JP2012117805A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner that sufficiently demonstrates changing performance of vertical and horizontal wind directions by extending an area of horizontal wind direction changing blades, and also improves changing performance by blocking hot air blown from an outlet in downward direction by an upper blade, and by preventing hot air fed from right and left ends of the upper blade from leaking upward.SOLUTION: A vertical wind direction changing blade for changing air blown from the outlet of an indoor unit in vertical direction includes an upper blade 20 that is positioned adjacent to an outlet while the air conditioner is stopped. The upper blade 20 has a narrow part 20a located between both sidewalls of the outlet and a wide part 20b that is located on the top of the narrow part 20a during the stoppage of the air conditioner. The width of the narrow part 20a is set smaller than that of the outlet, while the width of the wide part 20b is larger than that of the outlet.

Description

  The present invention relates to an air conditioner in which an indoor unit is provided with a wind direction changing blade that changes the direction of air blown from a blowout port, and performs air conditioning operation by controlling the wind direction changing blade, and in particular, air blown from the blowout port It is related with the shape of the up-and-down wind direction change blade | wing which changes up and down direction.

  A conventional air conditioner is provided with a wind direction changing blade that changes the direction of the air blown from the air outlet of the indoor unit, and the wind direction changing blade changes the direction of the air blown from the air outlet up and down. It is comprised by the up-and-down wind direction change blade | wing to perform, and the left-right wind direction change blade | wing which changes the direction of the air which blows off from a blower outlet right and left.

  The up / down airflow direction changing blade is normally composed of one blade, and when the air conditioner is stopped, the air outlet is covered with the up / down airflow direction changing blade, while the air conditioner is operated, the air outlet is opened and the air blown out from the air outlet The direction of is changed up and down.

  In addition, there is also proposed a configuration in which one up / down wind direction changing blade is divided into three parts and is composed of a left side wind direction adjusting plate, a central wind direction adjusting plate, and a right side wind direction adjusting plate. The reach of the warm air is lengthened by pressing the central wind with the wind adjusted by the wind direction adjustment plate and the right wind direction adjusting plate, and the temperature distribution of the entire room is improved (see, for example, Patent Document 1).

JP-A-5-79690

  However, the horizontal width (width in the left-right direction) is not limited to the width of the blow-out air passage, but also the vertical air-direction changing blade composed of two upper and lower blades. Therefore, there is a problem that sufficient performance for changing the vertical and horizontal wind directions cannot be obtained.

  The same applies to a configuration in which one up-and-down airflow direction change blade is divided into three as described in Patent Document 1.

  The present invention has been made in view of the above-described problems of the prior art, and provides an air conditioner that can fully exhibit the performance of changing the vertical and horizontal wind directions by expanding the area of the vertical wind direction changing blades. The purpose is that.

  In addition to the above-mentioned problems, the present invention also takes into consideration the importance of efficiently heating the vicinity of the indoor unit, and an upper blade is provided above the air outlet, so that the warm air blown from the air outlet is reduced. While pressing down with the upper blade, the change performance is improved by preventing the upward leakage of warm air from the left and right ends of the upper blade.

  In order to achieve the above object, the present invention is an air conditioner in which an indoor unit is provided with a wind direction changing blade for changing the direction of air blown from an outlet, and the air direction operation is performed by controlling the wind direction changing blade. The wind direction changing vane has an up / down air direction changing vane that changes the direction of the air blown out from the air outlet up and down, and the up / down air direction changing vane has an upper blade located near the air outlet when the air conditioner is stopped. The upper blade has a narrow portion located between both side walls of the air outlet and a wide portion located above the air outlet when the air conditioner is stopped, and the width of the narrow portion is defined as the width of the air outlet. While the width is set shorter, the width of the wide portion is set longer than the width of the outlet.

  In addition, when the both side walls of the air outlet are shaped to expand toward the downstream side, the shape is set so that the lateral width of the narrow portion of the upper blade gradually increases toward the downstream side.

  Furthermore, it is preferable to set the width of the wide portion of the upper blade substantially equal to the width of the main body of the indoor unit.

