CN108088058B

CN108088058B - Air conditioner indoor unit and control method thereof

Info

Publication number: CN108088058B
Application number: CN201711327234.7A
Authority: CN
Inventors: 刘行; 刘乾坤
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2020-08-04
Anticipated expiration: 2037-12-11
Also published as: CN108088058A

Abstract

The invention discloses an air-conditioning indoor unit and a control method thereof, wherein the air-conditioning indoor unit comprises: the air outlet of the air duct is provided with a front wall surface and a rear wall surface which are oppositely arranged; the first air deflector is rotatably arranged on the shell by a first pivot, and the first pivot is arranged adjacent to the rear wall surface; the second air deflector is rotatably arranged on the shell by a second pivot, the second pivot is positioned between the first pivot and the front wall surface, and the edge of the second air deflector close to the second pivot is suitable for being connected with the edge of the first air deflector far away from the first pivot; and the third air deflector is rotatably arranged on the shell by a third pivot, the third pivot is arranged close to the front wall surface, and the third air deflector is provided with a plurality of air dispersing holes along the thickness direction. The air conditioner indoor unit can effectively be compatible with refrigeration, heating and no-wind functions, and provides more mode selections for users, so that the experience comfort of the users can be effectively improved.

Description

Air conditioner indoor unit and control method thereof

Technical Field

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

Background

With the improvement of living standard, the air conditioner has become one of the indispensable household appliances of many families. Most of the existing air conditioners have the functions of cooling and heating simultaneously so as to maintain the indoor environment temperature within a comfortable range. When the air conditioner is in a cooling or heating mode for a long time, cold air or hot air directly blows to a human body for a long time, and discomfort can be caused to a user. In order to overcome the defects, air conditioners with no wind sensing function are available in the market, but the functions of remote air supply, foot warming and the like are usually sacrificed while the no wind sensing function is realized, so that the experience comfort of users is greatly reduced. Therefore, the existing air conditioner is difficult to be effectively compatible with the functions of refrigeration, heating and no wind sensation.

Disclosure of Invention

The invention mainly aims to provide an air conditioner indoor unit, aiming at enabling an air conditioner to be effectively compatible with refrigerating, heating and windless functions so as to really improve the experience comfort of users.

In order to achieve the above object, an indoor unit of an air conditioner according to the present invention includes:

the air outlet of the air duct is provided with a front wall surface and a rear wall surface which are oppositely arranged;

the first air deflector is rotatably arranged on the shell by a first pivot, and the first pivot is arranged adjacent to the rear wall surface;

the second air deflector is rotatably arranged on the shell by a second pivot shaft, the second pivot shaft is positioned between the first pivot shaft and the front wall surface, and the edge of the second air deflector, which is close to the second pivot shaft, is suitable for being connected with the edge of the first air deflector, which is far away from the first pivot shaft; and

and the third air deflector is rotatably arranged on the shell by a third pivot, the third pivot is arranged close to the front wall surface, and the third air deflector is provided with a plurality of air dispersing holes along the thickness direction.

Preferably, the second air deflector comprises an air guiding portion and an empennage arranged on one side, close to the second pivot, of the air guiding portion, a concave cavity is formed between the empennage and the air guiding portion in a stepped arrangement, and the front end of the first air deflector can rotate into the concave cavity.

Preferably, a width between a side of the wind-guiding portion away from the second pivot and a side of the wind-guiding portion close to the second pivot is W, where W ∈ [100mm, 300mm ].

Preferably, one end of the first air deflector, which is far away from the first pivot, is provided with a first inclined surface, the first inclined surface is formed by extending the windward side of the first air deflector in an inclined manner, which is far away from the first pivot, and one end of the second air deflector, which is close to the second pivot, is provided with a second inclined surface adapted to the first inclined surface.

Preferably, said first pivot is located on a tangential extension of said rear wall surface; or the first pivot is located on a side of the tangentially extending surface of the rear wall surface facing away from the front wall surface.

Preferably, the front wall surface is concavely provided with a containing groove, and the third air deflector is rotatably connected to the front wall surface and can be contained in the containing groove.

