JP2010065905A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner, preventing generation of water in an electric component box and intrusion of the water into the electric component box. <P>SOLUTION: This indoor unit 1 of the air conditioner is equipped with: a heat exchanger 12; a drain pan 11c disposed at a lower part of the heat exchanger 12; an electric component box 41 receiving electric components therein, and disposed ahead of the heat exchanger 12; and covers 43, 44 mounted on the electric component box 41 as members independent from the drain pan 11c, and covering at least a part of a face opposed to the heat exchanger 12, of the electric component box 41. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner in which a drain pan is provided below a heat exchanger, and an electrical component box containing electrical components is disposed in front of the heat exchanger.

Conventionally, as an indoor unit of an air conditioner in which a drain pan is provided below a heat exchanger and an electrical component box containing electrical components is disposed in front of the heat exchanger, the one described in Patent Document 1 is known. It has been.
In this indoor unit, an electrical component storage box is arranged in a space upstream of the fan and upstream of the heat exchanger. Specifically, the electrical component storage box is mounted between the nose and the grill in front of the heat exchanger. According to this configuration, it is possible to suppress an increase in flow path loss caused by disposing the electrical component storage box in the front.

JP 2002-156135 A

However, it is also conceivable to arrange the electrical component storage box at a position higher than the front edge of the drain pan in view of the relationship with the arrangement positions of the other components. For example, the electrical component storage box may be disposed at a position facing the heat exchanger.
In this case, during the cooling operation, the electrical component storage box is easily cooled by the heat exchanger, and there is a possibility that condensation occurs inside the electrical component storage box. In addition, there is a possibility that condensed water adhering to the outer surface of the electrical component box may enter the electrical component box. This may cause problems such as short-circuiting of electrical components.

  Accordingly, the present invention has been made to solve the above-described problems, and is an indoor unit of an air conditioner that can suppress generation of water in the electrical component box and entry of water into the electrical component box. The purpose is to provide.

  An indoor unit of an air conditioner according to a first aspect of the present invention includes a heat exchanger, a drain pan provided below the heat exchanger, and electrical components housed therein and disposed in front of the heat exchanger. An electrical component box, and a cover that is attached to the electrical component box and covers at least a part of a surface of the electrical component box that faces the heat exchanger.

  According to this configuration, since the cover is interposed between the heat exchanger and the electrical component box, the heat of the electrical component box is hardly absorbed by the heat exchanger. Therefore, condensation on the outer surface of the electrical component box and the interior of the electrical component box is suppressed. Thereby, problems, such as a short circuit of an electrical component, can be prevented.

  The indoor unit for an air conditioner according to a second aspect of the invention is characterized in that the cover covers at least a part of the upper surface of the electrical component box.

  According to this configuration, it is possible to prevent water from dripping onto the upper surface of the electrical component box. Thereby, it is possible to prevent water from entering the inside of the electrical component box.

  In the indoor unit of the air conditioner of the third invention, the surface of the cover that faces the heat exchanger extends horizontally or obliquely downward so as to approach the heat exchanger at least in the vicinity of the lower end. The drain pan is located below the end on the heat exchanger side.

  According to this configuration, when water that flows along the surface of the cover that faces the heat exchanger falls from the end of the cover, the water can be reliably guided to the drain pan.

  In the indoor unit of the air conditioner of the fourth invention, the surface of the cover that faces the heat exchanger extends along the outer surface of the electrical component box from the upper end portion to the intermediate portion, and from the intermediate portion, It extends horizontally or obliquely downward so as to approach the heat exchanger, and the drain pan is located below the end on the heat exchanger side.

According to this configuration, when water that flows along the surface of the cover that faces the heat exchanger falls from the end of the cover, the water can be reliably guided to the drain pan.
Furthermore, since the surface of the cover that faces the heat exchanger extends along the outer surface of the electrical component box from the upper end portion to the middle portion, it is possible to suppress an excessive increase in the space occupied by the cover and the electrical component box. .

  An indoor unit of an air conditioner according to a fifth aspect of the invention is characterized in that at least a part of an upper edge portion of the drain pan is covered with the cover when viewed forward from the heat exchanger side.

