WO2021054180A1 - Air-conditioning indoor unit and air conditioner - Google Patents

Abstract

An air-conditioning indoor unit (1) is provided with a control device (100). In the case of performing an operation in a first airflow control mode in which a downstream gap is set wider than an upstream gap for the flow of blowing air between a first horizontal vane (41) and a second horizontal vane (51) to cause a portion of the blowing air to flow along a lower airfoil surface of the first horizontal vane (41) and cause another portion of the blowing air to flow along an upper airfoil surface of the second horizontal vane (51), the control device (100) performs an operation in a second airflow control mode in which a clearance angle between the first horizontal vane (41) and the second horizontal vane (51) is set narrower than a predetermined clearance angle between the first horizontal vane (41) and the second horizontal vane (51) in the first airflow control mode to blow out the blowing air, and then transitions to the operation in the first airflow control mode following the operation in the second airflow control mode.

Description

Air conditioning indoor unit and air conditioner

This disclosure relates to an air conditioner indoor unit and an air conditioner equipped with this air conditioner indoor unit.

Conventionally, the air conditioner indoor unit includes a casing provided with an air outlet, a first horizontal blade attached to the front edge of the air outlet, and a second horizontal blade attached to the trailing edge of the air outlet. (See, for example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2017-125678)). The first and second horizontal blades adjust the vertical wind direction of the blown air flowing from the outlet of the casing into the indoor space.

JP-A-2017-125678

In the above-mentioned conventional air-conditioning indoor unit, even if an attempt is made to supply blown air over a wide range by controlling the first and second horizontal blades, it is not possible to make the air flow follow each blade surface of the first and second horizontal blades. Therefore, the conventional air-conditioning indoor unit has a problem that the blown air cannot be supplied in a wide range.

An object of the present disclosure is to provide an air-conditioning indoor unit capable of stably supplying blown air to a wide range.

The air-conditioning indoor unit of one aspect of the present disclosure is
A casing with an outlet through which air from the blower fan is blown out,
The first horizontal blade that controls the vertical wind direction of the blown air from the outlet, and
The first drive unit that drives the first horizontal blade and
The second horizontal blade, which is arranged behind the first horizontal blade and controls the vertical wind direction of the blown air,
The second drive unit that drives the second horizontal blade and
It is provided with the blower fan and a control device for controlling the first drive unit and the second drive unit.
The above control device
A part of the blown air is placed on the lower wing surface of the first horizontal blade by widening the distance between the first horizontal blade and the second horizontal blade on the downstream side of the upstream side of the flow of the blown air. When operating in the first airflow control mode in which the other part of the blown air flows along the upper wing surface of the second horizontal blade while flowing along the same
The blown air is blown out by making the distance between the first horizontal blade and the second horizontal blade narrower than the predetermined distance between the first horizontal blade and the second horizontal blade in the first airflow control mode. After the operation of the second airflow control mode is performed, the operation of the second airflow control mode is followed by the operation of the first airflow control mode.

According to the above configuration, when the operation in the first airflow control mode is performed, the first horizontal blade and the second horizontal blade are more than a predetermined separation angle between the first horizontal blade and the second horizontal blade in the first airflow control mode. After the operation of the second airflow control mode in which the blown air is blown out by narrowing the separation angle with the above is performed, the operation of the second airflow control mode is followed by the operation of the first airflow control mode. As a result, the mode shifts from the second airflow control mode to the first airflow control mode while maintaining the Coanda effect on the lower blade surface of the first horizontal blade and the upper blade surface of the second horizontal blade. As a result, after the transition to the first airflow control mode, a part of the blown air can flow along the lower wing surface of the first horizontal blade, and the other part of the blown air can flow along the upper wing of the second horizontal blade. It can flow along the surface. Therefore, it is possible to realize a stable supply of blown air over a wide range.

In one aspect of the air conditioning indoor unit,
In the operation of the second airflow control mode, the rotation speed of the blower fan is made higher than the rotation speed of the first airflow control mode.

According to the above aspect, in the operation of the second airflow control mode, the rotation speed of the blower fan is made higher than the rotation speed in the first airflow control mode, so that the lower blade surface of the first horizontal blade and the second The Coanda effect on the upper wing surface of the horizontal blade can be enhanced.

In one aspect of the air conditioning indoor unit,
In the operation of the second airflow control mode performed before the operation of the first airflow control mode, the first horizontal blade and the second horizontal blade are driven by driving either the first horizontal blade or the second horizontal blade. Narrow the separation angle from the horizontal blade.

According to the above aspect, by driving either the first horizontal blade or the second horizontal blade, the separation angle between the first horizontal blade and the second horizontal blade is narrowed, so that the first horizontal blade and the second horizontal blade are separated from each other. The drive control of the first and second horizontal blades for narrowing the separation angle becomes easier than when both the blades and the blades are driven.

In one aspect of the air conditioning indoor unit,
In the operation of the first airflow control mode, the one of the first horizontal blade and the second horizontal blade having a larger angle with respect to the wind direction of the blown air is driven in the second airflow control mode to form the first horizontal blade. The separation angle from the second horizontal blade is narrowed.

According to the above aspect, in the operation of the first airflow control mode, the one of the first horizontal blade and the second horizontal blade having a larger angle with respect to the wind direction of the blown air is driven in the second airflow control mode to drive the first horizontal blade. Since the separation angle between the blade and the second horizontal blade is narrowed, it becomes easy to obtain an air flow along the larger one.

In one aspect of the air conditioning indoor unit,
The rotation of the first horizontal blade and / or the second horizontal blade in the operation of the second airflow control mode is the above-mentioned when shifting from the operation of the second airflow control mode to the operation of the first airflow control mode. Faster than the rotation of the first horizontal blade and / or the second horizontal blade.

According to the above aspect, the rotation of the first horizontal blade and / or the second horizontal blade becomes relatively slow when shifting from the operation of the second airflow control mode to the operation of the first airflow control mode. Since it is also fast, it is possible to suppress the separation of the airflow in the first horizontal blade and / or the second horizontal blade.

The air-conditioning indoor unit of one aspect of the present disclosure is
The air-conditioning indoor unit of any one of the above-mentioned plurality of air-conditioning indoor units and
It is provided with an air conditioner outdoor unit connected to the air conditioner indoor unit via a refrigerant pipe.

According to the above configuration, by providing the above air conditioning indoor unit, it is possible to realize a stable supply of blown air over a wide range.

It is a refrigerant circuit diagram of the air conditioner of 1st Embodiment of this disclosure. It is a schematic cross-sectional view of the indoor unit in the stopped state of 1st Embodiment of this disclosure. It is a block diagram of the inside of the said indoor unit. It is a control block diagram of the said air conditioner. It is a schematic cross-sectional view of the indoor unit in the 1st oblique airflow control mode. It is a schematic cross-sectional view of the indoor unit in the ceiling airflow control mode. It is a schematic cross-sectional view of the indoor unit in the vertical airflow control mode. It is a schematic sectional view of the indoor unit in the 2nd oblique airflow control mode. It is a perspective view of the 1st horizontal flap of 1st Embodiment of this disclosure. It is a top view of the 1st horizontal flap. It is a bottom view of the 1st horizontal flap. FIG. 10 is a cross-sectional view taken along the line XII-XII of FIG. FIG. 10 is a cross-sectional view taken along the line XIII-XIII in FIG. It is a perspective view of the 2nd horizontal flap of 1st Embodiment of this disclosure. It is a top view of the 2nd horizontal flap. It is a bottom view of the 2nd horizontal flap. FIG. 3 is a cross-sectional view taken along the line XVII-XVII of FIG. FIG. 3 is a cross-sectional view taken along the line XVIII-XVIII of FIG. It is a simulation result figure of the blown air of the indoor unit of the said 1st Embodiment. It is another simulation result figure of the blown air of the indoor unit of the said 1st Embodiment. It is a simulation result figure of the blown air of the indoor unit of a comparative example. It is a simulation result figure of the blown air of the indoor unit of the said comparative example. It is an image diagram of the blown air of the indoor unit of the first embodiment. It is a figure for demonstrating the wind speed of the blown air of the indoor unit of the said 1st Embodiment. It is a schematic sectional view of the indoor unit in the pre-diagonal airflow control mode. It is a flowchart for demonstrating the transition from the operation of the pre-diagonal airflow control mode to the operation of the first oblique airflow control mode. It is a schematic cross-sectional view of the indoor unit in another pre-diagonal airflow control mode. It is a schematic cross-sectional view of the indoor unit in another pre-diagonal airflow control mode. It is a control block diagram of the air conditioner of the 2nd Embodiment of this disclosure.

