EP3730859A1

EP3730859A1 - Blowout panel and air conditioning indoor unit

Info

Publication number: EP3730859A1
Application number: EP18890942.8A
Authority: EP
Inventors: Shengfei YU; Shunbo YANG; Di WANG
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2017-12-22
Filing date: 2018-12-06
Publication date: 2020-10-28
Anticipated expiration: 2038-12-06
Also published as: EP3730859A4; JP6756410B2; WO2019124097A1; EP3730859B1; JPWO2019124097A1

Abstract

The present invention is to provide a blow-out panel and an air conditioning indoor unit that includes the blow-out panel that can blow out air 360° all around and that blows out air from a blow-out port uniformly. The blow-out panel (20) has an outer frame (21), an inner frame (22), and a connecting rod (24). A polygonal blow-out port (CF) is formed by being surrounded by the outer frame and the inner frame. A connecting rod is provided at a corner of the blow-out port and connects the outer frame and the inner frame. The connecting rod has a connecting rod body (241A) and a connecting portion (242A). The connecting portion is closer to a center of the blow-out panel than the connecting rod body, and connects the connecting rod body to the inner frame. The connecting portion and the connecting rod body each have a first surface and a second surface. As viewed from the inner surface side to the outer surface side of the blow-out panel, the first surface is disposed downstream of the second surface in the clockwise direction around the center of the blow-out panel. The second surface of the connecting portion and the second surface of the connecting rod body are combined to form an inwardly concave shape.

Description

TECHNICAL FIELD

The present invention relates to a blow-out panel and an air conditioning indoor unit including the blow-out panel.

BACKGROUND ART

Conventionally, there has been an air conditioning indoor unit having an indoor unit body and a blow-out panel. In the indoor unit body, an axial fan in which an axis vertically extends is provided. The blow-out panel is provided in a lower part of the indoor unit body and has a blow-out port. An air guide fin is provided in the blow-out port.
In the above air conditioning indoor unit, in order to increase a blow-out area of the blow-out port, and in consideration of layout convenience, it is conceivable to adopt the blow-out panel having a rectangular outer frame, a rectangular inner frame, and a rectangular blow-out port formed by being surrounded by the outer frame and the inner frame.
However, in the above case, an airflow generated by the axial fan is less likely to travel to a corner of the blow-out port, and thus the air is likely to be blown out of the blow-out port ununiformly.
Further, there is a conventional air treatment device in which a blower tube is connected to a rectangular blow-out panel, and a spiral airflow sent from a blower unit of the air treatment device is sent to a blow-out panel via the blower tube. Even in such a case, the spiral airflow is less likely to travel to the corner of the blow-out panel, and thus the air is likely to be blown out of the blow-out port ununiformly.

