JP3013566B2 - Indoor unit of 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 indoor unit of an air conditioner, and more particularly to drainage of an indoor unit of a ceiling-suspended air conditioner.

[0002]

2. Description of the Related Art Conventional indoor units of this type of air conditioner are disclosed, for example, in Japanese Utility Model Laid-Open Nos. 57-25959, 58-71613 and 62-77526.
There are those published in the official gazettes. Here, a conventional example disclosed in Japanese Utility Model Laid-Open No. 58-71613 will be described. 6 is a perspective view of the indoor unit of the conventional air conditioner as viewed obliquely from behind, 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.
9 is a perspective view showing a drain pan in the indoor unit shown in FIG. 6, and FIG. 10 is a cross-sectional view showing a piping connection part in the indoor unit shown in FIG.

[0003] In the drawing, reference numeral 1 denotes an indoor unit body of a ceiling-suspended air conditioner installed on the ceiling of a room; 2, a heat exchanger disposed in front of the indoor unit body 1;
Is a blower also disposed at the rear, and 4 is a suction port provided below the blower 3, and a suction grille 6 in which an air filter 5 is detachably mounted is attached to the suction port 4. Reference numeral 7 denotes an air outlet provided on the front side of the indoor unit main body 1, and reference numeral 8 denotes a drain pan provided below the heat exchanger 2. Reference numeral 9 denotes a partition attached to the rear of the heat exchanger 2 and to the side of the blower 3 and divides a rear space of the indoor unit main body 1 into a blower installation space 10 and a pipe connection space 11, and 12 denotes an indoor unit main body. A pair of left and right outer panels forming an outer shell of a side portion of 1, 13 is a knockout provided on the rear surface of the indoor unit main body 1, 14 is a drain pipe for discharging the drain in the drain pan 8 to the outside of the indoor unit main body 1. After the indoor unit main body 1 is installed, it is connected to the drain port of the drain pan 8. Reference numeral 15 denotes a refrigerant pipe.

[0004] Reference numeral 21 denotes a heat insulating material attached to the surface of the partition plate 9 facing the heat exchanger 2, and reference numeral 22 denotes a sub-unit 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 conventional indoor unit of the 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 forward. Then, while passing through the heat exchanger 2, the refrigerant exchanges heat with the refrigerant circulating in the pipe of the heat exchanger 2, and is blown into the room from the outlet 7. On the other hand, heat exchanger 2
In this case, condensed water is generated by the heat exchange between the indoor air and the refrigerant, and the condensed water attached to the fins and pipes of the heat exchanger 2 drops into the drain pan 8 provided 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 inclined at an arbitrary gradient toward the drainage side and guiding condensed water generated and dropped by heat exchange to the drainage side. , 8g is a drain storage part for storing this condensed water, that is, drain, and 8h is a drain pipe connection port for discharging the drain. In the case of the drain pan 8, the condensed water collected inside the drain pan 8 flows through the water flow path 8f, flows into the drain storage section 8g, and then flows through the drain pipe 14 from the drain pipe connection port 8h to the outside of the indoor unit main body 1. Is discharged naturally.

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 the air conditioner is installed on site. In this case, the drain pipe 14 can be arbitrarily taken out rearward, rightward, or leftward according to the installation position on the site.

