JPH0921544A - Indoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner, capable of securing comfortable air conditioning by achieving effective treatment of drain and preventing dew from being produced, and capable of reducing the cost of the indoor unit by simplifying the manufacture and assembly of the same. SOLUTION: An indoor unit is provided with a unit main body 1 having inlet ports 2a, 2b and an outlet port 20 and being formed of a front panel 2 and a rear plate 3, a heat exchanger 7 which is formed into an inverted V-shape when viewed from its side face and composed of a front side heat exchanger 7A and a rear side heat exchanger 7B, and a blower 11 for sucking air to be cooled in an air-conditioning chamber through the inlet ports to be allowed to flow through the heat eschangers and blowing the cooled air from the outlet port through an air blow passage after heat-exchanging is carried out. Further, the indoor unit is provided with a fore drain pan 9A and an aft drain pan 9B, each being arranged under the front side heat exchanger and the rear side heat exchanger, respectively, and right and left gutters which are positioned inside the air blow passage and mounted so as to extend between the fore drain pan and the aft drain pan for guiding and sending drain collected in the aft drain pan into the fore drain pan.

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 having a heat exchanger formed in an inverted V shape, and more particularly to a drain water treatment structure dropped from the heat exchanger. Regarding the improvement of.

[0002]

2. Description of the Related Art An air conditioner generally used comprises an indoor unit arranged in a room to be air-conditioned and an outdoor unit arranged outdoors, and these units are connected to each other by a refrigerant pipe and electric wiring. .

From the user side, there is a great demand for miniaturization of these units and reduction of the installation space, and each maker must increase the heat exchange capacity while satisfying such conditions.

As one of the solutions, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 4-106425, a front heat exchanger is formed by forming an inverted V shape so as to face a main body and a front panel. There is an indoor unit of an air conditioner in which a heat exchanger including a rear heat exchanger is arranged, and a blower is arranged below the heat exchanger.

With the heat exchanger of such a form, a sufficient heat exchange area can be secured and the height dimension of the heat exchanger itself can be suppressed, whereby the height dimension of the unit main body can be reduced. There is.

[0006]

If a heat exchanger formed in such an inverted V shape is provided, drain water is simultaneously supplied to the front heat exchanger and the rear heat exchanger due to the heat exchange action. Is generated. These drain waters are dripped in the drain pan arranged under each heat exchanger to collect water.

Although there is no problem in treating drain water, a front drain pan for receiving drain water of the front heat exchanger and a rear drain pan for receiving drain water of the rear heat exchanger are provided for the front panel and the rear plate. Are manufactured and assembled separately.

As a result, the number of parts is increased, the cost of the mold required to manufacture each of them adversely affects the cost, and noise (peep noise) due to thermal expansion or the like from the connected parts in the assembled state. ) Occurs.

The drain water collected in the rear drain pan under the rear heat exchanger is drained from a plurality of drain ports provided here, but the inside of the rear drain pan becomes negative pressure when the blower is rotated. Therefore, it sucks raw air before heat exchange from the drain port.

As a result, dew condensation easily occurs on the outer peripheral surface of the rear drain pan, and these dew drops may be dropped into the air passage and blown out together with the heat exchange air into the air-conditioned room, which impairs comfortable air conditioning.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat exchanger formed in an inverted V shape so as to be produced by this heat exchanger. The present invention intends to provide an indoor unit of an air conditioner which receives drain water to prevent the formation of dew condensation, secures comfortable air conditioning, simplifies manufacturing and assembling, and achieves cost reduction.

[0012]

In order to satisfy the above object, an indoor unit of an air conditioner according to the present invention has a suction port and a discharge port as claimed in claim 1, and comprises a front panel and a rear plate. It is composed of a unit main body, an inverted V-shape arranged in the unit main body in a side view, and a front heat exchanger located on the front side of the unit main body and a rear heat exchanger located on the rear side. Heat exchanger,
Front air heat that constitutes the heat exchanger, including a blower that sucks air in the air-conditioned room from the suction port and circulates it in the heat exchanger, and exchanges heat there, and then blows air from the outlet through the air passage. The front drain pan and the rear drain pan, which are respectively placed under the exchanger and the rear heat exchanger, are located inside the air passage, and are installed across the front drain pan and the rear drain pan, and the water is collected in the rear drain pan. And a gutter that guides the drain water to the front drain pan.

