JP2013015246A - Air conditioning indoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning indoor unit capable of delivering the flow of diffused air to a wider range from side to side.SOLUTION: A wall mounted air conditioning indoor unit 4 includes a body casing 5 and an air direction adjustment section 6. The body casing 5 has a diffusion flow passage 8 for conditioned air. The air direction adjustment section 6 is disposed near the outlet of the diffusion flow passage 8 and has outer vertical flaps 61 and inner vertical flaps 62 adjusting the direction of air. The outer vertical flaps 61 which are located closest to the first side walls 87 of the diffusion flow passage 8, configured in such a manner that, while the outer vertical flaps assume an posture in which the outer vertical flaps are closer to the first side walls 87 toward the downstream side of the flow of the conditioned air, a gap of 10 mm or smaller is formed between the center 61a being a portion of the downstream-side end and a first side wall 87, and each of the outer vertical flaps has portions having gaps larger than 10 mm between the first side wall 87 and the upper portion 61b and lower portion 61c of the outer vertical flap which are portions other than the center 61a of the downstream-side end.

Description

  The present invention relates to an air conditioning indoor unit.

  Conventionally, in wall-mounted air conditioning indoor units, positions where air outlets can be provided are limited compared to ceiling-suspended air conditioners, so conditioned air is blown more widely from the air outlet in the left-right direction. Is required.

  For example, in the air conditioner described in Patent Document 1 (Japanese Patent Application Laid-Open No. Sho 62-10553), focusing on the fact that the left and right side walls of the air outlet obstruct the wider conditioned air blowing to the left and right, A structure that is curved so that the left and right widths of the air outlet expand as it goes in the air blowing direction is adopted. In this air conditioner adopting a shape in which the left and right side walls of the air outlet are enlarged, the air flow to the left and right side walls of the air outlet is prevented from colliding in a state where the conditioned air is blown widely left and right, It makes it possible to spread conditioned air in the left-right direction. In addition, since the side wall portion whose width is expanded to the left and right employs a surface that is gently curved in the left and right direction, a Coanda effect is obtained, and the flow of conditioned air is made to follow the curved surface. Can be further expanded in the left-right direction. As described above, the conditioned air can be blown more widely in the left-right direction.

  In the air conditioner described in Patent Document 1, since a wide space is secured between the left and right side walls of the outlet and the vertical flap, the vertical flap and the vertical flap The flow of conditioned air passing between the left and right side walls remains at a high wind speed. Such a flow of conditioned air has a high wind speed and is difficult to bend suddenly in the left-right direction. For this reason, in the above air conditioner, in order to widen the flow of conditioned air with a high wind speed little by little by the Coanda effect, the air conditioner slightly increases in the left-right direction toward the indoor side (traveling direction when the air flow goes straight). The curved shape is formed so as to spread. This curved shape is a shape that extends long toward the indoor side in order to secure the length of the air flow along the surface (the length that provides the Coanda effect) as long as possible.

  However, if the left and right side surfaces of the air outlet are elongated in the indoor side as described above, the apparatus becomes large.

  This invention is made | formed in view of the point mentioned above, The subject of this invention is providing the air-conditioning indoor unit which can deliver a blowing air flow more widely on either side, without enlarging an apparatus. is there.

  An air conditioning indoor unit according to a first aspect of the present invention is a wall-mounted air conditioning indoor unit, and includes a casing and a wind direction adjusting unit. The casing has a blowout flow path for conditioned air. The wind direction adjusting unit is disposed in the vicinity of the outlet of the blowing channel and has a plurality of wind direction guide vanes for adjusting the wind direction. The plurality of wind direction guide vanes are located between the left and right side walls of the blowing channel. The wind direction guide vane located closest to the predetermined side wall which is one of the left and right side walls is in a state closer to the predetermined side wall toward the downstream side of the air flow of conditioned air, The gap between the first portion, which is a part of the downstream end, and the predetermined side wall is 10 mm or less, and the second portion other than the first portion of the downstream end, The gap between them has a part larger than 10 mm.

  Here, “the state where the downstream side of the air flow of the conditioned air is closer to the predetermined side wall” is a state where the airflow direction guide vane is structurally closest to the predetermined side wall by a regulating means such as a stopper. Alternatively, it may be a state that is closest to the predetermined side wall when the inclination state of the wind direction guide vane is controlled.

  Further, the state that “the gap between the first portion and the predetermined side wall is 10 mm or less” is not particularly limited as long as the closest distance between the first portion and the predetermined side wall is 10 mm or less. A state where the closest distance is 8 mm or less, a state where the closest distance is 5 mm or less, a state where the closest distance is 4 mm, a state where the first portion and the predetermined side wall are in contact with each other, etc. Is included.