If the drain pipe 14 is to be taken out to the left, as shown in FIGS. 7 and 8, one end is connected to the drain pipe connection port 8h of the drain pan 8 and then bent leftward to make the indoor unit. The inside of the blower installation space 10 of the main body 1 is passed to the left, passed through the left outer panel 12, taken out of the indoor unit main body 1, and constructed. Here, since the drain is drained by gravity, the drain pipe 14 needs to be constructed with care so as not to have an upward slope. In addition, it is necessary to cover the outer surface of the drain pipe 14 with a heat insulating material or the like in order to prevent dew condensation.
We cope 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. The surface of the partition plate 9 facing the heat exchanger 2 is cooled by contact with the air heat exchanged by the heat exchanger 2, so that the opposite surface of the partition plate 9 has moisture in the air in the pipe connection space 11. Condensation of water causes condensation. However, since the heat insulating material 21 is adhered to the surface of the partition plate 9 facing the heat exchanger 2,
The cooling of the partition plate 9 is prevented, and no dew condensation occurs 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 in order to secure an air supply amount from the suction port 4 to the blower 3 to form a bypass flow path for room air. Therefore, the indoor air is sucked and introduced into the blower 3 side. Therefore, during operation, the inside of the pipe connection space 11 becomes a negative pressure, and the room air is sucked from the knockout 13, passes through the opening surface of the partition plate 9, and is introduced into the blower 3. At this time, since the sub air filter 22 is attached to the opening surface of the partition plate 9, dust in the suction air is removed, and clogging of the blower 3 and the like is prevented.

[0011]

Since the conventional indoor unit of the air conditioner is constructed as described above, if the drain pipe 14 is taken out to the left, the drain pipe 1
Since the pipe 4 passes through the inside of the blower installation space 10, the drain pipe 14 must be obstructed when the service of the blower 3 or the like is performed, and the drain pipe 14 must be constructed with care not to be inclined upward. .

Further, indoor air is sucked into the piping connection space 11 from a knockout 13 for piping, and as shown in FIG. 10, heat exchanges with a connection portion of a drain piping 14 and a refrigerant piping 15 to exchange these air. Since dew condensation occurs in these parts, it is necessary to sufficiently heat-insulate these connections after connecting the pipes.If the heat insulation treatment is insufficient, dew condensation will occur at the pipe connections and the condensed water will There is a possibility that the liquid will drop and flow out of the air filter 5 and the indoor unit body 1. Further, the partition plate 9 needs to be provided with a heat insulating material 21 for preventing dew condensation and a sub air filter 22 for removing dust in the air, which has increased costs. With other prior art
Japanese Utility Model Publication No. 2-62311 and Japanese Utility Model Publication 3-226
No. 68, Japanese Unexamined Utility Model Publication No. 2-28018
There is. Japanese Utility Model Laid-Open No. 2-62311 discloses that heat is
Heat exchanger and the blower that blows the heat exchanger
Drain water that drops during cooling operation is received below the heat exchanger.
A drain pan, and a drain at both ends of the drain pan.
In addition to providing a water outlet, the back of the drain pan
A technology in which a convex portion is formed at approximately the center of both drains is disclosed.
I have. However, the technology described in this publication is
A drain pipe can be connected, but to collect condensed water
It was difficult if the amount of water contraction was not large. Also, real fairness
In JP-A-3-22668, the inside of the unit is used as a separator.
More forward and backward, and place the heat exchanger in the front space and the rear space.
Blowers are installed between them, and drain pipes and cooling
Connect the medium piping in the rear space, and
Ceiling sky with a suction port on the bottom and an outlet on the front of the unit
In the air conditioning fiber, the blower side and piping connection
A device provided with a partition plate for partitioning at a pace is disclosed.
You. However, the partition requires a sub air filter.
Therefore, the cost cannot be reduced. Actual Kaihei 2
No. 28018 discloses a corner of a rectangular casing body.
Section is a square with the connection tube end on
A space is provided, and the space
External pipe connection to the end of the connection pipe, external pipe cover
The corner casing with lube supported inside
Attached detachably to the body, below the space
Place the sub-drain pan, and
An operation gap was formed between the upper surface of the sub drain pan and
Techniques are disclosed. The technology described in this publication is
Incorporating a corner casing into the sing body
Therefore, the cost cannot be reduced.

