JP2009198035A - Air conditioning unit and ventilation mechanism for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning unit and a ventilation mechanism for an air conditioner, suppressing drops of dew condensation water into a room by correctly guiding the dew condensation water to a draining mechanism. <P>SOLUTION: An indoor unit 2 of air conditioning equipment comprises a unit casing 10, a heat exchanger 30, a partitioning member 50 and a drain pan 40. The heat exchanger 30 is disposed in the unit casing 10. The partitioning member 50 is disposed near the heat exchanger 30, and partitions an upstream space S1 and a downstream space S2. The upstream space S1 is a space at the upstream side in the air flowing direction in the unit casing 10, with respect to the heat exchanger 30, and the downstream space S2 is a space at the downstream side in the air flowing direction in the unit casing 10, with respect to the heat exchanger 30. The drain pan 40 is disposed at a lower part of the heat exchanger 30 and the partitioning member 50. A downstream side face 50a opposed to the downstream space, of the partitioning member 50 is provided with a groove 80 for guiding the dew condensation water to the drain pan 40. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioning unit and a ventilation mechanism of an air conditioner.

Condensation may occur in the ventilation path of the air conditioner. For example, in the vicinity of the heat exchanger of the air conditioning unit as shown in Patent Document 1, dew condensation may occur due to cold heat from the heat exchanger.
JP 2006-125828 A

  And about condensed water, in order to suppress dripping to a room | chamber interior, it is necessary to guide condensed water to a drainage mechanism correctly.

  An object of the present invention is to provide an air-conditioning unit and an air-conditioning mechanism for an air conditioner that can suppress dripping of condensed water into a room by correctly guiding the condensed water to a drainage mechanism.

  The air conditioning unit according to the first aspect of the present invention includes a casing, a ventilation path defining member, and a drainage mechanism. The ventilation path defining member is a member that defines the ventilation path in the casing. The drainage mechanism is a mechanism that guides condensed water to the outside of the casing. A groove that guides condensed water to the drainage mechanism is formed on the side surface of the ventilation path that faces the ventilation path of the ventilation path defining member.

  In this air conditioning unit, the condensed water adhering to the side surface of the ventilation path side of the ventilation path defining member is caught by the groove formed on the side surface, and is correctly guided along the groove to the drainage mechanism. Thereby, dripping of the dew condensation water into the room can be suppressed.

  The air conditioning unit according to a second aspect of the present invention is the air conditioning unit according to the first aspect of the present invention, wherein the groove is formed at a position on the side surface of the ventilation path facing a place where the airflow in the casing is relatively low. Note that “relatively” means “relatively” based on the entire ventilation path in the casing.

  When the airflow in contact with the side surface of the ventilation path becomes faster, the condensed water that has entered the groove on the side surface may jump out of the groove, and it may be difficult to guide the condensed water along the groove to the drainage mechanism. In the air conditioning unit according to the second aspect of the invention, the groove is formed at a position facing the place where the air flows relatively gently in the ventilation path, so that the dew condensation water is more reliably guided to the drainage mechanism.

  The air conditioning unit according to the third invention is the air conditioning unit according to the first invention or the second invention, and further includes a heat exchanger. The heat exchanger is disposed in the casing. The ventilation path defining member is a partition member that is disposed in the vicinity of the heat exchanger and divides the upstream space and the downstream space. The upstream space is a space upstream of the heat exchanger in the airflow direction in the casing, and the downstream space is a space downstream of the heat exchanger in the airflow direction in the casing. The drainage mechanism is a drain pan disposed below the heat exchanger and the ventilation path defining member.

  In this air conditioning unit, condensed water adhering to the side surface of the partition member in the vicinity of the heat exchanger that faces the downstream space is caught in the groove formed on the side surface, and is correctly guided to the drain pan along the groove. It is burned. Thereby, dripping of the dew condensation water into the room can be suppressed.

  An air conditioning unit according to a fourth invention is the air conditioning unit according to either the first invention or the third invention, wherein the groove includes a first groove extending substantially in the vertical direction and a second groove intersecting the first groove. Including.

  In this air conditioning unit, a groove formed on the side surface of the ventilation path side of the ventilation path defining member is branched. Thereby, dew condensation water becomes easy to be caught by a ditch.

  The air conditioning unit according to a fifth aspect of the present invention is the air conditioning unit according to the fourth aspect of the present invention, wherein the second groove is downstream of the first groove in the air flow direction in the casing and is inclined downward toward the first groove. ing.

  In this air conditioning unit, the second groove on the downstream side of the airflow is inclined downward toward the first groove on the upstream side of the airflow. Therefore, the condensed water caught in the second groove is carried to the first groove by gravity against the air flow toward the outlet, and is guided to the drainage mechanism. Thereby, dripping to the room | chamber interior via the blower outlet of condensed water is further suppressed.

  An air conditioning unit according to a sixth aspect of the present invention is the air conditioning unit according to the fifth aspect of the present invention, wherein the second groove is formed near the upper end of the side surface of the ventilation path and near the end on the downstream side in the airflow direction in the casing. Has been.

  Condensed water adhering to the vicinity of the second groove at such a position is more likely to reach the air outlet by riding on the air current when there is no second groove than condensed water adhering to other positions. In the air conditioning unit according to the sixth aspect of the invention, the presence of the second groove allows the condensed water to be more reliably guided to the drainage mechanism.

  An air conditioning unit according to a seventh aspect of the present invention is the air conditioning unit according to any of the first to sixth aspects of the present invention, wherein the groove has an introduction part near the entrance and a water retention part near the bottom. . The width of the water retention part is narrower than the width of the introduction part.

