JPH05180458A - Indoor unit for air conditioner - Google Patents

Abstract

PURPOSE:To facilitate the takeout of a drain pipe in any direction in response to a desire of a client and an installation place and to avoid troubles in the service of a fan and time like. CONSTITUTION:In a drain pan 8, a drain tank is divided into a primary side drain tank 8c and a secondary side drain tank 8d through a partition 8a which is provided with a communication hole 8b at an end. The primary side drain tank 8c can be arranged with a heat exchanger 2 at an upper part, and is formed on a bottom surface with a water flow passage 8f which inclines downward toward the communication hole 8b side. The secondary side drain tank 8d is provided on the right end with a drain reservoir 8g and a drain pipe connection port 8h and on the left end with another drain reservoir 8j and another drain pipe connection port 8k. Between the both drain reservoirs on the bottom surface, another water flow passage 8i is formed which inclines downward from the communication hole b. Either one of the drain pipe connection ports 8h and 8k of the drain pan 8 is clogged with a plug 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner, and more particularly to drainage drainage of an indoor unit of a ceiling-hung air conditioner.

[0002]

2. Description of the Related Art As an indoor unit for a conventional air conditioner of this type, there is, for example, one disclosed in Japanese Utility Model Laid-Open No. 58-71613. FIG. 6 is a perspective view of an indoor unit of a conventional air conditioner as seen obliquely from the rear, FIG. 7 is a front view of the indoor unit of FIG. 6, FIG. 8 is a cross-sectional view of the indoor unit of FIG. 6 is a perspective view showing a drain pan in the indoor unit of FIG. 6, and FIG. 10 is a cross-sectional view seen from a side showing a pipe connecting portion in the indoor unit of FIG.

In the figure, 1 is an indoor unit body of a ceiling-suspended air conditioner installed on the ceiling of a room, 2 is a heat exchanger disposed in front of the interior of the indoor unit body 1, 3
Similarly, a blower 4 arranged at the rear is a suction port provided below the blower 3, and a suction grill 6 in which an air filter 5 is detachably incorporated is attached to the suction port 4. Reference numeral 7 denotes an air outlet provided on the front side of the indoor unit body 1, and 8 denotes a drain pan disposed below the heat exchanger 2. 9 is a partition plate that is attached to the rear of the heat exchanger 2 and to the side of the blower 3 and divides the rear space of the indoor unit body 1 into a blower installation space 10 and a pipe connection space 11, and 12 is an indoor unit body. 1 a pair of left and right outer panels forming the outer contour of the side portion 1, 13 is a knockout provided on the rear surface of the indoor unit body 1, 14 is a drain pipe for discharging the drain in the drain pan 8 to the outside of the indoor unit body 1. Then, after the indoor unit body 1 is installed, it is connected to the drain port of the drain pan 8. Reference numeral 15 is a refrigerant pipe.

Reference numeral 21 denotes a heat insulating material adhered to the surface of the partition plate 9 facing the heat exchanger 2, and reference numeral 22 denotes a sub attached to an opening formed on the surface of the partition plate 9 facing the blower 3. It is an air filter.

Next, the operation of the indoor unit of the conventional air conditioner will be described. When the blower 3 is energized, the fan of the blower 3 rotates, whereby the air in the room is sucked into the interior of the indoor unit body 1 from the lower suction port 4, and further from the suction port on the side surface of the blower 3. After being sucked inside, it is blown out forward. Then, after passing through the heat exchanger 2 and exchanging heat with the refrigerant that circulates in the pipe of the heat exchanger 2, it is blown out into the room from the air outlet 7. On the other hand, the heat exchanger 2
In the above, condensed water is generated by heat exchange between the indoor air and the refrigerant, and the condensed water adhering to the fins and pipes of the heat exchanger 2 drops into the drain pan 8 installed below.

Here, an example of a conventional drain pan is shown in FIG. In the figure, 8e is a heat exchanger mounting portion on which the heat exchanger 2 is mounted, and 8f is a water flow path which inclines at an arbitrary gradient toward the drain side and guides condensed water generated and dropped by heat exchange to the drain side. , 8g is a drain storage part for storing the condensed water, that is, drain, and 8h is a drain pipe connection port for discharging the drain. In the case of this drain pan 8, the condensed water collected inside the drain pan 8 flows through the water flow path 8f and flows into the drain storage part 8g, and then flows through the drain pipe 14 from the drain pipe connection port 8h to the outside of the indoor unit body 1. Is naturally discharged to.

