CN113915689A

CN113915689A - Indoor unit, air conditioner and control method of indoor unit

Info

Publication number: CN113915689A
Application number: CN202111210888.8A
Authority: CN
Inventors: 王辉; 余伟立; 刘欣慧; 宋钦勇
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-01-11
Anticipated expiration: 2041-10-18
Also published as: CN113915689B

Abstract

The invention provides an indoor unit, an air conditioner and a control method of the indoor unit. The indoor unit includes: the drain pan is provided with a drainage channel; the panel body is arranged on the bottom shell, the panel body is provided with an air outlet, an accommodating cavity is formed between the panel body and the bottom shell, and the drainage channel is communicated with the accommodating cavity; the first air deflector is connected with the panel body, the first air deflector is provided with a first opening position and a first closing position, and when the first air deflector is positioned at the first closing position, an air outlet channel is formed between the first air deflector and the bottom shell; the fan part is positioned in the accommodating cavity and connected with the bottom shell; when the first air deflector is located at the first closing position, the fan part works until negative pressure is formed in the containing cavity, so that liquid in the drainage channel enters the containing cavity. Adopt the technical scheme of this application, the negative pressure environment suction liquid in indoor set through forming the chamber that holds need not additionally to increase driver part or imbibition box, has reduced the cost of indoor set.

Description

Indoor unit, air conditioner and control method of indoor unit

Technical Field

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

Background

With the popularization of air conditioner use, users pay more attention to the comfort of the air conditioner. When the air conditioner is in the cooling or heating mode, the indoor air may be too dry. In the prior art, some air conditioners have a humidifying function, but all the humidifying air conditioners have the problems of complex structure, high cost, small humidifying amount and the like, are not high in practicability and are difficult to popularize in the market. In order to solve the above problems, an air conditioner with a simple structure and low cost and high humidification efficiency is needed.

Disclosure of Invention

The invention mainly aims to provide an indoor unit, an air conditioner and a control method of the indoor unit, so as to solve the problem of high cost of the indoor unit in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided an indoor unit including: the drain pan is provided with a drainage channel; the panel body is arranged on the bottom shell, the panel body is provided with an air outlet, an accommodating cavity is formed between the panel body and the bottom shell, and the drainage channel is communicated with the accommodating cavity; the first air deflector is connected with the panel body and provided with a first opening position and a first closing position, when the first air deflector is positioned at the first opening position, the first air deflector opens the air outlet, and when the first air deflector is positioned at the first closing position, an air outlet channel is formed between the first air deflector and the bottom shell; the fan part is positioned in the accommodating cavity and is connected with the bottom shell; when the first air deflector is located at the first closing position, the fan part works until negative pressure is formed in the containing cavity, so that liquid in the drainage channel enters the containing cavity.

Further, the top of drain pan is provided with drainage channel, and drainage channel extends the setting along the length direction of drain pan.

Further, the drainage channel is arranged at an angle of inclination to the horizontal.

Further, drainage channel sets up to the drainage groove, and the drainage groove has the opening, and the opening orientation in drainage groove holds chamber one side setting, and the drainage groove is through the opening in drainage groove and hold the chamber intercommunication.

Further, the indoor unit further includes: the liquid inlet pipeline is connected with the bottom shell and communicated with the first end of the drainage groove; and the drainage pipeline is connected with the bottom shell and communicated with the second end of the drainage groove.

Furthermore, the drainage groove is obliquely arranged towards one side of the fan part.

Further, the indoor unit includes: imbibition piece, imbibition piece are located and hold the intracavity, and the first end overlap joint of imbibition piece is in the opening part of drainage groove, and the second end and the panel body coupling of imbibition piece, imbibition piece are used for collecting the liquid of following drainage groove department exhaust.

Further, the indoor unit includes: the evaporator is located in the containing cavity and located between the liquid absorbing piece and the fan portion, and the evaporator is connected with the bottom shell.