Hereinafter, the air conditioner indoor unit and the air conditioner of the present disclosure will be described in detail by the illustrated embodiment. In addition, the same reference numerals are given to common parts in each figure, and duplicate description is omitted.

[First Embodiment]
FIG. 1 shows a refrigerant circuit RC included in the air conditioner of the first embodiment of the present disclosure. This air conditioner is a pair type air conditioner in which the indoor unit 1 and the outdoor unit 2 are one-to-one. The indoor unit 1 is an example of an air-conditioning indoor unit. The outdoor unit 2 is an example of an air conditioner outdoor unit. Further, the connecting pipes L1 and L2 are examples of refrigerant pipes.

The air conditioner includes a compressor 11, a four-way switching valve 12 in which the discharge side of the compressor 11 is connected to one end, and an outdoor heat exchanger 13 in which one end is connected to the other end of the four-way switching valve 12. An electric expansion valve 14 having one end connected to the other end of the outdoor heat exchanger 13, and an indoor heat exchanger 15 having one end connected to the other end of the electric expansion valve 14 via a closing valve 21 and a connecting pipe L1. An accumulator 16 having one end connected to the other end of the indoor heat exchanger 15 via a connecting pipe L2, a closing valve 22, and a four-way switching valve 12 and the other end connected to the suction side of the compressor 11 is provided. There is. Here, the compressor 11, the four-way switching valve 12, the outdoor heat exchanger 13, the electric expansion valve 14, the indoor heat exchanger 15, the accumulator 16 and the like constitute the refrigerant circuit RC of the air conditioner. Further, the indoor heat exchanger 15, the indoor fan 10, and the like constitute the indoor unit 1. On the other hand, the compressor 11, the four-way switching valve 12, the outdoor heat exchanger 13, the electric expansion valve 14, the accumulator 16, the outdoor fan 20, and the like constitute the outdoor unit 2. The indoor fan 10 is an example of a blower fan. The electric expansion valve 14 is an example of a pressure reducing mechanism.

The indoor unit 1 includes an indoor heat exchanger temperature sensor T4 that detects the temperature of the indoor heat exchanger 15, an indoor temperature sensor T5 that detects the indoor temperature, and an indoor space R (shown in FIGS. 2, 5 to 8). It is provided with a floor surface temperature sensor T6 that detects the temperature of the floor surface facing the surface. Further, in the indoor unit 1, an indoor fan 10 that circulates indoor air via an indoor heat exchanger 15 is installed. For example, a thermistor or the like is used as the indoor heat exchanger temperature sensor T4 and the indoor temperature sensor T5. Further, for example, an infrared temperature sensor or the like is used as the floor surface temperature sensor T6. Further, the indoor space R is an example of an air-conditioned space.

The outdoor unit 2 includes an outdoor heat exchanger temperature sensor T1 that detects the temperature of the outdoor heat exchanger 13, an outside air temperature sensor T2 that detects the outside air temperature, and an evaporation temperature sensor T3 that detects the evaporation temperature of the electric expansion valve 14. It has. Further, an outdoor fan 20 for supplying outside air to the outdoor heat exchanger 13 is installed in the outdoor unit 2. For example, a thermistor or the like is used as the outdoor heat exchanger temperature sensor T1, the outside air temperature sensor T2, and the evaporation temperature sensor T3.

The above air conditioner is equipped with a remote controller (hereinafter referred to as "remote controller") (hereinafter referred to as "remote controller") (not shown). By operating this remote controller, it is possible to start or stop one of the operations such as cooling operation, dehumidifying operation, and heating operation, and to switch to the other operation. Further, by operating the remote controller, it is possible to change the set temperature of the indoor temperature and adjust the air volume of the air blown out by the indoor unit 1.

When the cooling operation or the dehumidifying operation is selected by the remote controller and the four-way switching valve 12 is switched to the state of the solid line in FIG. 1, the refrigerant from the compressor 11 indicates the refrigerant circuit RC as shown by the solid line arrow. , The four-way switching valve 12, the outdoor heat exchanger 13, the electric expansion valve 14, the indoor heat exchanger 15, the four-way switching valve 12, and the accumulator 16 flow in this order. On the other hand, when the heating operation is selected and the four-way switching valve 12 is switched to the state of the broken line in FIG. 1, the refrigerant from the compressor 11 is a four-way switching valve as shown by the broken line arrow in the refrigerant circuit RC. 12, the indoor heat exchanger 15, the electric expansion valve 14, the outdoor heat exchanger 13, the four-way switching valve 12, and the accumulator 16 flow in this order.

FIG. 2 schematically shows a vertical cross section of the indoor unit 1 in the stopped operation state. The indoor unit 1 is a wall-mounted type.

The indoor unit 1 includes a casing 30 including a casing main body 31 and a front panel 32. The casing 30 is attached to the wall surface W facing the indoor space R, and houses the indoor fan 10, the indoor heat exchanger 15, the drain pan 33, and the like. The indoor space R is an example of an air-conditioned space.

The casing main body 31 is composed of a plurality of members, and has a front surface portion 31a, an upper surface portion 31b, a rear surface portion 31c, and a lower surface portion 31d. A front panel 32 is attached to the front surface portion 31a so as to be openable and closable. Further, a suction port (not shown) is provided from the front surface portion 31a to the upper surface portion 31b.

The front panel 32 constitutes the front portion 31a of the indoor unit 1, and has, for example, a flat shape without a suction port. Further, the upper end portion of the front panel 32 is rotatably supported by the upper surface portion 31b of the casing main body 31 so that it can operate in a hinged manner.

The indoor fan 10 and the indoor heat exchanger 15 are attached to the casing main body 31. The indoor heat exchanger 15 exchanges heat with the indoor air sucked into the casing 30 through the suction port. Further, the side view shape of the indoor heat exchanger 15 is an inverted V shape in which both ends face downward and the bent portion is located on the upper side. The indoor fan 10 is located below the bent portion of the indoor heat exchanger 15. The indoor fan 10 is, for example, a cross-flow fan, and sends the indoor air that has passed through the indoor heat exchanger 15 to the air outlet 34 of the lower surface portion 31d of the casing main body 31.

Further, the casing main body 31 is provided with the first and second partition walls 35 and 36. The space sandwiched between the first partition wall 35 and the second partition wall 36 serves as an outlet flow path 37 connecting the indoor fan 10 and the outlet 34.

The drain pan 33 is arranged under the front part of the indoor heat exchanger 15 and receives dew condensation water from the front part thereof. This condensed water is discharged to the outside of the room via a drain hose (not shown).

