EP2918938A1

EP2918938A1 - Air conditioner

Info

Publication number: EP2918938A1
Application number: EP13842783.6A
Authority: EP
Inventors: Hiroyuki Tada; Yuusuke SHIONO
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2012-09-28
Filing date: 2013-08-12
Publication date: 2015-09-16
Also published as: CN104685302A; WO2014050334A1; EP2918938A4; CN104685302B; JP2014070838A; JP5505476B2

Abstract

The air volume decreases as cold air from an air delivery fan collides with an auxiliary up-down wind direction plate. An air conditioner 1 includes an air delivery fan 3 which is provided on an air passage from an inlet port 13 to an outlet port 14, an up-down wind direction plate 6 which is rotatably supported in the vicinity of the outlet port 14 and extends along the length of the outlet port 14, and an auxiliary up-down wind direction plate 7 which is rotatably supported above the up-down wind direction plate 6 and extends along the length of the outlet port 14. An upper wall portion 15 of the air passage includes a first upper wall portion 16 which inclines downward toward the front and a second upper wall portion 17 which is provided to the front of the first upper wall portion 16 to widen the air passage. In a cooling operation, the air conditioner 1 is arranged such that the auxiliary up-down wind direction plate 7 is positioned on the second upper wall portion 17 side of a plane which is an extension of the first upper wall portion 16.

Description

[Technical Field]

The present invention relates to an air conditioner in which an up-down wind direction plate and an auxiliary up-down wind direction plate are positioned in the vicinity of an outlet port.

[Background]

A known air conditioner includes an air delivery fan provided on an air passage from an inlet port to an outlet port, an up-down wind direction plate positioned in the vicinity of the outlet port, and an auxiliary up-down wind direction plate positioned above the up-down wind direction plate. The up-down wind direction plate and the auxiliary up-down wind direction plate are rotatably supported and extend along the length of the outlet port. An upper wall portion of the air passage which reaches the outlet port is disposed to incline downward toward the front, and the auxiliary up-down wind direction plate is positioned in the vicinity of the upper wall portion which inclines downward.

[Citation List]

[Patent Document]

[Patent Document 1] Japanese Unexamined Patent Publication No. 2009-79846

[Summary of Invention]

[Technical Problem]

In the known air conditioner, in a cooling operation, the up-down wind direction plate may be positioned to be substantially horizontal so that the wind direction of the cold air blown out from the outlet port is set at a substantially horizontal direction. In this case, the cold air from an air delivery fan 3 flows in a gap between the up-down wind direction plate and the downward-inclining upper wall portion and is then blown out. However, because the auxiliary up-down wind direction plate is provided in the vicinity of the downward-inclining upper wall portion, the cold air flowing along the upper wall portion collides with the auxiliary up-down wind direction plate, and hence the air volume is decreased. In addition to the above, in the known air conditioner, the up-down wind direction plate maybe controlled to swing in an up-down direction in the cooling operation. Also in this case, the cold air flowing along the downward-inclining upper wall portion collides with the auxiliary up-down wind direction plate and the air volume is decreased.
An object of the present invention is to provide an air conditioner in which the decrease in the air volume due to the collision of cold air from an air delivery fan with an auxiliary up-down wind direction plate is prevented in a cooling operation.

[Solution to Problem]

