CN112283796B

CN112283796B - Indoor unit of air conditioner and air conditioner

Info

Publication number: CN112283796B
Application number: CN202010691297.6A
Authority: CN
Inventors: 高桥雅也
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2019-07-25
Filing date: 2020-07-17
Publication date: 2023-12-19
Anticipated expiration: 2040-07-17
Also published as: CN112283796A; JP2021021507A; JP7328816B2

Abstract

The invention provides an indoor unit of an air conditioner and an air conditioner, which can restrain the pressure loss of blown air. The indoor unit includes: an indoor unit main body, an air outlet, an air supply path, and a first louver. The air outlet is provided in at least one of the front surface and the lower surface of the indoor unit main body. The air outlet blows out air. The air supply path is arranged in the indoor unit main body. The air supply path is connected to the air outlet. The first wind direction plate is rotatably provided in the indoor unit main body to open and close the air outlet. The first louver controls the direction of the blown air from the outlet in a state where the outlet is opened. In a state where the air outlet is opened, the air upper end portion of the first louver is located further toward the inside of the indoor unit main body than the air outlet and further toward the outside of the air delivery path.

Description

Indoor unit of air conditioner and air conditioner

Technical Field

The present invention relates to an indoor unit of an air conditioner and an air conditioner.

Background

For example, patent document 1 describes an example of an air conditioner. The indoor unit of the air conditioner described in patent document 1 includes a casing that houses an indoor fan. The housing is provided with an upper wall and a lower wall. The blow-out port and the air passage reaching the blow-out port are formed inside these upper and lower walls. In the housing, the air deflector of the switch blow-out port and the auxiliary louver are connected. In the indoor unit described in patent document 1, the wind direction of the wind blown out from the outlet is controlled by the air guide plate and the auxiliary louver.

In the indoor unit described in reference 1, the auxiliary louver plates are provided inside the upper wall and the lower wall. The auxiliary louver is disposed such that wind blown out from the outlet passes through both upper and lower sides of the auxiliary louver. That is, the auxiliary louver is disposed in the air path of the blown air.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2009-103348

Disclosure of Invention

Technical problem to be solved by the invention

In the indoor unit described in reference 1, the end portion of the auxiliary louver is located in the air path of the blown air. As a result, the blown air from the indoor unit collides with the end portion of the auxiliary louver, and there is a problem in that pressure loss occurs.

The main object of the present disclosure is to provide an indoor unit of an air conditioner and an air conditioner capable of suppressing pressure loss of blown air.

Means for solving the problems

An indoor unit of an air conditioner according to an aspect of the present invention includes: indoor unit main body: an air outlet, an air supply path and a first wind direction plate. The air outlet is provided in at least one of the front surface and the lower surface of the indoor unit main body. The air outlet blows out air. The air supply path is arranged in the indoor unit main body. The air supply path is connected to the air outlet. The first wind direction plate is rotatably provided in the indoor unit main body to open and close the air outlet. The first louver controls the direction of the blown air from the outlet in a state where the outlet is opened. In a state where the air outlet is opened, the air upper end portion of the first louver is located further toward the inside of the indoor unit main body than the air outlet and further toward the outside of the air delivery path.

An air conditioner according to an aspect of the present invention includes the indoor unit.

Drawings

Fig. 1 is a schematic exploded perspective view of an indoor unit of an air conditioner according to an embodiment.

Fig. 2 is a schematic cross-sectional view of the indoor unit in a state in which the outlet according to the embodiment is opened.

Fig. 3 is a schematic cross-sectional view of an indoor unit in which a blowout port according to one embodiment is closed.

Fig. 4 is a schematic cross-sectional view of an indoor unit in a cooling operation according to an embodiment.

Fig. 5 is a schematic cross-sectional view of an indoor unit in a heating operation according to an embodiment.

Fig. 6 is a schematic exploded perspective view of a drive mechanism according to an embodiment.

Fig. 7 is a schematic exploded perspective view showing an internal structure of a drive mechanism according to an embodiment.

Fig. 8 is a schematic side view showing an internal structure of a driving mechanism in a state in which a blowout port according to an embodiment is closed.

Fig. 9 is a schematic side view showing an internal structure of a driving mechanism at the time of heating operation according to one embodiment.

Fig. 10 is a schematic side view showing an internal structure of a drive mechanism in the cooling operation according to the embodiment.

Detailed Description

An example of a preferred embodiment of the present invention will be described below. However, the process is not limited to the above-mentioned process,

the following embodiments are merely examples. The present invention is not limited to the following embodiments.