Therefore, the present invention can easily take out the drain pipe in any direction according to the customer's request or installation location, collect all the condensed water, and provide services such as a blower. It is an object of the present invention to provide an indoor unit of an air conditioner that does not cause a problem in the first aspect. In addition, the present invention collects all the condensed water condensed on the refrigerant pipe connection portion and the outer wall of the partition plate, thereby preventing the condensed water from leaking to the outside of the indoor unit, etc., and also heat insulating attached to the partition plate. A second object of the present invention is to provide an indoor unit of an air conditioner that can reduce costs by eliminating materials and a sub air filter.

[0014]

An indoor unit of an air conditioner according to the present invention is divided into two drain tanks via a partition plate having a communicating portion at an end, and one drain tank is provided. In the upper part, a heat exchanger can be arranged at the upper part, and a water flow path inclined downward toward the communication part side is formed on the bottom surface, and the other drain tank has storage parts at both left and right ends. And a drain pipe connection port is provided, and a drain pan is formed between the two storage sections on the bottom surface and a water flow path inclined downward from the communication section side.

The indoor unit of the air conditioner according to the second aspect of the present invention is provided in parallel with and close to the outer panel, and accommodates the refrigerant pipe connecting portion in a space formed between the indoor unit and the outer panel. A partition plate and a sub-storage tank for collecting drain condensed in the refrigerant pipe connection portion of the partition plate and the heat exchanger
To the main drain tank for collecting the drain of the heat exchanger
And a drain pan attached thereto .

[0016]

According to the first aspect, the condensed water generated in the heat exchanger falls into the drain tank below the heat exchanger, flows into the storage part of the drain tank on the other side through the communicating part, and then flows into the drain part on the opening side. It is discharged from the pipe connection port to the outside of the indoor unit via the drain pipe. On the other hand, if the drain pipe connection port on the same side as the communication part of the drain pan is closed with a stopper, 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 part side is closed by a stopper, the water is stored in this part to raise the water level. Then, when the water level exceeds the top of the water flow path, the water flows on the water flow path toward the storage section on the opposite side, and is discharged to the outside of the indoor unit through the drain pipe connection port on the opening side through the drain pipe. For this reason, one of the drain pipe connection ports can be selected and the drain pipe can be connected in accordance with the installation site, so that it is not necessary to pass through the blower installation space, and the drain pipe becomes a hindrance in services such as a blower. Nothing. Also, the drain pan
Divided into two drain tanks, heat exchange in one drain tank
A vessel is provided, and the other drain tank is
Since the storage section and the drain pipe connection port are provided,
The bottom area of the renpan is reduced by half, and the water level of the condensed water changes.
And increase the efficiency of condensed water recovery.
Can be

According to a second aspect of the present invention, a refrigerant pipe connecting portion is provided on a main drain tank for storing condensed water of a heat exchanger.
Storage tank that stores condensed water condensed on the inner wall of the partition plate
Since the attached integrally, the condensed water all can be stored in the drain pan can be prevented from leaking to the outside or the like of the indoor unit. As a result, the heat insulation of the refrigerant pipe connection may not be complete, and it is not necessary to attach a heat insulating material to the partition plate. And, since the partition plate is brought close to the outer panel to the minimum necessary position for storing the refrigerant pipe connection portion between the outer panel and the outer panel, the indoor unit main body can be provided without providing a bypass flow path from the knockout. The required amount of air supply to the blower can be ensured only by the suction port on the lower surface, and it is not necessary to form an opening surface on the partition plate and attach a sub air filter.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 the air conditioner according to the first embodiment of the present invention. In the drawings, the same reference numerals as those in FIGS. 6 to 10 denote the same or corresponding parts as those of the related art.

