JP3223089B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a structure in which a heat exchanger is divided and mounted before and after a blower fan in order to enhance the heat exchange capacity, and more particularly, to such a heat exchanger which is spatially separated. The present invention relates to an air conditioner having a drain water drainage structure suitable for draining drain water from a vessel.

[0002]

2. Description of the Related Art In an air conditioner separated into an outdoor unit and an indoor unit, the structure of the indoor unit generally has an air inlet formed from the front surface to the upper portion, and the air that has been sucked and exchanged heat is directed obliquely downward. It has an air outlet that blows out, and a heat exchanger and a blower fan are arranged in that order in an air passage formed inside so as to connect the air inlet and the air outlet. Here, the heat exchanger located at the back position of the air inlet, so as to take a lot of heat exchange area with suction air in all directions,
In many cases, the fan is formed in a character shape that does not cover the front and upper parts of the blower fan.

Conventionally, a single heat exchanger having this shape is often mounted. However, in recent years, in order to increase the heat exchange capacity while reducing the thickness of the indoor unit, the main heat exchanger is used. In addition to the first heat exchanger, another second heat exchanger is disposed behind the blower fan, and the first heat exchanger and the second heat exchanger are formed in two parts so as to sandwich the blower fan. It is configured so as to be surrounded by a heat exchanger so that the wind sucked by the blower fan can be effectively used for the heat exchange action without waste.

By the way, when the air conditioner is operated,
It is necessary to treat the drain water generated in the heat exchanger, but a general treatment method is to provide a drain pan that receives the drain water dropped from the heat exchanger, and discharge the drain water collected in the drain pan with a drain hose. I have.

Therefore, even in the case of an indoor unit equipped with the two heat exchangers described above, the first heat exchanger having a large heat exchange area and a large amount of drain water has conventionally had a sufficient depth below the first heat exchanger. A drain pan for the first heat exchanger having a shape capable of storing a large amount of drain water is provided. On the other hand, as for the second heat exchanger located at the rear part of the unit internal space, the heat exchange capacity is small and the amount of generated drain water is expected to be small. At present, it is sufficient to arrange a drain pan having a simple shape without consideration (for example, a V-shaped groove shape).

[0006]

However, although the amount of drain water is small, the drain water treatment for the second heat exchanger is not performed by a conventional drain pan having a V-shaped groove shape and taking into account the storage amount. If the drain pan is clogged with the generation of drain scale such as dust or dirt, the drainage will be incomplete, and if it collects too much, there will be mold and other problems that may cause unsanitary air to be discharged. .

[0007] In addition, simply arranging a drain pan below the second heat exchanger requires a drain water hose for drainage.
There were also problems such as difficulty in the work of piping in the interior of the unit, which was difficult to reach, and the problem of remaining structural complexity.

The present invention has been made in view of the above points, and has a second rear heat exchanger opposed to a first heat exchanger.
To provide an air conditioner in which drain water from a heat exchanger is guided to a drain pan of a first heat exchanger and drained in a centralized manner so that drain water can be drained reliably and smoothly. With the goal.

[0009]

[0010]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a system in which room air is blown by a blower fan provided in an air passage formed in a main body connecting an air inlet and an air outlet. The first heat exchanger is configured to discharge heat from the air discharge port after being heat-exchanged with the heat exchanger disposed at the rear position of the air suction port, and to sandwich the heat exchanger with the blower fan. An air conditioner divided into a second heat exchanger and a first drain pan provided along a lower longitudinal direction of the first heat exchanger and receiving drain water dropped from the first heat exchanger; A second drain pan that is provided along the lower longitudinal direction of the second heat exchanger and that is configured by an inverted trapezoidal container that receives drain water dropped from the second heat exchanger; At least near both ends and near the center A plurality of drain water outlets for draining the drain water in the drain pan downward, and a drain disposed at a position higher than the first drain pan and falling from the drain pan opposite to the drain water outlet of the second drain pan It has a mountain-like configuration that contains water and has a slightly raised central part and a downward slope extending from its apex to both ends, and at both ends in the longitudinal direction of the drain water guide path that collects drain water at both ends. And a drain water introducing tub for guiding the collected drain water to the first drain pan.

