JP4187034B2 - Indoor unit of air conditioner - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner.

  In an indoor unit of an air conditioner, a gap may be defined in the vicinity of the air outlet formed in the casing by various components that are also present in the vicinity of the air outlet. In such a case, during the operation of the indoor unit, room air containing moisture that is entrained in the airflow blown out from the inside of the casing into the room enters the gap, and moisture contained in the room air is condensed in the gap. May grow and dripping outside the casing. In particular, when the indoor unit is performing a cooling operation, the air blown into the room through the air outlet is low in temperature, so the room air that has entered the gap near the air outlet is cooled by such cold air. , Condensation water is easy to grow. In particular, when the indoor unit is performing a cooling operation or a dehumidifying operation, the indoor air that has entered the gap near the outlet is cooled by the cold air transmitted from the heat exchanger functioning as an evaporator inside the casing. And condensate water growth can be encouraged.

Therefore, in Patent Document 1, a water absorbing material is installed at the entrance and inside of a space formed in the vicinity of the blowout port to prevent such dripping of condensation water.
JP-A-6-147527

  However, in the case of Patent Document 1, the cost is increased by the amount of the water-absorbing material, and it is not necessarily a good idea.

  An object of the present invention is to easily suppress the growth of condensed water in the vicinity of a blowout outlet in an indoor unit of an air conditioner, and consequently suppress the dripping thereof.

  The indoor unit of the air conditioning apparatus according to the first aspect includes a casing and a gap defining member. The casing is formed with an inlet and an outlet for indoor air. The gap defining member defines a gap through which room air enters in the vicinity of the outlet. The gap defining member includes a first part and a second part. The first part is located in the vicinity of the outlet and has a first surface. The first surface defines at least a part of the outline of the gap. The second part has a second surface. The second surface faces the first surface and defines at least a part of the outline of the gap. On at least one of the first surface and the second surface, a ventilation resistance increasing region having an uneven shape that increases the ventilation resistance in the gap is formed.

  The indoor unit of the air conditioning apparatus according to the second invention includes a casing and a gap defining member. The casing is formed with an inlet and an outlet for indoor air. The gap defining member defines a gap through which room air enters in the vicinity of the outlet. The gap defining member includes a first part and a second part. The first part is located in the vicinity of the outlet and has a first surface. The first surface defines at least a part of the outline of the gap. The second part has a second surface. The second surface faces the first surface and defines at least a part of the outline of the gap. Ventilation resistance increasing regions having shapes that fit each other are formed on both the first surface and the second surface.

  An indoor unit of an air conditioner according to a third aspect is the indoor unit according to the first aspect or the second aspect, wherein the first part further includes a third surface. Unlike the first surface, the third surface defines at least a part of the outline of the outlet.

  An indoor unit of an air conditioner according to a fourth aspect of the present invention is the indoor unit according to the third aspect of the present invention, wherein the first part is plate-shaped. The third surface is on the back side of the first surface.

  An indoor unit of an air conditioner according to a fifth invention is the indoor unit according to any one of the first to fourth inventions, wherein the first part and the second part are separate members.

  An indoor unit of an air conditioner according to a sixth aspect of the present invention is the indoor unit according to the fifth aspect, wherein the second part is a heat insulating material.

  An indoor unit of an air conditioner according to a seventh aspect of the present invention is the indoor unit according to the first aspect of the present invention, and has an uneven shape that increases the airflow resistance in the gap on both the first surface and the second surface. A ventilation resistance increasing region is formed.

  An indoor unit of an air conditioner according to an eighth aspect of the invention is the indoor unit according to the seventh aspect of the invention, wherein both the first surface and the second surface have an uneven shape that fits each other. A region is formed.

  An indoor unit of an air conditioner according to a ninth aspect is the indoor unit according to any one of the first to eighth aspects, further comprising a heat exchanger and a drain pan. A heat exchanger is arrange | positioned inside a casing and performs heat exchange between the air suck | inhaled by the inside of the casing through the suction inlet. The drain pan is close to the heat exchanger and receives drain water generated in the heat exchanger. The casing has a front panel as well as a back casing. The front panel is formed with a suction port and a blowout port. The back casing is attached to the wall surface. The gap defining member is disposed between the drain pan and the front panel.