Next, the installation work of the drain pipe 14 will be described. The drain pipe 14 is connected to the drain pipe connection port 8h of the drain pan 8 after installing the air conditioner on site. In this case, the drain pipe 14 can be arbitrarily taken out rearward, rightward, or leftward corresponding to the mounting position at the site.

Now, when the drain pipe 14 is to be taken out to the left, as shown in FIGS. 7 and 8, after connecting one end to the drain pipe connecting port 8h of the drain pan 8, it is bent to the left and the indoor unit is bent. The inside of the blower installation space 10 of the main body 1 is passed to the left, the left outer panel 12 is penetrated, and is taken out of the indoor unit main body 1 to be installed. In addition, here, since the drain is drained by natural fall, it is necessary to construct the drain pipe 14 with care so as not to have an upward slope. Further, in order to prevent dew condensation, the drain pipe 14 needs to be coated on its outer surface with a heat insulating material or the like.
It corresponds locally.

Next, the operation of the heat insulating material 21 and the sub air filter 22 attached to the partition plate 9 will be described. Since the surface of the partition plate 9 facing the heat exchanger 2 comes into contact with the air that has been heat-exchanged by the heat exchanger 2 and is cooled, the water in the air in the pipe connection space 11 is on the opposite surface of the partition plate 9. Condensation water adheres due to condensation. However, since the heat insulating material 21 is attached to the surface of the partition plate 9 facing the heat exchanger 2,
Cooling of the partition plate 9 is prevented, and dew condensation water does not occur on the outer wall of the partition plate 9.

On the other hand, an opening is provided on the surface of the partition plate 9 facing the blower 3 to secure the amount of air supplied from the suction port 4 to the blower 3 to form a bypass passage for the indoor air, and the knockout 13 Also, the room air is sucked in and introduced to the blower 3 side. Therefore, during operation, the inside of the pipe connection space 11 has a negative pressure, the room air is also sucked from the knockout 13, and then is introduced into the blower 3 through the opening surface of the partition plate 9. At this time, since the sub air filter 22 is attached to the opening surface of the partition plate 9, the dust in the intake air is removed and clogging of the blower 3 and the like is prevented.

[0011]

Since the indoor unit of the conventional air conditioner is constructed as described above, when the drain pipe 14 is taken out to the left, the drain pipe 1
Since 4 passes through the inside of the blower installation space 10, the drain pipe 14 must be installed with care so that the drain pipe 14 does not get in the way when performing the service of the blower 3 or the like and the drain pipe 14 does not have an upward slope. ..

Further, the air in the room is sucked into the pipe connection space 11 from the knockout 13 for the pipes, and as shown in FIG. Since dew condensation occurs on the part, it is necessary to sufficiently insulate these connection parts after connecting the pipes.If the heat insulation process is insufficient, dew condensation will occur on the pipe connection parts and There is a risk of dropping and flowing out of the air filter 5 and the indoor unit body 1. Furthermore, it is necessary to attach a heat insulating material 21 for preventing dew condensation and a sub air filter 22 for removing dust in the air to the partition plate 9, resulting in a high cost.

Therefore, the present invention makes it possible to easily take out the drain pipe in any direction according to the customer's request or the installation location, and the air conditioning does not hinder the service such as the blower. The first issue is to provide an indoor unit of the machine. Further, the present invention collects all the condensed water that has condensed on the refrigerant pipe connection portion and the outer wall of the partition plate, thus preventing the condensed water from leaking to the outside of the indoor unit and the like, and the heat insulation attached to the partition plate. A second object is to provide an indoor unit of an air conditioner that can reduce costs by eliminating materials and sub air filters.

[0014]

An indoor unit of an air conditioner according to a first aspect of the invention is divided into two drain tanks via a partition plate having a communicating portion formed at one end, and one drain tank is provided. A heat exchanger can be arranged in the upper part of the container, and a water channel is formed on the bottom surface that inclines downward toward the communication part side, and the other drain tank has storage parts at both left and right ends. And a drain pipe connection port are provided, and a drain pan in which a water flow path that slopes downward from the communication part side is formed is provided between both storage parts on the bottom surface, and any one of the drain pipe connection ports of this drain pan is provided. One is closed by a stopper.