Further, the indoor unit 1 includes a first horizontal flap 41 and a second horizontal flap 51 arranged on the rear side (wall surface W side) of the first horizontal flap 41. The first horizontal flap 41 and the second horizontal flap 51 adjust the vertical wind direction of the blown air that flows through the blowout flow path 37 and is blown out from the outlet 34. The first horizontal flap 41 is an example of the first horizontal blade. The second horizontal flap 51 is an example of the second horizontal blade.

The first horizontal flap 41 has a first end portion 41a arranged on the upstream side with respect to the flow of the blown air and a second end portion 41b arranged on the downstream side with respect to the flow of the blown air during operation of the indoor unit 1. And have. The first horizontal flap 41 is rotatably attached to the lower surface portion 31d of the casing main body 31.

More specifically, the first horizontal flap 41 has a piece portion 41 g (shown in FIGS. 9 to 13) connected to the second end portion 41b. This piece 41g is attached to the mounting portion 38 of the casing main body 31, and the first horizontal flap 41 is rotatable around the mounting portion 38. When the operation of the indoor unit 1 is stopped, the first horizontal flap 41 takes a posture along the front side portion of the lower surface portion 31d of the casing main body 31. When the operation of the indoor unit 1 starts, the first horizontal flap 41 is rotated by the drive of the first horizontal flap motor 73 (shown in FIGS. 3 and 4), and the first horizontal flap 41 and the front portion of the lower surface portion 31d of the casing main body 31 The distance between the first horizontal flap 41 and the second end 41b is widened. At this time, the first horizontal flap 41 can take a plurality of inclined postures with respect to the horizontal plane. As the first horizontal flap motor 73, for example, a 4-phase winding stepping motor is used.

Like the first horizontal flap 41, the second horizontal flap 51 has a first end portion 51a arranged on the upstream side with respect to the flow of the blown air and a second end arranged on the downstream side with respect to the flow of the blown air. It has a part 51b. The second horizontal flap 51 has a first end portion 51a rotatably attached to a lower surface portion 31d of the casing main body 31.

More specifically, when the operation of the indoor unit 1 is stopped, the second horizontal flap 51 takes a posture of closing the air outlet 34. When the operation of the indoor unit 1 is started, the second horizontal flap motor 74 (shown in FIGS. 3 and 4) drives the second horizontal flap 51. As a result, the second horizontal flap 51 rotates about the first end portion 51a, so that the second end portion 51b is separated from the mounting portion 38 and the air outlet 34 is opened. At this time, the second horizontal flap 51 can take a plurality of inclined postures with respect to the horizontal plane. As the second horizontal flap motor 74, for example, a 4-phase winding stepping motor is used.

Further, the indoor unit 1 is provided with a plurality of vertical flaps 61 (shown in FIG. 3) for adjusting the wind direction of the blown air in the left-right direction. The plurality of vertical flaps 61 are arranged in the outlet flow path 37 at predetermined intervals along the longitudinal direction of the outlet 34 (the direction perpendicular to the paper surface of FIG. 2). The vertical flap 61 is an example of a vertical blade.

FIG. 3 schematically shows the internal configuration of the indoor unit 1.

The first and second horizontal flaps 41 and 51 are rotatably supported in the vertical direction by the first and second rotating shafts 71 and 72. The first and second horizontal flap motors 73 and 74 rotate and drive the first and second rotating shafts 71 and 72, so that the first and second horizontal flaps 41 and 51 rotate in the vertical direction. The first horizontal flap motor 73 is an example of the first drive unit. The second horizontal flap motor 74 is an example of the second drive unit.

The plurality of vertical flaps 61 are divided into a first vertical flap group G1 and a second vertical flap group G2. The vertical flap 61 constituting the first vertical flap group G1 is an example of a vertical blade on one side of a plurality of vertical blades. Further, the vertical flap 61 constituting the second vertical flap group G2 is an example of the vertical blades on the other side of the plurality of vertical blades.

The first vertical flap group G1 is composed of a plurality of vertical flaps 61 facing the opening region on the left side of the center in the left-right direction of the air outlet 34. The vertical flaps 61 belonging to the first vertical flap group G1 are connected to each other by the first connecting rod 81. Further, when the first vertical flap group motor 83 drives the first connecting rod 81 in the left-right direction, the plurality of vertical flaps 61 rotate in the left-right direction about their respective rotation axes (not shown). ..

The second vertical flap group G2 is composed of a plurality of vertical flaps 61 facing the opening region on the right side of the center in the left-right direction of the air outlet 34. Like the vertical flap 61 belonging to the first vertical flap group G1, the vertical flap 61 belonging to the second vertical flap group G2 is also connected to the second connecting rod 82 and can be rotated by the second vertical flap group motor 84. It has become.

FIG. 4 is a control block diagram of the air conditioner.

The above air conditioner is equipped with a control device 100 including a microcomputer and an input / output circuit. The control device 100 has an indoor control unit (not shown) provided on the indoor unit 1 side and an outdoor control unit (not shown) provided on the outdoor unit 2 side.

The control device 100 switches the compressor 11, four-way switching based on signals from the outdoor heat exchanger temperature sensor T1, the outside air temperature sensor T2, the evaporation temperature sensor T3, the indoor heat exchanger temperature sensor T4, the indoor temperature sensor T5, and the like. Controls a valve 12, an indoor fan motor 85, an outdoor fan motor 86, a display unit 50, a first horizontal flap motor 73, a second horizontal flap motor 74, a first vertical flap group motor 83, a second vertical flap group motor 84, and the like. .. The display unit 50 is provided in the indoor unit 1 and is at least an LED or the like that displays an operating state. The indoor fan motor 85 drives the indoor fan 10. Further, the outdoor fan motor 86 drives the outdoor fan 20.

The indoor unit 1 can operate in the first diagonal airflow control mode, the ceiling airflow control mode, the vertical airflow control mode, and the second diagonal airflow control mode (for example, cooling operation, heating operation, etc.). Based on the above signal or the like, one airflow control mode is automatically selected from the first diagonal airflow control mode, the ceiling airflow control mode, the vertical airflow control mode, and the second diagonal airflow control mode, which will be described later. It can be switched to another airflow control mode. Further, by operating the remote controller, it is possible to select one of the first diagonal airflow control mode, the ceiling airflow control mode, the vertical airflow control mode, and the second diagonal airflow control mode. There is. The first oblique airflow control mode is an example of the first airflow control mode.

<First diagonal airflow control mode>
FIG. 5 schematically shows a vertical cross section of the indoor unit 1 in which the transition to the first oblique airflow control mode has been completed.

In the first oblique airflow control mode, the distance between the first horizontal flap 41 and the second horizontal flap 51 is wider on the downstream side of the blown air than on the upstream side of the blown air flow, and the outlet 34 The blown air flowing from the airflow to the indoor space R flows diagonally downward on the front side (the side opposite to the wall surface W side).

More specifically, defining a virtual surface V1 that passes through the center of the first horizontal flap 41 in the thickness direction of the first end 41a and the center of the first horizontal flap 41 in the thickness direction of the second end 41b is defined. In the first oblique airflow control mode, the inclination angle θ1 of the virtual surface V1 with respect to the horizontal plane H is, for example, + 10 °. On the other hand, if the virtual surface V2 passing through the center of the first end portion 51a of the second horizontal flap 51 in the thickness direction and the center of the second end portion 41b in the thickness direction is defined, in the first oblique airflow control mode, The inclination angle θ2 of the virtual surface V2 with respect to the horizontal plane H is, for example, + 70 °. At this time, the separation angle between the first horizontal flap 41 and the second horizontal flap 51 is, for example, 60 °. When the inclination angles θ1 and θ2 are + angles, the front side of the virtual surfaces V1 and V2 is located below the rear side of the virtual surfaces V1 and V2. Further, the separation angle corresponds to an angle obtained by subtracting the inclination angle θ1 from the inclination angle θ2. Note that 60 ° is an example of a predetermined separation angle.