SUMMARY OF THE INVENTION

In view of the above problems, an object is to provide a blow-out panel and an air conditioning indoor unit that includes the blow-out panel that can blow out air 360° all around and blow out air from a blow-out port uniformly.
In order to solve the above technical problems, a blow-out panel has an outer frame, an inner frame, and a connecting rod. A polygonal blow-out port is formed by being surrounded by the outer frame and the inner frame. A connecting rod is provided at a corner of the blow-out port. The connecting rod connects the outer frame and the inner frame. The connecting rod has a connecting rod body and a connecting portion. The connecting portion is closer to a center of the blow-out panel than the connecting rod body, and connects the connecting rod body to the inner frame. The connecting portion and the connecting rod body each have a first surface and a second surface. As viewed from an inner surface side to an outer surface side of the blow-out panel, the first surface is disposed downstream of the second surface in a clockwise direction around the center of the blow-out panel. The second surface of the connecting portion and the second surface of the connecting rod body are combined to form an inwardly concave shape.
Here, a so-called "outer surface of the blow-out panel" is a surface that faces a user when the blow-out panel is installed in a room or the like, and an "inner surface of the blow-out panel" is a surface opposite to the "outer surface of the blow-out panel".
The blow-out panel having the above-described structure utilizes the polygonal blow-out port formed by being surrounded by the outer frame and the inner frame. As a result, the blow-out panel which is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan can blow out the air all around 360°. Further, the blow-out panel has a connecting rod provided at a corner of the blow-out port. The second surface of the connecting portion of the connecting rod and the second surface of the connecting rod body are combined to form an inwardly concave shape as viewed from the inner surface side to the outer surface side of the blow-out panel. Thus, when the blow-out panel is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, the second surface of the connecting portion of the connecting rod is used to easily guide an airflow generated by the axial fan or the like to the corner of the blow-out port via the second surface of the connecting rod body. This allows the air to be blown out of the blow-out port uniformly.
An alternative configuration is as follows. As viewed from an inner surface side to an outer surface side of the blow-out panel, the first surface is disposed downstream of the second surface in a counterclockwise direction around the center of the blow-out panel. The second surface of the connecting portion and the second surface of the connecting rod body are combined to form an inwardly concave shape. For example, when the blow-out panel is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, a spiral airflow generated by the axial fan flows counterclockwise around the center of the blow-out panel as viewed from the inner surface side to the outer surface side of the blow-out panel. The second surface of the connecting portion of the connecting rod and the second surface of the connecting rod body are combined to form an inwardly concave shape. Thus, when the blow-out panel is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, the second surface of the connecting portion of the connecting rod is used to easily guide the airflow generated by the axial fan or the like to the corner of the blow-out port via the second surface of the connecting rod body. This allows the air to be blown out of the blow-out port uniformly.
On the blow-out panel, the second surface of the connecting portion and the second surface of the connecting rod body preferably form an obtuse angle.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, a loss of airflow caused by a change of direction is reduced. The airflow generated by the axial fan or the like can be therefore guided to the corner of the blow-out port by the second surface of the connecting portion of the connecting rod. Further, this can reduce the interference of the connecting portion of the connecting rod and the connecting rod body with the airflow generated by the axial fan, causes no turbulent blow at the obtuse angle, and thus allows the air to be blown out of the blow-out port uniformly.
The blow-out panel having the above structure can adopt the following structure. The connecting rod includes a first connecting rod and a second connecting rod provided on one side of the blow-out port. As viewed from the inner surface side to the outer surface side of the blow-out panel, the first surface is disposed downstream of the second surface in the clockwise direction around the center of the blow-out panel. The second connecting rod is disposed downstream of the first connecting rod in the clockwise direction. The blow-out panel having the above structure can further adopt the following structure. On the first connecting rod, the angle formed between the second surface of the connecting portion and the second surface of the connecting rod body is 166° or more and 174° or less. And/or on the second connecting rod, the angle formed between the second surface of the connecting portion and the second surface of the connecting rod body is 164° or more and 176° or less. In such a situation, the following structure can be further adopted. On the first connecting rod, the angle formed between the second surface and the first surface of the connecting portion is more than 0° and less than 10°. And/or on the second connecting rod, the angle formed between the second surface and the first surface of the connecting portion is more than 0° and less than 10°.
Similarly, as viewed from the inner surface side to the outer surface side of the blow-out panel, when the spiral airflow generated by the axial fan flows counterclockwise around the center of the blow-out panel, the first surface is disposed downstream of the second surface in the counterclockwise direction around the center of the blow-out panel. The second connecting rod is disposed downstream of the first connecting rod in the counterclockwise direction.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, a loss of airflow caused by a change of direction is reduced. The airflow generated by the axial fan or the like can be therefore guided to the corner of the blow-out port by the second surface of the connecting portion of the connecting rod. Further, this can reduce the interference of the connecting portion of the connecting rod and the connecting rod body with the airflow generated by the axial fan and allows the air to be blown out of the blow-out port more uniformly. In addition, the air can be blown out all around 360° of the blow-out panel.
The blow-out panel having the above structure can further adopt the following structure. The first connecting rod and the second connecting rod on both sides of one corner of the blow-out port are formed such that the connecting rod body of the first connecting rod and the connecting rod body of the second connecting rod are parallel to each other.
The blow-out panel having the above structure can simplify the entire structure of the blow-out panel. Further, when the blow-out panel is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, it is possible to reduce the interference of the connecting rod body of the connecting rod with the airflow at the corner of the blow-out port, and to allow the air to be blown out of the blow-out port uniformly.
On the blow-out panel, the end of the connecting portion away from the connecting rod body preferably has an arch shape as viewed from the inner surface side to the outer surface side of the blow-out panel.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, the end of the connecting portion of the connecting rod away from the connecting rod body can reduce the interference of the airflow generated by the axial fan or the like, and the arch shape of the end is used to guide the airflow generated by the axial fan or the like to the blow-out port. This allows the air to be blown out of the blow-out port uniformly.
On the blow-out panel, a width of the connecting portion is preferably gradually narrowed toward the connecting rod body as viewed from the inner surface side to the outer surface side of the blow-out panel.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, a strength of the entire connecting rod can be ensured and a volume of the connecting rod can be reduced. It is therefore possible to reduce the interference of the connecting portion of the connecting rod with the airflow generated by the axial fan or the like and to allow the air to be blown out of the blow-out port uniformly.
On the blow-out panel, the connecting rod is preferably formed to extend from the center toward the corner of the blow-out port as viewed from the inner surface side to the outer surface side of the blow-out panel.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, the airflow generated by the axial fan or the like can be guided to the corner of the blow-out port and the airflow also blows out from the corner of the blow-out port. This allows the air to be blown out all around 360° of the blow-out panel and allows the air to be blown out of the blow uniformly.
On the blow-out panel, the width of the connecting portion is preferably equal to or wider than a width of the connecting rod body as viewed from the inner surface side to the outer surface side of the blow-out panel.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, the strength of the connecting portion is ensured and the interference of the connecting rod body to the airflow generated by the axial fan or the like. This allows the air to be blown out of the blow-out port uniformly.
On the blow-out panel, the blow-out panel preferably further has an air guide fin provided at the blow-out port. The air guide fin is rotatably arranged on the connecting rod body.
The blow-out panel having the above structure can control a direction of the airflow blown out of the blow-out port by using the air guide fin.
On the blow-out panel, a rotating shaft of the air guide fin is preferably connected to the connecting rod body in parallel to the air guide fin.
The blow-out panel having the above structure enables the air guide fin to be connected to the connecting rod with a simple structure.
The blow-out panel having the above structure can adopt the following structure. A boundary between the connecting portion and the connecting rod body is disposed between the inner frame and the rotating shaft.
The blow-out panel having the above structure can simplify the structure of the connecting rod and avoid interference with the connecting rod when the air guide fin rotates.
On the blow-out panel, the blow-out panel is preferably further provided with an intermediate connecting rod. The intermediate connecting rod connects the outer frame to the inner frame. The intermediate connecting rod is disposed in a middle of the blow-out port and is perpendicular to the air guide fin as viewed from the inner surface side to the outer surface side of the blow-out panel. A step motor that drives and rotates the air guide fin is attached to the intermediate connecting rod.
The blow-out panel having the above structure can balance a force received by the air guide fin and simplify a drive structure.
On the blow-out panel, the inner frame is preferably provided with a central member. The central member is provided with an air guide piece.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, the air guide piece is used to guide the airflow generated by the axial fan or the like and prevent the airflow from blowing straight downward. This allows the air to be blow out of the blow-out port more uniformly.
The blow-out panel can adopt the following structure. An intake end of the air guide piece is disposed on an extension line of the first surface of the connecting rod body.
The blow-out panel having the above structure ensures more airflow flowing to the corner of the blow-out port and allows the air to be blown out of the blow-out port uniformly.
The above blow-out panel can adopt the following structure. At least a part of the central member projects from the blow-out panel in a thickness direction of the blow-out panel.
When the blow-out panel having the above structure is used, for example, in an air conditioning indoor unit including an indoor unit body provided with an axial fan, an effect that the air guide piece guides the airflow blown out from the axial fan or the like can be improved.
The above blow-out panel can further adopt the following structure. The connecting rod is disposed at a center of the air guide piece in the thickness direction of the blow-out panel.
The blow-out panel having the above structure strengthens an interaction between the air guide piece and the connecting rod, ensures the airflow flowing to the corner of the blow-out port, and allows the air to be blown out of the blow-out port uniformly.
The above blow-out panel can further adopt the following structure. The connecting portion has a first portion extending in a direction along the connecting rod body and a second portion connecting the first portion to the inner frame. An end surface of the second portion away from a central direction of the blow-out panel is a beveled surface extending toward the corner of the blow-out port.
The blow-out panel having the above structure further ensures the airflow flowing to the corner of the blow-out port and allows the air to be blown out of the blow-out port uniformly.
In order to solve the above technical problems, an air conditioning indoor unit has an indoor unit body and the above blow-out panel. The blow-out panel is provided at a lower part of the indoor unit body, or is connected to the indoor unit body via a blower tube.
The air conditioning indoor unit having the above structure can further adopt the following structure. An axial fan is provided in the indoor unit body. The center of the axial fan and the center of the blow-out panel overlap as viewed along the thickness direction of the blow-out panel. The inner frame is provided with the central member, and the center member is provided with the air guide piece. The airflow blown out from the axial fan flows to the connecting portion of the connecting rod via the air guide piece. Specifically, the air guide piece has a first surface and a second surface. The first surface is disposed downstream of the second surface in the clockwise direction as viewed from the inner surface side to the outer surface side of the blow-out panel. The airflow blown out from the axial fan blows to the connecting portion of the connecting rod via the second surface of the air guide piece.
Similarly, when the spiral airflow generated by the axial fan flows around the center of the blow-out panel in the counterclockwise direction, the first surface of the air guide piece is disposed downstream of the second surface in the counterclockwise direction.