  An indoor unit of an air conditioner according to a tenth aspect includes a casing and a gap defining member. The casing is formed with an inlet and an outlet for indoor air. The gap defining member defines a gap through which room air enters in the vicinity of the outlet. The gap defining member includes a plate-like portion and a heat insulating material. The plate-like portion has a third surface and a first surface. The third surface defines at least a part of the outline of the outlet. The first surface is on the back side of the third surface and defines at least a portion of the outline of the gap. The heat insulating material has a second surface. The second surface faces the first surface and defines at least a part of the outline of the gap. On both the first surface and the second surface, a ventilation resistance increasing region having an uneven shape that increases the ventilation resistance in the gap and fits each other is formed.

  An indoor unit of an air conditioner according to an eleventh aspect of the present invention is the indoor unit according to any one of the first to tenth aspects, wherein a water retaining groove is formed on at least one of the first surface and the second surface. ing.

An indoor unit of an air conditioner according to a twelfth aspect includes a casing and a gap defining member. The casing is formed with an inlet and an outlet for indoor air. The gap defining member defines a gap through which room air enters in the vicinity of the outlet. A ventilation resistance increasing region is formed in the gap defining member. The ventilation resistance increasing region has a shape that increases the ventilation resistance in the gap.

  In this indoor unit, a gap is defined in the vicinity of the outlet by a gap defining member present in the vicinity of the outlet. The gap may be a gap formed between a plurality of members serving as a gap defining member, or may be a gap formed between a plurality of parts of a single member serving as a gap defining member. Good. And the ventilation resistance increase area | region which suppresses that the airflow formed by the driving | operation of an indoor unit enters the said clearance gap is formed in the clearance gap definition member. As a result, the room air containing moisture entrained in the airflow is prevented from entering the gap formed in the vicinity of the outlet. Thereby, in this indoor unit, the growth of the dew condensation water in the vicinity of the outlet can be easily suppressed, and as a result, the dripping can be suppressed.

An indoor unit of an air conditioner according to a thirteenth aspect of the present invention is the indoor unit according to the twelfth aspect of the present invention, further comprising a heat exchanger and a drain pan. A heat exchanger is arrange | positioned inside a casing and performs heat exchange between the air suck | inhaled by the inside of the casing via the suction inlet. The drain pan is close to the heat exchanger and receives drain water generated in the heat exchanger. The casing has a front panel and a back casing. The front panel is formed with a suction port and a blowout port. The back casing is attached to the wall surface. The gap defining member is disposed between the drain pan and the front panel.

  This indoor unit is a wall-mounted indoor unit. In this indoor unit, the gap defining member is disposed between the front panel in which the air outlet is formed and the drain pan adjacent to the heat exchanger. Therefore, when the heat exchanger functions as an evaporator, such as during cooling operation or dehumidifying operation, the clearance defined by the clearance defining member is easily cooled due to the presence of the heat exchanger and is likely to cause condensation. It becomes. Therefore, in this indoor unit, it is particularly useful to employ a structure that suppresses room air from entering a gap formed in the vicinity of the outlet.

An indoor unit of an air conditioner according to a fourteenth aspect of the present invention is the indoor unit according to the twelfth or thirteenth aspect of the present invention, and the gap defining member is disposed between the suction port and the blowout port in a front view.

  In this indoor unit, the gap defining member is disposed between the suction port and the outlet in front view. Accordingly, the gap defined by the gap defining member is likely to be a passage for airflow formed by the operation of the indoor unit, and the air blown into the room through the outlet as in the cooling operation is low temperature. In this case, it becomes an environment that is easily cooled by the blown-out air and is likely to cause dew condensation. Therefore, in this indoor unit, it is particularly useful to employ a structure that suppresses room air from entering a gap formed in the vicinity of the outlet.

An indoor unit of an air conditioner according to a fifteenth aspect of the present invention is the indoor unit according to any of the twelfth to fourteenth aspects of the present invention, wherein the gap defining member includes a plate-like portion. The plate-like portion has a first surface and a second surface. The first surface defines at least a part of the outline of the outlet. The second surface is on the back side of the first surface and defines at least a part of the outline of the gap. The ventilation resistance increasing region is formed on the second surface.

  In this indoor unit, the surface having the plate-like portion (first surface) defines at least a part of the outline of the outlet, and the back surface (second surface) defines at least a part of the outline of the gap. ing. That is, the gap is adjacent to the outlet through the plate-like portion, and the airflow formed by the operation of the indoor unit easily reaches the inlet of the gap. In view of this, the second surface of the plate-like portion is devised to prevent airflow formed by the operation of the indoor unit from entering the gap. Therefore, in this indoor unit, indoor air can be prevented from entering a gap formed in the vicinity of the outlet.

