JPH11183077A - Interior machine for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a clean interior machine for an air conditioner with good heat exchanging efficiency, by improving flow of condensate of a heat exchanger provided in an air passage between inlet and an outlet. SOLUTION: In an interior machine, fins 15 of a heat exchanger 9 provided in an air passage 7 for connecting inlet ports 5a and 5b in the upper part of a main body 1 to a lower outlet port 6 are provided with louvers 15a, an upper heat exchanger 9a is inclined backward and a lower heat exchanger 9c is provided upright in front of a blower 10 by providing cut-out parts so that the condensate of the upper heat exchanger 9a flows down or the lower heat exchanger 9c. The upper end part of the fins 15 of the lower heat exchanger 9c is formed in a flat surface 15b having no louver and a space between the fins is increased so that the flow of the condensate to the lower heat exchanger 9c is improved.

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 the flow of dew condensation water of a heat exchanger provided in an air passage connecting an intake port at an upper part of a main body and an outlet at a lower part. It relates to the structure of the heat exchanger for improving the same.

[0002]

2. Description of the Related Art As an indoor unit of an air conditioner, for example, FIG.
Are configured as shown in FIG. In this indoor unit, an air filter 25, a heat exchanger 26, and a blower (cross flow fan) are provided in an air passage 24 connecting suction ports 22a and 22b formed in an upper portion of a main body 21 and an outlet 23 formed in a lower portion. ) 27 is arranged, and the wind direction to the room is
3 is adjusted by wind direction plates 28 and 29 provided in the apparatus. The heat exchanger 26 has its front face in the air passage 2.
4, an upper heat exchanger 26a inclined forward, a rear heat exchanger 26b connected to the upper part of the upper heat exchanger 26a and inclined rearward of the air passage 24, and an upper heat exchanger 26a.
And a lower heat exchanger 26c standing substantially vertically in front of the blower 27 and continuously connected to a lower portion of the fin 30. As shown in FIG.
And a heat transfer tube 31 in which a refrigerant flows orthogonally to the heat transfer tube 31.
And a connecting pipe (not shown) for connecting the heat transfer pipes 31 to each other, and the fins 30 have a large number of louvers (cut and raised).
A plurality of holes for inserting the heat transfer tubes 31 through the heat transfer tubes 30a are provided at predetermined intervals.

[0003]

By the way, in the indoor unit having the above-described heat exchanger 26, the fin surface of the heat exchanger 26 is cooled by the temperature difference from the indoor air taken in from the suction port 22 during the cooling operation. Condensation may form,
As the dew condensation state progresses, the heat exchange rate decreases, so that a predetermined dehumidifying operation is performed, and the dew condensation water on the upper heat exchanger 26a side flows down to the lower heat exchanger 26c. Since the fin 30 has a louver 30a as shown in FIG. 5A, the gap between the fins is narrow as shown in FIG. 5B, and the fin 30 has been used particularly for a long period of time (months). In the case of the indoor unit, dust that cannot be removed by the air filter 25 adheres to the end surfaces of the fins, and the gap between the fins is further narrowed.
The condensed water from a does not completely enter the space between the fins of the lower heat exchanger 26c but accumulates at the upper end thereof. There is a danger of causing mold 25 to form mold and splashing water droplets into the room. Therefore, an object of the present invention is to provide an indoor unit of an air conditioner in which the flow of dew condensation water from the upper heat exchanger to the lower heat exchanger is improved.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. An air filter is provided in an air passage connecting an inlet at an upper part of a main body and an outlet at a lower part of the main body. A heat exchanger and a blower are provided, and are arranged in parallel to each other at a predetermined interval and forming a plurality of louvers formed on the heat exchanger. The fins are fixed by making the heat transfer tubes orthogonal to each other, expanding the heat transfer tubes, cutting the fins after assembling, dividing at least the upper heat exchanger and the lower heat exchanger, and at a predetermined angle. Bending, the lower heat exchanger is erected in front of the blower, and the heat exchanged air is blown to the outlet by the blower, and the wind direction to the room is adjusted by the wind direction plate provided at the blower. For indoor units of air conditioners There are, between the said heat transfer tube of the front side uppermost of the lower heat exchanger cuts, and a configuration of forming the louvers between the front and side bottom of the heat transfer tube of the upper heat exchanger cuts.

[0005] Alternatively, a rectangular hollow portion is provided at the center of the cut of the fin between the adjacent U-shaped heat transfer tubes, and a recess is formed at the upper end of the fin of the lower heat exchanger. I do.

[0006]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 shows the internal configuration of an indoor unit from the side.
And a front panel 3 detachably mounted on the base 2.
A front cover 4 which is in front of the front panel 3 and whose upper end is pivotally supported at the upper part of the front panel 3 so as to be freely opened and closed.
It is composed of At the upper part of the main body 1 (the upper part of the front panel 3 and the front cover 4), a room air inlet 5 is provided.
a, 5b are provided, and an outlet 6 is formed at a lower portion. An air passage 7 connecting the inlets 5a, 5b and the outlet 6 has a filter guide 3a formed integrally with the front panel 3.
, A removable air filter 8 that can be moved to the rear of the lower part of the suction port 5b along the front surface of the suction port 5b, a heat exchanger 9, and an air outlet 6 that exchanges heat exchanged by the heat exchanger 9.
A blower (cross flow fan) 10 for blowing air to the room is provided.
1 and 12.

