JP2010065877A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of obtaining stable blown-off airflow by suppressing disturbance of air current in a blowoff passage even when a projection exists in the blowoff passage. <P>SOLUTION: This air conditioner includes: a casing 10 provided with an air inlet and an air outlet 20; an indoor heat exchanger 31 disposed in the casing 10; an air distribution fan 32 which is disposed at a leeward side of the indoor heat exchanger 31 in the casing 10 and blows off the air, sucked from the air inlet through the indoor heat exchanger 31, from the air outlet 20; the blowoff passage 33 disposed between the air distribution fan 32 and the air outlet 20, and having the projection 35 on its upper wall surface; and a third horizontal flap 23 rotatably supported at an upper side of the blowoff passage 33, and having a recess 23a covering the projection 35 on a position corresponding to the projection 35. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioner.

  Conventionally, as an air conditioner, there is an air conditioner in which a plurality of vertical flaps rotatably supported at an air outlet is disposed (see, for example, JP-A-2008-170122 (Patent Document 1)). In the air conditioner, the left and right blowing directions are controlled by manually rotating a plurality of vertical flaps.

  By the way, an air conditioner that automatically controls the right and left blowing direction using a vertical flap has been manufactured. In such an air conditioner, the bottom frame of the air conditioner that manually rotates the vertical flap is also used to reduce the manufacturing cost by sharing the parts.

However, when the bottom frame is also used as the air conditioner for automatically rotating the vertical flap and the air conditioner for manually rotating the vertical flap, a manual rotation mechanism for the vertical flap on the upper side of the blowing passage is unavoidable in manufacturing. A protrusion may be formed as a part of the surface. In this case, in the air conditioner that automatically rotates the vertical flap, particularly in the horizontal blowing during cooling operation, the airflow in the blowing passage is disturbed by the projection on the upper side of the blowing passage, and the blowing air flow is not stable. There is.
JP 2008-170122 A

  Accordingly, an object of the present invention is to provide an air conditioner that suppresses the disturbance of the airflow in the blowing passage and can provide a stable blown air flow even when there is a protrusion on the upper side of the blowing passage.

In order to solve the above problems, the air conditioner of the present invention is
A casing provided with an inlet and an outlet;
A heat exchanger disposed in the casing;
A blower fan that is arranged on the leeward side of the heat exchanger in the casing and blows out air sucked from the suction port through the heat exchanger from the blowout port,
A blow-off passage provided between the blower fan and the blow-out port, and having a protrusion on the wall surface;
An airflow stabilizing member that is rotatably supported by the outlet passage and has a recess that covers the protrusion at a position corresponding to the protrusion.

  According to the air conditioner having the above configuration, the protrusion on the wall surface of the blowout passage provided between the blower fan and the blower outlet corresponds to the protrusion of the airflow stabilization member that is rotatably supported by the blowout passage. By covering with the concave portion at the position where the air flows, the projection of the blowout passage does not disturb the airflow in the blowout passage. Therefore, even if there is a protrusion in the blowout passage, the airflow in the blowout passage is prevented from being disturbed, and a stable blown air flow can be obtained.

  Moreover, in the air conditioner of one Embodiment, the said airflow stabilization member is a horizontal flap.

  According to the said embodiment, the airflow control of an up-down direction can be performed by using a horizontal flap as an airflow stabilization member.

  Moreover, in the air conditioner of one Embodiment, the said recessed part of the said airflow stabilization member is carrying out streamline shape.

  According to the above embodiment, the convex portion formed on the outlet passage side of the airflow stabilizing member by the streamline-shaped concave portion becomes a streamline shape, and the turbulence of the airflow on the outlet passage side of the airflow stabilizing member is less. Become.

  Moreover, in the air conditioner of one Embodiment, the said airflow stabilization member is rotatably supported by the said blowing channel | path at the windward end part.

  According to the above embodiment, the airflow stabilizing member can be used as the wind direction control flap of the lower blowing air during heating operation by rotatably supporting the windward end of the airflow stabilizing member in the blowout passage. it can.

