JP6400210B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to a dew condensation suppressing structure in an air path of the indoor unit.

  A wall-mounted air conditioner installed on an indoor wall surface has a heat exchanger inside the main unit, and the air is cooled by sucking indoor air from the suction port located above the main unit and passing it through the heat exchanger. The temperature of the air is changed by heating or warming. Then, the air whose temperature has been changed is blown into the room from a blow-out port provided below the main body. By repeating this, the indoor environment is adjusted.

  Such air conditioners include a type using a cross flow fan and a type using a propeller fan. In the type using the cross flow fan, the number of air passages from the suction port to the blowout port is one because the air flow flowing in from the suction port passes through the heat exchanger and then reaches the blowout port. It is. On the other hand, the number of air paths in the type using the propeller fan is divided into a plurality of air flows flowing from the suction port after passing through the heat exchanger, and each air flow flows toward the outlet, Yes (see, for example, Patent Document 1).

  In the indoor unit of the air conditioner of Patent Document 1, a plurality of divided heat exchangers are inverted V-shaped (FIG. 9 of Patent Document 1), N-shaped (FIG. 10 of Patent Document 1), M-shaped (Patent) The heat exchanger is mounted in combination with a shape such as FIG. 13 of Document 1) or a W shape (FIG. 11 of Patent Document 1). In the inverted V shape, there is one air passage, but there are two for the N shape and the M shape, and three for the W shape. And the efficiency of heat exchange was raised by making many division | segmentation heat exchangers contact the indoor air inhaled from the indoor unit upper part.

JP 2012-37085 A

  In Patent Document 1, since the plurality of divided heat exchangers are not all at the same temperature, a temperature difference occurs in the airflow of each air passage after passing through each divided heat exchanger. For this reason, depending on the shape of the heat exchanger, condensation may occur in the air passage during the cooling operation, and drain water due to the condensation may fall into the room from the air outlet with the air flow after heat exchange. In this regard, each case of each shape of the heat exchanger will be described below.

  When the heat exchanger has an inverted V shape (FIG. 9 of Patent Document 1), since there is one air passage, there is no shunt and no condensation occurs due to a temperature difference.

  When the heat exchanger is N-shaped (FIG. 10 of Patent Document 1) or M-shaped (FIG. 13 of Patent Document 1), the air flow is divided into two air paths. However, since there is a large opening outlet directly under the two air paths, each air flow is blown into the room (outside the indoor unit) before being affected by the temperature difference between the air flows. For this reason, the possibility of dew condensation is low.

  When the heat exchanger is W-shaped (FIG. 11 of Patent Document 1), the air flow is divided into three air paths. As for the two air passages in front of the indoor unit, as in the case of the N-shaped and M-shaped, there is a blow outlet directly under the two air passages, so the possibility of dew condensation is low. However, since it is necessary to provide piping space for storing piping for connecting the indoor unit and outdoor unit, pipe for draining drain water, etc. in the lower part of the back of the casing, The air passage is configured such that the air outlet is not located immediately below the air passage. For this reason, the third air passage is an air passage that avoids the piping space, and the air flow of the third air passage is guided from the back side to the front lower side, and from the air outlet to the room (in the indoor unit). To the outside). For this reason, when a contact point is formed between the air flow that flows forward and downward in the third air passage and the air flow that flows directly downward in the second air passage, there is a temperature difference between the two air flows. In addition, condensation occurs near the contact.

  As described above, the dew condensation generated in the air passage due to the temperature difference of each air flow after passing through the heat exchanger cannot be basically recovered, and thus falls from the air outlet together with the air after heat exchange.

  The present invention has been made in order to solve the above-described problems. In an indoor unit of an air conditioner having a plurality of air paths after passing through a heat exchanger, the heat exchanger is provided inside the indoor unit during cooling operation. An object of the present invention is to provide an indoor unit of an air conditioner that can prevent dew condensation in an air passage even when a temperature difference occurs in each air flow after passing through the air channel.