  In this air conditioning unit, the width near the bottom of the groove is narrower than the width near the entrance, and as a result, condensed water is retained near the bottom due to capillary action. As a result, the dew condensation water that has entered the groove is not easily blown out of the groove on the airflow in the casing, and is easily guided to the drainage mechanism along the groove.

  An air conditioning unit according to an eighth aspect of the present invention is the air conditioning unit according to the seventh aspect of the present invention, wherein the first side wall of the groove is closer to the second side wall of the groove facing the first side wall than the vicinity of the bottom of the groove. It is more inclined in the vicinity.

  In this air conditioning unit, as the first side wall of the groove approaches the bottom (ie, becomes gentler as it approaches the entrance), a capillary phenomenon is more likely to occur. As a result, the dew condensation water that has entered the groove rides on the airflow in the casing and is less likely to fly out of the groove, and is more easily guided to the drainage mechanism along the groove.

  An air conditioning unit according to a ninth aspect is the air conditioning unit according to any one of the first to seventh aspects, wherein the first side wall of the groove is upstream of the second side wall of the groove in the airflow direction in the casing. is there. The second side wall is inclined with respect to the side surface of the ventilation path than the first side wall.

  In this air conditioning unit, of the double walls of the groove, the side wall on the downstream side (second side wall) in the airflow direction is more sharp than the side wall on the upstream side (first side wall). Thereby, the dew condensation water is easy to enter the groove and is difficult to come out of the groove.

  An air conditioning unit according to a tenth aspect of the present invention is the air conditioning unit according to the third aspect of the present invention, wherein the heat exchanger is disposed inclined with respect to the vertical direction. The ventilation path defining member is disposed below the heat exchanger.

  In this air conditioning unit, the condensed water adhering to the partition member located below the heat exchanger is correctly guided to the drain pan.

  An air conditioning unit according to an eleventh aspect of the present invention is the air conditioning unit according to the tenth aspect of the present invention, wherein the ventilation path defining member has a substantially triangular shape.

  In this air conditioning unit, the condensed water adhering to the substantially triangular partition member positioned below the heat exchanger is correctly guided to the drain pan.

  The ventilation mechanism of the air conditioner pertaining to the twelfth aspect of the invention comprises a ventilation path defining member and a drainage mechanism. The ventilation path defining member defines a ventilation path of air to be air-conditioned or air-conditioned. The drainage mechanism is a mechanism for draining condensed water in the ventilation path. A groove that guides condensed water to the drainage mechanism is formed on the side surface of the ventilation path that faces the ventilation path of the ventilation path defining member.

  In this ventilation mechanism, the condensed water adhering to the side surface of the ventilation path side of the ventilation path defining member is caught by a groove formed on the side surface, and is correctly guided along the groove to the drainage mechanism. Thereby, dripping of the dew condensation water into the room can be suppressed.

  The ventilation mechanism of the air conditioner according to the thirteenth aspect of the present invention is the ventilation mechanism according to the twelfth aspect of the present invention, and is formed at a position on the side surface of the ventilation path facing a place where the airflow in the casing is relatively low. Note that “relatively” means “relatively” based on the entire ventilation path in the casing.

  When the airflow in contact with the side surface of the ventilation path becomes faster, the condensed water that has entered the groove on the side surface may jump out of the groove, and it may be difficult to guide the condensed water along the groove to the drainage mechanism. In the ventilation mechanism according to the thirteenth aspect, the groove is formed at a position facing the place where the air flows relatively gently in the ventilation path, so that the condensed water is more reliably guided to the drainage mechanism.

  The ventilation mechanism of the air conditioner according to the fourteenth aspect of the present invention is the ventilation mechanism according to the twelfth aspect of the present invention or the thirteenth aspect of the present invention, further comprising a casing. The ventilation path defining member is a heat insulating material disposed in the casing.

  In this ventilation mechanism, the dew condensation water in the casing can be appropriately discharged by a groove formed in the heat insulating material in the casing.

  In the air conditioning unit according to the first aspect, the condensed water adhering to the side surface of the ventilation path side of the ventilation path defining member is caught in the groove formed on the side surface and is correctly guided along the groove to the drainage mechanism. Thereby, dripping of the dew condensation water into the room can be suppressed.

  In the air conditioning unit according to the second aspect of the invention, the groove is formed at a position facing the place where the air flows relatively gently in the ventilation path, so that the dew condensation water is more reliably guided to the drainage mechanism.

  In the air conditioning unit according to the third aspect of the invention, the dew condensation adhering to the side surface of the partition member near the heat exchanger that faces the downstream space is caught in the groove formed on the side surface, and along the groove. It is correctly guided to the drain pan. Thereby, dripping of the dew condensation water into the room can be suppressed.

  In the air conditioning unit according to the fourth aspect of the invention, the dew condensation water is easily caught in the groove.

  In the air conditioning unit according to the fifth aspect of the invention, the dew condensation water is easily caught in the groove.

  In the air conditioning unit according to the fifth aspect of the invention, dripping of the condensed water into the room through the outlet is further suppressed.

  In the air conditioning unit according to the sixth aspect of the invention, the condensed water is more reliably guided to the drainage mechanism.

  In the air conditioning unit according to the seventh aspect of the invention, the dew condensation water that has entered the groove is not easily blown out of the groove on the airflow in the casing, and is easily guided to the drainage mechanism along the groove.

  In the air conditioning unit according to the eighth aspect of the invention, the dew condensation water that has entered the groove rides on the airflow in the casing and is less likely to fly out of the groove, and is more easily guided to the drainage mechanism along the groove.

  In the air conditioning unit according to the ninth aspect of the invention, the dew condensation water easily enters the groove and is difficult to exit from the groove.

  In the air conditioning unit according to the tenth aspect of the invention, the condensed water adhering to the partition member located below the heat exchanger is correctly guided to the drain pan.