In the present embodiment, the width direction of the indoor unit 2 is set as the left-right direction, the depth direction of the indoor unit 2 is set as the front-rear direction, and the height direction of the indoor unit 2 is set as the up-down direction.

(outline of air conditioner 1)

Fig. 1 is a schematic exploded perspective view of an indoor unit 2 of an air conditioner 1. Fig. 2 is a schematic cross-sectional view of the indoor unit 2 in a state where the outlet 122 is opened. Fig. 3 is a schematic cross-sectional view of a part of the indoor unit 2 in a state in which the air outlet 122 is enlarged to be closed.

The air conditioner 1 includes an indoor unit 2 and an outdoor unit shown in fig. 1 and 2. The indoor unit 2 is provided indoors. The outdoor unit is disposed outdoors. The indoor unit 2 and the outdoor unit each include a heat exchanger. The heat exchanger of the indoor unit 2 and the heat exchanger of the outdoor unit are connected by a refrigerant circuit.

For example, in the cooling operation or the dehumidifying operation, the heat exchanger 3 of the indoor unit 2

0 (refer to fig. 2), the indoor air is cooled while the refrigerant is heated by heat exchange between the relatively high-temperature indoor air and the relatively low-temperature refrigerant. The heated refrigerant is transferred to the heat exchanger of the outdoor unit through the refrigerant circuit. In the heat exchanger of the outdoor unit, heat exchange is performed between the heated refrigerant and low-temperature outdoor air, so that the refrigerant is cooled and the outdoor air is heated.

For example, in the heating operation, in the heat exchanger 30 of the indoor unit 2, the heat exchanger is provided between relatively low-temperature indoor air and relatively high-temperature refrigerant, whereby the indoor air is heated and the refrigerant is cooled. The cooled refrigerant is transferred to the heat exchanger of the outdoor unit through the refrigerant circuit. In the heat exchanger of the outdoor unit, heat exchange is performed between the cooled refrigerant and high-temperature outdoor air, whereby the refrigerant is heated and the outdoor air is cooled.

(outline of indoor unit 2)

As shown in fig. 1 and 2, the indoor unit 2 is fixed to the indoor wall surface 3. As shown in fig. 2, the indoor unit 2 includes an indoor unit main body 10, a blower 20, and a heat exchanger 3

0. A first louver 40 and a second louver 50. The indoor unit body 10 includes a casing 11 and a guide wall 12.

The housing 11 is formed with a housing chamber 11 for housing the blower 20 and the heat exchanger 30

1. The housing 11 includes a front panel 112, a first bottom surface portion 113, and a second bottom surface portion 1

14. A back surface portion 115, a first side wall portion 116 (see fig. 1), and a second side wall portion 117.

The front panel 112 is located in front of the housing chamber 111. The back surface 115 is located behind the housing 111. As shown in fig. 1, the first side wall 116 is located on one side in the width direction (toward the left side of the indoor unit 2) with respect to the housing chamber 111, and the second side wall 117 is located on the other side in the width direction (toward the right side of the indoor unit 2) with respect to the housing chamber 111. One end (toward the left end of the indoor unit 2) of the front panel 112 in the width direction and the back surface 11 are connected by a first side wall 116

5 (toward the left end of the indoor unit 2). The other end in the width direction of the front panel 112 (toward the right side end of the indoor unit 2) and the other end in the width direction of the back surface portion 115 (toward the right side end of the indoor unit 2) are connected by the second side wall portion 117.

As shown in fig. 2, an opening 1 that opens upward is formed in a housing 11

18. The opening 118 is connected to the housing chamber 111. The opening 118 forms a suction port for sucking air into the housing chamber 111.

A first bottom surface portion 113 and a second bottom surface portion 114 are provided below the housing chamber 111. In detail, the first bottom surface portion 113 is located below the front portion of the housing chamber 111. More specifically, the first bottom surface 113 covers the housing chamber 1

11, is located below at least a part of the area located forward of the area where the blower 20 is provided. The second bottom surface portion 114 is located below the rear portion of the housing chamber 111. Specifically, the second bottom surface 114 covers the housing chamber 11

1, is located below at least a part of the area located further rearward than the area where the blower 20 is provided.

The first bottom surface portion 113 includes a horizontal portion 113a and a vertical portion 113b. The horizontal portion 113a extends slightly horizontally rearward from the lower end of the front panel 112. Vertical portion 11

3b extend substantially vertically downward from the rear end of the horizontal portion 113 a. The vertical portion 113b and the horizontal portion 113a form a step.

