CN114364921A - Air conditioner indoor unit and air conditioner - Google Patents

Abstract

An air conditioning indoor unit (1) is provided with a control device (100). When the control device (100) is to perform the operation in the first airflow control mode, after performing the operation in the second airflow control mode, following operation in the second airflow control mode and transitioning to operation in the first airflow control mode, wherein in the first airflow control mode, the interval between the first horizontal blade (41) and the second horizontal blade (51) on the downstream side of the flow of the blown air is made wider than the interval on the upstream side, and a part of the blown air is caused to flow along the lower blade surface of the first horizontal blade (41), and another part of the blown air is caused to flow along the upper blade surface of the second horizontal blade (51), in the second airflow control mode, the separation angle between the first horizontal blade (41) and the second horizontal blade (51) is made narrower than the predetermined separation angle between the first horizontal blade (41) and the second horizontal blade (51) in the first airflow control mode, and blown air is blown out.

Description

Air conditioner indoor unit and air conditioner

Technical Field

The present disclosure relates to an air conditioning indoor unit and an air conditioner provided with the air conditioning indoor unit.

Background

Conventionally, as an air conditioning indoor unit, there is an air conditioning indoor unit including: the air conditioner includes a casing provided with an air outlet, a first horizontal blade attached to a front edge portion of the air outlet, and a second horizontal blade attached to a rear edge portion of the air outlet (see, for example, patent document 1 (japanese patent application laid-open No. 2017-125678)). The first and second horizontal blades adjust the vertical direction of the blown air flowing from the outlet port of the casing into the indoor space.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-125678

Disclosure of Invention

Problems to be solved by the invention

In the conventional air conditioning indoor unit described above, even if the first horizontal blade and the second horizontal blade are controlled to supply the blown air over a wide range, the airflow cannot be made to follow the respective blade surfaces of the first horizontal blade and the second horizontal blade. Therefore, the conventional air conditioning indoor unit described above has a problem in that the blown air cannot be supplied over a wide area.

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

Means for solving the problems

An air conditioning indoor unit according to an aspect of the present disclosure includes:

a housing having an air outlet through which air from the air supply fan is blown;

a first horizontal blade that controls a vertical direction of air blown out from the air outlet;

a first driving unit for driving the first horizontal blade;

a second horizontal blade which is disposed behind the first horizontal blade and controls the vertical direction of the blown air;

a second driving unit for driving the second horizontal blade; and

a control device for controlling the blower fan, the first drive part and the second drive part,

when the control device is to perform the operation in the first airflow control mode, after performing the operation in the second airflow control mode, subsequently, the operation in the second airflow control mode is switched to the operation in the first airflow control mode, wherein in the first airflow control mode, the distance between the first horizontal blade and the second horizontal blade on the downstream side of the flow of the blown air is made larger than the distance between the first horizontal blade and the second horizontal blade on the upstream side, and a part of the blown air is caused to flow along the lower blade surface of the first horizontal blade, and another part of the blown air is caused to flow along the upper blade surface of the second horizontal blade, in the second airflow control mode, the blown air is blown out by narrowing a separation angle between the first horizontal blade and the second horizontal blade, compared with a predetermined separation angle between the first horizontal blade and the second horizontal blade in the first airflow control mode.

According to the above configuration, when the operation in the first airflow control mode is to be performed, the operation in the second airflow control mode in which the blown air is blown out with the separation angle between the first horizontal blades and the second horizontal blades being narrower than the predetermined separation angle between the first horizontal blades and the second horizontal blades in the first airflow control mode is performed, and then the operation in the second airflow control mode is performed, and the transition is made to the operation in the first airflow control mode. Thereby, a transition is made from the second flow control mode to the first flow control mode while maintaining the coanda effect at the lower airfoil surface of the first horizontal vane and the upper airfoil surface of the second horizontal vane. As a result, after the transition to the first airflow control mode, a part of the blown air is caused to flow along the lower surface of the first horizontal blade, and another part of the blown air is caused to flow along the upper surface of the second horizontal blade. Therefore, stable supply of the blown air over a wide range can be achieved.

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

According to the above aspect, since the rotation speed of the blower fan is set higher than that in the first airflow control mode during operation in the second airflow control mode, the coanda effect at the lower blade surface of the first horizontal blade and the upper blade surface of the second horizontal blade can be improved.

In an air conditioning indoor unit according to one aspect, in the operation in the second airflow control mode performed before the operation in the first airflow control mode, the separation angle between the first horizontal blade and the second horizontal blade is narrowed by driving one of the first horizontal blade and the second horizontal blade.

According to the above aspect, since the separation angle between the first horizontal blade and the second horizontal blade is narrowed by driving one of the first horizontal blade and the second horizontal blade, the driving control of the first horizontal blade and the second horizontal blade for narrowing the separation angle is simplified as compared with the case where both the first horizontal blade and the second horizontal blade are driven.

In an air conditioning indoor unit according to one aspect, in the second airflow control mode, one of the first horizontal blades and the second horizontal blades that has a larger angle with respect to the wind direction of the blown air is driven in the operation in the first airflow control mode, and the separation angle between the first horizontal blade and the second horizontal blade is narrowed.

According to the above aspect, in the second airflow control mode, the first horizontal blade and the second horizontal blade are driven such that the angle with respect to the wind direction of the blown air is larger in the operation in the first airflow control mode, and the separation angle between the first horizontal blade and the second horizontal blade is narrowed.

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 in the second airflow control mode is faster than the rotation of the first horizontal blade and/or the second horizontal blade when the operation in the second airflow control mode is shifted to the operation in the first airflow control mode.

According to the above aspect, the rotation of the first horizontal blade and/or the second horizontal blade is relatively slow at the time of transition from the operation in the second airflow control mode to the operation in the first airflow control mode, and therefore, the rotation is faster than the rotation, so that the separation of the airflow at the first horizontal blade and/or the second horizontal blade can be suppressed.

An air conditioning indoor unit according to an aspect of the present disclosure includes:

any one of the plurality of air-conditioning indoor units; and

and an air conditioning outdoor unit connected to the air conditioning indoor unit via a refrigerant pipe.

According to the above configuration, by providing the air conditioning indoor unit, it is possible to stably supply air to a wide range.

Drawings

Fig. 1 is a refrigerant circuit diagram of an air conditioner according to a first embodiment of the present disclosure.

Fig. 2 is a schematic cross-sectional view of the indoor unit in an operation-stopped state according to the first embodiment of the present disclosure.

