JPH0571749A - Drain disposal device of air-conditioner - Google Patents

Abstract

PURPOSE:To prevent erroneous operation of a drain pump and stably, properly operate the drain pump. CONSTITUTION:A drain disposal device of an air-conditioner includes a drain pump 25 which discharges drain water W that gathers on a drain pan 24, and a float switch 26 that detects the level of the drain water W and brings the drain pump 25 into operation. The inside of the drain pan 24 is divided by a partition plate 41 into a pump side section A and a float side section B, and the pump side section A communicates with the float side section B through a communication path 42 so that the water in the sections A and B is kept at the same level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain treatment device for an air conditioner, and more particularly to an air conditioner capable of preventing a malfunction of a float switch for driving a drain pump and operating the drain pump stably and properly. The present invention relates to a drain processing device.

[0002]

2. Description of the Related Art Generally, an air conditioner is provided with a drain treatment device for discharging drain water dripping from a heat exchanger to the outside. In recent years, however, the installation location of the air conditioner has been diversified. Even for models that did not require the installation of a drain water discharge pump, the drain water discharge pump is now required to be installed separately.

[0003]

In order for the drain pump to always operate normally, a float switch that detects the drain discharge liquid level and drives the drain pump is required.
It is required to be installed near the drain pump. In this case, when considering the workability of the model in which the drain pump is installed as an option, since the structural system tends to be closed, the drain immediately after the drain pump is stopped is affected by the disturbance due to the return water. There was a problem that the structure was easy and caused the malfunction of the drain pump. That is, since the drain water once discharged upward returns to the drain pump tray immediately after the pump is stopped, the liquid level in the drain pump tray swells,
The drain discharge level becomes unstable.

The present invention was devised to effectively solve the above problems.

The present invention prevents malfunction of the drain pump,
An object of the present invention is to provide a drain treatment device for an air conditioner, which enables stable and appropriate operation of the drain pump.

[0006]

DISCLOSURE OF THE INVENTION The present invention relates to an air conditioner having a drain pump for discharging drain water stored in a drain pump tray and a float switch for detecting the drain discharge liquid level and driving the pump. In the drain treatment device, the inside of the tray is divided into the pump side and the float side by a partition plate, and the pump side and the float side are connected by a communication part for keeping both liquid levels the same. is there.

[0007]

In this way, since the inside of the tray is partitioned while the pump side and the float side are held at the same liquid level, the liquid surface on the float side can be held stationary. Therefore, the drain discharge liquid level can be accurately detected, and the drain pump can be operated stably and appropriately.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

3 and 4 show, for example, a ceiling suspension type air conditioner. As shown in the figure, the air conditioner main body 1 is provided with an upper decorative plate 2 on the upper front surface and right side plates 3 and left side plates 4 on the side surfaces. A blower (sirocco fan) 5 is provided inside the air conditioner body 1, and a suction grill 6 is provided on the suction port side of the blower 5.
And a heat exchanger 7 and a blowout grill 8 are provided on the outlet side. Below the heat exchanger 7, a foaming resin drain tray 9 for collecting drain water is provided. The drain tray 9 has a storage section 1 for storing drain water.
1 is formed, and a lower decorative plate 12 is arranged below the drain tray 9. The lower decorative plate 12 is folded back along the bottom of the drain tray 9 and attached. That is, as shown in FIG. 5, an engaging groove 13 is formed in the front portion 9a of the drain tray 9 in the longitudinal direction, and the front side portion 12a of the lower decorative plate 12 is inserted into the engaging groove 13 and mounted. Has been done.

Further, a vinyl chloride makeup cover 14 is attached to the front upper portion 9b of the drain tray 9 so as to cover it, and the makeup cover 14 is folded back along the front upper portion 9b of the drain tray 9 to the front side. The portion 14a is the front portion 9 of the drain tray 9.
The rear side portion 14b is inserted into the engagement groove 13 formed in a and the rear side portion 14b is folded and mounted in the storage portion 11 of the drain tray 9. As shown in FIGS. 5 and 6, linear engagement protrusions 14 c to 14 g are formed on the contact surface of the folded decorative cover 14 along the longitudinal direction, and the engagement groove 13 formed in the drain tray 9 is formed. The engaging projection 14c is provided inside, the engaging projection 14d is provided at the front portion 9a of the drain tray 9, and the front upper portion 9 of the drain tray 9 is provided.
Two engaging protrusions 14e and 14f are engaged with b, and an engaging protrusion 14g is engaged with the inside of the reservoir 11. In order to ensure the mounting of the decorative cover 14, the front side portion 14a of the decorative cover 14 inserted into the engaging groove 13 is folded back at an angle smaller than the angle formed by the front surface portion 9a of the drain tray 9 and the engaging groove 13. Has been.

By attaching the decorative cover 14 thus formed to the drain tray 9, the front portion 9 of the drain tray 9 is attached.
Compared to the case where the coating treatment or the flocking sheet attaching treatment is applied to a, the cost is lower, damage to the drain tray 9 can be prevented, and the drain tray 9 can be attached by one-touch operation, so that it is excellent in attachment. Further, since the folding angle of the front side portion 14a of the decorative cover 14 is made small, it does not fall off, and an adhesive means or a tape stopper for preventing the fall off is unnecessary. Furthermore, since the projections 14c to 14g are provided on the contact surface of the decorative cover 14, it is possible to prevent the generation of a creaking noise due to expansion and contraction.

