JP6385566B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner that suppresses dew condensation on an electrical component box.

  2. Description of the Related Art Conventionally, an indoor unit of an air conditioner that is designed to suppress dew condensation on an electrical component box has been proposed (see, for example, Patent Document 1). The indoor unit of an air conditioner described in Patent Literature 1 includes a housing in which a suction port is formed in the upper part and a blower outlet is formed in the lower side of the front part. And inside the housing | casing, the heat exchanger arrange | positioned so that the upstream of the crossflow fan and this crossflow fan may be accommodated. Moreover, the indoor unit of the air conditioner described in Patent Document 1 is provided with an electrical component box (an electrical box) that houses a control board or the like on one side of the heat exchanger. And in the indoor unit of the air conditioner described in Patent Document 1, a partition member is provided between the heat exchanger and the electrical component box in order to suppress dew condensation on the electrical component box. This partition member simply suppresses dew generated in the heat exchanger from scattering and adhering to the electrical component box. For this reason, a gap is formed around the partition member.

JP 2011-587779 A

  In recent years, a fan that uses an axial fan (for example, a propeller fan) instead of a cross flow fan has been proposed as a fan used in an indoor unit of an air conditioner. As described above, the indoor unit of an air conditioner using an axial fan is provided with an axial fan on the downstream side of the suction port and a heat exchanger on the downstream side of the axial fan in the housing. . Thus, in the indoor unit of an air conditioner using an axial fan, the partition member disclosed in Patent Document 1 has a problem that it is not possible to suppress dew on the electrical component box.

  Specifically, in an indoor unit of an air conditioner using a crossflow fan, when the crossflow fan is driven, indoor air is sucked from a suction port formed in the upper part of the housing. The air that has flowed into the housing through the suction port flows into the heat exchanger, exchanges heat with the refrigerant that flows through the heat exchanger, and is then exhausted from the outlet to the room by the crossflow fan. In other words, the air conditioner indoor unit using a cross flow fan is provided with a cross flow fan on the downstream side of the heat exchanger, so the air passing through the heat exchanger is the air sucked by the cross flow fan. It becomes. For this reason, when the indoor unit is operated, air flows from the electrical component box side toward the heat exchanger side in the gap around the partition member provided between the heat exchanger and the electrical component box, The air will flow out of the outlet after passing through the heat exchanger.

  On the other hand, an indoor unit of an air conditioner equipped with an axial fan on the upstream side of the heat exchanger sucks indoor air from a suction port formed in the upper part of the housing when the axial fan is driven. This air flowing in from the suction port flows into the axial fan. This air is blown out from the axial fan, sent to the heat exchanger side, and flows into the heat exchanger. And the air which flowed into the heat exchanger exchanges heat with the refrigerant | coolant which flows through the inside of a heat exchanger, Then, it is discharged | emitted indoors from a blower outlet. That is, an indoor unit of an air conditioner having an axial fan on the upstream side of the heat exchanger has a configuration in which air is pushed into the heat exchanger by the axial fan (a configuration in which air is not sucked from the downstream side of the heat exchanger). It has become.

  For this reason, when the partition member shown by patent document 1 is provided in the indoor unit of the air conditioner provided with the axial fan on the upstream side of the heat exchanger, it is provided between the heat exchanger and the electrical component box. In the gap around the partition member thus formed, air flows from the heat exchanger side toward the electrical component box side. Therefore, when the indoor unit is in cooling operation, cold air after heat exchange leaks from the gap around the partition member to the electrical component box side, cools the electrical component box, and condensation occurs on the electrical component box. End up. For this reason, even if the partition member shown by patent document 1 is provided in the indoor unit of the air conditioner provided with the axial fan on the upstream side of the heat exchanger, the electrical component box is caused by condensation on the electrical component box. As a result, dew is generated and a defect occurs in the control board.

  The present invention has been made to solve the above-described problems, and in an indoor unit of an air conditioner equipped with an axial fan on the upstream side of a heat exchanger, the dew condensation on the electrical component box is suppressed. The purpose is to obtain an air conditioner indoor unit.

  The indoor unit of the air conditioner according to the present invention has a suction port formed in the upper surface part, a blower outlet formed below the suction port, a housing having a back plate on the back side, and the housing in the housing Heat that exchanges heat between the axial flow fan provided on the downstream side of the suction port and the refrigerant that is provided on the downstream side of the axial flow fan in the housing and is sucked into the housing by the axial flow fan. And an electrical component box provided on one side of the heat exchanger and containing a control board, and attached to the back plate, and disposed between the heat exchanger and the electrical component box. And a partition between the upper edge portion, the front edge portion and the lower edge portion of the partition plate and the housing.