Fig. 3 is a structural view of the inside of the indoor unit.

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

Fig. 5 is a schematic cross-sectional view of the indoor unit in the first oblique airflow control mode.

Fig. 6 is a schematic cross-sectional view of the indoor unit in the ceiling airflow control mode.

Fig. 7 is a schematic cross-sectional view of the indoor unit in the vertical airflow control mode.

Fig. 8 is a schematic cross-sectional view of the indoor unit in the second oblique airflow control mode.

Fig. 9 is a perspective view of a first horizontal baffle of the first embodiment of the present disclosure.

Fig. 10 is a plan view of the first horizontal baffle.

Fig. 11 is a bottom view of the first horizontal baffle.

Fig. 12 is a sectional view as viewed in the direction of the arrow along line XII-XII of fig. 10.

Fig. 13 is a sectional view taken in the direction of arrows along line XIII-XIII of fig. 10.

Fig. 14 is a perspective view of a second horizontal baffle of the first embodiment of the present disclosure.

Fig. 15 is a plan view of the second horizontal baffle.

Fig. 16 is a bottom view of the second horizontal baffle.

Fig. 17 is a sectional view as viewed in the direction of the arrow XVII-XVII line in fig. 13.

Fig. 18 is a sectional view as viewed in the direction of the arrow on line XVIII-XVIII of fig. 13.

Fig. 19 is a graph showing the simulation result of the blown air in the indoor unit according to the first embodiment.

Fig. 20 is a diagram showing another simulation result of the outlet air of the indoor unit according to the first embodiment.

Fig. 21 is a graph showing the simulation results of the outlet air of the indoor unit of the comparative example.

Fig. 22 is a graph showing the simulation results of the blown air of the indoor unit of the comparative example.

Fig. 23 is an image of the outlet air of the indoor unit according to the first embodiment.

Fig. 24 is a diagram for explaining the wind speed of the blown air in the indoor unit according to the first embodiment.

Fig. 25 is a schematic cross-sectional view of the indoor unit in the pre-tilt airflow control mode.

Fig. 26 is a flowchart for explaining transition from the operation in the pretilt airflow control mode to the operation in the first tilt airflow control mode.

Fig. 27 is a schematic cross-sectional view of the indoor unit in another pre-tilt airflow control mode.

Fig. 28 is a schematic cross-sectional view of the indoor unit in another pre-tilt airflow control mode.

Fig. 29 is a control block diagram of an air conditioner according to a second embodiment of the present disclosure.

Detailed Description

Hereinafter, an air conditioning indoor unit and an air conditioner according to the present disclosure will be described in detail with reference to the illustrated embodiments. In addition, the same reference numerals are given to the common portions in the drawings, and redundant description is omitted.

[ first embodiment ]

Fig. 1 shows a refrigerant circuit RC provided in an air conditioner according to a 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 paired one on one. The indoor unit 1 is an example of an air conditioning indoor unit. The outdoor unit 2 is an example of an air conditioning outdoor unit. The communication pipes L1 and L2 are examples of refrigerant pipes.

The air conditioner includes: a compressor 11; a four-way switching valve 12 having one end connected to the discharge side of the compressor 11; an outdoor heat exchanger 13 having one end 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; an indoor heat exchanger 15 having one end connected to the other end of the electric expansion valve 14 via a shutoff valve 21 and a communication pipe L1; and a gas-liquid separator 16 having one end connected to the other end of the indoor heat exchanger 15 via a communication pipe L2, the shutoff valve 22, and the four-way switching valve 12, and the other end connected to the suction side of the compressor 11. Here, the compressor 11, the four-way switching valve 12, the outdoor heat exchanger 13, the motor-operated expansion valve 14, the indoor heat exchanger 15, the gas-liquid separator 16, and the like constitute a refrigerant circuit RC of the air conditioner. 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 motor-operated expansion valve 14, the gas-liquid separator 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 motor-operated 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 an indoor temperature; and a floor surface temperature sensor T6 that detects the temperature of the floor surface facing the indoor space R (shown in fig. 2, 5 to 8). Further, an indoor fan 10 for circulating indoor air through the indoor heat exchanger 15 is provided in the indoor unit 1. In addition, for example, thermistors or the like are used as the indoor heat exchanger temperature sensor T4 and the indoor temperature sensor T5. As the floor temperature sensor T6, an infrared temperature sensor or the like is used, for example. The indoor space R is an example of an air-conditioning target space.

The outdoor unit 2 includes an outdoor heat exchanger temperature sensor T1 for detecting the temperature of the outdoor heat exchanger 13, an outdoor air temperature sensor T2 for detecting the temperature of the outdoor air, and an evaporation temperature sensor T3 for detecting the evaporation temperature of the motor-operated expansion valve 14. Further, an outdoor fan 20 for supplying outside air to the outdoor heat exchanger 13 is provided in the outdoor unit 2. Further, for example, thermistors or the like are used as the outdoor heat exchanger temperature sensor T1, the outside air temperature sensor T2, and the evaporation temperature sensor T3.

The air conditioner includes a remote controller (hereinafter, referred to as a "remote controller"), not shown. By operating the remote controller, 1 operation of the cooling operation, the dehumidifying operation, the heating operation, and the like can be started or stopped, or switched to another operation. Further, by operating the remote controller, it is also possible to change the set temperature of the indoor temperature or 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 solid line state in fig. 1, the refrigerant from the compressor 11 flows through the refrigerant circuit RC in the order of the four-way switching valve 12, the outdoor heat exchanger 13, the motor-operated expansion valve 14, the indoor heat exchanger 15, the four-way switching valve 12, and the gas-liquid separator 16 as indicated by solid arrows. On the other hand, when the heating operation is selected and the four-way switching valve 12 is switched to the state indicated by the broken line in fig. 1, the refrigerant from the compressor 11 flows through the refrigerant circuit RC in the order of the four-way switching valve 12, the indoor heat exchanger 15, the motor-operated expansion valve 14, the outdoor heat exchanger 13, the four-way switching valve 12, and the gas-liquid separator 16 as indicated by the broken line arrows.

Fig. 2 schematically shows a longitudinal section of the indoor unit 1 in an operation-stopped 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 a 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-conditioning target space.

The housing main body 31 is formed 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 31 d. A front panel 32 is openably and closably attached to the front portion 31 a. Further, a suction port (not shown) is provided from the front surface portion 31a to the upper surface portion 31 b.

