CN215909226U - Indoor unit and air conditioner with same - Google Patents

Abstract

The utility model provides an indoor unit and an air conditioner with the same, wherein the indoor unit comprises: the shell is provided with an upper air inlet and a lower air inlet, and an auxiliary air inlet is also formed between the upper air inlet and the lower air inlet; the evaporator is arranged in the shell to divide the shell into a first heat exchange channel and a second heat exchange channel; an opening and closing assembly having an open position and a closed position; when the opening and closing assembly is located at the opening position, one of the first heat exchange channel and the second heat exchange channel is communicated with the outside through the auxiliary air opening, and when the opening and closing assembly is located at the closing position, the auxiliary air opening is closed by the opening and closing assembly. By adopting the technical scheme, the air inlet volume of the indoor unit is increased by arranging the auxiliary air opening, and the refrigerating or heating effect of the indoor unit is effectively improved.

Description

Indoor unit and air conditioner with same

Technical Field

The utility model relates to the technical field of air conditioner equipment, in particular to an indoor unit and an air conditioner with the indoor unit.

Background

The wall-mounted air conditioner has the air outlet form from top to bottom, but the indoor unit of the wall-mounted air conditioner is limited by the integral structure of the indoor unit, the area of an air inlet and the area of an air outlet of the indoor unit are both smaller, and meanwhile, because the air channel distance between the air inlet and the air outlet is long, the heat exchanger between the air inlet and the air outlet is far away from the cross-flow fan blade, the integral heat exchange efficiency of the wall-mounted air conditioner with the top and the bottom air outlet in the prior art is low, the refrigerating or heating effect is poor, and the power consumption is large due to the above factors.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an indoor unit and an air conditioner with the indoor unit, and aims to solve the problem that the air conditioner in the prior art is poor in refrigerating or heating effect.

In order to achieve the above object, according to one aspect of the present invention, there is provided an indoor unit including: the shell is provided with an upper air inlet and a lower air inlet, and an auxiliary air inlet is also formed between the upper air inlet and the lower air inlet; the evaporator is arranged in the shell to divide the shell into a first heat exchange channel and a second heat exchange channel; an opening and closing assembly having an open position and a closed position; when the opening and closing assembly is located at the opening position, one of the first heat exchange channel and the second heat exchange channel is communicated with the outside through the auxiliary air opening, and when the opening and closing assembly is located at the closing position, the auxiliary air opening is closed by the opening and closing assembly.

Further, the auxiliary air inlet comprises a first air inlet, the opening and closing assembly comprises a first opening and closing assembly, the first opening and closing assembly is provided with a first opening position and a first closing position, when the first opening and closing assembly is located at the first opening position, the first heat exchange channel is communicated with outside air flow through the first air inlet, and when the first opening and closing assembly is located at the first closing position, the first opening and closing assembly closes the first air inlet.

Further, the auxiliary air inlet further comprises a second air inlet, the opening and closing assembly further comprises a second opening and closing assembly, the second opening and closing assembly is provided with a second opening position and a second closing position, when the second opening and closing assembly is located at the second opening position, the second heat exchange channel is communicated with outside air flow through the second air inlet, and when the second opening and closing assembly is located at the second closing position, the second opening and closing assembly closes the second air inlet.

Furthermore, the first air openings are multiple, the first air openings are respectively formed in the opposite side walls of the shell, and/or the second air openings are multiple, and the first air openings are respectively formed in the opposite side walls of the shell.

Furthermore, the first air opening and the second air opening are arranged at intervals along the height direction of the indoor unit, the minimum distance between the first air opening and the second air opening is L1, and L1 is larger than or equal to 165mm and smaller than or equal to 175 mm.

Furthermore, a first communicating channel is formed between the first air opening and the first heat exchange channel, and a second communicating channel is formed between the second air opening and the second heat exchange channel.

Further, the maximum width of the first communicating channel or the second communicating channel is L2, wherein L2 is 16mm ≦ 26 mm.

Further, at least one of the first communication channel and the second communication channel is gradually extended toward the bottom side of the housing along the length direction of the housing.

Further, the area of the cross section of at least one of the first communication passage and the second communication passage is equally set along the length direction of the housing.

