JP3308647B2 - 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, and more particularly to an air conditioner in which a drain pipe for discharging dew water generated in a cooling coil is eliminated.

[0002]

2. Description of the Related Art FIG.
This shows a refrigerant circulation multi-system (RCM), in which an indoor unit 13 incorporating a coil 11 serving as an evaporator during cooling and a condenser during heating is positioned upward.
Heat exchanger 1 that works as a condenser during cooling and as an evaporator during heating
Heat exchanger unit 19 incorporating 5 and circulation pump 17
Are arranged below, connected by pipes, and filled with a refrigerant that changes in gas-liquid phase.

In this system, at the time of cooling, as shown in FIG. 10, the refrigerant liquid is forcibly supplied to the indoor unit 13 using the circulation pump 17, and the refrigerant evaporated in the indoor unit 13 becomes gas, and the evaporation pressure and The heat is returned to the heat exchanger 15 of the heat exchange unit 19 by the differential pressure of the condensing pressure, and is exchanged with cold water to be condensed.

On the other hand, at the time of heating, as shown in FIG.
The pump 17 is stopped, the bypass valve 21 is opened, the refrigerant is circulated by natural circulation, and the refrigerant that has been heated and evaporated by the hot water in the heat exchanger 15 of the heat exchange unit 19 is condensed in the indoor unit 13, It is returned to the heat exchange unit 19 by its own weight.

In the above-described refrigerant circulation multi-system, since a refrigerant that changes in gas-liquid phase is used as a heat medium, a water leakage accident can be reliably prevented.

[0006]

However, in such a system, the coil 11 of the indoor unit 13 is
Since it is used as an evaporator and used as a cooling coil during cooling, there is a problem that dew condensation water is generated in the coil 11 during cooling.

Therefore, it is conceivable to provide a drain pipe in order to treat the dew water. However, in this case, the drain pipe may be clogged or deteriorated, so that sufficient reliability cannot always be obtained. There is a problem.

[0008] In addition, the provision of the drain pipe has many architectural restrictions, and there is a problem that the cost and the construction period increase. The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide an air conditioner that can reliably treat dew water generated in a cooling coil without providing a drain pipe.

[0009]

In the air conditioner of the present invention, first and second passages through which room air flows are formed adjacent to each other in a horizontal direction in an apparatus body, and the first passage is formed in the first passage. , a cooling coil for cooling the indoor air is disposed, before
The cooling coil is located below the cooling coil in the first passage.
Guide plate into which dew condensation water from
Inclined into the second passage so that the side is downward
The guide plate disposed in the second passage and extending in the second passage
When the dew water from the guide plate is absorbed in the tray part of
In addition, a pad through which the room air can pass is placed .

[0010]

According to the air conditioner of the present invention, the air conditioner is disposed in the first passage.
The condensation water generated in the cooling coil is discharged through the guide plate to the second
Of the guide plate located in the passage of
Accumulated condensation water section may be moisture in the pad, the inside of the pad increases due to the siphon phenomenon, the air flowing through the second passage is vaporized by passing through the pad.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first related art example of the air conditioner of the present invention. The air conditioner of this example has a sensible heat load such as device heat generation because a large number of OA devices and the like are installed indoors. It is mainly used for rooms that require cooling operation for many years.

In the drawing, reference numeral 31 indicates an apparatus main body. A partition plate 33 is disposed in a horizontal direction on the indoor air inflow side in the device main body 31, and a fan 35 is disposed on the indoor air outflow side.

A first passage 37 through which room air flows is formed above the partition plate 33, and a second passage 39 through which room air flows is formed below the partition plate 33. A cooling coil 41 for cooling room air is disposed in the first passage 37.

An evaporative cooler 43 is disposed below the cooling coil 41 in the second passage 39. The evaporative cooler 43 includes a pad 45 that absorbs dew condensation water and allows indoor air to pass through, and a tray 47 on which the pad 45 is placed.

The pad 45 is made of, for example, a glass fiber composite material and has a low pressure loss and a high saturation efficiency. A receiving portion 33a is formed below the cooling coil 41 of the partition plate 33, and a through hole 33b is formed in the center of the receiving portion 33a.

In the above-described air conditioner, the dew water W generated in the cooling coil 41 falls on the receiving portion 33a of the partition plate 33, passes through the through hole 33b, falls on the pad 45, and absorbs moisture. Then, the dew water W is vaporized by the air flowing through the second passage 39 passing through the inside of the pad 45.