  In this air conditioning indoor unit, the conditioned air that is blown out does not easily pass through a portion where the gap between the predetermined side wall and the first portion of the wind direction guide vane is 10 mm or less, and the gap between the predetermined side wall is 10 mm. It passes mainly through the larger part. For this reason, when the conditioned air blown out passes between the predetermined side wall and the wind direction guide vane, “the gap between the first part of the wind direction guide vane and the predetermined side wall is formed narrowly to 10 mm or less. It is unlikely that “the flow velocity is increased by passing through the portion”. Rather, the conditioned air that is blown out passes between the second part and the predetermined side wall, avoiding the part where the gap between the first part of the wind guide vane and the predetermined side wall is narrowly formed to be 10 mm or less. Thus, the passage flow rate of the portion between the first portion and the predetermined side wall is kept low. As a result, the air flow that has passed through the gap between the predetermined side wall and the first portion of the wind direction guide vane has a reduced wind speed. For this reason, the flow of conditioned air that is going to spread in the left-right direction formed by the wind direction guide vanes located inside the wind direction guide vanes located at the ends in the left-right direction among the plurality of wind direction guide vanes is It is less affected by the air flow that has passed through the gap between the side wall and the first portion of the wind direction guide vane, and the extent to which the spread in the left-right direction is blocked is kept small. As a result, it is possible to deliver conditioned air widely to the left and right without adopting a shape in which the left and right side walls of the air outlet are extended to the indoor side (the direction of travel when the air flow is straight) as in the past. This is possible, and the enlargement of the apparatus can be avoided. Further, in the vicinity of such a narrow portion where the gap between the predetermined side wall and the first portion of the wind direction guide vane is 10 mm or less, the gap between the predetermined side wall and the second portion of the wind direction guide vane is 10 mm. Since it is formed widely as described above, the conditioned air is guided to this wide portion, and the pressure loss of the conditioned air passing between the predetermined side wall and the wind direction guide vane can be suppressed.

  As described above, the conditioned air can be delivered more widely in the left-right direction while suppressing the pressure loss of the conditioned air blown out.

  The air conditioner indoor unit according to the second aspect of the present invention is the air conditioner indoor unit according to the first aspect, wherein the airflow direction guide vane is provided at the central portion between the front side edge and the rear side edge of the outlet of the outlet channel or in the vicinity thereof. The gap between the first portion and the predetermined side wall is 10 mm or less. The “center portion or its vicinity” may be only the center portion, only the vicinity of the center portion, or may include both the center portion and its vicinity. For example, the first portion of the wind direction guide vane is only the central portion, only the vicinity of the central portion, or both the central portion and the vicinity thereof, and the front side edge and the back side of the outlet of the outlet channel The width may be less than 50% of the distance between the edges, or less than 40%, less than 30%, less than 20% and less than 10%.

  In the air conditioning indoor unit, the wind speed of the conditioned air flowing near the center of the air outlet is faster than the wind speed of the conditioned air flowing along the wall surface by the amount of friction.

  In this air conditioning indoor unit, a narrow gap of 10 mm or less between the first portion of the wind direction guide vane and the predetermined side wall is employed in the central portion of the air outlet in this way. For this reason, the wind speed of the conditioned air in the vicinity of the center of the outlet can be effectively reduced. As a result, the flow of conditioned air, which is formed on the inner side of the wind direction guide vanes and is going to spread in the left-right direction, passes through the gap between the predetermined side wall and the first portion of the wind direction guide vanes. It is possible to suppress obstruction by the air flow that goes straight at the high wind speed. As a result, the extent to which the spread in the left-right direction is blocked can be more effectively reduced, and the spread of the conditioned air in the left-right direction can be more reliably ensured.

  An air conditioning indoor unit according to a third aspect of the present invention is the air conditioning indoor unit according to the first aspect or the second aspect, wherein the plurality of wind direction guide blades include long blades positioned at both ends in the left-right direction, and long blades And a short blade whose length of the portion along the air flow is short.

  In addition, it is not limited here when only the wind direction guide blade | wing of a left end and the wind direction guide blade | wing of a right end are long blades. For example, a long blade may be further provided between the wind direction guide blade and the short blade at the left end and / or between the wind direction guide blade and the short blade at the right end. In addition, a wind direction guide blade having a size intermediate between the long blade and the short blade is provided between the wind direction guide blade and the short blade at the left end and / or between the wind direction guide blade and the short blade at the right end. May be.

  In this air conditioner indoor unit, long blades are provided at both ends in the left-right direction in which the length of the portion along the air flow is longer than the short blades provided inside. For this reason, when the wind direction guide blades are provided so that the gap between the predetermined side walls can be 10 mm or less, all of the wind direction guide blades are unified with the length of the short blades. Compared to the case, the total number of blades can be reduced. This also makes it possible to reduce the total pressure loss due to all wind direction guide vanes.

  An air conditioning indoor unit according to a fourth aspect of the present invention is the air conditioning indoor unit according to any one of the first to third aspects, wherein the casing extends from the vicinity of the outlet of the outlet flow channel to the left and right, and the airflow mainstream It has a bulging curved surface that is gently bulging in the direction. The main flow direction refers to the main flow of the air flow that occurs when the wind direction is not adjusted for the air flow that occurs along the blowout flow path.

  In this air-conditioning indoor unit, the flow of conditioned air that spreads in the left-right direction formed by the wind direction guide blades located on the inner side among the wind direction guide blades, due to the Coanda effect that causes the bulging curved surface, It becomes possible to expand further.

  The air conditioning indoor unit according to the fifth aspect of the present invention is the air conditioning indoor unit according to the fourth aspect, wherein the bulging height of the bulging curved surface in the main flow direction of the air flow is determined by the left and right side walls of the blowout flow path and the left and right sides of the casing. It is less than half of the thickness between the side surfaces. Here, the thickness between the left and right side walls of the blowing channel and the left and right side surfaces of the casing may be, for example, the thickness in the vicinity of the outlet of the blowing channel. Moreover, the bulging height of the bulging curved surface is, for example, preferably 20 mm or less, and more preferably 10 mm or less.

  In this air conditioning indoor unit, since the bulging height is kept low, it is possible to suppress the air on the indoor side from flowing toward the left and right side walls of the outlet.

