CN110319489B - Air conditioner indoor unit - Google Patents

Abstract

The present invention provides an air conditioner indoor unit, comprising a cooling and heating device and a fresh air device arranged below the cooling and heating device, the fresh air device comprising: a fresh air housing, a fresh air channel and a dirty air channel arranged in the fresh air housing, a fresh air inlet and a fresh air outlet connected to the fresh air channel, and a dirty air inlet and a dirty air outlet connected to the dirty air channel arranged on the fresh air housing; a baffle device, the baffle device is located outside the fresh air inlet and the dirty air outlet, the baffle device has a first working state that connects the fresh air inlet and the dirty air outlet, a second working state that separates the fresh air inlet and the dirty air outlet, and a third working state that blocks the fresh air inlet and opens the dirty air outlet. The air conditioner indoor unit of the present invention solves the problem in the prior art that the indoor air quality is low due to the way of fresh air ventilation in the room.

Description

Air conditioner indoor unit

Technical Field

The present invention relates to the field of household appliances, and in particular to an indoor unit of an air conditioner.

Background Art

The increase in PM2.5 concentration has directly led to frequent haze weather and a significant increase in toxic and harmful substances in fog, which has seriously threatened human health. In this case, conventional home comfort air conditioners can no longer meet people's needs, and health, comfort and environmental protection have become the goals of modern air conditioning development.

For ordinary air conditioners, in order to ensure their air conditioning effect, the air-conditioned room must be closed. As a result, the dust, smoke, bacteria, viruses, and exhaust gas in the room continue to increase, the oxygen content continues to decrease, and the air quality is getting worse and worse. In recent years, as "air conditioning disease" has attracted more and more attention, people have begun to be required not to stay in air-conditioned rooms for a long time, and to open windows to let in fresh air or to exhaust indoor air to form negative pressure through the gaps of doors and windows to add fresh air to the room and improve the indoor environment. There are currently two main methods used in the market for exchanging new and old air:

1. Use a single fan to exhaust the indoor air to the outside, so that a negative pressure area is formed indoors, forcing the fresh air outside to flow into the room through the gaps in the room;

2. Directly draw fresh air from outside into the room;

Both of the above methods have the problem of energy loss, because the direct introduction of outdoor cold and hot air will inevitably cause the original indoor temperature to change, resulting in a large amount of energy loss, increasing the energy loss of the air conditioner, and reducing the cooling and heating effects of the air conditioner. Especially in winter, the input of outdoor cold air may even cause condensation in the air conditioner;

In addition, both of the above two methods have the problem of polluted air entering the room without being filtered. When there is severe smog outside, directly extracting outdoor air will cause more serious pollution indoors.

Summary of the invention

The main purpose of the present invention is to provide an air conditioner indoor unit to solve the problem that the indoor air quality is low in the prior art method of ventilating fresh air indoors.

In order to achieve the above-mentioned purpose, the present invention provides an air-conditioning indoor unit, including a cooling and heating device and a fresh air device arranged below the cooling and heating device, the fresh air device including: a fresh air shell, in which a fresh air channel and a dirty air channel are arranged, the fresh air shell is provided with a fresh air inlet and a fresh air outlet connected with the fresh air channel, and a dirty air inlet and a dirty air outlet connected with the dirty air channel; a baffle device, the baffle device is located on the outside of the fresh air inlet and the dirty air outlet, the baffle device has a first working state that connects the fresh air inlet and the dirty air outlet, a second working state that separates the fresh air inlet and the dirty air outlet, and a third working state that blocks the fresh air inlet and opens the dirty air outlet.

Furthermore, the baffle device includes a fresh air deflector and a dirty air deflector. The fresh air deflector can be swingably disposed on the outside of the fresh air inlet to block or avoid the fresh air inlet, and the dirty air deflector can be swingably disposed on the outside of the dirty air outlet to block or avoid the dirty air outlet, so that the baffle device is in a corresponding working state by adjusting the positions of the fresh air deflector and the dirty air deflector.