The heat exchanger 9 has an upper heat exchanger 9a having a front surface inclined forward of the air passage 7 and a rear end of the air passage 7 connected to the upper portion of the upper heat exchanger 9a. A rear heat exchanger 9b and a lower heat exchanger 9 which is connected to a lower portion of the upper heat exchanger 9a and is provided almost vertically in front of the blower 10.
The condensed water generated on the side of the rear heat exchanger 9b is received by the dew receiving part 13 provided on the base 2 side, and then is conveyed to the lower heat exchanger 9c through a water passage (not shown). Part 14
On the other hand, the condensed water generated on the upper heat exchanger 9a side flows down to the dew receiving portion 14 via the lower heat exchanger 9c,
The condensed water from the rear heat exchanger 9b is discharged out of the room via a drain pipe (not shown).

The feature of the present invention resides in that means for improving the flow of dew water from the upper heat exchanger 9a to the lower heat exchanger 9c are taken. FIG. 2 shows the first means. Upper heat exchanger 9
a, the heat exchanger 9 composed of the lower heat exchanger 9c and the like is composed of a number of fins 15 stacked at a predetermined interval, a heat transfer tube 16 orthogonal to the fins 15 through which the refrigerant flows, and the heat transfer tubes 16 The fin 15 is composed of a connecting pipe (not shown) or the like for connecting.
A plurality of louvers (cut-and-raised) 15a and a plurality of holes through which the heat transfer tubes 16 are inserted are provided at predetermined intervals. As a first means based on the present invention, as the first means, the frontmost part of the lower heat exchanger 9c is provided. The feature is that the upper fin surfaces are each formed as a flat surface 15b without a louver. With such a configuration, the gap between the uppermost fins is widened, and condensed water from the upper heat exchanger 9a does not collect at the upper end of the fins of the lower heat exchanger 9c. It flows down to the receiving part 14.

FIGS. 3A and 3B show the second means. A rectangular hollow portion is provided in the center of the cut 15d of the fin 15 between the adjacent U-shaped heat transfer tubes 16 and the upper heat exchanger 9a and the lower heat exchanger 9c are bent at a predetermined angle. The lower heat exchanger 9c is characterized in that a recess 15c is provided in the center at the upper end of the fin 15. With such a configuration, even if the louver 15a is provided at the upper end of the fin 15 of the lower heat exchanger 9c, the dew condensation water from the upper heat exchanger 9a flows into the recess 15c and easily flows down. The shape of the recess 15c is not limited to the illustrated shape, but may be an inverted trapezoidal shape or a crescent shape.

[0010]

As described above, if the apparatus is provided with the heat exchanger as described above, the flow of the condensed water flowing down from the upper heat exchanger to the lower heat exchanger is improved, and the condensed water flowing from the upper heat exchanger is improved. This eliminates problems such as jumping out to the air filter side and dripping to the blower side, and a safe and clean indoor unit can be obtained.

[Brief description of the drawings]

FIG. 1 is an internal configuration diagram of an indoor unit showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part of the heat exchanger according to the first embodiment of the present invention.

FIG. 3 is a heat exchanger showing a second embodiment of the present invention, wherein (A)
Is a plan view of the fin, and (B) is an enlarged perspective view of a main part.

FIG. 4 is an internal configuration diagram of an indoor unit showing a conventional example.

FIG. 5A is an enlarged perspective view of a main part showing a form of a conventional heat exchanger, and FIG. 5B is a front view showing a part of an upper form of a lower heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Base 3 Front panel 3a Filter guide 4 Front cover 5a, 5b Inlet 6 Outlet 7 Air passage 8 Air filter 9 Heat exchanger 9a Upper heat exchanger 9b Rear heat exchanger 9c Lower heat exchanger 10 Blower 11, 12 Wind direction board 13, 14 Exposure receiving part 15 Fin 15a Louver (cut and raised) 15b Flat surface 15c Depression 15d Cut 16 Heat transfer tube

Claims (2)

[Claims] An air passage connecting an intake port at an upper portion of a main body and an air outlet at a lower portion of the main body is provided with an air filter, a heat exchanger, and a blower, and a predetermined interval constituting the heat exchanger. The U-shaped heat transfer tubes are orthogonally arranged from one end of the plate-shaped fins arranged in parallel with each other and formed with a plurality of louvers, and the fins are fixed by expanding the heat transfer tubes. After assembly, cut into the fins, divide at least the upper heat exchanger and the lower heat exchanger, bend at a predetermined angle, erected the lower heat exchanger in front of the blower, heat exchanged air Is blown to the outlet by the blower, an air conditioner indoor unit configured to adjust the wind direction to the room by the wind direction plate provided in the outlet, the uppermost front side of the lower heat exchanger Between the heat transfer tube and the cut, An indoor unit of an air conditioner characterized in that it does not form a louver between the cuts and the front side bottom of the heat transfer tube of the fine the upper heat exchanger. 2. An air passage connecting an intake port at an upper part of the main body and an air outlet at a lower part of the main body is provided with an air filter, a heat exchanger, and a blower, and a predetermined interval constituting the heat exchanger. The U-shaped heat transfer tubes are orthogonally arranged from one end of the plate-shaped fins arranged in parallel with each other and formed with a plurality of louvers, and the fins are fixed by expanding the heat transfer tubes. After assembly, cut into the fins, divide at least the upper heat exchanger and the lower heat exchanger, bend at a predetermined angle, erected the lower heat exchanger in front of the blower, heat exchanged air Is blown to the air outlet by the blower, and the air flow direction plate provided at the air outlet adjusts the wind direction to the room. In the indoor unit of the air conditioner, the adjacent U-shaped heat transfer tubes are adjacent to each other. Notch of the fin between An indoor unit of an air conditioner, wherein a rectangular a vent portion provided in, by forming a recess in the fin upper portion of the lower heat exchanger central.