The front panel 32 constitutes the front surface 31a of the indoor unit 1, and has, for example, a flat shape without a suction port. The upper end of the front panel 32 is rotatably supported by the upper surface 31b of the housing main body 31 and is capable of hinge-type operation.

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 indoor air sucked into the casing 30 through the suction port. The shape of the indoor heat exchanger 15 in a side view is an inverted V shape with both ends directed downward and a bent portion positioned above. 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 conveys the indoor air having 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 housing main body 31 is provided with a first partition wall 35 and a second partition wall 36. The space 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 disposed below the front portion of the indoor heat exchanger 15, and receives dew condensation water from the front portion. The dew condensation water is discharged to the outside of the room through a drain hose (not shown).

The indoor unit 1 further includes a first horizontal louver 41 and a second horizontal louver 51 disposed behind the first horizontal louver 41 (on the wall surface W side). The first horizontal flap 41 and the second horizontal flap 51 adjust the vertical direction of the blown air flowing through the blowing flow path 37 and blown out from the blow-out port 34. The first horizontal baffle 41 is an example of a first horizontal blade. The second horizontal baffle 51 is an example of a second horizontal blade.

The first horizontal baffle 41 has: a first end portion 41a disposed upstream with respect to the flow of the blown air during operation of the indoor unit 1; and a second end 41b disposed downstream of the flow of the blown air. The first horizontal flap 41 is rotatably attached to the lower surface portion 31d of the housing main body 31.

More specifically, the first horizontal baffle 41 has a sheet portion 41g (shown in fig. 9 to 13) connected to the second end portion 41 b. The piece 41g is attached to the attachment portion 38 of the housing main body 31, and the first horizontal flap 41 is rotatable about the attachment portion 38. When the operation of the indoor unit 1 is stopped, the first horizontal flap 41 takes a posture along the front portion of the lower surface 31d of the casing main body 31. When the operation of the indoor unit 1 is started, the first horizontal barrier 41 is rotated by the driving of the first horizontal barrier motor 73 (shown in fig. 3 and 4), and the interval between the front portion of the lower surface portion 31d of the casing main body 31 and the second end portion 41b of the first horizontal barrier 41 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 barrier motor 73, for example, a 4-phase winding stepping motor is used.

The second horizontal baffle 51 includes, similarly to the first horizontal baffle 41: a first end 51a disposed upstream with respect to the flow of the blown air; and a second end 51b disposed downstream of the flow of the blown air. The first end 51a of the second horizontal shutter 51 is rotatably attached to the lower surface 31d of the housing main body 31.

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

The indoor unit 1 further includes a plurality of vertical flaps 61 (shown in fig. 3) for adjusting the 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 baffle 61 is an example of a vertical blade.

Fig. 3 schematically shows the internal structure of the indoor unit 1.

The first and second horizontal flappers 41 and 51 are supported by the first and second rotation shafts 71 and 72 to be rotatable in the vertical direction. The first and second horizontal flappers 41 and 51 are rotated in the vertical direction by the first and second horizontal flappers motors 73 and 74 rotating the first and second rotating shafts 71 and 72. The first horizontal barrier motor 73 is an example of the first driving unit. The second horizontal barrier motor 74 is an example of the second driving unit.

The plurality of vertical baffles 61 are divided into a first vertical baffle group G1 and a second vertical baffle group G2. The vertical baffle 61 constituting the first vertical baffle group G1 is an example of one vertical blade among the plurality of vertical blades. The vertical baffle 61 constituting the second vertical baffle group G2 is an example of the other vertical blade among the plurality of vertical blades.

The first vertical baffle group G1 is configured by a plurality of vertical baffles 61 that face the opening regions of the blow-out port 34 on the left side of the center in the left-right direction. The vertical baffle plates 61 belonging to the first vertical baffle group G1 are connected to each other by first connecting rods 81. The first link 81 is driven by the first vertical shutter group motor 83 in the left-right direction, and the plurality of vertical shutters 61 are rotated in the left-right direction about the respective rotation shafts (not shown).

The second vertical baffle group G2 is configured by a plurality of vertical baffles 61 that face opening regions of the blow-out port 34 that are on the right side of the center in the left-right direction. The vertical baffle 61 belonging to the second vertical baffle group G2 is also connected to the second connecting rod 82 and can be rotated by the second vertical baffle group motor 84, similarly to the vertical baffle 61 belonging to the first vertical baffle group G1.

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

The air conditioner includes a control device 100 including a microcomputer, an input/output circuit, and the like. The control device 100 includes 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 controls the compressor 11, the four-way switching valve 12, the indoor fan motor 85, the outdoor fan motor 86, the display unit 50, the first horizontal barrier motor 73, the second horizontal barrier motor 74, the first vertical barrier group motor 83, the second vertical barrier group motor 84, and the like 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. The display unit 50 is an LED or the like provided in the indoor unit 1 and displays at least an operation state. In addition, the indoor fan motor 85 drives the indoor fan 10. In addition, the outdoor fan motor 86 drives the outdoor fan 20.

The indoor unit 1 is capable of performing operations (for example, cooling operation, heating operation, and the like) in a first oblique airflow control mode, a ceiling airflow control mode, a vertical airflow control mode, and a second oblique airflow control mode. Based on the signal or the like, 1 airflow control mode is automatically selected from a first inclined airflow control mode, a ceiling airflow control mode, a vertical airflow control mode, and a second inclined airflow control mode, which will be described later, or switched to another airflow control mode. In addition, by operating the remote controller, 1 mode of the first oblique airflow control mode, the ceiling airflow control mode, the vertical airflow control mode, and the second oblique airflow control mode can be selected. The first oblique airflow control mode is an example of the first airflow control mode.

< first oblique airflow control mode >

Fig. 5 schematically shows a longitudinal section of the indoor unit 1 in which the transition to the first oblique airflow control mode is 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 flow of the blown-out air than on the upstream side of the flow of the blown-out air, and the blown-out air flowing from the blow-out port 34 to the indoor space R flows obliquely downward toward the front side (the side opposite to the wall surface W side).