According to a second aspect of the present invention, the front drain pan and the rear drain pan according to the first aspect, and the gutter portion that connects them are all integrally formed with the rear plate.

According to a third aspect of the present invention, the ribs forming the front drain pan and the rear drain pan according to the second aspect are formed so as to project at the same angle in the same direction. As a fourth aspect, the gutter portion according to the first and second aspects is provided along a side end portion of the air passage.

According to a fifth aspect of the present invention, the end portion of the rear drain pan according to the fourth aspect is a drain port body portion that opens downward, and the gutter portion has a drain port body portion of the rear drain pan at the upper end thereof. A receiving part for receiving drain water drained from and a vertical part communicating with the receiving part and located on the back side of the blower, and extending from the lower end of the vertical part along the lower side of the blower and communicating with the front drain pan. It is characterized by comprising a horizontal portion.

Claims 4 and 5 are defined as claim 6.
The above-mentioned gutter part is characterized in that a lid for closing the upper opening is fitted along the upper opening. Claim 7
As a result, the lid according to claim 6 is characterized in that the end portion of the portion that closes the vertical portion of the trough portion is a pipe portion, and is fitted into the drainage outlet body portion of the rear drain pan. To do.

Claims 6 and 7 are defined as claim 8.
The above described lid is characterized in that a motor retainer for pressing and fixing the fan motor of the blower to the rear plate is connected via a hinge portion provided at an end portion on the front drain pan side.

Claims 6 and 7 are as claims 9.
The above described lid is characterized in that a bearing base having a bearing of the blower is connected via a string portion provided at an end portion on the front drain pan side.

In a tenth aspect of the present invention, the lid according to the sixth to ninth aspects is characterized in that an upper surface thereof serves as a lap portion which wraps with an end plate of a cross flow fan which constitutes the blower.

By providing the means for solving the above problems, in the invention of claim 1, the drain water is made to pass through the inside of the air passage, so that the drain water dropped from the rear heat exchanger is discharged. There is no need for a hole to be released to the outside, so it is possible to avoid sucking in fresh outside air and to prevent dew condensation.

In the second aspect of the present invention, by integrating the front and rear drain pans, it is possible to improve the assembling accuracy of the blower system such as the blower and the nose, and to prevent the generation of noise (pitch noise) due to thermal expansion. .

In the third aspect of the invention, the front and rear drain pans have the same projecting direction. Therefore, the molds can be manufactured in the same direction so that the molds can be removed from the molds with a simple structure.

In the invention of claim 4, since the gutter portion is located at the side end portion of the air passage, the influence on the air blowing performance is small and the influence of the wind of the air blower on the drain water is small.

In the invention of claim 5, the rear drain pan has a negative pressure because of its position setting, and the air from the rear drain pan is sucked from the drain port body, but this air has already been absorbed by the heat exchanger. It is the air that is heat-exchanged and guided through the air passage, and there is no dew formation.

In the invention of claim 6, since the upper opening of the gutter is closed by the lid, the entry of dust into the gutter is prevented, and clogging of the gutter due to the dust is prevented. Claim 7
In the invention, since the lid corresponding to the vertical portion of the gutter is formed in a pipe shape, drain water does not seep out to the outside from the gap between the lid and the gutter.

According to the eighth aspect of the invention, the motor pressing member can move from the rear plate to the front side, and the fan motor can be easily cleaned and replaced. Then, the two parts of the lid and the motor retainer are integrally formed, and the number of parts and the cost are reduced.

