JP2013011413A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner having upper/lower air-direction-changing vanes which achieves a comfortable space by improving blowing properties when blown wind is sent right and left, thereby making temperature distribution in a room more favorable.SOLUTION: The upper/lower air-direction-changing vanes include an upper vane and a lower vane. The lower vane has: a part whose width is smaller than that of a discharge port; and at ends, parts whose widths are larger than that of the discharge port and which protrude right and left. On the protruding parts, projections are formed which serve as blown wind guides. As a result, the blowing performance is improved when the wind is blown right and left.

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 direction of.

  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 vertical wind direction change blade is normally composed of one blade, and when the air conditioner is stopped, the air outlet is rotated to cover the air outlet with the vertical air direction change blade, so the lateral width is set slightly narrower than the width of the air outlet. During the operation, the air outlet is opened, and the direction of the air blown out from the air outlet is changed up and down. The left and right wind direction change blades are composed of two pairs, one for the left direction and the other for the right direction, in which a plurality of left and right blades are rotatably fixed to the connecting bar at the outlet, and the air blown out by changing the direction of the left and right blades The left and right orientation can be changed.

  In addition, there is a type in which a blowing wind guide is provided in the vertical wind direction changing blade to guide the blowing wind to the outside (see, for example, Patent Documents 1 and 2).

JP-A-6-288605 JP 2006-177603 A

  However, in the conventional configuration, since the blowout air guide provided on the up / down airflow direction changing blade is in front of the air outlet, the effect is obtained when the angle of the left / right airflow direction changing blade is the same as the angle of the blowout air guide. However, when the angles do not match, there is a problem that the blowing air is hindered and the right and left wind direction changing performance cannot be obtained sufficiently.

  The present invention has been made in view of such problems of the prior art, and the upper and lower airflow direction changing vanes are configured by upper and lower vanes, and the lower vanes are at a portion narrower than the width of the outlet and at the end portions. An object of the present invention is to provide an air conditioner in which a portion wider than the width of the outlet is protruded to the left and right, and a blowing air guide is formed in the protruding portion to sufficiently exhibit the ability to change the left and right air directions.

  In order to achieve the above object, the present invention provides an indoor unit with an up / down air direction changing blade having an upper blade and a lower blade that changes the direction of the air blown out from the air outlet up and down, and the air direction left and right. A right and left wind direction changing blade, a narrow portion located between both side walls of the outlet, and a wide portion located in front of the narrow portion in the vicinity of both ends of the vertical wind direction changing blade, An air conditioner in which the width of the narrow portion is shorter than the minimum width of the air outlet and the width of the wide portion is longer than the width of the air outlet, and a protrusion is provided on the wide portion of the lower blade. It is.

In addition, the indoor unit includes an up / down air direction changing blade having an upper blade and a lower blade that changes the direction of the air blown from the air outlet, and a left / right air direction changing blade that changes the air direction to the left and right. The upper blade and the lower blade each have a narrow portion located between both side walls of the outlet, and a wide portion located in front of the narrow portion, and at least the lower blade includes the The lower blade has a portion where the width gradually increases from the narrow portion toward the wide portion, the lateral width of the wide portion is longer than the lateral width of the outlet, and the width from the narrow portion of the lower blade toward the wide portion. The projection is provided.

  Further, the upstream end of the protrusion is on the downstream side of the minimum width portion of the side wall of the air outlet, and the downstream end is closer to both ends of the air outlet than the upstream end.

  Furthermore, the arc is smoothly drawn from the upstream end to the downstream end of the protrusion.

  The interval between the two protrusions is set so as to gradually increase from the upstream end toward the downstream end.

  Further, the surface of the protrusion on the air passage side is set to have a gradually larger slope from the upstream end toward the downstream end.

  According to the present invention, two protrusions are provided from the upstream side to the downstream side at the left and right two positions which are set to be longer than the minimum lateral width of the air outlet at the wide part of the lower blade and protrude from the narrow part. As a result, the blowing angle is changed by the left and right blades, and as the distance from the left and right blades increases, the air that moves forward can be guided to the outside, and the air can be blown out in a desired direction.

  Similarly, the left and right blades can be used to adjust the blowing angle by providing two protrusions with the upstream blade at the position where the width gradually changes from the narrow portion to the wide portion of the lower blade, and the downstream end at the wide portion. As it is changed, the air which is going to move forward as it moves away from the left and right blades can be guided to the outside and the air can be blown out in a desired direction.