An indoor unit of an air conditioner according to a sixteenth aspect of the present invention is the indoor unit according to any of the twelfth to fourteenth aspects of the present invention, wherein the gap defining member includes a plate-like portion and a heat insulating material. The plate-like portion has a first surface and a second surface. The first surface defines at least a part of the outline of the outlet. The second surface is on the back side of the first surface and defines at least a part of the outline of the gap. The third surface faces the second surface and defines at least a part of the outline of the gap. The ventilation resistance increasing region is formed on the third surface.

  In this indoor unit, the surface having the plate-like portion (first surface) defines at least a part of the outline of the outlet, and the back surface (second surface) defines at least a part of the outline of the gap. ing. Further, a surface (third surface) with a heat insulating material facing the second surface of the plate-like portion defines at least a part of the outline of the gap. That is, the gap is adjacent to the outlet through the plate-like portion, and the airflow formed by the operation of the indoor unit easily reaches the inlet of the gap. Thus, the third surface of the heat insulating material is devised to prevent airflow formed by the operation of the indoor unit from entering the gap. Therefore, in this indoor unit, indoor air can be prevented from entering a gap formed in the vicinity of the outlet.

An indoor unit of an air conditioner according to a seventeenth aspect of the present invention is the indoor unit according to any one of the twelfth to sixteenth aspects of the present invention, and the ventilation resistance increasing region has an uneven shape.

  In this indoor unit, the gap defining member has an uneven surface, and this uneven surface defines at least a part of the outline of the gap. Therefore, in this indoor unit, the ventilation resistance of the gap formed in the vicinity of the outlet can be increased.

An indoor unit of an air conditioner according to an eighteenth aspect of the present invention is the indoor unit according to the seventeenth aspect of the present invention, wherein a water retention groove is formed in the ventilation resistance increasing region.

  In this indoor unit, a water retaining groove is formed on the uneven surface of the gap defining member. Thereby, in this indoor unit, the dew condensation water produced in the said clearance gap can be hold | maintained in a water retention groove | channel, and dripping of dew condensation water can be suppressed. Moreover, the water surface of the dew condensation water held in the water retention groove draws a contour that rises from the opening surface of the water retention groove due to the surface tension. Therefore, in this indoor unit, the gap formed in the vicinity of the outlet is sealed against the air flow formed by the operation of the indoor unit by the dew condensation water held in the water retention groove, so that the ventilation resistance of the gap is reduced. It can be further increased.

An indoor unit of an air conditioner according to a nineteenth aspect of the present invention is the indoor unit according to any one of the twelfth to fourteenth aspects, wherein the gap defining member includes a plate-like portion and a heat insulating material. The plate-like portion has a first surface and a second surface. The first surface defines at least a part of the outline of the outlet. The second surface is on the back side of the first surface and defines at least a part of the outline of the gap. The heat insulating material has a third surface facing the second surface and defining at least a part of the outline of the gap. The ventilation resistance increasing region is formed on the second surface and the third surface, and has an uneven shape that fits the second surface and the third surface.

  In this indoor unit, the surface having the plate-like portion (first surface) defines at least a part of the outline of the outlet, and the back surface (second surface) defines at least a part of the outline of the gap. ing. Further, a surface (third surface) with a heat insulating material facing the second surface of the plate-like portion defines at least a part of the outline of the gap. That is, the gap is adjacent to the outlet through the plate-like portion, and the airflow formed by the operation of the indoor unit easily reaches the inlet of the gap. Therefore, the second surface of the plate-like portion and the third surface of the heat insulating material are devised to prevent airflow formed by the operation of the indoor unit from entering the gap. More specifically, the second surface of the plate-like portion and the third surface of the heat insulating material have an uneven shape, and the uneven surface defines at least a part of the outline of the gap. Further, the concave and convex second surface and third surface are fitted to each other. Therefore, in this indoor unit, the ventilation resistance of the gap formed in the vicinity of the outlet can be increased.

An indoor unit of an air conditioner pertaining to a twentieth invention is the indoor unit pertaining to the nineteenth invention, wherein a water retention groove is formed on at least one of the second surface and the third surface.

  In this indoor unit, a water retaining groove is formed on the uneven surface of the gap defining member. Thereby, in this indoor unit, the dew condensation water produced in the said clearance gap can be hold | maintained in a water retention groove | channel, and dripping of dew condensation water can be suppressed. Moreover, the water surface of the dew condensation water held in the water retention groove draws a contour that rises from the opening surface of the water retention groove due to the surface tension. Therefore, in this indoor unit, the gap formed in the vicinity of the outlet is sealed against the air flow formed by the operation of the indoor unit by the dew condensation water held in the water retention groove, so that the ventilation resistance of the gap is reduced. It can be further increased.

