CN109708200B

CN109708200B - Control method of air conditioner indoor unit and air conditioner indoor unit

Info

Publication number: CN109708200B
Application number: CN201710994517.0A
Authority: CN
Inventors: 潘杰; 陈彬
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2017-10-23
Filing date: 2017-10-23
Publication date: 2022-11-08
Anticipated expiration: 2037-10-23
Also published as: CN109708200A

Abstract

The invention relates to a control method of an air conditioner indoor unit and the air conditioner indoor unit. A control method of an air-conditioning indoor unit is provided, wherein a fan assembly is arranged in the air-conditioning indoor unit and comprises a front plate provided with an air outlet, a movable panel is mounted on the front plate, and the movable panel is mounted on the front plate through a movable mechanism, and the control method comprises the following steps: a first panel mode in which the movable panel is in a closed position and covers the outlet vent; and a second panel mode in which the movable panel is moved away from the closed position while the fan assembly is stopped. With the control method according to the present invention, the user can safely perform various operations such as changing the sheath and cleaning on the movable panel and the outlet. The use of a removable sheath also provides an economical solution for changing and protecting the appearance of the air conditioning indoor unit.

Description

Control method of air conditioner indoor unit and air conditioner indoor unit

Technical Field

The invention relates to the field of air conditioning, in particular to a control method of an air conditioner indoor unit and a related air conditioner indoor unit.

Background

The casing of the indoor unit of the air conditioner usually has a front plate, an air outlet is arranged on the front plate, and an air guide blade is arranged on the air outlet. In some air conditioning indoor units, a movable panel is further provided on the front panel to shield the air outlet and the air guide vane for safety and aesthetic reasons. However, in the air conditioning indoor unit, the outlet needs to be cleaned after a long time use, but the movable panel shields the outlet, and therefore, it is not easy to clean the outlet.

In addition, in certain circumstances, it may be desirable to provide protection to the panel to prevent damage to the panel itself or to prevent injury from a child accidentally hitting a hard panel. On the other hand, the existing wall-mounted air conditioner indoor unit is still relatively obtrusive when being installed on a wall surface, and people hope to enable the air conditioner indoor unit to be consistent with indoor decoration along with the improvement of requirements of people on living environment.

Therefore, there is a need for an improvement in the panels of existing air conditioning indoor units that provides flexibility in their changes.

Disclosure of Invention

In order to overcome the defects of the air-conditioning indoor unit in the prior art, the invention provides a control method of the air-conditioning indoor unit, wherein a fan assembly is arranged in the air-conditioning indoor unit and comprises a front plate provided with an air outlet, a movable panel is arranged on the front plate, and the movable panel is arranged on the front plate through a movable mechanism, wherein the control method comprises the following steps: a first panel mode in which the movable panel is in a closed position covering the outlet vent; and a second panel mode in which the movable panel is moved away from the closed position while the fan assembly of the indoor air conditioning unit is stopped.

According to another aspect of the present invention, the second panel mode includes moving and stopping the movable panel in the first position in which the entire circumferential edge of the movable panel is exposed outward.

According to still another aspect of the present invention, the second panel mode may further include moving and stopping the movable panel at a second position in which the entire outlet is exposed to the outside.

According to a further aspect of the present invention, the movable panels are at least two, the movable panels are movable relative to each other in a direction substantially parallel to the surface of the front panel, respective inside edges of the at least two movable panels abut against each other in the first panel mode, and the inside edges of the at least two movable panels are separated from each other in the second panel mode.

According to yet another aspect of the present invention, the second panel mode includes selectively moving and stopping the movable panel at one of a first position in which the entire peripheral edge of the movable panel is exposed to the outside and the outlet vent is only partially exposed and a second position in which the inner side edges of the two movable panels are separated to a maximum to expose the entire outlet vent. Thus, in the first position, the sheath can be easily attached to and detached from the movable panel, and in the second position, the outlet can be easily cleaned.

According to a further aspect of the invention, in the first position, the distance between the relatively inner side edges of the two movable panels is D1, D1 being greater than the size of the test finger.