  In addition, the up / down airflow direction changing vane includes a lower vane positioned below the upper vane when the air conditioner is stopped, and the lower vane has a narrow portion positioned between both side walls of the air outlet and a width when the air conditioner is stopped. And the width of the narrow part of the lower blade is set shorter than the width of the outlet, while the width of the wider part of the lower blade is set longer than the width of the outlet. Yes.

  Further, in the case where both side walls of the blowout port are expanded toward the downstream side, the shape is set so that the lateral width of the narrow portion of the lower blade gradually increases toward the downstream side.

  Moreover, it is preferable to set the width of the wide part of the lower blade substantially equal to the width of the main body of the indoor unit.

  Furthermore, a concave portion complementary to the shape of the opposing portion of the lower blade is formed on the outer surface of the narrow portion of the upper blade, and when the air conditioner is stopped, the opposing portion of the lower blade is disposed close to the concave portion of the upper blade. Good.

  According to the present invention, the width of the narrow portion of the upper blade is set shorter than the width of the outlet, and the width of the wide portion of the upper blade is set longer than the width of the outlet, so that it is blown out from the outlet during heating. The left and right ends of the upper blades located on the left and right sides of the air outlet, even if the warm air can be pushed downward by the wide part of the upper blade and blown further left and right from the left and right ends of the air outlet It is possible to prevent leakage upward from the portion, and it is possible to maintain a desired change direction.

  In particular, when the width of the wide portion of the upper blade is set to be approximately equal to the width of the main body of the indoor unit, the appearance of the indoor unit can be improved and the upward leakage of warm air can be effectively prevented.

  Similarly, if the width of the narrow part of the lower blade is set shorter than the width of the outlet, and the width of the wide part of the lower blade is set longer than the width of the outlet, Leakage upward or downward can be prevented, and warm air or cold air constrained in the vertical direction can be blown out from the outlet.

  In addition, a concave portion complementary to the shape of the facing portion of the lower blade is formed on the outer surface of the narrow portion of the upper blade, and when the air blade is stopped, the facing portion of the lower blade is placed close to the recessed portion of the upper blade. The outer surface of the blades and the outer surface of the lower blades are flush with each other, improving the appearance. In addition, by overlapping a part of the upper and lower blades, the length of each blade can be increased, and the change performance in the vertical direction can be improved.

The longitudinal cross-sectional view of the depth direction of the indoor unit which comprises the air conditioner which concerns on this invention Schematic diagram of the indoor unit in FIG. Sectional view along line III-III in FIG. Sectional view along line IV-IV in FIG. 2 is a cross-sectional view taken along line III-III in FIG. 2 when both side walls of the air outlet are expanded toward the downstream side. 2 is a cross-sectional view taken along line IV-IV in FIG. 2 when both side walls of the air outlet are expanded toward the downstream side. Enlarged view of the upper and lower blades when the air conditioner is stopped Schematic diagram of indoor unit during air conditioner operation Schematic of indoor unit when air conditioner is stopped Sectional view along line XX in FIG. Sectional view along line XI-XI in FIG. Graph showing left and right blade left / right change performance Another graph showing left and right blade change performance Enlarged view of the left and right side walls combining multiple straight sections and multiple arc shapes The front view of the indoor unit which has a side wall of FIG. Front view of the indoor unit when the side wall is formed with a single arc shape Front view of the indoor unit when the side wall is formed with one straight line shape

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
An air conditioner used in a general home is composed of an outdoor unit and an indoor unit that are connected to each other through a refrigerant pipe. FIG. 1 shows the indoor unit of the air conditioner according to the present invention.

  The indoor unit has a main body 2 and a movable front panel (hereinafter simply referred to as a front panel) 4 that can freely open and close the front opening 2a of the main body 2. When the air conditioner is stopped, the front panel 4 is the main body. 2 closes the front opening 2a while the front panel 4 moves away from the main body 2 to open the front opening 2a during the operation of the air conditioner. FIG. 1 shows a state in which the front panel 4 closes the front opening 2a.