In the invention of claim 9, the bearing base can freely move, and maintenance such as replacement of the blower can be easily performed. And 2 of the lid and the bearing base
Since the parts are integrally formed, the number of parts and the cost can be reduced. In the invention of claim 10, the upper surface of the lid serves as a wrap portion that wraps with the end plate of the cross flow fan that constitutes the blower, so that it is possible to reliably prevent the deterioration of the blowing performance.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an indoor unit of the air conditioner is configured. A unit main body 1 which is an air conditioner main body includes a front panel 2 and a rear plate 3 described later. A front suction port 2a in which a grill 4 is fitted is opened on the front surface side of the front panel 2, and an upper suction port 2b in which a grill 5 is fitted is opened on the upper surface.

Inside the unit body 1, the suction ports 2a, 2
An air filter 6 that is bent in a gentle arc shape so as to face each other over b and a heat exchanger 7 that is formed in an inverted V shape are arranged.

The heat exchanger 7 comprises a front heat exchanger 7A facing the front suction port 2a and a rear heat exchanger 7B facing the upper suction port 2b. In particular, the auxiliary heat exchanger 8 is arranged along the upper surface of the rear heat exchanger 7B,
It is interposed between the upper suction port 2b.

Front heat exchanger 7 which constitutes this heat exchanger 7.
The lower end of A is at a low position, and the front drain pan 9A is arranged at the lower part thereof, while the lower end of the rear heat exchanger 7B is at a high position, and the rear drain pan 9B is arranged at the lower part thereof. These front and rear drain pans 9A and 9B are the same as the rear plate 3 described above.
As shown in FIG. 10, a rib 91A that forms the front drain pan 9A and a rib 91B that forms the rear drain pan 9B project in the same direction. In the figure, 90A to 90E are molds for injection molding the rear plate 3.

The heat exchanger 7 is formed in an inverted V shape inside the heat exchanger 7, that is, it is arranged between the front heat exchanger 7A and the rear heat exchanger 7B so as to be covered by these heat exchangers. The indoor blower 11 is arranged.

As shown in FIG. 2, the indoor blower 11 is also provided.
Is a lateral flow fan 12 having the same axial dimension as the width dimension of the heat exchanger 7, and the end plate 1 on one side of the lateral flow fan 12.
Fan motor 1 connected to 2b via a rotary shaft 13a
3 and a bearing 14 for pivotally supporting a support shaft 12a projecting from the end plate 12c on the other side of the cross-flow fan 12.

On the other hand, the first blower support portion 15 is integrally formed on one side portion (right side portion) in the longitudinal direction of the rear plate 3, and the second blower portion is formed on the other side portion (left side portion). The support portion 16 is integrally formed.

The inside of each of the blower support portions 15 and 16 is formed as a recess with a narrow width, and these recesses are referred to as a right gutter 17A and a left gutter 17B. An air passage 18 is formed between the gutter portions 17A and 17B, and reinforcing ribs 19 are provided at a predetermined interval in the longitudinal direction.

A blowout port 20 is opened along the front end of the air passage 18. The front drain pan 9A is provided along the front end of the outlet 20, and the rear drain pan 9B is provided along the upper side of the blower passage 18.

The left and right gutters 17A and 17B have upper ends communicating with both end portions of the rear drain pan 9B and lower end portions communicating with both end portions of the front drain pan 9A. That is, both the gutter portions 17A and 17B form a communication passage that connects the rear drain pan 9B and the front drain pan 9A.

A fan motor 13 constituting the indoor blower 11 is supported on the first blower support portion 15, and the fan motor 13 is attached to the first blower support portion 15 by a motor pressing member 21. It is designed to be fixed.

A bearing base 22 to which the bearing member 14 constituting the indoor blower 11 is supported and fixed is attached to the second blower support portion 16. The motor retainer 21 and the bearing base 22 have a right lid 23A and a left lid 2 respectively.
3B are integrally connected. These left and right lids 23A,
23B are respectively fitted in the left and right gutter portions 17A and 17B formed inside the blower support portions 15 and 16 to close the upper opening.

Next, the support structure of the fan motor 13 in the first blower support portion 15 will be described in detail. As shown in FIG. 3, a blower path end plate 25 having an arcuate inner edge is erected at a side end portion of the blower path 18, and the first blower path end plate 25 is spaced apart from the blower path end plate 25 by a predetermined distance. A backing plate 26A that constitutes the blower support portion 15 is provided upright.