According to a further aspect of the invention, the distance between the opposite inner side edges between the two movable panels is D1, D1 being 1/4-1/2 of the transverse width of the outlet mouth.

According to still another aspect of the present invention, in controlling the movable panels to move to the second position, when the two movable panels approach each other to a distance D2, the moving direction of the movable panels is reversed and moved to a distance D3 between the inner side edges of the two movable panels, D3 being greater than D2, and then the two movable panels are controlled to move relatively until the inner side edges of the two movable panels abut.

According to a further aspect of the present invention, the movable mechanism actuates the movable panel to move in a direction perpendicular to the surface of the front panel, in the first panel mode, the movable panel abuts against the surface of the front panel and the air outlet on the front panel, and in the second panel mode, the movable panel moves to a position away from the front panel.

According to still another aspect of the present invention, in controlling the movable panel to move to the closed position, when the movable panels move to a distance D2 'from each other near the front panel, the movable panels are reversed and move to a distance D3' between the movable panel and the front panel, wherein D3 'is greater than D2', and then the controller controls the movable panel to move toward the front panel until the movable panel abuts on the front panel.

The invention provides an indoor unit of an air conditioner, which comprises a front plate provided with an air outlet, wherein a movable panel is arranged on the front plate, and the movable panel is arranged on the front plate through a movable mechanism.

According to still another aspect of the present invention, in the second panel mode, the attaching and detaching operation of the protector with respect to the movable panel is performed, and/or the cleaning operation of the outlet is performed.

According to an aspect of the present invention, the movable panel includes a first position in which the entire circumferential edge of the movable panel is exposed outward, and the sheath is capable of performing engaging and disengaging operations with respect to the movable panel.

Preferably, the sheath is a resin or silicone sheath.

According to another aspect of the invention, a sheath wraps around the peripheral edge and the front face of the movable panel.

According to still another aspect of the present invention, the two movable panels are disposed one above the other or one on the left and right.

According to yet another aspect of the invention, the movable mechanism includes a guide bar and an electric motor, and the movable panel is a single panel.

According to a further aspect of the present invention, the air outlet is provided with the air guide blade, and when the air guide blade is in the closed position for closing the air outlet, a distance D4 between the back surface of the movable panel and the surface of the air guide blade is at least 3mm.

According to still another aspect of the present invention, the air conditioning indoor unit further includes a casing that is configured by a top panel, a bottom panel, a side frame, and a front panel, and the movable panel extends from the top panel to the bottom panel.

In the control method of the air-conditioning indoor unit according to the present invention, the movable panel thereof may be set to the second panel mode in which the fan assembly is stopped and the air-conditioning indoor unit is not operated, and thus, a user can safely perform necessary operations on the panel and the outlet, such as replacing the jacket and cleaning the outlet.

By adopting the air-conditioning indoor unit, the appearance of the air-conditioning indoor unit can be matched with the interior decoration by adapting the sheath with the proper color pattern, and the appearance of the indoor unit can be updated and changed by replacing the sheath under the condition of not replacing the movable panel. On the other hand, the use of the sheath also protects the movable panel.

In addition, the protective sleeve can be made of resin or silica gel, the appearance of the indoor unit is changed by the protective sleeve, and compared with the movable panel matched with different movable panels, the indoor unit is high in economical efficiency and flexibility.

The controller of the air conditioning indoor unit of the present invention is also particularly configured to move the movable panel to a specific jacket replacement position in which the peripheral edge of the movable panel is exposed to the outside, thus making the attachment and detachment of the jacket very convenient.

In addition, the controller of the air conditioner indoor unit is set to make the movable panel move to the closing position and have a reverse protection movement action, so that the hand clamping prevention protection is provided during the closing process of the movable panel.

Drawings

Fig. 1 shows a front perspective view of an air conditioning indoor unit according to the present invention.

Fig. 2 shows a front view of an air conditioning indoor unit according to the present invention, in which the movable panel is located at a fully open position.

