Indoor unit and air conditioner

Abstract

The invention provides an indoor unit and an air conditioner. The indoor unit comprises a shell. A fan; a filtering structure; the indoor unit has a first state that the air inlet of the draught fan communicates with the air opening through the filtering area, and further has a second state that the air outlet of the draught fan communicates with the air opening through the avoiding area. According to the indoor unit and the air conditioner, the avoiding area is arranged on the filtering structure, the fan air outlet of the fan can directly communicate with the air opening through the avoiding area, when the air opening serves as the air outlet, the filtering structure cannot hinder air outlet of the fan air outlet, and the air outlet effect of the indoor unit is guaranteed; and meanwhile, the filtering structure is further provided with a filtering area, so that the air inlet of the fan can only communicate with the air opening through the filtering area, and when the air opening serves as the air inlet, air must be filtered by the filtering area and can enter the indoor unit, so that the working reliability of the indoor unit is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, in particular to an indoor unit and an air conditioner. Background Art

[0002] In some related technologies, the indoor unit of the air conditioner adopts horizontal lateral air supply. In the heating mode, the heating hot air is blown out horizontally. Due to the low density of hot air, the hot air floats up, and the heat demand of people is 1.6 meters or below. The hot air is difficult to reach the human activity area, resulting in poor heating effect. In other related technologies, the downward air supply method is adopted. In the cooling mode, the cold air blows directly on the human body, which is less comfortable.

[0003] The prior art generally adopts the method of controlling the fan to reverse to achieve the reverse air outlet of the fan, so that the indoor unit can simultaneously achieve the purpose of horizontal air supply and vertical air supply. Since there are impurities such as dust in the air, it will affect the normal operation of the indoor unit after entering the indoor unit. It is necessary to set a filter structure at the air outlet of the indoor unit to filter the gas. However, the filter structure in the prior art cannot meet the air flow direction requirement of the indoor unit. In particular, when the air outlet of the filter structure is used as the air outlet, the filter structure will cause the problem of increased wind resistance of the indoor unit, which seriously affects the working efficiency of the indoor unit. Summary of the invention

[0004] In order to solve the technical problem in the prior art that the filtering structure cannot meet the requirements of the change of the airflow direction of the indoor unit and thus affects the working efficiency of the indoor unit, an indoor unit and an air conditioner are provided with an avoidance area on the filtering structure to avoid affecting the air outlet of the fan to improve the working efficiency.

[0005] An indoor unit, comprising:

[0006] A shell body, wherein an air outlet is provided on the shell body;

[0007] A fan, the fan being arranged in the housing, the fan having a fan air inlet and a fan air outlet;

[0008] A filter structure, wherein the filter structure is disposed between the housing and the fan, and the filter structure is provided with an avoidance area and a filter area;

[0009] The indoor unit has a first state in which the fan air inlet is connected to the air outlet through the filter area, and the indoor unit also has a second state in which the fan air outlet is connected to the air outlet through the avoidance area.

[0010] A connecting structure is provided between the fan outlet and the avoidance area; and / or the edge of the fan outlet is sealed and matched with the edge of the avoidance area.

[0011] The number of the fans is at least two, all the fans are arranged in parallel, and the avoidance areas correspond to the fans one by one.

[0012] The air inlet includes a first air inlet and a second air inlet, the fan air outlet includes a first air outlet and a second air outlet, the indoor unit has a first state in which the first air inlet takes in air and the second air outlet is connected with the second air outlet for air discharge, and the indoor unit also has a second state in which the second air inlet takes in air and the first air outlet is connected with the first air outlet for air discharge, the filtering structure is arranged between the first air inlet and the first air outlet, and the first air outlet is connected with the first air inlet through the avoidance area; and / or the filtering structure is arranged between the second air outlet and the second air outlet, and the second air outlet is connected with the second air outlet through the avoidance area.

[0013] The fan comprises:

[0014] A fixed volute, wherein the first air outlet and the second air outlet are provided on the fixed volute;

[0015] A movable volute, wherein the movable volute is movably disposed in the fixed volute, and the movable volute has a first working state of shielding the first air outlet and avoiding the second air outlet, and the movable volute also has a second working state of avoiding the first air outlet and shielding the second air outlet;

[0016] When the indoor unit is in the first state, the movable volute is in the first working state;

[0017] When the indoor unit is in the second state, the movable volute is in the second working state.