  In the air conditioning unit according to the eleventh aspect of the invention, the condensed water adhering to the substantially triangular partition member located below the heat exchanger is correctly guided to the drain pan.

  In the ventilation mechanism of the air conditioner according to the twelfth aspect of the invention, the dew condensation adhering to the side surface of the ventilation path side of the ventilation path defining member is caught in the groove formed on the side surface, and is correctly guided to the drainage mechanism along the groove. It is burned. Thereby, dripping of the dew condensation water into the room can be suppressed.

  In the ventilation mechanism of the air conditioner according to the thirteenth aspect, the groove is formed at a position facing the place where the air flows relatively gently in the ventilation path, so that the dew condensation water is more reliably guided to the drainage mechanism.

  In the ventilation mechanism of the air conditioner according to the fourteenth aspect of the invention, the dew condensation water in the casing can be appropriately discharged by the groove formed in the heat insulating material in the casing.

  Hereinafter, an indoor unit (air conditioning unit) 2 included in an air conditioning facility according to an embodiment of the present invention will be described with reference to the drawings.

(1) Basic Structure of Indoor Unit FIG. 1 is a side view of the indoor unit 2 (showing a cross section of the scroll casing 22 b), and FIG. 2 is a plan cross-sectional view of the indoor unit 2.

  The indoor unit 2 is installed suspended from the ceiling of the room serving as an air-conditioning target space, and is connected to an outdoor unit (not shown) installed outside via a refrigerant communication pipe (not shown).

  The indoor unit 2 mainly includes a unit casing 10, a centrifugal blower 20, a heat exchanger 30, a drain pan 40, and a partition member 50 (see FIG. 3) housed in the unit casing 10.

<Unit casing>
The unit casing 10 is a substantially rectangular parallelepiped box, and mainly includes a top plate 11, a front plate 12, a right side plate 13, a left side plate 14, a bottom plate 15, and a back plate 16. In the description of the present embodiment, “left” refers to the direction from the right side plate 13 toward the left side plate 14, and “right” refers to the opposite direction. The top plate 11, the front plate 12, the right side plate 13, the left side plate 14, the bottom plate 15, and the back plate 16 are metal plate-like members that have been subjected to sheet metal processing.

  An opening is formed in a portion of the bottom plate 15 near the back plate 16 (including a case where an opening is formed from the back plate 16), and the opening sucks indoor air into the unit casing 10. Unit inlet 2a. The front plate 12 is formed with a plurality of slits extending substantially in parallel in the left-right direction, and the plurality of slits blows air cooled or heated by the heat exchanger 30 from the unit casing 10 into the room. Unit air outlet 2b. The openings serving as the unit inlet 2a and the unit outlet 2b extend substantially the same as the width of the unit casing 10 in the left-right direction. The top plate 11 faces the indoor ceiling surface in a state where the indoor unit 2 is suspended from the indoor ceiling.

  A partition member 17 is provided in the unit casing 10. The partition member 17 is a metal plate-like member that is processed by sheet metal and is substantially parallel to the front plate 12 and the back plate 16 of the unit casing 10 (that is, substantially orthogonal to the left and right side plates 13 and 14 of the unit casing 10). It is a member that divides the internal space of the unit casing 10 into approximately two equal parts into a front space (hereinafter referred to as a heat exchanger chamber) and a back space (hereinafter referred to as a blower chamber). The unit inlet 2a is formed at a position on the back surface side of the bottom plate 15 with respect to the partition member 17, and serves as a hole for communicating the blower chamber and the indoor space.

  The partition member 17 is formed with two communication openings 17a and 17b that allow the blower chamber and the heat exchanger chamber to communicate with each other. The two communication openings 17a and 17b are the horizontally long rectangular holes that are the same as each other, and are arranged substantially in parallel in the left-right direction. The two communication openings 17a and 17b correspond to scroll outlets 25a and 25b of two scroll casings 22a and 22b described later, respectively.

<Centrifuge blower>
The centrifugal blower 20 is generally disposed in the blower chamber, and a device that generates an air flow in the unit casing 10, that is, indoor air is sucked into the unit casing 10 through the unit suction port 2 a and cooled in the unit casing 10. Or it is an apparatus for blowing out the heated air indoors through the unit blower outlet 2b. The centrifugal blower 20 mainly includes two impellers 21a and 21b, two scroll casings 22a and 22b that accommodate the two impellers 21a and 21b, and a motor 23 that rotationally drives the two impellers 21a and 21b. And have.

  The impellers 21a and 21b are both-suction type sirocco fan rotors, and are arranged side by side so that the rotation axis O is substantially parallel to the left-right direction.

  The scroll casings 22a and 22b are resin members. Two scroll inlets 24a and 24b and one scroll outlet 25a and 25b are formed in each of the scroll casings 22a and 22b. The scroll inlets 24a and 24b are surrounded by bell mouths attached to the left and right sides of the scroll casings 22a and 22b, respectively, and open toward the left and right direction (that is, the direction of the rotation axis O of the impellers 21a and 21b). Yes. The scroll outlets 25a and 25b are defined by scroll outlets 27a and 27b, respectively. The scroll outlet portions 27a and 27b are portions of the scroll casings 22a and 22b that are close to the partition member 17, and their tip portions are inserted into the communication openings 17a and 17b formed in the partition member 17, and project into the heat exchanger chamber. ing. The scroll outlet portions 27 a and 27 b are substantially orthogonal to the partition member 17 in a plan view of the unit casing 10.

  In addition, although there are two impellers and two scroll casings in this embodiment, one or three or more may be provided in other embodiments. In addition, the impeller and the scroll casing are a double suction type in this embodiment, but may be a single suction type in other embodiments.