Further, an included angle formed by at least one side wall of the first communication channel and the horizontal plane is equal to an included angle formed by at least one side wall of the second communication channel and the horizontal plane.

Furthermore, the first communicating channel comprises a first side wall and a second side wall which are oppositely arranged, the second communicating channel comprises a third side wall and a fourth side wall which are oppositely arranged, and included angles between planes of the first side wall, the second side wall, the third side wall and the fourth side wall and a horizontal plane are equal.

Further, the first air opening is one of a square hole, a circular hole and a diamond hole, and/or the second air opening is one of a square hole, a circular hole and a diamond hole.

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

By applying the technical scheme of the utility model, the indoor unit is provided with the shell, the shell is provided with the upper air inlet and the lower air inlet, the auxiliary air inlet is arranged between the upper air inlet and the lower air inlet, when the opening and closing component is controlled to be positioned at the opening position, one of the first heat exchange channel and the second heat exchange channel is communicated with outside air flow through the auxiliary air inlet, the integral area of the air inlet of the shell of the indoor unit is increased, the air inlet amount of the first heat exchange channel or the second heat exchange channel is increased, and the heat exchange efficiency of the indoor unit is improved. By adopting the technical scheme, the air inlet volume of the indoor unit is increased by arranging the auxiliary air opening, and the refrigerating or heating effect of the indoor unit is effectively improved.

Drawings

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

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

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

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

FIG. 4 shows a schematic cross-sectional view at A-A in FIG. 3;

FIG. 5 shows a schematic cross-sectional view at B-B in FIG. 4;

figure 6 shows a schematic view of a fourth embodiment of the indoor unit according to the utility model;

figure 7 shows a schematic view of the structure of a fifth embodiment of the indoor unit according to the utility model;

figure 8 shows a schematic view of the construction of a sixth embodiment of the indoor unit according to the utility model.

Wherein the figures include the following reference numerals:

1. a housing; 2. an air inlet; 3. a lower tuyere;

10. a first fan section;

20. a second fan section;

30. an evaporator;

40. a first heat exchange channel; 41. a first tuyere; 42. a first opening and closing member; 43. a first communicating passage; 431. a first side wall; 432. a second side wall;

50. a second heat exchange channel; 51. a second tuyere; 52. a second opening and closing member; 53. a second communicating passage; 531. a third side wall; 532. a fourth side wall;

l1, minimum distance between first tuyere and second tuyere;

l2, the maximum width of the first communication passage or the second communication passage.

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.

Referring to fig. 1 to 8, according to an embodiment of the present application, an indoor unit is provided.

Specifically, the indoor unit includes a casing 1, an evaporator 30, and an opening and closing unit. The shell 1 is provided with an upper air inlet 2 and a lower air inlet 3, and an auxiliary air inlet is further formed between the upper air inlet 2 and the lower air inlet 3 of the shell 1. The evaporator 30 is disposed in the case 1 to divide the case 1 into a first heat exchange passage 40 and a second heat exchange passage 50. The opening and closing assembly has an open position and a closed position. Wherein, when the opening and closing assembly is located at the open position, one of the first heat exchange passage 40 and the second heat exchange passage 50 is communicated with the outside through the auxiliary tuyere. When the opening and closing assembly is located at the closing position, the opening and closing assembly closes the auxiliary air opening.

By applying the technical scheme of the utility model, the indoor unit is provided with the shell 1, the shell 1 is provided with the upper air inlet 2 and the lower air inlet 3, the auxiliary air inlet is arranged between the upper air inlet 2 and the lower air inlet 3, when the opening and closing assembly is controlled to be positioned at the opening position, one of the first heat exchange channel 40 and the second heat exchange channel 50 is communicated with outside air flow through the auxiliary air inlet, the integral area of the air inlet of the shell 1 of the indoor unit is increased, the air inlet amount of the first heat exchange channel 40 or the second heat exchange channel 50 is increased, the heat exchange efficiency of the evaporator 30 is improved, and further the heat exchange efficiency of the indoor unit is improved. By adopting the technical scheme, the air inlet volume of the indoor unit is increased by arranging the auxiliary air opening, and the refrigerating or heating effect of the indoor unit is effectively improved.