According to the first aspect of the invention, an air conditioner includes: an air delivery fan provided on an air passage which is from an inlet port to an outlet port; an up-down wind direction plate which is rotatably supported in the vicinity of the outlet port and extends along the length of the outlet port; and an auxiliary up-down wind direction plate which is rotatably supported above the up-down wind direction plate and extends along the length of the outlet port, an upper wall portion of the air passage including a first upper wall portion which inclines downward to the front and a second upper wall portion which is provided to the front of the first upper wall portion to widen the air passage, when a cooling operation is executed or when the air conditioner is not driven, the auxiliary up-down wind direction plate being provided on the second upper wall portion side of a plane which is an extension of the first upper wall portion.
In this air conditioner, because in the cooling operation the auxiliary up-down wind direction plate is positioned on the second upper wall portion side of the plane which is the extension of the first upper wall portion, the auxiliary up-down wind direction plate is not on the flowing passage of the cold air from the air delivery fan. As such, the decrease in the air volume due to the collision of the cold air from the air delivery fan with the auxiliary up-down wind direction plate is prevented.
According to the second aspect of the invention, the air conditioner of the first aspect is arranged such that the second upper wall portion extends in a substantially horizontal direction or inclines upward toward the front.
In this air conditioner, because the second upper wall portion extends in the substantially horizontal direction or inclines upward toward the front, the auxiliary up-down wind direction plate is easily positioned not to be on the flowing path of the cold air from the air delivery fan.
According to the third aspect of the invention, the air conditioner of the first or second aspect is arranged such that the up-down wind direction plate is positioned to be substantiall horizontal.
In this air conditioner, the decrease in the air volume is prevented when the wind direction of the cold air blown out from the outlet port is substantially horizontal.
According to the fourth aspect of the invention, the air conditioner of first or second aspect is arranged such that the up-down wind direction plate is swung in an up-down direction.
In this air conditioner, the decrease in the air volume is prevented when the wind direction of the cold air blown out from the outlet port is repeatedly changed in the up-down direction.
According to the fifth aspect of the invention, the air conditioner of any one of the first to third aspects is arranged such that a gap is formed between a top surface of the auxiliary up-down wind direction plate and the second upper wall portion.
In this air conditioner, there is a gap between the top surface of the auxiliary up-down wind direction plate and the second upper wall portion, and a part of the cold air from the air delivery fan flows above the auxiliary up-down wind direction plate. In this regard, because the auxiliary up-down wind direction plate is provided on the second upper wall portion side of the plane which is the extension of the first upper wall portion, the volume of the air flowing above the auxiliary up-down wind direction plate is small, with the result that the dispersion of the cold air is restrained.
According to the sixth aspect of the invention, the air conditioner of the fifth aspect is arranged such that the gap is formed by opening the auxiliary up-down wind direction plate downward.
In this air conditioner, even if the auxiliary up-down wind direction plate is in the fully-closed position (where the auxiliary up-down wind direction plate contacts with the upper wall portion and the cold air does not flow between the upper surface of the auxiliary up-down wind direction plate and the upper wall portion) when the air conditioner is not driven, the auxiliary up-down wind direction plate is opened downward at the start of the cooling operation, and hence a part of the cold air from the air delivery fan flows above the auxiliary up-down wind direction plate.

[Advantageous Effects of Invention]

As described above, the following effects are obtained by the present invention.
According to the first aspect of the invention, because in the cooling operation the auxiliary up-down wind direction plate is positioned on the second upper wall portion side of the plane which is the extension of the first upper wall portion, the auxiliary up-down wind direction plate is not on the flowing passage of the cold air from the air delivery fan. As such, the decrease in the air volume due to the collision of the cold air from the air delivery fan with the auxiliary up-down wind direction plate is prevented.
According to the second aspect of the invention, because the second upper wall portion extends in the substantially horizontal direction or inclines upward toward the front, the auxiliary up-down wind direction plate is easily positioned not to be on the flowing path of the cold air from the air delivery fan.
According to the third aspect of the invention, the decrease in the air volume is prevented when the wind direction of the cold air blown out from the outlet port is substantially horizontal.
According to the fourth aspect of the invention, the decrease in the air volume is prevented when the wind direction of the cold air blown out from the outlet port is repeatedly changed in the up-down direction.
According to the fifth aspect of the invention, there is a gap between the top surface of the auxiliary up-down wind direction plate and the second upper wall portion, and a part of the cold air from the air delivery fan flows above the auxiliary up-down wind direction plate. In this regard, because the auxiliary up-down wind direction plate is provided on the second upper wall portion side of the plane which is the extension of the first upper wall portion, the volume of the air flowing above the auxiliary up-down wind direction plate is small, with the result that the dispersion of the cold air is restrained.
According to the sixth aspect of the invention, even if the auxiliary up-down wind direction plate is in the fully-closed position (where the auxiliary up-down wind direction plate contacts with the upper wall portion and the cold air does not flow between the upper surface of the auxiliary up-down wind direction plate and the upper wall portion) when the air conditioner is not driven, the auxiliary up-down wind direction plate is opened downward at the start of the cooling operation, and hence a part of the cold air from the air delivery fan flows above the auxiliary up-down wind direction plate.