Furthermore, an installation portion is provided on the outer side of the fresh air inlet and the dirty air outlet, and the installation portion has a first vent and a second vent, and a first installation cavity for connecting the first vent and the fresh air inlet and a second installation cavity for connecting the second vent and the dirty air outlet are provided in the installation portion; the first installation cavity and the second installation cavity are connected through a connecting cavity, and when the baffle device is in the second working state, at least part of the baffle device is located in the connecting cavity to separate the first installation cavity and the second installation cavity.

Furthermore, the baffle device includes: a fresh air deflector, which is rotatably arranged in the first installation cavity and the connecting cavity, and the fresh air deflector has a first position blocking between the first installation cavity and the connecting cavity and a second position opposite to the fresh air inlet to block the fresh air intake.

Furthermore, the baffle device includes: a dirty wind deflector, which is rotatably arranged in the second installation cavity and the connecting cavity, and the dirty wind deflector has a third position blocking between the second installation cavity and the connecting cavity and a fourth position opposite to the dirty wind outlet to block the dirty wind from flowing out.

Furthermore, the mounting portion has a first mounting member, the first mounting member is located between the first vent and the second vent, and the fresh air deflector and the dirty air deflector are rotatably disposed on opposite sides of the first mounting member.

Furthermore, the mounting portion also has a second mounting member, and a connecting cavity is formed between the first mounting member and the second mounting member. The connecting cavity has a first accommodating space and a second accommodating space that are relatively arranged, so that the fresh air deflector is located in the first accommodating space when the fresh air deflector is in the first position, and the dirty air deflector is located in the second accommodating space when the dirty air deflector is in the third position.

Furthermore, the first mounting member has a first flange, and the second mounting member has a second flange, and the first flange and the second flange are arranged opposite to each other and are both located between the first accommodating space and the second accommodating space; when the fresh air deflector rotates to the first position, the fresh air deflector abuts against the first flange and the second flange to separate the first mounting cavity from the connecting cavity; when the dirty air deflector rotates to the third position, the dirty air deflector abuts against the first flange and the second flange to separate the second mounting cavity from the connecting cavity.

Furthermore, the baffle device also includes: a first drive motor, which is arranged on the mounting portion and is drivingly connected to the fresh air deflector to drive the fresh air deflector to rotate between the first position and the second position.

Furthermore, the baffle device also includes: a second drive motor, which is arranged on the mounting portion and is drivingly connected to the dirty wind deflector to drive the dirty wind deflector to rotate between the third position and the fourth position.

The air conditioner indoor unit of the present invention can realize the conversion of the fresh air device in three working states by setting a baffle device. When the baffle device is in the first working state, the indoor air returns to the room after passing through the dirty air channel and the fresh air channel in sequence; when the baffle device is in the second working state, the fresh air inlet and the dirty air outlet are all opened, and the outdoor air enters the fresh air channel from the fresh air inlet and flows into the room, and the indoor air returns to the outside through the dirty air outlet after passing through the dirty air channel; when the baffle device is in the third working state, the indoor air flows into the outside through the dirty air outlet after passing through the dirty air channel. Such a setting can enable the fresh air device to convert different working states under different indoor environments to improve the indoor air quality, meet the needs of users, and improve comfort.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

FIG1 shows a schematic structural diagram of an indoor unit of an air conditioner according to the present invention from one viewing angle;

FIG2 shows a schematic structural diagram of an air-conditioning indoor unit from another perspective according to the present invention;

Fig. 3 shows a cross-sectional view of the air conditioner indoor unit at A-A in Fig. 1;

Fig. 4 shows a cross-sectional view of the air conditioner indoor unit at B-B in Fig. 2;

Fig. 5 shows a cross-sectional view of the air conditioner indoor unit at C-C in Fig. 2;

Fig. 6 shows a cross-sectional view of the air conditioner indoor unit at D-D in Fig. 1;

FIG7 is a schematic structural diagram showing an embodiment of a baffle device of an indoor unit of an air conditioner according to the present invention;

Fig. 8 shows a cross-sectional view of the baffle device in Fig. 7 at a point E-E in a second working state;

Fig. 9 shows a cross-sectional view of the baffle device in Fig. 7 at a third working state at E-E; and

Fig. 10 shows a cross-sectional view taken at E-E of the baffle device in Fig. 7 in the first working state.