Further, the indoor unit includes: the second air deflector is positioned on the outer side of the first air deflector and connected with at least one of the panel body and the bottom shell, the second air deflector is provided with a second opening position for opening the air outlet, and the second air deflector is provided with a second closing position for closing the air outlet.

Furthermore, one side of the bottom shell, which is far away from the air outlet, is provided with a mounting cavity, the mounting cavity is positioned at the top of the drainage channel, and the liquid inlet pipeline is positioned in the mounting cavity.

Furthermore, the width of the air outlet channel is set to be L, wherein L is more than or equal to 5mm and less than or equal to 10 mm.

Further, the angle of the inclination angle is beta, wherein beta is more than or equal to 3 degrees and less than or equal to 7 degrees.

Further, the indoor unit further includes: the liquid storage device is communicated with the drainage channel and is used for providing liquid for the drainage channel.

According to one aspect of the invention, an air conditioner is provided, which comprises an indoor unit, wherein the indoor unit is the indoor unit.

According to another aspect of the present invention, there is provided a method for controlling an indoor unit, the method being used for controlling the indoor unit, wherein the panel body has an air inlet, and the method includes the following steps: the indoor unit is provided with a first working mode, when the indoor unit is started up in the first working mode, the air inlet grille of the indoor unit is controlled to be closed, the first air deflector is controlled to be at a first closed position, the liquid inlet pipeline is controlled to be in an open state, the liquid discharge pipeline is controlled to be in a closed state, and the fan part is controlled to work at a preset rotating speed within a preset time; the air inlet grille is used for opening and closing the air inlet.

Further, before controlling the fan part to work at a preset rotating speed within a preset time, the method further comprises: and controlling the second air deflector to be in a downwind position so that the air guide surface of the second air deflector is arranged in parallel with the air duct surface of the bottom shell.

Further, the method comprises the steps of: the indoor unit is provided with a second working mode, and when the indoor unit is started to be in the second working mode, the air inlet grille is controlled to be opened, the first air deflector is controlled to be in the air guiding position, the second air deflector is controlled to be in the second opening position, and the fan part is controlled to be in the working state.

By applying the technical scheme of the invention, an accommodating cavity is formed between the panel body and the bottom shell, the bottom shell is provided with the drainage channel and is communicated with the accommodating cavity, the air outlet channel is formed between the first air deflector and the bottom shell, air flow in the accommodating cavity can be discharged through the air outlet channel, negative pressure is formed in the accommodating cavity, liquid is sucked into the accommodating cavity from the drainage channel, the liquid is sucked into the indoor unit through the negative pressure environment forming the accommodating cavity, namely, the power for sucking the liquid comes from pressure difference, no additional driving part or liquid suction box is needed, the cost of the indoor unit is reduced, the weight and the volume of the indoor unit are reduced, meanwhile, the liquid inlet amount of the indoor unit can be controlled by controlling the fan part, and the liquid inlet efficiency of the indoor unit is improved. By adopting the technical scheme, the indoor unit can complete the liquid suction task by using a simple structure, and the production cost of the indoor unit is effectively reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic view of the structure of a first embodiment of the indoor unit according to the invention;

figure 2 shows a schematic view of the structure of a second embodiment of the indoor unit according to the invention;

figure 3 shows a schematic view of the structure of a third embodiment of the indoor unit according to the invention;

figure 4 shows a schematic view of a fourth embodiment of the indoor unit according to the invention;

figure 5 shows a schematic flow chart of a first embodiment of a control method of an indoor unit according to the present invention;

fig. 6 shows a schematic flow chart of a second embodiment of the control method of the indoor unit according to the present invention.