  According to this configuration, since the portion where the cover and the drain pan overlap is arranged between the heat exchanger and the electrical component box, cooling of the electrical component box by the heat exchanger is further suppressed, and the heat exchanger in the cover It is possible to reliably guide the water that has flowed along the surface opposite to the drain pan.

  As described above, according to the present invention, the following effects can be obtained.

  In the first invention, since the cover is interposed between the heat exchanger and the electrical component box, the heat of the electrical component box is hardly absorbed by the heat exchanger. Therefore, condensation on the outer surface of the electrical component box and the interior of the electrical component box is suppressed. Thereby, problems, such as a short circuit of an electrical component, can be prevented.

  In the second invention, it is possible to prevent water from dripping onto the upper surface of the electrical component box. Thereby, it is possible to prevent water from entering the inside of the electrical component box.

  In 3rd invention, when the water which flowed along the surface facing the heat exchanger in a cover falls from the edge part of a cover, the said water can be reliably guide | induced to a drain pan.

In 4th invention, when the water which flowed along the surface which opposes the heat exchanger in a cover falls from the edge part of a cover, the said water can be reliably guide | induced to a drain pan.
Furthermore, since the surface of the cover that faces the heat exchanger extends along the outer surface of the electrical component box from the upper end portion to the middle portion, it is possible to suppress an excessive increase in the space occupied by the cover and the electrical component box. .

  In the fifth invention, since the portion where the cover and the drain pan overlap is disposed between the heat exchanger and the electrical component box, cooling of the electrical component box by the heat exchanger is further suppressed, and heat exchange in the cover is performed. Water flowing along the surface facing the vessel can be reliably guided to the drain pan.

  Hereinafter, an indoor unit of an air conditioner according to an embodiment of the present invention will be described with reference to the drawings. This indoor unit is a wall-mounted type and is connected to an outdoor unit installed outside the room to constitute an air conditioner.

[Basic configuration]
Drawing 1 is a typical perspective view which looked at indoor unit 1 concerning the embodiment of the present invention from the diagonally upper front.
FIG. 2 is a schematic view of the indoor unit 1 shown in FIG. 1 as viewed from the front.
3 is a schematic cross-sectional view taken along the line AA of the indoor unit 1 shown in FIG.
FIG. 4 is a schematic diagram in which the front panel 20 of the indoor unit 1 shown in FIG. 2 is removed.

  As shown in FIG. 1, the indoor unit 1 of this embodiment has an elongated shape in one direction as a whole, and is attached to a wall surface in the room so that the longitudinal direction is horizontal. In the following description, the longitudinal direction of the indoor unit 1 is simply referred to as “longitudinal direction”. Further, the direction protruding from the wall to which the indoor unit 1 is attached is referred to as “front”, and the opposite direction is referred to as “rear”.

  The indoor unit 1 includes a main body unit 10 (main body) and a front panel 20 attached to the front surface of the main body unit 10.

[Main unit]
As shown in FIG. 3, the main unit 10 includes a main body casing 11, an indoor heat exchanger 12, a cross flow fan 13, an electrical component unit 14, a filter unit 15, a cleaning unit 16, and a front grill 17. It is comprised.

  The indoor heat exchanger 12, the cross flow fan 13, the electrical component unit 14, and the filter unit 15 are attached to the main body casing 11.

  The front grille 17 is attached to the front surface of the main body casing 11 so as to cover components such as the indoor heat exchanger 12, the cross flow fan 13, the electrical component unit 14, and the filter unit 15.

  The indoor heat exchanger 12 is a plate fin type heat exchanger configured by arranging a front heat exchanger 12 a and a rear heat exchanger 12 b in an inverted V shape with respect to the main body casing 11. In addition, in the indoor unit 1 of this embodiment, the auxiliary heat exchanger 12c is attached to the front surface of the front side heat exchanger 12a. An auxiliary heat exchanger 12d is attached to the rear surface of the rear heat exchanger 12b. The auxiliary heat exchanger 12c and the auxiliary heat exchanger 12d are for promoting heat exchange between the refrigerant and the air.