  As is clear from the above, according to the air conditioner of the present invention, even if there are protrusions in the blowing passage, the air flow in the blowing passage is suppressed from being disturbed, and a stable blown air flow can be obtained. Can be realized.

  Hereinafter, the air conditioner of this invention is demonstrated in detail by embodiment of illustration.

  FIG. 1 shows a perspective view of an air conditioner according to an embodiment of the present invention as seen from an obliquely lower side, and FIG. 2 shows a perspective view of the air conditioner as seen from an obliquely lower side than FIG. Yes. The air conditioner is a wall-mounted type that is attached to a wall surface in a room, but may be another form of air conditioner.

  As shown in FIGS. 1 and 2, the air conditioner includes a front grill 12 that is detachably attached to the front side of the bottom frame 11, and a front panel that is detachably attached to the front side of the front grill 12. 13. The bottom frame 11, the front grill 12 and the front panel 13 constitute a casing 10.

  A horizontally long rectangular outlet 20 provided at the lower front side of the casing 10 supports a first horizontal flap 21 having a blade length that can substantially cover the outlet 20 in a rotatable manner. Further, a second horizontal flap 22 having a blade length shorter than that of the first horizontal flap 21 and at least a part of which overlaps the first horizontal flap 21 is rotated below the outlet 20 of the casing 10 and the first horizontal flap 21. Supports freely. Further, a third horizontal flap 23 is rotatably supported as an example of an airflow stabilizing member on the upper side of the blowout passage 33 from the blower fan 32 (shown in FIG. 4) to the blowout port 20. Here, the “wing length” is the distance between the blades in the wind flow direction.

  1 and 2 show a state during heating operation in which all the first to third horizontal flaps 21 to 23 are rotated downward and the blown airflow is directed downward.

  3 shows a front view of the air conditioner, and FIG. 4 shows a cross-sectional view taken along line IV-IV in FIG. In FIG. 3, the first horizontal flap 21 and the third horizontal flap 23 among the first to third horizontal flaps 21 to 23 can be seen, and the second horizontal flap 22 is hidden behind the first horizontal flap 21 and cannot be seen.

  As shown in FIG. 4, an indoor heat exchanger 31 having a U-shaped cross section is disposed in the casing 10 and on the front side of the bottom frame 11, and a blower fan 32 is disposed below the indoor heat exchanger 31. is doing. The blower fan 32 is a cross flow fan arranged so that the rotation axis is in the horizontal direction. An outlet passage 33 is formed between the blower fan 32 and the outlet 20.

  Further, the first horizontal flap 21 and the second horizontal flap 22 are rotatably supported by one support arm 24 provided in the approximate center of the air outlet 20 of the casing 10. An air passage 34 is provided between the lower edge of the air outlet 20 and the second horizontal flap 22. A third horizontal flap 23 is rotatably supported above the blower outlet 20 and the first horizontal flap 21. By rotating the first horizontal flap 21, the second horizontal flap 22, and the third horizontal flap 23 in the vertical direction, the wind direction of the blown air is controlled in the vertical direction.

  Further, a plurality of vertical flaps 25 are arranged at predetermined intervals in the left-right direction at the air outlet 20 of the casing 10. The plurality of vertical flaps 25 are connected via a drive arm (not shown), and the plurality of vertical flaps 25 are rotated in the left-right direction in accordance with the sliding movement of the drive arm, so that the wind direction of the blown air is changed to the left and right. Control.

  In the air conditioner, when the blower fan 32 is driven by a fan motor (not shown), indoor air is sucked through the suction port 12a on the upper surface side of the front grill 12 and the suction port 13a on the upper end side of the front panel 13. . Then, the sucked room air passes through the indoor heat exchanger 31 and is heat-exchanged, and then blown out from the blower outlet 20 into the room through the blowout passage 33 by the blower fan 32.

  FIG. 5 shows an exploded perspective view of the first to third horizontal flaps 21 to 23 of the air conditioner.

