CN112393324B - Indoor unit of air conditioner and air conditioner - Google Patents

Abstract

An indoor unit of an air conditioner includes an indoor unit main body and a first louver. An air outlet is formed on the indoor unit main body. The first wind vane has a first wind direction face. The first wind direction plate can control the direction of the blown-out wind blown out from the air outlet. The first wind direction face includes a convex face portion and a concave face portion. The convex surface portion protrudes toward the blowout wind side. The concave portion is concave toward a side opposite to the blown air.

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, JP-A2007-93092 discloses an example of an air conditioner.

The air conditioner disclosed in japanese patent application laid-open No. 2007-93092 includes a louver for opening and closing an air outlet. The wind direction in the up-down direction is controlled by this wind deflector.

Disclosure of Invention

An air conditioner has a demand for appropriately controlling the direction of blown air.

The main object of the present disclosure is to provide an indoor unit of an air conditioner, which can appropriately control the direction of blown air.

An indoor unit of an air conditioner according to an aspect of the present invention includes an indoor unit main body and a first louver. An air outlet is formed on the indoor unit main body. The first wind vane has a first wind direction face. The first wind direction plate can control the direction of the blown-out wind blown out from the air outlet. The first wind direction face includes a convex face portion and a concave face portion. The convex surface portion protrudes toward the blowout wind side. The concave portion is concave toward a side opposite to the blown air.

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

Drawings

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

Fig. 2 is a schematic cross-sectional view of the indoor unit in a state where the air outlet is opened in the first embodiment.

Fig. 3 is a schematic cross-sectional view of a first louver of the indoor unit in the first embodiment.

Fig. 4 is a schematic cross-sectional view of an enlarged part of the indoor unit in which the air outlet is closed in the first embodiment.

Fig. 5 is a schematic cross-sectional view of an enlarged part of the indoor unit in the cooling operation of the first embodiment.

Fig. 6 is a schematic cross-sectional view of an enlarged part of the indoor unit in the heating operation of the first embodiment.

Fig. 7 is a schematic perspective view of the driving mechanism in the first embodiment.

Fig. 8 is a schematic perspective view showing the internal structure of the drive mechanism in the first embodiment.

Fig. 9 is a schematic side view showing the internal structure of the driving mechanism in the state where the air outlet is closed in the first embodiment.

Fig. 10 is a schematic side view showing the internal structure of the driving mechanism in the heating operation in the first embodiment.

Fig. 11 is a schematic side view showing the internal structure of the driving mechanism in the cooling operation in the first embodiment.

Fig. 12 is a schematic cross-sectional view of a part of the indoor unit in the cooling operation in the second embodiment.

Fig. 13 is a schematic cross-sectional view showing a part of the indoor unit in the heating operation in the second embodiment.

Fig. 14 is a schematic cross-sectional view of a part of the indoor unit in which the air outlet is closed in the third embodiment.

Fig. 15 is a schematic cross-sectional view of a part of an indoor unit in the cooling operation in the third embodiment.

Fig. 16 is a schematic cross-sectional view showing a part of the indoor unit in the heating operation in the third embodiment.

Fig. 17 is a schematic cross-sectional view of a part of the indoor unit in which the air outlet is closed in the fourth embodiment.

Fig. 18 is a schematic cross-sectional view of a part of the indoor unit in the cooling operation in the fourth embodiment.

Fig. 19 is a schematic cross-sectional view showing a part of the indoor unit in the heating operation of the fourth embodiment.

Detailed Description

An example of a preferred embodiment of the present invention will be described below. However, the following embodiments are examples only. The present invention is not limited by the following embodiments.

In the following description, the width direction of the indoor unit 2 is sometimes referred to as the left-right direction, the depth direction of the indoor unit 2 is sometimes referred to as the front-rear direction, and the height direction of the indoor unit 2 is sometimes referred to as the up-down direction.

(first embodiment)

(outline of air conditioner 1)

Fig. 1 is a schematic 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 air outlet 12 is opened. Specifically, fig. 2 is a schematic cross-sectional view of the indoor unit 2 at the time of rated operation. Fig. 3 is a schematic cross-sectional view of the first louver 40.

The air conditioner 1 includes an indoor unit 2 and an outdoor unit (not shown) as shown in fig. 1 and 2. The indoor unit 2 is provided indoors. The outdoor unit is installed outdoors. The indoor unit 2 and the outdoor unit each include a heat exchanger. The heat exchanger 30 of the indoor unit 2 and a heat exchanger (not shown) of the outdoor unit are connected by a refrigerant circuit.

For example, in the cooling operation or the dehumidifying operation, the heat exchanger 30 (see fig. 2) of the indoor unit 2 exchanges heat between relatively high-temperature inside air and relatively low-temperature refrigerant, so that the inside air is cooled and the refrigerant is heated. 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 outside air, so that the refrigerant is cooled and the outside air is heated.