In the drawing, reference numeral 8 denotes a drain pan provided below the heat exchanger 2; 8a, a partition which is entirely erected at the center in the width direction of the drain pan 8 and has a communication hole 8b formed at an end thereof. The inside of the drain pan 8 is connected to the primary drain tank 8 with a plate.
c and the secondary drain tank 8d. Reference numeral 8e denotes a heat exchanger mounting portion formed at the center of the bottom surface of the primary drain tank 8c, on which the heat exchanger 2 is mounted. Reference numeral 8f denotes the communication hole formed on substantially the entire bottom surface of the primary drain tank 8c. A water flow path inclined downward toward the 8b side, 8g is a drain reservoir formed on the side of the communication hole 8b of the secondary drain tank 8d, 8h is attached to an outer surface of the drain reservoir 8g, and a drain pipe 14 is provided. A drain pipe connection port 8i at one end of which can be attached is a water flow passage formed on the bottom surface of the secondary drain tank 8d and inclined downward from the communication hole 8b side toward the opposite side, the top of which is a communication hole. 8b is set at a position lower than the lowermost position.
Reference numeral 8j denotes a drain storage portion formed at the downstream end of the water flow passage 8i, and reference numeral 8k denotes a drain pipe connection port which is attached to the outer surface of the drain storage portion 8j and to which one end of the drain pipe 14 can be attached.

Reference numeral 16 denotes a drain pipe connection port 8 of the drain pan 8
h or a stopper such as a rubber stopper which is attached to the drain pipe connection port 8k and closed.

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 connected to the plug 1
It is closed at 6.

Next, drainage in the indoor unit of the air conditioner of the present embodiment configured as described above will be described. First, in the case of the drain right outlet pipe, that is, the drain pipe 14 is connected to the drain pipe connection port 8 h on the right side of the drain pan 8.
And the drain pipe connection port 8 on the left side of the drain pan 8
The case where the stopper 16 is attached to k will be described. The condensed water generated in the heat exchanger 2 is discharged from a drain pan 8
And flows toward the communication hole 8b side on the water flow path 8f. Then, after reaching the downstream side, it falls into the drain storage portion 8g of the secondary drain tank 8d through the communication hole 8b. Next, this drain storage unit 8g
Drained into the drain pipe 14 from the right drain pipe connection port 8h, and is discharged outside the machine.

Next, in the case of the drain outlet pipe, that is, as shown in FIG.
The case where the stopper 16 is attached to the drain pipe connection port 8h on the right side of the drain pan 8 will be described. The condensed water generated in the heat exchanger 2 is first dropped into the primary drain tank 8c of the drain pan 8 installed below, as in the case of the drain right extraction pipe, and a communication hole is formed on the water flow path 8f. It flows toward the 8b side.
Then, after reaching the downstream side, it falls into the drain storage portion 8g of the secondary drain tank 8d through the communication hole 8b. However, since the right drain pipe connection port 8h 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 path 8i to move down the water flow path 8i. Flow toward. Then, it flows into the drain storage section 8j on the left side, and is further guided into the drain pipe 14 from the open drain pipe connection port 8k and discharged outside the machine.

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

Therefore, according to the above embodiment, by closing one of the drain pipe connection ports of the drain pan 8 with the stopper 16, the heat exchanger 8 is connected to the drain pipe 14 connected to the other drain pipe connection port. The drainage can be discharged outside the machine, improving the flexibility and stability of piping work on site. In addition, since the drain pipe 14 does not need to be passed through the blower installation space 10, the drain pipe 14 does not hinder the service of the blower 3 and the like, and workability is improved. The drain pan is divided into two drain tanks.
A heat exchanger is installed in one drain tank and the other is
The drain tank is connected to the storage tank at both left and right ends, respectively.
Because there is a connection opening, the bottom area of the drain pan is 2 minutes
And the change in the water level of the condensed water can be increased.
And the efficiency of collecting condensed water can be increased.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a perspective view of the indoor unit of the air conditioner according to the second embodiment of the present invention as viewed obliquely from the rear, FIG. 4 is a cross-sectional view of the indoor unit of FIG. FIG. 5 is a perspective view showing a main part of the drain pan of FIG. 4. In the drawing, the same reference numerals as those in FIGS. 1 and 2 denote the same or corresponding parts as those in the first embodiment.