[Brief Description of Drawings]

[FIG. 1] FIG. 1 is an external view of an air conditioner of an embodiment of the present invention.
[FIG. 2] FIG. 2 is a cross section of the air conditioner of FIG. 1.
[FIG. 3] Each of FIGs. 3A and 3B illustrates the structure of an auxiliary up-down wind direction plate.
[FIG. 4] FIG. 4 is a cross section of the air conditioner when it is driven in a horizontal blowing mode.
[FIG. 5] FIG. 5 is a cross section of the air conditioner in a swinging operation of an up-down wind direction plate.
[FIG. 6] FIG. 6 is a functional block diagram of the air conditioner shown in FIG. 1.

[Description of Embodiments]

The following will describe an air conditioner of an embodiment of the present invention with reference to figures.

[Structure of Air Conditioner]

The air conditioner of the embodiment of the present invention is constituted by an indoor unit 1 shown in FIG. 1 and an outdoor unit which is not illustrated. The overall shape of the indoor unit 1 is narrow in one direction, and the indoor unit 1 is mounted on a wall surface in a room so that the length of the indoor unit 1 is horizontal. Hereinafter, a direction in which the indoor unit 1 projects from the wall to which the indoor unit 1 is attached will be referred to as "frontward", whereas the direction opposite to the frontward will be referred to as "backward". In addition to the above, the left-right direction shown in FIG. 1 will be simply referred to as "left-right direction".

[Indoor Unit 1]

As shown in FIG. 2, the indoor unit 1 includes members such as a casing 2, an air delivery fan 3 housed in the casing 2, a heat exchanger 4, a left-right wind direction plate 5, an up-down wind direction plate 6, and an auxiliary up-down wind direction plate 7.
The casing 2 includes a substantially rectangular parallelepiped grille 11 and a front panel 12 which covers the front face of the grille 11. In the top face of the grille 11 is formed an inlet port 13 which is a lattice-shaped opening and is long in the left-right direction. In the bottom face of the grille 11 is formed an outlet port 14 which is a rectangular opening which is long in the left-right direction. During an air conditioning operation (a cooling operation or a heating operation), the air which is sucked from the inlet port 13 as the air delivery fan 3 provided in an air passage from the inlet port 13 to the outlet port 14 is driven is heated or cooled in the heat exchanger 4, and is then blown out into the room from the outlet port 14.

An upper wall portion 15, which is in a part from the left-right wind direction plate 5 to the outlet port 14 in the air passage from the inlet port 13 to the outlet port 14, is, as shown in FIG. 2, constituted by a first upper wall portion 16 which inclines downward toward the front and a second upper wall portion 17 which is provided in front of the first upper wall portion 16 to widen the air passage. To be more specific, the second upper wall portion 17 extends substantially horizontally toward the front, and is positioned to widen upward to form an angle of 30 degrees with respect to a plane S which is an extension of the first upper wall portion 16. A lower wall portion 18 of a part from the left-right wind direction plate 5 to the outlet port 14 in the air passage is formed by the grille 11, and inclines downward toward the front.

<Up-Down Wind Direction Plate 6>

The up-down wind direction plate 6 is provided in the vicinity of the outlet port 14 and is supported by a supporter 19 to be rotatable about a rotational axis 19a. This up-down wind direction plate 6 extends along the length of the outlet port 14 (left-right direction). The up-down wind direction plate 6 changes the wind direction of the air blown out from the outlet port 14 in the up-down direction, and opens and closes the outlet port 14. Hereinafter, a lower one of two surfaces of the up-down wind direction plate 6 will be referred to as a front surface 6s, whereas the upper one of the two surfaces will be referred to as a back surface 6b.
The up-down wind direction plate 6 rotates about the rotational axis 19a within a range between an upper side stopper (fully-closed state) and a lower side stopper (fully-open state), as an unillustrated driving motor is driven. This up-down wind direction plate 6 is controllable by operating an unillustrated remote controller, and is able to perform a swinging operation by which the up-down wind direction plate 6 is reciprocated within a predetermined range (between an upper limit position and a lower limit position). Furthermore, by operating the remote controller, the up-down wind direction plate 6 can be fixed at a desired position in the range between the upper limit position and the lower limit position.