For example, in the heating operation, the heat exchanger 30 of the indoor unit 2 exchanges heat between relatively low-temperature inside air and relatively high-temperature refrigerant, so that the inside 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 outside air, so that the refrigerant is heated and the outside air is cooled.

(outline of indoor unit 2)

As shown in fig. 1 and 2, the indoor unit 2 is fixed to, for example, the indoor wall surface 3. As shown in fig. 2, the indoor unit 2 includes an indoor unit main body 10, a blower 20, a heat exchanger 30, 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 forms a housing chamber 111 that houses the blower 20 and the heat exchanger 30. The housing 11 includes a front panel 112, a bottom wall portion including a first bottom surface portion 113 and a second bottom surface portion 114, a rear 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 in the width direction of the front panel 112 (toward the left end of the indoor unit 2) and one end in the width direction of the back surface 115 (toward the left end of the indoor unit 2) are connected by a first side wall 116. 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 a second side wall portion 117.

As shown in fig. 2, an opening 118 that opens upward is formed in the housing 11. 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 bottom wall portion is provided below the housing chamber 111. The bottom wall portion includes a first bottom surface portion 113 and a second bottom surface portion 114. Specifically, the first bottom surface 113 is located below the front portion of the housing chamber 111. More specifically, the first bottom surface portion 113 covers at least a part of the housing chamber 111 below a region located forward of the region where the blower 20 is provided. The 2 nd bottom surface 114 is located below the rear portion of the housing chamber 111. Specifically, the second bottom surface 114 covers at least a part of the housing chamber 111 located at the rear side of the region where the blower 20 is provided.

The first bottom surface portion 113 has a horizontal portion 113a and a vertical portion 113b. The horizontal portion 113a extends substantially horizontally rearward from the lower end portion of the front panel 112. The vertical portion 113b extends substantially vertically downward from the rear end portion of the horizontal portion 113 a. A step is formed by these vertical portions 113b and horizontal portions 113 a.

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 is integrally formed with the housing 11. The guide wall 12 is substantially entirely located in the housing chamber 111 of the housing 11. The guide wall 12 forms an air supply passage 121 and an air outlet 122 on the inner side, respectively. That is, the guide wall 12 has at least a pair of opposed portions, and the air supply duct 121 and the air outlet 122 are formed between the opposed portions. The guide wall 12 is provided across the blower 20 and the lower surface of the housing 11. Therefore, the air flow path 121 is formed so as to reach the lower surface of the housing 11 from the blower 20. The air outlet 122 is located at or below the lower surface of the frame 11. 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 has a front guide wall 123 and a rear guide wall 124. The rear guide wall 124 is disposed rearward of the front guide wall 123. The rear guide wall 124 is spaced apart from the front guide wall 123. The front guide wall 123 and the rear guide wall 124, and the first side wall 116 and the second side wall 117 (see fig. 1) form the air supply passage 121 and the air outlet 122.

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 rearward in the downward direction. The guide portion 123b is connected to a lower end portion of the opposite portion 123 a. The guide portion 123b extends obliquely forward downward from the lower end portion of the opposing portion 123 a. The guide portion 123b has a substantially flat plate shape. The lower end 123b1 of the guide portion 123b protrudes forward from the first bottom surface portion 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 has a protruding portion protruding forward from the housing 11, and a recessed portion recessed rearward is formed between the protruding portion and the housing. The rear guide wall 124 is formed in a substantially curved surface shape. The front end of the rear guide wall 124 is connected to the front end of the 2 nd bottom surface 114.

The air outlet 122 is located at the lower end of the air supply path 121. The air outlet 122 is located at the lower end of the guide wall 12. The air outlet 122 is formed by the lower end of the front guide wall 123, the lower end of the rear guide 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 wind direction plate 40 and the second wind direction plate 50 are each a means for controlling the direction of the blown-out wind blown out from the air outlet 122.

The first wind direction plate 40 is located above the blown wind. The first louver 40 is mounted on the first bottom surface portion 113 or the front guide wall 123. In a state where the air outlet 122 is opened by the first louver 40, the windward end of the first louver 40 is located outside the guide wall 12 (on the opposite side to the air supply path 121 of the guide wall 12).

The first louver 40 is provided to be capable of bidirectional rotation. The first louver 40 is rotatably provided in a posture (posture shown in fig. 2) capable of bringing the air outlet 122 into an open state and a posture (posture shown in fig. 4) capable of bringing a part of the air outlet 122 (specifically, a front part of the air outlet 122) into a closed state.