The invention also provides a control method of the air-conditioning indoor unit, the air-conditioning indoor unit is the air-conditioning indoor unit according to the embodiment of the invention, the air-conditioning indoor unit comprises a no-wind-sense mode, a refrigeration mode and a heating mode, and the control method comprises the following steps:

s1: starting an indoor unit of the air conditioner and selecting an air outlet mode;

s2: when the no-wind-sensation mode is selected, the first air deflector and the second air deflector are rotated to horizontally guide out the airflow;

s3: when the refrigeration mode is selected, the first air deflector is rotated to guide the air flow to the second air deflector;

s4: when the heating mode is selected, the first air deflector and the second air deflector are rotated to guide the air flow downwards.

Preferably, the no-wind-sensation mode of the indoor unit of the air conditioner at least comprises a no-wind-sensation first stage, in the no-wind-sensation first stage, the first air deflector and the second air deflector are rotated, and two air channels are formed on the upper side and the lower side of the second air deflector; the air-conditioning indoor unit further comprises a detection control unit, wherein the detection control unit is used for detecting the indoor temperature or humidity and controlling the air-conditioning indoor unit to enter a corresponding no-wind-sensation stage according to a preset condition.

Preferably, the no-wind-sensation mode of the air-conditioning indoor unit further includes a no-wind-sensation second stage, and in the no-wind-sensation second stage, the first wind deflector is rotated upwards to enable the front end of the first wind deflector to be in sealing fit with the rear end of the second wind deflector.

Preferably, the no-wind-sensation mode of the air-conditioning indoor unit further includes a no-wind-sensation third stage, and in the no-wind-sensation third stage, the third air deflector rotates downward to the flow surface of the outlet air.

Preferably, when the indoor temperature or humidity reaches a first preset condition, the detection control unit controls the air-conditioning indoor unit to enter a second stage without wind sensation;

when the indoor temperature or humidity does not meet the first preset condition, the detection control unit controls the air conditioner indoor unit to return to the no-wind-feeling first stage;

and when the indoor temperature or humidity reaches a second preset condition, the detection control unit controls the air-conditioning indoor unit to enter a third stage without wind sensation.

Preferably, in the first stage of no wind sensation, the third air deflector is arranged to be attached to the front wall surface.

According to the technical scheme, the first air deflector, the second air deflector and the third air deflector are arranged on the shell of the indoor unit of the air conditioner, and the first air deflector, the second air deflector and the third air deflector are matched with each other, so that the air conditioner can achieve a good use effect in a refrigeration mode, a heating mode and a no-wind-sense mode, and the user experience is improved.

Specifically, in the refrigeration mode, the first air deflector can rotate to the position approximately coinciding with the tangential surface of the rear wall surface of the air duct, which is equivalent to prolonging the air duct, so that the air supply distance can be effectively increased, a better refrigeration effect is achieved, the second air deflector can rotate to be approximately parallel to the first air deflector so as to further prolong the air duct, and can also rotate in the air outlet area of the air outlet so as to change the air direction, so that a user can have more choices. When in the heating mode, the first air deflector, the second air deflector and the third air deflector can be mutually matched to lead out the air flow downwards, so that the heating air flow is guided to the ground as much as possible to realize the foot warming effect. When the wind-sensing-free mode is adopted, the first air deflector, the second air deflector and the third air deflector can be matched with each other to horizontally guide out the air flow, so that the air flow cannot blow a human body directly, the rotating position of the third air deflector can be further adjusted, the air flow can be blown out from the air dispersing holes of the third air deflector, and the better wind-sensing-free function is realized. The air conditioner indoor unit can effectively be compatible with refrigeration, heating and no-wind functions, and provides more mode selections for users, so that the experience comfort of the users can be effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic view of the air conditioning indoor unit of fig. 1 in a cooling mode;

fig. 3 is a schematic view of the air conditioning indoor unit of fig. 1 in a heating mode;

fig. 4 is a schematic view of the air conditioning indoor unit in fig. 1 at a first stage of no wind sensation;

fig. 5 is a schematic view of the air conditioning indoor unit in fig. 1 at a second stage without a wind sensation;

fig. 6 is a schematic view of the air conditioning indoor unit of fig. 1 at a third stage without a wind sensation;

FIG. 7 is a schematic structural view of an embodiment of a second air guiding plate;