  In the present invention, a partition plate is provided that is attached to the back plate and disposed between the heat exchanger and the electrical component box, and includes an upper edge portion, a front edge portion, and a lower edge portion of the partition plate and the housing. Is sealed. For this reason, the indoor unit of the air conditioner according to the present invention is such that the cold air after heat exchange leaks from the gap around the partition plate to the electrical component box side, which causes condensation in the electrical component box. It is possible to suppress dew on the electrical component box.

It is the assembly perspective view which looked at the indoor unit of the air conditioner concerning an embodiment of the invention from the right front upper side. It is the disassembled perspective view which looked at the indoor unit of the air conditioner which concerns on embodiment of this invention from the right front upper side. It is the assembly perspective view which looked at the state where the design panel was removed in the indoor unit of the air harmony machine concerning an embodiment of the invention from the right front upper side. It is the assembly perspective view which looked at the state which removed the design panel and the electrical component box from the right front upper side in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the assembly perspective view which looked at the partition plate vicinity in the indoor unit of the air conditioner concerning an embodiment of the invention from the right front upper side. It is the perspective view which showed the partition plate of the indoor unit of the air conditioner which concerns on embodiment of this invention in the same observation direction as FIG. It is the assembly perspective view which looked at the partition plate vicinity in the indoor unit of the air conditioner concerning an embodiment of the invention from the lower right front side. It is the perspective view which showed the partition plate of the indoor unit of the air conditioner which concerns on embodiment of this invention in the same observation direction as FIG. It is the assembly perspective view which looked at the partition plate and connection piping vicinity in the indoor unit of the air conditioner concerning an embodiment of the invention from the lower right front side, and cut and showed the right end of a back board. . It is an assembly perspective view which shows the state which removed the partition plate from FIG. It is the perspective view which looked at the partition plate of the indoor unit of the air conditioner which concerns on embodiment of this invention from the left back lower side. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG.

  FIG. 1 is an assembled perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention as viewed from the upper right front side. FIG. 2 is an exploded perspective view of the indoor unit of the air conditioner as viewed from the upper right front side. FIG. 3 is an assembly perspective view of the indoor unit of the air conditioner as seen from the upper right front side with the design panel removed. FIG. 4 is an assembled perspective view of the indoor unit of the air conditioner as seen from the upper right front side with the design panel and the electrical component box removed.

  The indoor unit 100 according to the present embodiment includes a housing 1 in which a suction port 4 is formed on an upper surface portion, a blower port 5 is formed below the suction port 4. In the present embodiment, the air outlet 5 is formed on the lower surface of the housing 1. And in the air path in the housing | casing 1 from the inlet 4 to the blower outlet 5, for example, the axial fan 31 which is a propeller fan, and the air (room air) sucked in the housing 1 by the axial fan 31 And a heat exchanger 40 for exchanging heat with the refrigerant.

  The housing 1 has a substantially rectangular parallelepiped box shape, and includes a back plate 2 and a design panel 3. The back plate 2 constitutes the back portion of the housing 1. The design panel 3 constitutes a front surface portion (front surface portion), left and right side surface portions, an upper surface portion, and a lower surface portion of the housing 1. That is, the suction inlet 4 and the blower outlet 5 are formed in the design panel 3. In addition, the air outlet 5 has an up / down air direction plate (not shown) for adjusting the vertical direction of the air blown from the air outlet 5, and the horizontal direction of the air blown from the air outlet 5. Left and right wind direction plates (not shown) for adjusting the angle are provided. In the present embodiment, the back plate 2 and the design panel 3 constitute the external shape of the housing 1, but this is merely an example.

  The axial fan 31 is provided on the downstream side of the suction port 4 in the housing 1. In the present embodiment, two axial fans 31 are arranged side by side along the left-right direction of the housing 1. Moreover, in the indoor unit 100 concerning this Embodiment, it is set as the structure which attaches these axial fans 31 to the backplate 2 as a unit (at once). For this reason, the housing | casing 1 is equipped with the fan outer frame 10 in which the bell mouth 11 by which the axial fan 31 is arrange | positioned is formed in the inner peripheral side. As described above, in the present embodiment, the two axial fans 31 are arranged side by side along the left-right direction of the housing 1. For this reason, two bell mouths 11 are also arranged in the fan outer frame 10 along the left-right direction of the housing 1. The number of axial fans 31 is merely an example, and the number of axial fans 31 may be determined as appropriate based on the air volume required by the indoor unit 100.

