CN115597114B

CN115597114B - Air conditioner indoor unit and its control method, device, storage medium and air conditioner

Info

Publication number: CN115597114B
Application number: CN202110717621.1A
Authority: CN
Inventors: 马列
Original assignee: GD Midea Air Conditioning Equipment Co Ltd; Guangzhou Hualing Refrigeration Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd; Guangzhou Hualing Refrigeration Equipment Co Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2026-01-30
Anticipated expiration: 2041-06-28
Also published as: CN115597114A

Abstract

This invention discloses an indoor air conditioner unit and its control method, device, storage medium, and air conditioner. The indoor air conditioner unit includes a casing, a heat exchanger, and a fan assembly. The casing forms an air duct, an air inlet, a first air outlet, and a second air outlet connected to the air duct. The air duct includes an air inlet section adjacent to the air inlet. The heat exchanger is disposed within the air inlet section. The fan assembly is disposed within the air duct and located outside the air outlet of the air inlet section. The fan assembly is configured to drive airflow from one of the first and second air outlets, into the air duct through the air inlet, and out through the other of the first and second air outlets. In this invention, a portion of the airflow flows into the air duct through the air inlet, is heated by the heat exchanger, and is then sent to the fan assembly. Another portion of the airflow flows into the air duct through one of the first and second air outlets and is sent to the fan assembly. The two airflows are thoroughly mixed by the fan assembly and then sent out through the other of the first and second air outlets, resulting in a uniform temperature distribution of the outgoing airflow.

Description

Air conditioner indoor unit, control method and device thereof, storage medium and air conditioner

Technical Field

The present invention relates to the field of air conditioning technologies, and in particular, to an air conditioner indoor unit, a control method and apparatus thereof, a storage medium, and an air conditioner.

Background

In order to improve the use experience of a user, the conventional air conditioner can supply air in a mixed air mode, specifically, one part of indoor air flows in through the mixed air duct, the other part of indoor air flows in through the heat exchange air duct, and the two air flows are mixed and then are sent out from the air outlet together, so that the phenomenon that the air supply temperature and the room temperature of the air conditioner are too large in difference and uncomfortable feeling of a human body is caused is avoided.

However, in this air mixing mode, the air flow subjected to heat exchange and the air flow not subjected to heat exchange may not be sufficiently fused, resulting in uneven temperature distribution of the air flow for air supply, and poor human body feeling.

Disclosure of Invention

The invention mainly aims to provide an air conditioner indoor unit with better air mixing effect and more uniform temperature distribution of supply air flow, a control method and device thereof, a storage medium and an air conditioner.

To achieve the above object, the indoor unit of an air conditioner includes:

the shell is provided with an air duct, an air inlet, a first air inlet and a second air inlet, wherein the air inlet is communicated with the air duct, and the air duct comprises an air inlet section adjacent to the air inlet;

a heat exchanger arranged in the air inlet section, and

The fan assembly is arranged in the air duct and is positioned outside the air outlet end of the air inlet section;

Wherein the fan assembly is configured to drive air flow from one of the first and second vents and the air inlet into the air duct and out of the other of the first and second vents.

In an embodiment, a first cover plate and a second cover plate are movably arranged on the casing, the first cover plate is arranged on the first air port in an openable manner, and the second cover plate is arranged on the second air port in an openable manner.

In an embodiment, the casing has a mounting side and a front side located in front of the mounting side, the first air port and the second air port are arranged at intervals in the up-down direction, the first air port is opened forward and upward, and the second air port is opened downward;

the first cover plate is rotatably arranged on the upper side edge of the first air port, the opening degree of the first cover plate is more than or equal to 0 degree and less than or equal to 50 degrees, and/or,

The second cover plate is rotatably arranged at the rear side edge of the second air port, and the opening degree of the second cover plate is more than or equal to 0 degree and less than or equal to 90 degrees.

In one embodiment, the first air port and the second air port are arranged at intervals in the up-down direction;

The fan assembly comprises a bidirectional wind wheel, the bidirectional wind wheel is arranged to be capable of rotating forward or reversely, so that when the bidirectional wind wheel rotates forward, air flow is driven to flow into the air duct from the second air port and the air inlet and to be sent out from the first air port, and when the bidirectional wind wheel rotates reversely, air flow is driven to flow into the air duct from the first air port and the air inlet and to be sent out from the second air port.

In an embodiment, the air duct further comprises a first air duct section adjacent to the first air port, and a second air duct section adjacent to the second air port;

The indoor unit of the air conditioner further comprises an air duct switching plate, the air duct switching plate forms part of an air duct wall of the air duct, the air duct switching plate is movably arranged on the machine shell so as to have a first working position and a second working position, the air duct switching plate gradually increases an air inlet port of the first air duct section in a movable stroke of switching from the first position to the second position, and the air duct switching plate gradually increases the air inlet port of the second air duct section in a movable stroke of switching from the second position to the first position.

In an embodiment, the bidirectional wind wheel is a cross flow wind wheel, and the heat exchanger is arranged in an arc plate shape bent towards the air inlet.

In an embodiment, the bidirectional wind wheel is a through-flow wind wheel, the air inlet is located between the first air inlet and the second air inlet in the up-down direction, and the air duct switching plate is arranged on one side of the through-flow wind wheel, which is opposite to the air inlet, and is in an arc plate-shaped arrangement which is bent towards the direction away from the through-flow wind wheel.

In an embodiment, the air duct switching plate is rotatably mounted on the casing, and the rotating shaft of the air duct switching plate and the rotating shaft of the through-flow wind wheel are arranged side by side, the air duct switching plate is provided with a first rotating end and a second rotating end which are oppositely arranged at two sides of the rotating shaft, the first rotating end is close to the first air duct section, and the second rotating end is close to the second air duct section;

When the air duct switching plate is in the first working position, the first rotating end is far away from the through-flow wind wheel, the second rotating end is close to the through-flow wind wheel, and when the air duct switching plate is in the second working position, the first rotating end is close to the through-flow wind wheel, and the second rotating end is far away from the through-flow wind wheel.

In one embodiment, in the axial direction of the cross flow wind wheel, an included angle between a connecting line between the rotating shaft and the vertical direction is more than or equal to 30 degrees and less than or equal to 60 degrees, and/or,

The radius of the cross flow wind wheel is R, and the minimum distance S between the rotating shaft and the rotating shaft is more than or equal to 1.2R and less than or equal to 1.6R.

In an embodiment, the air duct wall of the air inlet section includes a first volute tongue and a second volute tongue, the first volute tongue and the second volute tongue are arranged at intervals in the up-down direction, the first volute tongue extends from the upper direction of the air inlet to the direction of the cross flow wind wheel, and the second volute tongue extends from the lower direction of the air inlet to the direction of the cross flow wind wheel.

In one embodiment, the minimum distance between the first volute tongue and the rotating shaft is greater than or equal to 1.1R and less than or equal to 1.3R, and/or,

The minimum distance between the second volute tongue and the rotating shaft is more than or equal to 1.1R and less than or equal to 1.3R, and/or,

In the axial direction of the cross flow wind wheel, the included angle between the connecting line between the closest point of the first volute tongue and the cross flow wind wheel and the rotating shaft and the vertical direction is more than or equal to 0 degree and less than or equal to 50 degrees, and/or,

And an air inlet angle of the through-flow wind wheel formed between the first volute tongue and the second volute tongue is more than or equal to 150 degrees and less than or equal to 180 degrees.

In one embodiment, the casing has a mounting side for mounting the indoor unit of the air conditioner and a front side located in front of the mounting side, and the air inlet is formed in the front side of the casing;

The front side of the shell is provided with a panel extending along the vertical direction, the panel is arranged at the air inlet in an openable way, the panel is provided with a first opening position where the upper end of the panel is rotationally connected with the shell and the lower end of the panel is separated from the shell, and a second opening position where the lower end of the panel is rotationally connected with the shell and the upper end of the panel is separated from the shell in an opening state.

In order to achieve the above object, the present invention further provides a control method of an air conditioning indoor unit, where the air conditioning indoor unit is the air conditioning indoor unit as described above, a first cover plate and a second cover plate are movably disposed on the casing, the first cover plate is openably disposed at the first air port, and the second cover plate is openably disposed at the second air port;

the control method of the air conditioner indoor unit comprises the following steps:

Acquiring a working mode of the air conditioner indoor unit;

And controlling the opening and closing of the first cover plate and/or the second cover plate according to the working mode, and controlling the fan assembly to work.

In an embodiment, the step of controlling the opening and closing of the first cover plate and/or the second cover plate according to the operation mode, and controlling the fan assembly to operate includes:

When the working mode is a wind mixing mode, the first cover plate and the second cover plate are controlled to be opened, and the opening degree of the first cover plate or the second cover plate is controlled according to a preset wind mixing gear.

In an embodiment, the air conditioning indoor unit is the air conditioning indoor unit described above;

the step of controlling the opening and closing of the first cover plate and/or the second cover plate according to the working mode and controlling the fan assembly to work comprises the following steps:

when the working mode is a refrigerating and air mixing mode, the bidirectional wind wheel is controlled to rotate positively, the first cover plate and the second cover plate are controlled to be opened, and/or,

When the working mode is a refrigeration non-mixing mode, the bidirectional wind wheel is controlled to rotate positively, the first cover plate is controlled to be opened, the second cover plate is controlled to be closed, and/or,

When the working mode is a heating and air mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the first cover plate and the second cover plate are controlled to be opened, and/or,

When the working mode is a heating non-mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the first cover plate is controlled to be opened, and the second cover plate is controlled to be closed.

When the working mode is a refrigerating and air mixing mode, the bidirectional wind wheel is controlled to rotate positively, the air duct switching plate is controlled to be switched to the first working position, the first cover plate and the second cover plate are controlled to be opened, and/or,

When the working mode is a refrigeration non-mixing mode, the bidirectional wind wheel is controlled to rotate positively, the air duct switching plate is controlled to switch to the first working position, the first cover plate is controlled to be opened, the second cover plate is controlled to be closed, and/or,

When the working mode is a heating air mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the air duct switching plate is controlled to be switched to the second working position, the first cover plate and the second cover plate are controlled to be opened, and/or,

When the working mode is a heating non-mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the air duct switching plate is controlled to be switched to the second working position, the first cover plate is controlled to be opened, and the second cover plate is controlled to be closed.

When the working mode is a refrigerating and air mixing mode, the bidirectional wind wheel is controlled to rotate positively, the panel is controlled to be switched to the first opening position, the opening degree of the panel is controlled according to a preset air outlet gear, the first cover plate and the second cover plate are controlled to be opened, and/or,

When the working mode is a refrigeration non-air mixing mode, the bidirectional wind wheel is controlled to rotate positively, the panel is controlled to be switched to the first opening position, the opening degree of the panel is controlled according to a preset air outlet gear, the first cover plate is controlled to be opened, the second cover plate is controlled to be closed, and/or,

When the working mode is a heating air mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the panel is controlled to be switched to the second opening position, the opening degree of the panel is controlled according to a preset air outlet gear, the first cover plate and the second cover plate are controlled to be opened, and/or,

When the working mode is a heating non-mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the panel is controlled to be switched to the second opening position, the opening degree of the panel is controlled according to a preset air outlet gear, the first cover plate is controlled to be opened, and the second cover plate is controlled to be closed.

In order to achieve the above object, the present invention also provides a control device, comprising a memory, a processor and a control program of an air conditioner indoor unit stored in the memory and capable of running on the processor, wherein the control program of the air conditioner indoor unit is executed by the processor to realize the steps of the control method of the air conditioner indoor unit.

The invention also provides an air conditioner comprising the control device of the air conditioner indoor unit, or

An air conditioner indoor unit as described above.

In order to achieve the above object, the present invention further provides a storage medium having stored thereon a control program of an air conditioning indoor unit, which when executed by a processor, implements the steps of the control method of an air conditioning indoor unit as described above.