In other words, when the first horizontal flap 41 is rotated by 25 ° from the state when the operation of the indoor unit 1 is stopped, it becomes the posture in the first oblique airflow control mode. On the other hand, when the second horizontal flap 51 is rotated by 70 ° from the state when the operation of the indoor unit 1 is stopped, it takes the posture in the first oblique airflow control mode. Here, the angle obtained by subtracting the rotation angle of the first horizontal flap 41 from the rotation angle of the second horizontal flap 51 is the angle between the first horizontal flap 41 and the second horizontal flap 51 in the first oblique airflow control mode. It becomes the separation angle.

In the first airflow control mode, each vertical flap 61 of the first vertical flap group G1 has the downstream end of the blown air flow located on the left side of the casing 30 with respect to the upstream end of the blown air flow. Take an inclined posture to do so. Further, in the first airflow control mode, in each vertical flap 61 of the second vertical flap group G1, the downstream end of the blown air flow is on the right side of the casing 30 with respect to the upstream end of the blown air flow. Take an inclined posture so that it is located at.

More specifically, the distance between the vertical flap 61 of the first vertical flap group G1 and the vertical flap 61 of the second vertical flap group G2 is closer to the downstream side of the blown air flow than to the upstream side of the blown air flow. Become wider. In other words, each vertical flap 61 of the first vertical flap group G1 has an end located on the downstream side of the blown air flow so as to approach the left side surface of the casing main body 31 and the blown air flow. The end portion located on the upstream side rotates so as to be separated from the left side surface portion of the casing main body 31. On the other hand, each of the vertical flaps 61 of the second vertical flap group G2 is located so that the end located on the downstream side of the blown air flow approaches the right side surface of the casing main body 31 and on the upstream side of the blown air flow. The end portion is rotated so as to be separated from the right side surface portion of the casing main body 31.

<Ceiling airflow control mode>
FIG. 6 schematically shows a vertical cross section of the indoor unit 1 in which the transition to the ceiling airflow control mode has been completed.

In the ceiling airflow control mode, the blown air flowing from the blowout port 34 to the indoor space R flows in the horizontal direction.

More specifically, in the ceiling airflow control mode, the inclination angle θ1 of the virtual surface V1 with respect to the horizontal plane H is, for example, −5 °. On the other hand, in the ceiling airflow control mode, the inclination angle θ2 of the virtual surface V2 with respect to the horizontal plane H is, for example, + 15 °. At this time, the inclination angles θ1 and θ2 are smaller than those in the first oblique airflow control mode. Conversely, the inclination angles θ1 and θ2 in the first oblique airflow control mode are larger than the inclination angles θ1 and θ2 in the ceiling airflow control mode. When the inclination angle θ1 is − −, the front side of the virtual surface V1 is located above the rear side of the virtual surface V1.

In other words, when the first horizontal flap 41 is rotated by 10 ° from the state when the operation of the indoor unit 1 is stopped, it becomes the posture in the ceiling airflow control mode. On the other hand, when the second horizontal flap 51 is rotated by 15 ° from the state when the operation of the indoor unit 1 is stopped, it takes the posture in the ceiling airflow control mode.

<Vertical airflow control mode>
FIG. 7 schematically shows a vertical cross section of the indoor unit 1 in which the transition to the vertical airflow control mode has been completed.

In the vertical airflow control mode, the blown air flowing from the blowout port 34 to the indoor space R flows downward along the wall surface W.

More specifically, in the vertical airflow control mode, the inclination angle θ1 of the virtual surface V1 with respect to the horizontal plane H is, for example, + 105 °. On the other hand, in the vertical airflow control mode, the inclination angle θ2 of the virtual surface V2 with respect to the horizontal plane H is, for example, + 100 °.

In other words, when the first horizontal flap 41 is rotated by 125 ° from the state when the operation of the indoor unit 1 is stopped, it becomes the posture in the vertical airflow control mode. On the other hand, when the second horizontal flap 51 is rotated by 100 ° from the state when the operation of the indoor unit 1 is stopped, it takes the posture in the vertical airflow control mode.

<Second diagonal airflow control mode>
FIG. 8 schematically shows a vertical cross section of the indoor unit 1 in which the transition to the second oblique airflow control mode has been completed.

In the second oblique airflow control mode, the distance between the first horizontal flap 41 and the second horizontal flap 51 is wider on the downstream side of the blown air than on the upstream side of the blown air flow, and is from the outlet 34. The blown air flowing in the indoor space R flows diagonally downward on the front side. At this time, the vertical spread of the blown air is smaller than that in the first oblique airflow control mode.

More specifically, in the second oblique airflow control mode, the inclination angle θ1 of the virtual surface V1 with respect to the horizontal plane H is, for example, −5 °. On the other hand, in the vertical airflow control mode, the inclination angle θ2 of the virtual surface V2 with respect to the horizontal plane H is, for example, + 45 °. At this time, the separation angle between the first horizontal flap 41 and the second horizontal flap 51 is, for example, 50 °. The separation angle corresponds to the angle obtained by subtracting the inclination angle θ1 from the inclination angle θ2.

In other words, when the first horizontal flap 41 is rotated by 15 ° from the state when the operation of the indoor unit 1 is stopped, it becomes the posture in the second oblique airflow control mode. On the other hand, when the second horizontal flap 51 is rotated by 52.5 ° from the state when the operation of the indoor unit 1 is stopped, it takes the posture in the first oblique airflow control mode. Here, the angle obtained by subtracting the rotation angle of the first horizontal flap 41 from the rotation angle of the second horizontal flap 51 is the angle between the first horizontal flap 41 and the second horizontal flap 51 in the second oblique airflow control mode. It becomes the separation angle.

<Structure of the first horizontal flap 41>
FIG. 9 is an oblique view of the upper wing surface 41c of the first horizontal flap 41. FIG. 10 is a front view of the upper wing surface 41c of the first horizontal flap 41. FIG. 11 is a front view of the lower wing surface 41d of the first horizontal flap 41. FIG. 12 is a cross-sectional view taken from the line XII-XII of FIG. FIG. 13 is a cross-sectional view seen from line XIII-XIII of FIG. Since the cross-sectional view seen from the line XII'-XII' in FIG. 11 is the same cross-sectional view as in FIG. 12, the illustration is omitted.

As shown in FIGS. 9 to 13, the thickness of the first horizontal flap 41 increases as it approaches from the first end 41a side to the second end 41b side, except for a part on the first end 41a side. It has a shape that makes it thinner. The first horizontal flap 41 has an upper wing surface 41c facing the casing main body 31 when the indoor unit 1 is stopped, and a lower wing surface 41d facing the indoor space when the indoor unit 1 is stopped.

The upper wing surface 41c includes a curved surface 41e that is curved and recessed in the lateral direction of the first horizontal flap 41. In other words, when the first horizontal flap 41 is cut along the lateral direction, the line showing the cross section of the upper wing surface 41c includes a curved line that is convex toward the lower wing surface 41d. Here, the lateral direction of the first horizontal flap 41 corresponds to a direction orthogonal to the longitudinal direction of the first horizontal flap 41 and the thickness direction of the first horizontal flap 41.