As shown in FIG. 1, the front grill 17 has a top surface inlet 17 a formed in the ceiling portion. The top surface suction port 17a is formed with the ceiling portion of the front grill 17 in a lattice shape.
Further, as shown in FIG. 4, front openings 17 b and 17 c are formed in the front upper portion of the front grill 17. The front openings 17b and 17c are each formed as one opening.
The front grille 17 is formed with an opening 17d that extends in parallel with the longitudinal direction of the indoor unit 1 below the front openings 17b and 17c. The cleaning unit 16 is fitted in the opening 17d.
Further, the front grille 17 is formed with an opening 17e for exposing the light emitting display part 42 forward at the center in the longitudinal direction, below the opening 17d. The opening 17 e is formed in a shape substantially corresponding to the front shape of the light emitting display portion 42, and the light emitting display portion 42 is inserted from the inside of the front grill 17 toward the outside.

  As shown in FIG. 1, with the front panel 20 closed, external air is supplied from the top suction port 17 a of the front grille 17 and the front suction port 20 a located at the top of the front panel 20 to the front grille 17. Is sucked into the inside.

  As shown in FIG. 3, a cross flow fan 13 is provided inside the inverted V shape of the indoor heat exchanger 12. The cross flow fan 13 is called an axial fan, and is arranged such that its axial direction is along the longitudinal direction of the indoor unit 1. The main body casing 11 is formed with a scroll portion 11 a having a curved wall surface behind the cross flow fan 13. With the scroll portion 11a, air can be smoothly guided from the cross flow fan 13 to the air outlet 17f that opens to the lower front side of the front grill 17.

  The main body casing 11 has an upper wall surface 11b so as to be positioned above the air outlet 17f. The upper wall surface 11b is formed integrally with a drain pan 11c located below the front heat exchanger 12a. In the present embodiment, the drain pan 11c is arranged so that the lower end of the front heat exchanger 12a is positioned in the drain pan 11c.

  An electrical component unit 14 is disposed at a position between the drain pan 11 c and the front panel 20. A rear drain pan 11d is disposed below the rear heat exchanger 12b.

  The main casing 11, the front grille 17, and the front panel 20 are horizontally long. Further, the air outlet 17 f is formed so as to extend along the longitudinal direction of the front grill 17.

  In the indoor unit 1, the indoor air sucked by the cross flow fan 13 from the top surface suction port 17 a and the front suction port 20 a on the upper surface is passed through the indoor heat exchanger 12 to exchange heat with the refrigerant. Air cooling or heating is performed. The air after the heat exchange is blown out into the room from the blower outlet 17f on the lower surface.

  The filter unit 15 is a pair of air filters 51 provided side by side in the longitudinal direction (indicated by a two-dot chain line in FIG. 3 and schematically indicated by hatching in FIG. 4 and omitted in FIG. 1). And a pinion 52 for moving the air filter 51. The pair of air filters 51 are arranged at positions facing the top surface suction port 17a and the front side openings 17b and 17c, and remove dust and the like mixed in the air passing through the top surface suction port 17a or the front side openings 17b and 17c. Can be removed.

The cleaning unit 16 extends in the longitudinal direction of the indoor unit 1 and rotates around the axis extending in the longitudinal direction, a comb 62 for scraping dust attached to the brush 61, and the front of the comb 62. A compression roller 63 that extends in the longitudinal direction of the indoor unit 1 and rotates, and a dust box 64 that stores dust compressed between the compression roller 63 and the comb 62.
The cleaning unit 16 is fitted to the front surface of the front grill 17 from the outside of the front grill 17 so that the brush 61 is held in contact with the air filter 51 of the filter unit 15.

  The air filter 51 is provided with a flexible rack (not shown) that meshes with the outer periphery of the pinion 52. By the rotation of the pinion 52, the air filter 51 is moved so as to be caught on the back surface side while the brush 61 is brought into contact with the front surface. At this time, dust or the like adhering to the air filter 51 is removed by the brush 61, and the dust or the like is compressed by the compression roller 63 and stored in the dust box 64.