FIG. 8 is a schematic cross-sectional view taken along line VIII-VIII of FIG. 7;

FIG. 9 is a schematic structural view of an embodiment of a third air guiding plate;

FIG. 10 is a flow chart of a control method for an indoor unit of an air conditioner according to the present invention;

fig. 11 is a flow chart of a no-wind-sensation mode control method of an air-conditioning indoor unit.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						100	Shell body	121	First pivot	134	Concave cavity
110	Air duct	122	First inclined plane	135	Second inclined plane
						111	Front wall	130	Second air deflector	140	Third air deflector
112	Rear wall surface	131	Second pivot	141	Third pivot
						114	Containing groove	132	Air guide part	142	Air-dispersing hole
120	First air deflector	133	Tail wing	150	Heat insulation layer

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides an indoor unit of an air conditioner.

In an embodiment of the present invention, as shown in fig. 1 to 6, the indoor unit of an air conditioner specifically relates to a wall-mounted indoor unit of an air conditioner, and the indoor unit of an air conditioner includes a casing 100, a first air guiding plate 120, a second air guiding plate 130, and a third air guiding plate 140. An air duct 110 is formed in the housing 100, and an air outlet of the air duct 110 has a front wall 111 and a rear wall 112 that are oppositely arranged. The first air guiding plate 120 is rotatably disposed on the housing 100 with a first pivot 121, and the first pivot 121 is disposed adjacent to the rear wall 112. The second wind deflector 130 is rotatably disposed on the housing 100 with a second pivot 131, the second pivot 131 is located between the first pivot 121 and the front wall 111, and an edge of the second wind deflector 130 close to the second pivot 131 is suitable for being connected to an edge of the first wind deflector 120 away from the first pivot 121. The third air guiding plate 140 is rotatably disposed on the casing 100 by a third pivot 141, the third pivot 141 is disposed adjacent to the front wall 111, and the third air guiding plate 140 has a plurality of air dissipating holes 142 along the thickness direction thereof.

In this embodiment, the casing 100 is used to form the overall appearance of the indoor unit of the air conditioner, the casing 100 includes a chassis, a face frame and a panel, an air inlet is provided on the casing 100, an air duct 110 is formed inside the casing 100, a heat exchanger assembly and a fan are further provided in the casing 100, and external air enters the casing 100 from the air inlet, and is sent out through the air outlet of the air duct 110 under the action of the fan after the heat exchange action of the heat exchanger. Specifically, the first air guiding plate 120 is rotatably mounted on the casing 100 through the first pivot 121, and the first pivot 121 may be a long axis extending along the longitudinal direction of the first air guiding plate 120, a short axis provided at two opposite sides of the longitudinal direction of the first air guiding plate 120, or another type of rotating shaft as long as the first air guiding plate 120 can be rotatably connected to the casing 100. Similarly, the specific structure of the second pivot 131 and the third pivot 141 can refer to the first pivot 121, and is not limited in detail herein.

In a shutdown state, as shown in fig. 1, the third air guiding plate 140 is disposed in the air duct 110 of the casing 100, and an edge of the first air guiding plate 120 away from the first pivot 121 is connected to an edge of the second air guiding plate 130 close to the second pivot 131. The air outlet is closed under the matching of the first air deflector 120 and the second air deflector 130, so that on one hand, dust can be prevented from entering from the air outlet, and on the other hand, the whole air-conditioning indoor unit can be more beautiful.

In the cooling mode, as shown in fig. 2, the first air deflector 120 rotates to a position substantially coinciding with the tangential extension plane of the rear wall surface 112 of the air duct 110, which is equivalent to extending the air duct 110, so that the pressure at the air inlet can be effectively increased, and the air supply distance is further increased. It should be noted that the tangential extension plane is a virtual plane, which is a plane that is tangent to and extends along the edge of the rear wall 112 of the air duct 110. In the cooling mode, the first air guiding plate 120 is preferably overlapped with the tangential extending surface, and in practical applications, the first air guiding plate 120 may swing around the tangential extending surface by a certain angle, which is not limited in this respect. The second air guiding plate 130 can be rotated to a position substantially parallel to the first air guiding plate 120, so that the air duct 110 can be further extended, and the air supply distance can be increased. Of course, the second air guiding plate 130 can also swing in the air outlet area of the air outlet to change the wind direction, thereby meeting different requirements of users. In order to avoid the third air guiding plate 140 from generating resistance to the air flow, the third air guiding plate 140 is preferably attached to the front wall 111 of the air duct 110 in the cooling mode.