An indoor unit of an air conditioner according to the present invention includes a main body having a suction port at an upper part and a blower outlet at a lower part, a fan installed in the main body, a heat exchanger installed in the main body, and a heat exchanger. A drain pan that receives the generated drain water. The main body has a first air passage using the heat exchanger side drain pan as the air passage wall and a second air passage using the air passage side drain pan as the air passage wall, and air from the fan sucked from the air inlet The flow is divided into a plurality of air flows after passing through the heat exchanger, and each divided air flow is flowed to the first air passage and the second air passage, and then merged and blown out from the outlet. Of the road and the second wind path, the air flow with the lower temperature flows during cooling operation Air passage walls constituting the air path side that is, the temperature is the higher potato such exposed air path where the air flow flows in.

  According to the present invention, in an indoor unit of an air conditioner having a plurality of air paths after passing through a heat exchanger, a temperature difference has occurred in each air flow after passing through the heat exchanger inside the indoor unit during cooling operation. Even in this case, condensation in the air passage can be prevented.

1 is an overall perspective view of an indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention. It is a schematic longitudinal cross-sectional view of FIG. It is a perspective view of the drain pan 40 of FIG. FIG. 3 is an exploded perspective view of the drain pan 40 of FIG. 2. It is the figure which combined and showed the perspective view of the drain pan 40 cut | disconnected by the AA cross section of FIG. 3, and the partial enlarged view of this perspective view. It is explanatory drawing of the air path of the indoor unit 100 of the air conditioner which concerns on Embodiment 1 of this invention. It is an indoor unit schematic sectional drawing of the conventional air conditioner provided with the reverse V-shaped heat exchanger 200. It is a schematic sectional drawing of the indoor unit of the conventional air conditioner provided with the N-shaped heat exchanger 210. It is a schematic sectional drawing of the indoor unit of the conventional air conditioner provided with the M-shaped heat exchanger 220. It is the figure which combined and showed the enlarged perspective view around a drain pan including the part which the air path 6b and the air path 6c of FIG. 6 cross | intersect, and the figure which expanded and simplified the part of this perspective view. It is a figure which shows a comparative example, and is the figure which showed the structural example in which dew condensation occurs. It is the figure simplified while expanding the drain pan circumference | surroundings including the part which the air path 6b and the air path 6c of FIG. 6 cross | intersect.

Embodiment 1 FIG.
FIG. 1 is an overall perspective view of an indoor unit 100 for an air conditioner according to Embodiment 1 of the present invention. FIG. 2 is a schematic longitudinal sectional view of FIG. In the first embodiment, the front side in FIG. 1 is described as the front side (front side), and the back side is described as the back side (rear side).
The indoor unit 100 supplies conditioned air (air that has been heat-exchanged by a heat exchanger 30 described later) to an air-conditioning target area such as a room by using a refrigeration cycle that circulates refrigerant. A main body 100a of the indoor unit 100 includes a rear case 1 fixed to an indoor wall surface, a housing 2 attached to the front surface of the rear case 1 with screws, and a front surface removably attached to the front surface of the housing 2. It has a design panel 3. A suction port 4 for sucking indoor air into the interior is formed on the upper surface of the housing 2, and a blower for blowing out the air heat-exchanged by a heat exchanger 30 described later on the lower surface of the housing 2. An outlet 5 is formed.

  In the main body 100 a, a fan 10 for sucking room air from the suction port 4, a fan motor 20 that drives the fan 10, an electrical component box (not shown), and an air path 6 from the fan 10 to the outlet 5. And a heat exchanger 30 for exchanging heat between the refrigerant and the room air.

  The fan 10 is disposed on the downstream side of the suction port 4 and on the upstream side of the heat exchanger 30, and is configured by, for example, an axial flow fan or a mixed flow fan that is a propeller fan.