The lower wing surface 41d includes a curved surface 41f that curves and swells in the lateral direction of the first horizontal flap 41. In other words, when the first horizontal flap 41 is cut along the lateral direction, the line showing the cross section of the lower wing surface 41d includes a curved line that is convex on the side opposite to the upper wing surface 41c. ..

Further, the radius of curvature of the curved surface 41e of the upper wing surface 41c is set to be smaller than the radius of curvature of the curved surface 41f of the lower wing surface 41d of the first horizontal flap 41.

Further, the curved surfaces 41e and 41f are provided from one end of the first horizontal flap 41 in the longitudinal direction to the other end of the first horizontal flap 41 in the longitudinal direction.

<Structure of the second horizontal flap 51>
FIG. 14 is an oblique view of the upper wing surface 51c of the second horizontal flap 51. FIG. 15 is a front view of the upper wing surface 51c of the second horizontal flap 51. FIG. 16 is a front view of the lower wing surface 51d of the second horizontal flap 51. FIG. 17 is a cross-sectional view taken from the line XVII-XVII of FIG. FIG. 18 is a cross-sectional view taken from the line XVIII-XVIII of FIG. Since the cross-sectional view seen from the XV'-XV' line of FIG. 16 is the same cross-sectional view as that of FIG. 17, the illustration is omitted.

As shown in FIGS. 14 to 18, the second horizontal flap 51 has an upper wing surface 51c facing the blowout flow path 37 when the indoor unit 1 is stopped, and a lower surface facing the indoor space when the indoor unit 1 is stopped. It has a blade surface 51d. Further, in the second horizontal flap 51, the thickness of the central portion between the first end portion 51a and the second end portion 51b is thicker than the thickness of the first and second end portions 51a and 51b.

The upper wing surface 51c includes a curved surface 51e that curves and swells in the lateral direction of the second horizontal flap 51. In other words, when the second horizontal flap 51 is cut along the lateral direction, the line showing the cross section of the upper wing surface 51c includes a curved line that is convex on the side opposite to the lower wing surface 51d. .. Here, the lateral direction of the second horizontal flap 51 corresponds to a direction orthogonal to the longitudinal direction of the second horizontal flap 51 and the thickness direction of the second horizontal flap 51.

Further, the upper wing surface 51c is provided with a recess 51h located on the second end portion 51b side. When the operation of the indoor unit 1 is stopped, a part of the mounting portion 38 enters the recess 51h so that the second horizontal flap 51 does not interfere with the mounting portion 38.

The lower wing surface 51d includes a first curved surface 51f that is curved and recessed in the lateral direction of the second horizontal flap 51, and a second curved surface 51g that is curved and swells in the lateral direction of the second horizontal flap 51. I'm out. In other words, when the second horizontal flap 51 is cut along the lateral direction, the line showing the cross section of the lower wing surface 51d is a curved line that is convex toward the upper wing surface 51c, and the upper wing surface. Includes a curved line that is convex on the opposite side of 51c.

The first curved surface 51f is provided on the second end portion 51b side of the lower wing surface 51d, and overlaps the curved surface 51e in the thickness direction of the second horizontal flap 51.

The second curved surface 51g is provided on the first end portion 51a side of the lower wing surface 51d and is connected to the first curved surface 51f.

Further, the radius of curvature of the curved surface 51e of the upper wing surface 51c (for example, 396 mm or more) is set to be smaller than the radius of curvature of the first curved surface 51f of the lower wing surface 51d (for example, 1800 mm or more). In other words, the radius of curvature of the first curved surface 51f of the lower wing surface 51d of the second horizontal flap 51 is 4 to 5 times the radius of curvature of the curved surface 51e of the upper wing surface 51c of the second horizontal flap 51. It is set within the double range.

Further, the shape of the cross section along the lateral direction is the same except for both ends in the longitudinal direction of the second horizontal flap 51. Conversely, both ends of the second horizontal flap 51 in the longitudinal direction exhibit a cross-sectional shape different from that of the other parts of the second horizontal flap 51.

More specifically, the upper wing surfaces 51c at both ends of the second horizontal flap 51 in the longitudinal direction do not include the curved surface 51e. Further, the lower wing surfaces 51d at both ends of the second horizontal flap 51 in the longitudinal direction do not include the first and second curved surfaces 51f and 51g. In FIG. 14, the region where the curved surface 51e is formed is shown by a dotted line.

According to the air conditioner having the above configuration, when the operation in the first air flow control mode (for example, heating operation) is performed, the distance between the first horizontal flap 41 and the second horizontal flap 51 is on the upstream side of the flow of blown air. The downstream side of the flow of the blown air is wider than that, and the blown air flows diagonally downward on the side opposite to the wall surface W side. At this time, a part of the blown air flows along the lower wing surface 41d of the first horizontal flap 41. Since the lower wing surface 41d of the first horizontal flap 41 includes the curved surface 41f which is a convex surface, the Coanda effect on the lower wing surface 41d of the first horizontal flap 41 is enhanced. As a result, a part of the blown air is strongly attracted to the lower wing surface 41d of the first horizontal flap 41 and flows along the lower wing surface 41d of the first horizontal flap 41. On the other hand, when the upper wing surface 51c of the second horizontal flap 51 includes the curved surface 51e which is a convex surface, the Coanda effect on the upper wing surface 51c of the second horizontal flap 51 is enhanced. As a result, the other part of the blown air is strongly attracted to the upper wing surface 51c of the second horizontal flap 51.

In this way, a part of the blown air is strongly attracted to the lower wing surface 41d of the first horizontal flap 41, while another part of the blown air is strongly attracted to the lower wing surface 51d of the second horizontal flap 51. , It is possible to suppress the air flow from separating from the first and second horizontal flaps 41 and 51.

When the operation in the first airflow control mode is performed, the distance between the first horizontal flap 41 and the second horizontal flap 51 on the downstream side is larger than the distance between the first horizontal flap 41 and the second horizontal flap 51 on the upstream side. Since it spreads and the blown air flows diagonally downward on the front side, the blown air can be applied to a wide range of the floor surface facing the indoor space R, for example.

The distance between the first horizontal flap 41 and the second horizontal flap 51 on the downstream side of the flow of blown air is much wider than the distance between the first horizontal flap 41 and the second horizontal flap 51 on the upstream side of the flow of blown air. In this state, it is possible to prevent the airflow from separating from the first and second horizontal flaps 41 and 51, so that the blown air can be greatly expanded in the vertical direction.

Further, a part of the air from the outlet flow path 37 passes between the front edge portion of the outlet 34 and the first end portion 41a of the first horizontal flap 41, and passes between the casing main body 31 and the first horizontal flap 41. It flows between the upper wing surface 41c. At this time, since the upper wing surface 41c of the first horizontal flap 41 includes the curved surface 41e which is a concave surface, the Coanda effect on the upper wing surface 41c of the first horizontal flap 41 is enhanced. As a result, a part of the air is attracted to the upper wing surface 41c of the first horizontal flap 41 and flows along the upper wing surface 41c of the first horizontal flap 41. Therefore, for example, when the air from the blowout channel 37 is cold air, the upper wing surface 41c of the first horizontal flap 41 is covered with cold air to suppress dew exposure on the upper wing surface 41c of the first horizontal flap 41. Can be done.