The air containing the condensed water W is mixed with the air that has passed through the cooling coil 41 on the upstream side of the fan 35, and
Is discharged from

In the air conditioner described above, the first and second passages 37 and 39 through which room air flows are formed in the main body 31 and the room air is cooled in the first passage 37. Since the cooling coil 41 is disposed and the evaporative cooler 43 for evaporating the dew water W from the cooling coil 41 by the room air is disposed in the second passage 39, the dew water W generated in the cooling coil 41 is removed by the evaporative cooler. Led to 43,
Since the evaporative cooler 43 evaporates into the indoor air, it is possible to reliably treat the dew water W generated in the cooling coil 41 without providing a drain pipe.

Since the drain pipe becomes unnecessary, the cost can be reduced and the construction period can be shortened. Further, in the above-described air conditioner, since the first and second passages 37 and 39 through which room air flows are formed in the device main body 31, the amount of air flowing through the cooling coil 41 and the amount of air flowing through the pad 45 can be reliably determined. It can be distributed, and the dew condensation water W can be effectively vaporized.

That is, in order to effectively vaporize the dew condensation water W, the amount of air passing through the cooling coil 41 and the amount of the pad 4
It is necessary to accurately distribute the flow rate passing through the pad 45 and the flow rate passing through the pad 45 is approximately 10 to 30 of the total flow rate.
%, But by setting the first and second passages 37 and 39, the amount of air flowing to the cooling coil 41 and the amount of air flowing to the pad 45 outside the device can be easily and reliably distributed. Becomes possible.

It is to be noted that the first and second passages through which room air flows are provided.
When the passages 37 and 39 are not provided, the cooling coil 41
It is necessary to provide a predetermined resistance to the air and the pad 45 to distribute the air flow, and as a result, the resistance of the device may increase, and the performance of the cooling coil 41 and the pad 45 may decrease.

FIG. 2 shows a second related technique of the air conditioner of the present invention.
In this example , a fan 35 is disposed on the indoor air inflow side of the apparatus main body 31. This second function
Also in communicating art example, it is possible to obtain substantially the same effects as the first related art example, in this example, in that the room air is dehumidified supercooling removing a first association in which the indoor air is sensible heat It is different from the technical example.

FIG. 3 shows a third related technique of the air conditioner of the present invention .
In this example, the distal end of the partition plate 33 is bent toward the first passage 37 to form a bent portion 33a.

A partition plate 49 is disposed vertically at a predetermined distance from the bent portion 33a, and a downstream passage 39 of the second passage 39 is provided between the bent portion 33a and the partition plate 49.
a is formed.

A through hole 33b is formed in the bent portion 33a, and a disk-shaped pad 45a is inserted into the through hole 33b. The pad 45a is connected to the first and second passages 37 and 39.
Are arranged to straddle.

At the center of the pad 45a, a rotating shaft 51a of a motor 51 for rotating the pad 45a is fixed. A drain pan 53 is arranged below the cooling coil 41, and a through hole 53a is formed at a position above the pad 45a of the drain pan 53.

In the above-described air conditioner, the dew water W generated in the cooling coil 41 falls on the drain pan 53, passes through the through hole 53a, falls on the pad 45a, is absorbed by the pad 45a, and is absorbed by the pad 45a. Due to the rotation, the water is moved to the downstream passage 39a side of the second passage 39, and the air flowing through the downstream passage 39a passes through the inside of the pad 45a, so that the dew condensation water W is vaporized.

The air containing the vaporized dew water W is mixed with the air passing through the cooling coil 41 on the upstream side of the fan 35, and
Is discharged from

In the third related technique , the first
Almost the same effects as in the related art can be obtained. FIG.
And FIG. 6 shows the actual施例of the air conditioner of the present invention, in this embodiment, the air inflow side of the apparatus body 31, in the vertical direction and the partition plate 55 is disposed, the partition plate 5
5, a first passage 37 through which room air flows is formed, and a second passage 39 through which room air flows is formed on the other side.
Are formed.

A cooling coil 41 is disposed in the first passage 37, and an evaporative cooler 43 is disposed in the second passage 39. A drain pan 57 serving as a guide plate is disposed below the cooling coil 41, and the pad 45 is placed on a tray 59.

In this embodiment, as shown in FIG. 6, a drain pan 57 and a receiving tray 59 are integrally formed, and a partition plate 55 has a through hole 55 for allowing the dew condensation water W to pass therethrough.
a is formed.

In the above-described air conditioner, the condensed water W generated in the cooling coil 41 falls on the drain pan 57, passes through the through hole 55a formed in the lower part of the partition plate 55, flows into the receiving tray 59, and The dew water W is vaporized by the moisture absorbed by the pad 45 and rising inside the pad 45 due to the siphon phenomenon, and the air flowing through the second passage 39 passing through the pad 45.

The air containing the condensed dew water W is mixed with the air passing through the cooling coil 41 on the upstream side of the fan 35, and
Is discharged from

In this embodiment, substantially the same effects as those of the first related art can be obtained. However, in this embodiment, since the evaporative cooler 43 is arranged on the side of the cooling coil 41, the apparatus main body is provided. 31 can be reduced in the vertical direction.