The above drawings include the following reference numerals:

10. Refrigeration and heating device; 20. Fresh air device; 22. First filter; 23. Second filter; 24. Third filter; 30. Fresh air housing; 31. Fresh air channel; 32. Dirty air channel; 311. Fresh air inlet; 312. Fresh air outlet; 321. Dirty air inlet; 322. Dirty air outlet; 40. Heat exchange core; 50. Baffle device; 51. Fresh air guide plate; 52. Dirty air guide plate; 53. First drive motor; 54. Second drive motor; 60. Mounting part; 61. First vent; 62. First mounting cavity; 63. Second vent; 64. Second mounting cavity; 65. Connecting cavity; 651. First accommodating space; 652. Second accommodating space; 66. First mounting member; 661. First flange; 67. Second mounting member; 671. Second flange.

DETAILED DESCRIPTION

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

The present invention provides an air conditioner indoor unit, please refer to Figures 1 to 10, including a cooling and heating device 10 and a fresh air device 20 arranged below the cooling and heating device 10, the fresh air device 20 including: a fresh air shell 30, a fresh air channel 31 and a dirty air channel 32 are arranged in the fresh air shell 30, a fresh air inlet 311 and a fresh air outlet 312 connected to the fresh air channel 31, and a dirty air inlet 321 and a dirty air outlet 322 connected to the dirty air channel 32 are arranged on the fresh air shell 30; a baffle device 50, the baffle device 50 is located on the outside of the fresh air inlet 311 and the dirty air outlet 322, the baffle device 50 has a first working state that connects the fresh air inlet 311 and the dirty air outlet 322, a second working state that separates the fresh air inlet 311 and the dirty air outlet 322, and a third working state that blocks the fresh air inlet 311 and opens the dirty air outlet 322.

The air conditioner indoor unit of the present invention can realize the conversion of the fresh air device 20 in three working states by setting the baffle device 50. When the baffle device 50 is in the first working state, the indoor air returns to the room after passing through the dirty air channel 32 and the fresh air channel 31 in sequence; when the baffle device 50 is in the second working state, the fresh air inlet 311 and the dirty air outlet 322 are all opened, and the outdoor air enters the fresh air channel from the fresh air inlet 311 and flows into the room, and the indoor air passes through the dirty air channel 32 and returns to the outside through the dirty air outlet 322; when the baffle device 50 is in the third working state, the indoor air passes through the dirty air channel 32 and flows into the outside through the dirty air outlet 322. Such a setting can enable the fresh air device to convert different working states under different indoor environments, so as to improve the indoor air quality, meet the needs of users, and improve the comfort.

Among them, the fresh air device 20 of the present invention has health functions and functions of switching working states, including but not limited to removing dust, removing formaldehyde, reducing carbon dioxide content, removing odor, increasing negative ions, increasing oxygen content, etc.

In this embodiment, as shown in Figures 6 to 10, the baffle device 50 includes a fresh air deflector 51 and a dirty air deflector 52. The fresh air deflector 51 can be swingably disposed on the outside of the fresh air inlet 311 to block or avoid the fresh air inlet 311, and the dirty air deflector 52 can be swingably disposed on the outside of the dirty air outlet 322 to block or avoid the dirty air outlet 322, so that the baffle device 50 is located in a corresponding working state by adjusting the positions of the fresh air deflector 51 and the dirty air deflector 52.