The invention provides an air conditioner indoor unit which comprises a casing, a heat exchanger and a fan assembly, wherein the casing is provided with an air channel, an air inlet communicated with the air channel, a first air inlet and a second air inlet, the air channel comprises an air inlet section adjacent to the air inlet, the heat exchanger is arranged in the air inlet section, the fan assembly is arranged in the air channel and is positioned outside an air outlet end of the air inlet section, and the fan assembly is arranged to drive air flow to flow into the air channel from one of the first air inlet and the second air inlet and flow out from the other of the first air inlet and the second air inlet. In the embodiment provided by the invention, through the design that the heat exchanger is arranged in front of the fan assembly, one part of air flow flows into the air duct through the air inlet, is sent to the fan assembly after heat exchange by the heat exchanger, and the other part of air flow flows into the air duct through one of the first air inlet and the second air inlet and is sent to the fan assembly, and the two air flows are fully stirred and mixed by the fan assembly and are sent out from the other one of the first air inlet and the second air inlet, so that the temperature distribution of the sent air flows is uniform.

The control method of the air conditioner indoor unit comprises the following steps of obtaining an air outlet mode of the air conditioner indoor unit, controlling the opening and closing of the first cover plate and/or the second cover plate according to the air outlet mode, and controlling the fan assembly to work. According to the invention, the air conditioner indoor unit is switched among various air supply modes such as cooling and mixing air, heating and mixing air, cooling and non-mixing air, heating and mixing air and the like by controlling the fan assembly and the first cover plate and/or the second cover plate, so that the air outlet mode of the air conditioner indoor unit is diversified, more choices are provided for users, and the use experience is better.

Drawings

Fig. 1 is a schematic structural diagram of an indoor unit of an air conditioner in a closed state according to an embodiment of the present invention;

FIG. 2 is a schematic air-out diagram of the indoor unit in FIG. 1 in a cooling non-mixing mode;

FIG. 3 is a schematic air-out diagram of the indoor unit in FIG. 1 in a heating non-mixing mode;

fig. 4 is an air-out schematic diagram of the air conditioner indoor unit in fig. 1 in a cooling air mixing mode;

FIG. 5 is a schematic air-out diagram of the indoor unit in FIG. 1 in a heating and air-mixing mode;

FIG. 6 is a schematic diagram illustrating an operating position of the track switch board in FIG. 1;

FIG. 7 is a schematic diagram of important parameters of the indoor unit of the air conditioner in FIG. 1;

FIG. 8 is a front view of the cross flow rotor of FIG. 1;

FIG. 9 is a cross-sectional view at A-A of FIG. 8;

FIG. 10 is a cross-sectional view at B-B in FIG. 8;

FIG. 11 is a schematic diagram of an air conditioner indoor unit in a cooling mode according to the prior art;

fig. 12 is a schematic diagram of air outlet of an indoor unit of an air conditioner in a heating mode in the prior art;

FIG. 13 is a schematic structural diagram of a control device for a hardware operating environment according to an embodiment of the present invention

Fig. 14 is a schematic diagram of a first embodiment of a control method of an indoor unit of an air conditioner according to the present invention;

fig. 15 is a schematic diagram of a second embodiment of a control method of an indoor unit of an air conditioner according to the present invention;

fig. 16 is a schematic diagram of a third embodiment of a control method of an indoor unit of an air conditioner according to the present invention;

fig. 17 is a flowchart illustrating an embodiment of a control method of an indoor unit of an air conditioner according to the present invention.

Reference numerals illustrate:

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

In order to improve the use experience of a user, the conventional air conditioner can supply air in a mixed air mode, specifically, one part of indoor air flows in through the mixed air duct, the other part of indoor air flows in through the heat exchange air duct, and the two air flows are mixed and then are sent out from the air outlet together, so that the phenomenon that the air supply temperature and the room temperature of the air conditioner are too large in difference and uncomfortable feeling of a human body is caused is avoided. However, in this air mixing mode, the air flow subjected to heat exchange and the air flow not subjected to heat exchange may not be sufficiently fused, resulting in uneven temperature distribution of the air flow for air supply, and poor human body feeling.

In order to solve the above technical problems, the present invention provides an air conditioner indoor unit 100 and an air conditioner including the air conditioner indoor unit 100. The air conditioner may be an integral air conditioner or a split air conditioner. The split air conditioner comprises an air conditioner outdoor unit and the air conditioner indoor unit 100 provided by the invention, wherein the air conditioner indoor unit 100 is connected with the air conditioner outdoor unit through a refrigerant pipe, and the air conditioner indoor unit 100 realizes heat exchange and air supply indoors. The integrated air conditioner comprises the air conditioner indoor unit 100 provided by the invention, the air conditioner indoor unit 100 realizes indoor heat exchange and air supply, and the air conditioner also comprises an outdoor side heat exchange structure which is integrally arranged with the air conditioner indoor unit 100.

Fig. 1 to 5 are schematic structural diagrams of an embodiment of an indoor unit 100 of an air conditioner according to the present invention. The description of the azimuth and the directivity in the present embodiment is applicable only to the states of the air conditioning indoor unit 100 and the air conditioner in normal use, and does not include the states of the air conditioning indoor unit 100 and the air conditioner in installation, transportation, and the like. In this embodiment, the vertical direction refers to a direction substantially parallel to the gravitational direction, but a range of an angle of not more than 90 degrees from the gravitational direction, the vertical direction refers to a direction parallel to the gravitational direction, and the horizontal direction refers to a direction substantially perpendicular to the gravitational direction and not parallel to the gravitational direction.

As shown, the air conditioning indoor unit 100 includes a cabinet 10, a heat exchanger 50, and a fan assembly 301. The casing 10 is formed with an air duct 14, an air inlet 13, a first air inlet 11 and a second air inlet 12, which are communicated with the air duct 14, the air duct 14 comprises an air inlet section 140 adjacent to the air inlet 13, the heat exchanger 50 is arranged in the air inlet section 140, the fan assembly 301 is arranged in the air duct 14 and is positioned at an air outlet end of the air inlet section 140, namely, the opening is positioned at an air outlet side of the heat exchanger 50. Wherein the fan assembly 301 is configured to drive an air flow from one of the first and second air openings 11, 12 and the air inlet 13 into the air duct 14 and out of the other of the first and second air openings 11, 12.

The specific material and shape of the casing 10 are not limited, and specifically, the casing 10 is generally made of engineering plastics, and is used for protecting the fan assembly 301, the heat exchanger 50, and other components in the air conditioning indoor unit 100, and for supporting the air conditioning indoor unit 100. The specific shape of the casing 10 is set according to the specific type of the indoor unit 100 and the distribution of the components therein, and the indoor unit 100 is taken as an example, the casing 10 is generally in a cylindrical shape extending in the vertical direction, and the indoor unit 100 is supported on the ground by a chassis provided at the bottom of the casing 10. In the present embodiment, the air conditioning indoor unit 100 is a wall-mounted air conditioning indoor unit 100, the casing 10 is disposed to extend substantially horizontally, and the rear side of the casing 10 is a mounting side 60 for mounting and fixing to a building structure such as a wall surface to support the air conditioning indoor unit 100.

Further, an air duct 14 is formed in the casing 10, the air duct 14 is used for realizing heat exchange and/or air mixing, the air duct 14 refers to a channel for flowing heat exchange airflow, the air duct 14 is provided with an air duct wall surrounding and forming the air duct 14, and the air duct wall can be integrally arranged with the casing, can be separately arranged with the casing, and can be composed of a plurality of sections which are separately arranged. The specific structure and configuration of the air duct 14 is not limited. The air duct 14 is provided with three air inlets which are respectively communicated with the indoor space and comprise the air inlet 13, the first air inlet 11 and the second air inlet 12, and the air inlet 13, the first air inlet 11 and the second air inlet 12 are mutually arranged at intervals. The air duct 14 includes an air inlet section 140 adjacent to the air inlet 13, and the air inlet section 140 is specifically located on the air outlet side of the air inlet 13 and is disposed adjacent to the air inlet 13. In this embodiment, the heat exchanger 50 is disposed in the air inlet section 140, so that the air flowing to the air duct 14 via the air inlet 13 first passes through the heat exchanger 50. The fan assembly 301 is disposed at the air outlet side of the heat exchanger 50, and the fan assembly 301 is located outside the air outlet end of the air inlet section 140, so as to drive indoor air to flow into the air duct 14. One of the first tuyere 11 and the second tuyere 12 serves as an air inlet passage for mixing air, and the other serves as an air outlet passage, the function of which depends on the arrangement positions of the first tuyere 11 and the second tuyere 12. Specifically, the fan assembly 301 has an air inlet side and an air outlet side, one of the first air port 11 and the second air port 12 is located on the air inlet side of the fan assembly 301 to serve as a mixed air inlet channel, and the other of the first air port 11 and the second air port 12 is located on the air outlet side of the fan assembly 301 to serve as an air outlet channel.

In this embodiment, when the fan assembly 301 works, a part of indoor air is driven to flow from the air inlet of the first air inlet 11 and the second air inlet 12 to the fan assembly 301, another part of indoor air flows from the air inlet 13 to the fan assembly 301 after heat exchange is performed by the heat exchanger 50 in the air inlet section 140, and the two airflows are fully stirred and mixed in the air duct 14 under the action of the fan assembly 301, so that the temperature/humidity are uniformly distributed, and then the indoor air is sent from the air inlet of the first air inlet 11 and the air outlet of the second air inlet 12. In this way, by the air conditioning indoor unit 100 provided by the embodiment, the indoor air exchanges heat via the air duct 14 and mixes the indoor air which is not exchanged with the indoor air to supply air together, so that the temperature difference between the air supply temperature of the air conditioning indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, and the fan assembly 301 can be utilized to fully mix the heat exchange air flow and the non-heat exchange air flow, so that the air supply temperature of the air conditioning indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

On the basis of the above embodiment, referring to fig. 4 and 5 in combination, the casing 10 is movably provided with a first cover plate 51 and a second cover plate 52, the first cover plate 51 is openably and closably arranged at the first air port 11, and the second cover plate 52 is openably and closably arranged at the second air port 12. In the present embodiment, the opening and closing of the first air port 11 and the second air port 12 can be achieved by controlling the movement of the first cover plate 51 and the second cover plate 52, the mixing air volume, the heat exchange air volume, and the total air volume can be controlled by controlling the opening of the first cover plate 51 or the second cover plate 52 at the air port serving as the air intake passage, and the air supply direction of the air conditioning indoor unit 100 can be controlled by controlling the opening of the first cover plate 51 or the second cover plate 52 at the air port serving as the air outlet passage.

Specifically, taking the first air port 11 as an air mixing inlet channel, the second air port 12 is taken as an air outlet channel as an example. When the indoor unit 100 is in operation, the fan assembly 301 drives the mixed air entering from the first air inlet 11 and the heat exchange air entering from the air inlet section 140 to flow together to the fan assembly 301, and the mixed air is fully stirred and mixed by the fan assembly 301 and then is sent out from the second air inlet 12. At this time, the air volume of the air conditioner indoor unit 100 may be controlled by controlling the opening degree of the first cover plate 51. Taking the second air port 12 as an air mixing inlet channel, the first air port 11 is taken as an air outlet channel as an example. When the indoor unit 100 is in operation, the fan assembly 301 drives the mixed air entering from the second air inlet 12 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and the mixed air is fully stirred and mixed by the fan assembly 301 and then is sent out from the first air inlet 11. At this time, the air volume of the air conditioner indoor unit 100 may be controlled by controlling the opening degree of the second cover plate 52. The relationship between the opening of the first cover plate 51 or the second cover plate 52 and the mixed air volume, the heat exchange air volume and the total air volume is shown in table 1. In the table, the mixed air volume refers to the air intake volume of the first air port 11 and the second air port 12 serving as the air intake passage, the heat exchange air volume refers to the air intake volume of the air intake 13, and the total air volume refers to the sum of the air volumes of the first air port and the second air port.

TABLE 1 relation between opening of the first cover plate 51 or the second cover plate 52 and mixed air volume, heat exchange air volume and total air volume

As can be seen from table 1, in the first case, the opening degree of the second cover plate 52 is unchanged, and when the opening degree of the first cover plate 51 is increased, the mixed air volume of the mixed air is increased, the heat exchange air volume of the heat exchange air is slightly decreased, and the total air volume of the air-conditioning indoor unit 100 is increased. In the second case, the opening of the first cover plate 51 is unchanged, and when the opening of the second cover plate 52 is increased, the mixed air volume of the mixed air is increased, the heat exchange air volume of the heat exchange air is slightly reduced, and the total air volume of the air-conditioning indoor unit 100 is increased.

