JPH0434329Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an air conditioner used as a cooler, etc., and more specifically, an air conditioner equipped with a drain pan to receive drain water generated during heat exchange. Regarding the harmonizer.

(Prior art) Fig. 5 shows an indoor unit of an air conditioner equipped with a conventional drain water discharge means, and Fig. 6 is a sectional view taken along the line I-I in Fig. 5 (actual). Kosho 58
−5861).

There, there is a heat exchanger 2 that exchanges heat with warm air A sucked by a fan 3, and a heat exchanger 2 that exchanges heat with warm air A sucked by a fan 3.
It has a basic configuration including a drain pan 1 which is provided at the lower part of the heat exchanger 2 and receives the drain water D dripping from the heat exchanger 2 and guides it to the discharge port 32. To explain in more detail, this heat exchanger 2 is connected to a drain pan 1.
It is configured to be placed on three pedestals 30 provided on the bottom of the drain pan 1.
are arranged in series in the longitudinal direction, and furthermore, the ends 30a of each of these frames 30 on the drain port 32 side are tilted so as to be shifted toward the rear wall side of the drain pan 1, so that a plurality of frames are arranged between the frames 30. gaps 33, 33
By forming the drain water D, the drain water D can be easily drained without increasing the fluid resistance of the drain water D in the drain pan 1.

(Problems to be Solved by the Invention) However, in the case of the above conventional example, the bypass air E directly passes through the gaps 33, 33 with a small passage cross-sectional area.
33, the drain water D accumulated in the drain pan 1
The problem is that the surface is blown off, resulting in water splashing.

In order to completely prevent the occurrence of water splashing, there is no other way than to install a partition wall between the heat exchanger 2 and the drain pan 1 and substantially cut off the bypass air E. becomes worse.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioner that can suppress the occurrence of water splashing without impairing drainage of drain water.

(Means for solving the problem) The air conditioner according to the present invention includes a heat exchanger 20,
The air conditioner is provided with a drain pan 10 that is provided below the heat exchanger 20 and receives drain water D dripping from the heat exchanger 20, and the drain pan 10 is provided with a drain pan 10 that is provided along the heat exchanger 20. The heat exchanger 20 is provided with an inner drain groove 11a, an outer drain groove 11b, and a crank-shaped groove 12 communicating between the inner drain groove 11a and the outer drain groove 11b. The groove 12 is placed on a pair of embankments 123 that form the groove 12 .

(Function) Of the drain water D, the drain water D dripping into the inner drain groove 11a tends to move from the inside to the outside of the heat exchanger 20 due to the discharge force of the fan 40.
In this case, the drain water D flows through the inner drainage groove 11a, the first communication groove 122a, the central groove 121, and the second communication groove 1.
22b, and then the outer drainage groove 11b. Since each groove is formed in a crank shape, the drain water D flows toward the outer drain groove 11b while facing a certain degree of flow resistance.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the following explanation will be made regarding a recessed type air conditioner that is embedded in the ceiling T, but the present invention is not limited to this, and can be applied to other types of air conditioners such as wall-mounted type and stationary type. It can also be adapted to machines.

Fig. 1 is a plan view of a drain pan adopted in an air conditioner according to the present invention, Fig. 2 is a sectional view showing an example of an air conditioner according to the present invention, and Fig. 3 is a plan view of a drain pan adopted in an air conditioner according to the present invention. A schematic sectional view of the heat exchanger and the drain pan, and FIG. 4 is a plan view of the drain pan of the air conditioner according to the present invention.

The air conditioner according to the present invention includes a heat exchanger 20 that exchanges heat with warm air sucked by a fan 40.
and is provided at the bottom of this heat exchanger 20,
The basic configuration includes a drain pan 10 that receives drain water D dripping from a heat exchanger 20 and guides it to a discharge section 13.

The fan 40 is, for example, a turbo type fan that takes in warm primary air A into the air conditioner body and blows out the secondary air B cooled by the heat exchanger 20 to the outside of the air conditioner body. It is installed inside.

The heat exchanger 20 is, for example, a cross-fin coil type, and is formed into a substantially U-shape in plan view so as to surround the fan 40. This heat exchanger 20 forms a loop circuit for a refrigerant such as fluorocarbon with an outdoor unit (not shown), and cooling is performed by circulating the refrigerant through this loop circuit using a compressor or the like (not shown). be exposed. That is, warm primary air A is sucked into the air conditioner by the fan 40, and the primary air A is transferred to the heat exchanger 2.
While passing through zero, heat is exchanged and the air becomes cooled secondary air B, which is blown out to the outside of the air conditioner body. In the heat exchange process, the heat exchanger 2
Drain water D is generated on the surface of 0. This drain water D drips into the drain pan 10 provided at the bottom of the heat exchanger 20 by gravity.