In order to install the fresh air deflector 51 and the dirty air deflector 52, as shown in Figure 6, a mounting portion 60 is provided on the outer side of the fresh air inlet 311 and the dirty air outlet 322, and the mounting portion 60 has a first vent 61 and a second vent 63, and a first mounting cavity 62 for connecting the first vent 61 and the fresh air inlet 311 and a second mounting cavity 64 for connecting the second vent 63 and the dirty air outlet 322 are provided in the mounting portion 60; the first mounting cavity 62 and the second mounting cavity 64 are connected through a connecting cavity 65, and when the baffle device 50 is in the second working state, at least a part of the baffle device 50 is located in the connecting cavity 65 to separate the first mounting cavity 62 and the second mounting cavity 64.

In specific implementation, as shown in Figures 6 to 10, the baffle device 50 includes a fresh air deflector 51, which is rotatably arranged in the first installation cavity 62 and the connecting cavity 65. The fresh air deflector 51 has a first position blocking between the first installation cavity 62 and the connecting cavity 65 and a second position opposite to the fresh air inlet 311 to block the fresh air intake.

In a specific implementation, as shown in Figures 6 to 10, the baffle device 50 includes a dirty wind deflector 52, which is rotatably disposed in the second mounting cavity 64 and the connecting cavity 65, and the dirty wind deflector 52 has a third position blocking between the second mounting cavity 64 and the connecting cavity 65 and a fourth position opposite to the dirty air outlet 322 to block the outlet of dirty air.

During operation, when the fresh air deflector 51 rotates to the second position and the dirty air deflector 52 rotates to the fourth position, the first installation cavity 62 and the second installation cavity 64 are closed, and the connecting cavity 65 is opened, so that the baffle device is in the first working state; when the fresh air deflector 51 rotates to the first position and the dirty air deflector 52 rotates to the third position, the first installation cavity 62 and the second installation cavity 64 are opened, and the connecting cavity 65 is closed, so that the baffle device is in the second working state; when the fresh air deflector 51 rotates to the second position and the dirty air deflector 52 rotates to the third position, the second installation cavity 64 is opened, and the first installation cavity 62 and the connecting cavity 65 are closed, so that the baffle device is in the third working state.

In a specific implementation, as shown in FIG. 6 , the mounting portion 60 has a first mounting member 66 , which is located between the first vent 61 and the second vent 63 , and the fresh air deflector 51 and the dirty air deflector 52 are rotatably disposed on opposite sides of the first mounting member 66 .

In a specific implementation, as shown in FIG6 , the mounting portion 60 further includes a second mounting member 67, and a connecting cavity 65 is formed between the first mounting member 66 and the second mounting member 67. The connecting cavity 65 includes a first accommodating space 651 and a second accommodating space 652 that are relatively arranged, so that the fresh air deflector 51 is located in the first accommodating space 651 when in the first position, and the dirty air deflector is located in the second accommodating space 652 when in the third position.

In specific implementation, as shown in Figure 8, the first mounting member 66 has a first flange 661, and the second mounting member 67 has a second flange 671. The first flange 661 and the second flange 671 are arranged opposite to each other and are both located between the first accommodating space 651 and the second accommodating space 652; when the fresh air deflector 51 rotates to the first position, the fresh air deflector 51 abuts against the first flange 661 and the second flange 671 to separate the first mounting cavity 62 from the connecting cavity 65; when the dirty air deflector 52 rotates to the third position, the dirty air deflector 52 abuts against the first flange 661 and the second flange 671 to separate the second mounting cavity 64 from the connecting cavity 65.

In order to provide power to the fresh air deflector 51, as shown in Figure 7, the baffle device 50 also includes a first drive motor 53, which is arranged on the mounting portion 60 and is drivingly connected to the fresh air deflector 51 to drive the fresh air deflector 51 to rotate between the first position and the second position.

During specific implementation, the first driving motor 53 is disposed on the mounting portion 60 and is drivingly connected to the upper end of the fresh air deflector 51 .