  The heat exchanger 30 includes a plurality of fins 31 arranged at intervals, and a plurality of heat transfer tubes 32 that pass through the plurality of fins 31 and through which the refrigerant passes. In the first embodiment, the heat exchanger 30 has a configuration in which a plurality of divided heat exchangers 30a to 30d are combined in a W shape when viewed from the right or left side of the main body 100a.

  The fan 10, the fan motor 20, the electrical component box (not shown) and the heat exchanger 30 are mounted on the back case 1.

  The main body 100 a further includes a drain pan 40 that receives and drains drain water generated by condensation on the surface of the heat exchanger 30.

FIG. 3 is a perspective view of the drain pan 40 of FIG. FIG. 4 is an exploded perspective view of the drain pan 40 of FIG.
In addition to the function of receiving and draining drain water, the drain pan 40 also functions as a wind path wall for the air flow after passing through the heat exchanger 30. The drain pan 40 is configured by vertically stacking a heat exchanger side drain pan 41 disposed below the heat exchanger 30 and receiving drain water, and an air passage side drain pan 42 disposed below the heat exchanger side drain pan 41. ing.

  The heat exchanger side drain pan 41 has two water receiving portions 41a and 41b and a connecting portion 41c that connects the two water receiving portions 41a and 41b, and these are integrally formed. Have a configuration. The water receiving portion 41a is located below the divided heat exchanger 30a disposed in the forefront among the divided heat exchangers 30a to 30d and the divided heat exchanger 30b disposed behind the divided heat exchanger 30a, thereby dividing heat. The drain water generated in the exchanger 30a and the divided heat exchanger 30b is received. The water receiver 41b is located below the divided heat exchanger 30c disposed behind the divided heat exchanger 30b and the divided heat exchanger 30d disposed behind the divided heat exchanger 30c, and divided heat exchange is performed. The drain water generated in the vessel 30c and the divided heat exchanger 30d is received.

  As shown in FIG. 2, the rear water receiving portion 41 b has an air passage wall 41 d that extends downward from the front end portion 41 ba and then inclines toward the front. The air passage wall 41d mainly has an effect of guiding the air flow that has passed through the divided heat exchanger 30c to the air outlet 5.

  As shown in FIG. 4, the airway side drain pan 42 has two airway portions 42a and airway portions 42b, and a connecting portion 42c that connects the two airway portions 42a and the airway portions 42b. Has a structure formed integrally. The air passage portion 42a is located below the water receiving portion 41a, and the air passage portion 42b is located below the water receiving portion 41b. And the space which is a heat insulation layer is formed between the water receiving parts 41a and 41b and the air path parts 42a and 42b, and the heat insulating material 43 (refer FIG. 2) is arrange | positioned in this space. The heat insulating material 43 is not essential and can be omitted.

  The drain pan 40 is fixed to the back case 1 in such a manner that the heat exchanger side drain pan 41 and the air channel side drain pan 42 configured as described above are vertically stacked and locked together. The structure of the locking portion will be described with reference to FIG.

FIG. 5 is a view showing a perspective view of the drain pan 40 cut along the AA cross section of FIG. 3 and a partially enlarged view of the perspective view.
On the lower end side of the air passage wall 41 d of the heat exchanger side drain pan 41, a plurality of locking holes 44 are provided at intervals in the longitudinal direction of the indoor unit 100. The air channel side drain pan 42 is provided with a locking claw 45 that locks in the locking hole 44, and the heat hole side drain pan 41 and the air path side drain pan 42 are connected by the locking hole 44 and the locking claw 45. Are locked together.

  Here, when carrying the drain pan 40 when assembling the indoor unit 100, if the locking claw 45 is unintentionally pushed into the back side, the locking claw 45 and the locking hole 44 are unlocked, and the airway side drain pan 42. May fall off from the heat exchanger side drain pan 41. In order to prevent such inconvenience, the amount of pushing in the direction opposite to the locking direction of the locking claw 45 is regulated in the heat exchanger side drain pan 41 so that the locking claw 45 comes off the locking hole 44. A rib 46 is provided to prevent this.