With the blow-out panel and the air conditioning indoor unit described above, the blow-out panel uses the polygonal blow-out port formed by being surrounded by the outer frame and the inner frame. This allows the air to be blown out all around 360°. Further, the blow-out panel has a connecting rod provided at the corner of the blow-out port, and the second surface of the connecting portion of the connecting rod and the second surface of the connecting rod body are combined to form an inwardly concave shape as viewed from the inner surface side to the outer surface side of the blow-out panel. Thus, the second surface of the connecting portion of the connecting rod is used to easily guide a spiral airflow generated by the axial fan or the like to the corner of the blow-out port via the second surface of the connecting rod body. This allows the air to be blown out of the blow-out port uniformly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional side view schematically showing an overall structure of an air conditioning indoor unit.
FIG. 2 is a plan view schematically showing the air conditioning indoor unit.
FIG. 3 is a plan view schematically showing a structure of a part of a blow-out panel of the air conditioning indoor unit.
FIG. 4 is a perspective view schematically showing a structure of a part of the blow-out panel of the air conditioning indoor unit. However, an air guide fin is omitted.
FIG. 5 is a perspective view schematically showing a structure of a part of the blow-out panel of the air conditioning indoor unit.
FIG. 6 is a plan view schematically showing a structure of a part of the blow-out panel of the air conditioning indoor unit, and showing a structure near a first connecting rod.
FIG. 7 is a plan view schematically showing the structure of a part of the blow-out panel of the air conditioning indoor unit, and showing a structure near a second connecting rod.
FIG. 8 is a sectional side view schematically showing a structure of a part of the air conditioning indoor unit.