In order to provide power to the dirty wind deflector 52, as shown in FIG. 7, the baffle device 50 further includes a second drive motor 54, which is disposed on the mounting portion 60 and is drivingly connected to the dirty wind deflector 52 to drive the dirty wind deflector 52 to rotate between the third position and the fourth position.

In a specific implementation, the second driving motor 54 is disposed on the mounting portion 60 and is drivingly connected to the lower end of the dirty air deflector 52 .

During specific implementation, the first drive motor 53 is fixed to the mounting part by two screws. One end of the fresh air deflector 51 is a structure that matches the offset of the first drive motor, and the other end is a cylinder (i.e., a rotating shaft). The rotating shaft of the fresh air deflector 51 and the rotating shaft of the first drive motor are located on the same axis.

During specific implementation, the second drive motor 54 is fixed to the mounting portion by two screws. One end of the dirty wind deflector 52 is a structure that matches the offset of the second drive motor, and the other end is a cylinder (i.e., a rotating shaft). The rotating shaft of the dirty wind deflector 52 and the rotating shaft of the second drive motor are located on the same axis.

In this embodiment, as shown in FIGS. 3 to 5 , the fresh air device 20 further includes a heat exchange core 40, which is disposed in the fresh air housing 30, and is connected to both the fresh air passage 31 and the dirty air passage 32, so that the fresh air in the fresh air passage 31 and the dirty air in the dirty air passage 32 can exchange heat in the heat exchange core 40. The arrangement of the heat exchange core 40 allows the fresh air and the dirty air to exchange energy through the heat exchange core 40, recover energy, and reduce energy loss.

In this embodiment, as shown in FIG3 , the fresh air device 20 includes a first filter 22, which is disposed on the heat exchange core 40 and between the heat exchange core 40 and the fresh air inlet 311. Such a configuration can filter out dust and remove odors, thereby preventing dust and other particles from entering the heat exchange core 40 and causing the heat exchange core 40 to be blocked.

Preferably, the first filter 22 is a filter screen.

In this embodiment, as shown in FIG. 3 , the fresh air device 20 includes a third filter 24 , and the third filter 24 is disposed between the first filter 22 and the fresh air inlet 311 .

Preferably, the third filter 24 is an activated carbon filter.

In this embodiment, as shown in FIG3 , the fresh air device 20 includes a second filter 23, which is disposed on the heat exchange core 40 and between the heat exchange core 40 and the fresh air outlet 312. Such a configuration can filter out dust and remove odors, thereby preventing dust and other particles from entering the heat exchange core 40 and causing the heat exchange core 40 to be blocked.

Preferably, the second filter 23 is a filter screen.

In this embodiment, as shown in FIG4 , the fresh air housing 30 is formed by splicing a plurality of wall panels, and at least two wall panels are provided with fresh air outlets 312, so that the fresh air after heat exchange in the heat exchange core 40 flows into the room through the fresh air outlets 312. Such a configuration increases the air volume and effectively improves the exchange speed between fresh air and polluted air.

The air conditioner indoor unit of the present invention has the following functions:

(1) Fresh air function;

(2) Eliminate pollution and purify the air;

(3) Energy saving and heat recovery functions.

The inventive points of the present invention are:

(1) The indoor unit of the air conditioner with circulation control function is adjusted to the external circulation mode to introduce fresh air from outside into the room to replace the turbid air in the room;

(2) The indoor unit of the air conditioner with circulation control function is adjusted to the internal circulation mode to purify the turbid air in the room (remove formaldehyde, dust, carbon dioxide, and increase oxygen) to improve the air quality in the room;

(3) The indoor unit of the air conditioner with circulation control function is adjusted to the single exhaust mode. In certain circumstances, when full heat exchange cannot be carried out, only the indoor air is discharged to the outside.

The beneficial effects of the air conditioner indoor unit of the present invention are:

(1) Increases indoor oxygen content and reduces indoor carbon dioxide and other gas contents that affect human health;

(2) Solved the problem of indoor air pollution that cannot be purified;

(3) In certain circumstances, only the exhaust function is turned on.