The blower 20 is accommodated in the accommodating chamber 111. The blower 20 is configured by a fan that rotates around an axis extending in the width direction.

The heat exchanger 30 is accommodated in the accommodating chamber 111. The heat exchanger 30 is disposed in the intake path between the opening 118 and the blower 20.

The guide wall 12 is connected to the housing 11. In the present embodiment, the guide wall 12 and the housing 11 are integrally formed. Substantially the entire guide wall 12 is located in the housing chamber 111 of the housing 11. The air-sending passage 121 and the air-sending port 122 are formed inside the guide wall 12, respectively. That is, the guide wall 12 includes at least one pair of opposing portions, and the air blowing path 1

21 and the air outlet 122 are formed between the opposing portions thereof, respectively. The guide wall 12 is provided over the lower surface of the blower 20 and the housing 11. Thus, the air blowing path 121 is formed to reach the lower surface of the housing 11 from the blower 20. The air outlet 122 is provided at least one of the front surface and the lower surface of the indoor unit body 10. In detail, the blow-out port 122 is located at or below the lower face of the housing 11. Further, the lower surface of the housing 11 is constituted by a first bottom surface portion 113 and a second bottom surface portion 114.

Specifically, in the present embodiment, the guide wall 12 includes the front guide wall 1

23 and a rear guide wall 124. The rear guide wall 124 is disposed rearward of the front Fang Dao toward wall 123. The rear guide wall 124 is disposed away from the front guide wall 123 in the front-rear direction. The air-sending passage 121 and the air outlet 122 are formed by the front guide wall 123, the rear guide wall 124, the first side wall portion 116, and the second side wall portion 1

17 (see fig. 1).

The front guide wall 123 includes an opposing portion 123a and a guide portion 123b. The facing portion 123a faces the outer peripheral surface of the blower 20. The opposing portion 123a extends downward and rearward. The guide portion 123b is connected to the lower end portion of the opposite portion 123 a. The guide portion 123b extends downward and obliquely forward from the lower end portion of the opposing portion 123 a. The guide 123b is substantially flat. The lower end 123b1 of the guide 123b protrudes forward from the first bottom surface 113. A linear concave portion 125 recessed rearward is formed by the lower end portion 123b1 of the guide portion 123b and the first bottom surface portion 113. The linear concave portion 125 extends in the width direction. That is, the guide wall 12 includes a protruding portion protruding forward from the housing 11, and a recessed linear recess 125 is formed rearward between the protruding portion and the housing 11.

The rear guide wall 124 is formed in a slightly curved surface shape. The front end portion of the rear guide wall 124 is connected to the front end portion of the second bottom surface portion 114.

The air outlet 122 is connected to the lower end of the air blowing path 121. The blow-out port 122 is located at the lower end of the guide wall 12. The blow-out port 122 is formed by the lower end of the front guide wall 123, the lower end of the rear Fang Daoxian wall 124, the first side wall portion 116, and the second side wall portion 117.

The indoor unit 2 includes a first louver 40 and a second louver 50. The first louver 40 and the second louver 50 are provided in the indoor unit main body 10 so as to be openable and closable as an opening/closing outlet 122. The first louver 40 and the second louver 50 control the direction of the blown-out air blown out from the air outlet 122, respectively.

Specifically, the first louver 40 may be configured to control the direction of the blown air to be downward. The first wind direction plate 40 is positioned above the blown-out wind, and the blown-out wind contacts the first wind direction plate 40, so that the direction of the blown-out wind can be controlled downward.

In detail, the first louver 40 is mounted to the first bottom surface portion 113 or the front guide wall 123. The first louver 40 is provided to be rotatable in both directions. The first louver 40 is rotatably provided so that a posture in which the air outlet 122 is in an open state and a part of the air outlet 122 (specifically, the air outlet 1

22) is in a closed position.

The rotation axis A1 of the first louver 40 is located forward of the blowout port 122.