Further, another part of the air from the outlet flow path 37 passes between the trailing edge portion of the outlet 34 and the first end portion 51a of the second horizontal flap 51, and passes between the wall surface W and the second horizontal flap 51. It flows between the lower wing surface 51d of 51. At this time, since the lower wing surface 51d of the second horizontal flap 51 includes the curved surface 51e which is a concave surface, the Coanda effect on the lower wing surface 51d of the second horizontal flap 51 is enhanced. As a result, the other part of the air is attracted to the lower wing surface 51d of the second horizontal flap 51 and flows along the lower wing surface 51d of the second horizontal flap 51. Therefore, for example, when the air from the blowout channel 37 is cold air, the lower wing surface 41d of the second horizontal flap 51 is covered with cold air to suppress dew exposure on the lower wing surface 51d of the second horizontal flap 51. Can be done.

Further, in the first oblique airflow control mode, the separation angle between the first horizontal flap 41 and the second horizontal flap 51 is set to, for example, 60 °, so that the blown air can be reliably expanded in the vertical direction.

Further, since the inclination angles θ1 and θ2 of the virtual surfaces V1 and V2 with respect to the horizontal plane H are larger in the first oblique airflow control mode and the ceiling airflow control mode, the blown air is surely flowed diagonally downward on the front side. be able to.

Further, in the first oblique airflow control mode, each vertical flap 61 of the first vertical flap group G1 rotates so that the downstream end of the blown air flow approaches the left side, while the second vertical flap Each vertical flap 61 of group G2 rotates so that the downstream end of the blown air flow approaches the right side. As a result, the substantially shape of the air flow path formed by the plurality of vertical flaps 61 of the first and second vertical flap groups G1 and G2 becomes a divergent shape from the upstream side to the downstream side of the blown air flow. .. As a result, the blown air can be expanded in the left-right direction.

Further, since the air conditioner is provided with the indoor unit 1 to prevent the airflow from separating from the first and second horizontal flaps 41 and 51, the blown air is spread in the vertical direction to cause uneven air conditioning. Can be reduced.

FIG. 19 shows the result of simulating the vertical spread of the blown air of the indoor unit 1 in the first oblique airflow control mode.

The blown air of the indoor unit 1 spreads in the vertical direction and hits from the upper body to the lower body of the user. Therefore, when the indoor unit 1 performs the heating operation, as shown in FIG. 20, it is possible to increase the region having the highest temperature (the darkest colored region in FIG. 20) on the surface of the user on the indoor unit 1 side. it can.

FIG. 21 shows the result of simulating the vertical spread of the blown air of the indoor unit 1001 of the comparative example.

The indoor unit 1001 of the comparative example is different from the indoor unit 1 only in that it is provided with the conventional first and second horizontal flaps. Further, the inclination angles of the conventional first and second horizontal flaps with respect to the horizontal plane are set in the same manner as in the simulation of FIG. Further, the lower wing surface and the upper wing surface of the conventional first and second horizontal flaps do not include curved surfaces and are flat surfaces.

The blown air of such an indoor unit 1001 does not spread in the vertical direction and hits only the lower body of the user. Therefore, when the indoor unit 1001 performs the heating operation, as shown in FIG. 22, the region having the highest temperature (the darkest colored region in FIG. 22) on the surface of the user's indoor unit 1001 side does not become large.

FIG. 23 is an image diagram of the spread of the blown air of the indoor unit 1 in the vertical and horizontal directions.

At a location 1 m in front of the indoor unit 1, the blown air passes through an area of, for example, 1.4 m in length × 1.2 m in width. At this time, when a person sits on a chair placed at the above-mentioned place, it is possible to reduce the unevenness of the wind speed of the blown air that hits each part of the person, as shown by the solid line in FIG. Moreover, the wind speed of the blown air that hits each part of the person can be set to 1 m / s or less. On the other hand, in the operation of the indoor unit 1001 of the comparative example, as shown by the dotted line in FIG. 24, the unevenness of the wind speed of the blown air that hits each part of the person is large. Further, even if the wind speed of the blown air below the knee of a person can be around 1 m / s, the wind speed of the blown air hitting the chest of a person exceeds 2 m / s.

In this way, the indoor unit 1 can send a gentle wind to each part of the user substantially evenly as compared with the indoor unit 1001 of the comparative example.

FIG. 25 schematically shows a vertical cross section of the indoor unit 1 in which the transition to the pre-diagonal airflow control mode has been completed. The pre-diagonal airflow control mode is an example of the second airflow control mode.

After the operation of the pre-diagonal airflow control mode is performed, the operation of the first oblique airflow control mode is performed.

More specifically, the first horizontal flap 41 and the second horizontal flap 51 are located at a predetermined separation angle (for example, 60 °) between the first horizontal flap 41 and the second horizontal flap 51 in the first oblique airflow control mode. The pre-diagonal airflow control mode operation (for example, heating operation, cooling operation, etc.) is performed in which the separation angle is narrowed and the blown air is blown from the blowout port 34 to the indoor space R. After the operation of the pre-diagonal airflow control mode, the transition to the first oblique airflow control mode is performed following this operation.

When the transition to the operation of the pre-diagonal airflow control mode is completed, the separation angle between the first horizontal flap 41 and the second horizontal flap 51 becomes, for example, 30 °.

Further, in the operation of the pre-diagonal airflow control mode, the rotation speed of the indoor fan 10 is higher than that in the first oblique airflow control mode. For example, when the rotation speed of the indoor fan 10 in the first oblique airflow control mode corresponds to the intermediate airflow (air volume larger than the weak airflow and smaller than the strong airflow), the indoor fan 10 in the pre-diagonal airflow control mode The number of revolutions of is set to correspond to the amount of strong air.

Further, in the period from the start of the operation of the pre-diagonal airflow control mode to the completion of the transition to the operation of the first oblique airflow control mode, the operation of narrowing the separation angle between the first horizontal flap 41 and the second horizontal flap 51. After the completion of the above, the rotation speed of the blower fan is lowered to the rotation speed at which the operation of the first oblique airflow control mode is performed.

Further, when the first and second horizontal flaps 41 and 51 are in the posture shown in FIG. 25, both the first and second horizontal flaps 41 and 51 are rotated.

Further, the first and second horizontal flaps 41 and 51 in the operation of the pre-diagonal airflow control mode are the first and second horizontal flaps when shifting from the operation of the pre-diagonal airflow control mode to the operation of the first oblique airflow control mode. It rotates at a higher speed than the flaps 41 and 51.

The alternate long and short dash line in FIG. 25 shows the posture of the second horizontal flap 51 when the transition to the first oblique airflow control mode is completed.

<Transition to the first oblique airflow control mode>
Hereinafter, the transition from the operation of the pre-diagonal airflow control mode to the operation of the first oblique airflow control mode will be described with reference to the flowchart of FIG. 26. The transition is controlled by the control device 100.

For example, when the indoor unit 1 is in the stopped state of FIG. 2 and the user operates the remote controller to select the heating operation of the first oblique airflow control mode, the process for the above transition is started, and in step S1. , Start the heating operation in the pre-diagonal airflow control mode.

More specifically, when the heating operation in the pre-diagonal airflow control mode is started, the compressor 11, the indoor fan 10, etc. are driven so that warm blown air is blown out from the outlet 34 to the indoor space R.

Next, in step S2, the rotation speed of the indoor fan 10 is set to a high rotation speed. This high rotation speed is higher than the set rotation speed of the indoor fan 10 during the heating operation in the first oblique airflow control mode.

Next, in step S3, the first horizontal flap 41 is rotated by 25 ° counterclockwise from the stopped state of the indoor unit 1, while the second horizontal flap 51 is counterclockwise from the stopped state of the indoor unit 1. Rotate 55 ° around. As a result, the separation angle between the first horizontal flap 41 and the second horizontal flap 51 is made narrower than in the first oblique airflow control mode. In short, the first and second horizontal flaps 41 and 51 are changed from the posture of FIG. 5 to the posture of FIG. 25.