The space between the air duct end plate 25 and the pad plate 26A is the right gutter 17A. In other words, the right gutter 17A is formed as a recess between the airflow path end plate 25 and the pad plate 26A, and is integrally formed with the rear plate 3 along the inner end of the airflow path 18.

As shown in FIG. 9, a drain port body portion 27 opening downward is provided at a side end portion of the rear drain pan 9B,
It communicates with the receiving portion 28a which is the upper end of the right gutter portion 17A. The lower portion of the receiving portion 28a is a vertical portion 28b, which extends from the lower end of the vertical portion 28b in a substantially horizontal direction, and the front end portion thereof is a horizontal portion 28c communicating with the front drain pan.

The indoor blower 1 in the assembled state
The vertical part 28b of the right gutter 17A is located on the back side of the cross flow fan 12 and the horizontal part 28c is located on the lower side of the cross flow fan 12 with respect to the cross flow fan 12 that constitutes the first embodiment.

As shown in FIG. 3 again, the above-mentioned pad plate 26A
The edge of is formed in a semicircular shape. A receiving plate 26B is provided upright in parallel with the contact plate 26A, and this edge is formed in a semicircular shape which is somewhat larger than the edge of the contact plate.

The side portion of the receiving plate 26B is formed in an arc shape having a large radius of curvature, and this side is called a support portion 28. The right lid 23A is fitted to the right gutter 17A. That is, each of the receiving portion 28a, the vertical portion 28b, and the horizontal portion 28c that form the right gutter portion 17A has a U-shaped cross section and an open upper portion, and the opening is formed in an inverted U-shaped cross section. The right lid 23A is closed.

The right lid 23A, particularly the end portion corresponding to the receiving portion 28a and the vertical portion 28b, has a rectangular cross section.
9 is provided. Then, the pipe portion 29 is fitted into the drain port body portion 27 of the rear drain pan 9B.

The end of the right lid 23A opposite to the pipe portion 29 is integrally connected to the motor retainer 21 via a so-called PP hinge portion 30. The motor retainer 21 includes a retainer portion 31 formed in a semicircular shape, retainer plates 32a and 32b integrally provided in a substantially central portion of the retainer portion 31 with a narrow gap therebetween, and a right portion. Lid 2
3A, and a closing plate portion 33 integrally projecting outward along a side edge of the pressing portion 31 at a portion facing 3A.

The inner edge of the pressing plate 32a has the contact plate 26.
The pressing plate 3 is formed in a semicircular shape having the same curvature as the inner edge of A.
The inner edge of 2b is formed in a semicircular shape having the same curvature as the inner edge of the receiving plate 26B. Further, the pressing portion 31 has the same radius of curvature as the inner edge of the right lid 23A.

As shown in FIG. 4, the right lid 23A is fitted in the right gutter 17A, and the upper opening of the right gutter is closed. 1
Wrap with 2b. When the motor retainer 21 is pivotally displaced rearward with the hinge portion 30 as a fulcrum, a circular portion is formed by the inner edge of the right lid 23A and the retainer portion 31.

At the same time, the backing plate 26A and one pressing plate 3
The inner edges of 2a, the receiving plate 26B, and the other pressing plate 32b face each other to form a circular portion having a predetermined diameter, and the other pressing portion 31 and the supporting portion 28 form one circular portion.

As shown in FIG. 5, the indoor blower 1 is attached to the rear plate 3.
1 and the heat exchanger 7 are arranged. That is, as described above, the right lid member 23A is fitted to the right gutter portion 17A, and the motor pressing member 21 is rotated toward the front side with the hinge portion 30 as a fulcrum to open the first blower support portion 15. .