  The motor 23 is disposed between the scroll casings 22a and 22b in a plan view of the unit casing 10, and is fixed to the partition member 17 and the unit casing 10 via a support member. The two impellers 21a and 21b are all connected to one motor 23, and are rotationally driven collectively.

  When the centrifugal blower 20 is operated, that is, when the impellers 21a and 21b are rotated by driving the motor 23, air is sucked into the blower chamber from the room through the unit suction port 2a. The air sucked into the blower chamber is sucked into the scroll casings 22a and 22b through the scroll suction ports 24a and 24b and reaches the impellers 21a and 21b. Thereafter, the air pressurized by the impellers 21 a and 21 b is blown out into the heat exchanger chamber through the communication openings 17 a and 17 b of the partition member 17.

<Heat exchanger>
The heat exchanger 30 is disposed in the heat exchanger chamber and is a device for cooling or heating the air flowing into the heat exchanger chamber as the centrifugal blower 20 operates. The heat exchanger 30 extends substantially in parallel in the left-right direction, and its right end is slightly spaced from the right side plate 13 of the unit casing, and its left end is in contact with the left side plate 14 of the unit casing. There is a little space in between. The heat exchanger 30 is inclined at an angle of approximately 45 ° with respect to the bottom plate 15 (that is, at an angle of approximately 45 ° in the vertical direction) and is inclined toward the front plate 12 in a side view. Yes.

  The heat exchanger 30 is a cross fin tube type heat exchanger, and mainly includes a plurality of stages of heat transfer tubes 30a extending in the left-right direction, a plurality of plate-shaped heat radiation fins 30b substantially orthogonal to the heat transfer tubes 30a, and heat transfer. It is comprised from the plate-shaped right side tube plate 31 and the left side tube plate 32 which are substantially orthogonal to the heat tube 30a (refer FIG.3, FIG.4 and FIG.5). The heat radiating fins 30b are penetrated by a plurality of stages of heat transfer tubes 30a. Similarly, the tube plates 31 and 32 are penetrated by the heat transfer tubes 30a in a plurality of stages. By inserting the heat transfer tubes 30a into the plurality of circular holes formed in the tube plates 31 and 32, the right tube plate 31 plays a role of fixing the heat transfer tubes 30a in a plurality of stages near the right end portion thereof. The left tube sheet 32 plays a role of fixing the heat transfer tubes 30a in a plurality of stages near the left end portion thereof.

  The right tube sheet 31 is mainly composed of a long and substantially rectangular bottom surface portion 31a, a long and substantially rectangular front side wall portion 31b, and a long and substantially rectangular back side wall portion 31c. A rectangular sheet metal is molded by bending approximately 90 ° in the same direction at portions near both ends extending in the vertical direction (portions to be the front side wall portion 31b and the back side wall portion 31c) (see FIG. 5). . Therefore, the front side wall portion 31b and the back side wall portion 31c are respectively continuous with the front side edge and the back side edge of the bottom surface portion 31a, are substantially orthogonal to the bottom surface portion 31a, and face each other.

  A fixing member 61 for fixing the heat exchanger 30 to the top plate 11 of the unit casing 10 is attached near the upper portion of the front side wall portion 31b of the right tube plate 31 (see FIG. 6). The fixing member 61 is a member that is formed by bending a metal elongated sheet metal at two locations, and includes an upper portion 61a that contacts the top plate 11, a middle portion 61b that extends substantially parallel to the vertical direction, and a front side wall of the right tube plate 31. The lower portion 61c is in contact with the vicinity of the upper portion of the portion 31b. The upper part 61 a is spot welded to the top plate 11. The middle part 61b is substantially orthogonal to the upper part 61a. The lower part 61c makes an angle of approximately 45 ° with respect to the middle part 61b, and is screwed in the vicinity of the upper part of the front side wall part 31b of the right tube sheet 31. As a result, a part of the load of the heat exchanger 30 is supported by the top plate 11 through the metal strong fixing member 61. On the other hand, since the fixing member 61 is made of metal, cold heat generated in the heat exchanger 30 during cooling operation is transmitted to the top plate 11 through the fixing member 61. However, the top plate 11 is affected by the cooling heat. The water condensed above falls down and is received by the drain pan 40.

  Moreover, the fixing member 62 for fixing the heat exchanger 30 to the partition member 17 is attached to the lower part vicinity of the back side wall part 31c of the right side tube sheet 31 (refer FIG. 6). The fixing member 62 is a member formed by bending a metal elongated sheet metal at two locations, and includes an upper portion 62a that contacts the partition member 17, a middle portion 62b that extends obliquely with respect to the vertical direction, and a rear side of the right tube plate 31. A lower portion 62c is provided in contact with the vicinity of the lower portion of the side wall portion 31c. The upper part 62 a is spot welded to the partition member 17. The lower part 62c is screwed in the vicinity of the lower part of the rear side wall part 31c of the right tube sheet 31. As a result, a part of the load of the heat exchanger 30 is supported by the partition member 17 via the strong metal fixing member 62.

  Similarly, the left tube sheet 32 is mainly composed of an elongated substantially rectangular bottom surface portion 32a, an elongated substantially rectangular front side wall portion 32b, and an elongated substantially rectangular rear side wall portion 32c. A vertically long, substantially rectangular sheet metal is molded by bending approximately 90 ° in the same direction on the portions in the vicinity of both ends extending in the vertical direction (portions to be the front side wall portion 32b and the back side wall portion 32c) (see FIG. 5). Accordingly, the front side wall portion 32b and the back side wall portion 32c are respectively continuous with the front side edge and the back side edge of the bottom surface portion 32a, are substantially orthogonal to the bottom surface portion 32a, and face each other.