In the heating mode, as shown in fig. 3, the first air guiding plate 120, the second air guiding plate 130 and the third air guiding plate 140 can be rotated to a position close to the vertical position to guide the air flow downward, so that the hot air flow can be blown to the ground to the maximum extent. Because the hot air flow density is lower and can rise upwards, better heating experience can be provided for users, and the foot warming function is achieved. In addition, in the heating mode, the first air guiding plate 120 can be kept to be substantially vertical to the ground, and the second air guiding plate 130 and the third air guiding plate 140 swing in parallel to change the wind direction, so that the hot air can be sent to a longer distance.

In the no-wind mode, as shown in fig. 4 to 6, the first wind deflector 120 and the second wind deflector 130 may cooperate with each other to horizontally guide out the airflow to prevent the airflow from directly blowing the human body, and the position of the third wind deflector 140 is adjusted to make the airflow soft by the wind dispersing function of the wind dispersing holes 142 of the third wind deflector 140, thereby achieving a real no-wind feeling and giving a better experience of the user.

According to the technical scheme, the first air deflector 120, the second air deflector 130 and the third air deflector 140 are arranged on the shell 100 of the indoor unit of the air conditioner, and the first air deflector 120, the second air deflector 130 and the third air deflector 140 are matched with each other, so that the air conditioner can achieve a better use effect in a refrigeration mode, a heating mode and a no-wind-sense mode, and the user experience is improved. Specifically, in the cooling mode, the first air guiding plate 120 may be rotated to a position substantially coinciding with the tangential surface of the rear wall surface 112 of the air duct 110, which is equivalent to extending the air duct 110, so as to effectively increase the air supply distance and achieve a better cooling effect, and meanwhile, the user may set the operating state of the second air guiding plate 130 according to the requirement to meet different experiences. In the heating mode, the first air guiding plate 120, the second air guiding plate 130 and the third air guiding plate 140 may cooperate with each other to guide the air flow downward, so that the heating air flow is guided to the ground as much as possible to achieve the foot warming effect. In the non-wind sensing mode, the first wind deflector 120, the second wind deflector 130 and the third wind deflector 140 may cooperate with each other to guide out the airflow horizontally, so as not to blow directly on the human body, and the rotation position of the third wind deflector 140 may be further adjusted, so that the airflow may be blown out from the wind-dispersing hole 142 of the third wind deflector 140, thereby achieving a better non-wind sensing function. The air conditioner indoor unit can effectively be compatible with refrigeration, heating and no-wind functions, and provides more mode selections for users, so that the experience comfort of the users can be effectively improved.

Further, the second wind deflector 130 includes a wind guiding portion 132 and a tail wing 133 disposed on a side of the wind guiding portion 132 close to the second pivot 131, a cavity 134 is formed between the tail wing 133 and the wind guiding portion 132 in a stepped arrangement, and the front end of the first wind deflector 120 can rotate into the cavity 134.

Specifically, in the present embodiment, as shown in fig. 7 and 8, the second wind deflector 130 is designed to be similar to an airframe structure, the second wind deflector 130 includes a wind guiding portion 132 and a tail wing 133, and the tail wing 133 and the wind guiding portion 132 are arranged in a step shape to form a cavity 134. In this way, in the non-wind-sensing mode, the front end of the first wind deflector 120 rotates into the cavity 134 and abuts against the tail wing 133 of the second wind deflector 130, so that the first wind deflector 120 and the second wind deflector 130 are in sealing fit, and the influence of the leakage of the airflow from the gap between the first wind deflector 120 and the second wind deflector 130 on the non-wind-sensing effect is avoided.