Further, referring to fig. 4, 5 and 7 in combination, the housing 10 has a mounting side 60 and a front side forward of the mounting side 60 as shown. The installation side 60 of the casing 10 is generally used to connect and fix to a building structure, and the front side located in front of the installation side 60 generally refers to a side of the air conditioning indoor unit 100 facing away from the wall for installation in the horizontal direction, that is, a side of the air conditioning indoor unit 100 facing the indoor space. In this embodiment, as shown in the drawing, the first air port 11 and the second air port 12 are disposed at intervals in the vertical direction, the first air port 11 is opened upward forward, and the second air port 12 is opened downward. In this way, in the cooling mode, the air conditioning indoor unit 100 uses the first air port 11 as an air outlet channel, the low-temperature air flow sent out by the air duct 14 may be sent out forward and upward from the first air port 11, then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. In the heating mode, the air conditioning indoor unit 100 uses the second air port 12 as an air outlet channel, and the high-temperature air flow sent out by the air duct 14 can be sent out downwards from the second air port 12, so that the hot air rises and cannot float above the room, the heating layering phenomenon is avoided, the indoor temperature distribution is uniform, and the human body feel comfortable.

Further, referring to fig. 7, in an embodiment, the first cover plate 51 is rotatably installed on the upper edge of the first tuyere 11, and the opening D of the first cover plate 51 is greater than or equal to 0 degrees and less than or equal to 50 degrees. In another embodiment, the second cover 52 is rotatably mounted on the rear edge of the second tuyere 12, and the opening E of the second cover 52 is greater than or equal to 0 degrees and less than or equal to 90 degrees. Thus, the first cover plate 51 and the second cover plate 52 are arranged on

The above two embodiments may be combined and implemented, so that the air supply directions of the first air port 11 and the second air port 12 may be reasonably adjusted by the first cover plate 51 and the second cover plate 52, so as to guide the flow of the cooling air to be sent out substantially forward at the upper part and the flow of the heating air to be sent out substantially downward at the lower part.

In the conventional indoor unit 100' for air conditioner, referring to fig. 11 and 12, only one air outlet is provided, taking the indoor unit 100' for wall-mounted air conditioner as an example, the indoor unit 100' for air conditioner is provided with an air inlet 11' and an air outlet 12', and a heat exchange air duct communicating the air inlet 11' and the air outlet 12', and a heat exchanger 20' and a cross-flow wind wheel 30' are provided in the heat exchange air duct. Whether in a cooling mode or a heating mode, indoor air flows in from an air inlet 11 'at the upper side of the indoor unit 100' of the air conditioner and flows in from an air outlet 12 'at the lower side, the air outlet direction is regulated only through an air deflector 10' arranged at the air outlet, the regulation effect on the air supply direction is limited, the air supply distance is not far, the indoor air circulation range is small, the indoor temperature distribution is uneven, and the human body feel uncomfortable.

In order to solve the above-mentioned problems, referring to fig. 2 to 5, in the present embodiment, the first tuyere 11 and the second tuyere 12 are disposed at intervals in the up-down direction. In this way, in the cooling mode, the air conditioning indoor unit 100 uses the first air port 11 as an air outlet channel, the low-temperature air flow sent out by the air duct 14 can be sent out from the first air port 11, then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. In the heating mode, the air conditioning indoor unit 100 uses the second air port 12 as an air outlet channel, and the high-temperature air flow sent out by the air duct 14 can be sent out from the second air port 12, so that the hot air rises and cannot float above the room, the heating layering phenomenon is avoided, the indoor temperature distribution is uniform, and the human body feel comfortable. With continued reference to fig. 2-5, the fan assembly 301 includes a bi-directional wind wheel configured to rotate forward or backward, such that when the bi-directional wind wheel rotates forward, a driving airflow flows from the second wind port 12 and the wind inlet 13 into the wind tunnel 14 and is sent out from the first wind port 11, and when the bi-directional wind wheel rotates backward, a driving airflow flows from the first wind port 11 and the wind inlet 13 into the wind tunnel 14 and is sent out from the second wind port 12.

In this embodiment, the direction of rotation of the bidirectional wind wheel around the rotating shaft 31 towards one side is positive, the direction of rotation of the bidirectional wind wheel around the rotating shaft 31 towards the other side is negative, and by adjusting the rotation direction of the bidirectional wind wheel, the positions of the air inlet side and the air outlet side of the bidirectional wind wheel can be exchanged, so that when the bidirectional wind wheel rotates positively, the first air port 11 is on the air outlet side of the bidirectional wind wheel, the second air port 12 and the air inlet 13 are on the air inlet side of the bidirectional wind wheel, and when the air conditioner is in a refrigerating mode, the bidirectional wind wheel is controlled to rotate positively, so that low-temperature air flows out from the first air port 11 above, then cold air sinks, the cold air does not blow a human body directly, the indoor temperature distribution is uniform, and the human body feels comfortable. When the bidirectional wind wheel reverses, the second wind opening 12 is at the wind outlet side of the bidirectional wind wheel, the first wind opening 11 and the wind inlet 13 are at the wind inlet side of the bidirectional wind wheel, and when the air conditioner is in a heating mode, the bidirectional wind wheel is controlled to reverse, so that high-temperature air flow is sent out from the second wind opening 12 positioned below, then hot air rises, the air cannot float above the room, the indoor temperature distribution of the heating layering phenomenon is avoided, and the human body feel comfortable.

By controlling the opening and closing of the first cover plate 51 and/or the second cover plate 52, whether to mix air or not and the adjustment of the air mixing gear during air mixing in the cooling or heating mode can be realized. Specifically, referring to fig. 2 and 4, if only cooling is performed and no air mixing is performed, the bidirectional wind wheel may be controlled to rotate forward, the first cover plate 51 is opened, the second cover plate 52 is closed, and the opening degree of the first cover plate 51 may be adjusted to adjust the air supply direction of the first air port 11. If the air is mixed at the same time in the cooling mode, the second cover plate 52 is further opened, so that a part of indoor air flow does not pass through the heat exchanger 50, and is mixed with the heat exchange air flow uniformly at the fan assembly 301, and then the air can be sent out from the first air port 11, and the opening degree of the second cover plate 52 can be adjusted, so that the air mixing volume of the air conditioner is also adjusted.

With continued reference to fig. 3 and 5, if only heating is performed and no air mixing is performed, the bidirectional wind wheel may be controlled to rotate reversely, the second cover plate 52 may be opened, the first cover plate 51 may be closed, and the opening degree of the second cover plate 52 may be adjusted to adjust the air supply direction of the second air port 12. If the air is mixed at the same time in the heating mode, the first cover plate 51 is further required to be opened, so that a part of indoor air flow is not mixed uniformly with the heat exchange air flow at the fan assembly 301 without passing through the heat exchanger 50, and then the air can be sent out from the second air port 12, the opening degree of the first cover plate 51 can be adjusted, and the air mixing quantity of the air conditioner is also adjusted. In this embodiment, the user or the control system inside the air conditioner may adjust according to the actual requirements, select different air outlet air outlets in different heat exchange modes, adjust the air outlet direction, select whether to mix air, and select a suitable air mixing amount, so that the air conditioner indoor unit 100 has multiple air outlet modes to perform selective adjustment, and improve the user experience.

In this embodiment, the specific model of the bidirectional wind wheel is not limited, as long as it can drive the airflow from different directions under the forward rotation and the reverse rotation. For example, an axial flow wind wheel or a cross flow wind wheel 30 is possible. When the bi-directional wind wheel is a cross-flow wind wheel 30, the blades of the cross-flow wind wheel 30 need to be specially designed, specifically referring to fig. 8 to 10, in an embodiment, the cross-flow wind wheel 30 has first blades 32 and second blades 33 that are alternately distributed in the axial direction, and the first blades 32 and the second blades 33 have different blade shapes, so that when the cross-flow wind wheel 30 rotates forward, the cross-flow wind wheel 30 drives the airflow to be sent out from the radial direction of the first blades 32, and when the cross-flow wind wheel 30 rotates backward, the cross-flow wind wheel 30 drives the airflow to be sent out from the radial direction of the second blades 33. Referring to fig. 9 and 10 for the specific profiles of the first blade segment 32 and the second blade segment 33, it can be seen that the profile of the first blade segment 32 has the same rotation direction as the forward rotation direction, and the profile of the second blade segment 33 has the same rotation direction as the reverse rotation direction. Thus, through the cross flow wind wheel 30 provided in this embodiment, different air supply directions of the bidirectional wind wheel in forward rotation and reverse rotation states can be realized. It can be appreciated that other embodiments of the specific structure of the cross-flow wind wheel 30 may be provided, for example, the cross-flow wind wheel 30 is provided with a movable fan blade and a fan blade driving device for driving the fan blade to move, the position of the fan blade may be adjusted according to the rotation direction of the cross-flow wind wheel 30, and the fan blade driving device is specifically utilized to adaptively drive and adjust the fan blade, so that the fan blade moves to a position with the same rotation direction as the current rotation direction. Thus, through the cross flow wind wheel 30 provided in this embodiment, different air supply directions of the bidirectional wind wheel in forward rotation and reverse rotation states can be realized.

It can be understood that the influence on the air supply direction is limited only by adjusting the rotation direction of the bidirectional wind wheel, and if the internal structure of the air duct 14 is not adjusted adaptively, the air resistance of the air flow in the air duct 14 is large, the air supply quantity is affected, and large noise is generated. To this end, referring to fig. 1 to 5, the air duct 14 further includes a first air duct section 141 adjacent to the first air port 11, and a second air duct section 142 adjacent to the second air port 12, and it is understood that the first air duct section 141 is disposed adjacent to a side of the first air port 11 adjacent to the bi-directional wind wheel, and the second air duct section 142 is disposed adjacent to a side of the second air port 12 adjacent to the bi-directional wind wheel. The indoor unit 100 further includes an air duct switching plate 20, where the air duct switching plate 20 forms part of the air duct wall of the air duct 14, that is, the air duct switching plate 20 forms at least part of the air duct wall of the air duct 14 except the first air duct section 141, the second air duct section 142, and the air intake section 140.

The air duct switching plate 20 is movably disposed on the casing 10, so as to have a first working position and a second working position, please refer to fig. 2 to 5, in which the air inlet port of the first air duct section 141 is gradually increased in the moving stroke of the air duct switching plate 20 from the first position to the second position, and the air inlet port of the second air duct section 142 is gradually increased in the moving stroke of the air duct switching plate 20 from the second position to the first position. In this way, the air conditioner indoor unit 100 is switched to the first working position by the air duct switching plate 20 in the cooling mode, so that the air inlet 13 is communicated with the first air inlet 11 to form an upper air outlet duct, the air outlet air is guided to flow to the first air inlet 11 to be sent out, and in the heating mode, the air duct switching plate 20 is switched to the second working position, so that the air inlet 13 is communicated with the second air inlet 12 to form a lower air outlet duct, the air outlet air is guided to flow to the second air inlet 12 to be sent out, the internal form of the air duct 14 is matched with the actual air outlet position of the air conditioner indoor unit 100, the air loss is reduced, the air quantity is increased, and the heat exchange efficiency is improved. It will be appreciated that, in the cooling mode, the air duct switching plate 20 does not completely close the air outlet port of the second air duct section 142, so that when the second cover plate 52 is opened, air mixing can be performed, and the air inlet port of the first air duct section 141 is larger than the air outlet port of the second air duct section 142. Similarly, the air duct switching plate 20 does not completely close the air inlet port of the first air duct section 141 in the heating mode, so that the air mixing can be performed when the first cover plate 51 is opened, and the air inlet port of the second air duct section 142 is larger than the air outlet port of the first air duct section 141.

In this embodiment, the bi-directional wind wheel is a cross-flow wind wheel 30, referring to fig. 1 to 5, and the heat exchanger 50 is disposed in an arc-shaped plate bent toward the air inlet 13. Thus, the heat exchange area of the heat exchanger 50 is increased, and the heat exchange efficiency is improved.