  Further, inside the main body 2, there are a heat exchanger 6, a fan 8 for exchanging the indoor air taken in from the front opening 2 a and the top opening 2 b with the heat exchanger 6 and blowing it into the room, The air outlet 10 for blowing the exchanged air into the room is opened and closed and the air blowing direction changing blade 12 (hereinafter simply referred to as “upper and lower blade”) for changing the air blowing direction up and down, and the air blowing direction is changed to the right and left. Left and right wind direction changing blades (hereinafter simply referred to as “left and right blades”) 14 are provided, and the front opening 2 a and the upper opening are provided between the front opening 2 a and the upper opening 2 b and the heat exchanger 6. A filter 16 for removing dust contained in the room air taken in from 2b is provided.

  The upper and lower blades 12 are a lower blade 18 that opens and closes the air outlet 10, and an upper blade 20 that is provided above the lower blade 18 and controls the blowing direction of the air blown from the air outlet 10 in cooperation with the lower blade 18. It consists of The lower blade 18 is connected to a drive shaft 22, while the upper blade 20 is connected to a drive shaft 24. The drive shafts 22 and 24 are connected to a drive source (not shown) such as a drive motor.

  As shown in FIGS. 10 and 11, the left and right blades 14 are composed of a pair of blades 14a located on the left side when viewed from the front of the indoor unit and a pair of blades 14b located on the right side. The blades 14a or 14b are composed of a plurality of (for example, four) blades. Each pair of blades 14 a and 14 b is connected to a separate drive source (for example, drive motor) 26, and is independently controlled by the drive source 26.

  When the air conditioner starts operation, the upper and lower blades 12 are controlled to open to open the air outlet 10 and the fan 8 is driven, so that the indoor air passes through the front opening 2a and the upper opening 2b. Is incorporated into the interior. The taken indoor air exchanges heat with the heat exchanger 6, passes through the fan 8, passes through the ventilation path 28 formed on the downstream side of the fan 8, and is blown out from the outlet 10.

  Moreover, the blowing direction of the air from the blower outlet 10 is controlled by the upper and lower blades 12 and the left and right blades 14, and the vertical angle of the upper and lower blades 12 and the angle of the left and right blades 14 are controlled by a remote controller ( Controlled by a remote control device).

  Furthermore, the ventilation path 28 located on the upstream side of the blower outlet 10 includes a rear guider 30 which is a rear wall of the ventilation path 28 located on the downstream side of the fan 8 and a ventilation path located on the downstream side of the fan and facing the rear guider 30. The stabilizer 32 is a front wall of 28 and both side walls 34 (see FIG. 3) of the main body 2.

  The term “stabilizer” described above is located near the downstream of the fan 8 and stabilizes the vortex generated near the front of the fan 8, and is located downstream of the stabilizer and conveyed by the fan 8. Although it can also be divided into the front wall portion of the diffuser responsible for air pressure recovery, these are collectively referred to as “stabilizer” in the present specification.

  Further, although the front panel 4 has been described as movable, it may be fixed.

<Shape of the upper and lower blades 12>
Here, the shape of the upper and lower blades 12 will be described in detail.
2 is a schematic view of the indoor unit shown in FIG. 1, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. It is.

  FIG. 3 is a view of the upper blade 20 viewed from the front of the indoor unit when the lower blade 18 opens the air outlet 10. When the air conditioner is stopped, the upper blade 20 is substantially T-shaped when viewed from the front. Presents.

  That is, the lateral width of the upper blade 20 is not constant, and the narrow portion 20a connected to the drive shaft 24 and located between the side walls 34 (the air outlet 10) of the main body 2 and the narrow portion 20a when the air conditioner is stopped. And a wide portion 20b that is located above and covers the main body 2 above the outlet 10. The lateral width (the length in the left-right direction) of the narrow portion 20 a is set slightly shorter than the lateral width of the outlet 10, and the lateral width of the wide portion 20 b is set longer than the lateral width of the outlet 10.

  Similarly, the lateral width of the lower blade 18 is not constant, and the narrow portion 18a that is connected to the drive shaft 22 and is located between the side walls 34 (the air outlet 10) of the main body 2 and the air outlet 10 when the air conditioner is stopped. And a wide portion 18b for covering. The lateral width (the length in the left-right direction) of the narrow portion 18 a is set slightly shorter than the lateral width of the outlet 10, and the lateral width of the wide portion 18 b is set longer than the lateral width of the outlet 10.