[Electrical component unit]
Next, the electrical component unit 14 will be specifically described.
FIG. 5 is a schematic perspective view for explaining a state in which the front panel 20, the cleaning unit 16, and the front grille 17 are removed from the indoor unit 1.
FIG. 6 is a schematic perspective view showing the electrical component unit shown in FIG. 5, (a) is a schematic perspective view seen from the front diagonally upward, and (b) is a schematic perspective view seen from the diagonally upward rear side. is there.
FIG. 7 is a schematic perspective view showing the first cover member 43 and the second cover member 44 shown in FIG.
FIG. 8 is a schematic perspective view showing a state in which the first cover member 43 and the second cover member 44 are attached to the electrical component box, and FIG. 8A is a schematic perspective view seen from diagonally forward. ) Is a schematic perspective view of the rear obliquely viewed from above.
FIG. 9 is an enlarged schematic view of the vicinity of the electrical component unit 14 shown in FIG.

  As shown in FIG. 5, the electrical component unit 14 is disposed so as to be positioned at the lower front surface inside the front grille 17 in the main body unit 10. The electrical component unit 14 includes electrical components such as a terminal board, an AC circuit unit, a DC high voltage circuit unit, a DC low voltage circuit unit, and a CPU control unit as a power input unit connected to a commercial power source (AC 100 V or AC 200 V). The electrical component box 41 that accommodates the electrical component therein and the light emitting display unit 42 attached to the front surface of the electrical component box 41 are configured.

  As shown in FIG. 6, the electrical component box 41 has a substantially rectangular parallelepiped outer shape that extends elongatedly, and includes a rear case 41 a that covers the rear side, and a lid that covers from the front the electrical component accommodated inside the rear case 41 a. And a case 41b. As shown in FIG. 9, the electrical component box 41 faces the light emitting display portion 42 (see FIG. 4) forward in a state where the electrical component box 41 is arranged substantially parallel to the longitudinal direction of the drain pan 11 c at a position in front of the drain pan 11 c. Has been placed. Thus, by storing the electrical component in the electrical component box 41, it can be handled as a single electrical component unit, and the handling becomes easy.

  In the electrical component box 41, the lowermost portion of the electrical component box 41 is lower than the bottom of the drain pan 11c, and the uppermost portion of the electrical component box 41 is on the front side of the drain pan 11c. It arrange | positions so that it may become a position higher than an upper edge part.

  The light emitting display unit 42 includes a plurality of LEDs arranged side by side, and these LEDs emit light to display predetermined characters and the like. The front of the light emitting display unit 42 is covered by the front panel 20, but by emitting light that passes through the front panel 20 from the LED, it is possible to visually recognize the display of the light emitting display unit 42 from the outside. .

  The light emitting display section 42 is provided so as to protrude forward from the front surface of the electrical component box 41. In other words, the display surface of the light emitting display unit 42 is arranged in front of the front surface of the electrical component box 41. Thereby, the back surface of the front panel 20 can be reliably adhered to the display surface of the light emitting display unit 42. As a result, the display of the light emitting display unit 42 can be easily visually recognized from the outside.

  Further, since the light emitting display unit 42 is directly attached to the electrical component box 41, the wiring length of a lead wire or the like for electrically connecting the light emitting display unit 42 and the electrical component in the electrical component box 41 is shortened. can do.

As shown in FIGS. 5 and 8, the electrical component box 41 is covered from above with a first cover member 43 and a second cover member 44 in a state where it is installed in the main body casing 11.
The first cover member 43 is disposed so as to cover the right side when viewed from the light emitting display portion 42 side in the longitudinal direction of the electrical component box 41, and the second cover member 44 is disposed so as to cover the left side.

  As shown in FIG. 8, the first cover member 43 has a surface (hereinafter, referred to as a front surface of the electrical component box 41) opposite to a surface (hereinafter, referred to as a front surface of the electrical component box 41) of the electrical component box 41. A back cover portion 43a disposed to cover the electrical component box 41), and an upper surface cover portion 43b disposed to cover the upper surface of the electrical component box 41 in succession to the rear cover portion 43a. And a front cover portion 43c extending downward along the front surface of the electrical component box 41 in succession to the upper surface cover portion 43b. The back cover part 43a, the top cover part 43b, and the front cover part 43c are integrally provided.

