JP2022110597A - Air conditioning device - Google Patents

Abstract

To provide an air conditioning device capable of suppressing occurrence of water scattering from an air blowing port.SOLUTION: As a support holder 40 is provided with a gutter 47 inclined downward from a lower end of a wall portion of an insertion hole 42a corresponding to a hair pin portion 31 of an upper rear heat exchange unit 301 to a lower end of a wall portion of an insertion hole 42b corresponding to a hair pin portion 31 of an upper front heat exchange unit 302, drain water generated in the hair pin portion 31 of the upper rear heat exchange unit 301 can be guided to a drain channel 45 of the support holder 40 corresponding to the lower front heat exchange unit 303 by the gutter 47, when a refrigerant of low temperature is circulated in a heat transfer tube 32 constituting a heat exchanger 30 in executing a cooling operation and the like by the air conditioning device 10, thus the inner drain water does not attach to an inner side surface of the side plate 41 as the outer drain water does not attach to an outer side surface of a side plate 41, and the scattering of water from an air blowing port 24 can be prevented.SELECTED DRAWING: Figure 2

Description

The present invention relates to an air conditioner provided with a support holder that supports a heat exchanger.

Conventionally, this type of heat exchanger includes a plurality of fins arranged with a predetermined gap, and a plurality of heat transfer tubes passing through the plurality of fins so as to intersect with these fins. However, there are some that are connected by a U-shaped hairpin portion at the end of the heat exchanger. As a technique for supporting one heat exchanger and the other heat exchanger formed in a mountain shape in this manner, a technique using a plate-shaped support holder having a plurality of insertion holes disclosed in Patent Document 1 is used. It has been known.

JP 2011-106762 A

However, in this conventional system, when the low-temperature refrigerant circulates in the heat transfer tubes of the heat exchanger during cooling operation or the like, drain water adheres to the hairpin portions.
Drain water adhering to the hairpin falls along the support holder, and when a large amount of drain water (outer drain water) adheres to the outer surface of the side plate located in the outer direction of the case, the opposite surface of the outer surface of the side plate , the temperature of the inner surface of the side plate facing the airflow path through which the low-temperature air passes and positioned inward of the case decreases, and drain water (inner drain water) adheres to the inner surface of the side plate.
A fan that rotates to blow air into the room is installed below the inner surface of the side plate to which the inner drain water adheres. There is room for improvement because water splashing occurs.

In the invention according to claim 1, a heat exchanger including a heat transfer tube having a U-shaped hairpin portion and fins provided on the heat transfer tube;
a support holder that supports a lateral end of the heat exchanger;
The heat exchanger and a drain pan installed below the support holder,
The heat exchanger is
Consists of one heat exchanger and the other heat exchanger arranged in a chevron,
The support holder is
an insertion hole into which the hairpin portion of the heat exchanger is inserted;
a drainage channel formed between the insertion holes and guiding drain water to the drain pan;
a side plate closing an end of a space formed by the one heat exchanger and the other heat exchanger;
a standing portion positioned at the lower end of the side plate and extending in the direction opposite to the heat exchanger;
a gutter extending downwardly from the insertion hole corresponding to the hairpin portion of the one heat exchanger to the insertion hole corresponding to the hairpin portion of the other heat exchanger;
and a drainage hole penetrating to the drainage channel on the lower end side of the gutter.

In a second aspect of the present invention, the gutter has a length of protrusion equal to or longer than the length of protrusion of the hairpin portion of the heat exchanger extending in the opposite direction of the heat exchanger.

Further, in claim 3, the lower end of the gutter is connected to the wall portion forming the insertion hole corresponding to the hairpin portion of the other heat exchanger, and the drain hole is formed in the lower end of the wall portion. It is characterized by

According to the present invention, the gutter extends downwardly from the insertion hole corresponding to the hairpin portion of one heat exchanger to the insertion hole corresponding to the hairpin portion of the other heat exchanger, and the lower end side of the gutter. Since a large amount of outside drain water does not adhere to the outer surface of the side plate located in the outer direction of the case, the temperature of the inner surface of the side plate is reduced. Since it does not decrease, it is possible to prevent the inner drain water from adhering to the inner surface of the side plate located inward of the case, so that water splashing into the room does not occur.