  In FIG. 1 and FIG. 3, the shape is set so that the lower blade 18 covers all of the outlet 10 when the air conditioner is stopped. It is also possible to set the shape so as to cover a part of.

  Here, when the air conditioner is stopped, the front surface of the lower blade 18 and the upper blade 20 in a state where the air outlet 10 is covered with the lower blade 18 and the main body 2 above the air outlet 10 is covered with the upper blade 20 is a “design surface”. When the upper and lower blades 12 are opened during the operation of the air conditioner, the widths of the lower blade 18 and the upper blade 20 (the wide portions 18b and 20b) protruding forward from the design surface are inside the design surface. That is, it is expanded from the width of the part (the narrow portions 18a, 20a).

  By setting in this way, inside the air outlet 10, the blowing air is sandwiched between the upper and lower blades 12 (the lower blade 18 and the upper blade 20) and the left and right side walls 34 and is changed without leaking up and down, left and right, While being blown out from the blower outlet 10, on the outside of the blower outlet 10, the left and right side walls 34 of the blower outlet 10 even if the blown air changed to the left and right is blown further left and right than the left and right ends of the blower outlet 10. The upper and lower and left and right changing directions can be maintained without being diffused by the upper and lower blades 12 extended outward.

  The effect of maintaining the upward / downward changing direction of the blown air is greater as the horizontal width of the upper and lower blades 12 is longer. It is preferable to do this.

  Particularly during heating, the air heated inside the indoor unit tends to rise upward from the outlet 10, but this movement is controlled by the upper blade 20, and the lateral width of the upper blade 20 is further expanded. , Leakage of warm air upward is prevented.

  3 and 4 show a case where the left and right side walls 34 of the air outlet 10 to which the drive shafts 22 and 24 of the upper and lower blades 12 are attached are substantially parallel to each other, as shown in FIGS. 5 and 6. In addition, when the diffuser is formed so that the left and right side walls 34 of the outlet 10 expand linearly or curvedly toward the downstream side, the diffuser of the side wall 34 and the left and right end portions of the upper and lower blades 12 The width of the narrow portion 18a of the lower blade 18 and the width of the narrow portion 20a of the upper blade 20 are gradually set so as to gradually increase toward the downstream side so that the gap therebetween does not widen toward the downstream side.

  By setting the shape in this way, when the blown air changed to the left and right by the left and right blades 14 is blown right and left along the diffuser of the side wall 34, the upper or lower side from the gap between the upper and lower blades 12 and the side wall 34. Leakage can be reduced, and the up / down or left / right change performance can be improved.

  Further, as shown in FIG. 1, when the air conditioner is stopped, the length of the lower blade 18 and the upper blade 20 in the depth direction is increased so that the lower blade 18 and the upper blade 20 partially overlap in the depth direction. By doing so, the upward and downward changing performance can be improved.

  FIG. 7 is an enlarged view of the upper and lower blades 12 when the air conditioner is stopped. As shown in FIG. 7, on the outer surface of the narrow portion 20 a of the upper blade 20, the shape of the facing portion (tip portion) of the lower blade 18 is formed. And the recessed portion 20c having a complementary shape is formed, and when the air conditioner is stopped, the facing portion of the lower blade 18 is disposed close to the recessed portion 20c of the upper blade 20 so that there is no step in the overlapping portion (the design surface is the surface). 1) The appearance of the indoor unit is improved when the air conditioner is stopped.

<Shape of left and right blades 14>
FIG. 8 shows a schematic diagram of the indoor unit during operation of the air conditioner, and FIG. 9 shows a schematic diagram of the indoor unit when the air conditioner is stopped. 10 is a cross-sectional view taken along line XX in FIG. 8, and FIG. 11 is a cross-sectional view taken along line XI-XI in FIG.

  As shown in FIG. 8, the left and right blades 14 are set so that the length in the longitudinal direction is longer than the length of the stabilizer 32, and the blowing air passing through the ventilation path 28 sandwiched between the rear guider 30 and the stabilizer 32 does not leak. It is changed by the left and right blades 14.