Fig. 3A shows a perspective view of an air conditioning indoor unit according to the present invention, in which a movable panel is located at a position where an outlet port is partially exposed.

Fig. 3B shows a sectional top view of the air conditioning indoor unit according to the present invention, in which the movable panel is located at a position where the outlet port is partially exposed.

Fig. 4 is a partially sectional enlarged view of the movable panel in a partially exposed position of the outlet.

Fig. 5 shows a jacket used in an air conditioning indoor unit according to the present invention.

Fig. 6 shows a schematic view of an air conditioning indoor unit according to a second preferred embodiment of the present invention, in which a movable panel is in an open position.

Detailed Description

The invention is further described in the following description with reference to specific embodiments and the accompanying drawings, in which more details are set forth to provide a thorough understanding of the invention, but it will be apparent that the invention can be practiced in many other ways than those specifically described herein, and that a person skilled in the art can make similar generalizations and deductions as to the practice of the invention without departing from the spirit of the invention, and therefore the scope of the invention should not be limited by the contents of this specific embodiment.

The casing 10 of the air conditioning indoor unit 1 of the present invention includes a top panel 11, a bottom panel (not shown), a side panel 12 including a first side panel 121 and a second side panel 122, and a front panel 15. The front panel 15 is connected to the first side 121 and the second side 122, respectively, and the top panel 11 and the bottom panel are disposed opposite to each other and connected to the side enclosing panels 12 and the front panel 15, respectively, so as to enclose a hollow inner cavity. A fan assembly, a heat exchanger, and a controller (not shown) are disposed in the hollow inner cavity of the indoor unit 1.

The side enclosing plate 12 is formed with a suction surface, and preferably, both the first side plate 121 and the second side plate 122 are formed with a suction surface. The suction side is formed by an open portion of the side wall 12, over which a screen (not shown) may typically be provided. As shown in fig. 2, the outlet 21 is provided on the front plate 15, and the outlet 21 is generally rectangular and preferably covered by vertical wind-guiding blades 26. The air guide blade 26 may be one piece or two pieces. The air guide blade 26 is pivoted to rotate.

A movable panel 16 is further provided in front of the front plate 15, and the movable panel 16 is attached to the front plate 15 via a movable mechanism. Preferably, the front plate 15 and the movable panel 16 are substantially flat plate-shaped. Alternatively, the front plate 15 may be slightly recessed to form an arc-shaped surface, and the movable panel 16 may be also slightly recessed to form an arc-shaped surface. The radii of curvature of the arcuate surfaces of the front plate 15 and the movable panel 16 may be set in the range of 1300-1600 mm.

A cover 50 as shown in fig. 5 is detachably mounted to the movable panel 16. The sheath 50 is preferably made of resin or silicone. The sheath 50 is engaged with the movable panel 16. As shown in fig. 5, the sheath 50 includes a flat portion 51 and a loop extending from the flat portion 51 so as to wrap around both the peripheral edge and the front face of the movable panel 16 when the sheath 50 is mounted on the movable panel 16. The sheath 50 is sized and shaped to match the movable panel 16. The sheath 50 is flexible and the thickness of the sheath 50 is controlled to be between 1-5mm, more preferably between 1-1.5 mm. The thickness of the collar may furthermore be slightly thicker than the planar portion.

The sheath is not limited to the illustrated example and may be configured to be loop-shaped or wrap around at least a portion of the peripheral edge of the movable panel 16, such as wrapping around only four corners of the movable panel 16 or wrapping around only a portion of four sides of the movable panel 16 to expose the corners of the panel. Further, the sheath may also cover a portion of the movable panel.

The flat portions 51 of the cover 50 may be designed with different patterns, colors and surface treatments so that the user may select different covers 50 for mounting to the movable panel 16 depending on the upholstery and personal preference.