Further, the indoor unit of the air conditioner according to the invention of claim 2 is provided in parallel with the outer panel in close proximity, and accommodates the refrigerant pipe connecting portion in the space formed between the outer panel and the outer panel. A partition plate and a drain pan provided with a drain tank for collecting the drain condensed on the partition plate and the refrigerant pipe connection portion are attached to the drain tank of the heat exchanger.

[0016]

According to the present invention, when the drain pipe connecting port on the side opposite to the communicating part of the drain pan is closed with a plug, the condensed water generated in the heat exchanger falls into the drain tank below it and passes through the communicating part. After flowing into the storage section of the drain tank on the other side, it is discharged to the outside of the indoor unit from the drain piping connection port on the opening side through the drain piping. On the other hand, when the drain pipe connection port on the same side as the communication part of the drain pan is closed with a plug, the condensed water generated in the heat exchanger falls into the drain tank below it, and passes through the communication part to the drain tank on the other side. It flows into the reservoir. At this time, since the drain pipe connection port on the storage portion side is closed by the plug, the drain pipe connection port is stored at this portion and the water level is raised. And
When the water level exceeds the top of the water flow path, it flows on the water flow path toward the reservoir on the opposite side and is discharged from the opening side drain pipe connection port to the outside of the indoor unit through the drain pipe. For this reason, one of the drain piping connection ports can be selected to connect the drain piping according to the installation site, so it is not necessary to pass through the inside of the fan installation space, and the drain piping becomes an obstacle in the service such as the blower. Never.

According to the second aspect of the present invention, the drain pan for storing the condensed water of the heat exchanger is integrally provided with the drain tank for storing the condensed water condensed on the refrigerant pipe connecting portion and the inner wall of the partition plate. All can be stored in the drain pan and can be prevented from leaking to the outside of the indoor unit. As a result, the insulation of the refrigerant pipe connection does not have to be perfect,
Further, it is not necessary to attach the heat insulating material to the partition plate. And
Since the partition plate is placed close to the outer panel to the minimum required position for accommodating the refrigerant pipe connection between the outer panel and the outer panel, the bottom surface of the indoor unit body can be installed without providing a bypass flow path from the knockout. The air supply required for the blower can be secured only by the suction port, and it is not necessary to form the opening surface on the partition plate and attach the sub air filter.

[0018]

【Example】

<First Embodiment> First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a drain pan in an indoor unit of an air conditioner according to a first embodiment of the present invention, and FIG. 2 is a front view of an indoor unit of an air conditioner according to the first embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 6 to 10 are the same as or correspond to the conventional constituent parts.

In the figure, 8 is a drain pan provided in the lower portion of the heat exchanger 2, 8a is a partition which is entirely provided upright at the center of the drain pan 8 in the width direction, and a partition having a communication hole 8b at its end. The inside of the drain pan 8 is covered with a plate, and the primary side drain tank 8
It is divided into c and the secondary side drain tank 8d. Reference numeral 8e denotes a heat exchanger mounting portion which is formed in a central portion of the bottom surface of the primary side drain tank 8c, on which the heat exchanger 2 is mounted, and 8f denotes the communication hole formed on substantially the entire bottom surface of the primary side drain tank 8c. A water channel inclined downward toward the 8b side, 8g is a drain storage portion formed on the side of the communication hole 8b of the secondary side drain tank 8d, 8h is attached to the outer surface of the drain storage portion 8g, and the drain pipe 14 A drain pipe connection port that can be attached to one end of 8d is a water channel formed on the bottom surface of the secondary side drain tank 8d and inclined downward from the communication hole 8b side to the opposite side, the top of which is the communication hole. It is set at a position lower than the lowest position of 8b.
Reference numeral 8j is a drain storage portion formed at the downstream end of the water flow passage 8i, and 8k is a drain pipe connection port which is attached to the outer surface of the drain storage portion 8j and which can be attached to one end of the drain pipe 14.

Reference numeral 16 denotes a drain pipe connection port 8 of the drain pan 8.
h or a plug such as a rubber plug that is attached to the drain pipe connection port 8k to close it.

FIG. 2 shows the case of the drain left pipe,
The drain pipe 14 is connected to the drain pipe connection port 8k on the left side of the drain pan 8, and the drain pipe connection port 8h on the right side is the plug 1
It is closed at 6.

