JPH07280338A - Heat exchanger for divided type air conditioner - Google Patents

Abstract

PURPOSE:To enable condensation water to be prevented from being dispersed and further to enable an air processing capability as well as a heat exchanging capability to be improved. CONSTITUTION:A heat exchanger for a discrete type air conditioner is constructed such that a fin group having a plurality of fins 1 arranged in parallel from each other with a specified interval being left therein is divided into an upper fin group and a lower fin group, and some pipes 2 constituting a heat exchanging coil in common with these upper and lower fin groups. A water shielding plate having a water stopping piece is placed at a gap between the upper and lower fin groups at a conditioned air discharging port, both ends of a top plate 3 and a bottom plate 4 constituting a frame member for protecting the fin groups are bent in such a way that a spacing between both ends may be expanded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a heat exchanger for a split type air conditioner.

[0002]

2. Description of the Related Art Generally, in an air conditioner, a heat exchange coil is commonly used in a fin group in which a plurality of fins a ... A are arranged in parallel at regular intervals as shown in FIG. In the case where a heat exchanger having a structure in which a pipe b constituting the above is inserted is used, and a heat exchanger having a high height must be used, the fin group is moved up and down as shown in the figure from the problem of the strength of the fins. There was no choice but to use a divided mold, and inevitably there were fin cuts or gaps u between the upper and lower fin groups.

During the cooling operation, heat is exchanged when the indoor air passes through the gap between the fins cooled by the drive of the fan to form cold air. At that time, the moisture contained in the indoor air is condensed on the surface of the fin group due to the temperature decrease, and the water droplets travel along the surface of the fin group and fall by their own weight, and are received by the drain pan c and discharged from the drain hole. However, since the fins themselves are divided into upper and lower parts to form a gap u between the fins, water droplets accumulate in the gap u, and the accumulated water drops are scattered from the conditioned air discharge port side by wind pressure. However, since it causes water leak accidents by wetting equipment and ducts, conventionally, slow the wind speed so that it does not scatter, or widen the width D of the drain pan to receive splashed water droplets. I was dealing with it.

In the former case, there is a problem that the air processing capacity and the heat exchange capacity are reduced due to the reduction of the air volume, and in the latter case, there is a problem that the space for installing the heat exchanger becomes wide.

A method of shortening the fin width instead of changing the width of the drain pan is conceivable in order to increase the air processing capacity and the heat exchange capacity without increasing the installation space. Need to be quite short,
This was not possible because the decrease in heat exchange efficiency due to the decrease in the heat exchange area was larger than the increase in the air processing capacity and heat exchange capacity due to the increase in air volume.

[0006]

An object of the present invention is to provide a draining plate in a gap between vertically divided fins, and to arrange both ends of a top plate and a bottom plate constituting a frame for protecting fins so that the distance between the both ends is small. It is intended to solve the above problems by curving so as to expand and reducing the inflow resistance and the discharge resistance of air to the heat exchanger.

[0007]

DISCLOSURE OF THE INVENTION In a split type air conditioner heat exchanger according to the present invention, a fin group in which a plurality of fins are arranged in parallel at regular intervals is divided into an upper fin group and a lower fin group. In a heat exchanger for a split type air conditioner in which a pipe that constitutes a heat exchange coil is inserted in common to the groups, a draining plate having a water blocking piece is attached to the gap between the upper and lower fin groups on the discharge side side of the conditioned air. At the same time, both ends of the top plate and the bottom plate that form the frame body that protects the fin group are curved so that the distance between the both ends is widened.

[0008]

The water droplets that have condensed on the surface of the upper fin group and have fallen down along the upper fin group and have reached the gap between the upper fin group and the lower fin group are drained even if they try to be scattered from the ends by wind pressure. It is stopped by the water blocking piece of the plate, and the air resistance is reduced by the top plate and bottom plate that expand the air inlet side and the discharge side, and the discharge speed of the conditioned air from the discharge side is slowed to reduce the water droplet scattering distance. To do.