In an embodiment, as shown in fig. 1 to 5, the bidirectional wind wheel is a through-flow wind wheel 30, the air inlet 13 is located between the first air inlet 11 and the second air inlet 12 in the up-down direction, and the air duct switching plate 20 is disposed on a side of the through-flow wind wheel 30 facing away from the air inlet 13 and is in an arc-shaped plate shape that is curved towards a direction away from the through-flow wind wheel 30. In this embodiment, the air duct switching plate 20 is curved to conform to the shape of the conventional through-flow air duct 14, and the air duct switching plate 20 cooperates with the air duct walls of the air inlet section 140 and the first air duct section 141 or the second air duct section 142 to form the through-flow air duct 14 with a shape suitable for the through-flow wind wheel 30, so as to guide the air flow to flow from the air inlet 13 to the first air inlet 11 or the second air inlet 12 serving as the air outlet channel, reduce the wind resistance, and increase the air supply.

Further, referring to fig. 1 and 6 in combination, the dashed line illustrates the configuration of the air duct switching plate 20 in the first working position, and the solid line illustrates the configuration of the air duct switching plate 20 in the second working position. It can be seen that the air duct switching plate 20 is rotatably mounted on the casing 10, and the rotating shaft 21 of the air duct switching plate 20 and the rotating shaft 31 of the cross-flow wind wheel 30 are arranged side by side, the air duct switching plate 20 has a first rotating end 22 and a second rotating end 23 which are oppositely arranged at two sides of the rotating shaft 21, the first rotating end 22 is close to the first air duct section 141, and the second rotating end 23 is close to the second air duct section 142.

Referring to fig. 2, in the cooling mode, the air duct switching plate 20 is switched to the first working position, the first rotating end 22 is far away from the through-flow wind wheel 30, and the second rotating end 23 is near the through-flow wind wheel 30 so as to communicate the air inlet section 140 and the first air duct section 141 to form an upper air outlet air duct. Thus, when the cross-flow wind wheel 30 works, the indoor air flows through the air inlet 13, exchanges heat through the heat exchanger 50, cools down, flows to the first air duct section 141, and is sent out from the first air inlet 11 located above. The low-temperature gas sinks, cold air cannot be directly blown to a human body, indoor temperature is uniformly distributed, and the human body feels comfortable. Referring to fig. 4, if the second air port 12 is opened, the other part of the air flow does not pass through the heat exchanger 50, and is fully and uniformly stirred with the heat exchanged air flow at the through-flow wind wheel 30, and then flows to the first air channel section 141, and is sent out from the first air port 11 located above. Compared with a non-mixed air cooling mode, in the mixed air mode, the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, indoor air circulation is quickened, the cooling temperature drop time is shortened, the comfort of a human body is improved, and the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the cross flow wind wheel 30, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, temperature layering is avoided, and the comfort of the human body is further improved.

Referring to fig. 3, in the heating mode, the air duct switching plate 20 is switched to the second working position, the second rotating end 23 is far away from the through-flow wind wheel 30, and the first rotating end 22 is near the through-flow wind wheel 30 to communicate the air inlet section 140 and the second air duct section 142, so as to form a lower air outlet air duct. Thus, when the cross-flow wind wheel 30 works, the indoor air flows through the air inlet 13, exchanges heat through the heat exchanger 50, heats up, flows to the second air duct section 142, and is sent out from the second air inlet 12 located below. The high-temperature air rises, the heating layering phenomenon is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable. Referring to fig. 5, if the first air port 11 is opened, another portion of the air flow does not pass through the heat exchanger 50, and after being fully and uniformly stirred with the heat exchanged air flow at the through-flow wind wheel 30, the air flow flows to the second air channel segment 142, and is sent out from the second air port 12 located below. Compared with a non-mixed air refrigerating mode, in the mixed air mode, the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, indoor air circulation is quickened, the time of heating and temperature rise is shortened, the comfort of a human body is improved, and the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the cross flow wind wheel 30, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, temperature layering is avoided, and the comfort of the human body is further improved.

In this embodiment, the air duct switching plate 20 is switched between the first working position and the second working position by a seesaw type rotation action, the moving path is simple, the stroke is small, the structure is simple and reliable, the production and the assembly are easy, and the production cost is low.

In an embodiment, referring to fig. 7, in the axial direction of the through-flow wind wheel 30, an included angle C between a connecting line between the rotating shaft 21 and the rotating shaft 31 and the vertical direction is greater than or equal to 30 degrees and less than or equal to 60 degrees. The position relationship between the air duct switching plate 20 and the cross-flow wind wheel 30 is determined in this way, and the air inlet 13 and the air duct switching plate 20 are disposed opposite to each other on both sides of the cross-flow wind wheel 30, so that the air inlet 13 is located at a position substantially in front of the casing 10, and the air duct switching plate 20 is located at a position substantially in front of the cross-flow wind wheel 30, so that the structural arrangement is reasonable, and the air duct switching plate 20 has enough space activity, and is suitable for the appearance requirement of the general wall-mounted air conditioner indoor unit 100.

In another embodiment, referring to fig. 7, the radius of the cross-flow wind wheel 30 is R, and the minimum distance S between the rotating shaft 21 and the rotating shaft 31 is greater than or equal to 1.2R and less than or equal to 1.6R. In this embodiment, too small a distance R between the rotating shaft 21 of the air duct switching plate 20 and the rotating shaft 31 will cause too small a rotating stroke of the air duct switching plate 20 to be able to switch between the first working position and the second working position well, so as to realize that an upper air outlet duct or a lower air outlet duct is formed, and if too large a distance R between the rotating shaft 21 of the air duct switching plate 20 and the rotating shaft 31 will cause too large a distance between the air duct switching plate 20 and the cross flow wind wheel 30, so as to not play a good air guiding role, and also possibly cause too large wind resistance and enhanced noise. For this reason, in the present embodiment, the minimum distance S between the rotating shaft 21 and the rotating shaft 31 is greater than or equal to 1.2R and less than or equal to 1.6R, so that the distance between the air duct switching plate 20 and the cross-flow wind wheel 30 is equal to or less than 1.2R, which not only ensures that the air duct switching plate 20 has a sufficient guiding function, but also ensures that the movable travel of the air duct 14 plate between the first working position and the second working position is not interfered by the cross-flow wind wheel 30.

It will be appreciated that the two embodiments described above may be implemented separately or in combination.

On the basis of the above embodiment, as shown in fig. 2 to 5 and 7, the air duct wall of the air intake section 140 includes a first volute tongue 103 and a second volute tongue 104, the first volute tongue 103 and the second volute tongue 104 are disposed at intervals in the vertical direction, the first volute tongue 103 extends from above the air intake 13 to the cross wind wheel 30, and the second volute tongue 104 extends from below the air intake 13 to the cross wind wheel 30. In this embodiment, the first volute tongue 103 may also form part of the air channel wall of the first air channel segment 141, and the second volute tongue 104 may also form part of the air channel wall of the second air channel segment 142. The air inlet section 140 is formed between the first volute tongue 103 and the second volute tongue 104, so that enough space is provided in the air inlet section 140 to accommodate the heat exchanger 50, preferably, the upper and lower ends of the heat exchanger 50 can be respectively fixed on the first volute tongue 103 and the second volute tongue 104, and are arranged in a curved plate shape which is curved forward, so that the casing 10 is shaped like a curved forward, and the structure is compact, and the appearance is attractive and reasonable. Preferably, a water receiving tray extending forward is disposed at the lower end of the second volute tongue 104, and the water receiving tray is correspondingly located below the arc-shaped heat exchanger 50 for receiving water.

Based on the above embodiment, it can be understood that the distances between the first volute tongue 103 and the second volute tongue 104 and the cross-flow wind wheel 30 determine the ventilation area of the air intake section 140. If the distance between the first volute tongue 103 or the second volute tongue 104 and the through-flow wind wheel 30 is too small, the ventilation area of the air intake section 140 is too small, and the wind resistance is increased, and if the distance between the first volute tongue 103 or the second volute tongue 104 and the through-flow wind wheel 30 is too large, the flow guiding effect of the first volute tongue 103 and the second volute tongue 104 is insufficient. For this reason, referring to fig. 7, the minimum space S1 between the first volute tongue 103 and the rotating shaft 31 is greater than or equal to 1.1R and less than or equal to 1.3R according to the general configuration design of the through-flow air duct 14. And/or, the minimum space S2 between the second volute tongue 104 and the rotating shaft 31 is greater than or equal to 1.1R and less than or equal to 1.3R. In this way, the distance between the cross-flow wind wheel 30 and the first volute tongue 103 and the second volute tongue 104 is reasonable, so that the air can be well guided, and the air inlet of the air duct 14 can be ensured.

In another embodiment, referring to fig. 7, in the axial direction of the through-flow wind wheel 30, an included angle a between a connecting line between the closest point of the first volute tongue 103 and the through-flow wind wheel 30 and the rotating shaft 31 and the vertical direction is greater than or equal to 0 degrees and less than or equal to 50 degrees. The included angle a between the connection line between the closest point of the first volute tongue 103 and the through-flow wind wheel 30 and the rotating shaft 31 and the vertical direction determines the approximate position of the first volute tongue 103, in this embodiment, the first volute tongue 103 is approximately located at the position near the middle of the front side of the casing 10, that is, enough space is reserved for the first air inlet 11, and the size of the air inlet 13 can be ensured as much as possible. And/or, referring to fig. 7, an air inlet angle B of the through-flow wind wheel 30 formed between the first volute tongue 103 and the second volute tongue 104 is greater than or equal to 150 degrees and less than or equal to 180 degrees. In this embodiment, the air inlet angle of the through-flow wind wheel 30 formed between the first volute tongue 103 and the second volute tongue 104 refers to an included angle B formed between the first volute tongue 103 and the connection line between the closest point of the through-flow wind wheel 30 and the rotating shaft 31, and between the second volute tongue 104 and the connection line between the closest point of the through-flow wind wheel 30 and the rotating shaft 31, so that the approximate position of the second volute tongue 104 is determined, and in this embodiment, the second volute tongue 104 is approximately located at the lower position of the front side of the casing 10, that is, enough space is reserved for the second air inlet 12, and the size of the air inlet 13 can be ensured as much as possible.

It is understood that the two embodiments described above may also be implemented separately or in combination with the previous embodiments.

The distance between the air duct wall and the wind wheel of the existing air conditioner is usually a fixed value, only parameters under rated working conditions are usually considered when the heat exchange air duct is initially designed, and the distance between the air duct wall and the wind wheel of the existing air conditioner is usually designed according to the optimal gap with small corresponding working noise when the air conditioner operates in a high-wind gear. However, when the air conditioner is actually used, the time ratio of running in a high-wind gear is not large, so that when the air conditioner runs in other wind-out gears, the corresponding working noise is large. It is known in the art that the spacing between the duct wall and the wind wheel affects the amount of operating noise of the air conditioner.

In order to solve the above-mentioned technical problems, the rotation angle of the wind path switching board 20 in the present embodiment can be adjusted in a small range when the wind path switching board is in the first working position or the second working position. In this embodiment, the air duct switching plate 20 is disposed on the circumferential side of the wind wheel and is disposed to be movable relative to the cross-flow wind wheel 30 in the radial direction of the cross-flow wind wheel 30, so that the distance t between the air duct switching plate 20 and the cross-flow wind wheel 30 in the radial direction varies with the movement of the air duct switching plate. When the indoor unit 100 works under different working conditions, the air duct switching plate 20 can move to a matching position with the through-flow wind wheel 30 at a reasonable distance, so that the working noise value of the indoor unit 100 is relatively smaller. The air conditioning indoor unit 100 provided in this embodiment can more accurately adjust the working noise of the air conditioning indoor unit 100 through the activity control of the air duct switching plate 20, so that the noise values are relatively smaller and the user experience is more comfortable when the air conditioning indoor unit 100 works under different working conditions.

The matching position of the duct switching plate 20 in this embodiment is related to the outlet gear of the air conditioner. Meanwhile, since the air duct 14 has different air duct resistances in the cooling mode and the heating mode, the resistance of the air duct 14 is increased mainly due to the condensed water generated by the heat exchanger 50 in the cooling mode. The matching positions of the corresponding air duct switching plates 20 are also different in the same air outlet gear between the cooling mode and the heating mode. In this embodiment, the printed relationship between the matching position of the air duct switching plate 20 and the different air outlet gears of the air conditioner in the cooling mode and the heating mode is shown in table 1 and table 2:

TABLE 1 printed relation between matching position and air outlet gear in air conditioner cooling mode

TABLE 2 printing relationship between the matching position and the air outlet gear in the cooling and heating mode of the air conditioner

Referring to fig. 5 and fig. 6 in combination, it should be noted that when the matching angle F is 0, the included angle between the tangent line of the air duct switching plate 20 at the rotation axis 21 and the connection line between the rotation axis 21 and the rotation axis 31 is 108 degrees. The other matching angles F are all relative values to the matching angle 0, wherein the positive matching angle F represents the clockwise rotation angle of the air duct switching plate 20 on the basis of 0 degrees, and the negative matching angle F represents the counterclockwise rotation angle of the air duct switching plate 20 on the basis of 0 degrees.