In the indoor unit of the air conditioner according to the present invention, it is possible to easily suppress the growth of condensed water in the vicinity of the outlet, and to suppress the dripping.

  Hereinafter, the indoor unit 2 of the air conditioning apparatus 1 concerning 1st Embodiment of this invention is demonstrated.

<First Embodiment>
(1) Appearance of Air Conditioner FIG. 1 is a view showing an appearance of an air conditioner 1 including an indoor unit 2 according to the first embodiment of the present invention.

  The air conditioner 1 includes an indoor unit 2 that is installed on an indoor wall surface, an outdoor unit 3 that is installed outdoors, and a refrigerant pipe 4 that connects the indoor unit 2 and the outdoor unit 3. Equipment / valves accommodated in the casings 23 and 30 of the units 2 and 3 and the refrigerant pipe 4 are connected to form a refrigerant circuit.

(2) Refrigerant Circuit of Air Conditioner FIG. 2 is a diagram showing a schematic refrigerant circuit of the air conditioner 1. This refrigerant circuit mainly includes an indoor heat exchanger 21, an accumulator 31, a compressor 32, a four-way switching valve 33, an outdoor heat exchanger 34, and an expansion valve 35.

  The indoor unit 2 has an indoor heat exchanger 21, and the indoor heat exchanger 21 exchanges heat with indoor air. The indoor unit 2 has an indoor fan 22. When the indoor fan 22 is driven, an air flow is formed in the casing 23 of the indoor unit 2, whereby indoor air is sucked into the casing 23 from the room, and the sucked air and the indoor heat exchanger 21 are Heat exchange is performed between the two, and the air after the heat exchange is blown out from the casing 23 into the room. The indoor fan 22 has an elongated cylindrical impeller 22a and a fan motor 22b that rotationally drives the impeller 22a, and blows out air in a direction intersecting with the rotation axis A1 (see FIG. 3) of the impeller 22a. It is a cross flow fan. The detailed configuration of the indoor unit 2 will be described later.

  The outdoor unit 3 is connected to the compressor 32, the four-way switching valve 33 connected to the discharge side of the compressor 32, the accumulator 31 connected to the suction side of the compressor 32, and the four-way switching valve 33. The outdoor heat exchanger 34 and an expansion valve 35 connected to the outdoor heat exchanger 34 are provided. The expansion valve 35 is connected to the liquid refrigerant pipe 41 via the liquid side closing valve 36, and is connected to one end of the indoor heat exchanger 21 via the liquid refrigerant pipe 41. The four-way switching valve 33 is connected to a gas refrigerant pipe 42 via a gas side closing valve 37 and is connected to the other end of the indoor heat exchanger 21 via the gas refrigerant pipe 42. The refrigerant pipes 41 and 42 correspond to the refrigerant pipe 4 in FIG. The outdoor unit 3 has an outdoor fan 38. When the outdoor fan 38 is driven, an airflow is formed in the casing 30 of the outdoor unit 3, whereby outdoor air as a heat source is sucked into the casing 30 from the outside, and the sucked air and the outdoor heat exchanger The heat exchange is performed between the air and the air, and the air after the heat exchange is blown out of the casing 30 to the outside. The outdoor fan 38 has an impeller 38a having propeller-shaped blades, and a fan motor 38b that rotationally drives the impeller 38a, and is a propeller fan that blows air in the rotation axis direction of the impeller 38a.

(3) Configuration of Indoor Unit As shown in FIG. 1, the indoor unit 2 has a casing 23 that is long in the left-right direction when viewed from the front. Inside the casing 23, the indoor heat exchanger 21 and An indoor fan 22 is accommodated.

a) Casing As shown in FIGS. 1 and 3, the casing 23 mainly includes a front panel 51 and a back casing 57.