DESCRIPTION OF EMBODIMENT

Hereinafter, an embodiment of a blow-out panel and an air conditioning indoor unit will be described with reference to FIGS. 1 to 8 taking the air conditioning indoor unit having an indoor unit body and a blow-out panel as an example in a state where the air conditioning indoor unit is actually installed. For convenience of explanation, three directions orthogonal to one another are X direction, Y direction, and Z direction. Among them, the X direction and the Y direction correspond to directions of a horizontal plane when the air conditioning indoor unit is actually installed. The Z direction corresponds to a vertical direction when the air conditioning indoor unit is actually installed. Further, Y1 direction side, Y2 direction side, X1 direction side, X2 direction side, Z1 direction side, and Z2 direction side respectively correspond to a front side, a rear side, a left side, a right side, a lower side, and an upper side when the air conditioning indoor unit is actually installed.
As shown in FIG. 1, an air conditioning indoor unit 1 according to this embodiment has an indoor unit body 10 and a blow-out panel 20. An axial fan 30 is provided in the indoor unit body 10. The blow-out panel 20 is provided at a lower part of the indoor unit body 10 (on the Z1 direction side).
Here, the indoor unit body 10 has a substantially rectangular parallelepiped shape as a whole, and has a top surface, a bottom surface, and four side surfaces. An intake ports JF are provided on all the side surfaces, and filter units 40 are provided on all the intake ports JF. As shown in FIG. 1, a heat exchanger 50 is further provided in the indoor unit body 10. The heat exchanger 50 is provided at an inner side of the intake ports JF and is surrounded by the filter units 40. An axial fan 30 is provided at an inner side of the heat exchanger 50. The axial fan 30 is provided such that an rotational axis overlaps with a center axis L of the blow-out panel 20 (axis that passes through a center of the blow-out panel 20 and extends in a thickness direction of the blow-out panel 20). As shown in FIG. 2, at this time, a spiral airflow generated by the axial fan flows clockwise around the center of the blow-out panel.
Further, as shown in FIGS. 1 and 2, the blow-out panel 20 has an outer frame 21, an inner frame 22, and a connecting rod 24. A polygonal blow-out port CF is formed by being surrounded by the outer frame 21 and the inner frame 22. The connecting rod 24 is provided at a corner of the blow-out panel 20 and connects the outer frame 21 and the inner frame 22. This eliminates the need for adding further connecting members, and reduces interference of the other connecting members with the airflow from the blow-out port. Thus, the structure is simple, and furthermore, the blow-out area can be increased.
Here, as shown in FIGS. 1 and 2, as viewed from an inner surface side to an outer surface side of the blow-out panel 20, specifically, as viewed from a side of the blow-out panel 20 closer to the indoor unit body 10 (Z2 direction side) toward a side away from the indoor unit body 10 (Z1 direction side), the connecting rod 24 has a first surface (downstream in a clockwise direction in FIG. 2) and a second surface (upstream in the clockwise direction in FIG. 2). The airflow generated by the axial fan or the like flows to the second surface and the first surface in that order. In other words, the second surface is an air receiving surface, and the first surface is a surface opposite to the air receiving surface (rear surface).
Here, as shown in FIG. 2, the blow-out panel 20 has a substantially rectangular shape and has the rectangular outer frame 21 and the rectangular inner frame 22. The rectangular blow-out port CF is formed by being surrounded by the outer frame 21 and the inner frame 22. A set of air guide fins 23 is provided on each side of the blow-out port CF (each side configures a small blow-out port). As shown in FIGS. 2 and 3, each set of air guide fins 23 is configured by three parallel air guide fins. Further, each of the three parallel air guide fins are provided such that a length thereof gradually increases along a direction from the inner frame 22 to the outer frame 21 of the blow-out panel 20. When the air guide fins 23 are rotated to open the blow-out port CF, the airflows at both ends of the air guide fins 23 do not blow out in parallel, but gradually spread downward along the ends of the plurality of air guide fins 23. Thus, the airflow having a relatively low flow velocity at both ends of the air guide fins 23 is not attracted to a ceiling. This prevents contaminants such as dust included in the airflow from adhering to the ceiling. Further, as a whole, most of the airflow is still guided to the air guide fins 23, and a uniform distribution of the airflow can be maintained unchanged.
As shown in FIG. 2, the connecting rod 24 is formed to extend from the center of the blow-out panel 20 toward the corner of the blow-out port CF as viewed along the Z direction.
Further, as shown in FIG. 2, the connecting rod 24 includes a first connecting rod 24A and a second connecting rod 24B provided on one side of the blow-out port. As viewed along the Z direction, the second connecting rod 24B is disposed downstream of the first connecting rod 24A in the clockwise direction. Thus, the airflow generated by the axial fan or the like can be guided to the two corners of the blow-out port CF by using the first connecting rod 24A and the second connecting rod 24B. As a result, both of the airflows at the two corners of the blow-out port CF can be uniformly distributed.
Further, as shown in FIGS. 2 and 6, the first connecting rod 24A has a connecting rod body 241A and a connecting portion 242A. The air guide fins 23 are rotatably arranged on the connecting rod body 241A. The connecting portion 242A is closer to the center of the blow-out panel 20 than the connecting rod body 241A, and connects the connecting rod body 241A to the inner frame 22. Further, as viewed along the Z direction, a second surface 2421A of the connecting portion 242A and a second surface 2411A of the connecting rod body 241A are combined to form an inwardly concave shape. Here, as shown in FIGS. 4 and 5, the connecting portion 242A has a first portion 2423A extending substantially along a direction in which the connecting rod body 241A extends and a second portion 2424A connecting the first portion 2423A to the inner frame 22. Both the first portion 2423A and the second portion 2424A have an air guide surface that serves to guide the airflow. Specifically, both end surfaces of the first portion 2423A and the second portion 2424A near the center of the blow-out panel are arch-shaped air guide surfaces. The end surface of the second portion 2424A away from the center of the blow-out panel is a beveled surface extending toward the corners of the blow-out port CF (as the end surface goes closer to the corners of the blow-out port CF, the air receiving surface and the rear surface come closer). The beveled surface guides the airflow generated by the axial fan or the like to the corners of the blow-out port CF.
Similarly, as shown in FIGS. 2 and 7, the second connecting rod 24B has a connecting rod body 241B and a connecting portion 242B. Air guide fins 23 are rotatably arranged on the connecting rod body 241B. The connecting portion 242B is closer to the center of the blow-out panel 20 than the connecting rod body 241B, and connects the connecting rod body 241B to the inner frame 22. Further, as viewed along the Z direction, a second surface 2421B of the connecting portion 242B and a second surface 2411B of the connecting rod body 241B are combined to form an inwardly concave shape. Similarly, as shown in FIG. 5, the connecting portion 242B has a first portion 2423B extending substantially along a direction in which the connecting rod body 241B extends and a second portion 2424B connecting the first portion 2423B to the inner frame 22. Both the first portion 2423B and the second portion 2424B have an air guide surface that serves to guide the airflow. Specifically, both end surfaces of the first portion 2423B and the second portion 2424B near the central direction of the blow-out panel are arch-shaped air guide surfaces. The end surface of the second portion 2424B away from the center of the blow-out panel is a beveled surface extending toward the corners of the blow-out port CF. The beveled surface guides the airflow generated by the axial fan or the like to the corners of the blow-out port CF.