The rotation axis A1 of the first louver 40 is located between the wind upper end and the wind lower end of the first louver 40 in a state where the first louver 40 opens the outlet 122. That is, the first louver 40 includes the main portion 41 located further on the windward side than the rotation axis A1 in a state where the first louver 40 opens the blowout port 122, and the base end portion 42 located on the windward side. The length of the wind direction of the blown-out wind along the main portion 41 is longer than the length of the wind direction of the blown-out wind along the base end portion 42. That is, the main unit 41 performs wind direction control. In a state in which the first louver 40 opens the air outlet 122, the base end portion 42 of the first louver 40 is positioned further inside the indoor unit body 10 than the air outlet 122. Specifically, the base end portion 42 is located more upwind than the tip end of the lower end portion 123b 1. The base end 42 is located in the air duct 12

At the outer side of 1. Specifically, the base end portion 42 is located at the outside of the guide wall 12 (the side opposite to the air blowing path 121 of the guide wall 12).

For example, when the wind guiding surface of the wind direction plate is located on the air supply path, the direction of the blown-out air can be controlled, and it is difficult to greatly obstruct the flow of the blown-out air or greatly disturb the airflow. In contrast, when the end of the louver is located on the air supply path, the blown air collides with the end of the louver, and therefore the flow of the blown air is blocked and the airflow is disturbed. Therefore, the pressure loss increases. In the present embodiment, in a state in which the first louver 40 opens the air outlet 122, the base end portion 42 of the first louver 40 is positioned further toward the inside of the indoor unit main body 10 than the air outlet 122 and further toward the outside of the air blowing path 121. This makes it difficult for the blown air to collide with the base end portion. Therefore, the flow of the blown air and the disturbance of the air flow can be suppressed. Thus, occurrence of pressure loss can be suppressed. In addition, leakage of the blown air from between the base end portion 42 and the indoor unit main body 10 can be suppressed. Therefore, the volume of the blown air can be increased.

The length of the wind direction of the blown-out wind along the base end portion 42 (the length of the base end portion 42 in the extending direction of the base end portion 42 in fig. 2) is longer than the lengths of the rotation axis A1 and the blow-out port 122 in the front-rear direction. Thus, the base end 42 of the first louver 40 may be located at the outside of the guide wall 12. That is, the base end portion 42 may be located on the opposite side of the air blowing path 121 of the guide wall 12 (specifically, the front guide wall 123, more specifically, the lower end portion 123b1 of the front guide wall 123). Specifically, in a state where the first louver 40 opens the air outlet 122, the base end portion 42 of the first louver 40 is positioned in the air-sending path 12 with the lower end portion 123b1

1 on the opposite side. That is, at least a part of the base end portion 42 of the first louver 40 may overlap the guide portion 123b in the up-down direction in a state where the first louver 40 opens the air outlet 122.

The rotation axis A1 of the first louver 40 is located in the air blowing path 12 that guides the wall 12

The surface on side 1 extends above the virtual extension surface P1 on the leeward side or outside (upper side in fig. 2) the virtual extension surface P1. That is, the rotation axis A1 is not located further inside (lower side in fig. 2) than the virtual extension plane P1. Specifically, the virtual extension plane P1 is a virtual plane, and extends the surface of the lower end 123b1 of the front guide wall 123 on the side closer to the air duct 121 to the downstream side along the direction orthogonal to the normal line of the surface.

The second louver 50 is disposed so as to control the direction of the blown air to the upper direction. The second wind direction plate 50 is positioned below the blown-out wind, and the blown-out wind contacts the second wind direction plate 50 so as to be controllably set to direct the wind direction of the blown-out wind upward.

In detail, the second louver 50 is provided on the second bottom surface portion 114 or the rear guide wall 124. The second louver 50 is provided to be rotatable in both directions. The second louver 50 is rotatably provided so as to be able to take a posture in which the air outlet 122 is in an open state and a posture in which a part of the air outlet 122 (specifically, a rear part of the air outlet 122) is in a closed state.

In a state where the second louver 50 opens the air outlet 122, the windward end portion of the second louver 50 is located at the outside of the guide wall 12 (the side opposite to the air blowing path 121 of the guide wall 12).

The rotation axis A2 of the second louver 50 is located further rearward than the blowout port 122. The rotary shaft A2 is located at the windward end of the second louver 50 in a state where the second louver 50 opens the blowout port 122. The wind upper end of the second louver 50 overlaps the rear guide wall 124 in the up-down direction.

The rotation axis A2 is located above the virtual extension plane P2 extending the plane of the rear guide wall 124 on the side of the air duct 121 to the lower side of the wind, or outside the virtual extension plane P2 (lower side in fig. 2). That is, the rotation axis A2 is not located further inside (upper side in fig. 2) than the virtual extension plane P2. Specifically, the virtual extension surface P2 is a virtual plane that extends a surface of the lower end portion of the rear guide wall 124 on the side of the air duct 121 to the downstream side in a direction perpendicular to the normal line of the surface.