Further, according to a second aspect of the present invention, the apex portion of the mountain-shaped drain water guideway is provided at a position near the center of the bottom surface of the second drain pan with respect to a drain water drop port.
The first drain pan is located away from the drain hose at the normal position attached to one end of the first drain pan.

[0012]

Further, in the invention according to claim 3, the guide path for drain water is arranged outside the air path.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional side view showing the internal structure of an indoor unit. In FIG. 1, reference numeral 1 denotes a main body of a horizontally long indoor unit 10;
a and a rear case portion 1b. Air inlets 3, 3 are formed on the front and upper portions of the front case portion 1a, and an air outlet 4 is formed diagonally below the front case portion 1a. Reference numeral 5 denotes a suction port protection guard formed of a number of horizontal slits, and is attached to the air suction port 3. 6
Is a detachable deodorizing filter disposed at the front of a first heat exchanger described later. Reference numeral 7 denotes a plurality of wind direction plates attached to the air outlet 4 by a support shaft 8, which is vertically oscillated by a motor 9 to adjust the blowing direction of the discharge air.

Reference numeral 11 denotes a curved air path formed inside the main body 1 so as to connect the air inlet 3 and the air outlet 4. As a member for forming the curved air path 11, a curved air path forming rear plate 12 is formed integrally with the rear case portion 1b of the main body 1. In addition, the auxiliary refrigerant pipe 14 and the drain hose 15 can be accommodated at the time of shipment by utilizing a concave space at the back of the curved air path forming rear plate 12. 16
Is a blower fan arranged in the air passage 11, which when rotated rotates draws indoor air from the air inlet 3 and generates a circulating airflow as shown by an arrow blown out from the air outlet 4. 1
Reference numeral 7 denotes a first heat exchanger disposed at a back position near the air suction port 3, which has a well-known configuration in which a refrigerant pipe 19 meanders and penetrates a number of heat exchange fins arranged in a row. 1) The heat exchanger 17 is formed in a shape that does not cover the front and upper sides of the blower fan 16 so as to face all the air suction ports 3 formed from the front surface to the upper portion. Sufficient heat exchange with the air sucked from the air is performed.

Reference numeral 21 denotes a second heat exchanger, which has a structure in which the first heat exchanger 17 is disposed on the front side of the indoor unit 10.
Since the space S is opened above the blower fan 16 behind the first heat exchanger 17, the second heat exchanger 21 is inclined and arranged face-to-face as if it forms a roof with the first heat exchanger 17, The air that has passed through the first heat exchanger 17 is not diffused, is again exchanged with the second heat exchanger 21, and forms a closed space where the air is smoothly sucked into the air passage 11. Heat is exchanged without wasting air to enhance heat exchange performance. However, the second heat exchanger 21 is smaller than the first heat exchanger 17 and has a smaller heat exchange capacity.

Reference numeral 22 denotes a first drain pan for receiving drain water that is condensed on the first heat exchanger 17 and drops.
It is formed into a box-shaped container with sheet metal or resin, and has a depth sufficient to store and retain the drain water and a depth width at the bottom surface. The first heat exchanger 17 is installed so as to extend in the longitudinal direction along the lower part of the first heat exchanger 17 such that the lower end of the first heat exchanger 17 is deeply inserted. Further, the first drain pan 22 is provided with a drain hose 15 for draining drain water, for example, at the left end (the left side in FIG. 2) which is a normal use position. Depending on the situation at the installation location 10, the drain 10 can be replaced on the right side (the right side in FIG. 2) of the first drain pan 22 so that drainage from the opposite side is also possible.

Reference numeral 23 denotes a second drain pan provided along the lower longitudinal direction of the second heat exchanger 21 for receiving drain water that is condensed and drops on the second heat exchanger 21 and has a conventional V-shaped groove. The container is formed in a container having a groove 24 having an inverted trapezoidal cross-sectional shape so that the drain water can be more sufficiently stored than the drain pan having the groove. The second drain pan 23 is formed integrally with the rear case portion 1b on the upper back side of the rear plate 12 for forming an air passage. This second
On the bottom surface of the drain pan 23, as shown in FIG. 2, which is a view of the rear case 1b viewed from the rear side, in order to allow the received drain water to fall down, as shown in FIG. At the drain water drop ports 26, 2
6, 25 are provided, and a total of three drain outlets are provided. In the case where there are only two drain water outlets at both ends, the drain outlets have a small hole area, so they may be blocked by the generation of drain scale and the drainage will be worse, but it will be easy for the drain 3 with drain outlet 25
When two drain water outlets are provided, even if a part of the drain water outlets is blocked, the drainage capacity does not decrease so much, which is more secure.