According to the present invention, the control method of the air conditioning indoor unit 1 has two panel modes. The first panel mode is also a panel mode in which the movable panel 16 is in the closed position and covers the entire outlet, and the entire indoor unit 1 is in a stopped state. The second panel mode is an operable mode in which the movable panel 16 is opened, and in this mode, the movable panel 16 is moved away from the closed position, so that at least a part of the outlet 21 or the outlet path is opened, and at the same time, the fan assembly of the indoor air conditioner 1 is stopped, that is, the indoor air conditioner 1 is stopped. In the second panel mode, the user can perform operations on the movable panel 16 and the outlet vent 21, such as installing a sheath and cleaning the outlet vent 21, with safety. The switching of the panel mode may be controlled by a controller (not shown) provided in the air conditioning indoor unit 1, and a dedicated button may be provided on an indoor unit control panel or a remote controller.

According to a first preferred embodiment of the present invention, as shown in fig. 1, two

movable panels

161, 162 are provided, which are slidably provided in pairs on the front surface of the front panel 15. The

movable panels

161, 162 are shown in fig. 1 as being arranged side by side in the left-right direction and open to both sides, but it will be understood that they may be stacked up and down so as to open in the up-down direction. As can be seen from fig. 3B, the

movable panels

161, 162 are disposed substantially in close contact with the front panel 15, and when the air conditioning indoor unit 1 is operating, substantially no airflow passes between the front panel 15 and the

movable panels

161, 162.

In this embodiment, the second panel mode comprises in particular two positions, a first position in which the entire peripheral edge of the

movable panels

161, 162 is exposed outwards to perform the operations of installing, replacing the sheath and the like. In the second position, the entire outlet port 21 is exposed to the outside.

The

movable panels

161, 162 are movable between a closed position, a first position and a second position. Fig. 1 shows the closed position of the

movable panels

161, 162, in which the two

movable panels

161, 162 are adjacent to each other and cover the air outlet 21 in the front panel 15. Fig. 2 shows a second position of the

movable panels

161, 162, in which the two

movable panels

161, 162 are separated from each other exposing the whole outlet mouth 21, so that the air flow can flow through the outlet mouth 21. Further, when the

movable panels

161, 162 are opened to both sides to the second position when the air conditioning indoor unit 1 is installed on a wall, the outer longitudinal edges of the

movable panels

161, 162 may substantially abut or approach the wall.

Fig. 3A and 3B show the

movable panels

161, 162 in the first position. In this embodiment, the first position is interposed between the closed position and the second position, and the controller of the air conditioning indoor unit 1 can control the movable mechanism actuation

movable panels

161, 162 to move to the first position and stop in the first position. In the first position, only part of the outlet mouth 21 is exposed, so that the entire circumferential edges of the

movable panels

161, 162 are accessible by means of the space of the outlet mouth 21, and sufficient operating space for fitting and removing the sheath is left.

Preferably, as shown in fig. 3B, the distance between the relatively inner side edges of the two

movable panels

161, 162 is D1, D1 being set to be larger than the size of the test finger. The test is defined in GB 4706.1. More preferably, D1 may be set between 1/4-1/2 of the transverse width dimension of the outlet 21. In one embodiment, the outlet mouth 21 has a transverse width of 120mm.

Preferably, as shown in fig. 4, two air guide vanes 26 are provided in the outlet 21, and the front surfaces of the air guide vanes 26 and the back surfaces of the

movable panels

161 and 162 are spaced apart from each other by a distance D4, and the distance D4 is at least 3mm. This distance D4 provides space for easy handling during sheath removal when the

movable panels

161, 162 are in the position shown in fig. 2.

When it is necessary to install or replace the sheath 50 on the

movable panels

161, 162, the control can be instructed by means of keys specially provided on the control panel or remote control to switch from the first panel mode to the first position of the second panel mode, thus activating the moving mechanism, moving the

movable panels

161, 162 directly from the closed position and stopping to the first position without the operation of the air conditioning indoor unit. After the sheath is completely attached and detached, the button-down command is turned again to switch from the second panel mode to the first panel mode, and the controller actuates the movable mechanism to move the

movable panels

161 and 162 to the second position and then directly to the closed position from the second position.