  In the indoor unit 100 configured as described above, when the fan 10 is rotated by the rotation of the fan motor 20, the indoor air is sucked from the suction port 4 on the upper surface of the main body 100a, and the heat exchanger 30 exchanges heat with the refrigerant and sucks it. The air is cool or warm. Then, the cold air or warm air passes through the air passage 6 (see FIG. 1) and is blown out into the room from the air outlet 5 provided with the vertical air direction adjusting plate 7. At this time, the vertical air direction adjusting plate 7 is rotated to adjust the vertical air direction of the heat-exchanged air sent by the fan 10.

Next, the air path of the indoor unit 100 will be described.
FIG. 6 is an explanatory diagram of the air path of the indoor unit 100 of the air conditioner according to Embodiment 1 of the present invention.
The heat exchanger 30 of the first embodiment has a W shape as described above, and the airflow path after passing through the heat exchanger 30 is as shown by the arrows in FIG. There are three paths 6a, 6b and 6c. The air path 6a is an air path through which the air flow after passing through the divided heat exchanger 30a flows in the downward direction. The air passage 6b is an air passage through which the air flow that has passed through the divided heat exchangers 30b and 30c flows downward, and a part of the heat exchanger side drain pan 41 (the air passage wall 41d) is used as the air passage wall. Yes. The air passage 6c is an air passage through which the air flow after passing through the divided heat exchanger 30d flows from the back side of the main body 100a toward the front lower side, and the air passage side drain pan 42 is used as the air passage wall. The air passage 6b constitutes a first air passage according to the present invention, and the air passage 6c constitutes a second air passage according to the present invention.

  Here, for comparison, an air path in a conventional air conditioner including an inverted V-shaped, N-shaped, and M-shaped heat exchanger will be described with reference to FIGS.

FIG. 7 is a schematic cross-sectional view of a conventional air conditioner indoor unit equipped with an inverted V-shaped heat exchanger 200.
In the case of this air conditioner, the air path of the air flow after passing through the inverted V-shaped heat exchanger 200 is one of the air paths 201.

FIG. 8 is a schematic cross-sectional view of a conventional air conditioner indoor unit including an N-shaped heat exchanger 210. FIG. 9 is a schematic cross-sectional view of a conventional air conditioner indoor unit provided with an M-shaped heat exchanger 220.
In the case of the air conditioner of FIG.7 and FIG.8, the airflow path of the airflow after passing through the N-shaped heat exchanger 210 and the M-shaped heat exchanger 220 is two of the airflow path 211a and the airflow path 211b. One.

  In the case of the inverted V-shaped, N-shaped, and M-shaped heat exchangers shown in FIGS. 7 to 9, since there is a large opening outlet 50 immediately below each air passage, the temperature of each air flow Since air is blown out into the room (outside the indoor unit 100) before the influence of the difference appears, the possibility of dew condensation is low.

  In contrast, in the case of the W-shaped heat exchanger 30 of the first embodiment shown in FIG. 6, three air paths are formed as described above. And the air of the air path 6a is blown out indoors from the blower outlet 5 directly under. Further, most of the air in the air passage 6b is also blown out from the outlet 5 directly below. And the air of the air path 6c flows circularly from the back side, is guide | induced to the front downward direction, and is blown off from the blower outlet 5 indoors (outside the indoor unit 100). Such a flow in the air passage 6c is provided in the lower part of the back of the housing for a piping space for storing piping for connecting the indoor unit 100 and the outdoor unit, pipes for drain water drainage, and the like. This is because there is a restriction in arrangement in which the blowout port 5 cannot be arranged immediately below the split heat exchanger 30d.