1 is a perspective view of an air conditioner according to an embodiment of the present invention; FIG. It is a perspective view explaining the internal structure of the same embodiment. FIG. 4 is a perspective view of a main part explaining the structure around the heat exchanger in which the support holder of the same embodiment is not attached. It is a figure explaining the support holder structure of the same embodiment. It is a principal part perspective view explaining the structure of support holder vicinity of the same embodiment. It is a principal part enlarged view explaining the structure of support holder vicinity of the same embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below based on the drawings. In the figure, Fr indicates the front, Rr the rear, L the left, R the right, Up the top, and Dn the bottom.

Please refer to FIGS. 1, 2 and 3. FIG. The indoor unit 11 of the air conditioner 10 according to the embodiment of the present invention includes a case 20 provided with an inlet 21 for introducing air on the upper surface, and a fan 22 that takes indoor air into the case 20 and blows it indoors. , a plurality of heat exchangers 30 that exchange heat with the air taken in by the fan 22, a support holder 40 that supports the rotating shaft 23 of the fan 22 and the heat exchanger 30, and the air that has passed through the outer periphery of the heat exchanger 30 a filter unit 25 arranged above the heat exchanger 30 to prevent dust from entering the case 20; and a drain pan 26 installed below the heat exchanger 30 and the support holder 40. and have.

In the heat exchanger 30, an upper rear heat exchanger 301 as one heat exchanger and an upper front heat exchanger 302 as the other heat exchanger are arranged in a mountain shape. A heat exchanger 303 is arranged. A rear plate 27 is installed behind the upper rear heat exchanger 301 so as to partially cover the lower and rear portions of the upper rear heat exchanger 301 .

The heat exchanger 30 includes a heat transfer tube 32 having a U-shaped hairpin portion 31 and fins 33 provided on the heat transfer tube 32 . Each heat exchanger 30 is arranged in layers from the side closer to the fan 22 to the side farther from the fan 22 . Among the heat exchangers 30, the one closest to the fan 22 is the first layer 30a, the one adjacent to the first layer 30a is the second layer 30b, and the one adjacent to the second layer 30b is the third layer 30c. and The first layer 30a and the second layer 30b are integrally formed. The third layer 30c is composed of a single body.

The drain pan 26 is composed of a front drain pan 26 a located below the upper front heat exchanger 302 and the lower front heat exchanger 303 and a rear drain pan 26 b located below the upper rear heat exchanger 301 . Drain water dripping from the heat transfer tubes 32 of the upper front heat exchanger 302 and the lower front heat exchanger 303 is recovered by the front drain pan 26a. Drain water dropped from the upper rear heat exchanger 301 is collected by the rear drain pan 26b.

Please refer to FIGS. 2, 3 and 4. FIG. The support holder 40 has a plate-like side plate 41 that closes the left end of a space S formed by an upper rear heat exchanger 301, an upper front heat exchanger 302, and a lower front heat exchanger 303, and the side plate 41 A plurality of insertion holes 42 formed and into which the hairpin portions 31 are inserted, a bearing 43 for receiving the rotating shaft 23 of the fan 22, a mounting portion 44 for mounting the side plate 41 to the main body side of the indoor unit 11, and a plurality of insertions. A drainage path 45 formed between the holes 42 and guiding drain water dripping from the hairpin portion 31 to the drain pan 26, and a standing portion 46 located at the lower end of the side plate 41 and extending leftward, which is the direction opposite to the heat exchanger 30. and support the lateral ends of the heat exchanger 30 .

