JPH0434340Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an air conditioner, and more specifically, to the structure of a drain pan in an air conditioner.

(Prior Art) For example, as shown in FIG. 4, there is a centrifugal fan 2', a heat exchanger 3' located on the suction side of the fan 2', and a dew condensation located on the blowing side of the fan 2'. In an outdoor unit of an air conditioner in which dew condensation parts such as a compressor 4' are disposed inside a casing 1', an integrated unit is provided below each of the above-mentioned devices to receive condensed water, etc. It has been conventional practice to arrange a drain pan 6'.

(Problem to be solved by the invention) In the case of the above structure, the increase in static pressure on the secondary side of the drain pan 6' (in other words, the fan outlet side) when the fan is started, causes the secondary side water level to rise. As a result, the drain water D' and wind accumulated on the secondary side may flow back to the primary side of the drain pan (in other words, the fan suction side). As a result, the drain water level on the primary side rises rapidly, and the water bubbles due to the turbulence of the water surface due to the headwind from the secondary side. death,
There was a problem of polluting the surrounding environment.

This invention was made in view of the above points,
The purpose is to prevent the backflow of drain water and wind from the secondary side to the primary side, and to allow the drain water on the secondary side to gradually flow out to the primary side.

(Means for solving the problem) In the present invention, as a means for solving the above problem, as shown in the drawing, a centrifugal fan 2
and a heat exchanger 3 located on the suction side of the fan 2.
and dew condensation parts such as a compressor 4 located on the blowing side of the fan 2 are arranged in the casing 1, and a drain pan 6 is arranged below each of the devices. A suction side drain receiving part 9 located on the suction side of the fan 2 and having a drain outlet 8, a blowing side drain receiving part 10, 10 located below the condensation component on the blowing side of the fan 2, and the blowing side It is constituted by narrow communication passages 11, 11 that communicate the drain receiving parts 10, 10 and the suction side drain receiving part 9, and the communication passages 11, 11 are provided with a water-absorbing member 14, such as a sponge, etc. 14 are installed.

(Function) In the present invention, the following effects can be obtained by the above means.

That is, even when the static pressure on the secondary side of the fan 2 increases during startup, etc., the suction side drain receiving part 9 (in other words, the primary side) and the blowing side drain receiving part 10, 10 of the drain pan 6 (in other words, the secondary side) are communicated with each other through narrow communication passages 11, 11, and a water-absorbing member such as a sponge is placed in the communication passages 11, 11.
4 and 14 are arranged, the backflow of drain water D and wind from the primary side to the secondary side is prevented, and the rapid rise of the primary side drain water surface and the bubbling of drain water due to head winds are prevented. be done. Moreover,
The drain water D accumulated on the secondary side is transferred to the communication passages 11, 11.
The drain water D gradually flows out to the primary side while penetrating the water absorbing members 14, 14, and the drain water D is smoothly discharged.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the attached FIGS. 1 to 3.

In this embodiment, an outdoor unit of an air conditioner will be explained as an example.

This outdoor unit includes a centrifugal fan 2, a heat exchanger 3 located on the suction side (in other words, the primary side) of the fan 2, and a heat exchanger 3 located on the blowing side (in other words, the secondary side) of the fan 2. ) A compressor 4 and an accumulator 5 are arranged in a casing 1, and a drain pan 6 for receiving drain water is arranged below each of the above-mentioned devices. In this embodiment, the compressor 4 and the accumulator 5
is the condensation part in the scope of the utility model registration claim. Reference numeral 7 denotes a partition plate that partitions the suction side and the blowout side of the fan 2 and also acts as a fixing plate for fixing the fan 2.

The drain pan 6 is located on the suction side of the fan 2 and is located below a suction side drain receiver 9 having a drain outlet 8, and a compressor 4 and an accumulator 5, which are dew condensation parts on the blowout side of the fan 2. It is constituted by outlet side drain receivers 10, 10, and narrow communication passages 11, 11 that communicate the outlet side drain receivers 10, 10 with the suction side drain receiver 9. These communication passages 11, 11
is formed on a raised portion 12 formed at a continuous portion of the drain pan 6 between the suction side drain receiving portion 9 and the blowing side drain receiving portions 10, 10 (see Fig. 2), and as shown in Fig. 3, The upper opening is covered with a sealing material 13 to form a tunnel shape. The raised portion 12 is formed over the entire lower portion of the fan 2, and is a portion where drain water is not stored.

A water-absorbing member 14 such as a sponge is partially disposed in each of the communication passages 11, and a minute passage 15 for overflow is formed in the water-absorbing member 14.

In the drawing, reference numeral 16 is a fan motor, 17 is a fixture for the fan motor 16, 18 is a switch box, 19 is an air inlet, and 20 is an air outlet.

Next, the operation of the illustrated outdoor unit will be explained.

