JPH08285364A - Air conditioner - Google Patents

Abstract

PURPOSE: To facilitate the bending work of a plate fin tube type heat exchanger by a method wherein the heat exchanger is arranged to be slanted so that one side thereof becomes higher than the other side and a plate fin is slanted with respect to the horizontal line while the tube is worked to be bent. CONSTITUTION: A heat exchanger 30 is slanted slightly with respect to the horizontal line so that the left side thereof becomes higher than the right side while the upper part is bent toward the rear stream side to cover the upper part of a cross flow fan 4. According to this method, a plate fin 31 is slanted slightly with respect to the horizontal line and, accordingly, a tube 32 is slanted slightly with respect to the vertical line and the upper part of the tube 3 is slanted rearwardly. Accordingly, the plate fin tube type heat exchanger can be easily worked so as to bend the tube easily and, further, the tube can be bent at arbitrary position with arbitrary radius of curvature whereby the man- hours and the cost of the bending work can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall-mounted air conditioner.

[0002]

2. Description of the Related Art An example of a conventional wall-mounted air conditioner is shown in FIG. Juan casing 1 and front panel 2
The heat exchanger 3 is erected so as to face the suction grill 10 in the ventilation passage 12 formed inside the main body case 19 made of, and the through-flow fan 4 is horizontally arranged downstream of the heat exchanger 3. It is set up. Further, below the heat exchanger 3, a drain pan 8 is provided.
Is provided. Horizontal flaps 6a, 6b and a louver 7 are provided at an air outlet 5 formed in a lower portion of the front panel 2.

During operation of the air conditioner, the once-through fan 4 rotates, and the refrigerant from the outdoor unit (not shown) circulates in the heat exchanger 3. Then, the indoor air is sucked into the ventilation passage 12 from the suction grille 10, and when passing through the filter 9, the dust contained therein is removed. Then, in the process of flowing through the heat exchanger 3, the heat is exchanged with the refrigerant to be cooled or heated, and then,
After being sucked into the once-through fan 4 and biased, the blowout direction is restricted by the louver 7 and the horizontal flaps 6a and 6b, and the blowout air is blown out into the room.

The heat exchanger 3 comprises a large number of plate fins 3A which are arranged in parallel with each other with a small gap in the horizontal direction, and a large number of tubes 3B which extend through the fins in the horizontal direction at predetermined intervals. It has. Then, the cutouts 3C and 3C are formed from the upstream side edge and the downstream side edge of each plate fin 3A.
The heat exchanger 3 is bent in a dogleg shape by inserting 3D and bending the plate fin 3A.

Thus, during the cooling operation, the plate fin 3A
Also, the drain condensed on the surface of the tube 3B is dropped onto the drain pan 8 along the surface of the plate fin 3A. By bending the heat exchanger 3, the vertical height of the body case 19 is shortened by reducing the vertical height without reducing the air inflow area.

[0006]

In the above-mentioned conventional air conditioner, the fins 3A of the plate fin tube type heat exchanger 3 have notches 3C and 3D, and the fins 3A must be bent. However, there is a problem that the number of steps and the cost are increased.

[0007]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above-mentioned problems, and its gist is to provide a plate in a ventilation passage through which air urged by a fan flows. In an air conditioner in which a fin-tube heat exchanger is erected so that its plate fins are parallel to the wind and a drain pan is arranged below it, the heat exchanger is inclined so that one side is higher than the other side. In the air conditioner, the plate fins are inclined with respect to the horizontal by arranging them and the heat exchanger is curved by bending the tube.

Another feature is that the fan is horizontally installed as a through-flow fan on the downstream side of the heat exchanger, and the upper part of the heat exchanger is curved so as to cover the upper part of the through-flow fan. Especially.

[0009]

In the present invention, by bending the tube, the upper portion of the plate fin tube type heat exchanger can be curved so as to cover the upper portion of the flow-through fan.
Then, when the once-through fan is driven during cooling operation, the air urged by this flows through the gap between the plate fins of the plate fin tube heat exchanger so as to be parallel to this, and condensation is formed on the surface of the plate fins and tubes. The drained water is dropped into the drain pan along the inclined plate fins.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIG. The plate fin tube heat exchanger 30 includes a large number of plate fins 31 arranged with minute gaps and a large number of tubes 32 penetrating the plate fins 31 at predetermined intervals.
, End plates 33, 34, hairpin 35, bend 36
It is equipped with

As shown in FIG. 1B, the heat exchanger 30 is slightly inclined with respect to the horizontal so that its left side is higher than its right side, and its upper portion flows through toward the wake side. It is curved to cover the upper part of Juan 4. As a result, the plate fin 31 is slightly inclined with respect to the horizontal, and accordingly, the tube 32 is slightly inclined with respect to the vertical and the upper portion thereof is inclined rearward. Other configurations are the same as those of the conventional one shown in FIG. 2, and corresponding members are designated by the same reference numerals and the description thereof is omitted.

The heat exchanger 30 is composed of the plate fin 31, the tube 32, the end plates 33 and 34, and the hairpin 3.
5. After assembling the bend 36 and the like, the tube 32 can be bent easily, and can be bent at an arbitrary position and with an arbitrary curvature.

Further, since the plate fins 31 are slightly inclined with respect to the horizontal, the drainage condensed on the surfaces of the plate fins 31 and the tubes 32 during the cooling operation is dropped onto the drain pan 8 along the plate fins 31.

[0014]

According to the present invention, the plate-fin tube heat exchanger can be bent easily by bending the tube, and can be bent at any position and with any curvature. The number of bending processes and the cost can be reduced.

Further, since the plate fin tube type heat exchanger machine is installed so as to be inclined with respect to the horizontal so that one side is higher than the other side, the drainage condensed on the surface of the plate fin or the tube is transmitted through the plate fin during the cooling operation. Can be dropped into the drain pan.

[Brief description of drawings]

1 shows an embodiment of the present invention, (A) is a longitudinal sectional view,
(B) is a view taken along the arrow B in (A).

FIG. 2 is a vertical sectional view of a conventional air conditioner.

[Explanation of symbols]

 19 Body case 30 Heat exchanger 31 Plate fin 32 Tube 4 Through-flow fan 8 Drain pan

Continuation of the front page (72) Inventor Shoichi Uno 3-1-1 Asahi-cho, Nishibiwajima-cho, Nishikasugai-gun, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Air Conditioning Factory

Claims (2)

[Claims] 1. A plate fin tube type heat exchanger is erected so that its plate fins are parallel to the wind in a ventilation passage through which air urged by a fan flows, and a drain pan is arranged below it. In the air conditioner, the heat exchange is performed by arranging the heat exchanger so that one side is higher than the other side so that the plate fins are inclined with respect to the horizontal and the tube is bent. An air conditioner characterized by curving the vessel. 2. The heat exchanger is horizontally installed on the downstream side of the heat exchanger as a once-through fan, and the upper part of the heat exchanger is curved so as to cover the upper part of the once-through fan. Item 1. The air conditioner according to Item 1.