4 and 5 are referred to. The insertion hole 42 is formed so as to be surrounded by an elongated hole-shaped wall projecting leftward from the support holder 40 . The leftward projection length of the wall portion of the insertion hole 42 is shorter than the projection length of the hairpin portion 31 .

Please refer to FIG. 2 and FIG. In the side plate 41 of the support holder 40, the first layer 30a of the upper front heat exchanger 302 is inserted through the insertion hole 42a corresponding to the second hairpin portion 31 from the top of the first layer 30a of the upper rear heat exchanger 301. A gutter 47 is installed to extend downward to the insertion hole 42b corresponding to the third (lowest) hairpin portion 31 from the top.
In addition, the side plate 41 has an outer surface on which the gutter 47 is installed and positioned in the outer direction of the case 20, and an inner surface opposite to the outer surface and positioned in the inner direction of the case 20. The inner surface is It faces an air blowing path through which hot air or cold air passes when the fan 22 is driven.
That is, the fan 22 is positioned below the inner surface of the side plate 41 .

4 and 5 are referred to. The gutter 47 has an upper end portion 47a that is substantially L-shaped when viewed from the side and is connected to the lower end of the wall forming the insertion hole 42a, and a lower end portion that is semicircular when viewed from the side and is connected to the lower end of the wall forming the insertion hole 42b. 47b and . Further, the projection length of the gutter 47 in the left direction is longer than the projection length of the hairpin portion 31 .

Please refer to FIG. A drainage hole 48 penetrating through the wall of the insertion hole 42b is formed in the lower part of the wall of the insertion hole 42b that is connected to the lower end 47b of the gutter 47. As shown in FIG. When the drain water flowing along the gutter 47 reaches the lower end portion 47b, it is guided to the drainage channel 45 of the support holder 40 through the drainage hole 48. As shown in FIG.

Please refer to FIG. The front drain pan 26 a protrudes leftward from the wall of the insertion hole 42 of the support holder 40 . Therefore, the drain water flowing through the drainage channel 45 of the support holder 40 corresponding to the upper front heat exchanger 302 and the lower front heat exchanger 303 reaches the lower end, and the drain water dropped from the drainage channel 45 is reliably collected by the front drain pan 26a. It is possible to prevent water leakage to the outside of the case 20.

Also, when the drain water flowing through the drainage channel 45 of the support holder 40 corresponding to the upper rear heat exchanger 301 reaches the lower end and drips from the drainage channel 45, the bottom surface of the rear plate 27 receives it. Drained water is collected in the rear drain pan 26b through a drainage hole formed in the bottom surface of the rear plate 27 (not shown). Drain water collected in the rear drain pan 26b flows down to the front drain pan 26a through a communication hole (not shown) formed at the bottom of the rear drain pan 26b. As a result, water leakage to the outside of the case 20 can be prevented.

Next, the details of the operation of the air conditioner 10 according to the present embodiment and the direction of flow of drain water in the support holder 40 will be described in detail.

When an operation in which a low-temperature refrigerant circulates in the heat transfer tubes 32 constituting the heat exchanger 30 of the indoor unit 11, such as a cooling operation or a dehumidifying operation, is instructed by a remote control or the like (not shown), the fan 22 is driven to cool the indoor air. is taken into the indoor unit 11 from the introduction port 21, the taken-in room air is heat-exchanged by the heat exchanger 30, and cold air is blown from the air blow port 24. - 特許庁

At this time, since the temperature difference between the heat transfer tubes 32 and the indoor air is large, dew condensation occurs on the surfaces of the heat transfer tubes 32 to generate drain water. The generated drain water falls downward and is collected by the drain pan 26 and discharged to the outside of the room through a drain pipe (not shown) connected to the drain pan 26 .