As shown in FIG. 2, the auxiliary up-down wind direction plate 7 is provided in the vicinity of the second upper wall portion 17 and above the up-down wind direction plate 6, and is supported by supporters 20 to be rotatable about a rotational axis 20a. This auxiliary up-down wind direction plate 7 extends along the length of the outlet port 14 (left-right direction), and changes the wind direction of the air blown out from the outlet port 14 in the up-down direction, together with the up-down wind direction plate 6.
As shown in FIG. 3A, the auxiliary up-down wind direction plate 7 is a rectangular plate and three supporters 20 are provided on its back surface. Each supporter 20 has a mounting hole 21 and is attached to an unillustrated supporting shaft on the second upper wall portion 17 to be rotatable. For this reason, the auxiliary up-down wind direction plate 7 is rotatable about the rotational axis 20a which is the central axis of the supporting shaft.
This auxiliary up-down wind direction plate 7 is rotated about the rotational axis 20a within a range between an upper side stopper (fully-closed state) and a lower side stopper (fully-open state), as an unillustrated driving motor is driven. The auxiliary up-down wind direction plate 7 is not controllable by operating the remote controller, and the position of this plate 7 is automatically determined in accordance with the operation state of the air conditioner 1 or the like.
In the air conditioner 1, during the cooling operation, the auxiliary up-down wind direction plate 7 is positioned to be on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16. For this reason, as shown in FIG. 2, the auxiliary up-down wind direction plate 7 is positioned above the plane S which is the extension of the first upper wall portion 16 and the rotational axis 20a is positioned to the back of the auxiliary up-down wind direction plate 7. Furthermore, as shown in FIG. 3B, in a cross section orthogonal to the rotational axis 20a of the auxiliary up-down wind direction plate 7, a back end portion 7a of the back surface of the auxiliary up-down wind direction plate 7 inclines away from the rotational axis 20a toward the back end of the auxiliary up-down wind direction plate 7 (i.e., in FIG. 3B, the back end portion 7a of the back surface of the auxiliary up-down wind direction plate 7 inclines downward and the degree of inclination increases backward).

[Remote Controller]

The unillustrated remote controller is capable of performing infrared communications with the indoor unit 1 shown in FIG. 1 and the unillustrated outdoor unit, and sends instructions regarding the control of the indoor unit 1 and the outdoor unit in response to an operation by a user. By using this remote controller, a user is able to select a position to fix the up-down wind direction plate 6, one of operation modes such as "swinging operation of the up-down wind direction plate 6" , "driving in horizontal blowing mode (driving in a predetermined fixed wind direction mode) ", the cooling operation, the heating operation, and the dehumidification operation, and the set temperature.
The "driving in horizontal blowing mode" indicates that, in the cooling operation, as shown in FIG. 4, the up-down wind direction plate 6 and the auxiliary up-down wind direction plate 7 are fixed to extend in a substantially horizontal direction and cold air is blown out from the outlet port 14 in the substantially horizontal direction. Hereinafter, the positions of the up-down wind direction plate 6 and the auxiliary up-down wind direction plate 7 when the up-down wind direction plate 6 and the auxiliary up-down wind direction plate 7 are fixed to extend in the substantially horizontal direction will be referred to as horizontal positions. When the auxiliary up-down wind direction plate 7 is in the horizontal position, the auxiliary up-down wind direction plate 7 is positioned on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16. For this reason, the auxiliary up-down wind direction plate 7 is not provided on the flowing passage of the cold air from the air delivery fan 3 (i.e., the flowing passage when the cold air from the air delivery fan 3 flows along the first upper wall portion 16). Furthermore, the auxiliary up-down wind direction plate 7 is positioned at a location where a gap is formed between the back surface (top surface) thereof and the second upper wall portion 17. On this account, when the "driving in horizontal blowing mode" is set in the cooling operation, the cold air from the air delivery fan 3 flows between the auxiliary up-down wind direction plate 7 and the second upper wall portion 17.
The "swinging operation of the up-down wind direction plate 6" indicates that, in the cooling operation, as shown in FIG. 5, the up-down wind direction plate 6 is swung in the up-down direction within the predetermined range (between the upper limit position and the lower limit position) to change, in the up-down direction, the direction in which the cold air is blown out from the outlet port 14. In this case, the auxiliary up-down wind direction plate 7 is fixed at a predetermined position (e.g., the upper limit position). When the auxiliary up-down wind direction plate 7 is at the upper limit position, the auxiliary up-down wind direction plate 7 is positioned on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16. On this account, the auxiliary up-down wind direction plate 7 is not provided on the flowing passage of the cold air from the air delivery fan 3 (i.e. , the flowing passage of the cold air from the air delivery fan 3 when the cold air flows along the first upper wall portion 16). Furthermore, the auxiliary up-down wind direction plate 7 is provided at a location where a gap is formed between the back surface (top surface) thereof and the second upper wall portion 17. Therefore, when the "swinging operation of the up-down wind direction plate 6" is set in the cooling operation, the cold air from the air delivery fan 3 flows between the auxiliary up-down wind direction plate 7 and the second upper wall portion 17.