Further, the width between the side of the air guiding portion 132 far away from the second pivot 131 and the side of the air guiding portion 132 close to the second pivot 131 is W, wherein W ∈ [100mm, 300mm ]. in this embodiment, the second air guiding plate 130 is designed in an extended manner, so that when the air flow passes through the second air guiding plate 130 in the cooling mode, the air flow is blown farther due to the coanda effect of the air flow, and when the air flow passes through the heating mode, the air flow can be guided to the ground more by the coanda effect, thereby effectively improving the cooling and heating effects, wherein the width of the air guiding portion 132 can be 100mm, 200mm, 300mm, etc., and the wider the air guiding portion 132 has the better effect of extending the air duct 110, but in practical application, the production cost and the specific size of the air conditioner indoor unit are both considered.

Further, a first inclined surface 122 is disposed at an end of the first wind deflector 120 away from the first pivot 121, the first inclined surface 122 is formed by extending obliquely from the windward side of the first wind deflector 120 away from the first pivot 121, and a second inclined surface 135 adapted to the first inclined surface 122 is disposed at an end of the second wind deflector 130 close to the second pivot 131. In the embodiment, as shown in fig. 2 and 5, the front end of the first air guiding plate 120 is provided with a first inclined surface 122, the rear end of the second air guiding plate 130 is provided with a second inclined surface 135, wherein the second inclined surface 135 is parallel to the first inclined surface 122, so that in the no-wind-sensation mode, the first air guiding plate 120 and the second air guiding plate 130 are in sealing fit through the cooperation of the first inclined surface 122 and the second inclined surface 135 which are parallel to each other, thereby preventing wind leakage and further improving the no-wind-sensation experience.

Further, said first pivot 121 is located on a tangential extension of said rear wall 112; or the first pivot 121 is located on the side of the tangential extension of the rear wall 112 facing away from the front wall 111. Specifically, in this embodiment, the first pivot 121 is disposed on the tangential extending surface of the rear wall surface 112, or the first pivot 121 is disposed on a side of the tangential extending surface of the rear wall surface 112 away from the front wall surface 111, so that a gap between the first pivot 121 and the air outlet of the air duct 110 is as small as possible, and thus, the air flow can be effectively prevented from leaking out of the gap, and the user experience is affected. Preferably, the first pivot 121 is disposed on a side of the tangential extension surface of the rear wall surface 112, which is away from the front wall surface 111, so that a staggered fit is formed between the rear side edge of the first air deflector 120 and the air outlet edge of the rear wall surface 112, thereby effectively reducing a gap between the first air deflector 120 and the air outlet of the air duct 110, preventing air leakage, and simultaneously ensuring that the first air deflector 120 can rotate to a position approximately coinciding with the tangential extension surface of the rear wall surface 112 to extend the air duct 110, and increasing the air supply distance.

When the air conditioner is operated, because the first air deflector 120 and the second air deflector 130 are directly contacted by the airflow blown out from the air outlet, the temperature difference between the two sides of the first air deflector 120 and the second air deflector 130 is large, and condensation is easily generated on the surfaces of the first air deflector 120 and the second air deflector 130, thereby affecting the use comfort of users. In order to solve this problem, the first air guiding plate 120 and/or the second air guiding plate 130 are further provided with an insulating layer 150. Preferably, the heat insulation layer 150 is disposed on the windward side of the first air deflector 120 and the second air deflector 130, so that the formation of condensation can be effectively avoided. The insulating layer 150 may be made of inorganic fiber material, such as mineral wool, rock wool, glass wool, etc.; or organic heat insulating material, such as Polyethylene (PE) foam, Polystyrene (PS) foam, Polyurethane (PU) foam, etc. In addition, the insulating layer 150 may be disposed inside the first air guiding plate 120 and the second air guiding plate 130.

Further, the front wall 111 is concavely provided with a receiving groove 114, and the third air guiding plate 140 is rotatably connected to the front wall 111 and can be received in the receiving groove 114. In the embodiment, by disposing the accommodating groove 114, the third air guiding plate 140 can be accommodated in the accommodating groove 114 during the cooling mode, so as to avoid generating resistance to the airflow and affecting the air outlet. The depth of the accommodating groove 114 can be set according to the thickness of the third air deflector 140, and preferably, when the third air deflector 140 rotates into the accommodating groove 114, the edge of the notch of the accommodating groove 114 is substantially flush with the outer surface of the third air deflector 140, or the third air deflector 140 is completely hidden in the accommodating groove 114.