More specifically, if the virtual plane V1 passing through the center of the first end 41a of the first horizontal baffle 41 in the thickness direction and the center of the second end 41b of the first horizontal baffle 41 in the thickness direction is defined, the inclination angle θ 1 of the virtual plane V1 with respect to the horizontal plane H in the first oblique airflow control mode is, for example, +10 °. On the other hand, if the virtual plane V2 passing through the center in the thickness direction of the first end 51a and the center in the thickness direction of the second end 41b of the second horizontal baffle 51 is defined, the inclination angle θ 2 of the virtual plane V2 with respect to the horizontal plane H in the first inclined airflow control mode is, for example, +70 °. At this time, the separation angle of the first horizontal barrier 41 and the second horizontal barrier 51 is, for example, 60 °. When the inclination angles θ 1 and θ 2 are positive (+), the front sides of the virtual surfaces V1 and V2 are located lower than the rear sides of the virtual surfaces V1 and V2. The separation angle corresponds to an angle obtained by subtracting the inclination angle θ 1 from the inclination angle θ 2. In addition, 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, the first inclined airflow control mode is set to the posture. On the other hand, when the second horizontal louver 51 is rotated by 70 ° from the state when the operation of the indoor unit 1 is stopped, the second horizontal louver assumes the posture in the first oblique airflow control mode. Here, an angle obtained by subtracting the rotation angle of the first horizontal shutter 41 from the rotation angle of the second horizontal shutter 51 becomes a separation angle between the first horizontal shutter 41 and the second horizontal shutter 51 in the first oblique airflow control mode.

In the first airflow control mode, each vertical baffle 61 of the first vertical baffle group G1 takes the following posture: the downstream end of the flow of the blown air is inclined to the left of the casing 30 with respect to the upstream end of the flow of the blown air. In the first airflow control mode, each vertical baffle 61 of the second vertical baffle group G1 takes the following posture: the downstream end of the flow of the blown air is inclined to the right of the housing 30 with respect to the upstream end of the flow of the blown air.

To describe in more detail, the interval between the vertical baffle 61 of the first vertical baffle group G1 and the vertical baffle 61 of the second vertical baffle group G2 is wider on the downstream side of the flow of the blown air than on the upstream side of the flow of the blown air. In other words, each vertical baffle 61 of the first vertical baffle group G1 rotates such that the end located on the downstream side of the flow of the blown air is closer to the left side surface of the casing body 31 and the end located on the upstream side of the flow of the blown air is farther from the left side surface of the casing body 31. On the other hand, each vertical baffle 61 of the second vertical baffle group G2 rotates so that the end on the downstream side of the flow of the blown air is closer to the right side surface of the casing body 31 and the end on the upstream side of the flow of the blown air is farther from the right side surface of the casing body 31.

< ceiling airflow control mode >

Fig. 6 schematically shows a longitudinal section of the indoor unit 1 in which the transition to the ceiling airflow control mode is completed.

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

More specifically, in the ceiling airflow control mode, the inclination angle θ 1 of the virtual plane 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 θ 2 of the virtual plane V2 with respect to the horizontal plane H is, for example, +15 °. In this case, the inclination angles θ 1 and θ 2 are smaller than in the first inclination airflow control mode. Conversely, the tilt angles θ 1 and θ 2 in the first tilt airflow control mode are larger than the tilt angles θ 1 and θ 2 in the ceiling airflow control mode. When the inclination angle θ 1 is a negative (-) angle, the front side of the virtual plane V1 is located above the rear side of the virtual plane V1.

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

< vertical airflow control mode >

Fig. 7 schematically shows a longitudinal section of the indoor unit 1 in which the transition to the vertical airflow control mode is completed.

In the vertical airflow control mode, the blown air flowing from the blow-out port 34 into the indoor space R flows downward along the wall surface W.

More specifically, in the vertical airflow control mode, the inclination angle θ 1 of the virtual plane 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 θ 2 of the virtual plane V2 with respect to the horizontal plane H is, for example, +100 °.

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

< second oblique airflow control mode >

Fig. 8 schematically shows a longitudinal section of the indoor unit 1 in which the transition to the second oblique airflow control mode is completed.

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

More specifically, in the second oblique airflow control mode, the inclination angle θ 1 of the virtual plane 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 θ 2 of the virtual plane V2 with respect to the horizontal plane H is, for example, +45 °. At this time, the separation angle of the first horizontal barrier 41 and the second horizontal barrier 51 is, for example, 50 °. The separation angle corresponds to an angle obtained by subtracting the inclination angle θ 1 from the inclination angle θ 2.

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, the second inclined airflow control mode is set in the posture. On the other hand, when the second horizontal vane 51 is rotated by 52.5 ° from the state when the operation of the indoor unit 1 is stopped, the second horizontal vane assumes the posture in the first oblique airflow control mode. Here, an angle obtained by subtracting the rotation angle of the first horizontal shutter 41 from the rotation angle of the second horizontal shutter 51 is a separation angle between the first horizontal shutter 41 and the second horizontal shutter 51 in the second oblique airflow control mode.

< construction of first horizontal baffle plate 41 >

Fig. 9 is a view of the upper blade surface 41c of the first horizontal baffle plate 41 as viewed obliquely. Fig. 10 is a front view of the upper blade surface 41c of the first horizontal baffle plate 41. Fig. 11 is a front view of the lower blade surface 41d of the first horizontal baffle plate 41. Fig. 12 is a sectional view as viewed from the line XII-XII in fig. 11. Fig. 13 is a sectional view taken along line XIII-XIII in fig. 10. Since the sectional view taken along line XII '-XII' in fig. 11 is the same as that in fig. 12, the illustration thereof is omitted.

As shown in fig. 9 to 13, the first horizontal baffle 41 has the following shape: the thickness becomes thinner as approaching the second end portion 41b side from the first end portion 41a side, except for a portion on the first end portion 41a side. The first horizontal baffle 41 has an upper blade surface 41c facing the casing main body 31 when the operation of the indoor unit 1 is stopped, and a lower blade surface 41d facing the indoor space when the operation of the indoor unit 1 is stopped.

The upper wing surface 41c includes a curved surface 41e curved and recessed in the short side direction of the first horizontal baffle 41. In other words, when the first horizontal baffle 41 is cut along the short side direction, the line indicating the cross section of the upper airfoil surface 41c includes a curved line that protrudes toward the lower airfoil surface 41d side. Here, the short side direction of the first horizontal baffle plate 41 corresponds to a direction orthogonal to the long side direction of the first horizontal baffle plate 41 and the thickness direction of the first horizontal baffle plate 41.

The lower airfoil surface 41d includes a curved surface 41f curved to bulge in the short side direction of the first horizontal baffle 41. In other words, when the first horizontal baffle 41 is cut along the short side direction, the line indicating the cross section of the lower blade surface 41d includes a curved line that protrudes toward the side opposite to the upper blade surface 41 c.