[Controller 8]

The controller 8 (control means) is constituted by plural types of hardware such as a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The ROM stores, for example, a control program for controlling the operation of the controller 8. This controller 8 is, as shown in FIG. 8, electrically connected to the air delivery fan 3, the left-right wind direction plate 5, the up-down wind direction plate 6, and the auxiliary up-down wind direction plate 7.
When, in the cooling operation, driving in the horizontal blowing mode is set by an instruction input to the remote controller or the like, the controller 8 causes the up-down wind direction plate 6 and the auxiliary up-down wind direction plate 7 to be in the horizontal positions. Furthermore, when, in the cooling operation, the swinging operation of the up-down wind direction plate 6 is set by an instruction input to the remote controller or the like, the controller 8 swings the up-down wind direction plate 6 in the up-down direction within the predetermined range (from the upper limit position to the lower limit position) whereas positions the auxiliary up-down wind direction plate 7 in the upper limit position.
When not driven, the air conditioner 1 is arranged such that the up-down wind direction plate 6 is in the fully-closed position where the outlet port 14 is closed, and the auxiliary up-down wind direction plate 7 is in the fully-closed position where the front end portion of the plate 7 contacts with the second upper wall portion 17. On this account, at the start of the driving, the air conditioner 1 operates in such a way that, opening the up-down wind direction plate 6 and the auxiliary up-down wind direction plate 7 downward from the fully-closed position allows the cold air from the air delivery fan 3 to flow between the up-down wind direction plate 6 and the second upper wall portion 17 and between the auxiliary up-down wind direction plate 7 and the second upper wall portion 17.

[Characteristics of Air Conditioner of Present Embodiment]