  The air conditioning indoor unit according to the sixth aspect of the present invention is the air conditioning indoor unit according to the fourth aspect or the fifth aspect, wherein the predetermined side wall and the bulging curved surface are gently curved with a degree of curvature larger than the degree of curvature of the bulging curved surface. It is connected. Here, the large degree of curvature includes, for example, a small curvature radius.

  In this air conditioning indoor unit, the predetermined side wall and the bulging curved surface are smoothly connected, so that the flow of conditioned air is less likely to be separated from the surface of the casing, and the Coanda effect can be obtained more reliably. Yes. In addition, the degree of curvature of the portion where the predetermined side wall and the bulging curved surface are connected is larger than the degree of curvature of the bulging curved surface, so that the outlet of the blowing channel can be sufficiently expanded to the left and right. is made of. Thereby, it becomes possible to supply conditioned air more widely in the left-right direction while suppressing the flow of conditioned air from peeling from the bulging curved surface.

  The air conditioning indoor unit pertaining to a seventh aspect of the present invention is the air conditioning indoor unit pertaining to any of the fourth to sixth aspects, further comprising ribs protruding from the bulging curved surface and extending in the left-right direction.

  In this air conditioning indoor unit, the conditioned air that has flowed out of the blowout channel can be more reliably guided to the left and right.

  An air conditioner indoor unit according to an eighth aspect of the present invention is the air conditioner indoor unit according to any one of the first aspect to the seventh aspect, and is disposed on the downstream side of the outlet of the outlet channel, and the left and right side walls of the outlet channel are It further includes a guide plate that changes the direction of the flow along each direction and guides it to the left and right.

  In this air conditioning indoor unit, the conditioned air that has flowed out of the outlet channel is adjusted by the guide plate so that the direction of travel is forced to spread in the left and right direction, so that the conditioned air can be guided more reliably to the left and right. become.

  With the air conditioning indoor unit pertaining to the first aspect of the present invention, it is possible to deliver conditioned air more widely in the left-right direction while suppressing the pressure loss of the conditioned air that is blown out.

  In the air conditioning indoor unit pertaining to the second aspect of the present invention, it is possible to more reliably ensure the spread of conditioned air in the left-right direction.

  In the air conditioning indoor unit pertaining to the third aspect of the present invention, the total number of wind direction guide vanes can be reduced.

  In the air conditioning indoor unit pertaining to the fourth aspect of the present invention, the supply direction of conditioned air can be further expanded in the left-right direction.

  In the air conditioning indoor unit according to the fifth aspect of the present invention, it is possible to suppress the air on the indoor side from flowing toward the left and right side walls of the air outlet.

  In the air conditioning indoor unit pertaining to the sixth aspect of the present invention, it becomes possible to supply conditioned air more broadly in the left-right direction while suppressing the flow of conditioned air from peeling from the bulging curved surface.

  In the air conditioning indoor unit pertaining to the seventh aspect of the present invention, the conditioned air that has flowed out of the outlet channel can be more reliably guided to the left and right.

  In the air conditioning indoor unit pertaining to the eighth aspect of the present invention, the conditioned air can be more reliably guided to the left and right.

It is a schematic block diagram of the air conditioning apparatus which concerns on one Embodiment of this invention. It is a general | schematic external appearance perspective view of the blowout flow path vicinity of the air-conditioning indoor unit seen from the diagonally downward front in the state which removed the horizontal flap. It is a general | schematic external appearance perspective view of the blowout flow path vicinity of the air-conditioning indoor unit seen from the downward front in the state which removed the horizontal flap. It is a schematic sectional drawing of the blowout flow path vicinity of the air-conditioning indoor unit seen from the side surface side. It is a schematic sectional drawing of the air-conditioning indoor unit seen from the rotating shaft direction of the wind direction guide blade. It is a top view schematic sectional drawing of an air-conditioning indoor unit. It is a top view schematic sectional drawing of the air-conditioning indoor unit which concerns on other embodiment (5-1). It is a top view schematic sectional drawing of the air conditioning indoor unit which concerns on other embodiment (5-2). It is the schematic sectional drawing seen from the rotating shaft direction of the wind direction guide blade | wing of the air conditioning indoor unit which concerns on other embodiment (5-3). It is a general | schematic external appearance perspective view of the ventilation flow path vicinity of the air-conditioning indoor unit seen from the downward diagonal front which concerns on other embodiment (5-4). It is a top view schematic sectional drawing of the air-conditioning indoor unit which concerns on other embodiment (5-5). It is a top view schematic sectional drawing in which the wind direction guide blade | wing of the conventional air conditioning indoor unit is located in the downstream. It is a top view schematic sectional drawing in which the wind direction guide blade | wing of the conventional air conditioning indoor unit is located in an upstream. It is the schematic sectional drawing seen from the direction of the axis of rotation of the wind direction guidance blade of the air-conditioning indoor unit concerning a reference example.

  Hereinafter, an air conditioner 1 as an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a refrigerant circuit diagram showing a refrigerant circuit 10 of the air conditioner 1.

(1) Schematic configuration of air conditioner 1 In the air conditioner 1, an air conditioner outdoor unit 2 as a heat source side device and an air conditioner indoor unit 4 as a use side device are connected by a refrigerant pipe, and the use side device is arranged. Air conditioning of the space created. The air conditioner 1 includes a refrigerant circuit 10, various sensors, and a control unit 70.

  The refrigerant circuit 10 includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor electromagnetic expansion valve 24, an accumulator 25, an outdoor fan 26, an indoor heat exchanger 41, an indoor fan 42, and the like. These are connected to each other. The compressor 21, the four-way switching valve 22, the outdoor heat exchanger 23, the outdoor electromagnetic expansion valve 24, the accumulator 25, and the outdoor fan 26 are accommodated in the air conditioning outdoor unit 2, and the indoor heat exchanger 41 The indoor fan 42 is accommodated in the air conditioning indoor unit 4. The outdoor fan 26 is a propeller fan. The indoor fan 42 is a cross flow fan. The details of the indoor air conditioner 4 will be described later.