The rotation axis A1 of the first louver 40 is located forward of the air outlet 122. The rotation axis A1 of the first louver 40 is located between the windward end and the leeward end of the first louver 40 in a state where the first louver 40 opens the air outlet 122. That is, the first louver 40 has a main body 41 and a base end 42 on the windward side, and the main body 41 is located on the leeward side from the rotation axis A1 in a state where the first louver 40 opens the air outlet 122. The length of the wind direction of the blown-out wind along the main body 41 is longer than the length of the wind direction of the blown-out wind along the base end 42. The main body 41 mainly performs wind direction control.

The length of the wind direction of the blown 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 length in the front-rear direction along the rotation axis A1 and the air outlet 122. Accordingly, the base end 42 of the first louver 40 may be located outside 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 air outlet 122 is opened by the first louver 40, the base end portion 42 of the first louver 40 is located on the opposite side of the air blowing path 121 from the lower end portion 123b 1. 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 above the virtual extension plane P1 extending the surface of the guide wall 12 on the air blowing path 121 side to the leeward side or further outside (upper side in fig. 2) the virtual extension plane P1. That is, the rotation axis A1 is not located further inside (lower side in fig. 2) of the virtual extended surface P1. Specifically, the virtual extension plane P1 is a virtual plane extending the surface of the lower end 123b1 of the front guide wall 123 on the air blowing path 121 side to the downstream side along a direction perpendicularly intersecting the normal line of the surface.

The first wind vane 40 has a first wind direction surface 40a and a back surface 40b. In a state in which the first louver 40 opens the air outlet 122 (for example, a state shown in fig. 2), the first louver 40a is located on the air outlet side, and the back surface 40b is located on the opposite side to the blown air. Therefore, the direction of the blown air blown out from the air outlet 122 is mainly controlled by the first air-direction surface 40a. That is, the first wind direction surface 40a is a surface capable of controlling the direction of the blown-out wind blown out from the air outlet 122. The first wind direction surface 40a is provided across the main body 41 and the base end 42.

Next, the first wind direction surface 40a will be described in detail mainly with reference to fig. 3.

As shown in fig. 3, the first wind direction surface 40a includes a convex portion 40a1 and a concave portion 40a2. The convex portion 40a1 protrudes toward the blowing air side (lower side in fig. 3). The concave portion 40a2 is concave toward the side opposite to the blown air (upper side in fig. 3). In a state where the first louver 40 opens the air outlet 122, the convex portion 40a1 is located relatively on the upwind side (right side in fig. 3), and the concave portion 40a2 is located relatively on the downwind side (left side in fig. 3). In the present embodiment, the convex portion 40a1 and the concave portion 40a2 are provided adjacently along the wind direction of the blown air.

As shown in fig. 3, in the rated operation, the first louver 40 is disposed such that the top of the convex portion 40a1 is in contact with the virtual extension plane P1.

The radius of curvature (R1) of the convex portion 40a1 is larger than the radius of curvature (R2) of the concave portion 40a2. On the other hand, the length (L1) of the direction of the blown air along the convex surface portion 40a1 is shorter than the length (L2) of the direction of the blown air along the concave surface portion 40a2. That is, in the convex portion 40a1 and the concave portion 40a2, the radius of curvature of the short surface is larger than the radius of curvature of the long surface in the length along the wind direction of the blown air.

The radius of curvature of the convex portion is a radius of curvature when the entire convex portion is approximated to an arc surface. The radius of curvature of the concave portion means a radius of curvature when the entire concave portion is approximated to an arc surface.

The shape of the back surface 40b is not particularly limited. The back surface 40b may be, for example, substantially planar or curved. Specifically, the back surface 40b is formed on a convex surface protruding in the same direction as the concave surface portion 40a2. Therefore, in the first louver 40, the convex portion 40A1 is provided, the portion closer to the rotation axis A1 is relatively thick, the concave portion 40a2 is provided, and the portion farther from the rotation axis A1 is relatively thin. In this way, by forming the portion closer to the rotation axis A1 to be relatively thick and forming the portion farther from the rotation axis A1 to be relatively thin, the distance between the center of gravity of the first louver 40 and the rotation axis A1 can be shortened.

As shown in fig. 2, the second louver 50 is disposed below the blown air.

The second louver 50 is mounted on the second bottom surface portion 114 or the rear guide wall 124. The second louver 50 is provided to be capable of bidirectional rotation. The second louver 50 is rotatably provided so that a posture of putting the air outlet 122 in an open state and a posture of putting a part of the air outlet 122 (specifically, a rear part of the air outlet 122) in a closed state can be taken.

In a state where the second louver 50 opens the air outlet 122, the windward end portion of the second louver 50 is located outside the guide wall 12 (specifically, the rear guide wall 124) (on the opposite side of the air supply path 121 of the guide wall 12 (specifically, the rear guide wall 124)).