Next, drainage drainage in the indoor unit of the air conditioner of the present embodiment constructed as described above will be explained. First, in the case of the drain right extraction pipe, that is, the drain pipe 14 is the drain pipe connection port 8h on the right side of the drain pan 8.
Connected to the drain pan 8, and the drain pipe connection port 8 on the left side of the drain pan 8
A case where the plug 16 is attached to k will be described. Condensed water generated in the heat exchanger 2 is drain pan 8 installed below.
Is dropped into the primary side drain tank 8c and flows toward the communication hole 8b side over the water flow path 8f. Then, after reaching the downstream side, it falls through the communication hole 8b and into the drain storage portion 8g of the secondary side drain tank 8d. Subsequently, this drain storage section 8g
The drain that has flowed into is introduced into the drain pipe 14 from the drain pipe connection port 8h on the right side, and is discharged to the outside of the machine.

Next, in the case of the drain left extraction pipe, that is, as shown in FIG. 2, the drain pipe 14 is connected to the drain pan 8.
The case where the drain pipe connection port 8k on the left side of the above and the drain pipe connection port 8h on the right side of the drain pan 8 are provided with the plug 16 will be described. Condensed water generated in the heat exchanger 2 is first dropped into the primary side drain tank 8c of the drain pan 8 installed below, similarly to the case of the drain right extraction pipe, and a communication hole is formed above the water flow path 8f. It flows toward the 8b side.
Then, after reaching the downstream side, it falls through the communication hole 8b and into the drain storage portion 8g of the secondary side drain tank 8d. However, since the drain pipe connection port 8h on the right side is closed by the plug 16, the drain in the drain storage portion 8g gradually rises in water level, and eventually reaches the top of the water flow passage 8i and moves downward in the water flow passage 8i. To flow toward. Then, it flows into the drain storage section 8j on the left side, is further guided into the drain pipe 14 through the opened drain pipe connection port 8k, and is discharged to the outside of the machine.

As described above, in the indoor unit of the air conditioner of the above-described embodiment, the primary side drain tank 8c and the secondary side drain are provided through the partition plate 8a having the communication hole 8b formed at the end as the communication section. The water flow passage is divided into two drain tanks 8d, the heat exchanger 2 can be arranged on the upper part of the primary drain tank 8c, and the bottom surface is inclined downward toward the communication hole 8b. 8f is formed, and the drain storage section 8g and the drain piping connection port 8h are provided at the right end of the secondary side drain tank 8d.
The drain pan 8 is provided with a drain storage portion 8j and a drain pipe connection port 8k at the left end portion, and a water flow passage 8i is formed between the drain storage portions on the bottom surface and is inclined downward from the communication hole 8b side. Is provided, and one of the drain piping connection ports 8h and 8k of the drain pan 8 is closed by a plug 16.

Therefore, according to the above-described embodiment, by closing one of the drain pipe connection ports of the drain pan 8 with the plug 16, the drain pipe 14 connected to the drain pipe connection port of the other side is connected to the heat exchanger 8. Since the drain of the above can be discharged to the outside of the machine, the degree of freedom and stability of the local piping work are improved. Further, since the drain pipe 14 does not have to pass through the blower installation space 10, the drain pipe 14 does not interfere with the service of the blower 3 and the like, and the workability is improved.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. 3 is a perspective view of an indoor unit of an air conditioner according to a second embodiment of the present invention as seen obliquely from the rear, FIG. 4 is a cross-sectional view as seen from a side showing a pipe connection portion in the indoor unit of FIG. 3, and FIG. It is a perspective view which shows the principal part of the drain pan of FIG. In the figure, the same reference numerals as those in FIGS. 1 and 2 are the same as or correspond to the components of the first embodiment.

In the figure, 9 is a partition plate which is attached in parallel with and close to one outer panel 12, and which is the outer panel 12.
And a pipe connection space 11 is formed between
The pipe connection portion housed inside the pipe connection space 11 is isolated from the heat exchanger 2 and the blower 3. Reference numeral 13 denotes a knockout formed on the rear surface of the outer panel 12, through which the drain pipe 14 and the refrigerant pipe 15 can pass. The partition plate 9 is not attached with a heat insulating material on the surface facing the heat exchanger 2, and is not provided with an opening on the surface facing the blower 3. The gap between the partition plate 9 and the outer panel 12 is the pipe connection space 1
1 has a minimum size necessary to accommodate the connection portion of the drain pipe 14 and the refrigerant pipe 15 inside the unit 1.