In this outdoor unit, the air W sucked in from the air suction port 19 of the casing 1 by the drive of the fan 2 is heated (during cooling) or cooled (during heating) in the heat exchanger 3, and then the air W of the casing 1 is heated (during cooling) or cooled (during heating). Drain water that is blown out from the outlet 20 but has condensed on the heat exchanger 3, compressor 4, and accumulator 5, which act as an evaporator during heating, is stored in the drain pan 6. The drain water D stored in the outlet side drain receivers 10, 10 of the drain pan 6 is absorbed by the water absorbing member 14 provided in the tunnel-shaped communication passages 11, 11 and flows toward the suction side drain receiver 9. It is forced to flow out. In addition, when the water level of the drain water D in the blow-out side drain receiving parts 10, 10 becomes high, it is made to flow out to the suction side drain receiving part 9 via the minute passage 15 for overflow. Drain water D stored on the side of the suction-side drain receiver 9 is discharged to the outside from the drain outlet 8 via a hose (not shown) or the like.

Therefore, when the fan 2 is started, the static pressure on the blowout side (i.e., the secondary side) of the fan 2 increases, and this static pressure causes the drain water D stored in the blowout side receivers 10, 10 to rise. However, the rapid outflow of drain water D to the suction side drain receiver 9 is prevented by the narrow communication passages 11, 11 and the water absorbing members 14, 14 provided in each communication passage 11, 11. Therefore, the suction side drain receiving part 9
A sudden rise in the water surface of drain water D is suppressed. Further, the presence of the water absorbing members 14, 14 also prevents the wind from flowing backward from the blowout side to the suction side of the fan 2. Therefore, the bubbling of the drain water in the suction side drain receiving portion 9 is suppressed, and the scattering of water droplets from the fan 2 is prevented.

As described above, according to this embodiment, the drain water D and the backflow of wind from the blowing side of the fan 2 to the suction side are narrow in the communication passages 11, 11 and the water absorbing member 1.
4 and 14, the bubbling of the drain water D stored in the suction side drain receiver 9 is suppressed, and water droplets from the fan 2 are prevented from scattering.

It goes without saying that the present invention is not limited to the configuration of the above-described embodiments, and that the design can be modified as appropriate without departing from the gist of the invention.

(Effect of the invention) As described above, according to the invention, the centrifugal fan 2 and the heat exchanger 3 located on the suction side of the fan 2 are provided.
and dew condensation parts such as a compressor 4 located on the blowing side of the fan 2 are arranged in the casing 1, and a drain pan 6 is arranged below each of the devices. A suction side drain receiving part 9 located on the suction side of the fan 2 and having a drain outlet 8, a blowing side drain receiving part 10, 10 located below the condensation component on the blowing side of the fan 2, and the blowing side It is constituted by narrow communication passages 11, 11 that communicate the drain reception parts 10, 10 and the suction side drain reception part 9, and a water absorbent member 1 such as a sponge is provided in the communication passages 11, 11.
4 and 14, even if the static pressure on the secondary side (i.e., the blowing side) of the fan 2 increases during startup, etc., the existence of the narrow communication passages 11, 11 and the water absorbing member 1414 can be avoided. Therefore, the primary side (outlet side)
By preventing the backflow of drain water and wind from the suction side to the secondary side (suction side), the suction side drain receiving part 9
A sudden rise in the level of the drain water stored in the drain water surface and bubbling of the drain water due to head winds can be prevented, and there is a practical effect that the scattering of water droplets by the fan 2 can be prevented.

In addition, the drain water D accumulated in the outlet side drain receivers 10, 10 is removed from the water absorbing member 1 of the communication path 11, 11.
4, 14 and gradually penetrate into the suction side drain receiving part 9.
This also has the effect that drain water D can be smoothly discharged.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an air conditioner according to an embodiment of the present invention, FIG. 2 is a plan view of a drain pan in the air conditioner shown in FIG. 1, and FIG. 3 is an enlarged view of the main parts of FIG. FIG. 4 is a longitudinal sectional view of a conventional air conditioner. 1... Casing, 2... Fan, 3... Heat exchanger, 4... Compressor, 5... Accumulator, 6
...Drain pan, 8...Drain outlet, 9...Suction side drain receiver, 10...Blowout side drain receiver, 1
1... Communication path, 14... Water absorbing member.

Claims (1)

[Scope of utility model registration request] A centrifugal fan 2, a heat exchanger 3 located on the suction side of the fan 2, and dew condensation parts such as a compressor 4 located on the blowout side of the fan 2 are arranged in the casing 1, and each of the above-mentioned devices In an air conditioner in which a drain pan 6 is arranged below the drain pan 6, the drain pan 6 is connected to a suction side drain receiving part 9 which is located on the suction side of the fan 2 and has a drain outlet 8, and on the blowing side of the fan 2. Consisting of outlet-side drain receivers 10, 10 located below the condensation parts in and narrow communication passages 11, 11 that communicate the outlet-side drain receivers 10, 10 with the suction-side drain receiver 9. In addition, an air conditioner characterized in that water-absorbing members 14, 14 such as sponges are disposed in the communication paths 11, 11.