  FIG. 6 shows a front view of the first horizontal flap 21 of the air conditioner. As shown in FIG. 6, the first horizontal flap 21 has a rectangular shape with a long horizontal direction when viewed from the front. In FIG. 6, the lower side of the first horizontal flap 21 is the leeward wing tip, and the upper side is the leeward wing tip. The rotational center of the first horizontal flap 21 is set such that the windward side is above the blade tip (lower side in FIG. 6) and substantially parallel to the blade tip. The first horizontal flap 21 includes a central shaft portion 41 provided substantially at the center, a left shaft portion 42 provided on the left side, and a right bearing portion 43 provided on the right side along the rotation center. I have. Further, on the left side of the central shaft portion 41 of the first horizontal flap 21, a substantially rectangular support arm interference prevention cut-out portion 21 a having an upwind side is provided. On the right side of the central shaft portion 41 of the first horizontal flap 21 is a substantially rectangular second horizontal flap interference prevention which is smaller than the support arm interference prevention cutout portion 21a and is continuous with the support arm interference prevention cutout portion 21a. A notch 21b for use is provided. A substantially rectangular second horizontal flap interference-preventing cutout 21c is provided in the vicinity of the left shaft portion 42 of the first horizontal flap 21, and a substantially rectangular second horizontal flap in the vicinity of the right bearing portion 43 of the first horizontal flap 21. A notch 21d for preventing interference is provided.

  7 is a cross-sectional view of the first horizontal flap 21 as seen from the line VII-VII in FIG. As shown in FIG. 7, the first horizontal flap 21 includes a central shaft portion 41, a left shaft portion 42, and a right bearing portion 43 (only 41 is shown in FIG. 7) on the windward side. A portion 21A and a leeward wing portion 21B bent slightly upward from the leeward wing portion 21A are provided. A plurality of grooves 44 having a V-shaped cross section as an example of irregularities are formed along the longitudinal direction of the first horizontal flap 21 on the lower wing surface of the leeward wing portion 21B. The plurality of grooves 44 have a shallow V-shaped cross section from the leeward side to the leeward side of the blade portion 21B. On the other hand, on the upper blade surface of the leeward wing portion 21B and the upper wing surface of the leeward blade portion 21A, a plurality of grooves 45 having a rectangular cross section as an example of irregularities along the longitudinal direction of the first horizontal flap 21. Is forming. Further, a central shaft portion 41 is provided on an arm 40 that is erected on the upper side of the wing portion 21 </ b> A of the first horizontal flap 21.

  When the first horizontal flap 21 is attached to the air outlet 20, first, while bending the first horizontal flap 21, a drive shaft (not shown) provided on the right side surface of the air outlet 20 is provided on the right bearing portion 43. Further, the left shaft portion 42 is inserted into a bearing portion (not shown) provided on the left side wall of the air outlet 20. Then, the central shaft portion 41 is inserted into the bearing hole 71 (shown in FIG. 17) of the support arm 24, and the attachment of the first horizontal flap 21 is completed.

  The first horizontal flap 21 rotates in the vertical direction as a drive shaft (not shown) provided on the right side surface of the air outlet 20 rotates.

  FIG. 8 shows a front view of the second horizontal flap 22 of the air conditioner.

  As shown in FIG. 8, the second horizontal flap 22 has a rectangular shape with a long horizontal direction when viewed from the front. In FIG. 8, the lower side of the second horizontal flap 22 is the leeward wing tip, and the upper side is the leeward wing tip. The rotation center of the second horizontal flap 22 is set so that the windward side is above the blade tip (lower side in FIG. 8) and is substantially parallel to a straight line along the blade tip. The center of rotation of the second horizontal flap 22 is set so that the windward side is in the vicinity of the blade tip (lower side in FIG. 8) and substantially parallel to the straight line along the blade tip. The second horizontal flap 22 includes a central shaft portion 51 provided substantially at the center, a left shaft portion 52 provided on the left side, and a right bearing portion 53 provided on the right side along the rotation center. I have.

  9 is a cross-sectional view of the second horizontal flap 22 as seen from the line IX-IX in FIG. As shown in FIG. 9, the second horizontal flap 22 has a plurality of grooves 54 having a V-shaped cross section as an example of irregularities along the longitudinal direction of the second horizontal flap 22 on the lower wing surface. On the other hand, on the upper wing surface of the second horizontal flap 22, a plurality of grooves 55 having a rectangular cross section as an example of irregularities are formed along the longitudinal direction of the second horizontal flap 22. Further, a central shaft portion 51 is provided on an arm 50 erected on the upper side of the second horizontal flap 22.