The second drain pan 23 is also installed with the lower end of the second heat exchanger 21 inserted. However, the second heat exchanger 21 and the second drain pan 23 are mounted so as to be separated from each other so that a gap 20 is formed between one side wall of the second drain pan 23, that is, the front side wall 23B near the blower fan 16. By doing so, the second heat exchanger 21 is separated from the first heat exchanger 17 as compared with the case where the lower end portion of the second heat exchanger 21 is provided in contact with the second drain pan 23, and the first heat exchanger 17 When the air passing through the first heat exchanger 17 enters the widened space P, the flow velocity decreases and the impact on the second heat exchanger 21 is reduced, and the noise P is reduced. Along with the reduction effect,
The turbulence is suppressed and the heat exchange air is smoothly blown out to improve the ventilation, and the effect of improving the heat exchange rate can be expected.

The drain water outlet 25 at the center of the second drain pan 23 and the drain water outlets 26, 26 at both ends.
1 and 3 below the second drain pan 23 and on the back of the air path forming rear plate 12 of the rear case portion 1b in order to receive the drain water that has flowed down and flow to both longitudinal end portions. As shown in FIG. 2, a V-shaped groove 27 is formed by integrally projecting the bottom wall slightly upward, and as shown in FIG. A drain water guide path 28 having a chevron shape to be collected at both ends in the longitudinal direction is integrally formed. Further, in order to guide the drain water that has flowed and collected at both ends in the longitudinal direction (left and right direction) of the drain water guide path 28 into the first drain pan 22 located in front of the drain water guide path 28, as shown in FIG. The gutter portion 29 extends forward and is formed integrally on both sides of the drain water guide path 28. Accordingly, by disposing a drainage member in which the drain water guide path 28 and the drain water introduction gutter 29 are integrally formed below the second drain pan 23, the drain water from the second heat exchanger 21 is discharged. Is formed in the first drain pan 22.

When the air conditioner is operated, the compressor in the outdoor unit is driven, and the blower fan 16 in the indoor unit 1 is rotated, the air is discharged from the air inlet 3. And the air is exchanged with the first heat exchanger 17 and the second heat exchanger 21 and blown out from the air outlet 4. As the operation progresses, moisture contained in the air comes into contact with the low-temperature first heat exchanger 17 to form dew,
The dropped drain water accumulates in the first drain pan 22 and is drained by the drain hose 15. On the other hand, when the drain water condensed on the second heat exchanger 21 drops, the second drain pan 2
Received at 3. The drain water received by the second drain pan 23 is provided at three drain water outlets 2 at the center and both ends.
After falling from 5, 26, 26, it flows down the left and right along the drain water guide path 28 with a slope, and when it reaches both ends, it is guided to the first drain pan 22 by the drain water introduction gutter 29 on the left and right, The water is concentrated and stored together with the drain water from the first heat exchanger 17. The drain water collected in the first drain pan 22 is drained to the outside by the drain hose 15.

As described above, the second drain pan 23 formed in a form in which the amount of stored drain water is increased and the drain water dropped from the plurality of drain water falling ports provided on the bottom surface of the second drain pan 23 are received and left and right. Drain water guide 28 with a gradient that allows it to flow quickly to both ends of the
8 is provided with a drain water drainage device composed of drain water introduction gutters 29 on both sides for reliably guiding the drain water collected at both ends of the second heat exchanger 8 to the second heat exchanger. Drain water from 21 is drained easily and in a short time, and the drainage effect can be improved. In addition, dust (drain water scale) and the like in the conventional drain pan are clogged with water, resulting in insufficient drainage and mold generation. The problem which becomes unsanitary by doing can be solved.

As shown in FIG. 2, the mountain-shaped drain water guide path 28 has its apex M at a position on the right side of the central drain water drop port 25 provided in the second drain pan 23. And the central drain water outlet 2
The drain water that has fallen from 5 is flowing to the left. This is because the drain hose 15 is usually attached to the left side and used.
This is because the flow is made to the left close to the drain hose 15 rather than to the right, which is far from the drain hose 25, and it is advantageous to make the treatment path shorter and perform the wastewater treatment quickly.