  More specifically, in the cross section of FIG. 8, the downstream edge of the stabilizer 32 is A and the upstream edge is A ′ when viewed from the air flow through the ventilation path 28, and the downstream edge. When the distance from the portion A to the upstream edge A ′ is L, the length of the left and right blades 14 along a line passing through the tip B and parallel to the stabilizer 32 when the left and right blades 14 face the front ( Hereinafter, “the length of the left and right blades 14” is simply set to be longer than the length L of the rear guider 30, and as shown in FIG. 8 and FIG. Projects forward.

  That is, as shown in FIG. 1 or FIG. 8, the end edge of the upper blade 20 on the swing fulcrum (drive shaft 24) side is disposed close to the downstream edge A of the stabilizer 32, and the lower blade 18 swings. The end of the moving fulcrum (drive shaft 22) side is located close to the downstream end C of the rear guider 30, and when the two upper and lower blades 12 (the upper blade 20 and the lower blade 18) are opened, By sandwiching the downstream end of the left and right blades 14 in close proximity to the upstream edge, the blowout air passing through the ventilation path 28 sandwiched between the rear guider 30 and the stabilizer 32 is exhausted. It can be passed between the blades 12 and can be changed downward while maintaining the left-right changed state of the blown-out air.

  FIGS. 12 and 13 show the left / right changing performance of the left and right blades 14 and represent the ratio of the left / right changing angle of the blowing air to the changing angle of the left and right blades 14.

  As shown in the graph of FIG. 12, when the length of the left and right blades 14 is L / 3 and L / 2, the left and right changing performance is 30% and 50%, respectively, and when the length of the left and right blades 14 is L, The left / right changing performance is 90%, and it can be seen that it is preferable to set the length of the left and right blades 14 longer than the length L of the rear guider 30. In addition, L 'shown in the graph of FIG. 12 has shown the length of the right-and-left blade | wing 14 extended upstream from the upstream edge part A' of the stabilizer 32 (refer FIG. 8), and the graph of FIG. Even if the left and right blades 14 are extended upstream from the upstream end edge A ′ of the stabilizer 32, the left / right changing performance is not significantly improved.

  Further, in the cross section of FIG. 8, the horizontal axis of the graph of FIG. 13 is such that the left and right blades 14 face the front, with the downstream edge of the rear guider 30 as C as viewed from the air flow through the ventilation path 28. Sometimes, the area of the left and right blades 14 relative to the area of the ventilation path 28 along the blade surface of the left and right blades 14 surrounded by a straight line passing through A and C and a straight line parallel to the straight line passing through A ′ and A and C The ratio (hereinafter simply referred to as “the area ratio of the left and right blades 14”) is shown. When the area ratio of the left and right blades 14 is 20% and 30%, the left and right changing performance is 30% and 50%, respectively. When the area ratio of 14 is 70%, the left / right changing performance is 90%, and it is understood that the area ratio of the left and right blades 14 is preferably set to be larger than 70%.

  In the present embodiment, when determining the shape of the left and right blades 14, the length of the left and right blades 14 in the depth direction is made as long as possible, and a minimum clearance that does not interfere with surrounding members (rear guider 30, stabilizer 32, etc.) is provided. By ensuring, the area ratio of the left and right blades 14 is set larger than 70%.

  In addition, since the front-end | tip part B protrudes ahead from a design surface when the left-right blades 14 face the front, when the upper and lower blades 12 are closed in this state when the operation of the air conditioner is stopped, the upper and lower blades 12 Interferes with the left and right blades 14.

  Therefore, in the present invention, when the operation of the air conditioner is stopped, as shown in FIG. 11, among the left and right blades 14, the left pair of blades 14 a is inclined to the left side, and at the same time, the right pair of blades After tilting 14b to the right (after tilting so that the tips of the two pairs of blades 14a and 14b open), the upper and lower blades 12 and left and right are controlled by closing the air outlet 10 with the upper and lower blades 12. Interference with the blades 14 is avoided.

  In other words, when the air conditioner is in operation, the left and right blades 14 that are long in the flow direction in the ventilation path 28 with the upper and lower blades 12 open freely change the left and right of the blowing air without interfering with the upper and lower blades 12. In addition to being able to improve the right and left wind direction changing performance, when the air conditioner is stopped, the left and right blades 14 are inclined and then the outlet 10 is controlled to be closed by the upper and lower blades 12. The left and right blades 14 can be accommodated in the main body 2.