  The four-way switching valve 22 can switch between a cooling operation cycle and a heating operation cycle. In FIG. 1, the connection state when performing the cooling operation is indicated by a solid line, and the connection state when performing the heating operation is indicated by a dotted line. During the heating operation, the indoor heat exchanger 41 functions as a refrigerant cooler, and the outdoor heat exchanger 23 functions as a refrigerant heater. During the cooling operation, the outdoor heat exchanger 23 functions as a refrigerant cooler, and the indoor heat exchanger 41 functions as a refrigerant heater.

  The control unit 70 receives an outdoor control unit 72 that controls equipment disposed in the air conditioning outdoor unit 2, an indoor control unit 74 that controls equipment disposed in the air conditioning indoor unit 4, and various setting inputs from the user. And a controller 71 that performs various display outputs and various sensors are connected by a communication line 70a. The control unit 70 performs various controls for the air conditioner 1.

  The control unit 70 receives various operation settings from the user via the controller 71 and performs various controls.

(2) Details of Air Conditioning Indoor Unit 4 FIG. 2 shows a schematic external perspective view of the air conditioning indoor unit 4 as viewed obliquely from the lower front side with the horizontal flap removed. FIG. 3 shows a schematic external perspective view of the air conditioning indoor unit viewed from the lower front side with the horizontal flap removed. In FIG. 4, the schematic sectional drawing of the air-conditioning indoor unit seen from the side surface is shown. FIG. 5 is a schematic cross-sectional view of the air conditioning indoor unit viewed from the direction of the rotation axis of the wind direction guide vane. FIG. 6 shows a schematic sectional view of the air conditioning indoor unit in a top view (in FIG. 6, the horizontal flap 45 is not shown).

  The air conditioning indoor unit 4 includes a main body casing 5, an outer vertical flap 61, an inner vertical flap 62, and the like in addition to the indoor heat exchanger 41 and the indoor fan 42 described above.

(2-1) Main body casing 5
The main body casing 5 includes a front panel 5a covering the front surface side, a lower panel 5b covering the lower surface side, curved surface portions 80 provided on the left and right sides of the air outlet, and an outlet channel 8 formed surrounded by these. Have.

  The lower part of the front panel 5a extends obliquely to the back side and constitutes the upper edge of the outlet of the outlet passage 8.

  The lower surface panel 5 b is a panel extending in a substantially horizontal direction, and the front edge portion constitutes the lower edge of the blowout flow path 8.

  The blow-out flow path 8 has a blow-out opening that opens obliquely downward on the front side between the lower panel 5b of the main casing 5 and the front panel 5a. As shown in FIG. 4, the rear surface of the blowout flow path 8 is formed from the front side edge portion of the lower surface panel 5b while being curved so as to protrude toward the lower side of the rear surface as it extends upward. The blowing back surface 8a to be extended is extended. Further, as shown in FIG. 4, from the lower edge of the front panel 5a, the front surface of the outlet channel 8 is curved so as to extend upward toward the back side and to protrude downward on the back side. The blowing front 8b which comprises is extended.

  The curved surface portion 80 is provided on each of the left and right sides of the air outlet that is the outlet of the air outlet channel 8, and extends so as to connect the lower end edge portion of the front panel 5a and the front end edge portion of the lower surface panel 5b. As shown in FIG. 5, which is a cross-sectional view taken along a plane extending in the left-right direction and in the depth direction of the blowout flow path 8, the curved surface portion 80 is bulged curved surface 85 (in FIG. 5) so as to bulge indoors. , A part of which is indicated by a two-dot chain line). Further, the bulging curved surface 85 constitutes a central portion in the left-right direction of the curved surface portion 80, and the bulging vertex is continuous from the lower end edge of the front panel 5a toward the front edge of the lower surface panel 5b. It is configured. In this embodiment, the degree of curvature of the bulging curved surface 85 is formed such that the radius of curvature R1 is about 100 mm as shown in FIG. Note that the bulging height h1 of the bulging curved surface 85 (the width in the main flow direction when the airflow is straight without adjusting the wind direction) is between the first side wall 87 in the vicinity of the outlet of the blowing channel 8 and the main casing 5. It is formed to be half or less of the thickness h2 between the side surface portion 5c. The bulging height h1 is preferably 30% or less of the thickness h2, for example, more preferably 20 mm or less, and most preferably 10 mm or less. In addition, on the surface on the back side of the bulging curved surface 85 (inside the main body casing 5), electrical components and structural components are arranged so as to approach each other.

  The curved surface portion 80 has an outer curved surface 84 that gently connects the outer side of the bulging curved surface 85 in the left-right direction and the side surface portion 5c of the main body casing 5. Further, the curved surface portion 80 has an inner curved surface 86 that gently connects between the inner side in the left-right direction of the bulging curved surface 85 and the first side wall 87 that forms the side wall in the vicinity of the outlet of the blowout flow path 8. . The curvature radius R2 of the inner curved surface 86 is formed to be smaller than the curvature radius R1 of the bulging curved surface 85.