As shown in fig. 3 and 6, the auxiliary tuyere includes a first tuyere 41. The opening and closing assembly includes a first opening and closing assembly 42. The first opening and closing assembly 42 has a first open position and a first closed position. When the first opening and closing assembly 42 is located at the first opening position, the first heat exchange passage 40 is in airflow communication with the outside through the first air opening 41. When the first opening and closing member 42 is located at the first closing position, the first opening and closing member 42 closes the first air port 41. The first opening and closing assembly 42 can control the first air opening 41 to be located at different positions, so as to control whether the first heat exchange channel 40 is communicated with the outside air flow, and further control the air intake of the indoor unit.

As shown in fig. 3 and 7, the auxiliary tuyere further includes a second tuyere 51. The opening and closing assembly further includes a second opening and closing assembly 52. The second opening and closing member 52 has a second open position and a second closed position. When the second opening and closing member 52 is located at the second opening position, the second heat exchanging channel 50 is in air flow communication with the outside through the second air opening 51. When the second opening and closing member 52 is located at the second closing position, the second opening and closing member 52 closes the second tuyere 51. The second opening and closing component 52 can control the first air inlet 41 to be located at different positions, so as to control whether the second heat exchange channel 50 is communicated with the outside air flow, and further control the air intake of the indoor unit.

Specifically, the first tuyere 41 is plural. The first air ports 41 are opened on opposite side walls of the casing 1, respectively. The second tuyere 51 is plural. The first air ports 41 are opened on opposite side walls of the casing 1, respectively. The first air port 41 and the second air port 51 are provided in plurality, so that the air intake of the indoor unit can be further increased, the heat exchange efficiency of the evaporator can be improved, and the heating or cooling effect can be improved. The arrangement of the first air opening 41 and the second air opening 51 on the opposite side walls of the casing 1 is beneficial to the realization of the surrounding air intake of the indoor unit, and of course, the first air opening 41 and the second air opening 51 can also be arranged on the opposite front and back surfaces of the casing 1.

As shown in fig. 8, the first tuyere 41 and the second tuyere 51 are arranged at an interval in the height direction of the indoor unit, and the minimum distance between the first tuyere 41 and the second tuyere 51 is L1. Wherein, L1 is more than or equal to 165mm and less than or equal to 175 mm. The arrangement is convenient for arranging the evaporator 30 between the first air opening 41 and the second air opening 51, and the air inlet quantity can be increased through the auxiliary air opening when the indoor unit blows air upwards or downwards. Preferably, L1 is set at 170 mm.

Further, a first communication passage 43 is formed between the first tuyere 41 and the first heat exchange passage 40. A second communication passage 53 is formed between the second tuyere 51 and the second heat exchanging passage 50. The air flow entering from the first air inlet 41 is merged with the air flow entering from the upper air inlet 2 along the first communication channel 43 and enters the evaporator 30 for heat exchange, and the first communication channel 43 plays a role of guiding the air flow. The air flow entering from the second tuyere 51 is merged with the air flow entering from the lower tuyere 3 along the second communication channel 53 and then enters the evaporator 30 for heat exchange, and the second communication channel 53 plays a role of guiding the flow direction of the air flow.

As shown in fig. 4, the maximum width of the first communication passage 43 or the second communication passage 53 is L2. Wherein L2 is more than or equal to 16mm and less than or equal to 26 mm. The arrangement is such that the first communication passage 43 or the second communication passage 53 has a suitable air intake efficiency. Preferably, L2 is set at 21 mm.

As shown in fig. 3, at least one of the first communication passage 43 and the second communication passage 53 is provided to extend gradually toward the bottom side of the housing 1 in the longitudinal direction of the housing 1. Indoor set is in the course of the work, probably produces the condensation phenomenon in first communicating channel 43 and the second communicating channel 53, through setting up position and direction in first communicating channel 43 and the second communicating channel 53 ingeniously, can avoid the condensation water that produces to flow outside the indoor set, has promoted user's use experience effectively.