[0025]

As described above, according to the first aspect of the present invention, the drain water from the second heat exchanger provided at the rear corresponding to the first heat exchanger at the front in the indoor unit is also provided at the lower part thereof. Of the second drain pan, and further received from a plurality of drain water outlets on the bottom surface of the lower drain water guideway disposed below and drained so as to quickly collect at both ends thereof, and to introduce drain water on both sides. Since the water is collected in the first drain pan corresponding to the first heat exchanger in the tub section, the drain water can be drained reliably and easily in a short time. In addition, as in the past, simply draining from the open ports at both ends and using a drain pan with a small storage capacity caused poor drainage due to clogging of trash etc. There is no problem that blows out. In addition, since the second drain pan is configured as an inverted trapezoidal container, the amount of drain water is increased so that it can be used for long-term use, and furthermore, the drain water is dropped so that the received drain water can be quickly dropped. By providing a drop at least near the center and near the left and right ends, and having these multiple drain drops, drainage can be secured even if part of the drain water drop is blocked, so that drainage is more secure. The operability is improved and the usability is also improved.

[0026]

Further, according to the second aspect of the present invention, the central drain water drop port is shifted from the top of the mountain-shaped drain water guide path, and the drain water dropped from the central drain water drop port is in the normal mounting position. Since the water is made to flow to the side closer to the drain hose on the side, the drainage path is shortened and drainage is improved.

[0028]

According to the third aspect of the present invention, the drain water from the second heat exchanger is reliably drained to the outside by the drain water guideway outside the air passage, so that the drain water is discharged into the air passage. There is no need to worry about infiltrating into the airway with the dirt.

[Brief description of the drawings]

FIG. 1 is a schematic central longitudinal sectional view showing the internal structure of an indoor unit in an air conditioner of the present invention.

FIG. 2 is a rear view of the indoor unit as viewed from the direction of arrow B in FIG. 1;

FIG. 3 is a sectional view taken along the line CC in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Main body 3 Air inlet 4 Air outlet 11 Air path 12 Rear plate for air path formation 15 Drain hose 16 Blow fan 17 First heat exchanger 21 Second heat exchanger 22 First drain pan 23 Second drain pan 25 , 26, 26 Drain water fall port 28 Drain water guideway 29 Gutter for drain water introduction

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsetsu Uchiyama 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-6-257778 (JP, A) JP 7-208757 (JP, A) JP-A-3-152318 (JP, A) JP-A 4-106424 (JP, U) JP-A 5-252214 (JP, U) (58) Fields surveyed ( Int.Cl. ⁷ , DB name) F24F 1/00 361

Claims (3)

(57) [Claims] An indoor air is heat-exchanged with a heat exchanger disposed at a rear position of the air suction port by a blower fan provided in an air passage formed inside a main body connecting the air suction port and the air discharge port. In the air conditioner configured to be discharged from the air discharge port after being performed, the heat exchanger is divided into a first heat exchanger and a second heat exchanger so as to sandwich the blower fan, A first drain pan that is provided along a lower longitudinal direction of the first heat exchanger and receives drain water dropped from the first heat exchanger; and a first drain pan that is provided along a lower longitudinal direction of the second heat exchanger. A second drain pan composed of an inverted trapezoidal container for receiving drain water dropped from the second heat exchanger;
A plurality of drain water outlets provided at least in the vicinity of both ends and the center of the bottom surface of the drain pan to drop the drain water in the drain pan downward, and disposed at a position higher than the first drain pan, and the drain water of the second drain pan The drain water that falls from this drain pan is stored facing the drop opening, and has a mountain-like configuration that is slightly elevated at the approximate center and extends down from the apex to both ends to drain water to both ends. An air conditioner comprising: a drain water introducing tub that guides drain water collected at both longitudinal ends of a drain water guide path to be collected to a first drain pan. 2. A top portion of the mountain-shaped drain water guide path is attached to one end of the first drain pan with respect to a drain water drop port provided near a center of a bottom surface of the second drain pan. 2. The system according to claim 1, wherein the drain hose is located far from the drain hose at the normal position.
The air conditioner as described. 3. The air conditioner according to claim 1, wherein the drain water guide path is disposed outside the air path.