  As shown in FIGS. 2, 3, and 5, guide ribs 81, 82, and 83 that are perpendicular to the curved surface portion 80 and extend in the left-right direction are formed on the curved surface portion 80, as shown in FIGS. Has been. The guide ribs 81, 82, 83 are formed to extend in parallel with each other from the vicinity of the center in the left-right direction of the curved surface portion 80 to the vicinity of the front of the outer curved surface 84. Further, these guide ribs 81, 82, 83 are arranged at equal intervals in the front-rear direction.

  The first side wall 87 in the vicinity of the outlet of the blowout flow path 8 expands toward the upstream side of the blowout flow path 8 and then rises inward in the left-right direction by a slight width (width indicated by “d2” in FIG. 5). The second side wall 89 that spreads further toward the upstream side of the blowout flow path 8 is connected via the portion 88. In this manner, the side wall of the blowout flow path 8 mainly extends so that the first side wall 87 in the vicinity of the outlet and the first side wall 87 are substantially in parallel with the first side wall 87 on the upstream side. And two side walls 89. In addition, although illustration is abbreviate | omitted, the 1st side wall 87 and the 2nd side wall 89 on either side of the blowing flow path 8 are provided so that it may become a symmetrical shape mutually. In addition, the blower outlet which is an outlet of the blower flow path 8 can be made into the surface which connected the leeward side edge parts of the 1st right-and-left side wall 87 mutually.

  An indoor fan 42, which is a cross flow fan, is disposed inside the main body casing 5 on the upstream side of the blowout flow path 8, and the indoor fan 42 is driven and controlled by the control unit, whereby the air flow into the blowout flow path 8 is achieved. Is formed. Here, the amount of blown air can be adjusted in six stages. Specifically, the horizontal flap 45, the outer vertical flap 61 and the inner vertical flap 62 are in a state where the ventilation resistance is the lowest, and the small capacity machine is used. If there is, the user can select within a range of 3 to 6 m / s wind speed (5 to 8 m / s wind speed for a large capacity machine).

(2-2) Horizontal flap 45
The posture of the horizontal flap 45 is changed so that the traveling direction of the blown air flow can be changed up and down by a horizontal flap driving mechanism (not shown). The posture of the horizontal flap 45 is controlled by the control unit 70 that has been set by the user. In the state shown in FIG. 4, the horizontal flap 45 is formed such that a surface on the downstream side of the air flow (a surface facing the indoor side) is curved so as to be slightly convex toward the indoor side.

  In addition, the horizontal flap 45 will be in the state which covered the blower outlet which is the exit of the blower flow path 8, as shown in FIG. In this state, the front edge of the horizontal flap 45 is substantially flat and in contact with the lower edge of the front panel 5a, and is in a state where it is gently connected in side view. The edge on the back side of the horizontal flap 45 is in a state where it is gently connected in a side view while ensuring a slight gap with the front edge of the lower panel 5b.

(2-3) Outer vertical flap 61 and inner vertical flap 62
As shown in FIGS. 2 and 3, the outer vertical flap 61 is a vertical flap disposed closest to the first side wall 87 and the second side wall 89, which are the right side surfaces of the blowout flow path 8. The outer vertical flap 61 is rotatably supported by a shaft member 61x whose longitudinal direction is an oblique front-rear direction (a direction perpendicular to the air flow direction (main flow direction)). Although illustration is omitted, the outer vertical flap 61 is similarly arranged in the vicinity of the first side wall 87 and the second side wall 89 which are the left side surfaces of the blowout flow path 8.

  A plurality of inner vertical flaps 62 are disposed between the right outer vertical flap 61 and the left outer vertical flap 61. The inner vertical flap 62 is rotatably supported by a shaft member 62x whose longitudinal direction is the oblique front-rear direction.

  The outer vertical flap 61 and the inner vertical flap 62 are in a state in which the conditioned air is blown straight into the room without adjusting the wind direction (the outer vertical flap 61 and the inner vertical flap 62 are connected to the first side wall 87 and the outlet channel 8). In the state substantially parallel to the second side wall 89, the distance between adjacent ones in the left-right direction is all equal.

  As shown in FIGS. 1 and 2, the outer vertical flap 61 and the inner vertical flap 62 are blown out from the blow back surface 8 a of the blow flow channel 8 and the blow in the plane perpendicular to the air flow direction (main flow direction) in the blow flow channel 8. A central portion 61a between the front surface 8b is formed to extend to the leeward side most. Of the leeward side edge of the outer vertical flap 61, the upper portion 61b that is closer to the blow-out front surface 8b than the central portion 61a is formed to be shorter than the central portion 61a. . Of the leeward edges of the outer vertical flap 61, the lower part 61c, which is closer to the blowout back surface 8a than the central part 61a, is also formed so as to be positioned upstream of the central part 61a in the air flow direction. .

  The outer vertical flap 61 is formed to have a longer length in the air flow direction (main flow direction) than the inner vertical flap 62.

  Each of the outer vertical flaps 61 and each of the inner vertical flaps 62 is arranged so that the entirety is positioned on the windward side of the bulging curved surface 85 in the state of being adjusted to an arbitrary angle in the blowing flow path 8. Has been. In addition, as shown by a solid line in FIG. 5, in a state where each outer vertical flap 61 and each inner vertical flap 62 are controlled so as to be inclined most in the left-right direction, The entire surface is located upstream of the leeward side end portions of the one side wall 87 in the air flow direction. As described above, the outer vertical flap 61 has a shape in which the middle part between the blowout back surface 8a and the blowout front surface 8b extends the longest, so that the outer vertical flap 61 is controlled to be inclined most in the left-right direction. The tip portion on the downstream side is closest to the first side wall 87 of the outlet channel 8. As shown in FIGS. 5 and 6, in this state, the closest distance d1 between the downstream end of the outer vertical flap 61 in the air flow direction and the first side wall 87 of the outlet flow path 8 is 10 mm or less. In addition, the position of the outer vertical flap 61 is adjusted.