The radius of curvature of the curved surface 41e of the upper blade surface 41c is set to be smaller than the radius of curvature of the curved surface 41f of the lower blade surface 41d of the first horizontal fence 41.

The curved surfaces 41e and 41f are provided from one end of the first horizontal baffle plate 41 in the longitudinal direction to the other end of the first horizontal baffle plate 41 in the longitudinal direction.

< Structure of second horizontal shutter 51 >

Fig. 14 is a view of the upper blade surface 51c of the second horizontal baffle 51 as viewed obliquely. Fig. 15 is a front view of the upper blade surface 51c of the second horizontal baffle 51. Fig. 16 is a front view of the lower blade surface 51d of the second horizontal baffle 51. Fig. 17 is a sectional view as viewed from the line XVII-XVII in fig. 16. Fig. 18 is a sectional view as viewed from line XVIII-XVIII of fig. 16. The cross-sectional view taken along the line XV '-XV' in fig. 16 is the same as that in fig. 17, and therefore, the illustration thereof is omitted.

As shown in fig. 14 to 18, the second horizontal baffle 51 has an upper blade surface 51c that faces the outlet flow path 37 when the operation of the indoor unit 1 is stopped, and a lower blade surface 51d that faces the indoor space when the operation of the indoor unit 1 is stopped. In the second horizontal barrier 51, the thickness of the central portion between the first end 51a and the second end 51b is greater than the thickness of the first end 51a and the second end 51 b.

The upper airfoil surface 51c includes a curved surface 51e curved to swell in the short side direction of the second horizontal baffle 51. In other words, when the second horizontal baffle 51 is cut along the short side direction, the line indicating the cross section of the upper blade surface 51c includes a curved line that protrudes toward the side opposite to the lower blade surface 51 d. Here, the short side direction of the second horizontal barrier 51 corresponds to a direction orthogonal to the long side direction of the second horizontal barrier 51 and the thickness direction of the second horizontal barrier 51.

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

The lower airfoil surface 51d includes a first curved surface 51f curved and concave in the short side direction of the second horizontal baffle 51 and a second curved surface 51g curved and convex in the short side direction of the second horizontal baffle 51. In other words, when the second horizontal baffle 51 is cut along the short side direction, the line indicating the cross section of the lower airfoil surface 51d includes a curved line that protrudes toward the upper airfoil surface 51c and a curved line that protrudes toward the side opposite to the upper airfoil surface 51 c.

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

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

The radius of curvature (e.g., 396mm or more) of the curved surface 51e of the upper blade surface 51c is set to be smaller than the radius of curvature (e.g., 1800mm or more) of the first curved surface 51f of the lower blade surface 51 d. In other words, the radius of curvature of the first curved surface 51f of the lower blade surface 51d of the second horizontal baffle 51 is set to be in the range of 4 to 5 times the radius of curvature of the curved surface 51e of the upper blade surface 51c of the second horizontal baffle 51.

The second horizontal baffle 51 is formed so that the cross-sectional shape along the short-side direction is the same except for both ends in the longitudinal direction. Conversely, both end portions of the second horizontal baffle 51 in the longitudinal direction have a cross-sectional shape different from the other portions of the second horizontal baffle 51.

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

According to the air conditioner configured as described above, when the operation in the first airflow control mode (for example, the heating operation) is performed, the interval between the first horizontal flap 41 and the second horizontal flap 51 is wider on the downstream side of the flow of the blown air than on the upstream side of the flow of the blown air, and the blown air flows obliquely downward on the opposite side to the wall surface W side. At this time, a part of the blown air flows along the lower blade surface 41d of the first horizontal baffle 41. Since the lower fin 41d of the first horizontal baffle 41 includes the curved surface 41f that becomes a convex surface, the coanda effect at the lower fin 41d of the first horizontal baffle 41 is improved. As a result, a part of the blown air is strongly drawn to the lower blade surface 41d of the first horizontal baffle 41 and flows along the lower blade surface 41d of the first horizontal baffle 41. On the other hand, since the upper wing surface 51c of the second horizontal baffle 51 includes the curved surface 51e which becomes a convex surface, the coanda effect at the upper wing surface 51c of the second horizontal baffle 51 is improved. As a result, the other part of the blown air is strongly pulled up to the upper blade surface 51c of the second horizontal baffle 51.

Thus, since a part of the blown air is strongly pulled to the lower blade surface 41d of the first horizontal flap 41 and another part of the blown air is strongly pulled to the lower blade surface 51d of the second horizontal flap 51, separation of the airflow from the first horizontal flap 41 and the second horizontal flap 51 can be suppressed.

When the operation in the first airflow control mode is performed, the distance between the first horizontal baffle 41 and the downstream side of the second horizontal baffle 51 is wider than the distance between the first horizontal baffle 41 and the upstream side of the second horizontal baffle 51, and the blown air flows obliquely downward toward the front side, so that the blown air can be blown over a wide area, for example, the floor surface facing the indoor space R.

In a state where the distance between the first horizontal baffle 41 and the second horizontal baffle 51 on the downstream side of the flow of the blown air is significantly larger than the distance between the first horizontal baffle 41 and the second horizontal baffle 51 on the upstream side of the flow of the blown air, the flow of the blown air can be suppressed from separating from the first horizontal baffle 41 and the second horizontal baffle 51, and therefore the blown air can be greatly expanded in the vertical direction.

Further, a part of the air from the outlet flow path 37 flows between the casing main body 31 and the upper surface 41c of the first horizontal flap 41 through between the front edge portion of the outlet port 34 and the first end portion 41a of the first horizontal flap 41. At this time, since the upper blade surface 41c of the first horizontal baffle 41 includes the curved surface 41e which becomes a concave surface, the coanda effect at the upper blade surface 41c of the first horizontal baffle 41 is improved. As a result, a part of the air is drawn to the upper blade surface 41c of the first horizontal baffle plate 41 and flows along the upper blade surface 41c of the first horizontal baffle plate 41. Therefore, for example, when the air from the outlet flow path 37 is cold air, the upper blade surface 41c of the first horizontal baffle plate 41 can be covered with the cold air, and condensation on the upper blade surface 41c of the first horizontal baffle plate 41 can be suppressed.