Fig. 3 is a schematic cross-sectional view of the indoor unit 2 when the operation is stopped. As shown in the figure 3 of the drawings,

in a state where the first louver 40 and the second louver 50 close the air outlet 122, the front end portion (rear end portion in fig. 3) of the first louver 40 is closest to the front end portion (front end portion in fig. 3) of the second louver 50. In a state where the first louver 40 and the second louver 50 close the air outlet 122, the front end portion of the first louver 40 and the front end portion of the second louver 50 face each other.

Fig. 4 is a schematic cross-sectional view of the indoor unit 2 during cooling operation. As shown in figure 4 of the drawings,

in the cooling operation, the first louver 40 assumes a posture in which the entire first louver 40 is positioned above the virtual extension plane P1. The second louver 50 takes a posture in which at least the front end portion (downstream side end portion) of the second louver 50 is located above the virtual extension plane P2. The first wind vane 40 and the second wind vane 50 are substantially parallel. Thereby, the blown air from the air outlet 122 contacts the second louver 50 and is guided upward by the second louver 50.

Fig. 5 is a schematic cross-sectional view of the indoor unit 2 during the heating operation. As shown in figure 5 of the drawings,

in the heating operation, the first louver 40 takes a posture in which the main portion 41 is located below the virtual extension plane P1. The second louver 50 takes a posture in which the entire second louver 50 is positioned lower than the virtual extension plane P2. First wind deflector 4

0 and the second wind direction plate 50 are substantially parallel. Thereby, the blown air from the air outlet 122 contacts the first louver 40, and is guided downward by the first louver 40.

Fig. 6 is a schematic exploded perspective view of the drive mechanism 60 in the present embodiment. Fig. 7 is a schematic exploded perspective view showing the internal structure of the drive mechanism 60 in the present embodiment. Fig. 8 is a schematic side view showing the internal structure of the driving mechanism 60 in a state where the air outlet is closed in the present embodiment. Fig. 9 is a schematic side view showing the internal structure of the drive mechanism 60 at the time of heating operation in the present embodiment. Fig. 10 is a schematic side view showing the internal structure of the drive mechanism 60 during the cooling operation in the present embodiment.

Next, the driving mechanism 60 of the first louver 40 and the second louver 50 in the present embodiment will be described in detail with reference to fig. 1 and fig. 6 to 10.

As shown in fig. 1, the indoor unit 2 includes a driving structure 60. The driving mechanism 60 is a mechanism that drives the first louver 40 and the second louver 50. Specifically, the driving mechanism 60 rotates the first louver 40 and the second louver 50.

The driving mechanism 60 includes: a first driving mechanism 60a mounted on the inner surface of the first side wall 116; the second driving mechanism is mounted on the inner surface of the second side wall 117. The first driving mechanism 60a is located on one side (right side in fig. 1) of the first louver 40 and the second louver 50 in the width direction of the indoor unit 2, and the second driving mechanism is located on the other side (left side in fig. 1) of the first louver 40 and the second louver 50 in the width direction of the indoor unit 2.

The first drive mechanism 60a has substantially the same structure as the second drive mechanism. Thus, in the present embodiment, the first driving mechanism 60a will be described, and the description of the first driving mechanism 60a will be referred to as the second driving mechanism.

The first driving mechanism 60a includes a housing 61 shown in fig. 6, a first driving portion 62 shown in fig. 7, a second driving portion 63, a first power source 64a shown in fig. 6, and a second power source 64b. In the present embodiment, specifically, the first power source 64a and the second power source 64b are each constituted by an electric motor.

As shown in fig. 6, the housing 61 includes a main body 61a and a cover 61b. As shown in fig. 7, a concave receiving space 61c is formed in the main body 61a. As shown in fig. 6, the cover 61b is attached to the main body 61a so as to cover the accommodating space 61c.

As shown in fig. 7, the first driving portion 62 and the second driving portion 63 are disposed in the housing space 61c. The first driving portion 62 includes a gear 62a and a gear 62b. The housing 61 rotatably supports each of the gear 62a and the gear 62b. The gear 62a is connected to a first power source 64a (see fig. 6) attached to the outside of the housing 61.