  As shown in FIG. 9, the back cover part 43a extends substantially perpendicularly to the top cover part 43b from the rear edge of the top cover part 43b. And it has the inclination part 43d bent in the direction which leaves | separates from the front cover part 43c in the extension direction front-end | tip part, ie, the direction which approaches the indoor heat exchanger 12, and extends diagonally downward. The inclined portion 43 d is provided over the entire area of the first cover member 43 in the longitudinal direction.

  The front cover part 43c extends substantially perpendicularly to the upper surface cover part 43b from the front edge of the upper surface cover part 43b. The front cover portion 43c is bent at the front end in the extending direction, and can be hooked and fixed to a stepped portion formed on the front surface of the electrical component box 41.

  Further, the second cover member 44 is also arranged so as to cover the upper surface of the electrical component box 41 continuously with the rear cover portion 44a disposed so as to cover the rear surface of the electrical component box 41 and the rear cover portion 44a. An upper surface cover portion 44b, and a front surface cover portion 44c extending downward along the front surface of the electrical component box 41 in succession to the upper surface cover portion 44b. The back cover portion 44a, the top cover portion 44b, and the front cover portion 44c are integrally provided.

The back cover part 44a extends substantially perpendicularly to the top cover part 44b from the rear edge of the top cover part 44b. And it has the inclination part 44d bent in the direction which leaves | separates from the front cover part 44c in the extension direction front-end | tip part, ie, the direction which approaches the indoor heat exchanger 12, and extends diagonally downward. The inclined portion 44 d is provided over the entire area of the second cover member 44 in the longitudinal direction.
The front cover portion 44c extends substantially perpendicularly to the upper surface cover portion 44b from the front edge portion of the upper surface cover portion 44b.

  As shown in FIG. 7, the first cover member 43 and the second cover member 44 are fitted from above the electrical component box 41 so as to sandwich the electrical component box 41 between the back cover 43a, 44a and the front cover 43c, 44c. And fixed to the electrical component box 41.

  The first cover member 43 is installed such that the front cover portion 43 c is positioned on the right side of the light emitting display portion 42 when viewed from the light emitting display portion 42 side of the electrical component box 41. On the other hand, the second cover member 44 is installed such that the front cover portion 44 c is located on the left side of the light emitting display portion 42 when viewed from the light emitting display portion 42 side of the electrical component box 41.

  As shown in FIGS. 7 and 8, the upper cover portion 43 b of the first cover member 43 is more than the rear cover portion 43 a so as to cover the upper surface corresponding to the position of the light emitting display portion 42 in the longitudinal direction of the electrical component box 41. Also extends in the longitudinal direction. And the edge part of the said extension direction in the upper surface cover part 43b is contacting the upper surface cover part 44b of the 2nd cover member 44 in the state with almost no clearance gap.

  Further, the back cover portion 44 a of the second cover member 44 extends to the first cover member 43 side in the longitudinal direction of the electrical component box 41 from the top cover portion 44 b. And in the state attached to the electrical component box 41, the front-end | tip part of the said extension direction in the back cover part 44a is located in the back side of the light emission display part 42 in the said longitudinal direction, The back cover part 43a of the 1st cover member 43 (Overlaps the end portion of the back cover portion 43a).

  In the present embodiment, the notch shape of the back cover portion 44a (see FIG. 7) is provided between the back cover portion 44a and the back cover portion 43a at a substantially central portion in the longitudinal direction of the electrical component box 41. An opening 44e (see FIG. 8) is formed. The position of the opening 44e substantially corresponds to the position of the drive parts (such as an electric motor) of the filter unit 15 and the cleaning unit 16 disposed at the center in the longitudinal direction of the indoor unit 1. That is, the opening 44e is provided at a position different from the position where the pair of filters are arranged in the longitudinal direction of the indoor unit 1 (the position within the range indicated by F1 and F2 in FIG. 4).

  In addition, the upper surface of the electrical component box 41 is covered by the upper surface cover portion 43 b of the first cover member 43 and the upper surface cover portion 44 b of the second cover member 44.

  As shown in FIG. 9, the electrical component box 41 and the cover members 43 and 44 are installed on the front side of the drain pan 11 c and on the lower side of the cleaning unit 16, with the upper surface of the electrical component box 41 slightly lowering forward. The In the installed state, the upper side of the electrical component box 41 is covered with the cover members 43 and 44, and the front grille 17 is disposed in contact with the upper side of the cover members 43 and 44. . Further, a bottom surface of the dust box 64 in the cleaning unit 16 is disposed on the top surface so as to contact the front grille 17. Accordingly, it is possible to prevent water droplets from the upper surface from being applied to the electrical component box 41.