  A support plate 33 for fixing the heat exchanger 30 to the left side plate 14 of the unit casing 10 is attached to the front side wall portion 32 b of the left tube sheet 32. The support plate 33 is mainly composed of a substantially rectangular bottom surface portion 33a and an elongated, substantially rectangular left side wall portion 33b, and a portion of the substantially rectangular sheet metal near one end (left side wall portion). The portion 33b) is formed by bending approximately 90 ° (see FIG. 5). Therefore, the left side wall portion 33b is continuous with the left side edge of the bottom surface portion 33a, is substantially orthogonal to the bottom surface portion 33a, and has a substantially L-shaped cross-sectional shape.

  A portion near the right side edge of the bottom surface portion 33 a of the support plate 33 abuts on the front side wall portion 32 b of the left tube plate 32. A plurality of screws 35 are driven in the vertical direction at appropriate intervals so as to penetrate both the bottom surface portion 33a and the front side wall portion 32b while being orthogonal to the contact surface. Further, the left side wall 33 b of the support plate 33 abuts on the left side plate 14 of the unit casing 10. A plurality of screws are driven in the vertical direction at appropriate intervals so as to penetrate both the left side wall 33b and the left side plate 14 while being orthogonal to the contact surface. In this way, the left tube plate 32 of the heat exchanger 30 is fixed to the left side plate 14 of the unit casing 10 via the support plate 33, so that a part of the load of the inclined heat exchanger 30 is unit casing. 10 left side plates 14 are supported.

  By the way, as described above, when the centrifugal blower 20 operates, an air flow is generated in the unit casing 10, and air flows into the heat exchanger chamber through the communication openings 17 a and 17 b of the partition member 17. The air flowing into the heat exchanger chamber exchanges heat with the refrigerant flowing through the heat transfer tube 30a while passing through the heat exchanger 30 from the back side to the front side. Thereafter, the cooled or heated air rides on the airflow and flows out from the heat exchanger room into the room through the unit outlet 2b of the front plate 12 of the unit casing 10.

<Drain pan>
A drain pan 40 is disposed above the bottom plate 15 of the unit casing 10 and below the inclined heat exchanger 30. The drain pan 40 is a tray for receiving condensed water generated in the heat exchanger 30 and a partition member 50 described later and guiding it to a predetermined drainage channel (not shown).

  The drain pan 40 is made of styrene foam. Therefore, during the cooling operation, the cold heat from the heat exchanger 30 is hardly transmitted to the surroundings (particularly, the bottom plate 15) through the drain pan 40.

  A groove 41 extending in a direction from the front side to the back side is formed in a portion on the right side of the drain pan 40 (see FIG. 7). The groove 41 extends to a position substantially overlapping the front side wall portion 31b of the right tube plate 31 of the heat exchanger 30 in plan view. The groove 41 plays a role of fixing a partition member 50 described later.

<Partition member>
A partition member 50 is disposed below the inclined heat exchanger 30 and above the groove 41 formed in the drain pan 40 (see FIG. 7). Note that the heat exchanger 30 is firmly fixed to the unit casing 10 and the partition member 17 by the fixing members 61 and 62 and the support plate 33 so that the load is supported. The load of the heat exchanger 30 is not applied.

  The partition member 50 is a member for partitioning the upstream space S <b> 1 and the downstream space S <b> 2, and defines a ventilation path for airflow generated in the unit casing 10. The upstream space S1 is a space upstream of the heat exchanger 30 along the airflow generated in the unit casing 10, and the downstream space S2 is heat generated along the airflow generated in the unit casing 10. It is a space on the downstream side of the exchanger 30. By partitioning the upstream space S1 and the downstream space S2 in this way, the air before being cooled or heated by the heat exchanger 30 is suppressed from reaching the unit outlet 2b, and in principle the heat exchanger 30. Only the air after being cooled or heated in this way reaches the unit outlet 2b.

  The partition member 50 is made of polystyrene foam. As a result, the cooling heat from the heat exchanger 30 is hardly transmitted to the surroundings (particularly to the front plate 12) through the partition member 50 during the cooling operation.

  The partition member 50 has a substantially triangular shape in the left side view and the right side view so that the partition member 50 is in contact with the inclined heat exchanger 30 and fits under the heat exchanger 30. More specifically, the partition member 50 includes a slope portion 51 on the heat exchanger 30 side, a lower portion 52 on the drain pan 40 side, and a front portion 53 on the front plate 12 side (see FIG. 6).

a) Slope portion on heat exchanger side Slope portion 51 on the heat exchanger 30 side of the partition member 50 is a fixing member 63 attached near the lower portion of the front side wall portion 31b of the right tube plate 31 of the heat exchanger 30. (See FIG. 6). The fixing member 63 is mainly composed of an elongated substantially rectangular bottom surface portion 63a, an elongated substantially rectangular shape right side wall portion 63b, and an elongated substantially rectangular shape left side wall portion 63c. The portions near the both ends extending in the vertical direction (the portions to be the right side wall portion 63b and the left side wall portion 63c) are bent by approximately 90 ° in the same direction (see FIG. 5). The bottom surface portion 63a contacts the front side wall portion 31b of the right tube sheet 31, and extends substantially parallel to the front side wall portion 31b.

  The width of the bottom surface portion 63 a in the left-right direction is substantially the same as the width of the slope portion 51 in the left-right direction, and the slope portion 51 is fitted into the fixing member 63. In other words, the fixing member 63 is a member for sandwiching a part of the slope portion 51 of the partition member 50. As a result, the partition member 50 is pressed in the left direction by the right side wall portion 63b of the fixing member 63, and is pressed in the right direction by the left side wall portion 63c of the fixing member 63 and fixed in the left and right direction.