FIG. 7 shows an air conditioner of the first related art example.
This shows an example in which it is arranged on a ceiling 61 of a building, and the apparatus main body 3
A suction duct 63 opening to the ceiling 61 is connected to the air inflow side of the air duct 1.

An outlet duct 65 opening to the ceiling 61 is connected to the air outlet side of the apparatus main body 31. Further, for example, a supply pipe 67 and a return pipe 69 for a refrigerant that undergoes a gas-liquid phase change are connected to the cooling coil 41.

In this example, room air is supplied from the suction duct 63 into the apparatus main body 31, passes through the apparatus main body 31, and is circulated from the outlet duct 65 into the room. FIG. 8 shows a first example in which the air conditioner of the second embodiment is arranged on a ceiling 61 of a building.
Only the first passage 37 in 1 is connected to the outlet duct 65.

The second passage 39 is opened at the back of the ceiling, and the air passing through the back of the ceiling is guided to the main air conditioner 71 together with the fresh outside air A, and is cooled by the cooling coil 71a of the main air conditioner 71. After being dehumidified, the air is supplied to the room again by the air supply duct 73.

FIG. 9 shows an air conditioner of a second related art example.
This shows a second example in which the air is passed on the ceiling 61 of a building. In this example, air passing through the ceiling is exhausted to the outside by an exhaust fan 75 arranged behind the ceiling.

In general, a drain pipe is unnecessary in an air conditioner for sensible heat treatment because no dew condensation water is generated. Or human beings,
Since there is a possibility that dew condensation water may be generated due to indoor latent heat such as intrusion of outside air or use of steam of internal equipment, in consideration of this possibility, wasteful equipment which is actually used very rarely is considered. Is provided.

Therefore, even in such an air conditioning apparatus for sensible heat treatment, by adopting the configuration as in the present invention, even if dew water is generated by any chance, the dew water can be absorbed by the pad. Therefore, drain piping can be eliminated.

[0042]

As described above, in the air conditioner according to the present invention, the first and second airflows through which the room air flows in the main body of the air conditioner.
Are formed adjacent to each other in the horizontal direction, and a cooling coil for cooling room air is disposed in the first passage .
Condensation water from the cooling coil below the cooling coil in the passage
Guide plate on which the second passage is located downward.
Extending in the second passage at an angle to the second passage;
Dew condensation from the guide plate on the pan of the guide plate
A pad that absorbs moisture and allows indoor air to pass
Having location, Ru can be processed reliably dew condensation water generated in the cooling coil without providing the drain pipe. Then, the first and second passages through which the room air flows in the apparatus main body.
Are formed horizontally adjacent to each other.
It is possible to shorten the length in the vertical direction, such as in the ceiling
Can be housed compactly.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first related art example of an air conditioner of the present invention.

FIG. 2 is a sectional view showing a second related art example of the air conditioner of the present invention.

FIG. 3 is a sectional view showing a third related art example of the air conditioner of the present invention .

It is a cross-sectional view showing the actual施例of the air conditioner of the present invention; FIG.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4;

FIG. 7 is an explanatory diagram showing an example in which the air conditioner of the first related art example is arranged behind a ceiling of a building.

FIG. 8 is an explanatory diagram showing a first example in which the air conditioner of the second related art example is arranged behind a ceiling of a building.

FIG. 9 is an explanatory diagram showing a second example in which the air conditioner of the second related art example is arranged behind a ceiling of a building.

FIG. 10 is a piping diagram showing a refrigerant circulation multi-system developed earlier by the present applicant.

FIG. 11 is a piping diagram showing a refrigerant circulation multi-system developed earlier by the present applicant.

[Explanation of symbols]

 31 apparatus main body 33, 55 partition plate 35 fan 37 first passage 39 second passage 41 cooling coil 43 evaporative cooler 45 pad W dew water

Continuation of the front page (56) References JP-A-3-91627 (JP, A) JP-A-62-49137 (JP, A) JP-A-63-104922 (JP, U) JP-A-60-33138 (JP, A) , U) Fully open 1986-63624 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 1/00 361 F24F 1/00 331 F24F 6/04

Claims (1)

(57) [Claims] 1. A first device through which room air flows in an apparatus main body.
And a second passage is formed adjacent to the horizontal direction, and a cooling coil for cooling the room air is disposed in the first passage, and a cooling coil is provided below the cooling coil in the first passage.
A guide plate on which dew condensation water from the cooling coil is dropped
Is inclined such that the second passage side faces downward.
Extending into the second passage, extending into the second passage;
The receiving plate of the guide plate
A package that absorbs dew water and allows the indoor air to pass through.
An air conditioner characterized by mounting a computer.