As shown in FIG. 6, in the first connecting rod 24A, the second surface 2411A as the air receiving surface of the connecting rod body 241A and a first surface 2412A as the rear surface of the air receiving surface are substantially flat surfaces. The second surface 2421A and the first surface 2422A of the connecting portion 242A are substantially flat surfaces. Further, the second surface 2411A of the connecting rod body 241A and the second surface 2421A of the connecting portion 242A intersect. The first surface 2412A of the connecting rod body 241A and the first surface 2422A of the connecting portion 242A are substantially the same surface or form an obtuse angle larger than an angle formed by the second surfaces.
As a result, the airflow guided to an air guide piece can be guided to the first surface 2412A of the connecting rod body along the first surface 2422A of the connecting portion 242A and further to the corners of the blow-out port CF.
Similarly, as shown in FIG. 7, in the second connecting rod 24B, the second surface 2411B as the air receiving surface of the connecting rod body 241B and a first surface 2412B as the rear surface of the air receiving surface are substantially flat surfaces. The second surface 2421B and the first surface 2422B of the connecting portion 242B are substantially flat surfaces. Further, the second surface 2411B of the connecting rod body 241B and the second surface 2421B of the connecting portion 242B intersect. The first surface 2412B of the connecting rod body 241B and the first surface 2422B of the connecting portion 242B are substantially the same surface, or form a larger obtuse angle than an angle formed by the second surfaces. As a result, the airflow guided to the air guide piece can be guided to the first surface 2412B of the connecting rod body along the first surface 2422B of the connecting portion 242B and further to the corners of the blow-out port CF.
Further, as shown in FIGS. 6 and 7, in the first connecting rod 24A, the second surface 2421A of the connecting portion 242A and the second surface 2411A of the connecting rod body 241A form an obtuse angle. On the second connecting rod 24B, the second surface 2421B of the connecting portion 242B and the second surface 2411B of the connecting rod body 241B also form an obtuse angle. As a result, when the airflow generated by the axial fan or the like flows toward the connecting rod bodies 241A and 241B along the connecting portions 242A and 242B, a change in a direction of the airflow becomes relatively gentle. Thus, an airflow turbulence is less likely to occur at the connection of the second surfaces 2421A and 2421B of the connecting portions 242A and 242B and the second surfaces 2411A and 2411B of the connecting rod bodies 241A and 241B.
Here, on the first connecting rod 24A, an angle α1 formed between the second surface 2421A of the connecting portion 242A and the second surface 2411A of the connecting rod body 241A is preferably 166° or more and 174° or less, and more preferably 171°. On the second connecting rod 24B, an angle α2 formed between the second surface 2421B of the connecting portion 242B and the second surface 2411B of the connecting rod body 241B is preferably 164° or more and 176° or less, and more preferably 169°.
Further, as shown in FIGS. 6 and 7, on the first connecting rod 24A, an angle β1 formed between the second surface 2421A and the first surface 2422A of the connecting portion 242A is preferably larger than 0° and smaller than 10°. The angle β1 is more preferably 6°. On the second connecting rod 24B, an angle β2 formed between the second surface 2421B and the first surface 2422B of the connecting portion 242B is preferably larger than 0° and smaller than 10°. The angle β2 is more preferably 8.3°.
Further, as shown in FIG. 2, the first connecting rod 24A and the second connecting rod 24B on both sides of one corner of the blow-out port CF are formed such that the connecting rod body of the first connecting rod 24A and the connecting rod body of the second connecting rod 24B are parallel to each other.
Further, as shown in FIG. 4, on the first connecting rod 24A, a rotating shaft 29 of the air guide fins 23 is pivotally connected to the connecting rod body 241A in parallel to the air guide fins 23. A boundary between the connecting portion 242A and the connecting rod body 241A is disposed between the inner frame 22 and the rotating shaft 29. Similarly, on the second connecting rod 24B, the rotating shaft of the air guide fins 23 is pivotally connected to the connecting rod body 241B in parallel to the air guide fins 23. A boundary between the connecting portion 242B and the connecting rod body 241B is disposed between the inner frame 22 and the rotating shaft. As shown in FIGS. 2 and 3, the air guide fins 23 provided in the blow-out port CF are pivotally connected to the connecting rod body 241A of the first connecting rod 24A and the connecting rod body 241B of the second connecting rod 24B respectively by one rotating shaft. This enables the air guide fins 23 to be gently rotated.
Here, as shown in FIGS. 2 and 3, the blow-out panel 20 is further provided with an intermediate connecting rod 25. The intermediate connecting rod 25 connects the outer frame 21 to the inner frame 22. The intermediate connecting rod 25 is disposed in a middle of the blow-out port CF and is perpendicular to the air guide fins 23 as viewed along the Y direction. A step motor (not shown) that drives and rotates the air guide fins 23 is attached to the intermediate connecting rod 25. The first connecting rod 24A and the second connecting rod 24B are provided substantially symmetrically to the intermediate connecting rod 25.
Here, as shown in FIG. 8, when the air conditioning indoor unit 1 operates, the air guide fins 23 are rotated to a set angle with respect to the outer surface of the blow-out panel 20. In the thickness direction of the blow-out panel, there is a gap between (an uppermost edge of) the air guide fins 23 and (the connecting rod body of) the connecting rod 24 for the airflow generated by the axial fan to flow. It is preferable that a gap of about 5 mm can be ensured between (the uppermost edge of) the air guide fins 23 and (the connecting rod body of) the connecting rod 24 when the air guide fins 23 are rotated to a maximum angle (for example, 75 degrees or 90 degrees) with respect to the outer surface of the blow-out panel 20. This gap may be larger than 5 mm in order to expand a path through which the airflow flows, provided that it does not affect a miniaturization of the blow-out panel. This gap may be smaller than 5 mm, provided that it is ensured that the air guide fins 23 do not interfere with the connecting rod 24 after being rotated.
Further, as shown in FIG. 2, the blow-out panel 20 is further provided with air shield plates 27. The air shield plates 27 are provided at each corner of the blow-out port CF, and connect the outer frame 21 to the inner frame 22. The air shield plates can be used to separate the airflows guided by the air guide fins adjacent in a peripheral direction. This can prevent the airflows guided by the air guide fins adjacent in the peripheral direction from interfering with each other at the blow-out port and improve the airflow at the blow-out port.
Further, as shown in FIGS. 2 and 3, the inner frame 22 is provided with a central member 26. The central member 26 is provided with an air guide piece 261. The air guide piece 261 has a first surface as a rear surface of an air receiving surface and a second surface as the air receiving surface. As viewed along the Z direction (specifically, the viewpoint of FIG. 3), the first surface is disposed downstream of the second surface in the clockwise direction. Further, an intake end 261a of the air guide piece 261 is disposed on an extension line of the first surface of the connecting rod body of the connecting rod 24. Specifically, the intake end of the air guide piece disposed between the intermediate connecting rod 25 and the first connecting rod 24A is disposed on an extension line of the rear surface (first surface) of the air receiving surface of the connecting rod body of the first connecting rod 24A. The intake end of the air guide piece disposed between the intermediate connecting rod 25 and the second connecting rod 24B is disposed on an extension line of the first surface of the connecting rod body of the second connecting rod 24B.