Then, the fan motor 13 constituting the indoor blower 11 is placed on the first blower support portion 15, the motor pressing member 21 is rotated to move along the peripheral surface of the fan motor 13, and the rear plate is fixed with the fixing screw 35. Attach and fix to 3. (Fixed portion is shown in FIG. 9) In this state, the peripheral surface of the fan motor 13 is fitted into a circular portion formed by the support portion 28 of the first blower support portion 15 and the holding portion 31 of the motor holding tool 21. To be done. A peripheral surface of a boss portion (not shown here), which is provided so as to project from one side portion of the fan motor 13, is fitted into circular portions formed by inner edges of the receiving plate 26B and the pressing plate 32b.

The axial position of the fan motor 13 is determined by the end surface of the boss contacting the circular portions formed by the inner edges of the contact plate 26A and the pressing plate 32a. The boss portion 13b protruding from the front side of the fan motor 13 has two
The fan motor 13 is supported by the separate pressing member 36 that is divided into pieces, and thus the fan motor 13 is securely attached and fixed to the rear plate 3.

As will be described later, after the bearing 14 is attached, the heat exchanger 7 is arranged at a predetermined position, thereby completing the assembly shown in FIG. Next, the bearing 1 in the second blower support portion 16
The support structure of No. 4 will be described in detail.

As shown in FIG. 6, a blower path end plate 37 having an arcuate inner edge is erected at a side end portion of the blower path 18, and the blower path end plate 37 is spaced apart from the blower path end plate 37 by a predetermined distance. The receiving plate 38 which comprises the 2nd blower support part 16 is erected.

The space between the air passage end plate 37 and the receiving plate 38 is the left gutter 17B. In other words, the left gutter portion 17B is formed as a recess between the air passage end plate 37 and the receiving plate 38, and is integrally formed with the rear plate 3 along the inner end portion of the air passage 18.

The rear drain pan 9B side end portion on the side of the second blower support portion 16 is a drain port body portion 27 similar to that of the first blower portion 15 described above, and the upper end of the left gutter portion 17B. To the receiving portion 28a. And the receiving portion 28
The a communicates with the horizontal portion 28c via the vertical portion 28b. Therefore, in the assembled state, the vertical portion 28b is located on the back side of the cross flow fan 12, and the horizontal portion 28c is located on the lower side of the cross flow fan 12.

The left lid member 23B that closes the upper opening of the left gutter 17B is fitted. Since this left lid 23B also has the same shape as the first blower unit 15 described above, the same numbers are given and a new description is omitted.

The bearing base 22 is integrally connected to the end portion on the side opposite to the pipe portion 29 via a string portion 39. The bearing base 22 has a ring-shaped fitting portion 40.
And a plurality of mounting piece portions 42 ... And a plurality of screw hole portions 43 .. .

As shown in FIG. 7, with the left lid 23B fitted in the left gutter 17B and the upper opening of the left gutter being closed, the upper surface of the left lid 23B is the end plate 12c of the cross flow fan 12.
Wrap with Then, the bearing base 22 is brought into contact with the receiving plate 38 with the string portion 39 as a fulcrum, and the end of the closing plate portion 41 is placed on the upper edge of the receiving plate 38. In this state, the closing plate portion 41
The mounting hole of the mounting piece portion 42 provided on the front surface faces a screw hole portion (not shown) formed on the rear plate 3 similarly to the side of the first blower support portion 15.

As shown in FIG. 8, the indoor blower 1 is attached to the rear plate 3.
1 and the heat exchanger 7 are arranged. That is, as described above, after fitting the left lid 23B into the left gutter 17B,
Using the string portion 39 as a fulcrum, the bearing base 22 is once allowed to escape from the left lid 23B to the outside, and the second blower support portion 16 is emptied.

The bearing 14 which constitutes the indoor blower 11 is fitted into the fitting portion 40 of the bearing base 22, and the bearing base 22 is moved from the outside toward the left lid 23B to support the spindle 12a of the cross flow fan 12. Is inserted into the bearing tool 14.

After that, the bearing base 22 is placed on the second blower support portion 16 so that the mounting hole of the attachment piece portion 42 is necessarily provided with the second blower support portion 16 with a screw. Since it communicates with the hole, the bearing base 22 is attached and fixed to the rear plate 3 with a fixing screw.