The rotation axis A2 of the second louver 50 is located further rearward than the air outlet 122. The rotation shaft A2 is located at the windward end of the second louver 50 in a state where the second louver 50 opens the air outlet 122. The windward 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 surface of the rear guide wall 124 on the air blowing path 121 side to the leeward side or further outside (lower side in fig. 2) the virtual extension plane P2. That is, the rotation axis A2 is not located further inside (upper side in fig. 2) of the virtual extension plane P2. Specifically, the virtual extension plane P2 is a virtual plane extending the surface of the lower end portion of the rear guide wall 124 on the air blowing path 121 side to the downstream side along a direction perpendicularly intersecting the normal line of the surface.

The second louver 50 has a second louver face 50a and a rear face 50b. In a state in which the second louver 50 opens the air outlet 122 (for example, a state shown in fig. 2), the second louver 50a is located on the air outlet side, and the back surface 50b is located on the opposite side to the blown air. Therefore, the direction of the blown air blown out from the air outlet 122 is mainly controlled by the second air-direction surface 50 a. That is, the second wind direction surface 50a is a surface capable of controlling the direction of the blown-out wind blown out from the air outlet 122.

In the present embodiment, the second wind direction surface 50a is substantially planar. The shape of the back surface 50b is not particularly limited. The back surface 50b may be, for example, substantially planar or curved.

As shown mainly in fig. 3, during the rated operation, the convex portion 40a1 is substantially in contact with the virtual extension surface P1, and the concave portion 40a2 is also close to the virtual extension surface P1. That is, at the time of the rated operation, the substantially entire first wind direction surface 40a is close to the virtual extension surface P1.

As shown mainly in fig. 2, at the time of the rated operation, the substantial entirety of the second wind direction surface 50a of the second wind direction plate 50 is close to the virtual extension surface P2.

Therefore, at the time of rated operation, the air-sending passage 121 is substantially extended by the first louver 40 and the second louver 50. Therefore, the wind speed of the blown-out wind can be further increased, and the blown-out wind can be sent to a farther place.

Fig. 4 is a schematic cross-sectional view of a part of the indoor unit 2 (the indoor unit 2 when the operation is stopped) in which the air outlet is enlarged and closed. As shown in fig. 4, 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. 4) of the first louver 40 and the front end portion (front end portion in fig. 4) of the second louver 50 are closest. 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. 5 is a schematic cross-sectional view of a part of the indoor unit 2 in the case of the cooling operation. As shown in fig. 5, in the cooling operation, both the first wind direction plate 40 and the second wind direction plate 50 are configured to extend substantially horizontally. Accordingly, the blown air from the air outlet 122 is guided upward by the first air vane 40 and the second air vane 50.

Specifically, the first louver 40 assumes a posture in which the entire first louver 40 is located above the virtual extension plane P1. In the first wind direction surface 40a of the first wind direction plate 40, the first wind direction plate 40 is arranged such that a portion of the top windward side of the convex surface portion 40a1 is substantially in contact with the virtual extension surface P1. The concave portion 40a2 is spaced apart from 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.

Therefore, during the cooling operation, the blown air from the air outlet 122 is guided upward by the second air-direction surface 50a of the second air-direction plate 50. In addition, the blown air is further guided upward by contact with the convex portion 40a1 of the first air direction surface 40a. In the cooling operation, since the concave portion 40a2 located on the leeward side is spaced apart from the virtual extended surface P1, the concave portion 40a2 does not substantially act on the wind guide, and the convex portion 40a1 mainly acts on the wind guide. The convex portion 40a1 has a shape suitable for guiding the air upward, and the blown air is appropriately guided upward by the convex portion 40a 1.

Fig. 6 is a schematic cross-sectional view of a part of the indoor unit 2 in the heating operation. As shown in fig. 6, during the heating operation, both the first louver 40 and the second louver 50 are disposed so as to extend obliquely downward toward the leeward side.

Specifically, the first louver 40 assumes a posture in which the concave portion 40a2 is located below the virtual extension plane P1 and a part of the convex portion 40a1 is located above the virtual extension plane P1 in the first louver 40a. In the cooling operation, the windward portion is located above the virtual extension plane P1 than the top of the convex portion 40a 1.

The second louver 50 takes a posture in which the entire second louver is positioned further below the virtual extension plane P2. The first wind vane 40 and the second wind vane 50 are substantially parallel. The first wind deflector 40 and the second wind deflector 50 are simultaneously configured to extend in a substantially vertical direction.

Accordingly, the blown air from the air outlet 122 is guided downward by the first louver 40 and the second louver 50. In the first wind direction surface 40a, the blown wind is mainly guided by the concave surface portion 40a2, and the convex surface portion 40a1 does not have much effect on the guiding of the wind. During the heating operation, the portion of the concave portion 40a2 located on the front end side (leeward side) extends in a direction closer to the vertical than the portion located on the base end side (windward side). Accordingly, the blown air is appropriately guided downward by the concave portion 40a2.