  In addition, the upstream end of the protrusion is on the downstream side of the side wall with the minimum width of the outlet, and the downstream end of the protrusion is closer to both ends of the outlet than the upstream end, thereby the right and left wind direction changing blades Even when the angle of the two and the angle of the two protrusions do not match, it does not hinder the blowing air.

  In addition, the protrusions bulge forward from the upstream end toward the downstream end and smoothly draw an arc, and the interval between the two protrusions is set to gradually increase from the upstream end toward the downstream end. In addition, the surface on the air passage side of the projection is set so that the inclination gradually increases from the upstream end toward the downstream end, thereby suppressing the vortex shedding in the process of the blown wind from the upstream end toward the downstream end. Generation can be suppressed.

External view of an indoor unit constituting the air conditioner according to the present invention and an enlarged view of a protrusion installation portion Cross section of the indoor unit of FIG. FIG. 2 is a partial cross-sectional view taken along line AA in FIG. Plan view of lower blade according to the present invention Sectional view of the lower blade along line BB in FIG. Sectional view of the lower blade along line CC in FIG. Partial sectional view along line AA in FIG.

  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 indoor unit and an outdoor unit that are usually connected to each other by refrigerant piping, and FIG. 1 shows the indoor unit of the air conditioner according to the present invention.

  In the indoor unit 1, an exterior and a housing are configured by a frame 2 for attaching to a wall, a front grill 3, and a front panel 4 attached to the front grill 3.

  In the interior of the indoor unit 1, the indoor air taken in from the upper surface opening 3 a and the front opening 3 b is heat-exchanged by the heat exchanger 5 and blown out into the room, and the heat-exchanged air is transferred into the room The upper surface opening 3a is opened and closed between the upper blade 8 and the lower blade 9, and the upper surface opening 3a, the front surface opening 3b, and the heat exchanger 5 that open and close the air outlet 7 that blows out the air and changes the air blowing direction up and down. And the filter 11 for removing the dust contained in the indoor air taken in from the front opening part 3b is provided.

  The outlet of the ventilation path 15 in which the rear case 2a of the underframe 2 is the bottom surface, the stabilizer 12a of the outlet grill 12 is the ceiling surface, and the side walls 12b of the outlet grill 12 are both sides is called the outlet 7. In the connected left and right blades 10, a pair of left blades 10 a located on the left side when viewed from the front of the indoor unit 1 and a pair of right blades 10 b located on the right side are arranged in the ventilation path 15, and the air blowing direction Can be changed to left or right.

  When the air conditioner starts operation, the upper blade 8 and the lower blade 9 are controlled to open, the air outlet 7 is opened, and the fan 6 is driven so that the room air passes through the front opening 3b and the upper opening 3a. Through the interior of the indoor unit 1. The taken-in room air exchanges heat with the heat exchanger 5, passes through the fan 6, passes through the ventilation path 15 formed on the downstream side of the fan 6, and is blown out from the outlet 7.

  The term “stabilizer” described above is located near the downstream of the fan 6, stabilizes the vortex generated near the front of the fan 6, and is located downstream of the stabilizer and conveyed by the fan 6. 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.

  Here, the shape of the lower blade 9 will be described in detail.

  FIG. 3 is a sectional view taken along line AA of the indoor unit shown in FIG.

  The lower blade 9 has a drive shaft 9 a rotatably supported on both side walls 12 b of the blow grill 12 and is rotated by a drive motor (not shown) provided outside the blow grill 12.

  The width of the lower blade 9 is not constant, and the narrow grill 9b located between the side walls 12b of the blow grill 12 and the front grill on both sides of the blow outlet 7 located above the narrow blank 9b when the air conditioner is stopped. And a wide portion 9 c covering 3. The lateral width (the length in the left-right direction) of the narrow portion 9b is set slightly shorter than the lateral width of the air outlet 7, and the lateral width of the wide portion 9c is set longer than the lateral width of the air outlet 7.

  Similarly, the lateral width of the upper blade 8 is not constant, is connected to the drive shaft 8a (see FIG. 1), is rotatably supported on both side walls 12b of the blowing grill 12, and is positioned between both side walls 12b of the blowing grill 12. A narrow portion 8b and a wide portion 8c that is located above the narrow portion 8b and covers the front grille 3 on both sides and above the air outlet 7 when the air conditioner is stopped are provided. The lateral width (length in the left-right direction) of the narrow portion 8 b is set slightly shorter than the lateral width of the blowout port 7, and the lateral width of the wide portion 8 c is set longer than the lateral width of the blowout port 7.