  The front panel 51 mainly includes a top surface portion 52, a front surface portion 53, a right side surface portion 54, a left side surface portion 55, and a bottom surface portion 56. The top surface portion 52 forms the top surface of the casing 23. The top surface portion 52 is formed with a suction port 52 a composed of a plurality of slit-shaped openings along the width direction of the casing 23. In addition, the width direction of the casing 23 means the left-right direction in front view. The front part 53 forms the front of the casing 23. A suction port 53 a made of an opening along the width direction of the casing 23 is formed at a position of the front surface portion 53 on the top surface portion 52 side. The right side surface portion 54 forms the right side surface of the casing 23 in the front view of the indoor unit 2, and the left side surface portion 55 forms the left side surface of the casing 23 in the front view of the indoor unit 2. The bottom surface part 56 forms the bottom surface of the casing 23. A blowout port 56 a made of an opening along the width direction of the casing 23 is provided at a position on the front surface 53 side of the bottom surface portion 56. Further, a flap 58 for guiding the air blown into the room is provided at the blowout port 56a. The flap 58 is provided so as to be rotatable about an axis parallel to the width direction of the casing 23. The flap 58 can be opened and closed by being driven by a flap motor (not shown).

  The back casing 57 forms the back surface of the indoor unit 2 and is installed on the wall surface of the room.

b) Indoor Fan FIG. 5 is a perspective view of the indoor unit 2 in a state in which components such as the front panel 51 and the filter 25 are removed.

  The indoor fan 22 is a cross flow fan, and mainly includes an impeller 22a and a fan motor 22b. The impeller 22a has an elongated and substantially cylindrical shape, and a plurality of wings are provided on a side surface thereof. The fan motor 22b rotationally drives the impeller 22a around a rotation axis A1 that passes through substantially the center of the top and bottom surfaces of the impeller 22a. The outer shape of the indoor fan 22 is generally formed by an impeller 22a and has a substantially cylindrical shape. As shown in FIG. 5, the substantially cylindrical indoor fan 22 has an upper surface and a bottom surface that face the side surfaces 54 and 55 of the front panel 51 in parallel and a width direction that is parallel to the width direction of the casing 23. Is arranged. In addition, the width direction of the substantially cylindrical indoor fan 22 means the height direction of the cylinder. Further, as shown in FIG. 3, the indoor fan 22 is positioned at substantially the center of the internal space defined by the casing 23 in a side view, and is substantially the same width as the casing 23 in a front view as shown in FIG. have.

  When the impeller 22a is rotationally driven by the fan motor 22b, an air flow is formed in the casing 23. That is, room air flows into the casing 23 through the suction ports 52a and 53a. The air flowing into the casing 23 passes through the indoor heat exchanger 21, reaches the indoor fan 22, is caught in the rotation of the impeller 22 a, and is blown out below the indoor fan 22. The air blown down to the indoor fan 22 reaches a blowout port 56a formed in the casing 23 along a guide surface 70a (described later) of a scroll member 70 disposed below the indoor fan 22. It is guided and sent out indoors again.

c) Indoor heat exchanger The indoor heat exchanger 21 mainly has a front side heat exchanger 61 and a back side heat exchanger 62. The indoor heat exchanger 21 has an inverted V shape when viewed from the side by connecting the front heat exchanger 61 and the rear heat exchanger 62 to each other. Moreover, the indoor heat exchanger 21 has substantially the same width as the casing 23 in a front view, and covers the upper part and the front side of the indoor fan 22 as shown in FIG.

  The indoor heat exchanger 21 is opposed to suction ports 52a and 53a formed in the casing 23, and a filter 25 is disposed between the suction ports 52a and 53a and the indoor heat exchanger 21. The filter 25 adsorbs dust, dust, and the like contained in the air flowing into the casing 23 through the suction ports 52a and 53a by driving the indoor fan 22, and the air from which these are removed is sent to the indoor heat exchanger 21. And play a role.

d) Scroll member The scroll member 70 is disposed inside the casing 23 at a position on the bottom surface 56 side and the back casing 57 side of the front panel 51. The scroll member 70 has substantially the same width as the casing 23 in a front view, and covers the back side and the lower part of the indoor fan 22. That is, the scroll member 70 exists on the opposite side of the indoor heat exchanger 21 with respect to the indoor fan 22.