The gear 62a is rotationally driven by a first power source 64 a. Gear 62b meshes with gear 62 a. Thus, the gear 62b rotates with the rotation of the gear 62 a. Arm 6

One side end 65a1 of 5a is rotatably provided to the gear 62b. As shown in fig. 8, the other end 65a2 of the arm 65a extends from the inside of the housing 61 to the outside of the housing 61. The other end 65a2 of the arm 65a is rotatably provided at a portion located on the front end side (rear side in fig. 8) of the rotation axis A1 of the first louver 40.

As shown in fig. 7, the second driving portion 63 includes a gear 63a and a gear 63b. The housing 61 rotatably supports each of the gear 63a and the gear 63b. The gear 63a is connected to a second power source 64b (see fig. 6) attached to the outside of the housing 61.

The gear 63a is rotationally driven by the second power source 64b. Gear 63b meshes with gear 63 a. Thereby, the gear 63b rotates with the rotation of the gear 63 a. Arm 6

One side end 65b1 of 5b is rotatably provided to the gear 63b. As shown in fig. 8, the other end 65b2 of the arm 65b extends from the inside of the housing 61 to the outside of the housing 61. The other end 65b2 of the arm 65b is rotatably provided at a portion located on the front end side (front side in fig. 8) of the rotation axis A2 of the second louver 50.

In the indoor unit 2, the first louver 40 and the second louver 50 are rotated by the power of the first power source 64a and the second power source 64b. Specifically, when the gear 62a is rotationally driven by the first power source 64a, the gear 62b rotates with the rotation of the gear 62 a. For example, when the gear 62a rotates counterclockwise (left turn) in fig. 7 and 8, the gear 62b rotates clockwise (right turn) in fig. 7 and 8. By the rotation of the gear 62b, the arm 65a is pushed forward (left side in fig. 7 and 8). As a result, as shown in fig. 9 and 10, the first louver 40 is rotationally driven in the clockwise direction (rightward rotation) in fig. 9 and 10.

The gear 63a is rotationally driven by the second power source 64b, and the gear 63b rotates as the gear 63a rotates. For example, when the gear 63a rotates clockwise (rightward) in fig. 7 and 8, the gear 63b rotates counterclockwise (leftward) in fig. 7 and 8. The arm 65b is pushed forward (left side in fig. 7 and 8) by the rotation of the gear 63b. As a result, as shown in fig. 9 and 10, the second louver 50 is rotationally driven in the counterclockwise direction (left turn) in fig. 9 and 10.

(operation of air conditioner 1)

Next, the operation of the air conditioner 1 will be described. In a state where the power supply of the air conditioner 1 is turned off, as shown in fig. 3, the air outlet 122 is closed by the first louver 40 and the second louver 50. The air outlet 122 is not practically exposed from the first louver 40 and the second louver 50.

For example, when the user operates an operation element such as a remote controller and turns on the power supply of the air conditioner 1, the first louver 40 and the second louver 50 rotate as shown in fig. 2 and 4, and the air outlet 122 is opened. For example, when the user selects the cooling operation or the dehumidifying operation, as shown in fig. 4, the first louver 40 is rotationally driven such that substantially the entire first louver 40 is located above the virtual extension plane P1, and the second louver 50 is rotationally driven such that the leeward portion of the second louver 50 is located above the virtual extension plane P1. For example, when the user selects the heating operation, as shown in fig. 5, the first louver 40 is rotationally driven such that the main portion 41 of the first louver 40 is located further below the virtual extension plane P1, and the second louver 50 is rotationally driven such that substantially all of the second louver is located further below the virtual extension plane P2. The air outlet 122 is exposed by the rotational driving of the first louver 40 and the second louver 50.

Next, the driving of the blower 20 and the heat exchangers provided in the indoor unit 2 and the outdoor unit, respectively, are started. By driving the blower 20, air in the room is supplied into the housing chamber 111 through an air inlet (see fig. 2) formed by the opening 118. The supplied air is cooled or heated by the heat exchanger 30, and then blown out from the air outlet 122 into the room via the blower 20 and the air duct 121. The wind direction of the blown wind is controlled by the first wind direction plate 40 and the second wind direction plate 50. Specifically, during the cooling operation or the dehumidifying operation, the blown air passes through the first louver 40 and the second louver 5

0 to be directed downward. During the heating operation, the blown air is guided upward by the first louver 40 and the second louver 50. In the operating state, at least one of the first louver 40 and the second louver 50 may also rock.