Further, as shown in FIG. 8, at least part of the central member 26 projects from the blow-out panel 20 in the Z direction such that the air guide piece 261 can be easily installed on the central member 26. The central member 26, which has the arch-shaped air guide surface, can guide the airflow generated by the axial fan or the like to the blow-out port CF. Further, as shown in FIG. 8, the connecting rod 24 is disposed at a center of the air guide piece 261 in the Z direction. The airflow generated by the axial fan or the like flows to the connecting portion of the connecting rod 24 via the air receiving surface of the air guide piece 261, and is guided to the corners of the blow-out port CF along the connecting rod body.
In this embodiment, when the air conditioning indoor unit 1 operates, the axial fan 30 is rotated and the air guide fins 23 of the blow-out panel 20 open at a predetermined angle. The airflow is sucked into the indoor unit body 10 from the intake port JF by a function of the axial fan 30, passes through the filter unit 40 and the heat exchanger 50 in that order, and flows toward a center of the air conditioning indoor unit 1. Next, the airflow forms a spiral airflow through the axial fan 30 and flows down below to the central member 26. Then, the airflow is guided to the arch-shaped air guide surface of the central member 26, spreads from the center of the blow-out panel 20 to the periphery, and reaches the blow-out port CF. A part of this airflow is guided to the corners of the blow-out port CF by the air guide piece 261 provided on the central member 26, specifically, the second surface as the air receiving surface of the air guide piece 261. This part of the airflow passes from below a support rod 262 (this support rod 262 connects the central member 26 and the indoor unit body 10), and is guided to the corners of the blow-out port CF via the connecting rod 24. Specifically, the airflow flows along the connecting portions 242A and 242B of the connecting rod 24 to the connecting rod bodies 241A and 241B and is guided to the corners of the blow-out port CF. The other part of the airflow is guided by the central member 26 to the center of the blow-out port. Finally, the airflow passes through the blow-out port CF, is guided to the air guide fins 23 of the blow-out port CF, and is blown out of the air conditioning indoor unit 1.
In the air conditioning indoor unit 1 according to this embodiment, the blow-out panel 20 uses the polygonal blow-out port CF formed by being surrounded by the outer frame 21 and the inner frame 22. This enables the air to be blown out all around 360°. Further, the blow-out panel 20 has the connecting rod 24 provided at the corners of the blow-out panel 20. As viewed along the Z direction, the second surface of the connecting portion of the connecting rod 24 and the second surface of the connecting rod body are combined to form an inwardly concave shape. Thus, the second surface of the connecting portion of the connecting rod 24 is used to guide the airflow generated by the axial fan 30 to the corners of the blow-out port CF via the second surface of the connecting rod body. This allows the air to be blown out of the blow-out port CF uniformly.
Further, in the air conditioning indoor unit 1 according to this embodiment, on the connecting rod 24, the second surface of the connecting portion and the second surface of the connecting rod body form an inwardly indented obtuse angle. This ensures an effect that the second surface of the connecting portion of the connecting rod 24 guides the airflow generated by the axial fan 30 to the corners of the blow-out port CF. In addition, it is possible to reduce the interference of the connecting portion of the connecting rod 24 and the connecting rod body with the airflow generated by the axial fan 30 and to make the air blown out of the blow-out port CF uniform.
Further, in the air conditioning indoor unit 1 of this embodiment, the connecting rod 24 includes the first connecting rod 24A and the second connecting rod 24B. On the first connecting rod 24A, the angle formed between the second surface 2421A of the connecting portion 242A and the second surface 2411A of the connecting rod body 241A is 166° or more and 174° or less, and the angle formed by the second surface 2421A and the first surface 2422A of the connecting portion 242A is more than 0° and less than 10°. On the second connecting rod 24B, the angle formed between the second surface 2421B of the connecting portion 242B and the second surface 2411B of the connecting rod body 241B is 164° or more and 176° or less, and the angle formed by the second surface 2421B and the first surface 2422B of the connecting portion 242B is more than 0° and less than 10°. This further ensures the effect that the second surface of the connecting portion of the connecting rod 24 guides the airflow generated by the axial fan 30. In addition, it is possible to reduce the interference of the connecting portion of the connecting rod 24 and the connecting rod body with the airflow generated by the axial fan 30 and to make the airflow blown out of the blow-out port CF more uniform. This enables the air to be blown out all around 360° of the blow-out panel.
Further, in the air conditioning indoor unit 1 according to this embodiment, the first connecting rod 24A and the second connecting rod 24B on both sides of one corner of the blow-out port CF are formed such that the connecting rod body of the first connecting rod 24A and the connecting rod body of the second connecting rod 24B are parallel to each other. This can simplify the entire structure of the blow-out panel 20. In addition, it is possible to reduce the interference of the connecting rod body of the connecting rod 24 with the airflow at the corners of the blow-out port CF and to make the air blown out of the blow-out port CF uniform.
Further, in the air conditioning indoor unit 1 according to this embodiment, on the connecting rod 24, the end of the connecting portion away from the connecting rod body has an arched shape as viewed along the Z direction. This can reduce the interference of the end of the connecting portion of the connecting rod 24 away from the connecting rod body with the airflow generated by the axial fan 30. Then, the arched shape of the end is used to guide the airflow generated by the axial fan or the like to the blow-out port CF, and the air is thus blown out of the blow-out port CF uniformly.
Further, in the air conditioning indoor unit 1 according to this embodiment, on the connecting rod 24, a width of the connecting portion becomes gradually narrower toward the connecting rod body as viewed along the Z direction. This can ensure a strength of the entire connecting rod 24 and reduce a volume of the connecting rod 24. Thus, it is possible to reduce the interference of the connecting portion of the connecting rod 24 with the airflow generated by the axial fan 30 and to make the air blown out of the blow-out port CF uniform.
Further, in the air conditioning indoor unit 1 according to this embodiment, the connecting rod 24 is formed to extend from a central direction of the blow-out panel 20 toward the corners of the blow-out port CF as viewed along the Z direction. This can reduce the interference of the connecting rod 24 with the airflow generated by the axial fan 30 and also allows the airflow to blow out from the corners of the blow-out port CF. Furthermore, the air is blown out all around 360° of the blow-out panel, and the air blown out of the blow-out port CF is uniform.
Further, in the air conditioning indoor unit 1 according to this embodiment, on the connecting rod 24, the width of the connecting portion is equal to or greater than a width of the connecting rod body as viewed along the Z direction. It is therefore possible to reduce the interference of the connecting rod 24 with the airflow generated by the axial fan 30 and to make the air blown out of the blow-out port CF uniform.
Further, in the air conditioning indoor unit 1 according to this embodiment, on the connecting rod 24, the connecting rod body is connected to the air guide fins 23 via the rotating shaft 29. This enables the air guide fins 23 to be connected to the connecting rod 24 with a simple structure.
