JPH06300305A - Heat exchanger in air conditioner - Google Patents

Abstract

PURPOSE:To condensed water without using an eliminator and without dispersing it into an air conditioner by perforating a water discharging hole on a recessed face section formed at an under frame of a heat exchanger. CONSTITUTION:A heat exchanger 1 of an air conditioner is so arranged that one stage or more than two is or are piled. And, in its interior section, a plurality of pipes P are arranged through which cooling water or coolant is made to pass, air which is made to pass through in a heat exchanger 1 is made to contact with outside peripheries of the pipes P or fins 2 and heat exchanging is executed. An upper frame 4 is arranged on an upper face of the heat exchanger 1, and a lower frame 3 is arranged on the under face thereof, recessed sections 3a, 3a are formed on the lower frame 3. This recessed section 3a is so formed along almost whole length of lateral length direction of the heat exchanger 1 that condensed water is made to be surely conducted to the recessed face section 3a when droplets of the condensed water fall along fins and the like. Hereby, the condensed water is discharged to an outside section and its dispersion into the air conditioner and/or suction of the condensed water into a blower do not happen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention ensures that when saturated steam passes through a heat exchanger, even if it is condensed and dropped, it is not scattered into the air conditioner or sucked into the blower, and is reliably discharged to the outside. The present invention relates to a heat exchanger in an air conditioner designed to be drained.

[0002]

2. Description of the Related Art During cooling operation, air to be cooled is passed through a heat exchanger in which a refrigerant is circulated, and the outer wall of the heat exchanger or fins are brought into contact with air to perform desired heat exchange. At this time, the moisture (saturated steam) in the air passing through the heat exchanger fins is condensed into water droplets and falls to the lower part of the heat exchanger. This condensed water is drained to the outside through a drain port formed in the lower frame of the heat exchanger.

[0003]

However, since the lower frame of the heat exchanger is generally made of a flat plate, even if a part of the condensed water is discharged from the drain hole, all the condensed water is discharged. It remains on the lower frame. This residual water is carried to the leeward side by the air flow that flows through the heat exchanger, and when the wind speed is high, this becomes scattered water into the air conditioner and is directly sucked into the blower, and water accumulates in the duct. However, there are drawbacks such as water leakage. Furthermore, it is also a cause of blower failure. For this reason, large machines are equipped with an eliminator.

An object of the present invention is to reliably discharge condensed water condensed in a heat exchanger without using an eliminator or the like and without scattering it into an air conditioner.

[0005]

The present invention has been made to achieve the above object, and a concave portion is formed on the lower frame of the heat exchanger over the entire lateral width thereof, and a drain hole is drilled in the concave portion. However, the point is that the condensed water is drained without being scattered into the air conditioner.

[0006]

In the lower frame of the heat exchanger, a concave portion is formed along the lateral width direction of the heat exchanger, and a drain hole is bored in the concave portion.
As a result, when saturated water vapor in the air passing through the heat exchanger is condensed and drops onto the lower frame, since the lower frame has a concave surface portion, the dropped water travels along the inclined surface of the concave surface portion. The water is collected and reliably drained from the drain hole in the concave portion, and the condensed water is neither scattered into the air conditioner nor sucked into the blower without the eliminator.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat exchanger in an air conditioner of the present invention will be described below based on the illustrated embodiments. In the figure, reference numeral 1 denotes a heat exchanger of an air conditioner, which has a required capacity, and the heat exchangers are arranged in a single stage or in a stack of two or more stages as shown in the drawing depending on the capability. In this heat exchanger 1, a plurality of pipes P are arranged inside, and cooling water or a refrigerant is circulated, and fins 2 are projectingly provided on this pipe.
The air flowing through the heat exchanger is brought into contact with the outer peripheral surface of the pipe and the fins to perform the required heat exchange.

An upper frame 4 is provided on the upper surface of the heat exchanger 1 and a lower frame 3 is provided on the lower surface thereof to be integrated, and the lower frame 3 has a concave surface as shown in detail in FIGS. The parts 3a, 3a are formed. The concave portion 3a is formed over substantially the entire width of the heat exchanger 1 in the lateral direction, and when condensed water is dropped through fins or the like, it is surely guided to the concave portion 3a of the lower frame, and its position Determine. For example, two concave surface portions 3a, 3a are provided in parallel along the downwind side and the downwind side of the fin 2. Then, one or two or more drain holes 3H are bored in the concave portion 3a.

Further, the drain hole 3H may be formed not only in the concave surface portion 3a but also in the flat surface portion between the parallel concave surface portions 3a and 3a.

When the heat exchanger 1 is used as a one-stage type, the inner bottom surface of the concave portion 3a is inclined and a drain hose is connected to the lower side so as to lead it to the outside, or the heat is discharged from each drain hole 3H. The water is drained to the outside by dropping it on a drain pan 8 arranged below the exchanger 1.

Further, as shown in FIG. 1, when the heat exchangers are stacked in upper and lower two stages, the lower frame 3 on the upper stage and the upper frame 4 on the lower stage are vertically stacked, and the drain holes 4H are also formed on the upper frame. Perforate,
As a result, the condensed water accumulated in the concave portion of the lower frame on the upper stage side is guided into the upper frame on the lower stage side through the drain holes 3H, and then the drain holes 4
The water is discharged to the heat exchanger side below H.

When the drain pan 8 is omitted, the lower frame 3
Is also used as a drain pan. In this case, as shown in FIGS. 3 and 4, the inner bottom surface of the concave surface portion is inclined, a drain hole is drilled in the lowest portion, and drainage is performed. At this time, the drain hole 3H is omitted.

[0013]

The heat exchanger in the air conditioner of the present invention comprises:
A concave part is formed on the lower frame of the heat exchanger over its entire width, and a drain hole is drilled in this concave part so that the condensed water is collected in the lower frame. Therefore, there is an advantage that it is not drained to the outside, scattered in the air conditioner, or sucked into the blower.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a heat exchanger in an air conditioner of the present invention.

FIG. 2 is a plan view of a heat exchanger bottom frame.

FIG. 3 is a sectional view of a different embodiment.

FIG. 4 is a sectional view of the different embodiment.

FIG. 5 is an explanatory diagram of a known example.

[Explanation of symbols]

 1 heat exchanger 2 fins 3 lower frame 3a concave part 3H drain hole 4 upper frame

Claims (1)

[Claims] 1. A lower surface of the heat exchanger is formed with a concave portion over the entire width thereof, and a drain hole is formed in the concave portion so that condensed water is drained without being scattered into the air conditioner. A heat exchanger in an air conditioner.