Further, the area of the cross section of at least one of the first communication passage 43 and the second communication passage 53 is equally set along the length direction of the housing 1. The cross section areas are arranged in the same way, so that the smooth profile of the channel can be ensured, no protrusion is generated, and the air flow circulation and the condensed water backflow are facilitated.

An angle formed by at least one side wall of the first communicating channel 43 and a horizontal plane is set equal to an angle formed by at least one side wall of the second communicating channel 53 and a horizontal plane. The arrangement is such that the first and second communication passages 43, 53 have the same contour profile, which facilitates the processing of the housing 1.

As shown in fig. 3, the first communicating path 43 includes a first side wall 431 and a second side wall 432 which are oppositely disposed. The second communicating path 53 includes a third side wall 531 and a fourth side wall 532 disposed opposite to each other. The included angles between the planes of the first side wall 431, the second side wall 432, the third side wall 531 and the fourth side wall 532 and the horizontal plane are all equal. The arrangement makes the first and second communication passages 43, 53 simple in structure, and the introduced air flow is smooth and uniform in direction.

The first air port 41 is one of a square hole, a circular hole, and a diamond hole. The second tuyere 51 is one of a square hole, a circular hole, and a diamond hole. The first tuyere 41 and the second tuyere 51 may be holes of various forms, and the first communicating path 43 and the second communicating path 53 may be modified accordingly.

The technical scheme of this application can also be used to air conditioning equipment technical field, according to the on the other hand of this application promptly, still provides an air conditioner, and the air conditioner includes indoor set, and indoor set is the indoor set in above-mentioned embodiment.

According to another aspect of the present application, there is also provided a method for controlling an indoor unit, where the method is used to control the indoor unit in the above embodiments, and includes the following steps: the indoor unit has a heating mode, when the indoor unit is in the heating mode, the upper air inlet 2 and the lower air inlet 3 are controlled to be in an open state, the first fan part 10 is controlled to be in a first working state, the second fan part 20 is controlled to be in a second working state, and the first opening and closing component 42 is controlled to be in the first open position, so that outside air enters the shell 1 through the first air inlet 41 and the upper air inlet 2 to exchange heat with the evaporator 30, and then is blown out from the lower air inlet 3. The arrangement enables the air inlet volume of the indoor unit to be increased through the first air port 41 in the heating process of the indoor unit, and the air flow is blown out from the lower air port 3 after heat exchange through the evaporator 30, so that the carpet type heating effect is realized, and the use experience of a user is effectively improved.

When the first fan unit 10 is in the first working state, negative pressure is generated at the air inlet of the first fan unit 10, and the air flow outside the indoor unit is sucked into the air inlet 2. When the second fan unit 20 is in the second working state, the air in the second heat exchange channel 50 is pressurized by the second fan unit 20 and then discharged from the lower air inlet 3. The arrangement can improve the air inlet and outlet speed of the indoor unit, thereby effectively improving the refrigeration or heating effect of the indoor unit.

The indoor unit has a cooling mode. When the indoor unit is in the cooling mode, the upper air inlet 2 and the lower air inlet 3 are controlled to be in the open state, the first fan part 10 is controlled to be in the third working state, the second fan part 20 is controlled to be in the fourth working state, and the second air inlet 51 is controlled to be in the open position, so that the air flow entering through the second air inlet 51 and the lower air inlet 3 is blown out from the upper air inlet 2. The arrangement enables the air inlet volume of the indoor unit to be increased through the second air inlet 51 in the heating process of the indoor unit, and the air flow is blown out from the upper air inlet 2 after heat exchange through the evaporator 30, so that the shower type refrigeration effect is realized, cold air is prevented from directly blowing people, and the use experience of users is effectively improved.

When the second fan unit 20 is in the fourth operating state, negative pressure is generated at the air inlet of the second fan unit 20, and the air flow outside the indoor unit is sucked into the lower air inlet 3. When the first fan unit 10 is in the third working state, the airflow in the first heat exchange channel 40 is pressurized by the first fan unit 10 and then discharged from the upper air inlet 2. The arrangement can improve the air inlet and outlet speed of the indoor unit, thereby effectively improving the refrigeration or heating effect of the indoor unit.