  By setting in this way, on the upstream side of the blowout port 7, the blown air is sandwiched between the lower blade 9, the upper blade 8, and the left and right side walls 12 b and is changed without leaking up and down and left and right. On the other hand, on the outside (downstream side) of the air outlet 7, the left and right side walls 12 b of the air outlet 7 are left and right 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 air outlet 7. The upper and lower and left and right changing directions can be maintained without being diffused by the lower blade 9 and the upper blade 8 that protrude outward.

  The effect of maintaining the upward / downward and left / right changing directions of the blowing air is greater as the width of the upper blade 8 and the lower blade 9 is longer. However, considering the design of the indoor unit, the width of the wide portions 8c and 9c is It is set to be approximately equal to the body width of 1.

  As shown in FIG. 3, when the lower blade 9 is closed at two left and right positions which are set longer than the minimum width of the outlet 7 at the wide portion 9 c of the lower blade 9 and protrude from the narrow portion 9 b, the indoor unit 1 Two projections A16 and B17 extending from the upstream side toward the downstream side and the outside are provided on the surface that cannot be seen from the front side.

  The protrusion A16 and the protrusion B17 have a smooth arc shape that bulges forward from the upstream ends 16a and 17a toward the downstream ends 16b and 17b.

  In addition, the tangent line a and the tangent line b that are in contact with the arcs of the upstream ends 16a and 17a set the angles of the protrusions A16 and B17 so that they are substantially equal to the angle when the left and right blades 10 are tilted to the right. .

  Further, the upstream end 16 a of the protrusion A 16 starts from the outside of the side wall 12 b of the blowing grill 12.

  FIG. 3 shows a case where the left and right blades 10 which are left and right changing blades are set to the left blowing and the right blade 10b are set to the left blowing and the right blowing, and the enlarged view of FIG. is there. The flow of air when the right and left blowing direction is set to the right side will be described with reference to this enlarged view.

  First, considering the case where the protrusions A16 and B17 are not arranged, the path of the air sent out by the fan 6 is changed to the right as shown by the arrow C by the left and right blades 10 whose angles are set to the right. The The angle of the air changed by the left and right blades 10 is smaller than the angle of the left and right blades 10 because the force by which the main flow of air moves forward is large. That is, even if the desired change angle of air is the same as the inclination angle of the left and right blades 10, the desired change angle cannot be obtained. Further, it is conceivable to increase the inclination angle of the left and right blades 10, but if it is increased, there is a limit that can be increased from the viewpoint of performance such as increased resistance when air is sent out and condensation during cooling operation. .

  Next, the case where the protrusion A16 and the protrusion B17 are arranged will be described. The upstream ends of the protrusions A16 and B17 are in the mainstream (arrow C) whose angle is changed by the left and right blades 10, and part of the blown air is guided to the right by the protrusions A16 and B17. The angle is changed in the direction (arrow d). The entrance angles of the upstream ends of the protrusions A16 and B17 are set to be approximately equal to the maximum inclination angle of the left and right blades 10, and air can easily follow the protrusions A16 and B17. In addition, a smooth arc is drawn from the upstream end toward the downstream end, the angle of the air path can be changed outward, and the change angle of air that cannot be obtained by the left and right blades 10 alone can be compensated.

In addition, since the upstream ends of the protrusion A16 and the protrusion B17 are set outside the side wall 12b of the outlet grill 12 (outside the outlet 7), the blowing direction is the front or the protrusion A16 and the protrusion B17. Even if the direction is opposite to the inclination, the air does not hit the protrusions A16 and B17, so that air resistance does not occur.

  Next, the shape of the protrusion A16 and the protrusion B17 will be described with reference to FIGS. The distance between the protrusion A16 and the protrusion B17 gradually increases from the upstream end toward the downstream end. The relationship between L1 and L2 shown in FIGS. 5 and 6 is set to L1 <L2. Further, the surfaces of the protrusion A16 and the protrusion B17 on the outlet 7 side are gradually increased in inclination from the upstream end toward the downstream end. The relationship between θ1 and θ2 shown in FIGS. 5 and 6 is set to θ1 <θ2. As a result, vortex shedding can be suppressed and the generation of noise can be suppressed in the process in which the blown air flows from the upstream end to the downstream end.