  The scroll member 70 has a guide surface 70 a that guides the air that has flowed downstream of the indoor fan 22 to the vicinity of the outlet 56 a formed in the casing 23 by driving the indoor fan 22. As shown in FIG. 3, the guide surface 70 a has a generally smooth curve in side view, and the center of curvature of the curve drawn by the guide surface 70 a exists on the indoor fan 22 side. The upper end of the guide surface 70a is substantially at the same position in the vertical direction as the upper end of the indoor fan 22, and the left end of the guide surface 70a in a side view is substantially the same position as the left end of the indoor fan 22 in a side view. The guide surface 70a has substantially the same width as the casing 23 in a front view.

e) Drain pan The drain pan 24 is disposed below the front-side heat exchanger 61 and above the outlet 56a. As shown in FIG. 4, the drain pan 24 mainly includes a bottom surface portion 24a, a front side wall portion 24b, and a back side wall portion 24c. The front side wall portion 24b extends obliquely upward from the position closest to the bottom surface portion 24a in the front view toward the front side, and the back side wall portion 24c is located on the innermost side of the bottom surface portion 24a in the front view. It extends slightly upward from the position toward the near side. The bottom surface portion 24a and the side wall portions 24b and 24c have substantially the same width as the front-side heat exchanger 61 in a front view. The bottom surface portion 24a and the side wall portions 24b and 24c are integrally formed. As a result, the drain pan 24 is configured to receive drain water that is generated on the surface of the front-side heat exchanger 61 and falls through the surface.

  The air passing through the indoor heat exchanger 21 by the drive of the indoor fan 22 exchanges heat with the refrigerant flowing through the heat transfer pipe 63 of the indoor heat exchanger 21 to be cooled during the cooling operation or the dehumidifying operation, and during the heating operation. Heated. And at the time of air_conditionaing | cooling operation or dehumidification operation, the water | moisture content contained in the air may condense on the surface of the indoor heat exchanger 21. FIG. The water condensed in the front side heat exchanger 61 is received and collected by the drain pan 24 disposed below the front side heat exchanger 61, and after collection, a drain hose (not shown) communicating with the drain pan 24, etc. It flows along the predetermined path | route prescribed | regulated by (1), and is discharged | emitted out of the casing 23. FIG.

f) Plate-shaped part FIG. 6 is a perspective view of the indoor unit 2 in a state where components such as the heat insulating material 27 (described later) and the indoor fan 22 are further removed from the state of FIG.

  As shown in FIG. 4, the plate-like portion 26 is formed integrally with the drain pan 24 and extends substantially horizontally from the boundary between the bottom surface portion 24 a of the drain pan 24 and the front side wall portion 24 b to the vicinity of the front panel 51. ing. The plate-like portion 26 has substantially the same width as the drain pan 24 in a front view. The plate-like portion 26 and the bottom surface portion 24a of the drain pan 24 define the same plane.

  The plate-like portion 26 has a first surface 26a facing downward and a second surface 26b on the back side of the first surface 26a and facing upward. The first surface 26a defines the contour above the outlet 56a. And the plate-shaped part 26a has the ventilation resistance increase area | region C1 shown with the broken line in FIG. 4 in the 2nd surface 26b side, and the ventilation resistance increase area | region C1 has uneven | corrugated shape. In the ventilation resistance increasing region C1, a plurality of water retaining grooves T1 having substantially the same width as the entire plate-like portion 26 are formed in a front view, and the plurality of water retaining grooves T1 are arranged in parallel in the left-right direction in the side view. It is out.

g) Heat Insulating Material In the space surrounded by the front part 53 of the front panel 51, the front side wall part 24b of the drain pan 24, and the plate-like part 26, a heat insulating material 27 formed in accordance with the shape of the space is provided. Has been placed. The heat insulating material 27 has substantially the same width as the drain pan 24 in a front view. The heat insulating material 27 is made of styrene foam, and cold air from the adjacent front side heat exchanger 61 across the front side wall portion 24b of the drain pan 24 is transmitted to the front panel 51 side, and the vicinity of the front panel 51 is excessively cooled. This is to prevent this.

  The heat insulating material 27 has a third surface 27 a facing downward facing the second surface 26 b of the plate-like portion 26. A gap S1 is formed between the third surface 27a of the heat insulating material 27 and the second surface 26b of the plate-like portion 26, and the third surface 27a of the heat insulating material 27 has a contour above the gap S1. The second surface 26b of the plate-like portion 26 defines the lower contour of the gap S1. And the heat insulating material 27 has the ventilation resistance increase area | region C2 shown with the broken line in FIG. 4 in the 3rd surface 27a side, and the ventilation resistance increase area | region C2 has uneven | corrugated shape. In the ventilation resistance increasing region C2, a plurality of protrusions Y1 having a shape that can fit into the plurality of water retention grooves T1 formed on the second surface 26b of the plate-like portion 26 are formed, and the plurality of protrusions Y1. Are arranged in parallel in the left-right direction in a side view. The protrusion Y1 has substantially the same width as the entire plate-like portion 26 in a front view.