  When the second horizontal flap 22 is attached to the air outlet 20, first, a drive shaft (not shown) provided on the right side surface of the air outlet 20 is inserted into the right bearing portion 53 to blow the left shaft portion 52. The central shaft 51 is inserted into a bearing hole 72 (shown in FIG. 17) of the support arm 24 while being inserted into a bearing (not shown) provided on the left side wall of the outlet 20 and bending the second horizontal flap 22. ) To complete the installation of the second horizontal flap 22.

  The second horizontal flap 22 rotates in the vertical direction when a drive shaft (not shown) provided on the right side surface of the air outlet 20 rotates.

  Further, as shown in FIG. 5, the third horizontal flap 23 is provided with a central shaft portion 61 provided substantially at the center, a left shaft portion 62 provided on the left side, and a right side along the rotation center thereof. Right-side bearing portion 63.

  When the third horizontal flap 23 is attached to the air outlet 20, first, a drive shaft (not shown) provided on the right side surface of the air outlet 20 is inserted into the right bearing portion 63 to blow the left shaft portion 62. It is inserted into a bearing portion (not shown) provided on the left side wall of the outlet 20 and the central shaft portion 61 is provided on the upper side wall of the outlet 20 while bending the third horizontal flap 23 ( And the third horizontal flap 23 is completely attached.

  The third horizontal flap 23 rotates in the vertical direction as a drive shaft (not shown) provided on the right side surface of the air outlet 20 rotates.

  FIG. 10 shows a front view of the air conditioner in a stopped state (a state where the air outlet 20 is closed), and FIG. 11 shows a cross-sectional view taken along line XI-XI in FIG.

  As shown in FIGS. 10 and 11, the first horizontal flap 21 has a blade length that can substantially cover the air outlet 20, and the second horizontal flap 22 has a blade length that is longer than that of the first horizontal flap 21. short. Then, with the blower fan 32 stopped and the blowout port 20 closed with the first horizontal flap 21 and the second horizontal flap 22, the second horizontal flap 22 becomes the first horizontal flap 21 except for a part on the windward side. overlapping. The second horizontal flap 22 overlaps the windward wing portion 21A (shown in FIG. 7) of the first horizontal flap 21, and the lower wing surface and the leeward wing portion 21B (shown in FIG. 7) of the second horizontal flap 22 are overlapped. ) Lower wing surfaces are connected without any steps.

  10 and 11, the third horizontal flap 23 is in a state where the upper wing surface is substantially in contact with the upper wall surface of the blowing passage 33.

  12 shows a front view of the air conditioner during the cooling operation, and FIG. 13 shows a cross-sectional view taken along line XIII-XIII in FIG.

  As shown in FIGS. 12 and 13, during the cooling operation, the first horizontal flap 21 and the second horizontal flap 22 are rotated so as to be substantially horizontal, and the first horizontal flap 21 is moved to the blade surface of the first horizontal flap 21. The blade surfaces of the two horizontal flaps 22 are made substantially parallel. At this time, the first horizontal flap 21 is overlapped with an interval, except for a part of the windward side of the second horizontal flap 22. In the air conditioner, the cold air from the blower fan 32 is blown out from the blower outlet 20 in the substantially horizontal direction through the blowout passage 33 by the first horizontal flap 21 and the second horizontal flap 22.

  12 and 13, the third horizontal flap 23 is in a state in which the upper blade surface is substantially in contact with the upper wall surface of the outlet passage 33.

  At this time, the projection 35 on the upper wall surface of the blowing passage 33 is covered with the recess 23a provided at a position corresponding to the projection 35 of the third horizontal flap 23, and the air flow in the blowing passage 33 is disturbed by the projection 35. Is suppressed.

  On the other hand, FIG. 14 shows a front view of the state where the third horizontal flap 23 is lowered during the heating operation of the air conditioner.