Please refer to FIGS. A part of the drain water adhering to the hairpin portion 31 goes downward, drips into the insertion hole 42 of the support holder 40 , and is guided to the drainage channel 45 along the wall portion of the insertion hole 42 . The drain water guided to the drainage channel 45 flows downward, and when the drain water reaches the lower end of the support holder 40, it drops into the drain pan 26. - 特許庁As a result, the drain water generated at the hairpin portion 31 can be reliably collected by the drain pan 26 .

4 and 5 are referred to. Drain water adhering to the wall of the insertion hole 42 of the support holder 40 into which the hairpin portion 31 of the first layer 30a of the upper rear heat exchanger 301 is inserted is It tends to flow to the outer surface of the side plate 41, which is the outer direction of the .
If a cooling operation or the like is continued in which a low-temperature refrigerant circulates in the heat transfer tubes 32 with a large amount of drain water (outside drain water) adhering to the outer surface of the side plate 41, the cold air flows inward of the case 20. , the temperature of the inner surface of the side plate 41 drops, and drain water (inner drain water) adheres to the inner surface of the side plate 41 .
When the inner drain water adhering to the inner surface of the side plate 41 drips, the dripped drain water is caught in the fan 22 and blows out the water droplets together with the cold air from the blower port 24, causing water splashing.

On the other hand, by installing the gutter 47 connecting the lower end of the insertion hole 42a and the lower end of the insertion hole 42b, it is possible to insert the upper rear heat exchanger 301 into which the hairpin portion 31 of the first layer 30a is inserted. The outer drain water adhering to the wall of the hole 42 is directed to the upper front heat exchanger 302 by the gutter 47, guided to the drain channel 45 through the drain hole 48 at the lower end of the insertion hole 42b, and dropped to the front drain pan 26a. be able to.

As a result, drain water that has fallen from the wall of the insertion hole 42 into which the hairpin portion 31 of the first layer 30a of the upper rear heat exchanger 301 is inserted can be recovered by the gutter 47, Since it is possible to prevent the inner drain water from adhering as the outer drain water, it is possible to prevent the inner drain water from adhering to the inner surface of the side plate 41 due to the temperature drop, and to prevent the occurrence of water splashing from the blower port 24.例文帳に追加

Further, since the gutter 47 is installed so as to slope downward from the upper rear heat exchanger 301 to the upper front heat exchanger 302, the amount of drain water collected by the rear plate 27 and the rear drain pan 26b is reduced. As a result, the rear plate 27 and the rear drain pan 26b are cooled by the drain water and the temperature is lowered. The amount of heat insulating material to be installed can be reduced, and a reduction in manufacturing costs can be realized.

Next, effects of the present invention will be described.

From the lower end of the wall portion of the insertion hole 42a corresponding to the hairpin portion 31 of the upper rear heat exchanger 301 to the lower end of the wall portion of the insertion hole 42b corresponding to the hairpin portion 31 of the upper front heat exchanger 302, it is installed with a downward slope. By providing the gutter 47 in the support holder 40, when the air conditioner 10 performs cooling operation or the like and the low-temperature refrigerant circulates in the heat transfer tubes 32 constituting the heat exchanger 30, the upper rear heat exchanger Since the drain water generated at the hairpin portion 31 of 301 can be guided to the drain channel 45 of the support holder 40 corresponding to the lower front heat exchanger 303 by the gutter 47, the outer drain water adheres to the outer surface of the side plate 41. By not doing so, the inner drain water does not adhere to the inner surface of the side plate 41, and the occurrence of water splashing from the blower port 24 can be prevented.