In FIG. 5, 18 is a drain pan used in the second embodiment, 18a is a main storage tank for recovering drain from the heat exchanger 2 disposed in the upper portion, as in the conventional example, and 18b is a refrigerant. A first sub-storage tank located below the pipe connection portion, 18c is a pedestal that supports the partition plate 9, 18d is a second sub-storage tank that collects the drainage condensed on the partition plate 9,
8e is attached to the rear portion of the first sub storage tank 18b,
It is a drain pipe connection port for discharging the drain in the drain pan 18. The first sub-storage tank 18b and the second sub-storage tank 18d are the features of the second embodiment, and the main storage tank 18a and the internal storage portion communicate with each other and are integrally formed.

The indoor unit of the air conditioner of the present embodiment having the above-described structure is provided with the drain pipe 14 and the refrigerant pipe 1
After the pipes 5 are connected in the pipe connection space 11, they are drawn out of the indoor unit body 1 from the knockout 13 at the rear part of the outer panel 12 and further piped by performing a predetermined pipe work.

Next, the drainage of the indoor unit of the air conditioner of the second embodiment will be described. Heat exchanger 2 during operation
Condensed water that has condensed on the main storage tank 1 in the drain pan 18
8a, then passes through the drain pipe connection port 18e through the first sub-storage tank 18b, passes through the drain pipe 14, and is discharged to the outside of the machine.

On the other hand, when dew condensation occurs on the connection part due to insufficient insulation work of the connection part after connecting the refrigerant pipes, the dew condensation water is collected in the first sub-storage tank 18b, so the indoor unit body No leakage to the bottom of 1. Further, the dew condensation water that has condensed on the outer wall of the partition plate 9 is the second sub storage tank 18d.
It is dripped into the inside, passes through the inside of the drain pipe 14 from the drain pipe connection port 18e through the first sub storage tank 18b, and is discharged to the outside of the machine in the same manner as above.

As described above, the indoor unit of the air conditioner of the second embodiment is provided in parallel with the outer panel 12 and in parallel, and the refrigerant pipe is provided in the pipe connection space 11 formed between the inner panel and the outer panel 12. A partition plate 9 for housing the connection part, a second sub-storage tank 18d and a first sub-storage tank 18b for collecting the drainage condensed on the partition plate 9 and the refrigerant pipe connection part, and a drain for the heat exchanger 2 are mainly collected. The drain pan 18 attached to the storage tank 18a is provided.

Therefore, according to the above-mentioned embodiment, all the condensed water condensed on the heat exchanger 2, the partition plate 9 and the refrigerant pipe connecting portion can be collected in the drain pan 18, and leak to the outside of the indoor unit body 1. Can be prevented. Therefore, it is not necessary to completely insulate the refrigerant pipe connection part on site, and as a result, the work can be simplified, the safety is improved, and the insulation material is not attached to the partition plate 9. Becomes Further, since the partition plate 9 is brought close to the outer panel 12 to a position which is minimally required to accommodate the refrigerant pipe connection portion with the outer panel 12, the bypass flow path from the knockout 13 is not provided. However, the required air supply amount to the blower 3 can be secured, the formation of the opening surface on the partition plate 9 and the attachment of the sub air filter are unnecessary, and the cost can be reduced.

By the way, in the first embodiment described above, the communication hole 8b of the drain pan 8 is formed at the right end of the partition plate 8a.
Although the water flow path 8f of the secondary drain tank 8c is lowered to the right, the water flow path 8i of the secondary drain tank 8d is inclined to the left,
In the case of implementing the present invention, the communication hole 8b is formed in the left end portion of the partition plate 8a, the water flow passage 8f of the primary side drain tank 8c is lowered leftward, and the water flow passage 8i of the secondary side drain tank 8d is rightward. It may be a downward slope.

Further, a communication hole 8b is formed as a communication portion at the end of the partition plate 8a of the drain pan 8 of the first embodiment described above, but this is not the only limitation when implementing the present invention. For example, notches may be provided, and in short, at the end of the partition plate 8a, condensed water generated in the drain pan 8 is transferred from the primary drain tank 8c to the secondary drain tank 8d.
Anything that can lead to

Further, the indoor unit body 1 of each of the above embodiments
Shows the case where the refrigerant pipe 15 is arranged on the right side, but it goes without saying that, in the case of implementing the present invention, the same can be applied to the case where the refrigerant pipe 15 is arranged on the left side.