  As shown in FIG. 14, during the heating operation, the first horizontal flap 21 and the second horizontal flap 22 are rotated so as to tilt obliquely downward, and the second horizontal flap with respect to the blade surface of the first horizontal flap 21. The wing surfaces of 22 are made substantially parallel. At this time, the first horizontal flap 21 is overlapped with a gap except for a part of the windward side of the second horizontal flap 22.

  And since the 3rd horizontal flap 23 is rotated so that it may incline inclining downward, and the airflow which flows through the upper side of the blowing passage 33 is directed below by the 3rd horizontal flap 23, warm air from the blower outlet 20 is upward. The warm air can be blown out effectively to the feet without flowing into the feet. At this time, the protrusion 35 is shielded by the recess 23a of the third horizontal flap 23 and does not affect the airflow.

  FIG. 15 is a front view showing a state in which the third horizontal flap 23 is raised during the heating operation of the air conditioner, and is a view for comparison with the state during the heating operation of FIG. In FIG. 15, the same reference numerals are assigned to the same components as those in FIG. 14.

  In the air conditioner shown in FIG. 15, unlike FIG. 14, only the third horizontal flap 23 is in a state in which the upper blade surface is in contact with the upper wall surface of the outlet passage 33 during the heating operation. In such an air conditioner, the airflow flowing on the upper side of the blowout passage 33 flows upward from the blowout port 20, and the heating air cannot be intensively blown to the feet.

  Next, FIG. 16 shows a perspective view of the air conditioner with the first horizontal flap 21 removed, seen obliquely from below, and FIG. 17 is an enlarged view of the main part of the air conditioner shown in FIG. Is shown.

  As shown in FIGS. 16 and 17, bearing holes 71 and 72 are provided in one support arm 24 provided substantially at the center of the air outlet 20 at a distance in the substantially vertical direction of the air outlet 20. A central shaft portion 51 provided substantially at the center of the second horizontal flap 22 is inserted into the bearing hole 72 on the lower side of the support arm 24. Although not shown, the central shaft portion 41 (shown in FIGS. 5 and 6) of the first horizontal flap 21 is inserted into the bearing hole 71 on the upper side of the support arm 24.

  FIG. 18 shows a cross-sectional view of the air conditioner with the first to third horizontal flaps 21 to 23 removed, and the upper end of the support arm 24 is located above the outlet passage 33 as shown in FIG. A fixed base 24a whose lower end is fixed to the lower side of the outlet passage 33; an extending part 24b extending outward from the leeward side of the base part 24a and provided with bearing holes 71, 72; A handle portion 24c extending upward is provided above the portion 24b.

  As shown in FIG. 17, when a person presses the handle portion 24c with a fingertip or the like, for example, in the left direction (arrow R1), the extending portion 24b is centered about the axis O shown in FIG. 17 in the counterclockwise direction (arrow R2). Twist. Here, the axis O is a straight line that passes through an intermediate point between the bearing holes 71 and 72 and passes through the center of the connecting portion between the base 24a and the extending portion 24b.

  Thus, by twisting the support arm 24, the central shaft portion 41 of the first horizontal flap 21 is easily detached from the bearing hole 71 of the support arm 24, and the central shaft portion 51 of the second horizontal flap 22 is easily removed. It cannot be removed from the bearing hole 72 of the support arm 24.

  According to the air conditioner having the above-described configuration, in a state where the blade surface of the second horizontal flap 22 is substantially parallel to the blade surface of the first horizontal flap 21, at least a part of the second horizontal flap 22 is the first horizontal flap. Since the air is guided by the second horizontal flap 22 so as to flow along the lower wing surface of the first horizontal flap 21 by being overlapped with an interval, the first horizontal flap 21 of the first horizontal flap 21 is cooled. Condensation can be prevented. Therefore, without using a heat insulating material or a hollow structure, it is possible to realize prevention of dew condensation of the horizontal flap with a simple configuration and low cost.

  Further, during the cooling operation, the second horizontal flap 22 guides the blown air along the lower wing surface of the first horizontal flap 21 to ensure the dew condensation on the lower wing surface of the first horizontal flap 21 during the cooling operation. Can be prevented.