As described above, in the present embodiment, the first wind direction surface 40a is provided with the convex surface portion 40a1 protruding toward the blowout wind side and the concave surface portion 40a2 recessed toward the side opposite to the blowout wind. In this way, by providing the convex portion 40a1 that facilitates upward air guiding and the concave portion 40a2 that facilitates downward air guiding on the first air-direction surface 40a, the blown air can be appropriately guided upward and downward by the first air-direction surface 40a. Therefore, the direction of the blown-out wind can be well controlled.

When the blown air is directed upward, the first louver 40 is positioned generally above the virtual extension plane P1, and the first louver 40 is disposed so that the size of the angle of the first louver 40 with respect to the horizontal direction becomes smaller. On the other hand, when the blown air is directed downward, at least a part of the first louver 40 is positioned further below the virtual extension plane P1, and the first louver 40 is disposed so that the size of the constituent angle between the first louver 40 and the vertical direction becomes smaller. Therefore, when the blown air is directed upward, the upwind side portion of the first air direction surface 40a mainly acts on the air guide, whereas when the blown air is directed downward, the downwind side portion of the first air direction surface 40a mainly acts on the air guide. Therefore, the convex portion 40a1 is preferably located on the windward side than the concave portion 40a2.

For example, in the indoor unit 2 provided with the second louver 50 positioned below the blown air, the blown air is mainly directed upward by the second louver 50a of the second louver 50 and mainly directed downward by the first louver 40a of the first louver 40. In this case, the first wind direction surface 40a mainly functions to guide the blown-out wind downward. Thus, as shown in fig. 3, the length (L2) of the concave portion 40a2 is preferably longer than the length (L1) of the convex portion 40a 1. If the length (L2) of the concave portion 40a2 is increased, the length (L1) of the convex portion 40a1 needs to be shortened. From the viewpoint of properly guiding the blown air upward by the short convex portion 40a1, the radius of curvature of the convex portion 40a1 is preferably set to be larger than the radius of curvature of the concave portion 40a2. That is, it is preferable that, in the convex portion 40a1 and the concave portion 40a2, the radius of curvature of the relatively short face is set to be large. In this way, the blown air can be more favorably directed in either one of the upward and downward directions.

In the convex portion 40A1 and the concave portion 40a2, the rotation axis A1 of the first louver 40 is preferably located between the windward end portion and the leeward end portion of the first louver 40, from the viewpoint of greatly changing the contribution ratio of the windward surface provided on the windward side, and in the convex portion 40A1 and the concave portion 40a2, the rotation axis A1 is preferably provided such that at least the windward portion of the windward surface provided on the windward side is located on the windward side than the rotation axis A1. In the present embodiment, specifically, the rotation shaft A1 is provided so as to be located on the windward side of the rotation shaft A1 than the top of the convex surface portion 40 A1. Therefore, for example, when the first wind direction plate 40 is arranged substantially horizontally, the first wind direction surface 40a can be made to play a large role, and the blown wind can be appropriately directed upward. In addition, when the first louver 40 is disposed substantially vertically, the first louver surface 40a can be made less functional, and the blown air can be properly directed downward.

In the indoor unit 2, the windward end of the first louver 40 is provided so as to be located outside the guide wall 12 (specifically, the front guide wall 123). Specifically, the base end portion 42 may be located above the lower end portion 123b1 of the front guide wall 123. Accordingly, leakage of wind from between the first louver 40 and the guide wall 12 can be suppressed. Therefore, the wind speed of the blown-out wind can be increased, and the drop in the air volume of the blown-out wind can be suppressed.

As shown in fig. 3, the first wind direction surface 40a has a concave surface portion 40a2 on the front end side portion and a convex surface portion 40a1 on the base end side portion, and the rear surface 40b has a convex surface portion protruding in the same direction as the concave surface portion 40a2. Therefore, the front end side portion of the first louver 40 is thinner than the base end side portion. Thereby, the distance between the center of gravity of the first louver 40 and the rotation axis A1 is short. Therefore, the force required for driving the first louver 40 is small.

In addition, the shorter the length of the first wind direction surface 40a becomes, the more difficult the wind guiding based on the first wind direction surface 40a becomes. Therefore, the technique of the present embodiment, which can favorably control the direction of the blown air, is particularly suitable for the indoor unit 2 in which the air outlet 122 is blocked by the first louver 40 and the second louver 50, and the first louver 40 and the second louver 50 are short.