  The slope portion 51 of the partition member 50 extends along the front side wall portion 31 b of the right tube plate 31 of the heat exchanger 30 and is disposed below the fixing members 61 and 63.

b) Drain pan-side lower part The width of the lower part 52 of the partition member 50 on the drain pan 40 side in the left-right direction is substantially the same as the width in the left-right direction of the groove 41 formed in the drain pan 40 (see FIG. 7). Further, the lower part 52 has substantially the same length as the groove 41 in the direction from the front side to the rear side, and the lower part 52 is fitted into the groove 41. As a result, the partition member 50 is pressed by the side wall of the groove 41 and fixed in the left-right direction.

c) Front part on the front plate side The front part 53 on the front plate 12 side of the partition member 50 has an uneven shape. More specifically, the front part 53 has peak parts A1 to A3 and valley parts B1 to B3 (see FIG. 8). The peaks A1 to A3 are formed on the left side of the valleys B1 to B3, respectively.

  On the other hand, in the position of the front plate 12 of the unit casing 10 facing the mountain parts A1 to A3 and the valley parts B1 to B3, fitting members 70 and 71 that fit the mountain parts A1 to A3 and the valley parts B1 to B3 are provided. It is attached. The fitting members 70 and 71 are made of foamed polystyrene in the present embodiment, but may be members of other materials in other embodiments.

  The upper fitting member 70 has a valley portion C1 and a mountain portion D1 that fit into the mountain portion A1 and the valley portion B1 (see FIG. 9). Note that the valley C1 is formed on the left side of the peak D1. The crest A1 of the partition member 50 is in contact with the trough C1 of the fitting member 70, and the trough B1 of the partition member 50 is in contact with the crest D1 of the fitting member 70.

  Similarly, the lower fitting member 71 has valleys C2, C3 and peaks D2, D3 that fit into the peaks A2, A3 and valleys B2, B3 (see FIG. 9). The valley portions C2 and C3 are formed on the left side of the mountain portions D2 and D3, respectively. The peaks A2 and A3 of the partition member 50 are in contact with the valleys C2 and C3 of the fitting member 71, respectively, and the valleys B2 and B3 of the partition member 50 are in contact with the peaks D2 and D3 of the fitting member 71, respectively. To do.

  In this way, the crests A1 to A3 and the troughs B1 to B3 arranged in the left-right direction of the partition member 50 and the troughs C1 to C3 and the crests D1 to D3 arranged in the left-right direction of the fitting members 70 and 71 are mutually connected. By fitting, the partition member 50 is difficult to shift in the left-right direction.

  Further, between the valley portions B1 and B2 of the partition member 50, a peak portion A4 protruding to the front side from the valley portions B1 and B2 is formed (see FIG. 8), and an upper fitting member 70 and a lower portion are formed. With the fitting member 71, it becomes an aspect which pinches | interposes peak part A4. Thereby, the partition member 50 is difficult to shift not only in the horizontal direction but also in the vertical direction.

d) Groove On the downstream side surface 50 a facing the downstream space S <b> 2 of the partition member 50, a groove 80 that guides condensed water generated in the downstream space S <b> 2 to the drain pan 40 by the cold heat from the heat exchanger 30 during the cooling operation. Is formed. The groove 80 includes four first grooves 81a to 81d extending substantially in the vertical direction, and two second grooves 82a and 82b extending substantially from the front side toward the back side (see FIG. 6). ).

  The four first grooves 81a to 81d extend substantially in parallel with each other at substantially equal intervals from the front side to the back side in this order. However, the frontmost first groove 81a bends to the back side in the vicinity of the downstream side, proceeds obliquely downward, and secondly joins the front side first groove 81b in the vicinity of the downstream side.

  On the other hand, the two second grooves 82a and 82b intersect the two first grooves 81a and 81b on the front side. More specifically, the two second grooves 82a and 82b extend obliquely downward from the most front-side first groove 81a to the front-side first groove 81b, substantially parallel to each other. . Therefore, the dew condensation water that has entered the second grooves 82a and 82b flows to the first groove 81b on the front side second along the second grooves 82a and 82b due to gravity, and then the first groove It flows to the lower drain pan 40 along 81b.

  The second grooves 82a and 82b are present on the downstream side along the airflow generated in the unit casing 10 with respect to the second groove 81b on the second front side. That is, the second grooves 82a and 82b play a role of transporting condensed water, which is riding on the airflow and going to the unit outlet 2b of the front plate 12 of the unit casing 10 to the upstream side against the airflow. Thereby, it is suppressed that dew condensation water dripped in a room | chamber interior via the unit blower outlet 2b.

  Further, the second grooves 82 a and 82 b are formed near the upper end of the downstream side surface 50 a of the partition member 50, that is, at a position that requires a relatively long time for the condensed water generated there to reach the drain pan 40. The second grooves 82 a and 82 b are formed on the downstream side surface 50 a of the partition member 50 in the vicinity of the downstream end in the airflow direction, that is, at a position relatively close to the front plate 12 of the unit casing 10. .

  When there is no second groove 82a, 82b, the condensed water adhering to this position on the downstream side surface 50a of the partition member 50 rides on the airflow rather than the condensed water adhering to other positions, and the unit outlet 2b. Easy to reach. In the present embodiment, the second grooves 82a and 82b are formed at such positions, so that the condensed water at these positions is more reliably guided to the drain pan 40.

  Subsequently, the shapes of the grooves 81a to 81d, 82a, and 82b will be described. In the following description, the first grooves 81a to 81d are referred to as the first grooves 81, and the second grooves 82a and 82b are referred to as the second grooves 82.