Wherein the figures include the following reference numerals:

1. a bottom case; 10. a second air deflector; 11. a drainage groove; 12. a mounting cavity; 13. a liquid storage device; 14. an air duct surface;

2. a panel body; 21. an air outlet; 22. an air inlet grille;

3. an accommodating chamber;

4. a first air deflector; 41. an air outlet channel;

5. a fan section;

6. a liquid inlet pipeline;

7. a drainage line;

8. a liquid absorbing member;

9. an evaporator.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Among the prior art, humidification air conditioner has with high costs, the structure is complicated, the reliability scheduling problem not high, and the technical scheme of this application increases a humidification function through carrying out optimal design to the structure through indoor set on current indoor set basis, under the condition that the cost does not increase basically, realizes the function of air humidification. Indoor set in this application through reasonable structural design and logic control for the air conditioner realizes supplying water the humidification, but need not increase extra cost, makes the cost reach minimum. Of course, the indoor unit in this application also can be applied to other functions, for example set up the liquid that inhales into the antiseptic solution to do reasonable structural improvement, can realize utilizing the negative pressure that holds chamber 3 in order to inhale the antiseptic solution automatically.

Referring to fig. 1 to 6, according to an embodiment of the present application, an indoor unit is provided.

The indoor unit comprises a bottom shell 1, a panel body 2, a first air deflector 4 and a fan part 5. A drainage channel is arranged on the bottom shell 1. The panel body 2 is mounted on the bottom case 1. The panel body 2 has an air outlet 21. An accommodating cavity 3 is formed between the panel body 2 and the bottom shell 1. The drainage channel is communicated with the containing cavity 3. The first air deflector 4 is connected with the panel body 2. The first air deflector 4 has a first open position and a first closed position. When the first air guiding plate 4 is located at the first open position, the first air guiding plate 4 opens the air outlet 21. When the first air guiding plate 4 is located at the first closed position, an air outlet channel 41 is formed between the first air guiding plate 4 and the bottom case 1. The fan portion 5 is located in the accommodating chamber 3. The fan portion 5 is connected to the bottom case 1. When the first air deflector 4 is located at the first closing position, the fan part 5 operates until negative pressure is formed in the accommodating cavity 3, so that liquid in the drainage channel enters the accommodating cavity 3.

By applying the technical scheme of the invention, the accommodating cavity 3 is formed between the panel body 2 and the bottom shell 1, the drainage channel is arranged on the bottom shell 1 and is communicated with the accommodating cavity 3, the air outlet channel 41 is formed between the first air deflector 4 and the bottom shell 1, air flow in the accommodating cavity 3 can be discharged through the air outlet channel 41, negative pressure is formed in the accommodating cavity 3, liquid is sucked into the accommodating cavity 3 from the drainage channel, the indoor unit sucks the liquid through the negative pressure environment forming the accommodating cavity 3, namely, the power for sucking the liquid comes from pressure difference, no additional driving part or liquid suction box is needed, the cost of the indoor unit is reduced, the weight and the volume of the indoor unit are reduced, meanwhile, the liquid inlet amount of the indoor unit can be controlled by controlling the fan part 5, and the liquid inlet efficiency of the indoor unit is improved. By adopting the technical scheme, the production cost of the indoor unit is effectively reduced.

Further, a drainage channel is arranged at the top of the bottom shell 1. The drainage channel extends along the length direction of the bottom shell 1. The drainage channel can take many forms including, but not limited to, a drainage groove 11, a drainage tube, a drainage hole, etc. The arrangement enables the liquid in the drainage channel to uniformly cover the whole accommodating cavity 3, and improves the humidifying efficiency of the indoor unit.

In particular, the drainage channel is arranged at an angle of inclination to the horizontal. The liquid in the drainage channel can be circulated by utilizing the gravity of the liquid in the drainage channel, the whole drainage channel is covered along the length direction of the bottom shell 1, and the siphon effect in the indoor unit is also favorably generated.

As shown in FIG. 1, the drainage channels are provided as drainage slots 11. Drainage groove 11 has an opening. The opening of drainage groove 11 sets up towards holding chamber 3 one side. Drainage groove 11 communicates with holding chamber 3 through the opening of drainage groove 11. Liquid in the drainage channel enters into by the opening and holds in chamber 3, has improved the humidification efficiency of indoor set, has solved the little problem of humidification air conditioner humidification volume in the prior art, and drainage groove 11 sets up along the length direction slope of drain pan 1 simultaneously, utilizes the opening of drainage groove 11 can deliver liquid to indoor set everywhere evenly fast.