Further, another portion of the air from the outlet flow path 37 passes between the rear edge portion of the outlet 34 and the first end 51a of the second horizontal flap 51, and flows between the wall surface W and the lower blade surface 51d of the second horizontal flap 51. At this time, since the lower blade surface 51d of the second horizontal barrier 51 includes the curved surface 51e which becomes a concave surface, the coanda effect at the lower blade surface 51d of the second horizontal barrier 51 is improved. As a result, the other part of the air is drawn to the lower blade surface 51d of the second horizontal baffle 51 and flows along the lower blade surface 51d of the second horizontal baffle 51. Therefore, for example, when the air from the outlet flow path 37 is cold air, the lower blade surface 41d of the second horizontal baffle 51 can be covered with the cold air, and condensation on the lower blade surface 51d of the second horizontal baffle 51 can be suppressed.

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 °, and therefore the blown air can be reliably expanded in the vertical direction.

In the first oblique airflow control mode, the inclination angles θ 1 and θ 2 of the virtual surfaces V1 and V2 with respect to the horizontal plane H are larger than those in the ceiling airflow control mode, and therefore, the blown air can be reliably caused to flow obliquely downward toward the front side.

In the first oblique airflow control mode, the vertical flaps 61 of the first vertical flap group G1 pivot such that the downstream end of the flow of the blown air approaches the left side, and the vertical flaps 61 of the second vertical flap group G2 pivot such that the downstream end of the flow of the blown air approaches the right side. Thus, the substantial shape of the air flow path formed by the plurality of vertical baffles 61 of the first vertical baffle group G1 and the second vertical baffle group G2 is a shape gradually expanding from the upstream side to the downstream side of the flow of the blown air. As a result, the blown air can be expanded in the left-right direction.

Further, since the air conditioner includes the indoor unit 1, it is possible to suppress the airflow from being separated from the first horizontal louver 41 and the second horizontal louver 51, and thus, the blown air can be spread in the vertical direction, and uneven air conditioning can be reduced.

Fig. 19 shows the results of simulation of the vertical expansion of the outlet air of the indoor unit 1 in the first oblique airflow control mode.

The air blown out from the indoor unit 1 spreads in the vertical direction and blows 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, the area of the user on the indoor unit 1 side surface where the temperature is the highest (the area of the darkest color in fig. 20) can be increased.

Fig. 21 shows the results of a simulation of the vertical expansion of the outlet 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 includes the conventional first horizontal flap and second horizontal flap. The inclination angles of the first and second horizontal flappers with respect to the horizontal plane in the related art are set in the same manner as in the simulation of fig. 19. In addition, the lower airfoil surface and the upper airfoil surface of the conventional first horizontal baffle and the conventional second horizontal baffle do not include a curved surface, but are flat surfaces.

The air blown out from the indoor unit 1001 does not spread in the vertical direction and can be blown only to the lower body of the user. Therefore, when the indoor unit 1001 performs the heating operation, as shown in fig. 22, the area of the surface on the side of the user's indoor unit 1001 where the temperature is the highest (the area of the darkest color in fig. 22) is not large.

Fig. 23 is a vertically and horizontally expanded image of the outlet air of the indoor unit 1.

The blown air passes through a region of, for example, 1.4m in the vertical direction × 1.2m in the horizontal direction at a position 1m ahead of the indoor unit 1. In this case, when a person sits on the chair placed in the above-described place, as shown by the solid line in fig. 24, the variation in the wind speed of the blown air blown to each part of the person can be reduced. The speed of the blown air blown to each part of the human body can be set to 1m/s or less. On the other hand, in the operation of the indoor unit 1001 of the comparative example, as shown by the broken line in fig. 24, variation in the wind speed of the blown air blown to each part of the person becomes large. Even if the speed of the blown air blown below the knees of the person is about 1m/s, the speed of the blown air blown to the chest of the person exceeds 2 m/s.

In this way, the indoor unit 1 can substantially equally deliver soft air to each part of the user, 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-tilt airflow control mode is completed. In addition, the pre-tilt airflow control mode is an example of the second airflow control mode.

After the operation in the pre-tilt airflow control mode is performed, the operation in the first tilt airflow control mode is performed.

More specifically, the operation in the pretilt airflow control mode (for example, the heating operation, the cooling operation, and the like) is performed, and in the pretilt airflow control mode, the blown air is blown out from the air outlet 34 into the indoor space R with the separation angle between the first horizontal louver 41 and the second horizontal louver 51 being narrower than a predetermined separation angle (for example, 60 °) between the first horizontal louver 41 and the second horizontal louver 51 in the first oblique airflow control mode. After the operation in the pre-tilt airflow control mode, the operation is shifted to the first tilt airflow control mode.

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

In addition, in the operation in the pre-tilt airflow control mode, the rotation speed of the indoor fan 10 is higher than that in the first tilt 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 rate (airflow rate larger than the weak airflow rate and smaller than the strong airflow rate), the rotation speed of the indoor fan 10 in the pre-tilt airflow control mode is set to correspond to the strong airflow rate.

Further, during the period from the start of the operation in the pre-tilt airflow control mode to the completion of the transition to the operation in the first tilt airflow control mode, after the operation of narrowing the separation angle between the first horizontal baffle 41 and the second horizontal baffle 51 is completed, the rotation speed of the blower fan is reduced to the rotation speed at the time of the operation in the first tilt airflow control mode.

When the first and second horizontal flaps 41 and 51 are brought into the posture of fig. 25, both the first and second horizontal flaps 41 and 51 are rotated.

In addition, the first and second horizontal shutters 41 and 51 in the operation in the pre-tilt airflow control mode rotate at a higher speed than the first and second horizontal shutters 41 and 51 in the transition from the operation in the pre-tilt airflow control mode to the operation in the first tilt airflow control mode.

The two-dot chain line in fig. 25 indicates the posture of the second horizontal flap 51 when the transition to the first oblique airflow control mode is completed.

< transition to first oblique airflow control mode >

The transition from the operation in the pre-tilt airflow control mode to the operation in the first tilt airflow control mode will be described below with reference to the flowchart of fig. 26. The transition is controlled by the control device 100.

For example, when the user operates the remote controller to select the heating operation in the first oblique airflow control mode in the operation-stopped state of the indoor unit 1 shown in fig. 2, the above-described transition processing is started, and in step S1, the heating operation in the pre-tilt airflow control mode is started.

More specifically, when the heating operation in the pretilt airflow control mode is started, the compressor 11, the indoor fan 10, and the like operate because hot blown air is blown out from the air outlet 34 into the indoor space R.