Adopt the technical scheme of this application, provide the indoor set of the upper and lower air-out of multiplicable intake, the indoor set is provided with supplementary wind gap at last wind gap 2 and lower wind gap 3 between, can effectively promote the amount of wind of participating in the heat transfer of indoor set, further promotes APF, reduces the consumption of air conditioner. Wherein, the APF is the annual energy consumption efficiency of the air conditioner, and the higher the APF is, the more electricity is saved. Furthermore, the auxiliary air inlet can effectively promote the refrigerant flow at the end of the indoor evaporator 30 of the air conditioner while promoting the air intake of the indoor unit so as to improve the refrigeration and heating effects of the air conditioner, thereby reducing the refrigerant quantity outside the air conditioner, namely, transferring high-pressure refrigerant to the indoor side, effectively reducing the load pressure of an air conditioning system, avoiding the long-time high-load operation of the system and prolonging the service life of the air conditioner.

Specifically, the auxiliary air ports of the indoor unit start to be arranged at different positions of the shell 1, the technical effect that the indoor unit surrounds the air inlet can be achieved, energy consumption is saved, and meanwhile user experience is improved.

Fig. 1 shows an external view of an indoor unit according to the present invention. Fig. 2 is a side sectional view of an indoor unit according to the present invention, and fig. 2 shows relative positions of an evaporator 30, a fan unit, and an auxiliary air inlet. Under the condition of not considering the auxiliary air opening, when the indoor unit is an upper air outlet, the air flow enters the second heat exchange channel 50 from the lower air opening 3, and is blown out from the upper air opening 2 after heat exchange is carried out through the evaporator 30. When the indoor unit is in a lower air outlet state, airflow enters the first heat exchange channel 40 from the upper air inlet 2, exchanges heat through the evaporator 30, and is blown out from the lower air inlet 3.

Preferably, under the condition that the auxiliary air opening is needed to be used for increasing the air intake of the indoor unit, when the indoor unit of the air conditioner discharges air downwards, the first air opening 41 is opened, the second air opening 51 is closed, at this time, the first air opening 41 needs to be arranged above the evaporator 30, the inlet air increased by the first air opening 41 can effectively participate in the heat exchange process of the evaporator 30, and on the contrary, if the second air opening 51 is opened, the inlet air increased by the second air opening 51 cannot participate in the heat exchange process through the evaporator 30, so the first air opening 41 needs to be arranged at the upper end of the evaporator 30 when the indoor unit discharges air downwards.

Preferably, under the condition that the auxiliary air opening is needed to increase the air intake of the indoor unit, when the indoor unit of the air conditioner blows air upwards, the second air opening 51 is opened, the first air opening 41 is closed, the second air opening 51 needs to be arranged below the evaporator 30, and the air intake increased from the second air opening 51 can only effectively participate in the heat exchange process of the evaporator 30, on the contrary, if the first air opening 41 is opened at this time, the air intake increased from the first air opening 41 cannot participate in the heat exchange process through the evaporator 30, so the second air opening 51 needs to be arranged at the lower end of the evaporator 30 when the indoor unit blows air upwards.

The number of the auxiliary air ports shown in fig. 3 is 4, and the auxiliary air ports are respectively and symmetrically distributed on two sides of the shell 1, and 2 auxiliary air ports are respectively arranged at the upper end and the lower end of the shell 1. Of course, the number of the first tuyere 41 and the second tuyere 51 can be more, so as to improve the heat exchange efficiency of the indoor unit.

Preferably, the plane of the side wall of the first communication channel 43 or the second communication channel 53 forms an angle of at least 5 ° with the horizontal plane and extends downward into the first heat exchange channel 40 or the second heat exchange channel 50. The arrangement ensures that condensed water generated in the shell 1 can not flow out of the shell 1 of the indoor unit when the indoor unit operates in a refrigerating mode.

Further, when the air conditioner is an upward air outlet, the first air opening 41 at the upper end of the shell 1 is closed, the second air opening 51 at the lower end of the shell 1 is used for increasing air inlet, and the air quantity increased by the second air opening 51 can effectively participate in heat exchange. When the air conditioner is used for discharging air downwards, the first air opening 41 at the upper end of the shell 1 is opened to realize increased air inlet, the second air opening 51 at the lower end of the shell 1 is closed, and the air quantity entering from the first air opening 41 can effectively participate in heat exchange. The number of the auxiliary air ports can be set according to the actual situation, and is generally set to be an even number greater than four so as to ensure that the air inlet volume is large enough.