As shown in FIGS. 1 and 4, the drain tray 9
A drain pump kid 23 for discharging drain water is connected to the drain pump 21 via a drain port 21 and a connection hose 22, and the drain pump kid 23 stores the drain water and a drain pump tray 24 for temporarily storing the drain water. A drain pump 25 for pumping up and discharging, and a float switch 2 for detecting the drain drainage liquid level and driving the drain pump 25
It is mainly composed of 6 and 6. A pump case 27 is attached to the drain pump tray 24 opened upward so as to cover the opening thereof with a screw 28, and the drain pump 25 is attached in the pump case 27 by a mount 29.
And the float switch 26 are vibration-proof fixed. The drain pump 25 has a suction port 25a which is immersed in drain water.
And a connection hose 31 and an external connection hose 32 for discharging drain water upward are connected.

In particular, the drain pump tray 24 is provided with a partition plate 41 for partitioning the drain pump tray 24 into a pump side A and a float side B, and a communicating portion 42 for keeping the pump side A and the float side B at the same liquid level. Be communicated with. That is, as shown in FIGS. 1 and 2, the tray 24 is provided with a partition plate 41 between the drain pump 25 and the float switch 26, and as shown in FIG.
Partition the saucer 24 with a gap (slit) forming the communication part 42 from one of the side plates 24a, 24b of the saucer 24 facing each other, and at the same time, the saucer 24
It is arranged so as to partition the flow direction of drain water flowing inward into front and rear. Specifically, the height of the partition plate 41 is set to the same height as the operating position of the float switch 26, and the size of the gap forming the communication portion 42 is set to about 10% of the area of the partition plate 41. . As shown in the drawing, the partition plate 4 is provided on the upstream side of the drain pump 25 separately with a gap.
It is also possible to provide 3 and the communication part 44. In FIG. 2, it is a 45 net, and this net 45 is a drain tray 9
This is to prevent dust from flowing into the tray 24 from.

Next, the operation of the above embodiment will be described.

As shown in FIG. 1, the drain water W (shown by a white arrow in the figure) from the drain tray 9 into the drain pump tray 25.
Flows in. The drain water W bypasses the partition plate 43 located on the upstream side and flows from the communication section 44 to the pump side A, and further bypasses the partition plate 41 located on the downstream side to pass through the communication section 42. Flow into the float side B. Even if there is momentum in the flow of the drain water W, that momentum is removed when bypassing the partition plates 41, 43, so the liquid surface on the float side B is held stationary.

When the float switch 26 detects that the drain water W that has flowed into the tray 24 has reached a predetermined drainage level to be drained, the drain pump 2 is detected by the detection signal.
5 is driven. The drain water W drawn up by the drain pump 25 is discharged as drainage through the connection hose 31 and the external connection hose 32. When the drive of the drain pump 25 is stopped because a predetermined amount of drain water W is discharged, the drain water X (shown by a black arrow in the figure) remaining in the connection hose 31 immediately returns to the back via the drain pump 25. Therefore, the liquid surface on the pump side A becomes wavy, but the waviness is caused by the partition plate 41 located on the downstream side.
It is blocked by and blocked from being transmitted to the float side B. Therefore, the liquid level on the float side B is held stationary,
A stable water surface is formed, and the float switch 26 can properly detect the water level to be drained. Therefore, the drain pump 25 can be operated stably and appropriately.

As described above, according to the present invention, the drain pump tray 24 is partitioned into the pump side A and the float side B, and the pump side A and the float side B are connected by the communication portion 42. Since it is possible to keep the liquid surface of the stand still and prevent the malfunction of the float switch 26,
The drain pump 25 can be operated stably and appropriately.

The partition plate may be made of a punch metal or a wire net having a communicating portion with an opening ratio of 0.5 to 0,7.

[0019]

In summary, according to the present invention, since the drain pump tray is partitioned into the pump side and the float side and the pump side and the float side are communicated with each other by the communicating portion, the liquid surface on the float side is in a stationary state. The drain pump can be kept stable and the malfunction of the float switch can be prevented, so that the drain pump can be operated stably and appropriately.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a drain treatment device of an air conditioner of the present invention.

FIG. 2 is a perspective view showing a configuration of a drain pump tray shown in FIG.

FIG. 3 is a side sectional view showing the air conditioner of the present invention.

FIG. 4 is an assembly diagram showing the configuration of the air conditioner of the present invention.

FIG. 5 is an enlarged perspective view showing a configuration of a drain tray portion.

FIG. 6 is a diagram showing details of a makeup cover attached to the drain tray of FIG.

[Explanation of symbols]

 24 Drain pump pan 25 Drain pump 26 Float switch A Pump side B Float side 41 Partition plate 42 Communication section W Drain water

Claims (1)

[Claims] 1. A drain treatment device for an air conditioner, comprising: a drain pump for discharging drain water stored in a drain pump tray, and a float switch for driving the pump by detecting a drain discharge liquid level. While partitioning the inside into the pump side and the float side with a partition plate, the pump side and the float side are communicated with each other by a communicating portion for keeping both liquid levels the same. Drain processing device.