  In the above embodiment, when the air conditioner is stopped, the left pair of blades 14a is inclined to the left side, and the right pair of blades 14b is inclined to the right side. 14a and 14b may be inclined in the same direction.

  Further, the left and right blades 14 may be constituted by a plurality of blades controlled simultaneously instead of the two sets of blades 14a and 14b that are controlled independently.

<Side wall shape of outlet 10>
The “side wall shape of the air outlet 10” here is a cross section (a cross section substantially perpendicular to the design surface) along the surface of the lower blade 18 in a state where the lower blade 18 is in the most downward direction. The shape of the side wall 34 when viewed from the front means the shape of the left and right side walls 34 in the cross section along the line IV-IV in FIG. 2, and the cross section parallel to the cross section has the same shape. Presents.

  The left and right side walls 34 have a cross-sectional shape that extends outward toward the air outlet 10 in the ventilation path 28, and the cross-sectional shape is a plurality of straight lines toward the air outlet 10 as shown in FIG. 14. The portions 36 and 40 and a plurality of arc shapes 38 and 42 are combined.

  More specifically with reference to FIG. 14, each of the left and right side walls 34 is formed on the immediately downstream side of the fan 8, and a straight portion 36 that is substantially orthogonal to the rotation center axis of the fan 8 and a straight portion that extends outward. An arc part 38 formed on the downstream side of 36 and connected to the straight line part 36; a linear part 40 formed on the downstream side of the arc part 38 so as to spread outward; and a straight part 40 connected to the arc part 38; It has a circular arc part 42 formed on the downstream side and connected to the straight line part 40, and the circular arc part 42 is connected to a straight line part 46 at the lower front of the main body 2.

  As shown in FIG. 16, when the side wall 34 facing the substantially planar left and right blades 14 is formed in one circular arc shape, a local constriction is formed in the ventilation path 28 a between the side wall 34 and the outermost left and right blades 14. The portion 44 is generated, and the width of the ventilation path 28a gradually decreases from the upstream side toward the narrowed portion 44, and further gradually increases from the narrowed portion 44 toward the downstream side, so that the ventilation resistance increases.

  On the other hand, in the shape of FIGS. 14 and 15, when the wind blown from the fan 8 passes through the closed space between the right and left blades 14 inclined to the left and right and the straight portion 40 of the side wall 34, the left and right blades 14 and the side walls are arranged. Since the ventilation path 28a between the left and right blades 34 is not locally narrowed, it is possible to reduce the ventilation resistance of the blown air that has been changed between the left and right blades 14 and the side walls 34.

  Further, as shown in FIG. 17, when the side walls 34 facing the left and right blades 14 are formed in one linear shape, when the blowing air is blown from the air outlet 10 to the open space, the air blown from the air outlet 10 Is peeled off from the wall surface, and the so-called “Coanda effect” in which the flow direction changes along the object cannot be expected.

  On the other hand, in the case of the shape of FIG. 14 and FIG. Since the blown air is blown right and left without peeling from the wall surface, it is possible to generate an air flow along the direction of the left and right walls and enhance the Coanda effect.

  Therefore, the flow of the blown air flowing through the left and right side walls 34 does not weaken in the ventilation path 28a, and further changes greatly to the left and right while maintaining the strength of the flow even after being blown out from the air outlet 10. Will be blown out.

  Further, as shown in FIG. 14, by providing an arc portion 38 spreading outward on the upstream side of the straight portion 40, the direction along the straight portion 40 of the side wall 34 where the wind blown forward from the fan 8 spreads outward is provided. So that the flow between the left and right blades 14 and the straight portion 40 of the side wall 34 is smoother, and the end of the arc portion 42 on the downstream side is substantially in contact with the straight portion 46 on the front surface of the main body 2. By setting the shape, the flow of the blowing air flows along the front surface of the main body 2.

  Here, “substantially contact” means that the distance from the center of curvature of the arc portion 42 to the straight portion 46 is equal to the radius of curvature of the arc portion 42 or slightly smaller than the radius of curvature of the arc portion 42. Means.