  Furthermore, by providing a slope and gradually increasing the slope, air helps to bend the direction of the air along the slope.

  Next, a measure for changing the angle of air will be described with reference to FIG. A slope 12c is provided at the outlet portion of the side wall 12b of the blowing grill 12, and is smoothly connected to the side wall 12b. On the other hand, the lower blade 9 has a narrow width portion 9b located between both side walls 12b of the blowout port 7, a wide portion 9c in front of the blowout port 7, and a width gradually from the narrow portion 9b toward the wide portion 9c. It consists of a triangular area (enlarged portion) 9d that expands, and the upstream ends of the protrusions A16 and B17 are in this triangular area 9d.

  By providing the inclined surface 12c at the outlet portion of the side wall 12b of the blowing grill 12, the blowing air (arrow e) is blown along the inclined surface 12c, and the blowing angle becomes larger than when there is no inclined surface 12c. As a result, the positions at which the protrusions A16 and B17 are arranged can be brought closer to the outlet 7 side, and the blowing air (arrow f) can be bent from a position closer to the outlet 7, resulting in a more effective blowing angle. It can be enlarged.

  In the air conditioner according to the present invention, the upper and lower airflow direction changing blades are composed of upper blades and lower blades, and the lower blades project a portion narrower than the width of the air outlet and a portion wider than the width of the air outlet at the end, A blowing air guide is formed in the protruding portion to improve the performance of changing the vertical and horizontal air directions, and is useful as various air conditioners including air conditioners and air purifiers used in general households.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Underframe 2a Rear case 3 Front grille 3a Top opening 3b Front opening 4 Front panel 5 Heat exchanger 6 Fan 7 Outlet 8 Upper blade 8a Drive shaft 8b Narrow part 8c Wide part 9 Lower blade 9a Drive Shaft 9b Narrow part 9c Wide part 9d Triangular area 10 Left and right blades 10a Left blade 10b Right blade 11 Filter 12 Blowing grill 12a Stabilizer 12b Side wall 12c Slope 13 Connecting bar 15 Ventilation path 16 Protrusion A
16a Upstream end 16b Downstream end 17 Projection B

Claims (6)

The indoor unit is provided with an up / down air direction changing blade having an upper blade and a lower blade that changes the direction of the air blown out from the air outlet, and a left / right air direction changing blade that changes the air direction to the left and right, The up-and-down wind direction changing blade has a narrow portion located between both side walls of the air outlet, and a wide portion located in front of the narrow portion, and the lateral width of the narrow portion is the minimum of the air outlet. An air conditioner that is shorter than the width and the width of the wide portion is longer than the width of the blower outlet, and at least the lower blade of the upper blade and the lower blade is near both ends of the wide portion from the upstream side. An air conditioner provided with a protrusion extending downstream and outward. The indoor unit is provided with an up / down air direction changing blade having an upper blade and a lower blade that changes the direction of the air blown out from the air outlet, and a left / right air direction changing blade that changes the air direction to the left and right, The up-and-down wind direction changing blade has a narrow portion located between both side walls of the air outlet, and a wide portion located in front of the narrow portion, and the lateral width of the narrow portion is the minimum of the air outlet. It is an air conditioner that is shorter than the width and the width of the wide portion is longer than the width of the blower outlet, and at least the lower blade of the upper blade and the lower blade is directed from the narrow portion toward the wide portion. It has an enlarged portion whose width gradually increases, and has a protruding portion extending from the upstream side toward the downstream side and the outside from the enlarged portion to the wide portion in the vicinity of both ends of the lower blade. Air conditioner to do. The upstream end of the projection is downstream of the minimum width portion of the side wall of the outlet, and the downstream end of the projection is closer to both ends of the outlet than the upstream end. The air conditioner according to claim 1 or 2. 3. The air conditioner according to claim 1, wherein the air conditioner has a bulge forward from the upstream end to the downstream end of the projection and smoothly draws an arc. 4. The protrusion is formed of two protrusions, an inner protrusion and an outer protrusion, so that the distance between the inner protrusion and the outer protrusion gradually increases from the upstream end toward the downstream end. The air conditioner according to any one of claims 1 to 4, wherein the air conditioner is disposed in the air conditioner. The longitudinal surface on the outlet side of the protrusion is set so that the inclination gradually increases with respect to the surface of the up / down airflow direction changing blade from the upstream end toward the downstream end. The air conditioner in any one of 1-5.