  Further, a back cover portion 43a and a back cover portion 44a are provided on the back surface of the electrical component box 41, and the lower end of the back cover portion 43a is inside the drain pan 11c. Accordingly, when water droplets are dropped on the back side of the electrical component box 41, the water enters the electrical component box 41 because it flows to the drain pan 11c along the back cover portion 43a (or the back cover portion 44a). There is nothing.

(Piping fixing part)
FIG. 10 is a perspective view of the main body casing 11 of the indoor unit 1 shown in FIG. 1 as viewed from the back side, (a) is a view from the left side toward the back side, and (b) is the back side. It is the figure seen from the slightly right side toward. 10 shows a state in which a pipe (not shown) and a pipe cover 70 arranged in the pipe installation groove 80 are removed.
FIG. 11 is a diagram illustrating a state in which the piping cover 70 of the indoor unit 1 illustrated in FIG. 10 is attached.

  As shown in FIG. 10, a pipe installation groove 80 extending in the vertical direction is formed at the end of the longitudinal direction on the back surface of the main body casing 11. A refrigerant pipe or the like is disposed in the pipe installation groove 80, and the refrigerant pipe is fixed in the pipe installation groove 80 by attaching the pipe cover 70.

  The pipe cover 70 is disposed at a position covering the pipe installation groove 80 and has a cover surface 71 having an opening 71a formed at the center thereof, and is bent from both edges of the cover surface 71 so as to be substantially perpendicular to the cover surface 71. And a pair of side plates 72 that form a surface. An extending plate portion extending further upward from the upper end of the cover surface 71 is provided. Further, an upper engagement portion 72 a extending obliquely upward from the upper end of the cover surface 71 is formed at the upper part of the pair of side plates 72. A lower engaging portion 72 b extending in a direction away from the cover surface 71 is formed at the lower portion of the side plate 72. The lower engaging portion 72b has a claw portion that protrudes inward (in the direction toward the other lower engaging portion) at the tip. An opening is formed at the corner between the lower engagement portion 72b and the cover surface 71.

  The pipe installation groove 80 includes a first wall surface portion 81 located at the longitudinal end portion of the main body casing 11, a second wall surface portion 82 disposed substantially parallel to the first wall surface portion 81 with a predetermined interval therebetween, Formed as a space between.

  The first wall surface portion 81 is formed with a guide rib 81a on the surface facing the outside of the pipe installation groove 80 so as to protrude from the surface and bend and extend on the surface. In the vicinity of the upper end portion of the first wall surface portion 81, the guide rib 81a is formed on the surface of the first wall surface portion 81 so as to have a shape that borders the shape corresponding to the upper contour shape of the upper engagement portion 72a in a side view. It extends.

  The second wall surface portion 82 has an upper exposed surface 82a and a lower exposed surface 82b that are exposed to the outside of the pipe installation groove 80 at the upper and lower portions (see FIG. 10B). The upper exposed surface 82 a and the lower exposed surface 82 b are surfaces parallel to the surface facing the outside of the first wall surface portion 81.

  The upper side of the upper exposed surface 82 a is covered from above by an upper member 83 extending in the longitudinal direction of the indoor unit 1. The upper member 83 is formed so as to extend in the longitudinal direction a groove 83a into which the tip of the upper engaging portion 72a of the pipe cover 70 moved upward along the upper exposed surface 82a can be fitted. Yes. A slope 84 constituting the back surface of the main casing 11 is continuous below the upper exposed surface 82a. The inclined surface 84 is a surface inclined obliquely downward toward the rear.

  The lower exposed surface 82b exposed at the lower portion of the second wall surface portion 82 is provided with an opening portion 82c for hooking the claw portion of one lower engaging portion 72b of the pipe cover 70. An opening 81b having the same shape is also provided at a position corresponding to the opening 82c of the second wall surface portion 82 in the first wall surface portion 81.