As can be seen from tables 1 and 2, the distance t and/or the matching angle F feed back the matching position of the air duct switching plate 20, and the air duct switching plate 20 has different air volumes at different air outlet gears and corresponds to different matching positions. The noise value of the air duct switching plate 20 at the matching position corresponding to a certain air outlet gear represents the minimum noise value of the air duct switching plate 20 when the air duct switching plate 20 moves to the matching position. And the refrigerating mode and the heating mode have different distances t to reach the minimum noise value under different gear air volumes. The air quantity of the air conditioner can be improved by about 5% -15% under the same noise by adjusting the air duct switching plate 20 according to the printing relation shown in the above tables 1 and 2, and the lower the air outlet gear is, the more obvious the lifting effect is.

In one embodiment, referring to fig. 2 to 5 and 7, the housing 10 has a mounting side 60 for mounting the indoor unit 100, and a front side located in front of the mounting side 60, and the air inlet 13 is disposed on the front side of the housing 10. The front side of the casing 10 is provided with a panel 40 extending in the vertical direction, the panel 40 is openably and closably arranged at the air inlet 13, and the panel 40 has a first open position in which the upper end of the panel 40 is rotatably connected with the casing 10 and the lower end of the panel 40 is separated from the casing 10 in an open state. The panel 40 is in the first open position, such that a lower air inlet channel with an open lower end is formed between the panel 40 and the air inlet 13, so that air flows from the gap between the panel 40 and the lower side of the casing 10, from bottom to top, toward the air inlet 13, and toward the air inlet section 140. The actual air inlet position is far away from the first air inlet 11, and the air inlet direction is downward, so that the phenomenon of air flow short circuit caused by direct flow of low-temperature air flowing out of the first air inlet 11 to the air inlet 13 is avoided. The panel 40 is in the second open position, so that an upper air inlet channel with an open upper end is formed between the panel 40 and the air inlet 13, and air flows from the gap between the panel 40 and the upper side of the casing 10, from top to bottom, toward the air inlet 13, and toward the air inlet section 140. The actual air inlet position is far away from the second air inlet 12, and the air inlet direction is upward, so that the phenomenon of air flow short circuit caused by the direct flow of high-temperature air flowing out of the second air inlet 12 to the air inlet 13 is avoided. And a second opening position in which the lower end of the panel 40 is rotatably connected to the casing 10 and the upper end of the panel 40 is separated from the casing 10.

In this embodiment, the air conditioning indoor unit 100 is in a cooling mode, the bidirectional wind wheel rotates forward, the air duct switching plate 20 is switched to the first working position to form an upper air outlet duct, and the panel 40 is switched to the first opening position. At this time, the indoor air flows from the lower side of the casing 10 along the gap formed between the casing 10 and the panel 40, flows from the lower side to the air inlet section 140, exchanges heat with the heat exchanger 50 in the air inlet section 140, cools down, and then is sent out from the first air port 11 through the upper air outlet duct. The first air port 11 is located above, and the extending direction of the upper air outlet duct is upward forward, so that the low-temperature air is sent to the room in the forward direction, and is sunk in the room, cold air is not directly blown to the human body, the indoor air temperature is uniformly distributed, and the human body feels comfortable. The indoor air flow has the advantages of lower air inlet and upper air outlet, large circulation range, the indoor air is circulated well and the temperature distribution is uniform.

In the heating mode of the indoor unit 100, the bi-directional wind wheel is reversed, the wind channel switching plate 20 is switched to the second working position to form a lower wind outlet channel, and the panel 40 is switched to the second opening position. At this time, the indoor air flows from the upper side of the casing 10 along the gap formed between the casing 10 and the panel 40, flows from top to bottom to the air inlet section 140, exchanges heat through the heat exchanger 50 in the air inlet section 140, heats up, and is sent out from the second air port 12 through the lower air outlet duct. The second air port 12 is located above, and the extending direction of the lower air outlet duct is downward, so that the high-temperature air is sent to the room in the downward direction, and rises in the room, the hot air is not directly blown to the human body, the layering phenomenon of heating is avoided, the indoor air temperature distribution is uniform, and the human body feels comfortable. The indoor air flows into the upper side and flows out from the lower side, the circulation range is wide, the indoor air circulation is good, and the temperature distribution is uniform.

In this embodiment, the air outlet gear of the indoor unit 100 of the air conditioner may be adjusted by adjusting the opening of the panel 40, it may be understood that the larger the opening of the panel 40, the larger the air inlet volume at the air inlet 13, so that the larger the actual heat exchange air volume of the indoor unit 100 of the air conditioner is, and the larger the noise generated by the indoor unit 100 of the air conditioner is, generally, when the indoor unit 100 of the air conditioner is just turned on, the panel 40 needs to be turned on to the maximum opening in order to achieve rapid cooling or heating, and when the indoor temperature reaches or approaches to the preset target temperature value, the opening of the panel may be reduced appropriately to reduce the noise, and according to maintaining the indoor temperature constant, energy saving, indoor noise control and other factors, a suitable panel opening is selected. Referring to fig. 7, the opening degree 4b of the upper end of the panel 40 indicates the opening angle of the panel 40 when the upper end of the panel 40 is rotatably connected to the casing 10 in the cooling mode. The opening degree of the lower end of the panel 40 indicates the opening angle of the panel 40 in the case that the lower end of the panel 40 is rotatably connected to the cabinet 10 in the heating mode.

Table 2 shows the relationship between the opening degree of the panel 40 and the air volume and noise. In table 2, the air volume refers to the heat exchange air volume of the air conditioning indoor unit 100, and the noise indicates the noise decibel value generated by the air conditioning indoor unit 100 corresponding to the opening of the panel 40.

TABLE 2 relationship between opening of Panel 40 and air volume and noise

Based on the above specific embodiments of the indoor unit 100, embodiments of a control device, a method, and a storage medium for the indoor unit 100 are provided.

Referring to fig. 13, fig. 13 is a schematic diagram of an apparatus structure of a hardware running environment according to an embodiment of the present invention.

As shown in fig. 13, the apparatus may include a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display screen Display, an input unit such as keys, and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface such as a WI-FI interface. The memory 1005 may be a high-speed RAM memory or a stable memory non-volatile memory, such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.

It will be appreciated by those skilled in the art that the control device structure of the air conditioning indoor unit 100 shown in fig. 13 does not constitute a limitation of the control device of the air conditioning indoor unit 100, and may include more or less components than those illustrated, or may combine certain components, or may have a different arrangement of components.

As shown in fig. 13, the memory 1005, which is one type of storage medium, may include an operating system, a network communication module, a user interface module, and a control method program of the air conditioning indoor unit 100.

In the control device of the indoor unit 100 shown in fig. 13, the network interface 1004 is mainly used for connecting a server and performing data communication with the server, the user interface 1003 is mainly used for connecting a user terminal and performing data communication with the terminal, and the control device of the indoor unit 100 of the present invention calls the control method program of the indoor unit 100 stored in the memory 1005 through the processor 1001 and executes the control method of the indoor unit 100 of the present invention.

Based on the above hardware configuration, an embodiment of the control method of the air conditioning indoor unit 100 of the present invention is presented.

Referring to fig. 14, fig. 14 is a flowchart illustrating a control method of an indoor unit 100 of an air conditioner according to a first embodiment of the present invention. The control method of the indoor unit 100 comprises the following steps:

Step S1, acquiring a working mode of the indoor unit 100.

The execution body of the present embodiment may be a control device of the air conditioning indoor unit 100, the control device of the air conditioning indoor unit 100 may be provided with a control method program of the air conditioning indoor unit 100, and may be other devices capable of realizing the same or similar functions, which is not limited in this embodiment, an air conditioner is taken as an example, a controller may be provided in the air conditioner, a control application program of the air conditioning indoor unit 100 is provided on the controller, and the control of the air conditioning indoor unit 100 may be performed according to the control application program of the air conditioning indoor unit 100.

In a specific implementation, the working mode includes a heat exchange mode and/or an air supply mode, where the heat exchange mode and/or the air supply mode can be set by a user, or preset conditions in the execution main body by a manufacturer, so that the execution main body can automatically determine according to multiple factors such as current ambient temperature, humidity, time and the like.

Specifically, the heat exchange mode includes a cooling mode in which the heat exchanger 50 functions as an evaporator or a heating mode in which the heat exchanger 50 functions as a condenser, and the arrangement positions of the first tuyere 11 and the second tuyere 12 are combined. In a specific implementation, when the first air port 11 is disposed above the second air port 12, the air flow is preferably sent out from the first air port 11 above in the cooling mode, and the air flow is preferably sent out from the second air port 12 below in the heating mode. In this way, in the cooling mode, the air conditioning indoor unit 100 uses the first air port 11 as an air outlet channel, the low-temperature air flow sent out by the air duct 14 may be sent out forward and upward from the first air port 11, then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. In the heating mode, the air conditioning indoor unit 100 uses the second air port 12 as an air outlet channel, and the high-temperature air flow sent out by the air duct 14 can be sent out downwards from the second air port 12, so that the hot air rises and cannot float above the room, the heating layering phenomenon is avoided, the indoor temperature distribution is uniform, and the human body feel comfortable.

The air supply mode includes a non-air mixing mode and an air mixing mode. In the non-air mixing mode, the air flow only flows into the air duct 14 from the air inlet 13, and is sent to the room from the first air inlet 11 or the second air inlet 12 after heat exchange. In the air mixing mode, the air flow in the air duct 14 has different flow directions in the cooling mode and the heating mode. Specifically, in the cooling mode, the fan assembly 301 drives the mixed air entering from the second air inlet 12 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and the mixed air is fully stirred and mixed by the fan assembly 301 and then is sent out from the first air inlet 11. In the heating mode, the fan assembly 301 drives the mixed air entering from the first air inlet 11 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and the mixed air is fully stirred and mixed by the fan assembly 301 and then is sent out from the second air inlet 12. So, make the indoor air through wind channel 14 heat transfer and mix the indoor not heat transfer air current together supply air, can enough reduce the air conditioner indoor set 100 air supply temperature and the difference in temperature of room temperature for indoor air circulation, reduce heating temperature rise or refrigeration temperature fall time, promote human travelling comfort, can utilize again fan subassembly 301 with heat transfer air current and not heat transfer air current intensive mixing for air conditioner indoor set 100 air supply temperature is even, avoids the temperature layering, further promotes human travelling comfort.

Step S2, controlling the opening and closing of the first cover plate 51 and/or the second cover plate 52 according to the working mode, and controlling the fan assembly 301 to work.

In the present embodiment, the first cover 51 is openably and closably provided at the first tuyere 11, and the second cover 52 is openably and closably provided at the second tuyere 12. In the present embodiment, the opening and closing of the first air port 11 and the second air port 12 can be achieved by controlling the movement of the first cover plate 51 and the second cover plate 52, the mixing air volume, the heat exchange air volume, and the total air volume can be controlled by controlling the opening of the first cover plate 51 or the second cover plate 52 at the air port serving as the air intake passage, and the air supply direction of the air conditioning indoor unit 100 can be controlled by controlling the opening of the first cover plate 51 or the second cover plate 52 at the air port serving as the air outlet passage.

In this step, the first air port 11 and the second air port 12 can be selectively opened and closed by controlling the movement of the first cover plate 51 and the second cover plate 52 according to the heat exchange mode and the air mixing mode of the air conditioning indoor unit 100. In a specific implementation, if only cooling is performed and no air mixing is performed, that is, in the cooling non-air mixing mode, the first cover plate 51 may be controlled to be opened, the second cover plate 52 may be closed, and the opening degree of the first cover plate 51 may be adjusted to adjust the air supply direction of the first air port 11. If the air is mixed at the same time in the cooling mode, that is, in the cooling air mixing mode, the second cover plate 52 needs to be opened, so that a part of indoor air flow can be sent out through the first air port 11 after being uniformly mixed with the heat exchange air flow at the fan assembly 301 without passing through the heat exchanger 50, the opening degree of the second cover plate 52 can be adjusted, and the air mixing volume of the air conditioner is also adjusted.