In the drawing, reference numeral 9 denotes a partition plate which is attached in parallel to one of the outer panels 12 and is parallel to the outer panel 12.
And a pipe connection space 11 is formed between them, and
The pipe connection part 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 so that a drain pipe 14 and a refrigerant pipe 15 can pass therethrough. The partition plate 9 has no heat insulating material attached to the surface facing the heat exchanger 2, and has no 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 between the drain pipe 14 and the refrigerant pipe 15.

In FIG. 5, reference numeral 18 denotes a drain pan used in the second embodiment, reference numeral 18a denotes a main storage tank for collecting drain from the heat exchanger 2 disposed at the upper portion, similarly to the conventional example, and reference numeral 18b denotes a refrigerant. A first sub-storage tank located below the pipe connection portion, 18c is a pedestal supporting the partition plate 9, 18d is a second sub-storage tank for collecting drain condensed on the partition plate 9, 1
8e is attached to the rear of the first sub-storage tank 18b,
A drain pipe connection port for discharging the drain in the drain pan 18. The first sub-storage tub 18b and the second sub-storage tub 18d are features of the second embodiment, and the main storage tub 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 configured as described above includes the drain pipe 14 and the refrigerant pipe 1.
5 is connected in the pipe connection space 11, pulled out from the knockout 13 at the rear of the outer panel 12 to the outside of the indoor unit main body 1, and further piped by performing a predetermined pipework.

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

On the other hand, if dew forms on the connection part due to insufficient insulation work on the connection part after the connection of the refrigerant pipe, the dew condensation water is collected in the first sub-storage tank 18b. 1 does not leak to the bottom. In addition, the dew water condensed on the outer wall of the partition plate 9 is supplied to the second sub-storage tank 18d.
In the same manner as described above, the water passes through the first sub-storage tank 18b, passes through the drain pipe connection port 18e through the drain pipe 14, and is discharged outside the machine.

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

Therefore, according to the above embodiment, all of the condensed water condensed on the heat exchanger 2, the partition plate 9, and the refrigerant pipe connection portion can be collected in the drain pan 18 and leaked to the outside of the indoor unit main body 1. Can be prevented. Therefore, it is not necessary to complete the heat insulation of the refrigerant pipe connection on site, and as a result, the work can be simplified, the safety is improved, and the heat insulating material is not required to be attached to the partition plate 9. Becomes In addition, since the partition plate 9 is brought close to the outer panel 12 to a position that is minimum necessary for housing the refrigerant pipe connection between the outer panel 12 and the outer panel 12, the bypass flow path from the knockout 13 is not provided. Even so, the required amount of air supply to the blower 3 can be ensured, and the formation of an opening surface on the partition plate 9 and the installation of a sub air filter become unnecessary, and the cost can be reduced.

In the first embodiment, the communication hole 8b of the drain pan 8 is formed at the right end of the partition plate 8a.
The water flow path 8f of the secondary drain tank 8c is inclined downward to the right, while the water flow path 8i of the secondary drain tank 8d is inclined downward to the left.
In practicing the present invention, the communication hole 8b is formed at the left end of the partition plate 8a, the water flow path 8f of the primary drain tank 8c is lowered to the left, and the water flow path 8i of the secondary drain tank 8d is set to the right. A falling slope may be used.

Further, a communication hole 8b is formed at the end of the partition plate 8a of the drain pan 8 of the first embodiment as a communication portion. However, the present invention is not limited to this. The condensed water generated in the drain pan 8 may be removed from the primary drain tank 8c to the secondary drain tank 8d at the end of the partition plate 8a.
What is necessary is just to be able to be led to.