Further, in order to effectively improve the non-wind effect, as shown in fig. 9, the plurality of the air-dispersing holes 142 are arranged in a matrix, and two columns of the air-dispersing holes 142 adjacent to each other in the width direction of the third air deflector 140 are staggered in the length direction. Due to the staggered arrangement of the air dispersing holes 142, the air flows are disturbed after passing through the air dispersing holes 142, interference is generated, the air speed is further reduced, and the air flows are softer. There are various shapes of the air dispersing holes 142, and the air dispersing holes 142 are preferably circular or elongated, but the air dispersing holes 142 may also be diamond-shaped, square-shaped, and so on.

The following describes in detail a control method of an air conditioning indoor unit according to an embodiment of the present invention with reference to fig. 1 to 11, where the air conditioning indoor unit is the air conditioning indoor unit according to the above-mentioned embodiment of the present invention, the air conditioning indoor unit includes a no-wind-sense mode, a cooling mode, and a heating mode, and a specific structure of the air conditioning indoor unit refers to the above-mentioned embodiment, so that the method at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiment, and details are not repeated here.

As shown in fig. 10, the control method of an air conditioning indoor unit according to an embodiment of the present invention includes the steps of:

firstly, an air conditioner indoor unit is started, and an air outlet mode is selected. Specifically, a plurality of buttons are arranged on a panel of the air conditioner indoor unit or an air conditioner remote controller, and different air outlet modes are selected through different buttons.

When the no-wind mode is selected, the first air deflector 120 and the second air deflector 130 are rotated to horizontally guide the air flow out. Specifically, as shown in fig. 4, the first air guiding plate 120 and the second air guiding plate 130 both rotate to positions substantially parallel to the horizontal plane, so that the air flow can be led out horizontally, thereby preventing the air flow from directly blowing the human body, and effectively reducing the wind sensation experience of the user.

When the cooling mode is selected, the first air deflector 120 is rotated to direct the air flow to the second air deflector 130. Specifically, as shown in fig. 2, the first air deflector 120 is rotated to a position substantially coinciding with the tangential extension plane of the rear wall surface 112 of the air duct 110, and at this time, the rear end of the first air deflector 120 is in staggered fit with the rear wall surface 112 of the air duct 110, which is equivalent to extending the air duct 110, so that the pressure of the air inlet can be effectively increased, and the air supply distance is further increased. In this mode, the second air guiding plate 130 may rotate to a position substantially parallel to the first air guiding plate 120, so as to further extend the air duct 110 and increase the air blowing distance. The second air deflector 130 can also be controlled to swing in the air outlet area of the air outlet so as to change the wind direction, thereby meeting different requirements of users. In order to avoid the third air guiding plate 140 from generating resistance to the air flow, the third air guiding plate 140 is preferably attached to the front wall 111 of the air duct 110 in the cooling mode.

When the heating mode is selected, the first air deflector 120 and the second air deflector 130 are rotated to guide the air flow downward. Specifically, as shown in fig. 3, the first air deflector 120, the second air deflector 130 and the third air deflector 140 are controlled to rotate to a position close to the vertical position to guide the air flow downwards, so that the hot air flow can be blown to the ground to the maximum extent. Because the hot air flow density is lower and can rise upwards, better heating experience can be provided for users, and the foot warming function is achieved. Or, in this mode, the first air deflector 120 is controlled to rotate to a position substantially perpendicular to the ground, so that the warm air can flow downward, and the second air deflector 130 and the third air deflector 140 are controlled to swing in parallel to change the wind direction, so that the warm air can be sent to a longer distance.

Further, the no-wind-sensation mode of the indoor unit of the air conditioner at least includes a no-wind-sensation first stage, in the no-wind-sensation first stage, the first air deflector 120 and the second air deflector 130 are rotated, and two air flow channels are formed on the upper side and the lower side of the second air deflector 130; the air-conditioning indoor unit further comprises a detection control unit, wherein the detection control unit is used for detecting the indoor temperature or humidity and controlling the air-conditioning indoor unit to enter a corresponding no-wind-sensation stage according to a preset condition.