  Further, the flow blown out from the outlet 10 into the open space is easily separated from the side wall 34, but the curvature radius (for example, R45) of the arc portion 42 on the downstream side is changed to the curvature radius (for example, R45) of the arc portion 38 on the upstream side. If it is set to be larger than R10), the Coanda effect is improved, and the flow blown out from the blowout port 10 to the open space becomes difficult to peel off from the side wall 34.

  In addition, when the left and right blades 14 are inclined most, the ventilation path 28a between the left and right blades 14 and the straight portion 40 is set so as to be somewhat narrowed toward the downstream side, and narrowed toward the downstream side. The increased flow rate of the blown air is attached to the arc portion 42 and the straight portion 46 by the Coanda effect and further flows along the front surface of the main body 2.

  The air conditioner according to the present invention not only can expand the area of the up / down wind direction changing blades and sufficiently exhibit the ability to change the up / down wind direction and the left / right wind direction, but also has an upper blade provided above the blowout port and blown out from the blowout port. Including the air conditioner that is used in general households, it is possible to improve the performance by pressing down the warm air downward with the upper blade and preventing the upward leakage of the warm air from the left and right ends of the upper blade. It is useful as various air conditioners.

2 indoor unit body, 2a front opening, 2b top opening, 4 front panel,
6 indoor heat exchangers, 8 indoor fans, 10 air outlets, 12 up / down air direction change blades,
14 Left and right wind direction changing blades, 14a Left blade, 14b Right blade,
16 Filter, 18 Lower blade, 18a Narrow part, 18b Wide part,
20 upper blade, 20a narrow part, 20b wide part, 20c concave part,
22 drive shaft, 24 drive shaft, 26 drive source, 28, 28a Ventilation path,
30 rear guider, 32 stabilizer, 34 side wall, 36 straight section,
38 arc part, 40 linear part, 42 arc part, 44 constriction part, 46 linear part.

Claims (7)

An air conditioner for performing an air conditioning operation by controlling the wind direction change blades provided in the indoor unit with a wind direction change blade that changes the direction of the air blown from the outlet,
The wind direction changing vane has an up / down air direction changing vane that changes the direction of the air blown from the air outlet up and down, and the upper / lower air direction changing vane is located near the air outlet when the air conditioner is stopped. Provided with a blade, and the upper blade has a narrow portion located between both side walls of the air outlet, and a wide portion located above the air outlet when the air conditioner is stopped. The air conditioner is characterized in that the lateral width is set shorter than the lateral width of the air outlet, while the lateral width of the wide portion is set longer than the lateral width of the air outlet.   2. The shape according to claim 1, wherein both side walls of the air outlet are widened toward the downstream side, and the lateral width of the narrow portion of the upper blade is gradually increased toward the downstream side. The air conditioner described.   The air conditioner according to claim 1 or 2, wherein a width of the wide portion of the upper blade is set to be substantially equal to a width of a main body of the indoor unit.   The up-and-down wind direction changing blade includes a lower blade positioned below the upper blade when the air conditioner is stopped, and the lower blade is a narrow portion positioned between both side walls of the air outlet, and the air conditioner is stopped. A wide portion located above the narrow portion, and the lateral width of the narrow portion of the lower blade is set shorter than the lateral width of the outlet, while the lateral width of the wide portion of the lower blade is The air conditioner according to any one of claims 1 to 3, wherein the air conditioner is set to be longer than a lateral width of the air outlet.   The side wall of the said blower outlet was expanded toward the downstream side, and the shape setting was carried out so that the lateral width of the said narrow part of the said lower blade might become long gradually toward the downstream side. The air conditioner described.   The air conditioner according to claim 4 or 5, wherein a width of the wide portion of the lower blade is set to be substantially equal to a width of a main body of the indoor unit.   A concave portion complementary to the shape of the opposed portion of the lower blade is formed on the outer surface of the narrow portion of the upper blade, and when the air conditioner is stopped, the opposed portion of the lower blade is brought close to the concave portion of the upper blade. It arrange | positions, The air conditioner of any one of Claim 4 thru | or 6 characterized by the above-mentioned.

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