Then, the heat exchanger 7 is arranged at a predetermined position, the mounting hole provided in the heat exchanger end plate 7c is opposed to the screw hole portion 43 of the bearing base 22, and the fixing screw 35 is attached.
Attach and fix with. Therefore, the bearing base 22 is mounted and fixed to the rear plate 3 while supporting the bearing tool 14.

The indoor unit constructed in this manner performs the refrigerating cycle operation for the heat exchanger 7 and drives the indoor blower 11 to rotate the cross flow fan 12, whereby the indoor air to be conditioned is sucked in at the front. It is sucked into the unit main body 1 through the port 2a and the upper suction port 2b, passes through the heat exchanger 7, and exchanges heat. The heat-exchanged air after the heat exchange is guided to the air passage 18 and blown out from the air outlet 20 into the air-conditioned room.

The motor retainer 21 and the closing plate portions 33 and 41 integrally projecting from the bearing base 22 are provided.
Is inserted into the inner end of the heat exchanger 7 formed in an inverted V shape. Therefore, the space formed at the side end portion of the inverted V-shaped heat exchanger 7 is closed to prevent intake of raw air from here.

In the cooling operation, drain water is generated and dripped in the heat exchanger 7. The drain water dripping from the front heat exchanger 7A is received by the front drain pan 9A, and the rear heat exchanger 7B.
The drain water dripping from the auxiliary heat exchanger 8 is received by the rear drain pan 9B.

Since the rear drain pan 9B is at a higher position than the front drain pan 9A, the drain water collected in the rear drain pan 9B is left and right gutter portions 17A formed at both end portions,
It is distributed to 17B and collected in the front drain pan 9A. Then, the drainage treatment is collectively performed from the front drain pan 9A to the outside of the room.

In this way, the left and right gutters 17 for guiding the drain water
Since A and 17B are located inside the air passage 18 through which the heat-exchanged air passes, the left and right gutters 17 are cooled by the drain water.
There is no dew on A and 17B. Further, the external drain hole is not required in the rear drain pan 9B as in the configuration of the conventional example, so that it is not necessary to suck the fresh raw air from the outside and there is no dew phenomenon.

By integrally forming the front and rear drain pans 9A and 9B on the rear plate 3, it is possible to improve the assembling accuracy for the blower system such as the blower 11 and the nose.
Since there is no connecting part, noise (pitch noise) due to thermal expansion does not occur.

Further, ribs 91A forming the front drain pan 9A and ribs 91B forming the rear drain pan 9B are provided so as to project in the same direction. From this, as shown in FIG. 10, since the front drain pan 9A and the rear drain pan 9B have the same die-cutting direction, among the molds 90A to 90E for injection-molding the rear plate 3, particularly the mold 90A is It is possible to configure the front drain pan 9A and the rear drain pan 9B with a single mold without separately configuring them.

The left and right gutters 17A and 17B are connected to the air passage 18
Since it is located at the side end of the blower, it has less influence on the blowing performance and less influence on the drain water by the wind of the blower 11.

The air in the rear drain pan 9B is drained 27
Although it is not possible to prevent the air from being sucked into the left and right gutter portions 17A, 17B from this, this air is the air that has already been heat-exchanged by the heat exchanger 11, and therefore dew does not occur.

Since the upper surface openings of the left and right gutter portions 17A and 17B are closed by the left and right lids 23A and 23B, respectively,
Dust can be reliably prevented from entering the trough, and clogging of the interior due to dust can be prevented.

That is, when the U-shaped lid is used for the vertical portion 28b, the left and right lid members 23A and 23B and the left and right gutter portion 17 are provided.
There is a risk that drain water may seep out from the gap between A and 17B, but since it is the pipe part 29, the left and right gutter parts 17A, 1
The drain water does not enter the gap between the vertical portion 28b of 7B and the left and right lids 23A and 23B, and does not seep out from this gap.

Since the upper surfaces of the left and right lids 23A, 23B are wrapped with the left and right end plates 12b, 12c of the cross flow fan 12, the escape of air from the air passage 18 to the vicinity of the left and right end plates 12b, 12c is prevented as much as possible. Therefore, it is possible to reliably prevent the deterioration of the blowing performance.