As shown in fig. 4, the indoor unit further includes a liquid inlet pipe 6 and a liquid discharge pipe 7. The liquid inlet pipeline 6 is connected with the bottom shell 1. The liquid inlet pipeline 6 is communicated with the first end of the drainage groove 11. The drain line 7 is connected to the bottom case 1. Drainage line 7 communicates with a second end of drainage channel 11. Through the reasonable arrangement of the liquid inlet pipeline 6, the indoor unit can suck liquid from the outside and can also arrange a liquid source in the indoor unit. Drainage groove 11 has two lateral walls on the length direction along drain pan 1, and the plane at two lateral walls places is perpendicular with the plane at drainage groove 11's opening place, is provided with the through-hole on the lateral wall, and the lateral wall that is located the higher one end in drainage groove 11 has first through-hole, and feed liquor pipeline 6 is connected with first through-hole, and the lateral wall that is located the lower one end in drainage groove 11 has the second through-hole, and fluid-discharge pipeline 7 is connected with the second through-hole.

Further, the drainage groove 11 is provided obliquely toward the fan portion 5 side. This arrangement allows liquid in the drainage groove 11 to flow toward the inside of the accommodating chamber 3 by its own weight.

As shown in fig. 3, the indoor unit includes a liquid absorbing member 8. The liquid absorbing member 8 is located in the containing chamber 3. The first end of the liquid absorbing component 8 is lapped at the opening of the drainage groove 11. The second end of the absorbent member 8 is connected to the panel body 2. The wicking member 8 serves to collect liquid drained from the drainage groove 11. The liquid absorbing member 8 may be a latticed light and thin absorbent cotton, and the liquid absorbing member 8 may be disposed under the filter net so that the liquid absorbing member 8 can maintain a clean state for a long time. The indoor unit can increase the humidity of the whole room by increasing the moisture content of the inlet air and the humidity of the outlet air.

Further, the indoor unit includes an evaporator 9. The evaporator 9 is located within the accommodating chamber 3. The evaporator 9 is located between the liquid absorbing member 8 and the blower portion 5. The evaporator 9 is connected to the bottom case 1. The arrangement enables the air flow with higher humidity passing through the liquid absorbing piece 8 to be driven and discharged by the fan part 5 after passing through the evaporator 9, and effectively increases the humidity of the air outlet of the indoor unit.

In an exemplary embodiment, the indoor unit includes a second air deflection plate 10. The second air guiding plate 10 is located outside the first air guiding plate 4. The second air deflector 10 is connected to at least one of the panel body 2 and the bottom case 1. The second air deflector 10 has a second open position for opening the outlet 21, and the second air deflector 10 has a second closed position for closing the outlet 21. The second air deflector 10 is an air deflector conventionally arranged at the air outlet 21 of the air conditioner, when the second air deflector 10 is closed, the indoor unit is integrally closed from the appearance, and the second air deflector 10 is pushed out or swung by a separate driving mechanism, so that air guiding operation can be effectively carried out or foreign matters can be prevented from entering the indoor unit.

Further, a mounting cavity 12 is disposed on a side of the bottom case 1 away from the air outlet 21. The installation cavity 12 is positioned at the top of the drainage channel, and the liquid inlet pipeline 6 is positioned in the installation cavity 12. The arrangement enables the liquid inlet pipeline 6 to be hidden inside the bottom shell 1, and facilitates wiring harness and management pipeline inside the indoor unit.

The width of the air outlet channel 41 is set to be L, wherein L is more than or equal to 5mm and less than or equal to 10 mm. The arrangement makes the accommodating cavity 3 convenient to form a negative pressure environment, the first air deflector 4 can not completely seal the air outlet 21 to block air discharge, and air backflow caused by the overlarge air outlet channel 41 can not be generated.

To further improve the flow of the liquid in the drainage channel, the angle of inclination is β. Wherein beta is more than or equal to 3 degrees and less than or equal to 7 degrees.