  Thus, since the above-described ventilation resistance increasing regions C1 and C2 are formed in the plate-like portion 26 and the heat insulating material 27, respectively, the ventilation resistance of the gap S1 increases, and the airflow blown out from the outlet 56a It is difficult to enter S1. Further, since the water retention groove T1 is formed in the ventilation resistance increasing region C1, indoor air including moisture enters the gap S1, and enters the room through the cool air from the front side heat exchanger 61 or the air outlet 56a. Even if it is cooled by the cold air blown out and dew condensation occurs, the dew condensation water will be caught in the water retaining groove T1, and dripping out of the casing 23 will be suppressed. Furthermore, since the surface of the dew condensation water collected in the water retention groove T1 has a contour that rises higher than the opening surface of the water retention groove T1 due to the surface tension, the dew condensation water collected in the water retention groove T1 enters the gap S1. You can block the airflow that you want to try.

<Features>
The indoor unit 2 according to the present embodiment has the following characteristics.

(1)
In the indoor unit 2, a gap S1 is defined in the vicinity of the air outlet 56a by the plate-like portion 26 and the heat insulating material 27 that exist in the vicinity of the air outlet 56a. And the plate-shaped part 26 and the heat insulating material 27 have the ventilation resistance increase area | regions C1 and C2 which suppress the airflow formed by the driving | operation of the indoor unit 2 entering clearance C1. Ventilation resistance increase area | region C1, C2 has the uneven | corrugated shape which mutually fits. As a result, the room air containing moisture entrained in the airflow is suppressed from entering the gap S1, the growth of condensed water in the vicinity of the outlet 56a is suppressed, and the dripping is suppressed.

(2)
A water retaining groove T1 is formed in the ventilation resistance increasing region C2 of the plate-like portion 26. Therefore, even if indoor air containing moisture enters the gap S1 and condensation occurs in the gap S1, the condensed water is captured in the water retention groove T1. And the water surface of the dew condensation water caught by the water retention groove | channel T1 draws the outline which protruded rather than the opening surface of the water retention groove | channel T1 by the surface tension. As a result, when condensed water accumulates in the water retaining groove T1, the condensed water can block the airflow that is about to enter the gap S1, and thus the ventilation resistance of the gap S1 further increases.

<Modification>
As mentioned above, although one Embodiment of this invention was described based on drawing, a specific structure is not restricted to this Embodiment, It can change in the range which does not deviate from the summary of invention.

(A)
In the above embodiment, the indoor unit 2 is for wall hanging, but the present invention is also applicable to indoor units other than wall hanging.

(B)
In the above-described embodiment, the gap S1 defined by the plate-like portion 26 and the heat insulating material 27 is exemplified as the gap to be subjected to dew condensation countermeasures. However, the present invention is not limited to an arbitrary one defined near the outlet of the indoor unit. Applicable to gaps.

(C)
In the above-described embodiment, both the second surface 26b of the plate-like portion 26 and the third surface 27a of the heat insulating material 27 are uneven surfaces, but only one of them may be an uneven surface.

(D)
In the above-described embodiment, the ventilation resistance increasing regions C1 and C2 are formed in an uneven shape, and the water retention groove is provided in the ventilation resistance increasing region C1, but the ventilation resistance of the gap S1 may be increased by other methods.

(E)
In the said embodiment, the heat insulating material 27 does not need to be made from a polystyrene foam.

(F)
In the above embodiment, a water absorbing material such as a nonwoven fabric may be attached to the second surface 26b of the plate-like portion 26, the third surface 27a of the heat insulating material 27, or both. In this case, dripping of condensed water accumulated in the gap S1 is further suppressed.

(G)
Various technical features included in the modifications according to the above-described embodiments (A) to (F) can be arbitrarily combined.

  The present invention can be applied to an indoor unit of an air conditioner, and has an effect that it is possible to easily suppress the growth of condensed water in the vicinity of the outlet and to suppress the dripping.