Further, when the first and second horizontal flaps 41 and 51 are rotated, the rotation speeds of the first and second horizontal flaps 41 and 51 are changed from the heating operation in the pre-diagonal airflow control mode to the first oblique airflow control mode. It is faster than the rotation speed of the first and second horizontal flaps 41 and 51 when shifting to the operation of.

Next, in step S4, it is determined whether or not a predetermined time (for example, 1 second) has elapsed since the first and second horizontal flaps 41 and 51 were in the posture shown in FIG. This step S4 is repeated until it is determined that a predetermined time has elapsed since the first and second horizontal flaps 41 and 51 were in the posture shown in FIG.

Next, in step S5, the rotation speed of the indoor fan 10 is reduced to the set rotation speed.

Next, in step S6, the heating operation in the first oblique airflow control mode is started.

Finally, in step S7, the second horizontal flap 51 is rotated by 15 ° counterclockwise from the posture shown in FIG. 25 while maintaining the posture of the first horizontal flap 41. As a result, the first and second horizontal flaps 41 and 51 are in the posture shown in FIG. 25.

In this way, when the heating operation in the first oblique airflow control mode is performed, the first horizontal flap 41 is larger than the predetermined separation angle between the first horizontal flap 41 and the second horizontal flap 51 in the first oblique airflow control mode. After performing the heating operation in the pre-diagonal airflow control mode in which the separation angle between the and the second horizontal flap 51 is narrowed to blow out the blown air, the heating operation in the pre-diagonal airflow control mode is followed by the first oblique airflow control mode. Shift to heating operation. As a result, the pre-oblique airflow control mode shifts to the first oblique airflow control mode while maintaining the Coanda effect on the lower wing surface 41d of the first horizontal flap 41 and the upper wing surface 51c of the second horizontal flap 51. As a result, after the transition to the first oblique airflow control mode, a part of the blown air can flow along the lower blade surface 41d of the first horizontal flap 41, and the other part of the blown air can flow in the second horizontal. It can flow along the upper wing surface 51c of the flap 51. Therefore, the difference in wind speed becomes small in each part of the blown air flowing between the lower wing surface 41d of the first horizontal flap 41 and the upper wing surface 51c of the second horizontal flap 51. Therefore, when the blown air is blown out toward, for example, a wide range, a stable supply of the blown air to a wide range can be realized.

In short, by shifting to the heating operation of the first diagonal airflow control mode following the heating operation of the pre-diagonal airflow control mode, a stable Coanda wind can be formed in the first diagonal airflow control mode.

If the heating operation in the pre-diagonal airflow control mode is followed by the heating operation in the first diagonal airflow control mode, the supply of blown air to a wide range can be reproduced in the same manner.

Further, in the heating operation in the pre-diagonal airflow control mode, the rotation speed of the indoor fan 10 is higher than the rotation speed in the first oblique airflow control mode, so that the lower wing surfaces 41d and the second of the first horizontal flap 41 The Coanda effect with the upper wing surface 51c of the horizontal flap 51 can be enhanced.

Further, the rotation speed of the second horizontal flap 51 for changing from the posture of FIG. 2 to the posture of FIG. 25 is higher than the rotation speed of the second horizontal flap 51 for changing from the posture of FIG. 25 to the posture of FIG. Since it is fast, it is possible to suppress the peeling of the airflow in the second horizontal flap 51 when changing from the posture of FIG. 25 to the posture of FIG. It is possible to realize the supply of blown air to.

In the first embodiment, the operation of the indoor unit 1 is stopped, the heating operation is performed in the pre-diagonal airflow control mode, and then the heating operation is performed in the first oblique airflow control mode. The heating operation of the above may be shifted to the heating operation of the first oblique airflow control mode through the heating operation of the pre-diagonal airflow control mode.

In short, in one embodiment of the present disclosure, the transition to the first oblique airflow control mode is performed immediately after the start of operation of the indoor unit 1, but after passing through the other airflow control modes, the first oblique airflow is performed. The control mode may be entered.

In the first embodiment, the first oblique airflow control mode is selected by the user using, for example, a remote controller, but even if the user does not select, for example, the control device detects the floor surface temperature sensor T6. The heating operation in the first oblique airflow control mode may be selected based on a signal or the like. In this case, the heating operation in the first oblique airflow control mode is automatically selected, so that the convenience of the indoor unit 1 is improved.

In the first embodiment, the operation in the pre-diagonal airflow control mode is a heating operation, but may be a cooling operation, a blowing operation, or the like.

In the first embodiment described above, the operation in the first oblique airflow control mode is a heating operation, but may be a cooling operation, a blowing operation, or the like. In this case, the operation of the first oblique airflow control mode may be the same as the operation of the immediately preceding pre-diagonal airflow control mode.

In the first embodiment, the pre-diagonal airflow control mode is operated immediately before the heating operation in the first oblique airflow control mode, but the pre-diagonal airflow control mode is operated immediately before the heating operation in the first oblique airflow control mode. The operation in the pre-diagonal airflow control mode similar to the oblique airflow control mode may be performed.

In the first embodiment, the first and second horizontal flaps 41 and 51 when the transition to the operation of the pre-diagonal airflow control mode is completed are in the posture shown in FIG. 25, but the first oblique airflow control mode If it is narrower than the separation angle at the time of, the posture other than FIG. 25 may be used.

For example, the first and second horizontal flaps 41 and 51 when the transition to the operation of the pre-diagonal airflow control mode is completed may be in the posture shown in FIG. 27. In this case, the rotation speeds of the first and second horizontal flaps 41, 51 for changing from the other posture to the posture shown in FIG. It may be faster than the rotation speed of the second horizontal flaps 41 and 51.

The alternate long and short dash line in FIG. 27 shows the postures of the first and second horizontal flaps 41 and 51 when the transition to the first oblique airflow control mode is completed.

For example, the first and second horizontal flaps 41 and 51 when the transition to the operation of the pre-diagonal airflow control mode is completed may be in the posture shown in FIG. 28. In this case, the rotation speed of the first horizontal flap 41 for changing from the other posture to the posture shown in FIG. 28 is the rotation speed of the first horizontal flap 41 for changing from the posture shown in FIG. 28 to the posture shown in FIG. It may be faster than the speed.

The alternate long and short dash line in FIG. 28 shows the posture of the first horizontal flap 41 when the transition to the first oblique airflow control mode is completed.

In the first embodiment, the first horizontal flap 41 and the second horizontal flap 51 are separated from each other in the period from the start of the operation of the pre-diagonal airflow control mode to the completion of the transition to the operation of the first oblique airflow control mode. When the operation of narrowing the angle is completed, the rotation speed of the indoor fan 10 has been lowered, but the rotation speed of the indoor fan 10 may be maintained as it is without being lowered.

In the first embodiment, when the first and second horizontal flaps 41 and 51 are in the posture shown in FIG. 25, both the first and second horizontal flaps 41 and 51 are rotated, but the first and first horizontal flaps 41 and 51 are rotated. 2 If the posture immediately before the horizontal flaps 41 and 51 satisfies a predetermined condition, only one of the first and second horizontal flaps 41 and 51 may be rotated. In this case, the rotation control of the first and second horizontal flaps 41 and 51 for the posture shown in FIG. 25 becomes simple.

Here, when the above predetermined conditions are satisfied, for example, one of the first and second horizontal flaps 41 and 51 may be in the posture shown in FIG. 25.