When the outlet 21 needs to be cleaned, the controller can be instructed by a control panel or a key specially provided on the remote controller to switch from the first panel mode to the second position of the second panel mode, and the

movable panels

161 and 162 are directly moved from the closed position and stopped to the second position without the operation of the indoor unit of the air conditioner. After the cleaning operation is completed, the button-down command is again turned to switch from the second panel mode back to the first panel mode, and the controller actuates the movable mechanism to move the

movable panels

161, 162 from the second position back to the closed position.

In addition, in order to ensure the safety of use and avoid the

movable panels

161, 162 from accidentally catching a person's finger when closed, the controller is configured to have a protective displacement action during the movement of the

movable panels

161, 162 to the closed position.

For the two

movable panels

161, 162 of the first embodiment, which are opened in a translating manner, the controller is configured to, in the process of controlling the

movable panels

161, 162 to move to the fully closed position, as shown in fig. 3B, when the two

movable panels

161, 162 approach each other to a distance D2, the controller controls the

movable panels

161, 162 to move in a reverse direction and move to a position where the distance between the inner side edges of the two

movable panels

161, 162 is D3, where D3 is greater than D2, and then the controller controls the two

movable panels

161, 162 to move relatively until the inner side edges of the two movable panels are abutted to reach the closed position again.

According to the second preferred embodiment of the present invention, as shown in fig. 6, the movable panel 16' provided on the front panel 15' of the air conditioning indoor unit 1 is provided so as to move substantially perpendicular to the surface direction of the front panel 15 '. In this embodiment, the movable panel 16' is generally provided only in one piece.

In this embodiment, the second panel mode specifically includes an open position in which the entire peripheral edge of the movable panel 16' is exposed outwardly and the ventilation path is open to expose the outlet vents 21 as far as possible, and the fan assembly is not operating. Thus, the open position can safely replace the sheath and also can safely clean the air outlet passage.

In the second embodiment, the movable panel 16 'is movable between a closed position, in which the movable panel 16' abuts against the front panel 15 'to cover the outlet mouth 21 of the front panel 15', and an open position, in which the movable panel 16 'is spaced apart from the front panel 15'. The moving mechanism 30 is provided for moving the movable panel 16' between these two positions. The control of the air conditioning indoor unit 1 is arranged to move the movable panel 16' to the open position without the air conditioning indoor unit 1 operating. In this way, in the open position, the operator can easily mount, dismount or replace the sheath 50 with respect to the movable panel 16', and at the same time, the air outlet paths of the front plate 15' and the movable panel 16' can be cleaned in this position.

The movable panel 16 'is movably connected to the front panel 15' by a movable mechanism 30. Preferably, the movable mechanism 30 includes a guide bar 31 connected to the movable panel 16' and an electric motor 32 for moving the guide bar 31. The electric motor 32 is also connected to a controller in the air conditioning indoor unit 1, which controls the electric motor to start and stop to control the position of the movable panel 16'. In the position shown in fig. 6, the guide rod and the electric motor are disposed at a position lower than the middle of the indoor unit of the air conditioner, but may be disposed at other suitable positions according to the arrangement of the internal structure of the indoor unit 1 of the air conditioner. Further, fig. 6 is merely an example of the movable mechanism 30, and other mechanisms suitable for vertically moving the panel may be employed.

For the single movable panel 16' of the second embodiment which is vertically opened, it is preferable that the controller is configured to control the movable panel 16' to move reversely when the movable panels 16' move to a distance D2' from each other near the front plate 15 (as shown in fig. 6) in the process of controlling the movable panel 16' to move to the closed position, and to move to a position where the distance between the movable panel and the front plate 15' is D3' and D3' is greater than D2', and then the controller controls the movable panel 16' to move toward the front plate 15' until the movable panel 16' abuts against the front plate 15' to the closed position.

In the above embodiment, preferably, D2 and D2' may be set to be larger than the size of the experimental finger, and D3' may be about 1-2mm or more than D2 and D2', respectively.