  The heat exchanger 40 is provided on the downstream side of the axial fan 31 in the housing 1. The heat exchanger 40 includes a heat exchanger body 41 that exchanges heat between the air (indoor air) sucked into the housing 1 and the refrigerant, and a pair of left and right ends of the heat exchanger body 41. Side plates (right side plate 47, left side plate 48) are provided. The heat exchanger body 41 has a first heat exchange element 42, a second heat exchange element 43, a third heat exchange element 44 and a fourth heat exchange element 45 from the front side to the back side of the housing 1. These are arranged in a W shape when viewed from the side. Each of the first heat exchange element 42, the second heat exchange element 43, the third heat exchange element 44, and the fourth heat exchange element 45 includes, for example, a plurality of heat transfer fins arranged in parallel at a predetermined interval, It is a plate fin type heat exchanger composed of a plurality of heat transfer tubes (refrigerant channels) penetrating these heat transfer fins in the direction in which the heat transfer fins are arranged. The heat exchanger 40 is attached to the back plate 2 of the housing 1 via the right side plate 47 and the left side plate 48. The configuration of the heat exchanger 40 is not limited to this configuration. Depending on the heat exchange capacity required for the indoor unit 100, the size of each heat exchange element may be different, or the number of heat exchange elements (that is, the shape in side view) may be different.

  When the indoor unit 100 performs a cooling operation, condensation may occur in the heat exchanger body 41 when the air sucked into the housing 1 is cooled by the heat exchanger body 41 of the heat exchanger 40. For this reason, the housing 1 according to the present embodiment includes a drain pan 20 below the heat exchanger 40. The drain pan 20 includes a dew receiving unit 21, a dew receiving unit 22, a communication path 23, and the like. The dew receiving unit 21 is disposed below the connection portion between the lower end of the first heat exchange element 42 and the lower end of the second heat exchange element 43, and drops from the first heat exchange element 42 and the second heat exchange element 43. It receives and collects dew. The dew receiving unit 22 is disposed below the connection portion between the lower end of the third heat exchange element 44 and the lower end of the fourth heat exchange element 45, and drops from the third heat exchange element 44 and the fourth heat exchange element 45. It receives and collects dew. The communication path 23 connects both ends of the dew receiving unit 21 and the dew receiving unit 22. The dew collected by the dew receiving part 21 and the dew receiving part 22 is configured to be discharged to the outside of the housing 1 through a drain pipe (not shown) connected to the communication path 23. Further, the drain pan 20 is formed with an opening 24 surrounded by a dew receiving part 21, a dew receiving part 22 and a communication path 23. This opening part 24 comprises the air path from the heat exchanger 40 to the blower outlet 5. FIG. In addition, the shape of the drain pan 20 is determined according to the heat exchanger main body 41, and is not limited to said structure.

  The housing 1 according to the present embodiment includes a front cover 6 in front of the heat exchanger 40. The front cover 6 closes an opening formed by a front portion of the fan outer frame 10, a front portion of the side plates (the right side plate 47 and the left side plate 48) of the heat exchanger 40, and a front portion of the drain pan 20, and the section. Constitutes the front wall of the air passage. The front cover 6 may not be provided, and the front surface portion 3a of the design panel 3 may be used as the front wall of the air passage in the section.

  The indoor unit 100 according to the present embodiment is also provided with an electrical component box 60 in the housing 1. The electrical component box 60 accommodates a control board and the like for controlling the rotational speed of the axial fan 31 and the like. The electrical component box 60 is disposed on one side of the heat exchanger 40 (on the right side in the present embodiment).

  Here, in the indoor unit 100 according to the present embodiment provided with the axial fan 31 on the upstream side of the heat exchanger 40, the air blown from the axial fan 31 is sent to the heat exchanger 40, and the air After heat exchange with the refrigerant flowing in the refrigerant flow path of the heat exchanger 40, the refrigerant is discharged into the room through the outlet 5. That is, the indoor unit 100 has a configuration in which air is pushed into the heat exchanger 40 by the axial fan 31 (a configuration in which air is not sucked from the downstream side of the heat exchanger 40).