  As shown in FIG. 6, each of the outer vertical flaps 61 and each of the inner vertical flaps 62 is divided into a right half group and a left half group in the blowing channel 8. Of these, the outer vertical flap 61 and the inner vertical flap 62 belonging to the right half group are all made up by a shaft 69 so that the inclination state can be adjusted integrally as shown in FIGS. It is connected. The shaft 69 is moved left and right by receiving power from a drive motor (not shown) when the control unit 70 performs adjustment control of the blow-off angle in the left-right direction, and the outer vertical flap 61 belonging to the right half group and the inner side The inclination state of the vertical flap 62 is adjusted integrally. The same applies to the left half group. In FIG. 6, the outer vertical flap 61 and the inner vertical flap 62 of the right half group are adjusted to the right, and the outer vertical flap 61 and the inner vertical flap 62 of the left half group are adjusted to the left. ing. In this way, the wind direction adjusting portion 6 is configured by the outer vertical flap 61, the shaft member 61x, the inner vertical flap 62, the shaft member 62x, the shaft 69, and the like.

(3) Air Flow In the air conditioning indoor unit 4 configured as described above, when the indoor fan 42 housed therein is driven, conditioned air is blown out to the indoor side through the blowout flow path 8.

  Here, as shown in FIG. 5, when the outer vertical flap 61 and the inner vertical flap 62 are adjusted so that the supply destination of the conditioned air is spread most horizontally, as shown in FIG. The air flow F9 flowing along the second side wall 89 of the flow path 8 is very narrow between the first side wall 87 of the outlet flow path 8 and the central portion 61a of the outer vertical flap 61 (less than 10 mm). Therefore, the flow velocity of the conditioned air that tries to pass through the middle part of the blowout rear face 8a and the blowout front face 8b is reduced. Here, in a state where the conditioned air goes straight without adjusting the wind direction, the wind speed is the fastest in the middle portion of the blow back surface 8a and the blow front surface 8b in the air flow F9. The above structure makes it possible to keep the airflow at the fastest wind speed low. With this structure, the flow in which the passage of the middle portion of the blow back surface 8a and the blow front surface 8b in the air flow F9 is restricted is the portion of the outer vertical flap 61 in which the gap between the first side wall 87 is wider. It is guided toward the gap between the upper part 61 b and the first side wall 87 and the gap between the lower part 61 c and the first side wall 87.

  For this reason, as shown in FIG. 5, the flow direction is bent so as to spread in the left-right direction by flowing between the outer vertical flap 61 and the inner vertical flap 62 immediately adjacent thereto, and the air flow F3 is the air flow F5. (See FIGS. 2 and 3). For this reason, the flow which spreads in the left-right direction is not interrupted by the air flow F9. This air flow F5 has already been bent largely in the direction of travel by the inner vertical flap 62 in the direction spreading outward in the left-right direction. Then, the air flow F5 can follow the surface of the bulging curved surface 85 formed by gently bulging indoors without colliding with the first side wall 87 of the blowout flow path 8 by the Coanda effect. It flows to spread in the direction. In this way, conditioned air can be widely delivered in the left-right direction. For this reason, as in the prior art, even if the bulge height in the mainstream direction is not secured high (even if the length for obtaining the Coanda effect is not long enough to spread to the left and right), the conditioned air is left and right. It can be delivered widely in the direction. And even if it is a case where the height in the mainstream direction of the bulging curved surface 85 is restrained low, conditioned air can be delivered widely in the left-right direction, and the enlargement of an apparatus can be avoided.

  The air flow F5 that tends to spread in the left-right direction is further guided in the left-right direction by guide ribs 81, 82, 83 provided on the outer side in the left-right direction of the curved surface portion 80.

(4) Features of the above embodiment (4-1) Conventional problems For example, as shown in FIG. 12, in the conventional air conditioning indoor unit 901, the left and right side walls of the air outlet extend long downstream ( In the case where the distance from the downstream end of the indoor fan 942 is longer by the distance d91, in the vicinity of the left and right downstream sides of the air outlet, the accommodation 909 (motor and terminal block for changing the attitude of the wind direction adjusting blade) , And electrical components such as wiring) can be secured. However, the air flow F7 adjusted so that the traveling direction spreads to the left and right by the inner vertical flaps collides with the left and right side walls extending to the downstream side, and cannot spread in the left and right directions. In addition, since the space between the left and right side walls of the air outlet and the vertical flap is wide, the air flow F91 flowing along the left and right side walls of the air outlet passage has a large amount of air passing through it, so the wind speed is fast. For this reason, the air flow F7 adjusted so that the traveling direction spreads left and right by the inner vertical flaps is inhibited from spreading in the left-right direction by the air flow F91 having a high wind speed, and does not spread in the left-right direction. The air flow is F95.