The motor retainer 21 has a hinge portion 30.
It can be moved from the rear plate 3 side to the front side with the fulcrum as a fulcrum, whereby maintenance work such as cleaning and replacement of the cross flow fan 12 can be easily performed.

It is necessary for the motor pressing member 21 to be able to move for the above work, but if the right lid member 23A moves following it at this time, there is a danger that it will come out of the fitted right gutter portion 17A. , Don't move.

Therefore, the motor retainer 21 and the right lid 23A are connected via the hinge portion 30 so that the movement of the motor retainer 21 does not affect the right lid 23A. Furthermore, the right lid 23A and the motor retainer 21
The parts are integrally formed to reduce the number of parts and the cost.

The bearing base 22 can be moved back and forth and left and right with respect to the rear plate 3, so that maintenance work such as cleaning and replacement of the cross flow fan 12 can be easily performed.

The bearing base 22 needs to be able to move for the above work, but should not move because the left lid 23B may follow and move out of the left gutter 17B at this time.

Therefore, the bearing base 22 and the left lid 1
7B are connected via the string portion 39 so that the movement of the bearing base 22 does not affect the left lid 17B. Further, the left lid 17B and the bearing base 22 are integrally formed into two parts, so that the number of parts and the cost can be reduced.

[0083]

As described above, according to the invention of claim 1, since the drain water is made to pass through the inside of the air passage,
A hole for temporarily discharging the drain water dropped from the rear heat exchanger to the outside is not necessary, so that it is not necessary to suck the outside raw air and there is no dew phenomenon.

Moreover, since the drain water passes through the inside of the air passage through which the heat-exchanged air passes, dew does not attach to the inside of the air passage due to the cooled drain water. According to the second aspect of the present invention, by assembling the front and rear drain pans together, it is possible to improve the assembling accuracy with respect to the blower system such as the blower and the nose, and to prevent noise (pitch noise) due to thermal expansion.

According to the third aspect of the invention, in both the front and rear drain pans, the protruding directions of the ribs forming the drain pan are the same direction and the same angle.
The direction of die removal from the die is the same, so a die with a simple structure is sufficient.

According to the invention of claim 4, since the gutter portion is located at the side end portion of the air passage, it has little influence on the air blowing performance and the influence of the wind of the air blower on the drain water is small.

According to the fifth aspect of the invention, the rear drain pan has a negative pressure due to the setting of its position, and the air from the rear drain pan is sucked into the blower passage from the drain port body portion. Is the air that has already been heat-exchanged by the heat exchanger and guided through the air passage, and there is no dew formation.

According to the sixth aspect of the present invention, since the top opening of the gutter is closed by the lid, the entry of dust into the gutter is prevented, and clogging of the gutter due to the dust is prevented. Claim 7
According to the invention, since the lid corresponding to the vertical portion of the gutter is formed on the pipe, the drain water does not seep out to the outside from the gap between the lid and the gutter.

According to the invention of claim 8, the motor retainer can be moved from the rear plate to the front side, and the fan motor can be easily cleaned and replaced. Then, the two parts of the lid and the motor retainer are integrally formed, and the number of parts and the cost are reduced.

According to the invention of claim 9, the bearing base can freely move, and maintenance such as replacement of the blower can be easily performed. And 2 of the lid and the bearing base
Since the parts are integrally formed, the number of parts and the cost can be reduced. According to the invention of claim 10, the upper surface of the lid serves as a wrap portion that wraps with the cross flow fan that constitutes the blower, so that it is possible to reliably prevent the deterioration of the blowing performance.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an air conditioner indoor unit showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating a support structure of an indoor blower with respect to a rear plate, showing the same embodiment.

FIG. 3 is an exploded perspective view of a rear plate, a right lid member, and a motor pressing member, showing the same embodiment.

FIG. 4 is a perspective view showing the same embodiment in a state where a right lid member is fitted to a right gutter portion of a rear plate and a motor pressing member is closed.