The present invention further provides an air conditioner, comprising an air conditioner indoor unit and an air conditioner indoor unit connected to the air conditioner indoor unit by a pipeline, wherein the air conditioner indoor unit is the air conditioner indoor unit in the above embodiment.

The working process of the air conditioner indoor unit of the present invention:

1. Outdoor fresh air enters indoor ventilation (i.e., external circulation mode): the first drive motor 53 and the second drive motor 54 drive the fresh air deflector 51 and the dirty air deflector 52 to be in the second working state, and the outdoor air enters the fresh air channel 31 from the fresh air inlet 311, and is coarsely filtered through the first filter 22 to filter out dust and remove odor, and prevent dust and other particulate matter from entering the heat exchange core 40 and causing blockage of the heat exchange core 40, and then passes through the third filter 24, enters the heat exchange core along the fresh air channel, passes through the third filter 24, passes through the centrifugal fan blades, and then passes through the fresh air outlet 312.

2. Indoor air is internally circulated and purified: the first drive motor 53 and the second drive motor 54 drive the fresh air deflector 51 and the dirty air deflector 52 to be in the first working state. The indoor air enters the air duct from the dirty air inlet 321, reaches the installation part along the air duct, and enters the fresh air channel again. It is coarsely filtered through the first filter 22 to filter out dust and remove odors, and prevent dust and other particulate matter from entering the heat exchange core 40 and causing blockage of the heat exchange core 40. It then passes through the third filter 24, enters the heat exchange core along the fresh air channel, passes through the third filter 24, passes through the centrifugal fan blades, and then passes through the fresh air outlet 312.

3. Indoor air is discharged outdoors separately: the first drive motor 53 and the second drive motor 54 drive the fresh air deflector 51 and the dirty air deflector 52 to be in the third working state, the fresh air deflector 51 is in the closed position, and the indoor air enters the air duct from the dirty air inlet 321, reaches the installation part along the air duct, and is discharged outdoors through the fresh air outlet 312.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

The air conditioner indoor unit of the present invention can realize the conversion of the fresh air device 20 in three working states by setting the baffle device 50. When the baffle device 50 is in the first working state, the indoor air returns to the room after passing through the dirty air channel 32 and the fresh air channel 31 in sequence; when the baffle device 50 is in the second working state, the fresh air inlet 311 and the dirty air outlet 322 are all opened, and the outdoor air enters the fresh air channel from the fresh air inlet 311 and flows into the room, and the indoor air passes through the dirty air channel 32 and returns to the outside through the dirty air outlet 322; when the baffle device 50 is in the third working state, the indoor air passes through the dirty air channel 32 and flows into the outside through the dirty air outlet 322. Such a setting can enable the fresh air device to convert different working states under different indoor environments, so as to improve the indoor air quality, meet the needs of users, and improve the comfort.

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

Claims (9)