By such a closing arrangement of the movable panel 16', it is possible to surely prevent the fingers of a person from being caught in the closing process of the movable panel 16', and when the movable panel is moved from the position D2/D2 'to the position D3/D3', a space for withdrawing the fingers is left, so that the fingers are prevented from being caught, thereby improving the safety of the use of the air conditioning indoor unit 1.

Further, the movable panel 16 of the air conditioning indoor unit 1 according to the present invention may be provided so as to be embedded in the outlet port 21 of the front panel 15, or embedded in the front panel 15. In other words, the entire circumferential edge of the movable panel 16 abuts against the inner wall of the outlet port 21 or the periphery of the recess of the front panel 15 without being exposed. By the movable mechanism, the movable panel can be moved from the fitting position to an open position in which the peripheral edge of the movable panel is moved away from the air outlet 21 to be exposed outward. The operator can perform the attachment and detachment operation of the sheath in the open position of the movable panel. Under the control of the controller, when the movable panel 16 is in the open position, the air conditioning indoor unit 1 does not operate, so that an operator can conveniently mount and dismount the sheath or clean the movable panel 16 and the front plate 15.

According to yet another embodiment, the movable panel may also be provided in two pieces, and the two movable panels are pivoted at an angle to open. In this case, the controller of the air conditioning indoor unit is configured to control the movable panel to move to a position for installing the protector in a state where the entire circumferential edge of the movable panel is exposed to facilitate attachment and detachment of the protector without operating the air conditioning indoor unit.

The movable panels may be opened by a combination of several movements, for example, two movable panels are embedded in the front panel 15 or the air outlet 21 in a closed state, and when the air outlet 21 needs to be opened, the movable panels first move a distance perpendicular to the surface of the front panel, and then the two movable panels move in opposite directions to leave the middle of the two movable panels a distance, so as to expose the whole air outlet 21.

The air-conditioning indoor unit 1 of the invention comprises a protective sleeve which is sleeved on the movable panel, so as to provide complete protection for the movable panel and also avoid the movable panel accidentally injuring users, especially children, which is particularly important under the condition that the lower part of the movable panel is easily touched by children.

It should be noted that, although the above embodiments take a vertical wall-mounted air conditioner indoor unit as an example, the control method and the sheath of the present invention are not limited thereto, the air conditioner can also be applied to other forms of air conditioner indoor units with movable panels, such as a floor type cabinet machine, a horizontal type wall-mounted machine and the like.

In the control method of the air-conditioning indoor unit 1 according to the present invention, the movable panel thereof can be set to the second panel mode in which the fan assembly is stopped and the air-conditioning indoor unit is not operated, and therefore, the user can safely perform necessary operations on the panel and the outlet, such as replacing the jacket and cleaning the outlet.

With the air-conditioning indoor unit 1 according to the present invention, the appearance of the air-conditioning indoor unit 1 can be matched with the interior decoration by fitting the jacket with a suitable color pattern, and the appearance of the indoor unit can be changed by replacing the jacket without replacing the movable panel. On the other hand, the sheath 50 also protects the movable panel.

The movable panels 16, 16' and the sheath 50 shown in the embodiments are rectangular, their shape is not limited thereto, and the movable panels and the sheath may also have other shapes, for example with curved edges.

In addition, the sheath 50 can be made of resin or silica gel, and the appearance of the indoor unit can be changed by using the sheath 50, so that the indoor unit is more economical and flexible than the indoor unit matched with different movable panels.

The control of the air conditioning indoor unit 1 of the present invention is also particularly configured to move the movable panels 16, 16' to a specific jacket replacement position in which the peripheral edges of the movable panels are exposed to the outside and the indoor unit 1 does not operate, which further improves the ease of attachment and detachment of the jacket 50.

In addition, the controller of the air conditioning indoor unit 1 of the present invention is configured to have a protection shift action during the movement of the movable panels 16, 16 'to the closed position, thereby providing protection against pinch during the closing of the movable panels 16, 16'.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.