Fig. 7 is a schematic perspective view of the driving mechanism 60 in the present embodiment. Fig. 8 is a schematic perspective view showing the internal structure of the driving mechanism 60 in the present embodiment. Fig. 9 is a schematic side view showing the internal structure of the driving mechanism 60 in the state where the air outlet is closed in the present embodiment. Fig. 10 is a schematic side view showing the internal structure of the driving mechanism 60 in the heating operation in the present embodiment. Fig. 11 is a schematic side view showing the internal structure of the driving mechanism 60 in the cooling operation in the present embodiment.

Next, the driving mechanism 60 of the first direction plate 40 and the second direction plate 50 in the present embodiment will be described in detail with reference to fig. 1 and fig. 7 to 11.

As shown in fig. 1, the indoor unit 2 includes a driving mechanism 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 face of the first side wall portion 116 and a second driving mechanism mounted on the inner face of the second side wall portion 117. The first driving mechanism 60a is located on one side (right side in fig. 1) of the indoor unit 2 in the width direction with respect to the first louver 40 and the second louver 50, and the second driving mechanism is located on the other side (left side in fig. 1) of the indoor unit 2 in the width direction with respect to the first louver 40 and the second louver 50.

The first driving mechanism 60a includes a housing 61, a first driving portion 62, a second driving portion 63 shown in fig. 7, a first power source 64a and a second power source 64b shown in fig. 7. 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. 7, the housing 61 includes a main body 61a and a cover 61b. As shown in fig. 8, the main body 61a is formed with a concave receiving space 61c. As shown in fig. 7, the cover 61b is attached to the main body 61a so as to block 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 has a gear 62a and a gear 62b. The gear 62a and the gear 62b are rotatably supported by the housing 61, respectively. The gear 62a is connected to a first power source 64a (refer to fig. 7) mounted on 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. One side end 65a1 of the arm 65a is rotatably mounted on the gear 62b. As shown in fig. 9, 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 portion 65a2 of the arm 65a is rotatably attached to a portion located closer to the front end side (rearward side in fig. 8) than the rotation axis A1 of the first louver 40.

The second driving portion 63 has a gear 63a and a gear 63b. The gear 63a and the gear 63b are rotatably supported on the housing 61, respectively. The gear 63a is connected to a second power source 64b (refer to fig. 7) mounted on the outside of the housing 61. The gear 63a is rotationally driven by a second power source 64b. Gear 63b meshes with gear 63 a. Thus, the gear 63b rotates with the rotation of the gear 63 a. One side end 65b1 of the arm 65b is rotatably mounted on the gear 63b. As shown in fig. 9, 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 portion 65b2 of the arm 65b is rotatably attached to a portion located closer to the front end side (forward side in fig. 8) than the rotation axis A2 of the second louver 50.

In the indoor unit 2, the first louver 40 and the second louver 50 rotate due to the power of the first power source 64a and the second power source 64b. Specifically, if 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, if the gear 62a rotates counterclockwise (rotates leftward) in fig. 8 and 9, the gear 62b rotates clockwise (rotates rightward) in fig. 8 and 9. The arm 65a is pushed forward (left side in fig. 8 and 9) by the rotation of the gear 62b. As a result, as shown in fig. 10 and 11, the first louver 40 is rotationally driven clockwise (rightward rotation) in fig. 10 and 11.

If the gear 63a is rotationally driven by the second power source 64b, the gear 63b rotates with the rotation of the gear 63 a. For example, when the gear 63a rotates clockwise (rightward in fig. 8 and 9, the gear 63b rotates counterclockwise (leftward in fig. 8 and 9). By the rotation of the gear 63b, the arm 65b is pushed out to the front (left side in fig. 8 and 9). As a result, as shown in fig. 10 and 11, the second louver 50 is rotationally driven counterclockwise (to the left in fig. 10 and 11).

As described above, in the indoor unit 2, the first driving portion 62 that drives the first louver 40 and the second driving portion 63 that drives the second louver 50 are housed in the common casing 61. Therefore, the positional accuracy of the first driving portion 62 and the second driving portion 63 can be improved. This enables the first wind deflector 40 and the second wind deflector 50 to 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.

Hereinafter, other examples of preferred embodiments of the present invention will be described. In the following description, members having functions substantially common to those of the first embodiment are denoted by common reference numerals, and description thereof is omitted.

(second embodiment)

Fig. 12 is a schematic cross-sectional view of a part of the indoor unit 2 in the cooling operation in the second embodiment. Fig. 13 is a schematic cross-sectional view showing a part of the indoor unit 2 in the heating operation in the second embodiment.

The second embodiment is different from the first embodiment only in the configuration of the second louver 50. Hereinafter, the configuration of the second louver 50 in the second embodiment will be described mainly with reference to fig. 12 and 13, and the description of the first embodiment will be applied to other configurations.