1. An air conditioner indoor unit, comprising a cooling and heating device (10) and a fresh air device (20) arranged below the cooling and heating device (10), characterized in that the fresh air device (20) comprises: A fresh air housing (30), wherein a fresh air channel (31) and a dirty air channel (32) are arranged in the fresh air housing (30), and the fresh air housing (30) is provided with a fresh air inlet (311) and a fresh air outlet (312) in communication with the fresh air channel (31), and a dirty air inlet (321) and a dirty air outlet (322) in communication with the dirty air channel (32); A baffle device (50), the baffle device (50) being located outside the fresh air inlet (311) and the dirty air outlet (322), the baffle device (50) having a first working state in which the fresh air inlet (311) and the dirty air outlet (322) are connected, a second working state in which the fresh air inlet (311) and the dirty air outlet (322) are separated, and a third working state in which the fresh air inlet (311) is blocked and the dirty air outlet (322) is opened; the baffle device (50) ) comprises a fresh air deflector (51) and a dirty air deflector (52), wherein the fresh air deflector (51) is swingably arranged on the outside of the fresh air inlet (311) to block or avoid the fresh air inlet (311), and the dirty air deflector (52) is swingably arranged on the outside of the dirty air outlet (322) to block or avoid the dirty air outlet (322), so that the baffle device (50) is located in a corresponding working state by adjusting the positions of the fresh air deflector (51) and the dirty air deflector (52); The mounting portion (60) is arranged on the outer sides of the fresh air inlet (311) and the dirty air outlet (322), and the mounting portion (60) comprises a first mounting cavity (62) connected to the fresh air inlet (311) and a second mounting cavity (64) connected to the dirty air outlet (322); the first mounting cavity (62) and the second mounting cavity (64) are connected via a connecting cavity (65); when the baffle device (50) is in the second working state, at least a portion of the baffle device (50) is located in the connecting cavity (65) to separate the first mounting cavity (62) and the second mounting cavity (64). 2. The air conditioner indoor unit according to claim 1 is characterized in that the mounting portion (60) has a first vent (61) and a second vent (63), the first mounting cavity (62) is used to connect the first vent (61) and the fresh air inlet (311), and the second mounting cavity (64) is used to connect the second vent (63) and the dirty air outlet (322). 3. The air conditioner indoor unit according to claim 2, characterized in that the baffle device (50) comprises: A fresh air deflector (51) is rotatably arranged in the first installation cavity (62) and the connecting cavity (65), and the fresh air deflector (51) has a first position shielding between the first installation cavity (62) and the connecting cavity (65) and a second position opposite to the fresh air inlet (311) to block the fresh air intake. 4. The air conditioner indoor unit according to claim 3, characterized in that the baffle device (50) comprises: A dirty air deflector (52) is rotatably disposed in the second mounting cavity (64) and the connecting cavity (65), the dirty air deflector (52) having a third position shielding between the second mounting cavity (64) and the connecting cavity (65) and a fourth position opposite to the dirty air outlet (322) to block the discharge of dirty air. 5. The air conditioner indoor unit according to claim 4 is characterized in that the mounting portion (60) has a first mounting member (66), the first mounting member (66) is located between the first vent (61) and the second vent (63), and the fresh air deflector (51) and the dirty air deflector (52) are respectively rotatably arranged on opposite sides of the first mounting member (66). 6. The air conditioner indoor unit according to claim 5 is characterized in that the mounting portion (60) further comprises a second mounting member (67), the connecting cavity (65) is formed between the first mounting member (66) and the second mounting member (67), the connecting cavity (65) comprises a first accommodating space (651) and a second accommodating space (652) which are arranged opposite to each other, so that the fresh air deflector (51) is located in the first accommodating space (651) when in the first position, and the dirty air deflector is located in the second accommodating space (652) when in the third position. 7. The air conditioner indoor unit according to claim 6 is characterized in that the first mounting member (66) has a first flange (661), the second mounting member (67) has a second flange (671), the first flange (661) and the second flange (671) are arranged opposite to each other and are both located between the first accommodating space (651) and the second accommodating space (652); when the fresh air deflector (51) rotates to the first position, the fresh air deflector (51) abuts against the first flange (661) and the second flange (671) to separate the first mounting cavity (62) from the connecting cavity (65); when the dirty air deflector (52) rotates to the third position, the dirty air deflector (52) abuts against the first flange (661) and the second flange (671) to separate the second mounting cavity (64) from the connecting cavity (65). 8. The air conditioner indoor unit according to claim 3, characterized in that the baffle device (50) further comprises: A first driving motor (53) is arranged on the mounting portion (60) and is drivingly connected to the fresh air deflector (51) to drive the fresh air deflector (51) to rotate between the first position and the second position. 9. The air conditioner indoor unit according to claim 4, characterized in that the baffle device (50) further comprises: A second drive motor (54) is disposed on the mounting portion (60) and is drivingly connected to the dirty air deflector plate (52) to drive the dirty air deflector plate (52) to rotate between the third position and the fourth position.