Claims

1. A control method of an air-conditioning indoor unit, wherein a fan assembly is arranged in the air-conditioning indoor unit and comprises a front plate provided with an air outlet, a movable panel is mounted on the front plate, and the movable panel is mounted on the front plate through a movable mechanism, and is characterized by comprising the following steps:

a first panel mode in which a controller of the indoor unit of the air conditioner controls the movable panel to be in a closed position and to cover the air outlet; and

a second panel mode in which a controller of the air conditioning indoor unit controls the movable panel to move away from the closed position while the fan assembly is stopped, wherein the second panel mode further includes:

moving and stopping the movable panel in a first position to perform a mounting replacement operation of a sheath on the movable panel, in which an entire circumferential edge of the movable panel is exposed outward; and

moving and stopping the movable panel at a second position for performing a cleaning operation of the outlet port, in which the entire outlet port is exposed to the outside;

wherein the first position is between the closed position and the second position.

2. The control method according to claim 1, wherein the movable panels are at least two, the movable panels move relative to each other in a direction substantially parallel to the surface of the front plate,

in the first panel mode, respective inside edges of at least two of the movable panels abut against each other,

in the second panel mode, the inside edges of at least two of the movable panels are separated from each other.

3. The control method of claim 1, wherein in said first position, the distance between the relatively inner side edges of the two movable panels is D1, said D1 being greater than the size of the test finger.

4. The method of claim 1, wherein the distance between the inner edges of the movable panels is D1, and D1 is 1/4-1/2 of the transverse width of the outlet.

5. The control method according to claim 4, wherein in controlling the movable panels to move to the second position, when the two movable panels approach each other to a distance D2, the moving direction of the movable panels is reversed and the two movable panels are moved to a distance D3 between the inner side edges of the two movable panels, D3 being greater than D2, and then the two movable panels are controlled to move relatively until the inner side edges of the two movable panels abut.

6. The control method according to claim 1, wherein the movable mechanism actuates the movable panel to move in a direction perpendicular to the surface of the front plate,

in the first panel mode, the movable panel abuts against a surface of the front panel and the outlet vent on the front panel,

in the second panel mode, the movable panel is moved to a position away from the front panel.

7. The control method according to claim 6, wherein in controlling the movable panel to move to the closed position, when the movable panel moves to a distance D2 'between each other near the front plate, the movable panel reverses and moves to a distance D3' between the movable panel and the front plate, wherein D3 'is larger than D2', and then the controller controls the movable panel to move toward the front plate until the movable panel is closely attached to the front plate.

8. The control method of claim 5 or 7, wherein D2 or D2' is a size larger than the test finger.

9. An air conditioning indoor unit employing the control method according to claim 1, characterized by further comprising a sheath detachably attached to the movable panel so as to wrap at least a part of a circumferential edge of the movable panel.

10. The indoor unit of an air conditioner according to claim 9, wherein in the second panel mode, an operation of attaching and detaching the protector to and from the movable panel and/or an operation of cleaning the outlet are performed.

11. An indoor unit of an air conditioner as claimed in claim 9, wherein the sheath is a resin or silica gel sheath.

12. An indoor unit of an air conditioner according to any one of claims 9 to 11, wherein the protector wraps the entire circumferential edge and front face of the movable panel.

13. The indoor unit of an air conditioner according to claim 9, wherein the moving mechanism includes a guide rod and an electric motor.

14. An indoor unit for an air conditioner according to claim 9, wherein the outlet port is provided with a guide vane, and a distance D4 between a back surface of the movable panel and a surface of the guide vane is at least 3mm when the guide vane is in a closed position for closing the outlet port.

15. An indoor unit of an air conditioner according to claim 9, further comprising an outer casing formed of a top plate, a bottom plate, a side frame, and the front plate, the movable panel extending from the top plate to the bottom plate.

16. The indoor unit of an air conditioner according to claim 9, wherein in the first panel mode, the circumferential edge of the movable panel is fitted into the outlet port so that the entire circumferential edge of the movable panel is not exposed.