Further, in the air conditioning indoor unit 1 according to this embodiment, on the connecting rod 24, the boundary between the connecting portion and the connecting rod body is disposed between the inner frame 22 and the rotating shaft 29. This simplifies the structure of the connecting rod 24 and can prevent the air guide fins 23 from interfering with the connecting rod 24 during rotation of the air guide fins 23.
In the air conditioning indoor unit 1 according to this embodiment, the blow-out panel 20 is further provided with the intermediate connecting rod 25. The intermediate connecting rod 25 connects the outer frame 21 to the inner frame 22. As viewed along the Z direction, the intermediate connecting rod 25 is disposed in the middle of the blow-out port CF and is perpendicular to the air guide fins 23. A step motor that drives and rotates the air guide fins 23 is attached to the intermediate connecting rod 25. As a result, the force received by the air guide fins 23 can be balanced and a drive structure can be simplified. Furthermore, a step motor can be provided in the frame outside of the blow-out port and the blow-out panel can be miniaturized.
Further, in the air conditioning indoor unit 1 according to this embodiment, the inner frame 22 is provided with the central member 26. The central member 26 is provided with the air guide piece 261. Accordingly, the air guide piece 261 is used to guide the airflow generated by the axial fan 30 and to prevent the airflow from blowing straight downward. This enables the air to be blown out of the blow-out port CF more uniformly.
Further, in the air conditioning indoor unit 1 according to this embodiment, the intake end 261a of the air guide piece 261 is disposed on an extension line of the first surface of the connecting rod body of the connecting rod. This further ensures the airflow flowing to the corners of the blow-out port CF and allows the air to be blown out of the blow-out port CF uniformly.
Further, in the air conditioning indoor unit 1 according to this embodiment, at least a part of the central member 26 projects from the blow-out panel 20 in the Z direction. Thus, an interaction between the air guide piece 261 and the connecting rod 24 further ensures the airflow flowing to the corners of the blow-out port CF and allows the air to be blown out of the blow-out port CF uniformly.
Further, in the air conditioning indoor unit 1 according to this embodiment, the connecting rod 24 is disposed at the center of the air guide piece 261 in the Z direction. This strengthens the interaction between the air guide piece 261 and the connecting rod 24, ensures the airflow flowing to the corners of the blow-out port CF, and allows the air to be blown out of the blow-out port CF uniformly.
Although the blow-out panel 20 and the air conditioning indoor unit 1 have been described as an example with reference to the drawings, the specific implementation of the present invention is obviously not limited to the above embodiment.
For example, in the above embodiment, the air conditioning indoor unit including the indoor unit body and the blow-out panel provided at the lower part of the indoor unit body has been described as an example. However, the present invention is not limited thereto. For example, the blow-out panel may be connected to an air treatment device through a blower tube, and the spiral airflow sent from a blower unit of the air treatment device may be sent to the blow-out panel via the blower tube and then sent out of the blow-out panel.
Further, in the above embodiment, the spiral airflow generated by the axial fan flows clockwise around the center of the blow-out panel. However, the spiral airflow generated by the axial fan may flow counterclockwise around the center of the blow-out panel by driving of a motor. In this way, as viewed from the inner surface side to the outer surface side of the blow-out panel, the first surface of the connecting portion and the connecting rod body is disposed downstream of the second surface in the counterclockwise direction around the center of the blow-out panel. The second connecting rod is disposed downstream of the first connecting rod in the counterclockwise direction around the center of the blow-out panel. The first surface of the air guide piece is disposed downstream of the second surface of the air guide piece in the counterclockwise direction around the center of the blow-out panel. Compared to the above embodiment, the structure of this blow-out panel and the structure of the blow-out panel of the above embodiment are mirror images of each another.
Further, the indoor unit body 10 has a substantially cubic shape as a whole in the above embodiment. However, the shape of the indoor unit body may be appropriately changed depending on the situation. For example, the indoor unit body may be formed to be in a substantially columnar shape or a prismatic shape other than a square prism. Similarly, although the blow-out panel 20 has a substantially rectangular shape as viewed along the Z direction in the above embodiment, the shape of the blow-out panel may be appropriately changed depending on the situation. For example, the blow-out panel may be formed in a substantially circular shape or, for example, a polygon other than a quadrangle as viewed along the Z direction.
Further, the blow-out port CF has a rectangular shape in the above embodiment, but not limited to this as long as the blow-out port is formed in a polygonal shape.
Further, in the above embodiment, the intake ports JF are provided on all the side surfaces of the indoor unit body 10, and the filter units 40 are provided on all the intake ports JF. However, the numbers of intake ports and filter units may be appropriately adjusted as necessary.
Further, one first connecting rod 24A and one second connecting rod 24B are provided on one side of the blow-out port CF in the above embodiment. However, the numbers of first connecting rods 24A and second connecting rods 24B provided on the one side of the blow-out port CF may be changed as required.
Further, the connecting rod 24 includes the first connecting rod 24A and the second connecting rod 24B in the above embodiment. However, the connecting rod 24 is not limited to this, and may include only one of the first connecting rod 24A or the second connecting rod 24B.
Further, in the above embodiment, the first connecting rod 24A and the second connecting rod 24B on both sides of one corner of the blow-out port CF are formed such that the connecting rod body of the first connecting rod 24A and the connecting rod body of the second connecting rod 24B are in parallel to each other. However, without being limited to this, the connecting rod body of the first connecting rod 24A and the connecting rod body of the second connecting rod 24B are provided symmetrically to the intermediate connecting rod 25, but may be formed non-parallel to each other.
Further, at least a part of the central member 26 projects from the blow-out panel 20 in the above embodiment. However, the present invention is not limited to this. In the thickness direction of the blow-out panel, an uppermost part of the central member may have substantially the same height as an uppermost part of the blow-out panel or may be lower than the uppermost part of the blow-out panel.
Further, in the above embodiment, on the first connecting rod 24A, the second surface 2411A and the first surface 2412A of the connecting rod body 241A are substantially flat surfaces, and the second surface 2421A and the first surface 2422A of the connecting portion 242A are substantially flat surfaces. On the second connecting rod 24B, the second surface 2411B and the first surface 2412B of the connecting rod body 241B are substantially flat surfaces, and the second surface 2421B and the first surface 2422B of the connecting portion 242B are substantially flat surfaces. However, without being limited to this, the second surface 2411A and the first surface 2412A of the connecting rod body 241A, and the second surface 2421A and the first surface 2422A of the connecting portion 242A may be formed in another shape (for example, an arch, a folded line, or the like as viewed along the Z direction). The second surface 2411B and the first surface 2412B of the connecting rod body 241B, and the second surface 2421B and the first surface 2422B of the connecting portion 242B may also be formed in another shape (for example, an arch, a folded line, or the like as viewed along the Z direction).
Further, the central member 26 is provided on the inner frame 22 in the above embodiment, but the present invention is not limited to this, and the central member may be omitted.