Specifically, as shown in fig. 4, when the no-wind-sensation button is selected, the indoor unit of the air conditioner automatically enters the first no-wind-sensation stage, and at this time, the first air deflector 120 and the second air deflector 130 both rotate to positions substantially parallel to the horizontal direction, so that two air flow channels are formed on the upper side and the lower side of the second air deflector 130, and the air flow can be horizontally led out. In this stage, the air current can be avoided directly blowing the human body and experience in order to reduce user's wind sense, can also guarantee simultaneously that the air current has certain ability output, makes indoor temperature can satisfy user's demand. Certainly, the no-wind-sensation mode can also comprise other multiple stages, the indoor unit of the air conditioner can detect the indoor temperature or humidity through the detection control unit and then automatically select to enter the corresponding no-wind-sensation stage under the control of the detection control unit, so that the optimal no-wind-sensation experience is provided for the user. Wherein, the detection control unit can be a temperature or humidity sensor.

Further, the no-wind-sensation mode of the indoor unit of the air conditioner further includes a no-wind-sensation second stage, in which the first wind deflector 120 is rotated upward to hermetically fit the front end of the first wind deflector 120 with the rear end of the second wind deflector 130.

Specifically, as shown in fig. 5, in the second stage without wind sensation, the first wind deflector 120 rotates upward to abut against and be in sealing fit with an edge of the second wind deflector 130 close to the second pivot 131, so that the airflow channel on the lower side of the second wind deflector 130 is closed, the capability output of the airflow is further reduced, and the wind sensation experience of the user is further reduced.

Further, the no-wind-sensation mode of the indoor unit of the air conditioner further includes a third no-wind-sensation stage, and in the third no-wind-sensation stage, the third air deflector 140 rotates downward to the flow surface of the outlet air.

Specifically, as shown in fig. 6, in the third stage of no wind sensation, the third air guiding plate 140 is rotated to the flow surface of the outlet air, and preferably, the third air guiding plate 140 is rotated to be perpendicular to the outlet air direction to block the air flow channel on the upper side of the second air guiding plate 130, so that the air flow needs to be sent out through the air dispersing holes 142 of the third air guiding plate 140, and thus, under the effect of the air dispersing holes 142, the sent air flow is more dispersed and softer, and thus, the true no wind sensation experience can be provided for the user.

Further, the user can set the preset condition to be finally achieved by the indoor side according to the requirement, the preset condition can be the temperature and/or the humidity of the indoor side, and the indoor unit of the air conditioner can automatically select the corresponding no-wind-sensation stage according to the preset condition of the user. As shown in fig. 11, the control method of the no-wind-feeling mode of the air-conditioning indoor unit includes the following steps:

when the no-wind-feeling mode is selected, the indoor unit of the air conditioner automatically enters the no-wind-feeling first stage. In the stage, the airflow is led out in parallel, certain wind power output is still kept, and the strong regulating effect is kept on the indoor temperature or humidity, so that the indoor environment can meet the preset conditions of users as soon as possible.

When the detection control unit detects that the indoor temperature or humidity reaches a first preset condition, the detection control unit controls the air-conditioning indoor unit to enter a second stage without wind sensation. In particular, at this stage, the output of the airflow is further reduced, thereby further reducing the user's wind experience.

When the detection control unit detects that the indoor temperature or humidity does not meet the first preset condition, the detection control unit controls the air conditioner indoor unit to return to the first stage without wind sensation.

And when the detection control unit detects that the indoor temperature or humidity reaches a second preset condition, the detection control unit controls the air-conditioning indoor unit to enter a third stage without wind sensation. At this stage, the indoor temperature or humidity tends to be consistent with the preset conditions of the user, and on the basis of maintaining the room temperature, the wind power is further reduced, so that the air flow is sent out from the air dispersing holes 142 of the third air deflector 140, and under the action of the air dispersing holes 142, the sent air flow is more dispersed and softer, and thus the real non-wind experience can be provided for the user.

It should be noted that, after entering the no-wind mode, the no-wind first stage cannot be exited, and both the no-wind second stage and the no-wind third stage can be exited.