  Further, by providing the air passage 34 between the lower edge of the air outlet 20 and the second horizontal flap 22, the cold air blown from the air passage 34 flows on the lower wing surface of the second horizontal flap 22 during the cooling operation. The dew condensation on the lower wing surface of the second horizontal flap 22 can be prevented.

  Further, a fulcrum that supports the central shaft portions 41 and 51 of the first horizontal flap 21 and the second horizontal flap 22 is provided on one support arm 24 provided substantially at the center of the air outlet 20. In the configuration provided with a gap in the direction, a support arm interference preventing cutout 21 a is provided in the vicinity of the central shaft portion 41 of the first horizontal flap 21 so that the support arm 24 does not interfere with the first horizontal flap 21. By doing so, the rotation range of the first horizontal flap 21 can be increased.

  In the above embodiment, the central shaft portions 41 and 51 are provided at substantially the center of the first horizontal flap 21 and the second horizontal flap 22, but a central bearing portion may be used instead of the central shaft portion. In this case, the support arm side has a shaft portion inserted into the central bearing portion of the first and second horizontal flaps.

  Further, when the air outlet 20 is closed by the first horizontal flap 21 and the second horizontal flap 22 in a state where the blower fan 32 is stopped, the support arm interference preventing cutout portion 21 a of the first horizontal flap 21 is made the second horizontal flap 22. By covering with, it is possible to prevent intrusion of dust and the like from the support arm interference prevention cutout portion 21a without impairing the aesthetic appearance when the operation is stopped.

  Moreover, by providing the 3rd horizontal flap 23 supported rotatably at the blower outlet 20 of the casing 10 and the 1st horizontal flap 21 at the upper side of the blower passage 32 from the ventilation fan 32 to the blower outlet 20 at the time of heating operation. The air flow flowing on the upper side can be directed downward, and the warm air from the outlet 20 does not flow upward, and the warm air can be effectively blown off at the feet. In addition, although this embodiment demonstrated the air conditioner provided with the 1st-3rd horizontal flaps 21-23, depending on structures, such as a blower outlet of an air conditioner, a 3rd horizontal flap does not need to be.

  Further, during the cooling operation, the second horizontal flap 22 guides the blown air along the lower blade surface of the first horizontal flap 21, and the blown air flows along the tip of the lower blade surface of the first horizontal flap 21. Thus, condensation on the lower blade surface of the first horizontal flap 21 can be prevented during the cooling operation.

  Further, by forming a plurality of grooves 44 having a V-shaped cross section along the longitudinal direction on the lower wing surface of the first horizontal flap 21 to form irregularities, for example, condensation occurs on the lower wing surface of the first horizontal flap 21. However, the condensed water can be retained by the unevenness, and water splash can be prevented.

  Further, by forming a plurality of grooves 54 having a V-shaped cross section along the longitudinal direction on the lower wing surface of the second horizontal flap 22 to form concavity and convexity, for example, condensation occurs on the lower wing surface of the second horizontal flap 22. However, the condensed water can be retained by the unevenness, and water splash can be prevented.

  Further, the plurality of grooves 54 having a V-shaped cross section provided on the lower wing surface of the first horizontal flap 21 are formed on the concave surface on the leeward side where the wind speed becomes slower by reducing the unevenness toward the leeward side of the lower wing surface. Even cold air can be surely delivered. On the other hand, the wind speed becomes slower toward the leeward side of the lower wing surface of the horizontal flap. Note that the unevenness is not limited to the first horizontal flap, but the uneven recess provided on the lower wing surface of the second horizontal flap may be reduced toward the leeward side of the lower wing surface. The uneven dents provided on the lower wing surfaces of the two horizontal flaps may be made smaller toward the leeward side of the lower wing surface.