When the user operates the operation tool and turns off the power supply to the air conditioner 1, the blower 20 is stopped from being driven, the heat exchangers provided in the indoor unit 2 and the outdoor unit are respectively turned, the first louver 40 and the second louver 50 are rotated, and the air outlet 122 is closed.

As described above, in the indoor unit 2, the base end portion 42 of the first louver 40 is positioned further toward the inside of the indoor unit main body 10 than the air outlet 122 and further toward the outside of the air blowing path 121 in the state where the air outlet 122 is opened by the first louver 40. This makes it difficult for the base end 42 to block the wind from being blown out. In addition, leakage of the blown air from between the base end portion 42 and the indoor unit main body 10 can be suppressed. Therefore, the pressure loss of the blown air can be suppressed. In addition, it is difficult to lose the rectifying property of the blown air, and the blown air can be blown to a farther place.

From the viewpoint of suppressing the pressure loss of the blown air, it is preferable that the rotation axis A1 of the first louver 40 is located outside the virtual extension plane P1 (on the side opposite to the air blowing path).

From the same point of view, it is preferable that the windward end portion (the rear end portion in fig. 2 and 3) of the second louver 50 be located at the outer side of the guide wall 12. The rotation axis A2 of the second louver 50 is preferably located at the outer side of the guide wall 12.

In the indoor unit 2, the base end 42 located on the windward side of the first louver 40 may be located on the opposite side of the air blowing path 121 of the guide wall 12. By positioning the base end portion 42 on the opposite side of the air blowing path 121 of the guide wall 12, air leakage from between the guide wall 12 and the first louver 40 can be suppressed. Therefore, the pressure loss of the blown-out air can be suppressed and the wind speed of the blown-out air can be increased.

In the indoor unit 2, a first louver 40 at an upper portion of the switch outlet 122 and a second louver 50 at a lower portion of the switch outlet 122 are provided. This can improve the degree of freedom in controlling the direction of the blown air. In addition, for example, compared with the case where one louver is provided, the first louver 40 and the second louver 50 can be miniaturized. Therefore, the drive mechanism of the first louver 40 and the drive mechanism of the second louver 50 can be miniaturized.

From the viewpoint of downsizing the first louver 40 and the second louver 50, it is preferable that the front end portion of the first louver 40 and the front end portion of the second louver 50 are closest to each other in a state where the air outlet 122 is closed, and it is more preferable that the front end portion of the first louver 40 and the front end portion of the second louver 50 face each other.

In the indoor unit 2, a first driving unit 62 that drives the first louver 40 and a second driving unit 63 that drives the second louver 50 are housed in a common casing 61.

Thereby, the positional accuracy of the first driving portion 62 and the second driving portion 63 can be improved.

Accordingly, the first and second wind direction plates 40 and 50 can be driven with high accuracy. Specifically, the magnitude of the angle formed by the first wind deflector 40 and the second wind deflector 50 can be suppressed from deviating from a desired angle.

Further, by housing the first driving unit 62 and the second driving unit 63 in the common housing 61, the driving mechanism 60 can be miniaturized.

In the above embodiment, the formation of the air-sending passage 1 by the front guide wall 123 and the rear guide wall 124, the first side wall portion, and the second side wall portion 117 has been described

21 and a blowout port 122. In this way, the guide wall may also form, together with other components, a blowing path and a blowing opening. In other words, a part of the wall portion forming the air supply passage and the air outlet may be formed by the guide wall. However, the entire wall portion forming the air supply passage and the air outlet may be formed of the guide wall. In other words, the air-sending passage and the air-blowing port may be formed only by the guide wall.

In the above embodiment, the example has been described in which the first louver 40 and the second louver 50 are included with the tip portions facing each other in the state where the air outlet 122 is closed.

However, the present invention is not limited to this configuration. For example, the indoor unit may include only one louver. In this case, for example, one wind direction plate may be provided so as to be located above the blown wind, or may be provided so as to be located below the blown wind. For example, the indoor unit may include three or more wind direction plates. In this case, for example, one of three or more wind direction plates may be disposed above the blown wind, and one of the other wind direction plates may be disposed below the blown wind. For example, the first louver and the second louver may be provided in a state where the first louver and the second louver close the air outlet, and at least the tip end portion of the second louver may be covered with the first louver. For example, in a state where the first louver and the second louver close the air outlet, the first louver and the second louver may be provided, and at least the front end portion of the first louver may be covered with the second louver.

The wind deflector may also be arranged non-rotatably, for example.