  For this reason, in the indoor unit 100, the air after passing through the heat exchanger flows from the heat exchanger 40 side toward the electrical component box 60 side. Therefore, when the indoor unit 100 performs a cooling operation, there is a concern that cold air after heat exchange leaks to the electrical component box 60 side, cools the electrical component box 60, and condensation occurs in the electrical component box 60. The That is, there is a concern that dew condensation on the electrical component box 60 may cause dew on the electrical component box 60 and cause a defect in the control board.

For this reason, the indoor unit 100 which concerns on this Embodiment has arrange | positioned the partition plate 70 between the heat exchanger 40 and the electrical component box 60, and prevents the dew condensation to the electrical component box 60. FIG.
Hereinafter, the detailed configuration of the partition plate 70 will be described with reference to the drawings.

  FIG. 5 is an assembled perspective view of the vicinity of the partition plate in the indoor unit of the air conditioner according to the embodiment of the present invention as seen from the upper right front side. FIG. 6 is a perspective view showing the partition plate of the indoor unit of this air conditioner in the same observation direction as FIG. FIG. 7 is an assembled perspective view of the vicinity of the partition plate in the indoor unit of the air conditioner as viewed from the lower right front side. FIG. 8 is a perspective view showing the partition plate of the indoor unit of this air conditioner in the same observation direction as FIG.

  The partition plate 70 has a substantially rectangular parallelepiped shape, for example. And the sealing material 78 is attached to the whole region of the upper edge part 73 of the partition plate 70, the front edge part 74, and the lower edge part 75 by sticking etc., for example. Moreover, the partition plate 70 is provided with the attaching part 71 projected in the outer side (right side) in the rear-end part. The partition plate 70 is attached to the back plate 2 by inserting the screw 80 into the through hole 72 formed in the attachment portion 71 and screwing the screw 80 into the screw hole formed in the back plate 2. In addition, the attachment structure to the backplate 2 of the partition plate 70 is not limited to this structure. For example, one of a claw or an engaging portion (for example, a recess) with which the claw is engaged is formed on the back plate 2, and the other of the claw or the engaging portion is formed on the mounting portion 71 of the partition plate 70, The partition plate 70 may be attached to the back plate 2 by engaging the claw with the engaging portion.

  Further, the upper edge portion 73 of the partition plate 70 according to the present embodiment is opposed to the right end portion 10 a of the fan outer frame 10. A sealing material 78 provided on the upper edge portion 73 of the partition plate 70 is sandwiched between the upper edge portion 73 of the partition plate 70 and the right end portion 10a of the fan outer frame 10. Further, the front edge portion 74 of the partition plate 70 according to the present embodiment is opposed to the right end portion 6 a of the front cover 6. A sealing material 78 provided on the front edge portion 74 of the partition plate 70 is sandwiched between the front edge portion 74 of the partition plate 70 and the right end portion 6a of the front cover 6. Further, the lower edge 75 of the partition plate 70 according to the present embodiment is opposed to the right end 20 a of the drain pan 20. A sealing material 78 provided on the lower edge 75 of the partition plate 70 is sandwiched between the lower edge 75 of the partition plate 70 and the right end 20a of the drain pan 20. Thereby, the upper edge part 73, the front edge part 74, and the lower edge part 75 of the partition plate 70 will be sealed. In other words, the partition plate 70 closes the space between the heat exchanger 40 and the outlet 5 and the electrical component box 60.

  Here, in order to make the heat exchanger 40 of the indoor unit 100 one of the configurations of the refrigeration cycle circuit, as shown in FIG. 2, the refrigerant flow path of the heat exchanger 40 and external devices (configure the refrigeration cycle circuit). It is necessary to connect a compressor, an expansion device, and the like) with a connection pipe 50. For this reason, there is a concern that the conditioned air after heat exchange leaks from other than the air outlet 5 through the periphery of the connection pipe 50 and the performance of the indoor unit 100 deteriorates. In this Embodiment, the deterioration of the performance of the indoor unit 100 is also prevented by configuring the partition plate 70 as follows.

  FIG. 9 is an assembled perspective view of the vicinity of the partition plate and the connection pipe in the indoor unit of the air conditioner according to the embodiment of the present invention as seen from the lower right front side, and shows the right end of the back plate cut away. It is a thing. 10 is an assembled perspective view showing a state in which the partition plate is removed from FIG. FIG. 11 is a perspective view of the partition plate of the indoor unit of the air conditioner as viewed from the lower left rear side. 12 is a cross-sectional view taken along the line AA in FIG. FIG. 13 is a sectional view taken along line BB in FIG.