  Moreover, according to the air conditioner of the said structure, when removing the center axis | shaft part 41 of the 1st horizontal flap 21 from the support arm 24, the fulcrum of the center axis parts 41 and 51 of the 1st, 2nd horizontal flaps 21 and 22 is carried out. Since the support arm 24 is twisted along the lateral direction of the air outlet 20 around the center, the fulcrum of the central shaft portion 51 of the second horizontal flap 22 is in a direction in which the central shaft portion 51 of the second horizontal flap 22 does not come off. Deform. On the other hand, when the central shaft portion 51 of the second horizontal flap 22 is removed from the support arm 24, the lateral direction of the outlet 20 is centered between the fulcrums of the central shaft portions 41, 51 of the first and second horizontal flaps 21, 22. Since the support arm 24 is twisted along the center, the fulcrum of the central shaft portion 41 of the first horizontal flap 21 is deformed in a direction in which the central shaft portion 41 of the first horizontal flap 21 is not removed.

  Therefore, in the air conditioner that supports the central support portion of the two horizontal flaps with the same support arm 24, it is easy for the other horizontal flap to fall off due to the deformation of the support arm 24 when one horizontal flap is attached. It can be prevented by the configuration and workability can be improved.

  Further, by operating the handle portion 24 c provided on the support arm 24, the support arm 24 can be easily twisted in the lateral direction of the air outlet 20.

  Also, second horizontal flap interference prevention cutouts 21b, 21c, 21d are provided at both ends and the center of the first horizontal flap 21 so that the first horizontal flap 21 does not interfere with the second horizontal flap 22. Thus, it is possible to easily attach or remove the second horizontal flap 22 in a state where the first horizontal flap 21 is attached to the air outlet 20, and the workability is further improved.

  Further, by providing a support arm interference prevention notch 21 a in the vicinity of the central shaft portion 41 of the first horizontal flap 21 so that the support arm 24 does not interfere with the first horizontal flap 21, the first horizontal flap is provided. The rotation range of 21 can be enlarged.

  Further, a first horizontal flap 21 having a blade length capable of substantially covering the air outlet 20, and a second horizontal blade having a blade length shorter than that of the first horizontal flap 21 and at least partially overlapping the first horizontal flap 21. In the configuration using the flap 22, it is not easy to bend the first horizontal flap 21 particularly when the first horizontal flap 21 is attached to or removed from the air outlet 20, so it is necessary to deform the support arm 24. is there. In the air conditioner having such a configuration, the same support arm 24 that supports the central shaft portions of the two horizontal flaps is prevented from being deformed when one horizontal flap is attached and the other horizontal flap being dropped off. Is expensive.

  Further, according to the air conditioner having the above-described configuration, the protrusion 35 on the upper wall surface of the blowout passage 33 provided between the blower fan 32 and the blowout port 20 is rotatably supported on the upper side of the blowout passage 33. The projection 35 on the upper side of the blowout passage 33 does not disturb the airflow in the blowout passage 33 by covering with the concave portion 23a at a position corresponding to the projection 35 of the third horizontal flap 23 as the airflow stabilizing member. In the air conditioner that automatically rotates the vertical flap and the air conditioner that manually rotates the vertical flap, the projection 35 on the upper side of the blowing passage 33 is perpendicular to the upper side of the blowing passage in order to serve as a bottom frame. Manufacturing is formed as a part of the structure for manually rotating the flap.

  Therefore, even if the projection 35 is present on the upper side of the blowing passage 33, the air flow in the blowing passage 33 is prevented from being disturbed, and a stable blown air flow is obtained.

  Further, by using the third horizontal flap 23 as the airflow stabilizing member, the airflow in the vertical direction can be controlled.

  Moreover, the convex part formed in the blowing channel | path 33 side of the 3rd horizontal flap 23 becomes a streamline shape by the recessed part 23a of streamline shape, and there is less turbulence of the airflow by the side of the blowing channel | path 33 of the 3rd horizontal flap 23 Become.

  Further, the windward end of the third horizontal flap 23 is rotatably supported on the upper side of the blowout passage 33, so that the airflow stabilizing member can be used as a wind direction control flap for the lower blowout during heating operation. .

  In the said embodiment, it is not a streamline-shaped recessed part, A shape is not restricted to this, What is necessary is just a recessed part of the shape which covers a convex part.