If only heating is performed and air mixing is not performed, that is, the heating air mixing mode is a heating air mixing mode, the second cover plate 52 can be controlled to be opened, the first cover plate 51 is closed, and the opening degree of the second cover plate 52 can be adjusted to adjust the air supply direction of the second air port 12. If the air is mixed at the same time in the heating mode, the first cover plate 51 is further required to be opened, so that a part of indoor air flow is not mixed uniformly with the heat exchange air flow at the fan assembly 301 without passing through the heat exchanger 50, and then the air can be sent out from the second air port 12, the opening degree of the first cover plate 51 can be adjusted, and the air mixing quantity of the air conditioner is also adjusted.

In this embodiment, the user or the control system inside the air conditioner may adjust according to the actual requirements, control the opening and closing of the first cover plate 51 and/or the second cover plate 52 in different heat exchange modes, select different air outlet and air inlet, adjust the air outlet direction, and select whether to mix air, so that the air conditioner indoor unit 100 has multiple air outlet modes to perform selective adjustment, and improve the user experience.

In addition, in the cooling mode, the first air port 11 is used as an air outlet channel, the low-temperature air flow sent out by the air duct 14 can be sent out from the first air port 11 forward and upward, then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. In the heating mode, the air conditioning indoor unit 100 uses the second air port 12 as an air outlet channel, and the high-temperature air flow sent out by the air duct 14 can be sent out downwards from the second air port 12, so that the hot air rises and cannot float above the room, the heating layering phenomenon is avoided, the indoor temperature distribution is uniform, and the human body feel comfortable. The temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the fan assembly 301, the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

In an embodiment, as shown in fig. 15, a second embodiment of a control method of an indoor unit 100 of an air conditioner according to the present invention is proposed based on the first embodiment.

In a second embodiment, the step S2 includes:

Step S21, when the working mode is a wind mixing mode, controlling the first cover plate 51 and the second cover plate 52 to open, and controlling the opening of the first cover plate 51 or the second cover plate 52 according to a preset wind mixing gear. It should be noted that the number of the substrates,

In this step, the cooling air mixing mode or the heating air mixing mode may be classified into a cooling air mixing mode or a heating air mixing mode, specifically, the first cover plate 51 and the second cover plate 52 are both opened, and the fan assembly 301 is controlled to operate. Specifically, in the cooling mode, the fan assembly 301 drives the mixed air entering from the second air inlet 12 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and the mixed air is fully stirred and mixed by the fan assembly 301 and then is sent out from the first air inlet 11. At this time, the air volume of the air conditioner indoor unit 100 may be controlled by controlling the opening degree of the second cover plate 52. In the heating mode, the fan assembly 301 drives the mixed air entering from the first air inlet 11 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and the mixed air is fully stirred and mixed by the fan assembly 301 and then is sent out from the second air inlet 12. At this time, the air volume of the air conditioner indoor unit 100 may be controlled by controlling the opening degree of the first cover plate 51.

In a specific implementation, in the heating mode, when the opening of the second cover plate 52 is unchanged and when the opening of the first cover plate 51 is increased, the mixed air volume of the mixed air is increased, the heat exchange air volume of the heat exchange air is slightly reduced, and the total air volume of the air supply of the air conditioner indoor unit 100 is increased. In the cooling mode, when the opening of the first cover plate 51 is unchanged and the opening of the second cover plate 52 is increased, the mixed air volume of the mixed air is increased, the heat exchange air volume of the heat exchange air is slightly reduced, and the total air volume of the air-conditioning indoor unit 100 is increased.

In this embodiment, the user or the control system inside the air conditioner may adjust according to the actual requirements, control the opening and closing of the first cover plate 51 and/or the second cover plate 52 in different heat exchange modes, select different air outlet and air inlet, and adjust the air outlet direction, so that the air conditioner indoor unit 100 has multiple air outlet modes to perform selective adjustment, and improve the user experience. In the air mixing mode, the opening degree of the first cover plate 51 and the second cover plate 52 can be controlled, so that the air mixing quantity of the air conditioner can be adjusted according to actual requirements, the optimal heat exchange effect is achieved, the indoor air circulation is improved, the noise is controlled, and the user feels comfortable.

In an embodiment, as shown in fig. 16, a third embodiment of a control method of an indoor unit 100 of an air conditioner according to the present invention is proposed based on the second embodiment.

In a third embodiment, the step S2 includes:

Step S201, when the working mode is a cooling and air mixing mode, controlling the bidirectional wind wheel to rotate forward, and controlling the first cover plate 51 and the second cover plate 52 to open.

In this step, the heat exchanger 50 is used as an evaporator, and when the bidirectional wind wheel rotates forward, a part of indoor air flows are driven to flow into the air duct 14 through the second air opening 12 and the air inlet 13 respectively, and the air flows flowing through the air inlet 13 are subjected to heat exchange, and after the two air flows are fully stirred and mixed by the bidirectional wind wheel, the two air flows are sent out from the first air opening 11. And then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable. The temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the fan assembly 301, the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

Step S202, when the working mode is a cooling non-mixing mode, controlling the bidirectional wind wheel to rotate forward, controlling the first cover plate 51 to open, and controlling the second cover plate 52 to close.

In this step, the heat exchanger 50 serves as an evaporator, and when the bidirectional wind wheel rotates forward, the indoor air flow is driven to flow into the air duct 14 through the air inlet 13, and flows through the heat exchanger 50 to exchange heat, and is sent out from the first air inlet 11. And then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable.

Step S203, when the working mode is a heating and air mixing mode, controlling the bidirectional wind wheel to rotate reversely, and controlling the first cover plate 51 and the second cover plate 52 to open;

In this step, the heat exchanger 50 serves as a condenser, and when the bidirectional wind wheel reverses, a part of indoor air flows are driven to flow into the air duct 14 through the first air opening 11 and the air inlet 13 respectively, and the air flows flowing through the air inlet 13 undergo heat exchange, and after the two air flows are fully stirred and mixed by the bidirectional wind wheel, the two air flows are sent out from the second air opening 12. The hot air rises and cannot float above the room, so that the phenomenon of heating layering is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable. The temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the fan assembly 301, the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

In step S204, when the operation mode is the heating non-mixing mode, the bi-directional wind wheel is controlled to rotate reversely, the first cover plate 51 is controlled to be opened, and the second cover plate 52 is controlled to be closed.

In this step, the heat exchanger 50 serves as a condenser, and when the bi-directional wind wheel is reversed, the indoor air flow is driven to flow into the air duct 14 through the air inlet 13, and the air flow passes through the heat exchanger 50 to exchange heat, and is sent out from the second air inlet 12. The hot air rises and cannot float above the room, so that the phenomenon of heating layering is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable.

The steps S201, S202, S203, and S204 may be performed individually or in combination. Specifically, the air conditioning indoor unit 100 may be adjusted according to the actual heat exchange mode and the setting of the air supply mode.

In this embodiment, the user or the control system inside the air conditioner may adjust according to the actual needs, control the opening and closing of the first cover plate 51 and/or the second cover plate 52 in different heat exchange modes, and control the bidirectional wind wheel to rotate forward or backward, select different wind outlet and wind inlet, and adjust the wind outlet direction, so that the air conditioner indoor unit 100 has multiple wind outlet modes to perform selective adjustment, and improve the user experience.

In an embodiment, a fourth embodiment of the control method of the indoor unit 100 of an air conditioner according to the present invention is presented based on the first embodiment or the second embodiment.

In a fourth embodiment, the step S2 includes:

When the working mode is a cooling and air mixing mode, the bidirectional wind wheel is controlled to rotate forward, the air duct switching plate 20 is controlled to switch to the first working position, and the first cover plate 51 and the second cover plate 52 are controlled to be opened.

In this step, the heat exchanger 50 is used as an evaporator, and the air duct switching plate 20 is switched to the first working position to form an upper air outlet duct extending forward and upward. When the bidirectional wind wheel rotates positively, a part of indoor air flow is driven to flow into the air duct 14 through the second air opening 12 and the air inlet 13 respectively, the air flow flowing through the air inlet 13 exchanges heat, and the two air flows are fully stirred and mixed through the bidirectional wind wheel and then are sent out from the first air opening 11. And then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable. The temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the fan assembly 301, the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

Or the step S2 includes:

When the working mode is a refrigeration non-mixing mode, the bidirectional wind wheel is controlled to rotate positively, the air duct switching plate 20 is controlled to switch to the first working position, the first cover plate 51 is controlled to be opened, and the second cover plate 52 is controlled to be closed.

In this step, the heat exchanger 50 is used as an evaporator, and the air duct switching plate 20 is switched to the first working position to form an upper air outlet duct extending forward and upward. When the bidirectional wind wheel rotates forward, indoor air flow is driven to flow into the air duct 14 through the air inlet 13, flows through the heat exchanger 50 for heat exchange, and is sent out from the first air inlet 11. And then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable.

Or the step S2 includes:

When the working mode is a heating and air mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the air duct switching plate 20 is controlled to switch to the second working position, and the first cover plate 51 and the second cover plate 52 are controlled to be opened.

In this step, the heat exchanger 50 is used as a condenser, and the air duct switching plate 20 is switched to the second working position, so as to form a lower air outlet duct extending forward and downward. When the bidirectional wind wheel reverses, a part of indoor air flow is driven to flow into the air duct 14 through the first air opening 11 and the air inlet 13 respectively, the air flow flowing through the air inlet 13 is subjected to heat exchange, and the two air flows are fully stirred and mixed through the bidirectional wind wheel and then are sent out from the second air opening 12. The hot air rises and cannot float above the room, so that the phenomenon of heating layering is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable. The temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the fan assembly 301, the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

Or the step S2 includes:

When the working mode is a heating non-mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the air duct switching plate 20 is controlled to switch to the second working position, the first cover plate 51 is controlled to be opened, and the second cover plate 52 is controlled to be closed.

In this step, the heat exchanger 50 is used as a condenser, and the air duct switching plate 20 is switched to the second working position, so as to form a lower air outlet duct extending forward and downward. When the bidirectional wind wheel reverses, the indoor air flow is driven to flow into the air duct 14 through the air inlet 13, flows through the heat exchanger 50 for heat exchange, and is sent out from the second air inlet 12. The hot air rises and cannot float above the room, so that the phenomenon of heating layering is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable.

The four may be implemented individually or in combination. Specifically, the air conditioning indoor unit 100 may be adjusted according to the actual heat exchange mode and the setting of the air supply mode.

In this embodiment, the user or the control system inside the air conditioner may adjust according to the actual needs, control the opening and closing of the first cover plate 51 and/or the second cover plate 52 in different heat exchange modes, and control the bidirectional wind wheel to rotate forward or backward, select different wind outlet and wind inlet, and adjust the wind outlet direction, so that the air conditioner indoor unit 100 has multiple wind outlet modes to perform selective adjustment, and improve the user experience. And the position of the air duct switching plate 20 is adjusted according to the actual demand, so that the direction of the actual air outlet air duct 14 is matched with the required air outlet direction, the wind resistance is reduced, the air supply quantity is increased, the air supply distance is further, the indoor air circulation is better, and the temperature distribution is uniform.

In an embodiment, a fifth embodiment of the control method of the indoor unit 100 of an air conditioner according to the present invention is presented based on the first embodiment or the second embodiment.

In a fifth embodiment, the step S2 includes:

When the working mode is a cooling and air mixing mode, the bidirectional wind wheel is controlled to rotate forward, the panel 40 is controlled to switch to the first opening position, the opening degree of the panel 40 is controlled according to a preset air outlet gear, and the first cover plate 51 and the second cover plate 52 are controlled to be opened.