In the present embodiment, the indoor unit further includes a liquid storage device 13. The liquid storage device 13 is communicated with the drainage channel. The reservoir 13 is used to supply fluid to the drainage channels. The liquid storage device 13 can be a water storage box or other devices, and the liquid storage device 13 can be fixed on an indoor wall or can be located inside an indoor unit.

The embodiments described above can also be used in the field of equipment technology, that is, according to an aspect of the present invention, an air conditioner is provided, which includes an indoor unit, where the indoor unit is the indoor unit in the embodiments described above.

According to another aspect of the present application, a method for controlling an indoor unit is also provided, and the method is used for controlling the indoor unit of the above embodiment. The panel body 2 is provided with an air inlet, and the method comprises the following steps: the indoor unit has a first working mode, when the indoor unit is started, the air inlet grille 22 of the indoor unit is controlled to be closed, the first air deflector 4 is controlled to be at a first closed position, the liquid inlet pipeline 6 is controlled to be in an open state, the liquid exhaust pipeline 7 is controlled to be in a closed state, and the fan part 5 is controlled to work at a preset rotating speed within a preset time; the air inlet grille 22 is used for opening and closing the air inlet. The first operation mode may be a cooling humidification mode or a heating humidification mode.

Preferably, the fan part 5 can be a cross-flow fan, and the liquid inlet pipeline 6 can be a fine micro-pipe, i.e. the pipeline diameter of the liquid inlet pipeline 6 is not too large.

As shown in fig. 3, the air inlet is located at the upper part of the panel body 2, firstly, the stepping motor of the air inlet controls the air inlet grille 22 to be closed and sealed completely, and the air inlet flow stops entering from the air inlet. Then, the first air guiding plate 4 is adjusted inward (toward the direction of the cross-flow fan blade) to a first closed position, and is rotated to a position close to the cross-flow fan blade, so that the first air guiding plate 4 does not completely seal the air outlet 21, and a gap (i.e., an air outlet channel 41) with a certain width is left, so that air can be discharged. The second air deflector 10 is moved to the downwind position, so that the air is discharged without any wind resistance, and the air in the accommodating cavity is smoothly discharged. The rotating speed of the cross-flow fan blade of the indoor unit is operated to the highest limit rotating speed, and the liquid discharge pipeline 7 is closed. At this time, a certain negative pressure is formed in the whole air duct cavity (i.e., the accommodating cavity 3) of the indoor unit, and the liquid in the liquid storage device 13 can be sucked into the drainage groove 11 on the bottom shell 1 of the air conditioner through the liquid inlet pipeline 6. As shown in fig. 4, the air guide groove 11 is formed with a certain slope from left to right (i.e. along the length direction of the bottom casing 1) when viewed from the front of the indoor unit, so as to facilitate smooth liquid circulation, and the indoor unit covers the whole air guide groove 11 from left to right. The channels 11 are connected to a liquid absorbing member (such as a thin, meshed absorbent cotton) which is inclined downward (toward the fan section 5) to help utilize its own weight and create a siphon effect. The water absorption cotton is arranged at the lower part of the filter screen, dust in a house can be removed through the filter screen, the water absorption cotton is protected from being easily polluted, and the water absorption cotton can be replaced when being used all the year round. The other end of the drainage groove 11 is connected to the drainage pipeline 7. The drainage grooves 11 can be opened to drain the liquid by opening the drainage pipe 7 if there is excess water. After the absorbent cotton is completely soaked, the air conditioner is controlled according to the normal control mode, and the air inlet grille 22 and the first air deflector 4 at the air inlet are restored to the normal mode (the first air deflector 4 rotates to the first open position). Two physical phenomena of negative pressure and siphon are generated through the design, so that the indoor air is humidified.