  Moreover, in the said embodiment, although the 3rd horizontal flap 23 as an airflow stabilization member supported the upper blade tip on the upper side of the blowing channel | path 33 so that rotation was possible, not only this but an airflow stabilization member is supported. , May be supported rotatably at the blade tip on the downstream side, or may be supported rotatably at the middle portion of the blade length, and the airflow stabilizing member may be pivoted below the outlet passage You may support. When the airflow stabilizing member is rotatably supported on the lower side of the blowing passage, the protrusion on the wall surface on the lower side of the blowing passage is covered with the concave portion of the airflow stabilizing member.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

FIG. 1 is a perspective view of an air conditioner according to an embodiment of the present invention as viewed obliquely from below. FIG. 2 is a perspective view of the air conditioner as seen from an obliquely lower side than FIG. FIG. 3 is a front view of the air conditioner. FIG. 4 is a cross-sectional view of the air conditioner as viewed from line IV-IV in FIG. FIG. 5 is an exploded perspective view of the first to third horizontal flaps of the air conditioner. FIG. 6 is a front view of the first horizontal flap of the air conditioner. FIG. 7 is a sectional view taken along line VII-VII in FIG. FIG. 8 is a front view of the second horizontal flap of the air conditioner. 9 is a cross-sectional view taken along line IX-IX in FIG. FIG. 10 is a front view of the air conditioner in a stopped state (a state where the air outlet is closed). 11 is a cross-sectional view taken along line XI-XI in FIG. FIG. 12 is a front view of the air conditioner during cooling operation. 13 is a cross-sectional view taken along line XIII-XIII in FIG. FIG. 14 is a front view of a state in which the third horizontal flap is lowered during the heating operation of the air conditioner. FIG. 15 is a front view of a state in which the third horizontal flap is raised during the heating operation of the air conditioner. FIG. 16 is a perspective view of the air conditioner viewed from obliquely below with the first horizontal flap removed. FIG. 17 is an enlarged view of a main part of the air conditioner shown in FIG. FIG. 18 is a cross-sectional view showing a state where the first to third horizontal flaps of the air conditioner are removed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Casing 12a, 13a ... Suction inlet 11 ... Bottom frame 12 ... Front grill 13 ... Front panel 20 ... Outlet 21 ... 1st horizontal flap 21a ... Notch part 21b, 21c, 21d ... 2nd horizontal for prevention of support arm interference Cutout portion 21A for flap interference prevention 21A ... Wing portion 21B ... Wing portion 22 ... Second horizontal flap 23 ... Third horizontal flap 23a ... Recess 24 ... Support arm 24a ... Base portion 24b ... Extending portion 24c ... Handle portion 25 ... Vertical flap 31 ... Indoor heat exchanger 32 ... Blower fan 33 ... Blowing passage 34 ... Air passage 35 ... Protrusion 40 ... Arm 41 ... Central shaft portion 42 ... Left shaft portion 43 ... Right bearing portion 44 ... Groove 45 ... Groove 50 ... Arm 51 ... Center Shaft part 52 ... Left shaft part 53 ... Right bearing part 54 ... Groove 55 ... Groove 61 ... Central shaft part 62 ... Left shaft part 63 ... Right bearing part 71,72 ... Bearing hole

Claims (4)

A casing (10) provided with an inlet (12a, 13a) and an outlet (20);
A heat exchanger (31) disposed in the casing (10);
Arranged on the leeward side of the heat exchanger (31) in the casing (10), air sucked from the suction ports (12a, 13a) through the heat exchanger (31) is blown out (20). A blower fan (32) blowing out from
An outlet passage (33) provided between the blower fan (32) and the outlet (20) and having a protrusion (35) on a wall surface;
An airflow stabilizing member (23) having a recess (23a) that is rotatably supported by the blowing passage (33) and covers the protrusion (35) at a position corresponding to the protrusion (35). A featured air conditioner. In the air conditioner according to claim 1,
The air conditioner characterized in that the airflow stabilizing member (23) is a horizontal flap. In the air conditioner according to claim 1 or 2,
The air conditioner characterized in that the recess (23a) of the airflow stabilization member (23) has a streamline shape. In the air conditioner according to any one of claims 1 to 3,
The air conditioner is characterized in that the airflow stabilizing member (23) is rotatably supported at the windward end by the blowing passage (33).

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