[0037]

As described above, the indoor unit of the air conditioner according to the invention of claim 1 is divided into two drain tanks through the partition plate having the communicating portion formed at the end thereof, and one of the drain tanks is divided. A heat exchanger can be arranged in the upper part of the container, and a water channel is formed on the bottom surface that inclines downward toward the communication part side, and the other drain tank has storage parts at both left and right ends. And a drain pipe connection port are provided, and a drain pan in which a water flow path that slopes downward from the communication part side is formed is provided between both storage parts on the bottom surface, and any one of the drain pipe connection ports of this drain pan is provided. One is closed by a stopper. Therefore, one of the drain pan connection ports can be blocked with a plug, and the drain of the heat exchanger can be discharged from the refrigerant pipe connected to the drain piping connection port on the other side to the outside of the machine. The degree and stability are improved. Further, since the drain pipe does not have to pass through the space for installing the blower, the drain pipe does not interfere with the service of the blower or the like, and the workability is improved.

Further, the indoor unit of the air conditioner according to the invention of claim 2 is provided with a partition which is provided close to and parallel to the outer panel and accommodates the refrigerant pipe connecting portion in the space formed between the outer panel and the inner panel. It is provided with a plate and a drain pan in which a drain tank for collecting the drain condensed on the partition plate and the refrigerant pipe connection portion is attached to the drain tank of the heat exchanger. Therefore, it is possible to collect all the condensed water that has condensed on the heat exchanger, the refrigerant pipe connection part, and the partition plate in the drain pan, and to prevent it from leaking outside the indoor unit, etc. Does not have to be perfect, which simplifies construction, improves safety, and eliminates the need to attach heat insulating material to partition plates. Also, since the partition plate is close to the outer panel, it is possible to secure the required air supply amount to the blower without providing a bypass flow path from the knockout,
The formation of the opening surface on the partition plate and the attachment of the sub air filter are unnecessary, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a drain pan in an indoor unit of an air conditioner of a first embodiment of the present invention.

FIG. 2 is a front view of the indoor unit of the air conditioner according to the first embodiment of the present invention.

FIG. 3 is a perspective view of an indoor unit of an air conditioner according to a second embodiment of the present invention, which is viewed obliquely from the rear.

FIG. 4 is a side sectional view showing a pipe connecting portion in the indoor unit of FIG.

5 is a perspective view showing a main part of the drain pan of FIG.

FIG. 6 is a perspective view of an indoor unit of a conventional air conditioner as seen obliquely from the rear.

FIG. 7 is a front view of the indoor unit shown in FIG.

FIG. 8 is a cross-sectional view of the indoor unit of FIG. 6 viewed from the side.

9 is a perspective view showing a drain pan in the indoor unit of FIG.

10 is a cross-sectional view showing a pipe connection portion in the indoor unit of FIG. 6 as seen from a side surface.

[Explanation of symbols]

 2 heat exchanger 8,18 drain pan 8a partition plate 8b communication hole 8c primary side drain tank 8d secondary side drain tank 8f, 8i water flow path 8g, 8j drain storage section 8h, 8k drain pipe connection port 9 partition plate 11 pipe connection Space 12 Outer panel 16 Plug 18a Main storage tank 18b First sub storage tank 18d Second sub storage tank

Claims (2)

[Claims] 1. A drain tank is divided into two drain tanks through a partition plate having a communicating portion formed at an end thereof, and one of the drain tanks can be provided with a heat exchanger at an upper portion thereof, and the drain tank is provided with the heat exchanger at a bottom surface thereof. A water flow path that is inclined downward toward the communication part is formed, and the other drain tank is provided with a storage part and a drain pipe connection port at both left and right ends, and between the two storage parts on the bottom surface. An indoor unit for an air conditioner, comprising: a drain pan in which a water flow path that is inclined downward from the communication portion side is formed; and a plug that closes one of the drain pipe connection ports of the drain pan. .. 2. Providing parallel to the outer panel in close proximity,
A partition plate for accommodating the refrigerant pipe connection portion in the space formed between the outer panel and a drain tank for collecting the drain condensed on the partition plate and the refrigerant pipe connection portion is attached to the drain tank of the heat exchanger. An indoor unit for an air conditioner, comprising: a drain pan.