FIG. 5 is a perspective view of the motor retainer side with the indoor blower and the heat exchanger attached to the rear plate, showing the embodiment.

FIG. 6 is an exploded perspective view of a rear plate, a left lid and a bearing base showing the same embodiment.

FIG. 7 is a perspective view showing the same embodiment in a state where a lid is fitted to a left gutter of a rear plate and a bearing base is closed.

FIG. 8 is a perspective view of the bearing base side with the indoor blower and the heat exchanger attached to the rear plate, showing the embodiment.

FIG. 9 is a view showing the embodiment, in which the lid is attached to the rear plate.

FIG. 10 is a view for explaining the manufacture of the rear plate, showing the same embodiment.

[Explanation of symbols]

2a, 2b ... (front part, upper part) inlet port, 20 ... outlet port, 4 ... front panel, 3 ... rear plate, 1 ... unit body, 7
A ... Front heat exchanger, 7B ... Rear heat exchanger, 7 ... Heat exchanger, 18 ... Blower, 11 ... Indoor blower, 9A ... Front drain pan, 9B ... Rear drain pan, 91A, 91B ... Rib, 1
7A ... right gutter part, 27 ... drainage port body part, 28a ... receiving part, 2
8b ... Vertical part, 28c ... Horizontal part, 23A ... Right lid, 30
... Hinge part, 21 ... Motor pressing tool, 23B ... Left lid tool,
39 ... string part, 22 ... bearing base.

Claims (10)

[Claims] 1. A unit main body comprising a front panel and a rear plate, which is provided with a suction port and a blow-out port, and is arranged in the unit main body and has an inverted V shape in a side view. A heat exchanger composed of a front side heat exchanger located on the side and a rear side heat exchanger located on the rear side, and the air in the air-conditioned room is sucked from the suction port and circulated to the heat exchanger, where In an indoor unit of an air conditioner equipped with a blower that performs heat exchange and then blows air from an outlet through an air blow passage, the front heat exchanger and the rear heat exchanger that constitute the above heat exchanger are respectively disposed below the heat exchanger. A front drain pan and a rear drain pan, which are located inside the above-mentioned air passage and are installed across the front drain pan and the rear drain pan, and the drain water collected in the rear drain pan is distributed to the front drain pan. An indoor unit for an air conditioner, comprising an internal gutter. 2. The indoor unit for an air conditioner according to claim 1, wherein all of the front drain pan, the rear drain pan, and the trough portion that connects them are integrally formed with the rear plate. 3. The indoor unit of an air conditioner according to claim 2, wherein the ribs forming the front drain pan and the rear drain pan are formed to project at the same angle in the same direction. 4. The indoor unit for an air conditioner according to claim 1, wherein the gutter is provided along a side end of the air passage. 5. An end portion of the rear drain pan is a drain port body portion that opens downward, and the gutter portion receives drain water drained from the drain port body portion of the rear drain pan at its upper end portion. It comprises a receiving part and a vertical part communicating with the receiving part and located on the back side of the blower, and a horizontal part extending from the lower end of the vertical part along the lower side of the blower and communicating with the front drain pan. The indoor unit of the air conditioner according to claim 4, wherein 6. The indoor unit for an air conditioner according to claim 4, wherein the gutter is fitted with a lid that closes the upper opening along the upper opening. . 7. The lid member is characterized in that the end portion of the portion that closes the vertical portion of the trough portion is a pipe portion, and the lid member is fitted into the drainage outlet body portion of the rear drain pan. Item 6. An indoor unit of an air conditioner according to Item 6. 8. A motor pressing member for pressing and fixing a fan motor of the blower to a rear plate is connected to the lid member via a hinge portion provided at an end portion on the front drain pan side. An indoor unit for an air conditioner according to claim 6 or 7. 9. The bearing base having the bearing of the blower is connected to the lid via a strap portion provided at an end portion on the front drain pan side. Indoor unit of the air conditioner described. 10. The indoor unit for an air conditioner according to claim 6, wherein the lid has a top surface that serves as a wrap portion that wraps with an end plate of a cross flow fan that constitutes the blower. .