Further, before controlling the fan part 5 to operate at the preset rotation speed within the preset time, the method further comprises: the second air guiding plate 10 is controlled to be located at a downwind position, so that the air guiding surface of the second air guiding plate 10 is arranged in parallel to the air duct surface 14 of the bottom case 1. As shown in fig. 2, the downwind position includes a position where the wind guiding surface of the second wind guiding plate 10 is parallel to the wind channel surface 14 of the bottom case 1, and the downwind position also includes a position where a slight included angle exists between the wind guiding surface of the second wind guiding plate 10 and the wind channel surface 14 of the bottom case 1, that is, the height of the end of the second wind guiding plate 10 away from the air outlet 21 is not greater than the height of the end of the second wind guiding plate 10 away from the air outlet 21 when the wind guiding surface of the second wind guiding plate 10 is parallel to the wind channel surface 14 of the bottom case 1.

Further, the method comprises the steps of: the indoor unit has a second working mode, and when the indoor unit starts the second working mode, the air inlet grille 22 is controlled to be opened, the first air deflector 4 is controlled to be at the air guiding position, the second air deflector 10 is controlled to be at the second opening position, and the fan part 5 is controlled to be in a working state. The second operation mode is a normal cooling mode or a normal heating mode, and as shown in fig. 3, the indoor unit in the second operation mode is schematically illustrated, and when the user does not need to humidify the air, the air conditioner operates in the normal mode. The air inlet grille 22 is opened, and the first air deflector 4 in the air duct realizes directional air guiding along with the second air deflector 10 outside the air outlet 21. The two air deflectors operate according to the state set by the user. The air guiding positions can be set to be multiple, the indoor unit realizes the 'cooling upward blowing position and heating downward blowing', for example, the first air guiding plate 4 can be rotated anticlockwise from the position shown in fig. 3 to the position parallel to the second air guiding plate 10 to guide the air downwards when heating is realized.

In this embodiment, the indoor unit may also arrange humidity sensors at the air inlet and the air outlet 21, determine whether the humidity of the room meets the setting requirement of the user after each humidification, repeat the above humidification process if the humidity of the room does not meet the setting requirement of the user, and stop the humidification until the humidity of the room meets the setting requirement of the user.

By adopting the technical scheme of the application, the evaporator 9, the air inlet, the liquid discharge pipeline 7 and the air channel of the indoor unit are mostly completely sealed through ingenious matching among the indoor unit structures and logical adjustment of the air speed of the indoor unit system, only one small slit (an air outlet channel 41) at the air outlet 21 is left to evacuate air in the air channel, so that a certain negative pressure is formed in the accommodating cavity 3 of the indoor unit, water in a micro pipeline (a liquid inlet pipeline 6) can be sucked by the negative pressure to be drawn into the evaporator 9 part through water, and finally the light and thin water absorption cotton is wetted.

By adopting the technical scheme, the indoor unit can reach the maximum negative pressure degree through the rotating speed of the fan part 5. Through the position change of the first air deflector 4 at the air outlet 21, the sealed evacuation is realized, and the cost is saved. The air conditioner has the advantages of low cost, large humidification amount, comfort, reliability and the like.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An indoor unit, comprising:

the drainage device comprises a bottom shell (1), wherein a drainage channel is arranged on the bottom shell (1);

the panel body (2) is mounted on the bottom shell (1), the panel body (2) is provided with an air outlet (21), an accommodating cavity (3) is formed between the panel body (2) and the bottom shell (1), and the drainage channel is communicated with the accommodating cavity (3);

the first air deflector (4) is connected with the panel body (2), the first air deflector (4) is provided with a first opening position and a first closing position, when the first air deflector (4) is located at the first opening position, the first air deflector (4) opens the air outlet (21), and when the first air deflector (4) is located at the first closing position, an air outlet channel (41) is formed between the first air deflector (4) and the bottom shell (1);

the fan part (5), the fan part (5) is positioned in the accommodating cavity (3), and the fan part (5) is connected with the bottom shell (1);

when the first air deflector (4) is located at the first closing position, the fan part (5) works until negative pressure is formed in the accommodating cavity (3), so that liquid in the drainage channel enters the accommodating cavity (3).

2. Indoor unit according to claim 1, characterized in that the top of the bottom shell (1) is provided with the drainage channel, which extends along the length of the bottom shell (1).