In addition, since the gutter 47 has a projection length equal to or greater than the projection length of the hairpin portion 31 of the heat exchanger 30 extending leftward, which is the opposite direction of the heat exchanger 30, dripping from the hairpin portion 31 The drain water can be reliably collected by the gutter 47, and the outer drain water can be prevented from adhering to the outer surface of the side plate 41.例文帳に追加

Further, the lower end of the gutter 47 is connected to the wall portion forming the insertion hole 42 , and the drain hole 48 is formed in the lower end of the wall portion of the insertion hole 42 b that is connected to the lower end portion 47 b of the gutter 47 . The drain water that has flowed down can be reliably guided to the drain channel 45 by the drain hole 48 and dripped to the drain pan 26, and the drain water can be recovered by the drain pan 26.例文帳に追加

In this embodiment, the lower end of the wall portion of the insertion hole 42a into which the hairpin portion 31 corresponding to the second from the top of the first layer 30a of the upper rear heat exchanger 301 is inserted, and the lower end of the wall portion of the upper front heat exchanger 302 Although the support holder 40 is provided with the gutter 47 that bridges the lower end of the wall portion of the insertion hole 42b into which the hairpin portion 31 corresponding to the third (bottom) layer 1 layer 30a is inserted, the gutter 47 is provided. The installation position is not limited to this embodiment.

As for the installation position of the gutter 47, the upper end portion 47a of the gutter 47 is connected to the lower end of the wall portion of the insertion hole 42 corresponding to the hairpin portion 31 in the upper rear heat exchanger 301 where a large amount of drain water is generated. The lower end portion 47b is connected to the lower end of the wall portion of the insertion hole 42 corresponding to the hairpin portion 31 of the front heat exchanger 302 or the lower front heat exchanger 303, so that the amount of drain water dripping onto the rear plate 27 can be reduced. This is preferable because it can reduce the amount of heat insulating material installed around the rear plate 27 .

In addition, since the beam-shaped gutter 47 is installed so as to straddle the side plate 41, the strength of the support holder 40 is improved, so that damage due to vibration during transportation can be prevented.

Further, in the present embodiment, the projection length of the gutter 47 in the left direction is longer than the projection length of the hairpin portion 31, but the projection length of the gutter 47 may be the same as that of the hairpin portion 31. good. As a result, the drain water dripping from the hairpin portion 31 can be reliably received, and the drain water can be reliably collected by the front side drain pan 26a into the drain hole 48 of the lower end portion 47b, and the support holder 40 protrudes leftward. By minimizing the length, the horizontal width of the indoor unit 11 is not increased, and the degree of freedom of the product installation space is improved.

10 Air conditioner 26 Drain pan 26a Front drain pan 26b Rear drain pan 30 Heat exchanger 31 Hair pin portion 32 Heat transfer tube 33 Fin 40 Support holder 41 Side plate 42, 42a, 42b Insertion hole 45 Drainage channel 46 Standing portion 47 Gutter 48 Drainage hole 301 Upper rear heat exchanger (one heat exchanger)
302 Upper front heat exchanger (other heat exchanger)

Claims (3)

a heat exchanger including a heat transfer tube having a U-shaped hairpin portion and fins provided on the heat transfer tube;
a support holder that supports a lateral end of the heat exchanger;
The heat exchanger and a drain pan installed below the support holder,
The heat exchanger is
Consists of one heat exchanger and the other heat exchanger arranged in a chevron,
The support holder is
an insertion hole into which the hairpin portion of the heat exchanger is inserted;
a drainage channel formed between the insertion holes and guiding drain water to the drain pan;
a side plate closing an end of a space formed by the one heat exchanger and the other heat exchanger;
a standing portion positioned at the lower end of the side plate and extending in the direction opposite to the heat exchanger;
a gutter extending downwardly from the insertion hole corresponding to the hairpin portion of the one heat exchanger to the insertion hole corresponding to the hairpin portion of the other heat exchanger;
and a drain hole penetrating to the drain channel on a lower end side of the gutter. 2. The air conditioner according to claim 1, wherein said gutter has a projection length equal to or greater than the projection length of said hairpin portion of said heat exchanger extending in the opposite direction of said heat exchanger. 3. A lower end of the gutter is connected to a wall portion forming the insertion hole corresponding to the hairpin portion of the other heat exchanger, and the drain hole is formed in the lower end of the wall portion. 3. The air conditioner according to 1 or 2.

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