  On the other hand, for example, as shown in FIG. 13, in another conventional air conditioning indoor unit 902, the left and right side walls of the blowout flow path are curved so as to expand to the left and right toward the outlet side. (The distance from the downstream end of the indoor fan 942 is shorter than the distance d91 in FIG. 12, and the distance from the position of the distance d92, which is the position entering the blowing channel, is extended in the left-right direction). In this other conventional example, as shown on the right side of FIG. 13, in the inclined state in which the vertical flap generates an air flow spreading in the left-right direction, the problem that the side wall hinders the spread in the left-right direction can be improved. ing. In addition, the curved surface in the vicinity of the outlet of the outlet channel is formed so as to gradually expand in the left-right direction toward the downstream side (inside the room) in the main flow direction, and the length that the air flow can follow is increased. Secured. For this reason, even if the air flow F92 has a high wind speed and has passed through a wide space between the left and right side walls and the vertical flap, a long distance is ensured to flow along the curved surface, and more Coanda effects can be obtained. It is supposed to be. For this reason, it is possible to further expand in the left-right direction while keeping the air flow F93 along the curved surface by a sufficient Coanda effect. However, in this case, as shown in FIG. 13, since the side wall of the blowout channel extends from the upstream side to the left and right, the accommodation space for the contents 909 is limited. Moreover, if an attempt is made to form a curved surface to the extent that the Coanda effect can be obtained while securing the accommodation space for the accommodation 909, the apparatus will be enlarged toward the indoor side. On the other hand, as shown on the left side of FIG. 13, in a state where the conditioned air goes straight without tilting the vertical flap, an air flow F8 that goes straight toward the indoor side and an air flow F96 that goes straight between the side surfaces are generated. In addition, it is difficult for a flow to spread left and right along the curved surface. For this reason, the pressure in the vicinity of the surface of the curved surface is low, and unbalanced indoor air tends to flow (air flow F97 is likely to occur), which causes condensation during surging or cooling.

(4-2) Solution of problems with the air conditioning indoor unit 4 of the above embodiment On the other hand, in the air conditioning indoor unit 4 of the above embodiment, the air flow F <b> 9 that flows along the second side wall 89 of the outlet flow path 8. Among them, the flow passing through the central portion of the blowout flow path 8, which is the portion where the wind speed becomes the fastest when traveling straight, is such that the passing gap becomes narrow (the first side wall 87 and the central portion 61 a of the outer vertical flap 61 are Since it is adjusted (approaching 10 mm or less), the air flows while avoiding this narrow portion, and the speed is reduced by suppressing the passing air volume. For this reason, the air flow F <b> 9 is difficult to inhibit the air flow F <b> 3 whose traveling direction is expanded in the left-right direction by the inner vertical flap 62. For this reason, the air flow F3 bent by the inner vertical flap 62 so that the traveling direction spreads in the left-right direction can spread in the left-right direction as it is. Even in this case, the upper portion 61b and the lower portion 61c of the outer vertical flap 61 have a wider gap with the first side wall 87 of the blowout flow path 8, so that the pressure loss increases too much. There is nothing.

  In addition, by generating the air flow that spreads in the left-right direction, it is possible to suppress unbalanced air flowing in from the indoor side as described in the example of FIG. 12, and it is possible to suppress the occurrence of surging and condensation. Yes.

  The curved surface portion 80 of the above-described embodiment extends to the leeward side end portions of the outer vertical flap 61 and the inner vertical flap 62. In addition, since the conditioned air can be expanded in the left-right direction by the above-described structure, it is necessary to provide a long curved surface along which the air flow flows in order to sufficiently secure the Coanda effect as in the conventional example shown in FIG. No bulge height h1 can be shortened. For this reason, while being able to ensure the space for accommodating a thing to be accommodated, it can avoid that an apparatus enlarges too much.

  The outer vertical flap 61 has a longer length in the air flow direction (main flow direction) than the inner vertical flap 62. This makes it possible to reduce the total number of vertical flaps required to keep the gap with the first side wall 87 small compared to the case where all the vertical flaps are unified with the same one as the inner vertical flap 62. It has become.

  In addition, a bulging curved surface 85 provided so as to spread right and left from the vicinity of the outlet of the blowout flow path 8 is formed to bulge toward the downstream side in the air flow direction (main flow direction), and the first side wall 87. Since it is connected via the gentle inner curved surface 86, the air flow in which the wind direction is guided in the left-right direction can be further expanded in the left-right direction by the Coanda effect without peeling off from the curved surface. Furthermore, the spread of the air flow in the left-right direction can be more reliably guided in the left-right direction by the guide ribs 81, 82, 83.

(5) Other embodiments (5-1)
In the above-described embodiment, the case where the outer vertical flap 61 and the inner vertical flap 62 have different lengths in the air flow direction has been described as an example.

  However, the present invention is not limited to this, and for example, as shown in FIG. 7, an air conditioning indoor unit 204 in which the length in the air flow direction is common to the outer vertical flap 61 and the inner vertical flap 262 may be used. .

(5-2)
In the said embodiment, the case where the left-right direction outer side edge part of the curved surface part 80 of the main body casing 5 had the outer curved surface 84 formed by curving gently was mentioned as an example, and was demonstrated.

  However, the present invention is not limited to this. For example, as shown in FIG. 8, the outer curved surface is not provided, and a corner shape 384 configured to continue to extend in the left-right direction to the left and right side surfaces is employed. The air conditioning indoor unit 304 may be used.

(5-3)
In the said embodiment, the case where the expansion of the conditioned air to the left-right direction was implement | achieved as an example by narrowing the distance of the outer side vertical flap 61 and the 1st side wall 87 of the blowing flow path 8 was demonstrated as an example.

  However, the present invention is not limited to this. For example, as shown in FIG. 9, the air flow flowing out from the outlet is forcibly guided in the left-right direction as a separate member from the outer vertical flap 61, the first side wall 87, and the like. It may be an air conditioning indoor unit provided with a guide plate 409 that generates the air flow F405.

  Here, it is desirable that the guide plate 409 is disposed so as to partially overlap the extension line L of the surface of the second side wall 89 of the blowout flow path 8.