  In this way, the air flow in the third air passage 6c flows from the back side toward the front lower side, and the air flow in the second air passage 6b flows in the direct downward direction. Contact is made before reaching the outlet 5. For this reason, when there is a temperature difference between the two airflows, dew condensation occurs near the airflow contact 11 unless any countermeasure is taken.

  By the way, the temperature of each airflow after passing through each of the plurality of divided heat exchangers 30a to 30d functioning as an evaporator during the cooling operation is affected by the amount of heat exchange in each divided heat exchanger 30a to 30d. It will be a thing. The amount of heat exchange in each of the divided heat exchangers 30a to 30d is related to the state of the refrigerant in each divided heat exchanger and the difference in how the paths (piping patterns) are assembled. Therefore, the temperature of the air flow passing through the air path 6b after exchanging heat with the refrigerant in the divided heat exchanger 30b and the divided heat exchanger 30c, and passing through the air path 6c after exchanging heat with the refrigerant in the divided heat exchanger 30d. The relationship between the temperature of the air flow and the temperature varies depending on how the paths are assembled. In other words, the temperature of the air flow passing through the air passage 6b and the temperature of the air flow passing through the air passage 6c may be the same temperature, may be different, or may be different. The temperature of the air flow passing through the air path may be higher than the temperature of the air flow passing through the air passage 6c, or vice versa.

  For this reason, a temperature difference occurs between the two airflows passing through the airway 6b and the airway 6c. Therefore, in the first embodiment, it is possible to prevent condensation by adopting the following structure. .

  Here, first, a dew condensation prevention structure when the temperature of the airflow passing through the air passage 6b is higher than the temperature of the airflow passing through the air passage 6c will be described with reference to FIG.

  In FIG. 10 and FIGS. 11 and 12 to be described later, the expressions “cold air” and “warm air” do not mean air for cooling or heating, and are low in a temperature difference of about 0 to 2 ° C., for example. The direction is “cold air” and the higher one is “warm air”.

  FIG. 10 is a diagram showing an enlarged perspective view around the drain pan including a portion where the air passage 6b and the air passage 6c in FIG. 6 intersect with each other, and an enlarged schematic view of a part of the perspective view. FIG. 6 is an explanatory diagram of a dew condensation suppressing structure when cold air passes through the air passage 6b and hot air passes through the air passage 6c. Moreover, FIG. 11 is a figure which shows a comparative example, and is the figure which showed the structural example in which dew condensation occurs. In addition, the heat exchanger 30 of FIG. 10 differs in the number of piping compared with the heat exchanger 30 shown in FIG. 6, and is further equipped with the auxiliary | assistant heat exchanger other than the division | segmentation heat exchangers 30a-30d. Although illustrated, the heat exchanger of the present invention includes both configurations.

  The air passage wall 41d of the heat exchanger side drain pan 41 is cooled by being exposed to the cold air passing through the air passage 6b, while the hot air passing through the air passage 6c passes below the air passage wall 41d. ing. For this reason, as shown in FIG. 11, if the air passage wall 41d that is cooled by being exposed to the cold air is exposed to the air passage 6c through which the hot air passes, the influence of the temperature difference between the cold air and the hot air is affected. As a result, condensation occurs on the exposed portion of the air passage wall 41d to the air passage 6c, specifically, the lower end surface 41e of the air passage wall 41d.

  However, in the structure shown in FIG. 10, the air channel side drain pan 42 is disposed below the air channel wall 41d, and the air channel wall 41d that has been cooled by being exposed to the cold air is covered with the air channel side drain pan 42 from below. The lower end surface 41e of the road wall 41d is configured not to be exposed to the air passage 6c. For this reason, dew condensation on the air passage wall 41d can be prevented. Further, since the heat insulating material 43 is disposed between the air passage wall 41d and the air passage side drain pan 42 located below the air passage wall 41d, the air passage side drain pan 42 is cooled by the cold air passing through the air passage 6b. There is nothing to do. For this reason, the air path side drain pan 42 is not condensed due to a temperature difference from the warm air passing through the air path 6c.