In the first embodiment, an example in which the second wind direction surface 50a of the second wind direction plate 50 is planar is described. However, the present invention is not limited to this configuration. As shown in fig. 12 and 13, in the second embodiment, the second wind direction surface 50a includes a convex surface portion 50a1 protruding toward the blowout wind side and a concave surface portion 50a2 recessed toward the side opposite to the blowout wind side, as well as the first wind direction surface 40a. The convex portion 50a1 is located on the windward side than the concave portion 50a2.

As shown in fig. 12, at least the upwind side portion (right side portion in fig. 12) of the convex portion 50a1 is located further outside (opposite side to the blown air) the virtual extended surface P2, and the whole of the concave portion 50a2 is located further inside (blown air side) the virtual extended surface P2 during the cooling operation. Therefore, in the second wind direction surface 50a, the concave surface portion 50a2 mainly acts on the wind guiding. Accordingly, the blown air is appropriately guided upward by the concave portion 50a2.

As shown in fig. 13, during the heating operation, the entire second air-direction surface 50a is positioned further outside (on the side opposite to the blown air) the virtual extended surface P2. In the second wind direction surface 50a, a more windward side portion (a base end side portion, an upper side portion in fig. 13) of the top of the convex surface portion 50a1 is substantially in contact with the virtual extension surface P2. Therefore, the blown air is properly guided downward by the windward side portion (the base end side portion, the upper side portion in fig. 13) of the convex portion 50a 1.

As described above, by providing the convex surface portion 50a1 that contributes to upward air guiding and the concave surface portion 50a2 that contributes to downward air guiding in the second air direction surface 50a, the blown air can be appropriately guided upward and downward by the second air direction surface 50 a. This makes it possible to control the direction of the blown air well.

In the first and second embodiments, an example of two wind direction plates provided with the first wind direction plate 40 and the second wind direction plate 50 is described. However, the present invention is not limited to this configuration. For example, three or more wind direction plates may be provided, or one wind direction plate may be provided. In the third embodiment, an example in which three wind direction plates are provided will be described. In the fourth embodiment, an example in which one louver is provided will be described.

(third embodiment)

Fig. 14 is a schematic cross-sectional view of a part of the indoor unit 2 in which the air outlet is closed in the third embodiment. Fig. 15 is a schematic cross-sectional view showing a part of the indoor unit 2 in the cooling operation in the third embodiment. Fig. 16 is a schematic cross-sectional view showing a part of the indoor unit 2 in the heating operation in the third embodiment.

The third embodiment is provided with a third louver 70 in addition to the first louver 40 and the second louver 50.

The third louver 70 is plate-shaped having a louver 70a and a louver 70 b. The third louver 70 is rotatable about the rotation axis A3. The third louver 70 is disposed such that the rotation axis A3 is located outside the air outlet 122 (leeward side than the air outlet 122). As shown in fig. 14, in a state in which the air outlet 122 is closed by the first louver 40 and the second louver 50, the third louver 70 is positioned between the first louver 40 and the second louver 50 and the air outlet 122.

The third louver 70 is shorter than the first louver 40 and the second louver 50. The first louver 40 and the second louver 50 mainly control wind direction, and the third louver 70 assists in controlling wind direction.

As shown in fig. 15, in the cooling operation, the third louver 70 is arranged to extend slightly downward from a substantially horizontal direction toward the leeward side. In the cooling operation, at least the leeward end (left end in fig. 15) of the third louver 70 is located further down-wind than the leeward end (left end in fig. 15) of the second louver 50. Accordingly, in the air outlet 122, the air blown out from the portion on the first louver 40 side is more appropriately guided upward by the third louver 70 than the front end portion of the second louver 50.

As shown in fig. 16, during the heating operation, the third louver 70 is disposed so as to extend slightly forward from substantially vertical toward the leeward side. Accordingly, the blown air is properly directed downward by the third louver 70.

As in the third embodiment, even when three or more wind direction plates are provided, the direction of the blown wind can be controlled well by providing the convex surface portion 40a1 and the concave surface portion 40a2 in the first wind direction surface 40a.

In the third embodiment, an example in which the second wind direction surface 50a is planar is described. However, the present invention is not limited to this configuration. For example, the second wind direction surface 50a may include a convex surface portion 50a1 and a concave surface portion 50a2 as in the second embodiment.

In the third embodiment, an example in which the wind direction surface 70a and the wind direction surface 70b of the third wind direction plate 70 are each planar is described. However, the present invention is not limited to this configuration. The wind direction surface 70a and the wind direction surface 70b may include a convex surface portion and a concave surface portion, respectively. That is, when three or more wind direction plates are provided, the wind direction surfaces of the three or more wind direction plates may include a convex surface portion and a concave surface portion.

From the viewpoint of suppressing a drop in the wind speed or the air volume of the blown-out air, it is preferable to provide only the louver located above or below the blown-out air. That is, it is preferable that only at least one of the first wind deflector 40 and the second wind deflector 50 is provided.