[0009]

Embodiments of the heat exchanger of the present invention will be specifically described with reference to the drawings. 1 is a front view of the heat exchanger of the present invention, FIG.
[Fig. 2] is a side view of the central longitudinal section of Fig. 1. Reference numeral 1 is a heat exchange fin, and a plurality of fins are arranged in parallel at regular intervals to form an upper fin group 1A and a lower fin group 1B. Reference numeral 2 denotes a pipe that constitutes a heat exchange coil and is inserted in common with the fin groups 1A and 1B. 3 is a draining plate having a water blocking piece 31 which is inserted into the gap between the lower fin groups 1A and 1B on the conditioned air outlet side, and 4 and 5 constitute a frame body for protecting the fin group. The top plate and the bottom plate are curved at both ends so that the distance between the two ends widens.

During the cooling operation, the indoor air entering from the inlet side of the fin groups 1A and 1B by the drive of the fan enters the gap between the cooled fin groups and is gradually heat-exchanged and discharged. Conditioned air is discharged from the outlet. At that time, the moisture contained in the indoor air is condensed on the surface of the fin group due to the temperature drop, and the water droplets are transmitted along the surface of the fin group and fall by their own weight, and are received by a drain pan (not shown) to the outside of the machine. Although it is discharged, since the wind pressure is applied from the direction perpendicular to the drop direction of the water droplets, the fin group 1A,
The water droplets condensed on the surface of 1B are blown toward the end portion of the fin group, that is, the discharge port side, and are blown off from the end portion and scattered. Even if the water droplets blown to the lower end of the lower fin group 1B are blown away, there is no problem because the reaching distance is short, but to the lower end of the upper fin group 1A, that is, to the gap u of the upper and lower fin groups. The water drop that has fallen has a large reach when it is blown away, but since there is a water stop piece 31 of the draining plate 3 at this location, it is stopped by this water stop piece 31 to prevent the water drop from scattering. Then, the water accumulated in the trough-shaped groove 32 is transferred from the groove end portion through the pipe to the drain pan at the lower portion and drained.

Not only during the cooling operation but also during the heating operation, before the indoor air enters from the inlet side of the fin groups 1A and 1B by the drive of the fan, the inlet area is expanded by the spread of the end portions of the top plate 3 and the bottom plate 4 so that the conventional flat plate has Since it is wider than in the case of the top plate and the bottom plate, the inflow resistance of air is small, and the area at the outlet, that is, the discharge port side is also wide, so the outflow resistance is small, so a large amount of The air can be treated.

[0012]

According to the heat exchanger for a split type air conditioner according to the present invention, a draining plate having a water blocking piece is mounted in the gap between the upper and lower fin groups on the discharge side side of the conditioned air, and the fins are mounted. Both ends of the top plate and the bottom plate that form the frame body that protects the groups are curved so that the distance between the ends expands to lower the air resistance, so that they pass through the gap of the fin group. Condensed water does not scatter even if the wind speed is increased,
The air treatment capacity and heat exchange capacity can be improved by increasing the air volume.

[Brief description of drawings]

FIG. 1 is a front view of a heat exchanger of the present invention.

FIG. 2 is a vertical side view of the center of FIG.

FIG. 3 is a central longitudinal side view of a conventionally known heat exchanger.

[Explanation of symbols]

 1 fin 1A upper fin group 1B lower fin group 2 pipe 3 top plate 4 bottom plate

Claims (1)

[Claims] 1. A fin group in which a plurality of fins are arranged in parallel at regular intervals is divided into an upper fin group and a lower fin group, and a pipe constituting a heat exchange coil is inserted in common between these upper and lower fin groups. In a heat exchanger for a split type air conditioner, a draining plate having a water blocking piece is attached to a gap between upper and lower fin groups on the conditioned air discharge side, and a top plate constituting a frame body for protecting the fin groups. A heat exchanger for a split type air conditioner, characterized in that both ends of the bottom plate are curved so that the distance between the both ends widens.