REFERENCE SIGNS LIST

1: Air conditioning indoor unit
10: Indoor unit body
20: Blow-out panel
21: Outer frame
22: Inner frame
23: Air guide fin
24: Connecting rod
24A: First connecting rod
24B: Second connecting rod
241A, 241B: Connecting rod body
2411A, 2411B: Second surface
2412A, 2412B: First surface
242A, 242B: Connecting portion
2421A, 2421B: Second surface
2422A, 2422B: First surface
2423A, 2423B: First portion of connecting portion
2424A, 2424B: Second portion of connecting portion
XMA, XMB: Beveled surface
25: Intermediate connecting rod
26: Central member
261: Air guide piece
261a: Intake end
262: Support rod
27: Air shield plate
29: Rotating shaft
30: Axial fan
40: Filter unit
50: Heat exchanger
L: Center axis

Claims

A blow-out panel (20) comprising:
an outer frame (21);

an inner frame (22); and

a connecting rod (24), wherein

a blow-out port (CF) having a polygonal shape is formed by being surrounded by the outer frame (21) and the inner frame (22),

the connection rod is provided at a corner of the blow-out port (CF),

the connecting rod (24) connects the outer frame and the inner frame,

the connecting rod (24) has a connecting rod body (241A, 241B) and a connecting portion (242A, 242B),

the connecting portion (242A, 242B) is closer to a center of the blow-out panel (20) than the connecting rod body (241A, 241B),

the connecting portion (242A, 242B) connects the connecting rod body (241A, 241B) to the inner frame (22),

the connecting portion (242A, 242B) and the connecting rod body (241A, 241B) each have a first surface and a second surface,

as viewed from an inner surface side to an outer surface side of the blow-out panel (20), the first surface is disposed downstream of the second surface in a clockwise direction around the center of the blow-out panel (20), or the first surface is disposed downstream of the second surface in a counterclockwise direction around the center of the blow-out panel (20), and

the second surface (2421A, 2421B) of the connecting portion (242A, 242B) and the second surface (2411A, 2411B) of the connecting rod body (241A, 241B) are combined to form an inwardly concave shape.
The blow-out panel according to claim 1, wherein the second surface (2421A, 2421B) of the connecting portion (242A, 242B) and the second surface (2411A, 2411B) of the connecting rod body (241A, 241B) form an obtuse angle.
The blow-out panel according to claim 2, wherein
the connecting rod (24) includes a first connecting rod (24A) and a second connecting rod (24B) that are provided on one side of the blow-out port (CF), and

as viewed from an inner surface side to an outer surface side of the blow-out panel (20), the first surface is disposed downstream of the second surface in a clockwise direction around a center of the blow-out panel (20), and the second connecting rod (24B) is disposed downstream of the first connecting rod (24A) in the clockwise direction, or

the first surface is disposed downstream of the second surface in a direction counterclockwise around the center of the blow-out panel (20), and the second connecting rod (24B) is disposed downstream of the first connecting rod (24A) in the counterclockwise direction.
The blow-out panel according to claim 3, wherein
on the first connecting rod (24A), an angle formed between the second surface (2421A) of the connecting portion (242A) and the second surface (2411A) of the connecting rod body (241A) is 166° or more and 174° or less, and/or

on the second connecting rod (24B), an angle formed between the second surface (2421B) of the connecting portion (242B) and the second surface (2411B) of the connecting rod body (241B) is 164° or more and 176° or less.
The blow-out panel according to claim 4, wherein
on the first connecting rod (24A), an angle formed between the second surface (2421A) and a first surface (2422A) of the connecting portion (242A) is more than 0° and less than 10°, and/or

on the second connecting rod (24B), an angle formed between the second surface (2421B) and a first surface (2422B) of the connecting portion (242B) is more than 0° and less than 10°.
The blow-out panel according to any one of claims 1 to 5, wherein an end of the connecting portion (242A, 242B) away from the connecting rod body (241A, 241B) has an arch shape as viewed from the inner surface side to the outer surface side of the blow-out panel (20).
The blow-out panel according to any one of claims 1 to 6, wherein a width of the connecting portion (242A, 242B) gradually narrows toward the connecting rod body (241A, 241B) as viewed from the inner surface side to the outer surface side of the blow-out panel (20).
The blow-out panel according to any one of claims 1 to 7, wherein the connecting rod (24) is formed to extend from the center of the blow-out panel (20) toward the corner of the blow-out port (CF) as viewed from the inner surface side to the outer surface side of the blow-out panel (20).
The blow-out panel according to any one of claims 1 to 8, wherein the width of the connecting portion (242A, 242B) is bigger than a width of the connecting rod body (241A, 241B) as viewed from the inner surface side to the outer surface side of the blow-out panel (20).
The blow-out panel according to any one of claims 1 to 9, further comprising an air guide fin (23) provided at the blow-out port (CF), wherein the air guide fin (23) is rotatably arranged on the connecting rod body (241A, 241B).
The blow-out panel according to claim 10, wherein a rotating shaft (29) of the air guide fin (23) is pivotally connected to the connecting rod body (241A, 241B) in parallel to the air guide fin (23).
The blow-out panel according to claim 11, wherein a boundary between the connecting portion (242A, 242B) and the connecting rod body (241A, 241B) is disposed between the inner frame (22) and the rotating shaft (29).
The blow-out panel according to claim 10, further comprising an intermediate connecting rod (25), wherein
the intermediate connecting rod (25) connects the outer frame (21) to the inner frame (22),

the intermediate connecting rod (25) is disposed in a middle of the blow-out port (CF) and is perpendicular to the air guide fin (23) as viewed from an inner surface side to an outer surface side of the blow-out panel (20), and

a step motor that drives and rotates the air guide fin (23) is attached to the intermediate connecting rod (25).
The blow-out panel according to any one of claims 1 to 13, wherein
the inner frame (22) is provided with a central member (26), and

the central member (26) is provided with an air guide piece (261).
The blow-out panel according to claim 14, wherein an intake end (261a) of the air guide piece (261) is on an extension line of the first surface (2412A, 2412B) of the connecting rod body (241A, 241B).
The blow-out panel according to claim 14 or 15, wherein the connecting rod (24) is disposed at a center of the air guide piece (261) in a thickness direction of the blow-out panel (20).
The blow-out panel according to any one of claims 1 to 16, wherein
the connecting portion (242A, 242B) has a first portion (2423A, 2423B) extending along a direction in which the connecting rod body (241A, 241B) extends, and a second portion connecting the first portion to the inner frame (2424A, 2424B), and

an end surface of the second portion away from the center of the blow-out panel (20) is a beveled surface extending toward the corner of the blow-out port (CF).
An air conditioning indoor unit comprising:
an indoor unit body (10); and

the blow-out panel (20) described in any one of claims 1 to 17,

wherein the blow-out panel (20) is provided at a lower part of the indoor unit body (10) or is connected to the indoor unit body (10) via a blower tube.
The air conditioning indoor unit according to claim 18, wherein
an axial fan (30) is provided in the indoor unit body (10),

a center of the axial fan (30) and a center of the blow-out panel (20) overlap as viewed along a thickness direction of the blow-out panel (20),

the inner frame (22) is provided with a central member (26),

the central member (26) is provided with an air guide piece (261), and

an airflow blown out from the axial fan (30) flows to a connecting portion (242A, 242B) of the connecting rod (24) via the air guide piece (261).
The air conditioning indoor unit according to claim 19, wherein
the air guide piece (261) has a first surface and a second surface,

as viewed from an inner surface side to an outer surface side of the blow-out panel (20), the airflow blown out from the axial fan (30) flows clockwise around the center of the blow-out panel (20), and the first surface is disposed downstream of the second surface in a clockwise direction, or

the airflow blown out from the axial fan (30) flows counterclockwise around the center of the blow-out panel (20), and the first surface is disposed downstream of the second surface in a counterclockwise direction, and

the airflow blown out from the axial fan (30) flows to the connecting portion (242A, 242B) of the connecting rod (24) via the second surface of the air guide piece (261).