  In the back plate 2, a pipe groove 13 that accommodates the connection pipe 50 is formed at a position facing the mounting portion 71 of the partition plate 70. Further, a pipe cover 51 is provided on the outer peripheral side of the connection pipe 50 at least in a portion accommodated in the pipe groove 13. For this reason, by attaching the partition plate 70 to the back plate 2, the connection pipe 50 accommodated in the pipe groove 13 is pressed by the mounting portion 71 of the partition plate 70. That is, the attachment portion 71 of the partition plate 70 also functions as the pipe pressing portion 76. In other words, the partition plate 70 also has a pipe pressing portion 76. Since the partition plate 70 is formed by integrally forming a part that partitions the heat exchanger 40 and the electrical component box 60 and a part that holds the connection pipe 50, the number of parts and the part mounting man-hours of the indoor unit 100. The indoor unit 100 can be provided at a low cost.

  Further, the attachment portion 71 (that is, the pipe holding portion 76) of the partition plate 70 includes at least one rib 77 at a position facing the connection pipe 50. For this reason, the pipe cover 51 is pressed by the rib 77 by attaching the partition plate 70 to the back plate 2. Thereby, since the space enclosed by the piping groove 13 and the attaching part 71 of the partition plate 70 can be obstruct | occluded with the piping cover 51, the air-conditioning air after heat exchange leaks from other than the blower outlet 5, and the performance of the indoor unit 100 is improved. It can prevent getting worse. In the present embodiment, a plurality of ribs 77 are provided. For this reason, it can prevent more that the air-conditioning air after heat exchange leaks from other than the blower outlet 5, ie, the performance of the indoor unit 100 deteriorates.

(Description of operation)
Next, the operation of the indoor unit 100 configured as described above will be described.
When the axial fan 31 is driven, indoor air is sucked into the housing 1 from the suction port 4 formed in the upper portion of the housing 1 (more specifically, the design panel 3). The air that has flowed into the housing 1 from the suction port 4 flows into the axial fan 31. This air is blown out to the heat exchanger 40 side by the axial fan 31. The air flows into the heat exchanger 40, exchanges heat with the refrigerant flowing through the refrigerant flow path of the heat exchanger 40, and is then discharged into the room as conditioned air from the blowout port 5.

  At this time, the indoor unit 100 is configured to push air into the heat exchanger 40 by the axial fan 31. That is, air is not sucked from the downstream side of the heat exchanger 40. For this reason, there is a concern that part of the conditioned air (the air after heat exchange by the heat exchanger 40) leaks out from the gap around the partition plate 70 toward the electrical component box 60. When part of the conditioned air leaks out toward the electrical component box 60 during the cooling operation, the electrical component box 60 is cooled and condensation occurs in the electrical component box 60. In other words, dew condensation on the electrical component box 60 may cause dew on the electrical component box 60, resulting in a problem with the control board. In addition, the design panel 3 and the like around the electrical component box 60 may be condensed by being cooled by the conditioned air, thereby deteriorating the design. In addition, the conditioned air leaks from other than the outlet 5, and the performance of the indoor unit 100 is deteriorated.

  However, in the indoor unit 100 according to the present embodiment, the partition plate 70 blocks the flow path from the heat exchanger 40 to the outlet 5 and the electrical component box 60 as described above. For this reason, the indoor unit 100 according to the present embodiment can prevent a part of the conditioned air from leaking out of the gap around the partition plate 70 toward the electrical component box 60 and causing condensation in the electrical component box 60. . That is, the indoor unit 100 according to the present embodiment can prevent dew from being generated on the electrical component box 60 due to dew condensation on the electrical component box 60 and causing a problem on the control board. Moreover, the indoor unit 100 which concerns on this Embodiment can also prevent that the design panel 3 etc. of the electrical component box 60 periphery cools with air-conditioning air, and is condensed, and a designability deteriorates. Moreover, the indoor unit 100 which concerns on this Embodiment can also prevent that air-conditioning air leaks from other than the blower outlet 5, and the performance of the indoor unit 100 deteriorates.

  Furthermore, since the indoor unit 100 according to the present embodiment can press the pipe cover 51 with the rib 77 and block the space surrounded by the pipe groove 13 and the mounting portion 71 of the partition plate 70 with the pipe cover 51, It is possible to further prevent the air from leaking from other than the outlet 5 and the performance of the indoor unit 100 is deteriorated.