  For example, as shown in FIG. 14, in the case of the air conditioning indoor unit 903 in which the entire guide plate 909 is located on the outer side in the left-right direction with respect to the extension line L of the surface of the second side wall 89 of the blowout flow path 8, The effect of spreading the flow in the left-right direction cannot be obtained sufficiently.

(5-4)
In the above embodiment, when the air flow is guided so as to spread in the left-right direction, the gap between the outer vertical flap 61 and the first side wall 87 of the outlet channel 8 is adjusted to be 10 mm or less. Was described as an example.

  However, the present invention is not limited to this, and the value of the gap between the outer vertical flap 61 and the first side wall 87 of the blowout flow path 8 is not particularly limited as long as it is 10 mm or less. May be adjusted to be 6 mm or less, may be adjusted to be 4 mm or less, or the outer side vertical flap 61 and the first side wall of the outlet flow path 8 may be adjusted. 87 may be in contact with each other.

  Furthermore, as shown in FIG. 10, an air conditioner indoor unit 504 configured such that the downstream end of the outer vertical flap 561 is in contact with the first side wall 87 of the outlet channel 8 at the point P may be used.

(5-5)
In the above embodiment, the case where the guide ribs 81, 82, 83 are provided to extend straight in the left-right direction has been described as an example.

  However, the present invention is not limited to this, and for example, as shown in FIG. 11, the air flow F605 slightly enhanced in the left-right direction and slightly guided to the back side while being expanded in the left-right direction is generated. Alternatively, the air conditioning indoor unit 604 having the guide ribs 681, 682, 683 formed in a curved shape may be used.

(5-6)
In the said embodiment, the case where the clearance gap between the outer side vertical flap 61 and the 1st side wall 87 of the blowing flow path 8 was controlled by position control of the shaft 69 by the control part 70 was mentioned as an example, and was demonstrated.

  However, the present invention is not limited to this. For example, the user may manually adjust the inclination state of the outer vertical flap 61 so that the gap with the first side wall 87 is 10 mm or less.

  Further, a physical stopper, positioning means, or the like may be provided so that the gap between the outer vertical flap 61 and the first side wall 87 is 10 mm or less in the maximum inclination state in the left-right direction.

(5-7)
In the said embodiment, the case where the blowing air flow was expanded in the left-right direction was mentioned as an example, and was demonstrated.

  However, the present invention is not limited to this. For example, the present invention can be similarly applied to a case where the air flow is directed only in the left direction or a case where the air flow is directed only in the right direction.

  The air-conditioning indoor unit of the present invention is particularly useful when applied to an apparatus for supplying conditioned air widely in the left-right direction.

4 Air conditioning indoor unit 5 Body casing (casing)
5c Side (side)
6 Wind direction adjustment part 8 Blowing flow path 61 Outside vertical flap (wind direction guide blade, long blade)
61a Center part (first part)
61b Upper part (second part)
61c Lower part (second part)
62 Inside vertical flap (short blade)
85 Swelling curved surface 86 Inside curved surface (curved surface)
81, 82, 83, 681, 682, 683 Guide rib (rib)
409 guide plate

Japanese Patent Laid-Open No. 62-10553

Claims (8)

In the wall-mounted air conditioning indoor unit (4),
A casing (5) having a conditioned air outlet channel (8);
A wind direction adjusting portion (6) disposed in the vicinity of the outlet of the blowout flow path and having a plurality of wind direction guide blades (61, 62) for adjusting the wind direction;
With
The plurality of wind direction guide vanes are located between the left and right side walls (87) of the outlet channel,
The wind direction guide vane (61) located closest to the predetermined side wall (87) which is one of the left and right side walls is closer to the downstream side of the air flow of the conditioned air. In a state that is close to
The gap between the first portion (61a) which is a part of the downstream end portion and the predetermined side wall is 10 mm or less, and
The second portion (61b, 61c) other than the first portion at the downstream end has a portion where the gap between the predetermined side wall is larger than 10 mm.
Air conditioning indoor unit (4). In the central part between the front side edge and the back side edge of the outlet of the outlet channel, or in the vicinity thereof, the gap between the first part of the wind guide vane and the predetermined side wall is 10 mm or less. ing,
The air conditioning indoor unit according to claim 1. The plurality of wind direction guide vanes include a long vane (61) located at both ends in the left-right direction and a short vane (62) having a shorter length along the air flow than the long vane. include,
The air conditioning indoor unit according to claim 1 or 2. The casing has a bulging curved surface (85) that extends from the vicinity of the outlet of the blowing channel to the left and right and gently bulges toward the main flow direction of the air flow.
The air conditioning indoor unit according to any one of claims 1 to 3. The bulging height (h1) of the bulging curved surface (85) in the main flow direction of the air flow is determined between the left and right side walls (87) of the blowing channel and the left and right side surfaces (5c) of the casing (5). Less than half of the thickness (h2) between,
The air conditioning indoor unit according to claim 4. The predetermined side wall and the bulging curved surface are smoothly connected via a curved surface (86) having a degree of curvature larger than the degree of curvature of the bulging curved surface.
The air conditioning indoor unit according to claim 4 or 5. Further comprising ribs (81, 82, 83, 681, 682, 683) protruding from the bulging curved surface and extending in the left-right direction;
The air conditioning indoor unit (4, 604) according to any one of claims 4 to 6. Further provided with a guide plate (409) disposed downstream of the outlet of the outlet passage and guiding the left and right by changing the direction of the flow along the left and right side walls of the outlet passage,
The air conditioning indoor unit (404) according to any one of claims 1 to 7.

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