The drain pan 10 is formed into a substantially rectangular thin plate shape when viewed from above, and the fan 40 is provided in the center of the drain pan 10.
An air intake port 14 is provided so that primary air A can be taken into the body of the air conditioner. This drain pan 10 is made of polystyrene foam or the like with excellent heat insulation effect, and the drain pan 10 has three drain grooves, namely, an inner drain groove 1
1a (upstream side of air flow) and outer drainage groove 11
b (on the downstream side of the air flow), and both drainage grooves 11a,
A central groove 121 between the grooves 11b and 11b is formed.
Both drain grooves 11a, 11b and the central groove 121 are separated by a pair of embankments 123,123. The heat exchanger 20 is placed on the pair of embankments 123 so as to close only the central groove 121. In addition, the inner drain groove 11a and the outer drain groove 1
1b is formed along the entire circumference of the heat exchanger 20, but the central groove 121 is not only formed along the entire circumference as shown in the figure, but also partially formed around the heat exchanger 20. It may be something.

Furthermore, a first communication groove 122a is formed between the inner drainage groove 11a and the central groove 121, and a second communication groove 122b is formed between the central groove 121 and the outer drainage groove 11b. ing. In this case, the first communication groove 122a and the second communication groove 122b are formed at positions shifted from each other. Therefore, the first communication groove 122a, the central groove 121, and the second communication groove 122b form a crank-shaped groove 12 that bridges between the inner drain groove 11a and the outer drain groove 11b.

In addition, as shown in Figure 2, the outer drainage ditch 1
1b is slightly deeper than the inner drainage groove 11a. This is the drain water D received in the inner drain groove 11a.
This is to make it easier to flow into the outer drain groove 11b.

Moreover, 13 is a drainage part provided at the end of the drain pan 10, and the drain pan 10 is attached so as to slope downward toward the drainage part 13 so that the drain water D flows down to the drainage part 13 side.

Therefore, the heat exchanger 20 is connected to the central groove 121.
It is installed on the drain pan 10 via a sealing material 21 so as to close only the drain pan from above.

Next, the operation of the air conditioner according to the present invention, particularly the discharge of drain water D, will be explained.

Among the drain water D generated on the surface of the heat exchanger 20 during the heat exchange process, the drain water D dripping into the outer drain groove 11b flows directly to the drain section 13 through the outer drain groove 11b. On the other hand, inside drain groove 1
The drain water D dripping into 1a is subjected to an outward force of the heat exchanger 20 due to the discharge force of the fan 40. That is, considering the U-shaped tip portion that is the most upstream side, a portion of the drain water D in the inner drain groove 11a flows into the central groove 121 through the first communication groove 122a. Some of the drain water D that has flowed into the central groove 121 flows directly through the central groove 121 toward the drainage section 13, but some of it flows into the second communication groove 122.
b, flows into the outer drain groove 11b, and heads toward the drain port 13 side. In this case, the pressure inside the heat exchanger 20 is higher than the pressure outside, so the drain water D
It acts to flow more downstream.

This drainage section 13 is provided with a discharge means such as a pump (not shown) to discharge the drain water D to the outside.

Moreover, although the heat exchanger 20 has been described as having a substantially U-shape in plan view, it goes without saying that it may have another shape.

(Effects of the invention) This invention has a structure in which a crank-shaped groove is formed between the outer drainage groove and the inner drainage groove so that they communicate with each other, so that the occurrence of water splashing due to air bypass is suppressed. In addition, drain water can be easily discharged.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a drain pan adopted in an air conditioner according to the present invention, Fig. 2 is a sectional view showing an example of an air conditioner according to the present invention, and Fig. 3 is a plan view of a drain pan adopted in an air conditioner according to the present invention. A schematic sectional view of a heat exchanger and a drain pan, FIG. 4 is a plan view of a drain pan of an air conditioner according to the present invention, and FIG. 5 shows an indoor air conditioner equipped with a conventional drain water discharge means. FIG. 6 is a sectional view taken along the line II in FIG. 5. 10...Drain pan, 11a...Inner drain groove,
11b...Outer drain groove, 12...Crank-shaped groove, 121...Central groove, 122a...First communication groove, 122b...Second communication groove, 20...Heat exchanger, D...Drain water.

Claims (1)

[Claims for Utility Model Registration] (1) An air conditioner comprising a heat exchanger 20 and a drain pan 10 that is provided at the bottom of the heat exchanger 20 and receives drain water D dripping from the heat exchanger 20. The drain pan 10 has an inner drain groove 11 provided along the heat exchanger 20.
a, the outer drain groove 11b, and the inner drain groove 1
A crank-shaped groove 12 that communicates between the outer drainage groove 1a and the outer drainage groove 11b is provided, and the heat exchanger 20 is placed on a pair of embankments 123, 123 forming the crank-shaped groove 12. An air conditioner characterized by: (2) The crank-shaped groove 12 has a central groove 121;
A first communication groove 122a that communicates between the central groove 121 and the inner drain groove 11a;
The air conditioner according to claim 1, which is a registered utility model, and includes a second communication groove 122b that communicates between the outer drainage grooves 11b. (3) The air conditioner according to claim 2, wherein the central groove 121 is provided along substantially the entire length of the heat exchanger 20. (4) The air conditioner according to claim 2, wherein the central groove 121 is provided along a part of the heat exchanger 20.