  In the present embodiment, the upper edge 73, the front edge 74, and the lower edge 75 of the partition plate 70 are sealed between the fan outer frame 10, the front cover 6, and the drain pan 20. However, the configuration is not limited to the above as long as the partition plate 70 can block between the flow path from the heat exchanger 40 to the outlet 5 and the electrical component box 60. For example, the sealing material 78 may be sandwiched between the upper surface portion of the housing 1 (for example, the upper surface portion 3 b of the design panel 3) and the upper edge portion 73 of the partition plate 70. Further, for example, the sealing material 78 may be sandwiched between the front surface portion of the housing 1 (for example, the front surface portion 3 a of the design panel 3) and the front edge portion 74 of the partition plate 70. Further, for example, the sealing material 78 may be sandwiched between the lower surface portion of the housing 1 (for example, the lower surface portion 3 c of the design panel 3) and the lower edge portion 75 of the partition plate 70. That is, the above effects can be obtained as long as the space between the casing 1 and the upper edge 73, the front edge 74, and the lower edge 75 of the partition plate 70 is sealed.

  Further, the sealing structure between the casing 1 and the upper edge 73, the front edge 74, and the lower edge 75 of the partition plate 70 is not limited to the above structure. For example, a sealing material may be pasted from the electrical component box 60 side so as to close the space between the casing 1 and the upper edge 73, the front edge 74, and the lower edge 75 of the partition plate 70. Further, for example, a sealing material may be injected between the casing 1 and the upper edge portion 73, the front edge portion 74, and the lower edge portion 75 of the partition plate 70, and the space between them may be closed.

  DESCRIPTION OF SYMBOLS 1 Case, 2 Back plate, 3 Design panel, 3a Front part, 3b Upper surface part, 3c Lower surface part, 4 Suction inlet, 5 Air outlet, 6 Front cover, 6a Right end part, 10 Fan outer frame, 10a Right end part 11 Bell mouth, 13 Piping groove, 20 Drain pan, 20a Right end, 21 Dew receiving section, 22 Dew receiving section, 23 Connection path, 24 Opening section, 31 Axial fan, 40 Heat exchanger, 41 Heat exchanger body , 42 1st heat exchange element, 43 2nd heat exchange element, 44 3rd heat exchange element, 45 4th heat exchange element, 47 right side plate, 48 left side plate, 50 connection piping, 51 piping cover, 60 electrical component box, 70 partition plate, 71 mounting portion, 72 through hole, 73 upper edge portion, 74 front edge portion, 75 lower edge portion, 76 pipe holding portion, 77 rib, 78 seal material, 80 screw, 100 indoor unit.

Claims (7)

A suction port is formed on the upper surface, a blower port is formed below the suction port, and a housing having a back plate on the back side;
An axial fan provided on the downstream side of the suction port in the housing;
A heat exchanger that is provided on the downstream side of the axial fan in the casing and exchanges heat between the air sucked into the casing by the axial fan and the refrigerant;
An electrical component box provided on one side of the heat exchanger and containing a control board;
A partition plate attached to the back plate and disposed between the heat exchanger and the electrical component box;
With
An indoor unit of an air conditioner in which a space between an upper edge portion, a front edge portion and a lower edge portion of the partition plate and the housing is sealed. The indoor unit of an air conditioner according to claim 1, wherein the partition plate is configured to block between a flow path from the heat exchanger to the blowout port and the electrical component box. The indoor unit of the air conditioner according to claim 1 or 2 , wherein a sealing material is sandwiched between the upper edge portion, the front edge portion, the lower edge portion, and the casing of the partition plate. . A connection pipe for connecting the refrigerant flow path of the heat exchanger and an external device;
The back plate is formed with a piping groove that accommodates the connection piping.
The indoor unit of the air conditioner according to any one of claims 1 to 3, wherein the partition plate has a pipe pressing portion that holds the connection pipe accommodated in the pipe groove at a rear end thereof. The connection pipe includes a pipe cover at least in a portion accommodated in the pipe groove,
The indoor part of the air conditioner according to claim 4 , wherein the pipe holding portion of the partition plate includes at least one rib that presses the pipe cover at a position facing the connection pipe housed in the pipe groove. Machine. The housing includes a fan outer frame formed with a bell mouth on which an axial fan is disposed on an inner peripheral side,
The indoor unit of the air conditioner according to any one of claims 1 to 5 , wherein a space between the upper edge portion of the partition plate and the fan outer frame is sealed. The housing includes a drain pan that receives dew dropped from the heat exchanger,
The indoor unit of an air conditioner according to any one of claims 1 to 6, wherein a space between the lower edge portion of the partition plate and the drain pan is sealed.

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