In this step, the heat exchanger 50 acts as an evaporator, and the panel 40 is switched to the first open position. When the bidirectional wind wheel rotates positively, a part of indoor air flow is driven to flow from the lower side of the casing 10 to the air inlet section 140 from bottom to top along a gap formed between the casing 10 and the panel 40, and flows to the bidirectional wind wheel after heat exchange and cooling are performed by the heat exchanger 50 in the air inlet section 140, another part of indoor air flow flows to the bidirectional wind wheel from the second air inlet 13, and the two air flows are fully stirred and mixed by the bidirectional wind wheel and then are sent out from the first air inlet 11. And then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable. The temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the fan assembly 301, the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

Or the step S2 includes:

When the working mode is a cooling non-mixing mode, the bidirectional wind wheel is controlled to rotate forward, the panel 40 is controlled to switch to the first opening position, the opening degree of the panel 40 is controlled according to a preset air outlet gear, the first cover plate 51 is controlled to be opened, and the second cover plate 52 is controlled to be closed.

In this step, the heat exchanger 50 acts as an evaporator, and the panel 40 is switched to the first open position. When the bidirectional wind wheel rotates forward, a part of indoor air flow is driven to flow from the lower side of the casing 10 to the air inlet section 140 from bottom to top along a gap formed between the casing 10 and the panel 40, and is sent out from the first air port 11 after heat exchange and temperature reduction are performed by the heat exchanger 50 in the air inlet section 140. And then the cold air sinks, the cold air does not directly blow the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable.

Or the step S2 includes:

when the working mode is a heating air mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the panel 40 is controlled to switch to the second opening position, the opening degree of the panel 40 is controlled according to a preset air outlet gear, and the first cover plate 51 and the second cover plate 52 are controlled to be opened.

In this step, the heat exchanger 50 acts as a condenser, and the panel 40 is switched to the second open position. When the bidirectional wind wheel reverses, a part of indoor air flow is driven to flow from the upper side of the casing 10 to the air inlet section 140 from top to bottom along a gap formed between the casing 10 and the panel 40, flows to the bidirectional wind wheel after heat exchange and temperature rise through the heat exchanger 50 in the air inlet section 140, and flows to the bidirectional wind wheel from the first air inlet 13, and the other part of indoor air flow flows to the bidirectional wind wheel from the second air inlet 12 after fully stirring and mixing the two air flows through the bidirectional wind wheel. The hot air rises and cannot float above the room, so that the phenomenon of heating layering is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable. The temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation is quickened, the heating temperature rise or the refrigerating temperature drop time is reduced, the human comfort is improved, the heat exchange air flow and the non-heat exchange air flow can be fully mixed by utilizing the fan assembly 301, the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature layering is avoided, and the human comfort is further improved.

Or the step S2 includes:

When the working mode is a heating non-mixing mode, the bidirectional wind wheel is controlled to rotate reversely, the panel 40 is controlled to switch to the second opening position, the opening degree of the panel 40 is controlled according to a preset air outlet gear, the first cover plate 51 is controlled to be opened, and the second cover plate 52 is controlled to be closed.

In this step, the heat exchanger 50 acts as a condenser, and the panel 40 is switched to the second open position. When the bi-directional wind wheel rotates reversely, a part of indoor air flow is driven to flow from the upper side of the casing 10 to the air inlet section 140 from top to bottom along a gap formed between the casing 10 and the panel 40, and is sent out from the second air port 12 after heat exchange and temperature rise are performed by the heat exchanger 50 in the air inlet section 140. The hot air rises and cannot float above the room, so that the phenomenon of heating layering is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable.

In the above embodiment, the air outlet gear of the indoor unit 100 of the air conditioner may be adjusted by adjusting the opening of the panel 40, it may be understood that the larger the opening of the panel 40, the larger the air inlet volume at the air inlet 13, so that the larger the actual heat exchange air volume of the indoor unit 100 of the air conditioner is, and the larger the noise generated by the indoor unit 100 of the air conditioner is, generally, when the indoor unit 100 of the air conditioner is just turned on, in order to achieve rapid cooling or heating, the panel 40 needs to be turned on to the maximum opening, and when the indoor temperature reaches or approaches to the preset target temperature value, the opening of the panel 40 may be reduced appropriately to reduce the noise, and according to various factors such as maintaining the indoor temperature constant, saving energy, and controlling the indoor noise, the opening of the panel 40 is selected appropriately. Referring to fig. 7, the opening degree 4b of the upper end of the panel 40 indicates the opening angle of the panel 40 when the upper end of the panel 40 is rotatably connected to the casing 10 in the cooling mode. The opening degree of the lower end of the panel 40 indicates the opening angle of the panel 40 in the case that the lower end of the panel 40 is rotatably connected to the cabinet 10 in the heating mode.

In this embodiment, the user or the control system inside the air conditioner may adjust according to the actual needs, control the opening and closing of the first cover plate 51 and/or the second cover plate 52 in different heat exchange modes, and control the bidirectional wind wheel to rotate forward or backward, select different wind outlet and wind inlet, and adjust the wind outlet direction, so that the air conditioner indoor unit 100 has multiple wind outlet modes to perform selective adjustment, and improve the user experience. And the panel 40 is arranged to make the actual air inlet position and the actual air outlet position distant from each other, so as to avoid the phenomenon of short circuit of the air flow caused by the direct flow of the air outlet air flow of the indoor unit 100 of the air conditioner to the air inlet 13.

When the user mode is set, in an embodiment, the heat exchange mode is first determined to be a cooling mode or a heating mode, if the heat exchange mode is the cooling mode, the bidirectional wind wheel is controlled to rotate forward, the first cover plate 51 is opened, the air duct switching plate 20 is controlled to switch to the first working position, the panel 40 is controlled to switch to the first opening position, and the panel 40 is controlled to open to a proper opening according to the set air outlet gear. Further, whether the air mixing mode is adopted is determined, if so, the second cover plate 52 is opened, and the second cover plate 52 is controlled to a proper opening according to the set air mixing gear, and if the air outlet gear or the air mixing gear is changed during the indoor unit 100 of the air conditioner, the opening of the panel 40 and the opening of the second cover plate 52 can be adjusted according to actual requirements. If the air conditioner is in the heating mode, the bidirectional wind wheel is controlled to rotate reversely, the second cover plate 52 is opened, the air duct switching plate 20 is controlled to switch to the second working position, the panel 40 is controlled to switch to the second opening position, and the panel 40 is controlled to be opened to a proper opening degree according to the set air outlet gear. Further, whether the air mixing mode is adopted is determined, if so, the first cover plate 51 is opened, and the first cover plate 51 is controlled to a proper opening according to a set air mixing gear, and if the air outlet gear or the air mixing gear is changed during the indoor unit 100 of the air conditioner, the opening of the panel 40 and the opening of the first cover plate 51 can be adjusted according to actual requirements.

In an embodiment, a sixth embodiment of a control method of an air conditioning indoor unit 100 according to the present invention is presented based on the first embodiment.

In a sixth embodiment, the step S1 includes:

And acquiring a heat exchange mode and an air outlet gear of the air conditioner indoor unit.

In this step, the heat exchange mode may be set by a user, or may be preset by a manufacturer in the execution body, so that the execution body may be automatically determined according to multiple factors such as the current ambient temperature, humidity, time, and the like. Specifically, the heat exchange mode includes a cooling mode in which the heat exchanger 50 functions as an evaporator or a heating mode in which the heat exchanger 50 functions as a condenser. In a specific implementation, the air volumes of different air outlet gears can be preset by manufacturers of the indoor units 100 of the air conditioner, and the different air outlet gears correspond to different air volumes. In this embodiment, the air outlet gear includes an ultra-high gear, a medium gear, a low gear and a mute gear in which the air volume is sequentially reduced. When the air conditioning indoor unit 100 is in use, the air outlet gear may be set automatically by the air conditioning indoor unit 100 according to environmental parameters, or may be selected by a user.

The step S1 includes:

and obtaining the matching position of the air duct switching plate according to the mapping relation between the air outlet gear corresponding to the heat exchange mode and the matching position.

It should be noted that, at the matching position corresponding to a certain air outlet gear of the air duct switching board 20, when the air duct switching board 20 moves to the matching position, the noise value is smaller in the air outlet gear. In a specific implementation, the matching positions corresponding to different air outlet gears may be preset by a manufacturer before the air conditioner indoor unit 100 leaves the factory. The noise value of the air conditioning indoor unit 100 is within a preset range, and the specific range of the preset range is not limited, and the specific preset range is not greater than the noise value of the air conditioning indoor unit 100 in the air outlet gear when the air duct switching plate 20 is fixedly arranged.

Note that, the matching position of the air duct switching plate 20 is related to the outlet gear of the indoor unit 100. Meanwhile, since the air duct 14 has different air duct resistances in the cooling mode and the heating mode, the resistance of the air duct 14 is increased mainly due to the condensed water generated by the heat exchanger 50 in the cooling mode. The matching positions of the corresponding air duct switching plates 20 are also different in the same air outlet gear between the cooling mode and the heating mode. In a specific implementation, the printed relationship between the matching position of the air duct switching board 20 and the different air outlet gear positions of the indoor unit 100 in the cooling mode and the heating mode may be as shown in table 1 and table 2. It should be noted that, the air duct switching plate 20 in this embodiment is not limited to be rotatably mounted, and in other embodiments, the corresponding matching positions of the air duct switching plate 20 in different heat exchange modes and air outlet gears may be set according to other manners set by the manufacturer.

And controlling the air duct switching plate to move to the matching position.

In a specific implementation, when the indoor unit 100 of the air conditioner operates in a certain heat exchange mode and in an air outlet gear, the air duct switching plate 20 may be controlled to move to a corresponding switching angle and/or a matching position where the minimum distance t between the air duct switching plate 20 and the wind wheel meets the requirement of the distance t in table 1 according to the above tables 1 and 2.

In this embodiment, since the air duct switching plate 20 and the wind wheel are movably disposed relatively, the distance t between the air duct switching plate 20 and the wind wheel in the radial direction varies with the movement of the air duct switching plate. When the indoor unit 100 of the air conditioner works in different air outlet gears and heat exchange modes, the air duct switching plate 20 can be moved to a matching position with a reasonable distance between the wind wheels, so that the working noise value of the indoor unit 100 of the air conditioner is relatively smaller. The air conditioning indoor unit 100 provided in this embodiment can more accurately adjust the working noise of the air conditioning indoor unit 100 by controlling the activity of the air duct switching plate 20, so that the noise value is relatively reduced and the user experience is more comfortable when the air conditioning indoor unit 100 operates in different air outlet gears.

In an embodiment, a seventh embodiment of the control method of the air conditioning indoor unit 100 according to the present invention is presented based on the sixth embodiment.

In a seventh embodiment, the step of obtaining the matching position of the air duct switching plate according to the mapping relationship between the air outlet gear corresponding to the heat exchange mode and the matching position includes:

and obtaining the matching angle of the air duct switching plate according to the mapping relation between the air outlet gear corresponding to the heat exchange mode and the matching angle.

In an embodiment, the matching position of the air duct switching plate 20 and the printed relation between the air conditioner indoor unit 100 and different air outlet gears in the cooling mode and the heating mode may be as shown in table 1 and table 2 above. In a specific implementation, the matching angle F of the air duct switching plate 20 may be obtained according to the mapping relationship between the air outlet gear and the matching angle shown in the foregoing tables 1 and 2. In other embodiments, the matching positions of the air duct switching plate 20 corresponding to different heat exchange modes and air outlet gears can be set according to other manners set by the manufacturer.

The step of controlling the air duct switching plate to move to the matching position comprises the following steps:

determining a target switching angle according to the difference between the current angle of the air channel switching plate and the matching angle

In this step, the current angle may be one of the matching angles F or a value different from the matching angle F, but an angle value capable of feeding back the actual rotation position of the duct switching plate 20 may be measured based on the same reference.

The difference between the current angle and the matching angle F is a target switching angle, when the difference is positive, the air duct switching plate 20 can rotate clockwise from the current angle by the target switching angle, and when the difference is negative, the air duct switching plate 20 can rotate anticlockwise from the current angle by the target switching angle, so that the matching angle F can be achieved.

And controlling the air duct switching plate to rotate through the target switching angle.

In this step, the duct switching plate 20 can be moved to the matching position by controlling the duct switching plate 20 to rotate through the target switching angle.

In this embodiment, the matching position of the air duct switching plate 20 is determined according to two conditions of the heat exchange mode and different air outlet gears of the air conditioner indoor unit 100, and the difference of the air duct resistance of the air duct 14 in the cooling mode and the heating mode is considered, so that the regulation and control are more accurate, and the corresponding air conditioner indoor unit 100 has lower working noise. And according to the moving mode of the air channel switching plate 20, the air channel switching plate 20 is controlled to rotate through the target switching angle, so that the air channel switching plate 20 can be switched to the corresponding matching position, and the operation is simple and convenient.