Further, in order to reduce the wind resistance when the airflow is outputted, in the first stage of no wind sensation, the third air guiding plate 140 is attached to the front wall surface 111. Preferably, the front wall 111 of the air duct 110 is provided with a receiving groove 114, and the third air guide can be received in the receiving groove 114. Similarly, in both the cooling mode and the second stage without wind sensation, the third air guiding plate 140 is preferably attached to the front wall surface 111 to reduce wind resistance.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

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

the second air deflector is rotatably arranged on the shell through a second pivot shaft, the second pivot shaft is positioned between the first pivot shaft and the front wall surface, the edge of the second air deflector, which is close to the second pivot shaft, is suitable for being connected with the edge of the first air deflector, which is far away from the first pivot shaft, the second air deflector comprises an air guiding part and an empennage arranged on one side, which is close to the second pivot shaft, of the air guiding part, a concave cavity is formed between the empennage and the air guiding part in a stepped arrangement, and the front end of the first air deflector can rotate into the concave cavity; and

the third air deflector is rotatably arranged on the shell by a third pivot, the third pivot is arranged close to the front wall surface, and the third air deflector is provided with a plurality of air dispersing holes along the thickness direction;

the air-conditioning indoor unit is provided with a no-wind-sensation mode, the no-wind-sensation mode of the air-conditioning indoor unit comprises a no-wind-sensation third stage, in the no-wind-sensation third stage, the front end of the first air deflector rotates into the concave cavity and is abutted against the tail wing of the second air deflector, the front end of the second air deflector is spaced from the shell so as to horizontally guide out airflow, and the third air deflector rotates downwards to a ventilation surface of the outlet air;

the first pivot is located on one side, away from the front wall surface, of a tangential extension surface of the rear wall surface, the tangential extension surface is a virtual plane tangent to and extending from the edge of the rear wall surface, and a staggered fit is formed between the rear side edge of the first air deflector and the air outlet edge of the rear wall surface, so that when the indoor unit of the air conditioner is in a refrigeration mode, the first air deflector is overlapped with the tangential extension surface.

2. The indoor unit of claim 1, wherein a width between a side of the air guide portion away from the second pivot and a side of the air guide portion close to the second pivot is W, wherein W ∈ [100mm, 300mm ].

3. The indoor unit of an air conditioner according to claim 1 or 2, wherein a first inclined surface is provided at an end of the first air guiding plate away from the first pivot, the first inclined surface is formed by extending the first air guiding plate obliquely away from the first pivot from a windward side thereof, and a second inclined surface adapted to the first inclined surface is provided at an end of the second air guiding plate close to the second pivot.

4. The indoor unit of claim 1, wherein the front wall surface is recessed with a receiving groove, and the third air deflector is rotatably connected to the front wall surface and received in the receiving groove.

5. A control method of an indoor unit of an air conditioner, the indoor unit of the air conditioner is the indoor unit of the air conditioner according to any one of claims 1 to 4, the indoor unit of the air conditioner comprises a no-wind-sensation mode, a cooling mode and a heating mode, and the control method comprises the following steps:

s4: when the heating mode is selected, the first air deflector and the second air deflector are rotated to guide the air flow downwards;

the no-wind-sensation mode of the indoor unit of the air conditioner comprises a no-wind-sensation third stage, and in the no-wind-sensation third stage, the third air deflector rotates downwards to the air outlet circulation surface.

6. The control method of an indoor unit of an air conditioner as claimed in claim 5, wherein the no-wind-feeling mode of the indoor unit of an air conditioner includes at least a first no-wind-feeling stage in which the first air deflector and the second air deflector are rotated to form two air flow channels at upper and lower sides of the second air deflector; the air-conditioning indoor unit further comprises a detection control unit, wherein the detection control unit is used for detecting the indoor temperature or humidity and controlling the air-conditioning indoor unit to enter a corresponding no-wind-sensation stage according to a preset condition.

7. The control method of an indoor unit of an air conditioner as claimed in claim 6, wherein the no-wind mode of the indoor unit further includes a no-wind second stage in which the first air guide plate is rotated upward to sealingly engage the front end of the first air guide plate with the rear end of the second air guide plate.

8. The control method of an indoor unit of an air conditioner according to claim 7, wherein the detection control unit controls the indoor unit of the air conditioner to enter a non-wind second stage when the indoor temperature or humidity reaches a first preset condition;

9. The control method of an indoor unit of an air conditioner according to any one of claims 6 to 8, wherein the third air guide plate is provided so as to be attached to the front wall surface in the non-wind-sensation first stage.