The characteristics of the air conditioner of the present embodiment are as follows.
In this air conditioner 1, because in the cooling operation the auxiliary up-down wind direction plate 7 is positioned on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16, the auxiliary up-down wind direction plate 7 is not on the flowing passage of the cold air from the air delivery fan 3. As such, the decrease in the air volume due to the collision of the cold air from the air delivery fan 3 with the auxiliary up-down wind direction plate 7 is prevented.
In this air conditioner 1, because the second upper wall portion 17 extends in a substantially horizontal direction, the auxiliary up-down wind direction plate 7 is easily positioned not to be on the flowing passage of the cold air from the air delivery fan 3.
In the air conditioner 1, the decrease in the air volume is prevented when the wind direction of the cold air blown out from the outlet port 14 is substantially horizontal (during the driving in the horizontal blowing mode).
In the air conditioner 1, the decrease in the air volume is prevented when the wind direction of the cold air blown out from the outlet port 14 is swung in the up-down direction (in the swinging operation of the up-down wind direction plate 6).
In the air conditioner 1, there is a gap between the top surface of the auxiliary up-down wind direction plate 7 and the second upper wall portion 17, and a part of the cold air from the air delivery fan 3 flows above the auxiliary up-down wind direction plate 7. In this regard, because the auxiliary up-down wind direction plate 7 is provided on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16, the volume of the air flowing above the auxiliary up-down wind direction plate 7 is small, with the result that the dispersion of the cold air is restrained.
In the air conditioner 1, even if the auxiliary up-down wind direction plate 7 is in the fully-closed position when the air conditioner 1 is not driven, the auxiliary up-down wind direction plate 7 is opened downward at the start of the cooling operation, and hence a part of the cold air from the air delivery fan 3 flows above the auxiliary up-down wind direction plate 7.
While the embodiment of the present invention has been described, it should be noted that the scope of the invention is not limited to the above-described embodiment. The scope of the present invention is defined by the appended claims rather than the foregoing description of the embodiment, and the present invention is intended to embrace all alternatives, modifications and variances which fall within the scope of the appended claims.
While in the air conditioner of the present embodiment the second upper wall portion 17 extends substantially horizontally, the second upper wall portion 17 may incline upward toward the front or downward toward the front. Also in these cases, in the cooling operation, the effects similar to those of the present embodiment are achieved when the auxiliary up-down wind direction plate 7 is positioned on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16.
In addition to the above, the air conditioner of the present embodiment is arranged such that the auxiliary up-down wind direction plate 7 is in the horizontal position during the driving in the horizontal blowing mode, and the auxiliary up-down wind direction plate 7 is in the upper limit position during the swinging operation of the up-down wind direction plate 6. In this regard, the position of the auxiliary up-down wind direction plate 7 is changeable on condition that the auxiliary up-down wind direction plate 7 is on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16. Furthermore, the auxiliary up-down wind direction plate 7 may not be fixed to a position on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16. The auxiliary up-down wind direction plate 7 may swing on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16.
In addition to the above, the air conditioner of the present embodiment is arranged such that, during the driving in the horizontal blowing mode and the swinging operation of the up-down wind direction plate 6, the auxiliary up-down wind direction plate 7 is provided on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16. In this connection, the effects similar to those of the present embodiment are achieved not only in the driving in the horizontal blowing mode and the swinging operation of the up-down wind direction plate 6 but also in the cooling operation but also when the auxiliary up-down wind direction plate 7 is provided on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16.
In addition to the above, while in the air conditioner of the present embodiment the auxiliary up-down wind direction plate 7 is not controllable by using the remote controller, the auxiliary up-down wind direction plate 7 may be controllable by using the remote controller.
In addition to the above, while the air conditioner of the present embodiment includes the left-right wind direction plate 5, the left-right wind direction plate 5 may not be included.
In addition to the above, while the air conditioner of the present embodiment has, as functions of the air conditioner, "driving in horizontal blowing mode" and "swinging operation", the air conditioner may not have these functions. When the air conditioner does not have the function of "driving in horizontal blowing mode", the auxiliary up-down wind direction plate 7 may be positioned on the second upper wall portion 17 side of the plane S which is the extension of the first upper wall portion 16 when the up-down wind direction plate 6 is positioned substantially horizontally.
In addition to the above, in the dehumidification operation of the air conditioner, actions similar to those in the cooling operation may be performed. On this account, "in the cooling operation" in the present invention encompasses "in the dehumidification operation".

[Industrial Applicability]

The present invention prevents the decrease in the air volume due to the collision of cold air from the air delivery fan with the auxiliary up-down wind direction plate.

[Reference Signs List]

1: INDOOR UNIT (AIR CONDITIONER)
3: AIR DELIVERY FAN
6: UP-DOWN WIND DIRECTION PLATE
7: AUXILIARY UP-DOWN WIND DIRECTION PLATE
13: INLET PORT
14: OUTLET PORT
15: UPPER WALL PORTION
16: FIRST UPPER WALL PORTION
17: SECOND UPPER WALL PORTION

Claims

An air conditioner comprising:
an air delivery fan provided on an air passage which is from an inlet port to an outlet port;

an up-down wind direction plate which is rotatably supported in the vicinity of the outlet port and extends along the length of the outlet port; and

an auxiliary up-down wind direction plate which is rotatably supported above the up-down wind direction plate and extends along the length of the outlet port,

an upper wall portion of the air passage including a first upper wall portion which inclines downward to the front and a second upper wall portion which is provided to the front of the first upper wall portion to widen the air passage,

when a cooling operation is executed or when the air conditioner is not driven, the auxiliary up-down wind direction plate being provided on the second upper wall portion side of a plane which is an extension of the first upper wall portion.
The air conditioner according to claim 1, wherein, the second upper wall portion extends in a substantially horizontal direction or inclines upward toward the front.
The air conditioner according to claim 1 or 2, wherein, the up-down wind direction plate is positioned to be substantiall horizontal.
The air conditioner according to claim 1 or 2, wherein, the up-down wind direction plate is swung in an up-down direction.
The air conditioner according to any one of claims 1 to 3, wherein, a gap is formed between a top surface of the auxiliary up-down wind direction plate and the second upper wall portion.
The air conditioner according to claim 5, wherein, the gap is formed by opening the auxiliary up-down wind direction plate downward.