FIG. 12 is an enlarged schematic view of the periphery of the drain pan including the portion where the air passage 6b and the air passage 6c in FIG. 6 intersect. Hot air passes through the air passage 6b and cold air passes through the air passage 6c. It is explanatory drawing of the dew condensation suppression structure in the case of doing.
In the structure shown in FIG. 12, the air channel side drain pan 42 that is cooled by being exposed to the cold air of the air channel 6c is exposed to the air channel 6b beyond the heat exchanger side drain pan 41 that is heated by being exposed to the hot air. Not. Specifically, a configuration in which the end surface of the air passage side drain pan 42 on the air passage 6b side through which the air flow having a lower temperature flows is covered from the air passage 6b side by the heat exchanger side drain pan 41 through which the air flow having a higher temperature flows. It is said. For this reason, the dew condensation by the temperature difference of the airflow of the air path 6b and the airflow of the air path 6c does not arise.

  As described above, the relationship between the temperature of the air flow passing through the air passage 6b and the temperature of the air flow passing through the air passage 6c depends on how the paths in the divided heat exchangers 30b and 30c and the divided heat exchanger 30d are assembled. It will change. For this reason, after evaluating the performance of the heat exchanger 30 and confirming the temperature relationship of the air flow, it may be determined which of the structure of FIG. 10 and the structure of FIG.

  Further, depending on the model, for example, it is necessary to use the structure of FIG. 10 and the structure of FIG. For this reason, it is also possible to prepare both types of FIG. 10 and FIG. 12 for each performance of the heat exchanger 30.

  As described above, in the first embodiment, the drain pan 40 is disposed below the heat exchanger 30 and receives the drain water, and is disposed below the heat exchanger side drain pan 41. The air channel side drain pan 42 is used. And it has the air path 6b which uses the heat exchanger side drain pan 41 as an air path wall, and the air path 6c which uses the air path side drain pan 42 as an air path wall, and temperature is air_conditioning | cooling operation among air paths 6b and 6c. The air passage wall constituting the air passage side through which the lower air flow flows was configured not to be exposed to the air passage through which the air flow having a higher temperature flows. For this reason, in the indoor unit 100 of the air conditioner having a plurality of air paths after passing through the heat exchanger 30, condensation in the air paths can be prevented. Moreover, since there is no possibility of dew condensation, an indoor unit of an air conditioner having a high heat exchange rate that can make full use of the capability of the mounted heat exchanger 30 can be obtained.

  Here, the configuration in which the air passage wall constituting the air passage side through which the air flow having the lower temperature flows during cooling operation is not exposed to the air passage through which the air flow having the higher temperature flows is specifically as follows. do it. That is, the wind of the air channel side drain pan 42 facing the lower end surface 41e (see FIG. 10) of the air channel wall 41d of the heat exchanger side drain pan 41 facing the lower temperature air flow faces the air channel side drain pan 42 facing the higher temperature air flow. What is necessary is just to make it cover from a lower side with a road wall. Further, the end surface 41f (see FIG. 12) of the air passage 6b on the air passage wall of the air passage side drain pan 42 facing the air flow having the lower temperature faces the heat exchanger side drain pan 41 facing the air flow having the higher temperature. What is necessary is just to comprise so that it may cover from the air path 6b side by 41 d of air path walls. By configuring as described above, it is possible to prevent condensation in the configuration in which the heat exchanger 30 has a W shape.

  Further, the heat exchanger side drain pan 41 and the air path side drain pan 42 constituting the drain pan 40 are a plurality of locking holes 44 provided in the heat exchanger side drain pan 41, and locking claws 45 provided in the air path side drain pan 42. Are locked to each other. The heat exchanger side drain pan 41 is provided with a rib 46 that restricts the pushing amount of the locking claw 45 in the direction opposite to the locking direction and prevents the locking claw 45 from coming off the locking hole 44. Therefore, when carrying the drain pan 40, it is possible to prevent the inconvenience that the locking claw 45 and the locking hole 44 are unlocked and the air channel side drain pan 42 is dropped from the heat exchanger side drain pan 41.