Next, in step S2, the rotation speed of the indoor fan 10 is set to a high rotation speed. The 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 vane 41 is rotated 25 ° counterclockwise from the operation stop state of the indoor unit 1, and the second horizontal vane 51 is rotated 55 ° counterclockwise from the operation stop state of the indoor unit 1. Thus, the separation angle between the first horizontal baffle 41 and the second horizontal baffle 51 is made narrower than in the first oblique airflow control mode. In short, the first and second horizontal flaps 41 and 51 are set from the position of fig. 5 to the position of fig. 25.

When the first and second horizontal shutters 41 and 51 are rotated, the rotational speeds of the first and second horizontal shutters 41 and 51 are faster than the rotational speeds of the first and second horizontal shutters 41 and 51 when the operation shifts from the heating operation in the pre-tilt airflow control mode to the operation in the first tilt airflow control mode.

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 of fig. 5. This step S4 is repeated until it is determined that the first horizontal flap 41 and the second horizontal flap 51 have elapsed a predetermined time from the posture of fig. 5.

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 lean airflow control mode is started.

Finally, in step S7, the second horizontal flap 51 is rotated counterclockwise by 15 ° from the attitude of fig. 25 while maintaining the attitude of the first horizontal flap 41. Thereby, the first and second horizontal flaps 41 and 51 assume the postures shown in fig. 25.

In this way, when the heating operation in the first oblique air flow control mode is to be performed, the heating operation in the pre-tilt air flow control mode is performed, and then the heating operation in the pre-tilt air flow control mode is performed, and the air-heating operation is shifted to the heating operation in the first oblique air flow control mode, in which the blown air is blown out by narrowing the separation angle between the first horizontal louver 41 and the second horizontal louver 51 from the predetermined separation angle between the first horizontal louver 41 and the second horizontal louver 51 in the first oblique air flow control mode. Thereby, the pre-tilt airflow control mode is shifted to the first tilt airflow control mode while maintaining the coanda effect at the lower wing surface 41d of the first horizontal baffle 41 and the upper wing surface 51c of the second horizontal baffle 51. As a result, after the transition to the first oblique air flow control mode, a part of the blown air flows along the lower blade surface 41d of the first horizontal baffle plate 41, and another part of the blown air flows along the upper blade surface 51c of the second horizontal baffle plate 51. Therefore, the difference in wind speed is reduced in each portion of the blown air flowing between the lower blade surface 41d of the first horizontal baffle plate 41 and the upper blade surface 51c of the second horizontal baffle plate 51. Therefore, when the blown air is blown out over a wide range, for example, stable supply of the blown air over a wide range can be achieved.

In short, by switching the heating operation following the pre-tilt airflow control mode to the heating operation in the first tilt airflow control mode, it is possible to form a stable coanda wind in the first tilt airflow control mode.

Even if the heating operation in the pre-tilt airflow control mode is shifted to the heating operation in the first tilt airflow control mode, the supply of the blown air to a wide range can be reproduced in the same manner.

In the heating operation in the pre-tilt airflow control mode, the rotation speed of the indoor fan 10 is set higher than that in the first tilt airflow control mode, and therefore, the coanda effect between the lower blade surface 41d of the first horizontal baffle 41 and the upper blade surface 51c of the second horizontal baffle 51 can be improved.

Further, since the rotation speed of the second horizontal baffle 51 for changing the posture from the posture of fig. 2 to the posture of fig. 25 is faster than the rotation speed of the second horizontal baffle 51 for changing the posture from the posture of fig. 25 to the posture of fig. 5, the separation of the airflow at the second horizontal baffle 51 can be suppressed when the posture of fig. 25 is changed to the posture of fig. 5.

In addition, the air conditioning indoor unit described above includes the indoor unit 1, and thus can stably supply air to a wide range of areas.

In the first embodiment, the heating operation in the pre-tilt airflow control mode is switched from the operation stopped state of the indoor unit 1 to the heating operation in the first tilt airflow control mode, but the heating operation in the ceiling airflow control mode may be switched to the heating operation in the first tilt airflow control mode.

In short, in the embodiment of the present disclosure, the transition to the first oblique airflow control mode is performed immediately after the start of the operation of the indoor unit 1, but the transition to the first oblique airflow control mode may be performed after another airflow control mode has elapsed.

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 it, the control device may select the heating operation in the first oblique airflow control mode based on, for example, a detection signal of the floor temperature sensor T6. In this case, since the heating operation in the first oblique airflow control mode is automatically selected, the convenience of the indoor unit 1 is improved.

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

In the first embodiment, the operation in the first oblique airflow control mode is the heating operation, but may be a cooling operation, an air blowing operation, or the like. In this case, the operation in the first tilt airflow control mode may be the same as the operation in the pre-tilt airflow control mode immediately before.

In the first embodiment, the operation in the pre-tilt airflow control mode is performed immediately before the heating operation in the first tilt airflow control mode, but the operation in the pre-tilt airflow control mode similar to this pre-tilt airflow control mode may be performed immediately before the heating operation in the first tilt airflow control mode.

In the first embodiment, the first and second horizontal shutters 41 and 51 at the time of completion of the transition to the operation in the pre-tilt airflow control mode are in the postures shown in fig. 25, but may be in postures other than those shown in fig. 25 as long as the angle of separation is narrower than that in the first tilt airflow control mode.

For example, the first horizontal shutter 41 and the second horizontal shutter 51 may be in the postures shown in fig. 27 when the transition to the operation in the pre-tilt airflow control mode is completed. In this case, the rotational speed of the first and second horizontal flaps 41 and 51 for changing from the other posture to the posture of fig. 27 may be faster than the rotational speed of the first and second horizontal flaps 41 and 51 for changing from the posture of fig. 27 to the posture of fig. 5.

The two-dot chain line in fig. 27 indicates 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 horizontal shutter 41 and the second horizontal shutter 51 may be in the postures shown in fig. 28 when the transition to the operation in the pre-tilt airflow control mode is completed. In such a case, the rotation speed of the first horizontal barrier 41 for changing from the other posture to the posture of fig. 28 may be faster than the rotation speed of the first horizontal barrier 41 for changing from the posture of fig. 28 to the posture of fig. 5.

Further, the two-dot chain line in fig. 28 indicates the posture of the first horizontal baffle 41 when the transition to the first oblique airflow control mode is completed.

In the first embodiment, the rotation speed of the indoor fan 10 is reduced when the operation of narrowing the separation angle between the first horizontal baffle 41 and the second horizontal baffle 51 is completed during the period from the start of the operation in the pre-tilt airflow control mode to the completion of the transition to the operation in the first tilt airflow control mode, but this state may be maintained without reducing the rotation speed of the indoor fan 10.