  As shown in FIG. 10, the first groove 81 has an introduction part 81S near the entrance and a water retention part 81T near the bottom, and the width of the water retention part 81T is larger than the width of the introduction part 81S. It is narrower. Therefore, the dew condensation water once caught in the first groove 81 enters the deeper water retention part 81T by the capillary phenomenon, and is guided to the drain pan 40 without jumping out of the first groove 81.

  The second side wall 81Q of the first groove 81 is substantially orthogonal to the downstream side surface 50a of the partition member 50, and the first side wall 81P of the first groove 81 is approximately 45 to the downstream side surface 50a of the partition member 50. ° Inclined. That is, the second side wall 81Q is inclined with respect to the downstream side surface 50a of the partition member 50 relative to the first side wall 81P. The first side wall 81P is located upstream of the second side wall 81Q along the air flow generated in the unit casing 10. In other words, the second side wall 81Q on the downstream side in the airflow direction is more prominent than the first side wall 81P on the upstream side in the airflow direction, and the first side wall 81P on the upstream side in the airflow direction is further downstream in the airflow direction. It is inclined more gently than the second side wall 81Q. Thereby, the dew condensation water pushed by the airflow on the downstream side surface 50a of the partition member 50 is easy to enter the first groove 81 and is difficult to come out.

  Similarly, as shown in FIG. 11, the second groove 82 has an introduction portion 82S near its entrance and a water retention portion 82T near its bottom, and the width of the water retention portion 82T is equal to that of the introduction portion 82S. It is narrower than the width. More specifically, the first side wall 82P of the second groove 82 is more inclined near the entrance than the bottom near the second side wall 82Q of the second groove 82. Therefore, once the dew condensation water caught in the second groove 82 enters the deeper water retention portion 82T by capillary action, and does not jump out of the second groove 82, it extends to the first groove 81 along the second groove 82, and The drain pan 40 is guided. The first side wall 82P is positioned upstream of the second side wall 82Q along the air flow generated in the unit casing 10.

  The second side wall 82Q is substantially orthogonal to the downstream side surface 50a of the partition member 50, and the first side wall 82P is inclined approximately 35 ° near the entrance to the downstream side surface 50a of the partition member 50, It is tilted approximately 45 ° near the bottom. That is, the second side wall 82Q is inclined with respect to the downstream side surface 50a of the partition member 50 relative to the first side wall 82P. In other words, the second side wall 82Q on the downstream side in the airflow direction is more upright than the first side wall 82P on the upstream side in the airflow direction, and the first side wall 82P on the upstream side in the airflow direction is further downstream in the airflow direction. It is inclined more gently than the second side wall 82Q. Thereby, the dew condensation water pushed by the airflow on the downstream side surface 50a of the partition member 50 easily enters the second groove 82P and is difficult to come out.

<Features>
(1)
In the indoor unit 2, the condensed water adhering to the downstream side surface 50 a of the partition member 50 in the vicinity of the heat exchanger 30 is caught by the groove 80 formed in the downstream side surface 50 a, and along the groove 80. The drain pan 40 is correctly guided. Thereby, dripping of the condensed water into the room is suppressed.

(2)
Further, in the indoor unit 2, the width of the water retaining portions 81T and 82T of the grooves 81 and 82 is narrower than the width of the introducing portions 81S and 82S, and as a result, near the bottom of the grooves 81 and 82 due to capillary action. Condensed water is easily retained. As a result, the dew condensation water that has entered the grooves 81 and 82 is not easily blown out of the grooves 81 and 82 by riding on the airflow in the unit casing 10, and is easily guided to the drain pan 40 along the grooves 81 and 82. .

  In particular, in the case of the second groove 82, the first side wall 82P is more prominent in the vicinity of the water retention part 82T than in the vicinity of the introduction part 82S, and the capillary phenomenon is more likely to occur.

(3)
Further, in the indoor unit 2, the second side walls 81Q and 82Q on the downstream side in the airflow direction of the grooves 81 and 82 stand out from the first side walls 81P and 82P on the upstream side in the airflow direction of the grooves 81 and 82, respectively. ing. As a result, the dew condensation water easily enters the grooves 81 and 82 and does not easily exit the grooves 81 and 82.

(4)
In the indoor unit 2, since the partition member 50 is made of polystyrene foam, the grooves 80 and 81 can be easily processed on the upstream side surface 50 a.

(5)
In the indoor unit 2, the second groove 82 is located on the downstream side surface 50 a of the partition member 50 at a position facing condensate water and a location where the airflow generated in the unit casing 10 is relatively low speed. Is formed. As a result, the condensed water that has entered the second groove 82 is less likely to jump out of the second groove 82, and is correctly guided to the drain pan 40.

<Modification 1>
In the above embodiment, the cross-sectional shape of the first groove 81 may be adopted for the second groove 82, or the cross-sectional shape of the second groove 82 may be adopted for the first groove 81.

<Modification 2>
The aspects of the first groove 81 and the second groove 82 are not limited to those described above. For example, the cross-sectional shape of at least one of the grooves 81 and 82 may be as shown in FIG. 12 (a) or FIG. 12 (b).

  In the example of FIG. 12A, the grooves 81 and 82 are branched in the depth direction (that is, branched in the cross-sectional shape), and the width of the groove after branching from the entrance is the same as before branching. The width of the groove is narrower. Even in such a case, the dew condensation water is held in the grooves 81 and 82 by the capillary phenomenon.

  In the example of FIG. 12B, the downstream side surface 50a of the partition member 50 is stepped with the grooves 81 and 82 sandwiched in the depth direction of the grooves 81 and 82 (that is, in the cross-sectional shape). The upstream side along the airflow in the grooves 81 and 82 is a lower stage, and the downstream side along the airflow is an upper stage. Even in such a case, the dew condensation water easily enters the grooves 81 and 82 and does not easily come out of the grooves 81 and 82.