From the viewpoint of better control of the direction of the blown air, it is preferable to provide a third louver 70 located in the path of the blown air in addition to at least one of the first louver 40 and the second louver 50.

(fourth embodiment)

Fig. 17 is a schematic cross-sectional view of a part of the indoor unit 2 in which the air outlet 122 is closed in the fourth embodiment. Fig. 18 is a schematic cross-sectional view showing a part of the indoor unit 2 in the cooling operation in the fourth embodiment. Fig. 19 is a schematic cross-sectional view showing a part of the indoor unit 2 in the heating operation of the fourth embodiment.

As shown in fig. 17 to 19, in the fourth embodiment, only the first louver 40 is provided. As shown in fig. 17, the air outlet 122 is substantially entirely closed by the first louver 40.

As shown in fig. 18, during the cooling operation, the first wind deflector 40 is disposed so as to extend substantially horizontally. The blown air is mainly guided upward by the upwind side portion of the convex surface portion 40a1 of the first air direction surface 40a.

As shown in fig. 19, during the heating operation, the first wind direction plate 40 is disposed so as to extend substantially vertically. The blown air is mainly guided downward by the concave portion 40a2 of the first air direction surface 40a.

Even in the fourth embodiment in which only the first louver 40 is provided, the direction of the blown air can be controlled well as in the first, second, and third embodiments by providing the convex portion 40a1 and the concave portion 40a2 in the first louver 40a.

As in the fourth embodiment, in the case where only one louver is provided, the number of power sources of the louver can be reduced. On the other hand, from the viewpoint of enabling better control of the direction of the blown air, it is preferable to provide a plurality of wind direction plates as in the first, second, and third embodiments.

The above-described embodiments are examples of preferred embodiments for carrying out the present invention, and the present invention is not limited to any of the above-described embodiments.

For example, the wind direction surface may include at least one of a plurality of convex and concave surfaces. For example, the wind direction surface may have one inflection point or may have a plurality of inflection points.

For example, the wind direction surface may include a plane portion in addition to the convex and concave portions. In this case, the flat portion may be provided between the convex portion and the concave portion.

The convex surface portion and the concave surface portion may be formed of curved surfaces or may be formed of a plurality of flat surfaces.

In the above embodiment, the 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 separately provided has been described. However, the present invention is not limited to this configuration. For example, a power source that supplies power to the first driving unit and a power source that supplies power to the second driving unit may be integrally provided. That is, power may be supplied from one power source to both the first driving unit and the second driving unit. In this way, by supplying power to the first driving unit and the second driving unit 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 degree of freedom in controlling the first louver and the second louver, it is preferable to provide power sources for the first driving unit and the second driving unit, respectively.

In the above embodiment, an example of two driving mechanisms including the first driving mechanism 60a and the second driving mechanism of the driving mechanism 60 is described. However, the present invention is not limited to this configuration. 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.

Claims (8)

1. An indoor unit of an air conditioner is characterized by comprising:

an indoor unit main body forming an air outlet;

a first wind direction plate having a first wind direction surface capable of controlling the direction of the blown-out wind blown out from the air outlet;

the first wind direction surface includes a convex surface portion protruding toward a side of the blown-out wind and a concave surface portion recessed toward a side opposite to the blown-out wind,

the convex portion is located at a position closer to the windward side than the concave portion, a radius of curvature of the convex portion is larger than that of the concave portion, and a length of the convex portion is shorter than that of the concave portion.

2. The indoor unit of an air conditioner according to claim 1, wherein the first louver is located on an upper side of the blown air.

3. The indoor unit of an air conditioner according to claim 2, comprising a second louver positioned below the blown air.

4. The indoor unit of an air conditioner according to claim 3, wherein the second wind direction plate has a second wind direction surface that can control the direction of the blown-out wind blown out from the air outlet;

the second wind direction surface includes a convex surface portion protruding toward the side of the blown-out wind and a concave surface portion recessed toward the side opposite to the blown-out wind.

5. The indoor unit of an air conditioner according to claim 4, comprising a driving mechanism having a first driving unit that rotates the first louver, a second driving unit that rotates the second louver, and a housing that houses the first driving unit and the second driving unit.

6. The indoor unit of an air conditioner according to any one of claims 1 to 5, wherein the first louver is rotatable about a rotation axis located between an upwind side end portion and a downwind side end portion of the first louver.

7. The indoor unit of an air conditioner according to claim 6, wherein the indoor unit main body has a guide wall, and the inside of the guide wall forms the air outlet and a supply passage that supplies air to the air outlet, respectively;

the first louver may be disposed such that the windward end portion is located outside the guide wall.

8. An air conditioner comprising the indoor unit according to any one of claims 1 to 7.