In the above embodiment, an example was described in which the rotation axis A1 of the first louver 40 is located between the wind upper end and the wind lower end of the first louver. However, the present invention is not limited to this structure. For example, the rotation shaft of the first louver may be provided at the wind upper end portion of the first louver. That is, substantially the entire first louver may be positioned under the blown air from the rotation axis of the first louver.

In the above embodiment, an example in which the first power source 64a that supplies power to the first driving portion 62 and the second power source 64b that supplies power to the second driving portion 63 are provided separately is described. However, the present invention is not limited to this structure. For example, a power source that supplies power to the first driving portion and a power source that supplies power to the second driving portion may be integrally provided. That is, power may be supplied from one power source to both the first driving section and the second driving section. In this way, by supplying power to the first driving portion and the second driving portion from the common power source, the first louver and the second louver can be driven with higher accuracy. However, from the viewpoint of improving the control flexibility of the first louver and the second louver, it is preferable to provide power sources for the first driving portion and the second driving portion, respectively.

In the above embodiment, an example was described in which the driving mechanism 60 includes two driving mechanisms of the first driving mechanism 60a and the second driving mechanism. However, the present invention is not limited to this structure. For example, the indoor unit may be configured to drive the first louver and the second louver by one drive mechanism located on one side of the first louver and the second louver in the width direction of the indoor unit.

Description of the reference numerals

1. Air conditioner

2. Indoor machine

10. Indoor unit main body

121. Air supply path

122. Blowing-out port

12 guide wall

40 first wind deflector

50 second wind direction plate

Claims

1. An indoor unit of an air conditioner, comprising:

an indoor unit main body;

a blow-out port provided on at least one of a front surface and a lower surface of the indoor unit main body, and configured to blow out air;

a ventilation path which is provided in the indoor unit main body and is connected to the air outlet; and

a first louver rotatably provided in the indoor unit main body to open and close the outlet, and controlling a direction of the air blown out from the outlet in a state where the outlet is opened,

the indoor unit main body is provided with a guide wall which forms the air supply passage and the air outlet inside,

the casing of the indoor unit main body is provided with a bottom surface part, wherein the bottom surface part comprises a horizontal part extending backwards from the lower end part of the front panel and a vertical part extending downwards from the rear end part of the horizontal part;

a recessed portion recessed rearward is formed in a front guide wall located forward of the guide wall by a lower end portion protruding forward from the bottom surface portion, the horizontal portion, and the vertical portion;

in a state where the air outlet is opened, a windward end portion of the first louver is positioned further upstream than the lower end portion of the front guide wall, and overlaps the lower end portion from above in the concave portion, so that the windward end portion is positioned further toward the inside of the indoor unit main body than the air outlet and further toward the outside of the air supply passage.

2. The indoor unit of an air conditioner according to claim 1, wherein,

in a state where the first louver opens the air outlet, an end portion of the first louver on the windward side may be located on a side opposite to the air supply path of the guide wall.

3. The indoor unit of an air conditioner according to claim 1, wherein,

the rotation axis of the first louver is located on a virtual extension surface extending the surface of the guide wall on the air supply path side to the underside of the wind or on the outer side of the virtual extension surface.

4. The indoor unit of an air conditioner according to claim 2, wherein,

the first wind direction plate is rotatably arranged on the indoor unit main body to open and close the upper side part of the air outlet,

the indoor unit of the air conditioner further comprises:

and a second louver rotatably provided on the indoor unit main body to open and close a lower portion of the air outlet.

5. The indoor unit of an air conditioner according to claim 4, wherein,

in a state where the second louver opens the blowout port, an end portion of the windward side of the second louver is located at an outer side of the guide wall.

6. The indoor unit of an air conditioner according to claim 1, wherein,

the first louver is rotatably provided to the indoor unit main body so as to open an upper side portion of the blowout port;

the indoor unit of the air conditioner further comprises:

7. The indoor unit of an air conditioner according to claim 6, wherein,

8. An indoor unit of an air conditioner according to any one of claims 4 to 7,

in a state where the air outlet is closed, the front end portion of the first louver and the front end portion of the second louver are closest to each other.

9. The indoor unit of an air conditioner according to any one of claims 4 to 7, further comprising: the driving mechanism is used for driving the driving mechanism,

the driving mechanism includes:

a first driving unit that rotates the first louver;

a second driving unit that rotates the second louver; and

and a housing accommodating the first driving unit and the second driving unit.

10. An air conditioner, comprising: the indoor unit of any one of claims 1 to 9.