  In the first embodiment, the heat exchanger 30 is W-shaped and has three air paths. However, the shape of the heat exchanger 30 and the number of air paths are not limited to this. In short, the present invention can be applied as a dew condensation prevention structure at a location where two air flows having different temperature differences contact each other.

  DESCRIPTION OF SYMBOLS 1 Back case, 2 housing | casing, 3 front design panel, 4 suction inlet, 5 blower outlet, 6 air path, 6a air path, 6b air path, 6c air path, 7 up-and-down air direction adjusting plate, 10 fan, 11 airflow contact, 20 fan motor, 30 heat exchanger, 30a split heat exchanger, 30b split heat exchanger, 30c split heat exchanger, 30d split heat exchanger, 31 fin, 32 heat transfer tube, 40 drain pan, 41 heat exchanger side drain pan, 41a water receiving portion, 41b water receiving portion, 41ba front side end portion, 41c connecting portion, 41d air passage wall, 41e lower end surface, 41f end surface, 42 air passage side drain pan, 42a air passage portion, 42b air passage portion, 42c connecting portion, 43 heat insulating material, 44 locking hole, 45 locking claw, 46 rib, 50 outlet, 100 indoor unit, 100a body, 200 heat exchanger, 201 air path, 210 Exchanger, 211a air passages, 211b air passage, 220 heat exchanger.

Claims (5)

A main body having a suction port at the top and a blow-off port at the bottom;
A fan installed in the main body;
A heat exchanger installed in the main body;
A drain pan for receiving drain water generated in the heat exchanger,
The drain pan is configured by stacking a heat exchanger side drain pan disposed below the heat exchanger and an air passage side drain pan disposed below the heat exchanger side drain pan.
The main body has a first air passage having the heat exchanger side drain pan as an air passage wall and a second air passage having the air passage side drain pan as an air passage wall, and the fan sucked from the suction port The air flow from is divided into a plurality of air flows after passing through the heat exchanger, and the divided air flows are passed through the first air passage and the second air passage, and then merged and blown out from the outlet. Composed of
Of the first air passage and the second air passage, the air passage wall constituting the air passage side through which the air flow having a lower temperature flows during cooling operation is an air passage through which the air flow having a higher temperature flows. the indoor unit of the exposed have such air conditioner. The lower end face of the air passage wall of the heat exchanger-side drain pan temperature faces the lower air flow is we covered from below by the air passage wall of the air path side drain pan facing the air flow the higher the temperature, An indoor unit of an air conditioner according to claim 1, wherein there. The end surface of the first wind roadside air passage wall of the air path side drain pan temperature faces the lower air flow, the wind path wall of the heat exchanger side drain pan facing the air flow the higher the temperature, An indoor unit of an air conditioner according to claim 1 wherein the cracking covered from the first wind roadside. The heat exchanger has a configuration in which four divided heat exchangers are combined in a W shape when viewed from the right or left side of the main body,
The first air passage is an air passage through which the air flow that has passed through the two divided heat exchangers in the middle of the four divided heat exchangers flows downward.
4. The air passage according to claim 1, wherein the second air passage is an air passage through which an air flow after passing through the split heat exchanger on the backmost side flows from the back side of the main body toward the front lower side. 5. The indoor unit of the air conditioner described in 1. The airway side drain pan has a plurality of locking claws,
The heat exchanger side drain pan is formed at intervals in the longitudinal direction of the main body, and a plurality of locking holes for locking the plurality of locking claws, and the engagement locked by the locking holes. A rib that restricts movement of the locking claw and prevents the locking claw from coming off the locking hole when the locking claw is pushed in a direction opposite to the locking direction of the locking claw. The indoor unit of the air conditioner as described in any one of Claims 1-4.

Images