  When attaching the pipe cover 70 to the main casing 11, first, the upper portions of the first wall surface portion 81 and the second wall surface portion 82 are sandwiched between the pair of upper engaging portions 72 a. Then, it is moved obliquely forward and upward along the wall surface, and is oblique at the upper end of one upper engagement portion 72a with respect to a portion extending obliquely from the upper end of the first wall surface portion 81 to the edge on the back side in the upper portion of the guide rib 81a. The leading edge of the other upper engaging portion 72a is fitted into the groove 83a. Thereafter, the pipe cover 70 is moved so that the first wall surface portion 81 and the lower exposed surface 82b are sandwiched between the pair of lower engagement portions 72b, and the lower portion of the pipe cover 70 is pushed toward the main body casing 11 side, whereby a pair of The claw portions of the lower engaging portion 72b engage with the edges of the opening portion 82c and the opening portion 81b, respectively, and the lower portion of the pipe cover 70 is prevented from being separated from the main body casing 11. Thereby, as shown in FIG. 11, the pipe cover 70 is fixed in a state of covering the pipe installation groove 80 on the back surface of the indoor unit 1.

  As described above, the indoor unit 1 according to the present embodiment includes the indoor heat exchanger 12, the drain pan 11c provided below the indoor heat exchanger 12, and the electrical components housed in the room for heat exchange. At least a part of the surface of the electrical component box 41 facing the indoor heat exchanger 12, which is a separate member from the electrical component box 41 and the drain pan 11 c disposed in front of the chamber 12 and attached to the electrical component box 41. And a first cover member 43 and a second cover member 44 that cover the surface.

According to this configuration, since the first cover member 43 and the second cover member 44 are interposed between the indoor heat exchanger 12 and the electrical component box 41, the heat of the electrical component box 41 is transferred to the indoor heat exchanger 12. It becomes difficult to absorb heat. Therefore, condensation on the outer surface of the electrical component box 41 and the interior of the electrical component box 41 is suppressed. Thereby, problems, such as a short circuit of an electrical component, can be prevented.
Furthermore, the first cover member 43 and the second cover member 44 are separate members from the drain pan 11c. Therefore, even when the electrical component box 41 is disposed at any position facing the indoor heat exchanger 12, the first cover member 43 and the second cover member 44 surely face the indoor heat exchanger 12. Can cover the surface. That is, the arrangement position of the electrical component box 41 can be determined without being excessively restricted by the position and shape of the drain pan 11c.

  In the present embodiment, an opening 44e is formed in the back cover portion at a substantially central portion in the longitudinal direction of the electrical component box 41. The position of the opening 44e is in the longitudinal direction of the indoor unit 1. The positions of the drive parts of the filter unit 15 and the cleaning unit 16 disposed substantially at the center are substantially corresponding. That is, the opening 44e is provided at a position different from the position where the pair of air filters 51 are disposed in the longitudinal direction of the indoor unit 1 (the position within the range indicated by F1 and F2 in FIG. 4). . Therefore, the position of the opening 44e has a relatively high temperature due to heat generated from the drive components and the like, and since it is away from the arrangement position of the air filter 51, the flow of wind is also small. Therefore, the electrical component box 41 is not excessively cooled through the opening 44e and dew condensation does not occur.

  In the indoor unit 1 according to the present embodiment, the first cover member 43 and the second cover member 44 cover at least part of the upper surface of the electrical component box 41, so that water drops on the upper surface of the electrical component box 41. Can be prevented. Thereby, it is possible to prevent water from entering the inside of the electrical component box 41.

  Further, in the indoor unit 1 according to the present embodiment, the back cover portions 43a and 44a of the first cover member 43 and the second cover member 44 are obliquely downward so as to approach the indoor heat exchanger 12 at least in the vicinity of the lower end portion. The drain pan 11c is positioned below the end on the indoor heat exchanger 12 side.

According to this structure, when the water which flowed along the back cover parts 43a and 44a falls from an edge part, the said water can be reliably guide | induced to the drain pan 11c.
In addition, the structure which extends horizontally is not restricted to the structure where the lower end part vicinity of back cover parts 43a and 44a extends diagonally downward like this embodiment.