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 utility model 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 (13)

1. An indoor unit, comprising:

the air conditioner comprises a shell (1), wherein the shell (1) is provided with an upper air inlet (2) and a lower air inlet (3), and an auxiliary air inlet is further formed between the upper air inlet (2) and the lower air inlet (3) of the shell (1);

an evaporator (30), the evaporator (30) being disposed within the housing (1) to divide the housing (1) into a first heat exchange channel (40) and a second heat exchange channel (50);

an opening and closing assembly having an open position and a closed position;

when the opening and closing assembly is located at the opening position, one of the first heat exchange channel (40) and the second heat exchange channel (50) is communicated with the outside through the auxiliary air opening, and when the opening and closing assembly is located at the closing position, the opening and closing assembly closes the auxiliary air opening.

2. Indoor unit according to claim 1, characterized in that the auxiliary air opening comprises a first air opening (41), the opening and closing assembly comprises a first opening and closing assembly (42), the first opening and closing assembly (42) has a first opening position and a first closing position, when the first opening and closing assembly (42) is located at the first opening position, the first heat exchange duct (40) is in air flow communication with the outside through the first air opening (41), when the first opening and closing assembly (42) is located at the first closing position, the first opening and closing assembly (41) is closed by the first opening and closing assembly (42).

3. The indoor unit of claim 2, wherein the auxiliary air opening further comprises a second air opening (51), the opening and closing assembly further comprises a second opening and closing assembly (52), the second opening and closing assembly (52) has a second opening position and a second closing position, when the second opening and closing assembly (52) is located at the second opening position, the second heat exchange path (50) is communicated with the outside air through the second air opening (51), and when the second opening and closing assembly (52) is located at the second closing position, the second opening and closing assembly (52) closes the second air opening (51).

4. Indoor unit according to claim 3, characterized in that the first tuyere (41) is in plurality and the first tuyere (41) is in plurality opened in the opposite side wall of the casing (1), respectively, and/or in that the second tuyere (51) is in plurality and the first tuyere (41) is in plurality opened in the opposite side wall of the casing (1), respectively.

5. The indoor unit of claim 3, wherein the first and second ports (41, 51) are provided at intervals in a height direction of the indoor unit, and a minimum distance between the first and second ports (41, 51) is L1, wherein L1 is 165mm or more and 175mm or less.

6. The indoor unit according to claim 3,

a first communication channel (43) is formed between the first tuyere (41) and the first heat exchange channel (40), and a second communication channel (53) is formed between the second tuyere (51) and the second heat exchange channel (50).

7. Indoor unit according to claim 6, characterized in that the maximum width of the first communication channel (43) or the second communication channel (53) is L2, where 16mm L2 mm 26 mm.

8. The indoor unit of claim 6, wherein at least one of the first communication passage (43) and the second communication passage (53) is extended toward a bottom side of the casing (1) in a longitudinal direction of the casing (1).

9. Indoor unit according to claim 6, characterized in that the area of the cross section of at least one of the first and second communication channels (43, 53) is equally arranged along the length of the casing (1).

10. Indoor unit according to claim 6, characterized in that the angle formed by at least one side wall of the first communication channel (43) and the horizontal plane is arranged equal to the angle formed by at least one side wall of the second communication channel (53) and the horizontal plane.

11. The indoor unit of claim 10, wherein the first communication channel (43) comprises a first side wall (431) and a second side wall (432) which are oppositely arranged, the second communication channel (53) comprises a third side wall (531) and a fourth side wall (532) which are oppositely arranged, and included angles between the planes of the first side wall (431), the second side wall (432), the third side wall (531) and the fourth side wall (532) and a horizontal plane are equal.

12. Indoor unit according to claim 3, characterized in that the first tuyere (41) is one of a square hole, a circular hole, a diamond hole and/or the second tuyere (51) is one of a square hole, a circular hole, a diamond hole.

13. 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 12.

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