back surface of the air passage 6. The condensed water received in this waterway advances in the direction of the arrow, is injected into the drain pipe from the drain port 16, and is drained outside the room.

FIG. 3 is an enlarged view of a main part of the dew receiving groove 12,
In this embodiment, a plurality of ribs 17 as shown in this figure are provided upright on the bottom surface of the exposure groove 12 at intervals of about 50 mm. The upper surfaces of these ribs 17 are lightly in contact with the bottom of the heat exchanger 8, and a gap is provided at the bottom of the dew receiving groove 12 so that dew condensation water does not collect between the ribs. I have.
Therefore, even if the installation of the indoor unit is slightly inclined, the dew water flowing down from the heat exchanger 8 does not flow down from one side lower portion of the heat exchanger 8 intensively. Flows down into the dew receiving groove 12 in a dispersed state. Therefore, dew condensation water does not flow down from the dew receiving groove 12 to the water passage 15 at a stretch, and the side wall 14 of the air passage 6 is not extremely cooled, so that the inner wall of the air passage 6 does not condense. . In order to further reduce the amount of dew water flowing down the side wall, water passages 15 are provided on the left and right side walls of the air passage 6, and the left and right sides of the dew receiving groove 12 are larger than the center of the dew receiving groove 12. It may be inclined so as to be lower, and the dew water from the heat exchanger 8 may be diverted to the left and right side walls.

[0011]

If the indoor unit has the ribs described above in the dew receiving groove of the heat exchanger, the dew water from the heat exchanger can gradually flow down to the outside of the room. Therefore, the side wall of the air passage is not extremely cooled, and the temperature difference between the inside and the outside of the air passage is also reduced, so that the inner wall is not condensed. In addition, if there is no fear of dew condensation, it is possible to further reduce or eliminate the heat insulating material of the side wall and the waterway where the dew water flows down, so that the indoor unit can be further downsized.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an indoor unit showing one embodiment of the present invention.

FIG. 2 is a side sectional view of a main part of the indoor unit showing one embodiment of the present invention.

FIG. 3 is an enlarged perspective view of an essential part showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Main body 3 Front cover 4a Suction port 4b Suction port 5 Blow-out port 6 Air passage 7 Air filter 8 Heat exchanger 9 Blower 10 Ventilation plate 11 Exposure groove 12 Exposure groove 13 Rib 14 Side wall 15 Water channel 16 Drain port ( Drain pipe connection port) 17 rib

Claims (2)

(57) [Scope of request for utility model registration] 1. An air passage connecting an intake port at an upper portion of a housing and an outlet at a lower portion of the housing is provided with an inverted V-shaped heat exchanger opposed to a front surface and a rear surface of the air passage, respectively. In the indoor unit of the air conditioner, the condensed water flowing down from the exchanger is collected in two front and rear dew receiving grooves arranged at the lower part of the heat exchanger, and then drained to the outside through a drain pipe. An indoor unit for an air conditioner, wherein a plurality of ribs in contact with a bottom surface of the heat exchanger are arranged at predetermined intervals inside a dew receiving groove provided on the back side. 2. The dew receiving groove on the back side is inclined so that the left and right sides of the dew receiving groove are lower than the center of the dew receiving groove, and the dew water from the heat exchanger is diverted to the left and right. Item 2. An indoor unit of the air conditioner according to Item 1.