<Modification 3>
The grooves 81 and 82 of the above aspect may be formed in other parts (for example, the unit casing 10, the support plate 33, etc.) instead of or in addition to the partition member 50. The formation of the grooves 81 and 82 can be applied to any part that faces the ventilation path of the airflow generated in the unit casing 10.

  Furthermore, you may form the groove | channels 81 and 82 of the said aspect in the duct apparatus for connecting an air conditioner and a room | chamber interior. For example, you may form the grooves 81 and 82 in heat insulating materials, such as a polystyrene foam, arrange | positioned along the inner surface of the cylindrical casing of a duct apparatus. In this case, it is preferable that the grooves 81 and 82 are formed on the surface facing the ventilation path of the heat insulating material (the air passage defined by the heat insulating material or the cylindrical casing). When the grooves 81 and 82 are formed on such a surface, the dew condensation water in the ventilation passage is easily caught by the grooves 81 and 82, and thus is easily guided to an appropriate drainage mechanism.

  INDUSTRIAL APPLICABILITY The present invention has an effect that it is possible to suppress dripping of the condensed water into the room by correctly guiding the condensed water to the drainage mechanism, and is useful as a ventilation mechanism for the air conditioning unit and the air conditioner.

It is a right view of the indoor unit which concerns on one Embodiment of this invention. It is an indoor unit plane sectional view concerning one embodiment of the present invention. The perspective view of the periphery of a partition member. The top view near right end of a heat exchanger. The perspective view of the periphery of a heat exchanger. The left view of the periphery of a partition member. The front view near the lower part of a partition member. The perspective view near the front part of a partition member. The perspective view which looked at the fitting member diagonally from the back side to the front side. XX sectional drawing of FIG. XI-XI sectional drawing of FIG. Sectional drawing of the groove | channel which concerns on the modification 2. FIG.

Explanation of symbols

2 Indoor unit (air conditioning unit)
2a Unit inlet 2b Unit outlet 10 Unit casing (casing)
30 Heat exchanger 40 Drain pan (drainage mechanism)
50 Partition member (Ventilation path regulating member)
50a Downstream side surface (ventilation side surface)
80 groove 81, 81a-81d first groove 81P first side wall 81Q second side wall 81S introduction part 81T water retention part 82, 82a, 82b second groove 82P first side wall 82Q second side wall 82S introduction part 82T water retention part S1 upstream space S2 Downstream space

Claims (14)

A casing (10);
An air passage defining member (50) for defining an air passage in the casing;
A drainage mechanism (40) for guiding condensed water to the outside of the casing;
With
A groove (80) for guiding the condensed water to the drainage mechanism is formed on the side surface (50a) of the ventilation path defining member facing the ventilation path.
Air conditioning unit (2). The groove (82) is formed at a position of the side surface (50a) of the ventilation path facing a place where the airflow in the casing (10) is relatively low speed.
The air conditioning unit (2) according to claim 1. A heat exchanger (30) disposed in the casing (10),
Further comprising
The ventilation path defining member (50) is disposed in the vicinity of the heat exchanger, and is located upstream of the upstream space (S1) and downstream of the heat exchanger in the air flow direction in the casing (10). A partition member that partitions the side space (S2);
The drainage mechanism (40) is a drain pan disposed below the heat exchanger (30) and the ventilation path defining member (50).
The air conditioning unit (2) according to claim 1 or 2. The groove (80) includes a first groove (81a, 81b) extending in a substantially vertical direction and a second groove (82) intersecting with the first groove.
The air conditioning unit (2) according to any one of claims 1 to 3. The second groove (82) is more downstream in the airflow direction in the casing (10) than the first groove (81b), and is inclined downward toward the first groove.
The air conditioning unit (2) according to claim 4. The second groove (82) is formed in the vicinity of the upper end of the ventilation path side surface (50a) and in the vicinity of the downstream end in the airflow direction in the casing (10).
The air conditioning unit (2) according to claim 5. The groove (81, 82) has an introduction part (81S, 82S) near its entrance and a water retention part (81T, 82T) near its bottom,
The width of the water retention part is narrower than the width of the introduction part,
The air conditioning unit (2) according to any one of claims 1 to 6. The first side wall (82P) of the groove (82) is more inclined near the entrance of the groove than near the bottom of the groove with respect to the second side wall (82Q) of the groove facing the first side wall. ,
Air conditioning unit (2) according to claim 7. The first side wall (81P, 82P) of the groove (81, 82) is upstream of the second side wall (81Q, 82Q) of the groove in the airflow direction in the casing (10),
The second side wall is inclined with respect to the ventilation path side side surface (50a) than the first side wall.
The air conditioning unit (2) according to any one of claims 1 to 7. The heat exchanger (30) is arranged to be inclined with respect to the vertical direction,
The ventilation path defining member (50) is disposed below the heat exchanger,
The air conditioning unit (2) according to claim 3. The ventilation path defining member (50) is substantially triangular.
Air conditioning unit (2) according to claim 10. A ventilation path defining member (50) for defining the air to be conditioned or the ventilation path of the conditioned air;
A drainage mechanism (40) of condensed water in the ventilation path;
With
A groove (80) for guiding the condensed water to the drainage mechanism is formed on the side surface (50a) of the ventilation path defining member facing the ventilation path.
Ventilation mechanism of air conditioner. The groove (80) is formed at a position of the side surface (50a) of the ventilation path facing a place where the airflow in the casing (10) is relatively low speed.
The ventilation mechanism of the air conditioning apparatus of Claim 1. Casing (10),
Further comprising
The ventilation path defining member (50) is a heat insulating material disposed in the casing.
The ventilation mechanism of the air conditioning apparatus of Claim 12 or 13.

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