The figure which shows the external appearance of an air conditioning apparatus provided with the indoor unit concerning 1st Embodiment of this invention. The figure which shows the schematic refrigerant circuit of an air conditioning apparatus. The side sectional view of an indoor unit. The enlarged view of the area | region B shown by FIG. The perspective view of the indoor unit of the state which removed components, such as a front panel and a filter. FIG. 6 is a perspective view of the indoor unit in a state where components such as an indoor fan and a heat insulating material are further removed from the state of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 2 Indoor unit 21 Indoor heat exchanger (heat exchanger)
23 Casing 24 Drain pan 26 Plate-shaped part (gap defining member)
26a First surface 26b Second surface 27 Heat insulating material (gap defining member)
27a Third surface 51 Front panel 57 Rear casing 52a, 53a Suction port 56a Air outlet C1, C2 Ventilation resistance increasing region S1 Clearance T1 Water retaining groove

Claims (11)

A casing (23) in which indoor air inlets (52a, 53a) and outlets (56a) are formed;
A gap defining member (26, 27) for defining a gap (S1) into which room air enters in the vicinity of the outlet (56a);
With
The gap defining members (26, 27) is
A first portion (26) having a first surface (26b) located in the vicinity of the outlet (56a) and defining at least a part of the contour of the gap (S1);
A second portion (27) having a second surface (27a) facing the first surface (26b) and defining at least a part of the contour of the gap (S1);
Including
At least one of the first surface (26b) and the second surface (27a ) is formed with a ventilation resistance increasing region (C1, C2) having an uneven shape that increases the ventilation resistance in the gap (S1). Being
Indoor unit (2) of air conditioner (1). A casing (23) in which indoor air inlets (52a, 53a) and outlets (56a) are formed;
  A gap defining member (26, 27) for defining a gap (S1) into which room air enters in the vicinity of the outlet (56a);
With
  The gap defining members (26, 27)
  A first portion (26) having a first surface (26b) located in the vicinity of the outlet (56a) and defining at least a part of the contour of the gap (S1);
  A second portion (27) having a second surface (27a) facing the first surface (26b) and defining at least a part of the contour of the gap (S1);
Including
  Ventilation resistance increasing regions (C1, C2) having shapes that fit each other are formed on both the first surface (26b) and the second surface (27a).
Indoor unit (2) of air conditioner (1). Unlike the first surface (26b), the first part (26) further includes a third surface (26a) that defines at least a part of the outline of the outlet (56a).
The indoor unit (2) of the air conditioning apparatus (1) according to claim 1 or 2.   The first part (26) is plate-shaped,
  The third surface (26a) is on the back side of the first surface (26b).
The indoor unit (2) of the air conditioning apparatus (1) according to claim 3.   The first part (26) and the second part (27) are separate members.
The indoor unit (2) of the air conditioning apparatus (1) according to any one of claims 1 to 4.   The second part (27) is a heat insulating material,
The indoor unit (2) of the air conditioning apparatus (1) according to claim 5.   The ventilation resistance increasing region (C1, C2) having the concavo-convex shape that increases the ventilation resistance in the gap (S1) is formed on both the first surface (26b) and the second surface (27a). Being
The indoor unit (2) of the air conditioning apparatus (1) according to claim 1.   The ventilation resistance increasing region (C1, C2) having the concavo-convex shape for fitting each other is formed on both the first surface (26b) and the second surface (27a).
The indoor unit (2) of the air conditioning apparatus (1) according to claim 7. A heat exchanger (21) disposed inside the casing (23) and exchanging heat with the air sucked into the casing (23) via the suction ports (52a, 53a);
A drain pan (24) in proximity to the heat exchanger (21) and receiving drain water generated in the heat exchanger (21);
Further comprising
The casing (23) has a front panel (51) in which the suction ports (52a, 53a) and the blowout port (56a) are formed, and a rear casing (57) attached to the wall surface,
The gap defining members (26, 27) are disposed between the drain pan (24) and the front panel (51).
The indoor unit (2) of the air conditioning apparatus (1) according to any one of claims 1 to 8 .   A casing (23) in which indoor air inlets (52a, 53a) and outlets (56a) are formed;
  A gap defining member (26, 27) for defining a gap (S1) into which room air enters in the vicinity of the outlet (56a);
With
  The gap defining members (26, 27)
  A third surface (26a) that defines at least part of the contour of the outlet (56a) and a first surface (26b) that is on the back side of the third surface (26a) and defines at least part of the contour of the gap (S1). ) Having a plate-like portion (26),
  A heat insulating material (27) having a second surface (27a) facing the first surface (26b) and defining at least a part of the contour of the gap (S1);
Including
  Ventilation resistance increasing region having an uneven shape that increases the ventilation resistance in the gap (S1) and fits both the first surface (26b) and the second surface (27a) ( C1, C2) are formed,
Indoor unit (2) of air conditioner (1).   A water retention groove (T1) is formed in at least one of the first surface (26b) and the second surface (27a).
The indoor unit (2) of the air conditioning apparatus (1) according to any one of claims 1 to 10.

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