In the first embodiment, both the first and second horizontal flaps 41 and 51 are rotated when the first and second horizontal flaps 41 and 51 are in the posture shown in fig. 25, but only one of the first and second horizontal flaps 41 and 51 may be rotated as long as the posture immediately before the first and second horizontal flaps 41 and 51 satisfies the predetermined condition. In this case, the rotation control of the first and second horizontal flaps 41 and 51 for bringing the postures shown in fig. 25 is simplified.

Here, when the predetermined condition is satisfied, for example, one of the first horizontal shutter 41 and the second horizontal shutter 51 may be in the posture of fig. 25.

When only one of the first and second horizontal flaps 41 and 51 is rotated to decrease the separation angle between the first and second horizontal flaps 41 and 51, the angle between the first horizontal flap 41 and the second horizontal flap 51 with respect to the wind direction of the blown air may be larger in the first oblique airflow control mode of operation. In such a case, the air flow along the larger angle is easily obtained.

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

In the first embodiment, the air conditioner is a pair type including 1 indoor unit 1 and 1 outdoor unit 2, but may be a multiple type including a plurality of indoor units 1 and 1 outdoor unit 2.

In the first embodiment, for example, during the cooling operation, the dehumidifying operation, or the heating operation, the control device 100 may appropriately select one of the first oblique airflow control mode, the ceiling airflow control mode, the vertical airflow control mode, and the second oblique airflow control mode or switch between these modes based on a signal from the indoor temperature sensor T5 or the like.

In the first embodiment, for example, during the cooling operation, the dehumidifying operation, or the heating operation, the user may select a desired mode from among the first oblique airflow control mode, the ceiling airflow control mode, the vertical airflow control mode, and the second oblique airflow control mode, for example, by using a remote controller.

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

In the first embodiment, in the first oblique airflow control mode, the downstream-side interval of the vertical baffle 61 disposed at the left end among the vertical baffles 61 and the vertical baffle 61 disposed at the right end among the vertical baffles 61 is wider than the upstream-side interval, but the intervals may be substantially the same. In short, in the first oblique airflow control mode, the control for expanding the blown air in the left-right direction may be performed or may not be performed.

[ second embodiment ]

Fig. 29 is a control block diagram of an air conditioner according to a second embodiment of the present disclosure.

The indoor unit of the air conditioner includes a human detection sensor 91 that detects a distance to a human in the indoor space R. The control device 200 controls the first and second horizontal barrier motors 73 and 74 based on the detection result of the human detection sensor 91.

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

In the air conditioner having the above-described configuration, since the vertical airflow control mode is switched to the first airflow control mode when the distance detected by the human detection sensor 91 is equal to or less than the predetermined distance, the air blown out from the indoor unit can be directly blown out to the person in the indoor space R at an appropriate timing.

The present disclosure is not limited to the first and second embodiments and the modifications thereof, and can be implemented with various modifications within the scope of the present disclosure. 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 modification of the first embodiment and the second embodiment may be used as an embodiment of the present disclosure.

Description of the reference symbols

1 indoor machine

2 outdoor machine

10 indoor fan

11 compressor

12 four-way switching valve

13 outdoor heat exchanger

14 electric expansion valve

15 indoor heat exchanger

16 gas-liquid separator

20 outdoor fan

30 outer cover

34 blow-out opening

41 first horizontal baffle

41c, 51c upper airfoil surface

41d, 51d lower airfoil surface

Curved surfaces 41e, 41f, 51e

51 second horizontal baffle

51f first curved surface

51g second curved surface

61 vertical baffle

73 first horizontal baffle motor

74 second horizontal flapper motor

83 first vertical baffle group motor

84 second vertical baffle group motor

91 human detecting sensor

100. 200 control device

G1 first vertical baffle group

G2 second vertical baffle group

L1 and L2 communication pipes

RC refrigerant 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 ground temperature sensor

Angle of inclination of theta 1 and theta 2

Claims (6)

1. An air-conditioning indoor unit (1) characterized in that,

the air conditioning indoor unit (1) is provided with:

a housing (30) having a blow-out port (34) through which air from the blower fan (10) is blown out;

a first horizontal blade (41) that controls the vertical direction of the air blown out from the air outlet (34);

a first driving unit (73) for driving the first horizontal blade (41);

a second horizontal blade (51) which is disposed behind the first horizontal blade (41) and controls the vertical direction of the blown air;

a second driving unit (74) for driving 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),

when an operation in a first airflow control mode is to be performed, the control device (100, 200) performs an operation in a second airflow control mode, and then shifts to an operation in the first airflow control mode following the operation in the second airflow control mode, wherein in the first airflow control mode, the interval between the first horizontal blade (41) and the second horizontal blade (51) on the downstream side of the flow of the blown air is made larger than the interval on the upstream side, a part of the blown air is made to flow along the lower blade surface of the first horizontal blade (41) and the other part of the blown air is made to flow along the upper blade surface of the second horizontal blade (51), and in the second airflow control mode, the separation angle between the first horizontal blade (41) and the second horizontal blade (51) is made larger than the separation angle between the first horizontal blade (41) and the second horizontal blade (51) in the first airflow control mode ) The predetermined separation angle is narrow, and the blown air is blown out.

2. An air-conditioning indoor unit (1) according to claim 1,

in the operation of the second airflow control mode, the rotation speed of the air supply fan (10) is set higher than that in the first airflow control mode.

3. 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 separation angle between the first horizontal blade (41) and the second horizontal blade (51) is narrowed by driving one of the first horizontal blade (41) and the second horizontal blade (51).

4. An air conditioning indoor unit (1) according to any one of claims 1 to 3,

in the second airflow control mode, the first horizontal blade (41) and the second horizontal blade (51) are driven such that the angle between the first horizontal blade (41) and the second horizontal blade (51) with respect to the wind direction of the blown air is larger during operation in the first airflow control mode, and the separation angle between the first horizontal blade (41) and the second horizontal blade (51) is narrowed.

5. An 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 in the second airflow control mode is faster than the rotation of the first horizontal blade (41) and/or the second horizontal blade (51) when the operation in the second airflow control mode is shifted to the operation in the first airflow control mode.

6. An air conditioner, characterized in that the air conditioner comprises:

an air conditioning indoor unit (1) according to any one of claims 1 to 5; and

and an air conditioning outdoor unit (2) connected to the air conditioning indoor unit (1) via refrigerant pipes (L1, L2).

Images