  Moreover, as for the indoor unit 1 which concerns on this embodiment, the back cover parts 43a and 44a extend along the outer surface of the electrical component box 41 from an upper end part to an intermediate part, and approach the indoor heat exchanger 12 from the said intermediate part. The drain pan 11c is positioned below the end on the indoor heat exchanger 12 side.

  According to this configuration, the back cover portions 43a and 44a extend from the upper end portion to the middle portion so as to follow the outer surface of the electrical component box 41, so that the space occupied by the rear cover portions 43a and 44a and the electrical component box 41 is excessive. Can be suppressed.

  Moreover, when the indoor unit 1 according to the present embodiment is viewed forward from the indoor heat exchanger 12 side, at least a part of the upper edge portion of the drain pan 11c is covered by the first cover member 43 and the second cover member 44. It has been broken.

  According to this configuration, the portion where the first cover member 43 and the second cover member 44 and the drain pan 11c overlap is disposed between the indoor heat exchanger 12 and the electrical component box 41. Cooling of the product box 41 is further suppressed, and water flowing along the surface of the first cover member 43 and the second cover member 44 facing the indoor heat exchanger 12 can be reliably guided to the drain pan 11c.

  As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

(1) As in this embodiment, the rear cover portions 43a and 44a may be configured without forming openings such as the openings 44e or notches. For example, as viewed forward from the indoor heat exchanger 12 on the back surface of the electrical component box 41 located within the range in which the air filter 51 is disposed in the longitudinal direction of the indoor unit 1 (in the ranges indicated by F1 and F2 in FIG. 4). It is good also as a structure which covers all the range from the upper edge part of the drain pan 11c to a back upper end with the back cover parts 43a and 44a. In this case, cooling of the electrical component box 41 can be prevented more reliably.

(2) In the present embodiment, the upper surface cover portion 43b of the first cover member 43 and the upper surface cover portion 44b of the second cover member 44 are appropriately formed with through holes for passing wiring or the like. It is good also as a structure which does not form the said through-hole in order to improve waterproofness.

  If the present invention is used, in an indoor unit of an air conditioner, generation of water in the electrical component box and entry of water into the electrical component box can be suppressed.

The typical perspective view showing the indoor unit concerning the embodiment of the present invention. The front view of the indoor unit shown in FIG. AA sectional drawing of the indoor unit shown in FIG. The figure which removed the front panel of the indoor unit shown in FIG. The perspective schematic diagram which decomposed | disassembled the indoor unit. The perspective schematic diagram which shows an electrical component unit. The perspective schematic diagram which shows a cover member. The perspective schematic diagram which shows the state which attached the cover member to the electrical component box. The figure which expands and shows typically the electrical equipment unit vicinity part shown in FIG. The perspective schematic diagram which looked at the main body casing of the indoor unit shown in FIG. 1 from the back side. The perspective schematic diagram which shows the state which attached the piping cover to the main body casing shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit 11c Drain pan 12 Indoor heat exchanger 41 Electrical component box 43 1st cover member (cover)
44 Second cover member (cover)

Claims (5)

A heat exchanger (12);
A drain pan (11c) provided below the heat exchanger;
An electrical component box (41) that houses electrical components inside and is disposed in front of the heat exchanger;
A cover (43, 44) that is attached to the electrical component box and covers at least a part of a surface of the electrical component box that faces the heat exchanger;
An air conditioner indoor unit (1) comprising: The indoor unit of an air conditioner according to claim 1, wherein the cover covers at least a part of an upper surface of the electrical component box. The surface of the cover facing the heat exchanger extends horizontally or obliquely downward so as to approach the heat exchanger at least in the vicinity of the lower end, and the drain pan is located below the end on the heat exchanger side. The indoor unit of the air conditioner of Claim 1 or Claim 2 located. A surface of the cover that faces the heat exchanger extends along the outer surface of the electrical component box from an upper end portion to an intermediate portion, and extends horizontally or obliquely downward from the intermediate portion so as to approach the heat exchanger. The indoor unit of an air conditioner according to claim 3, wherein the drain pan is located below an end portion on the heat exchanger side. The indoor unit of the air conditioner according to any one of claims 1 to 4, wherein when viewed from the heat exchanger side forward, at least a part of an upper edge portion of the drain pan is covered by the cover. .

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