3. The indoor unit of claim 2, wherein the drainage passage is disposed at an inclined angle to a horizontal plane.

4. Indoor unit according to claim 1, characterized in that the drainage channel is provided as a drainage groove (11), the drainage groove (11) has an opening, the opening of the drainage groove (11) is provided towards one side of the accommodating chamber (3), and the drainage groove (11) is communicated with the accommodating chamber (3) through the opening of the drainage groove (11).

5. The indoor unit according to claim 4, further comprising:

the liquid inlet pipeline (6) is connected with the bottom shell (1), and the liquid inlet pipeline (6) is communicated with the first end of the drainage groove (11);

the drainage pipeline (7), drainage pipeline (7) with drain pan (1) is connected, drainage pipeline (7) with the second end intercommunication of drainage groove (11).

6. The indoor unit according to claim 4, wherein the drainage groove (11) is provided to be inclined toward the side of the fan unit (5).

7. The indoor unit according to claim 4, wherein the indoor unit comprises:

imbibition spare (8), imbibition spare (8) are located hold chamber (3), the first end overlap joint of imbibition spare (8) in the opening part of drainage groove (11), the second end of imbibition spare (8) with panel body (2) are connected, imbibition spare (8) are used for collecting the follow drainage groove (11) department exhaust liquid.

8. The indoor unit according to claim 7, wherein the indoor unit comprises:

evaporimeter (9), evaporimeter (9) are located hold in chamber (3), evaporimeter (9) are located imbibition spare (8) with between fan portion (5), evaporimeter (9) with drain pan (1) is connected.

9. The indoor unit according to claim 1, wherein the indoor unit comprises:

the second air deflector (10) is located on the outer side of the first air deflector (4), the second air deflector (10) is connected with at least one of the panel body (2) and the bottom shell (1), the second air deflector (10) is provided with a second opening position for opening the air outlet (21), and the second air deflector (10) is provided with a second closing position for closing the air outlet (21).

10. Indoor unit according to claim 5, characterized in that a mounting cavity (12) is provided on the side of the bottom shell (1) remote from the air outlet (21), the mounting cavity (12) is located at the top of the drainage channel, and the liquid inlet pipe (6) is located in the mounting cavity (12).

11. Indoor unit according to claim 1, characterized in that the width of the outlet channel (41) is L, where L is larger than or equal to 5mm and smaller than or equal to 10 mm.

12. The indoor unit according to claim 3, wherein the inclination angle has an angle β, and wherein β is 3 ° or more and 7 ° or less.

13. The indoor unit according to claim 1, further comprising:

the liquid storage device (13) is communicated with the drainage channel, and the liquid storage device (13) is used for providing liquid for the drainage channel.

14. An air conditioner comprising an indoor unit, characterized in that the indoor unit is the indoor unit according to any one of claims 1 to 13.

15. A control method of an indoor unit, characterized in that the method is used for controlling the indoor unit of any one of claims 1 to 13, the panel body (2) having an air inlet, the method comprising the steps of:

the indoor unit is provided with a first working mode, when the indoor unit is started, an air inlet grille (22) of the indoor unit is controlled to be closed, a first air deflector (4) is controlled to be at a first closed position, a liquid inlet pipeline (6) is controlled to be in an open state, a liquid discharge pipeline (7) is controlled to be in a closed state, and a fan part (5) is controlled to work at a preset rotating speed within preset time;

the air inlet grille (22) is used for opening the air inlet and closing the air inlet.

16. The method according to claim 15, wherein before controlling the fan section (5) to operate at the preset rotation speed for the preset time, the method further comprises: and controlling the second air deflector (10) to be in a downwind position so that the air guide surface of the second air deflector (10) is arranged in parallel with the air duct surface (14) of the bottom shell (1).

17. The method according to claim 15, characterized in that it comprises the steps of:

the indoor unit is provided with a second working mode, when the indoor unit starts the second working mode, the air inlet grille (22) is controlled to be opened, the first air deflector (4) is controlled to be in an air guiding position, the second air deflector (10) is controlled to be in a second opening position, and the fan part (5) is controlled to be in a working state.