Further, the indoor unit main body 1 of each of the above embodiments is provided.
Shows the case where the refrigerant pipe 15 is arranged on the right side. However, it goes without saying that the present invention can be similarly 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 first aspect of the present invention is divided into two drain tanks via the partition plate having the communication part formed at the end, and one drain tank is provided. In the upper part, a heat exchanger can be arranged at the upper part, and a water flow path inclined downward toward the communication part side is formed on the bottom surface, and the other drain tank has storage parts at both left and right ends. And a drain pipe connection port is provided, and a drain pan is formed between the two storage sections on the bottom surface and a water flow path inclined downward from the communication section side. Therefore, one of the drain pipe connection ports of the drain pan can be closed with a stopper, and the drain of the heat exchanger can be discharged outside the machine from the refrigerant pipe connected to the drain pipe connection port on the other side. The degree and stability are improved. In addition, since it is not necessary to pass the drain pipe through the fan installation space,
The drain pipe does not become a hindrance in services such as a blower, and workability is improved. In addition, two drain pans
And a heat exchanger in one drain tank.
Are installed in the other drain tank at the left and right ends, respectively.
The drain section and the drain pipe connection port are provided.
The bottom area of the bread is halved, and the change in the level of condensed water
To increase the efficiency of collecting condensed water.
Can be.

The indoor unit of the air conditioner according to the second aspect of the present invention is provided in parallel with the outer panel close to the outer panel, and stores the refrigerant pipe connection in a space formed between the indoor unit and the outer panel. Plate and the refrigerant distribution of this partition plate and the heat exchanger.
In front of the sub-storage tank for collecting drain condensed on the pipe connection
Attached to the main drain tank to collect the drain of the heat exchanger
And a drain pan. Therefore,
All the condensed water condensed on the heat exchanger, the refrigerant pipe connection and the partition plate can be collected in the drain pan and can be prevented from leaking to the outside of the indoor unit. Therefore, the construction can be simplified, the safety can be improved, and the heat insulating material need not be attached to the partition plate. In addition, since the partition plate is located close to the outer panel, the required air supply to the blower can be secured without providing a bypass channel from the knockout, forming an opening on the partition plate and mounting the sub air filter. Becomes unnecessary and cost can be reduced.

[Brief description of the drawings]

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.

FIG. 2 is a front view of an 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 as viewed obliquely from behind.

FIG. 4 is a cross-sectional view showing a pipe connection part in the indoor unit of FIG. 3 as viewed from a side.

FIG. 5 is a perspective view showing a main part of the drain pan of FIG. 4;

FIG. 6 is a perspective view of the indoor unit of the conventional air conditioner as viewed obliquely from behind.

FIG. 7 is a front view of the indoor unit in FIG. 6;

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

FIG. 9 is a perspective view showing a drain pan in the indoor unit of FIG. 6;

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit main body 2 Heat exchanger 8, 18 Drain pan 8a Partition plate 8b Communication hole 8c Primary drain tank 8d Secondary drain tank 8f, 8i Water flow channel 8g, 8j Drain storage part 8h, 8k Drain pipe connection port 9 Partition Plate 11 Piping connection space 12 Outer panel 16 Plug 18a Main storage tank 18b First sub storage tank 18d Second sub storage tank

Continuation of the front page (56) References JP-A-62-77526 (JP, A) JP-A-2-62311 (JP, U) JP-A-2-28018 (JP, U) JP-A-3-22668 (JP , Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 361

Claims (2)

(57) [Claims] 1. An indoor unit of an air conditioner, which is divided into two drain tanks through a partition plate having a communication portion formed at an end, and one of the drain tanks is provided with a heat exchanger at an upper portion. possible, and are water channel which slopes downwards towards the communicating side to the bottom is formed and also, the other of the drain tank respectively reservoir and drain pipe connection port on the left and right end portions are provided, An indoor unit for an air conditioner, comprising: a drain pan having a water flow path inclined downward from the communication portion side between the two storage portions on the bottom surface. 2. An indoor unit of an air conditioner, comprising: a partition plate provided in parallel with an outer panel and containing a refrigerant pipe connection portion in a space formed between the outer panel and the partition plate; And a sub-storage tank for collecting drain condensed in the refrigerant pipe connection portion of the heat exchanger and the drain of the heat exchanger.
An indoor unit for an air conditioner, comprising: a drain pan attached to a main drain tank to be collected .