Further, when only one of the first and second horizontal flaps 41 and 51 is rotated to reduce the separation angle of the first and second horizontal flaps 41 and 51, one of them is in the first oblique airflow control mode. Of the first horizontal flap 41 and the second horizontal flap 51, the one having a larger angle with respect to the wind direction of the blown air may be used. In this case, it becomes easy to obtain an air flow along the larger one.

Here, the wind direction is a direction parallel to the tangent line of the lower end of the inner peripheral surface of the second partition wall 36 (a direction forming 45 ° with respect to the horizontal plane) and a direction diagonally downward from the indoor unit 1.

In the first embodiment, the air conditioner is a pair type including one indoor unit 1 and one outdoor unit 2, but a plurality of indoor units 1 and one outdoor unit 2 are used. It may be a multi-type provided.

In the first embodiment, for example, during a cooling operation, a dehumidifying operation, or a heating operation, the control device 100 has a first oblique airflow control mode and a ceiling airflow control mode based on a signal from the room temperature sensor T5 or the like. , One of the vertical airflow control mode and the second oblique airflow control mode may be appropriately selected, or switching between these modes may be performed.

In the first embodiment, for example, during a cooling operation, a dehumidifying operation, or a heating operation, the user can perform a first oblique airflow control mode, a ceiling airflow control mode, a vertical airflow control mode, and a second oblique airflow control mode. A desired mode may be selected from among them, for example, with a remote controller.

In the first embodiment, the separation angle between the first horizontal flap 41 and the second horizontal flap 51 in the first oblique airflow control mode is 60 °, but it may be other than 60 °. In this case, the separation angle is set to be within the range of, for example, 53 ° to 60 °.

In the first embodiment, with respect to the vertical flap 61 arranged at the left end of the plurality of vertical flaps 61 and the vertical flap 61 arranged at the right end of the plurality of vertical flaps 61 in the first oblique airflow control mode. , The distance on the downstream side was wider than the distance on the upstream side, but the distance between them may be substantially the same. In short, in the first oblique airflow control mode, control for spreading the blown air in the left-right direction may be performed, or control for spreading the blown air in the left-right direction may not be performed.

[Second Embodiment]
FIG. 29 is a control block diagram of the air conditioner according to the second embodiment of the present disclosure.

The indoor unit of the air conditioner is provided with a motion sensor 91 that detects the distance to a person in the indoor space R. The control device 200 controls the first and second horizontal flap motors 73 and 74 based on the detection result of the motion sensor 91.

More specifically, in the vertical airflow control mode, when the distance detected by the motion sensor 91 becomes a predetermined distance (for example, 1 m) or less, the control device 200 switches the vertical airflow control mode to the first airflow control mode. The above distance is, for example, the distance between the indoor unit and a person in the front-rear direction.

The air conditioner having the above configuration has the same effect as that of the first embodiment, and the vertical airflow control mode is switched to the first airflow control mode when the distance detected by the motion sensor 91 is equal to or less than a predetermined distance. Therefore, the blown air of the indoor unit can be directly applied to the person in the indoor space R at the right time.

Although the specific embodiments of the present disclosure have been described, the present disclosure is not limited to the first and second embodiments and modifications thereof, and various modifications are made within the scope of the present disclosure. Can be done. For example, a part of the contents described in the first and second embodiments may be deleted or replaced as one embodiment of the present disclosure. Alternatively, a combination of the modified example of the first embodiment and the second embodiment may be used as one embodiment of the present disclosure.

1 Indoor unit 2 Outdoor unit 10 Indoor fan 11 Compressor 12 Four-way switching valve 13 Outdoor heat exchanger 14 Electric expansion valve 15 Indoor heat exchanger 16 Accumulator 20 Outdoor fan 30 Casing 34 Outlet 41 1st horizontal flap 41c, 51c Blade surface 41d, 51d Lower blade surface 41e, 41f, 51e Curved surface 51 Second horizontal flap 51f First curved surface 51g Second curved surface 61 Vertical flap 73 First horizontal flap motor 74 Second horizontal flap motor 83 First vertical flap Group Motor 84 2nd Vertical Flap Group Motor 91 Human Sensor 100,200 Control Device G1 1st Vertical Flap Group G2 2nd Vertical Flap Group L1, L2 Connecting Piping RC Refrigerator Circuit T1 Outdoor Heat Exchanger Temperature Sensor T2 Outside Air Temperature Sensor T3 Evaporation temperature sensor T4 Indoor heat exchanger temperature sensor T5 Indoor temperature sensor T6 Floor surface temperature sensor θ1, θ2 Tilt angle

Claims (6)

1. A casing (30) in which an air outlet (34) for blowing air from the blower fan (10) is formed, and a casing (30).
   The first horizontal blade (41) that controls the vertical wind direction of the blown air from the outlet (34), and
   The first drive unit (73) that drives the first horizontal blade (41) and
   The second horizontal blade (51), which is arranged behind the first horizontal blade (41) and controls the vertical wind direction of the blown air,
   The second drive unit (74) that drives the second horizontal blade (51) and
   A control device (100, 200) for controlling the blower fan (10), the first drive unit (73), and the second drive unit (74) is provided.
   The control device (100, 200) is
   A part of the blown air is divided into the first horizontal by widening the distance between the first horizontal blade (41) and the second horizontal blade (51) on the downstream side of the upstream side of the flow of the blown air. When operating in the first airflow control mode in which the other part of the blown air is flowed along the upper blade surface of the second horizontal blade (51) while flowing along the lower blade surface of the blade (41).
   The first horizontal blade (41) and the second horizontal blade (51) are located at a predetermined separation angle between the first horizontal blade (41) and the second horizontal blade (51) in the first airflow control mode. The feature is that after the operation of the second airflow control mode in which the blown air is blown out is performed by narrowing the separation angle, the operation of the second airflow control mode is followed by the operation of the first airflow control mode. Airflow indoor unit (1).
2. In the air-conditioning indoor unit (1) according to claim 1,
   An air-conditioning indoor unit (1) characterized in that, in the operation of the second airflow control mode, the rotation speed of the blower fan (10) is higher than the rotation speed of the first airflow control mode.
3. In the air-conditioning indoor unit (1) according to claim 1 or 2.
   In the operation of the second airflow control mode performed before the operation of the first airflow control mode, the first horizontal blade (41) or the second horizontal blade (51) is driven by driving the first horizontal blade. An air-conditioning indoor unit (1) characterized in that the separation angle between the horizontal blade (41) and the second horizontal blade (51) is narrowed.
4. In the air-conditioning indoor unit (1) according to any one of claims 1 to 3,
   In the operation of the first air flow control mode, the one of the first horizontal blade (41) and the second horizontal blade (51) having a larger angle with respect to the wind direction of the blown air is driven in the second air flow control mode. An air-conditioning indoor unit (1) characterized in that the separation angle between the first horizontal blade (41) and the second horizontal blade (51) is narrowed.
5. In the air-conditioning indoor unit (1) according to any one of claims 1 to 3,
   The rotation of the first horizontal blade (41) and / or the second horizontal blade (51) in the operation of the second airflow control mode is from the operation of the second airflow control mode to the operation of the first airflow control mode. The air-conditioning indoor unit (1), which is faster than the rotation of the first horizontal blade (41) and / or the second horizontal blade (51) at the time of transition to.
6. The air-conditioning indoor unit (1) according to any one of claims 1 to 5 and the air-conditioning indoor unit (1).
   An air conditioner including an air conditioner outdoor unit (2) connected to the air conditioner indoor unit (1) via refrigerant pipes (L1, L2).

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