In addition, in order to achieve the aim, the invention also provides a control device which comprises a memory, a processor and a control program of the air conditioner indoor unit, wherein the control program is stored on the memory and can run on the processor, and the control program of the air conditioner indoor unit is configured to achieve the control method of the air conditioner indoor unit.

Because the control device adopts all the technical schemes of all the embodiments, the control device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.

In addition, in order to achieve the aim, the invention also provides an air conditioner, which comprises the control device, wherein the control device comprises a memory, a processor and a control program of the air conditioner indoor unit, the control program is stored on the memory and can run on the processor, and the control program of the air conditioner indoor unit is configured to achieve the control method of the air conditioner indoor unit.

Because the air conditioner adopts all the technical schemes of all the embodiments, the air conditioner at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.

In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium stores a control program of the air conditioner indoor unit, and the control program of the air conditioner indoor unit realizes the control method of the air conditioner indoor unit when being executed by a processor.

Because the storage medium adopts all the technical schemes of all the embodiments, the storage medium has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a computer readable storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, including several instructions for causing a smart terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. An indoor unit for an air conditioner, characterized in that it comprises:

The housing has an air duct, an air inlet, a first air outlet and a second air outlet connected to the air duct, and the air duct includes an air inlet section adjacent to the air inlet;

A heat exchanger is located within the air inlet section; and,

The fan assembly is located in the air duct and outside the air outlet of the air inlet section;

The fan assembly is configured to drive airflow into the air duct from one of the first air outlet and the second air outlet, and the air inlet, and out from the other of the first air outlet and the second air outlet.

The first air vent and the second air vent are spaced apart in the vertical direction;

The wind turbine assembly includes a bidirectional impeller;

The air duct also includes a first air duct section adjacent to the first air outlet and a second air duct section adjacent to the second air outlet;

The indoor unit of the air conditioner also includes a duct switching plate, which forms part of the duct wall. The duct switching plate is movably disposed on the housing to have a first working position and a second working position. During the movement of the duct switching plate from the first working position to the second working position, the air inlet of the first duct section gradually increases, and during the movement of the duct switching plate from the second working position to the first working position, the air inlet of the second duct section gradually increases.

The bidirectional wind turbine is a cross-flow wind turbine. The air inlet is located between the first air inlet and the second air inlet in the vertical direction. The air duct switching plate is located on the side of the cross-flow wind turbine facing away from the air inlet and is arranged in an arc-shaped plate that bends away from the cross-flow wind turbine.

The air duct switching plate is rotatably mounted on the housing, and the rotation axis of the air duct switching plate is arranged side by side with the rotation axis of the cross-flow fan. The air duct switching plate has a first rotating end and a second rotating end arranged opposite to each other on both sides of the rotation axis. The first rotating end is close to the first air duct section, and the second rotating end is close to the second air duct section.

When the air duct switching plate is in the first working position, the first rotating end is away from the cross-flow fan wheel, and the second rotating end is close to the cross-flow fan wheel. When the air duct switching plate is in the second working position, the first rotating end is close to the cross-flow fan wheel, and the second rotating end is away from the cross-flow fan wheel.

2. The air conditioner indoor unit as described in claim 1, characterized in that a first cover plate and a second cover plate are movably provided on the casing, the first cover plate being openable and closable at the first air outlet, and the second cover plate being openable and closable at the second air outlet.

3. The air conditioner indoor unit as described in claim 2, characterized in that the casing has an installation side and a front side located in front of the installation side, the first air vent and the second air vent are spaced apart in the vertical direction, the first air vent is opened facing forward and upward, and the second air vent is opened facing downward;

The first cover plate is rotatably mounted on the upper edge of the first air vent, and the opening degree of the first cover plate is greater than or equal to 0 degrees and less than or equal to 50 degrees; and/or,

The second cover plate is rotatably installed on the rear edge of the second air outlet, and the opening degree of the second cover plate is greater than or equal to 0 degrees and less than or equal to 90 degrees.

4. The indoor unit of the air conditioner as claimed in claim 1, wherein the heat exchanger is arranged in an arc-shaped plate that is bent toward the air inlet.

5. The air conditioner indoor unit as claimed in claim 1, characterized in that, along the axial direction of the cross-flow fan, the angle between the line connecting the rotating shaft and the vertical direction is greater than or equal to 30 degrees and less than or equal to 60 degrees; and/or,

The radius of the cross-flow wind turbine is R, and the minimum distance S between the rotating shaft and the rotating shaft is greater than or equal to 1.2R and less than or equal to 1.6R.

6. The indoor unit of the air conditioner as claimed in claim 1, wherein the duct wall of the air inlet section includes a first volute and a second volute, the first volute and the second volute are spaced apart in the vertical direction, the first volute extends from the upper part of the air inlet to the direction of the cross-flow impeller, and the second volute extends from the lower part of the air inlet to the cross-flow impeller.

7. The air conditioner indoor unit as described in claim 6, characterized in that the minimum distance between the first volute tongue and the rotating shaft is greater than or equal to 1.1R and less than or equal to 1.3R; and/or,

The minimum distance between the second volute tongue and the rotating shaft is greater than or equal to 1.1R and less than or equal to 1.3R; and/or,

Along the axial direction of the cross-flow impeller, the angle between the line connecting the first volute tongue and the nearest point of the cross-flow impeller to the axis of rotation and the vertical direction is greater than or equal to 0 degrees and less than or equal to 50 degrees; and/or,

The cross-flow impeller inlet angle formed between the first volute tongue and the second volute tongue is greater than or equal to 150 degrees and less than or equal to 180 degrees.

8. The air conditioner indoor unit as claimed in claim 1, wherein the housing has a mounting side for mounting the air conditioner indoor unit and a front side located in front of the mounting side, and the air inlet is provided on the front side of the housing;

The front side of the housing is provided with a panel extending in the vertical direction. The panel is detachably disposed at the air inlet. When the panel is open, it has a first opening position in which the upper end of the panel is rotatably connected to the housing and the lower end of the panel is separated from the housing, and a second opening position in which the lower end of the panel is rotatably connected to the housing and the upper end of the panel is separated from the housing.

9. A control method for an indoor air conditioning unit, characterized in that the indoor air conditioning unit is an indoor air conditioning unit as described in any one of claims 1 to 8, and a first cover plate and a second cover plate are movably provided on the casing, the first cover plate being openable and closable at the first air outlet, and the second cover plate being openable and closable at the second air outlet;

The control method for the indoor unit of the air conditioner includes:

Obtain the operating mode of the indoor unit of the air conditioner;

The opening and closing of the first cover plate and/or the second cover plate are controlled according to the operating mode, and the operation of the fan assembly is controlled.

10. The control method for an indoor air conditioning unit as described in claim 9, characterized in that the step of controlling the opening and closing of the first cover plate and/or the second cover plate according to the working mode, and controlling the operation of the fan assembly includes:

When the working mode is the mixed air mode, the first cover and the second cover are controlled to open, and the opening degree of the first cover or the second cover is controlled according to the preset mixed air level.

11. The control method for an indoor air conditioning unit as described in claim 9 or 10, characterized in that the step of controlling the opening and closing of the first cover plate and/or the second cover plate according to the working mode, and controlling the operation of the fan assembly, includes:

When the operating mode is the cooling mixed air mode, the bidirectional fan is controlled to rotate forward, and the first cover and the second cover are controlled to open; and/or,

When the operating mode is the cooling non-mixed air mode, the bidirectional fan is controlled to rotate forward, and the first cover is controlled to open while the second cover is closed; and/or,

When the operating mode is heating and air mixing mode, the bidirectional fan is reversed, and the first and second cover plates are opened; and/or,

When the operating mode is heating non-mixed air mode, the bidirectional fan is controlled to reverse, and the first cover is controlled to open and the second cover is controlled to close.

12. The control method for an indoor air conditioning unit as described in claim 9 or 10, characterized in that the step of controlling the opening and closing of the first cover plate and/or the second cover plate according to the working mode, and controlling the operation of the fan assembly includes:

When the operating mode is the cooling mixed air mode, the bidirectional fan is controlled to rotate forward, the air duct switching plate is controlled to switch to the first operating position, and the first cover plate and the second cover plate are controlled to open; and/or,

When the operating mode is the cooling non-mixed air mode, the bidirectional fan is controlled to rotate forward, the air duct switching plate is controlled to switch to the first operating position, and the first cover is controlled to open and the second cover is controlled to close; and/or,

When the operating mode is heating and air mixing mode, the bidirectional fan is reversed, the duct switching plate is switched to the second operating position, and the first and second covers are opened; and/or,

When the working mode is heating non-mixed air mode, the bidirectional fan is controlled to reverse, the air duct switching plate is controlled to switch to the second working position, and the first cover is controlled to open and the second cover is controlled to close.

13. The control method for an indoor air conditioning unit as described in claim 9 or 10, characterized in that the housing has an installation side for mounting the indoor air conditioning unit and a front side located in front of the installation side, the air inlet is disposed on the front side of the housing, the front side of the housing is provided with a panel extending in the vertical direction, the panel is closably disposed at the air inlet, and the panel, in the open state, has a first open position in which the upper end of the panel is rotatably connected to the housing and the lower end of the panel is separated from the housing, and a second open position in which the lower end of the panel is rotatably connected to the housing and the upper end of the panel is separated from the housing;

The steps of controlling the opening and closing of the first cover plate and/or the second cover plate according to the working mode, and controlling the operation of the fan assembly, include:

When the operating mode is cooling mixed air mode, the bidirectional fan is controlled to rotate forward, the panel is controlled to switch to the first open position, and the opening degree of the panel is controlled according to the preset air outlet level, controlling the first cover and the second cover to open; and/or,

When the operating mode is cooling non-mixed air mode, the bidirectional fan is controlled to rotate forward, the panel is controlled to switch to the first open position, and the opening degree of the panel is controlled according to the preset air outlet level, controlling the first cover to open and the second cover to close; and/or,

When the operating mode is heating and air mixing mode, the bidirectional fan is reversed, the panel is switched to the second open position, and the opening degree of the panel is controlled according to the preset air outlet level, controlling the first cover and the second cover to open; and/or,

When the working mode is heating non-mixed air mode, the bidirectional fan is reversed, the panel is switched to the second open position, and the opening degree of the panel is controlled according to the preset air outlet level, the first cover is opened and the second cover is closed.

14. The control method for an indoor air conditioning unit as described in claim 9, characterized in that the step of obtaining the operating mode of the indoor air conditioning unit includes:

Obtain the heat exchange mode and air outlet speed of the indoor unit of the air conditioner;

After the step of obtaining the operating mode of the indoor unit of the air conditioner, the following is included:

The matching position of the air duct switching plate is obtained according to the mapping relationship between the air outlet speed and the matching position corresponding to the heat exchange mode.

Control the movement of the air duct switching plate to the matching position.

15. The control method for an indoor air conditioning unit as described in claim 14, characterized in that,

The step of obtaining the matching position of the air duct switching plate according to the mapping relationship between the air outlet speed and the matching position corresponding to the heat exchange mode includes:

The matching angle of the air duct switching plate is obtained according to the mapping relationship between the air outlet speed and the matching angle corresponding to the heat exchange mode.

The step of controlling the movement of the air duct switching plate to the matching position includes:

The target switching angle is determined based on the difference between the current angle of the air duct switching plate and the matching angle;

Control the air duct switching plate to rotate through the target switching angle.

16. A control device, characterized in that it comprises: a memory, a processor, and a control program for an indoor air conditioner unit stored in the memory and executable on the processor, wherein the control program for the indoor air conditioner unit, when executed by the processor, implements the steps of the control method for the indoor air conditioner unit as described in any one of claims 9 to 15.

17. An air conditioner, characterized in that the air conditioner includes a control device for an indoor unit as described in claim 16; or,

The indoor unit of the air conditioner as described in any one of claims 1 to 8.

18. A storage medium, characterized in that the storage medium stores a control program for an indoor air conditioning unit, wherein when the control program for the indoor air conditioning unit is executed by a processor, it implements the steps of the control method for the indoor air conditioning unit as described in any one of claims 9 to 15.