[0018] The fan further includes a baffle, which is movably disposed outside the fixed volute, and the baffle has a first shielding state located between the second air outlet and the fan air inlet, and the baffle also has a second shielding state located between the first air outlet and the fan air inlet;

[0019] When the indoor unit is in the first state, the baffle is in the first shielding state;

[0020] When the indoor unit is in the second state, the baffle is in the second shielding state.

[0021] The baffle is connected to the movable volute.

[0022] A matching structure is provided in the shell, and when the baffle is in the first shielding state or in the second shielding state, the baffle abuts against the matching structure.

[0023] The number of the fans is at least two, all the fans are arranged in parallel in the housing, and the baffle is arranged between two adjacent fans; and / or the baffle is arranged between the fan located at the end and the housing.

[0024] When the movable volute is in the first working state or in the second working state, the movable volute and a part of the fixed volute form a complete volute-shaped structure.

[0025] The first air outlet is arranged on the bottom wall of the shell, and the second air outlet is arranged on the side wall of the shell; the first air outlet is connected to the outside of the shell through the side wall of the shell, and the second air outlet is connected to the outside of the shell through the bottom wall of the shell.

[0026] An air conditioner comprises the indoor unit mentioned above.

[0027] The indoor unit and air conditioner provided by the present invention are provided with an avoidance area on the filtering structure, and the fan outlet of the fan can be directly connected with the air outlet through the avoidance area. When the air outlet is used as the air outlet, the filtering structure will not hinder the air outlet of the fan outlet, thereby ensuring the air outlet effect of the indoor unit. At the same time, the filtering structure also has a filtering area, so that the fan air inlet can only be connected with the air outlet through the filtering area. When the air outlet is used as the air inlet, the gas must be filtered in the filtering area before entering the indoor unit to ensure the working reliability of the indoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of an indoor unit provided by an embodiment of the present invention;

[0029] Figure 2 Another structural schematic diagram of an indoor unit provided by an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the structure of the filter structure of the indoor unit provided by an embodiment of the present invention;

[0031] Figure 4 Another structural schematic diagram of the filtering structure of the indoor unit provided by an embodiment of the present invention;

[0032] Figure 5 Another structural schematic diagram of the filtering structure of the indoor unit provided by an embodiment of the present invention;

[0033] Figure 6 A structural schematic diagram of an indoor unit provided by an embodiment of the present invention without a filtering structure and in a first state;

[0034] Figure 7 A schematic diagram of the structure of an indoor unit provided by an embodiment of the present invention without a filtering structure and in a second state;

[0035] Figure 8 A gas flow diagram of an indoor unit in a first state provided by an embodiment of the present invention;

[0036] Fig. 9 A gas flow diagram of an indoor unit in a second state provided by an embodiment of the present invention;

[0037] Fig.10 A schematic diagram of the structure of a fan of an indoor unit provided in an embodiment of the present invention;

[0038] Fig.11 A schematic diagram of the structure of a fixed volute and a movable volute of an indoor unit provided in an embodiment of the present invention;

[0039] Fig.12 A schematic diagram of the structure of a movable volute and a baffle of an indoor unit provided by an embodiment of the present invention;

[0040] Fig.13 A cross-sectional view of an indoor unit provided by an embodiment of the present invention when in a first state;

[0041] Fig.14 A cross-sectional view of an indoor unit provided by an embodiment of the present invention when in a second state;

[0042] In the figure:

[0043] 1. Shell; 2. Fan; 21. Fan air inlet; 3. Filter structure; 31. Avoidance area; 32. Filter area; 11. First air outlet; 12. Second air outlet; 22. First air outlet; 23. Second air outlet; 24. Fixed volute; 25. Movable volute; 4. Baffle. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The prior art generally controls the fan to reverse to achieve the reverse air outlet of the fan, so that the indoor unit can simultaneously achieve the purpose of horizontal and vertical air supply. Since there are impurities such as dust in the air, it will affect the normal operation of the indoor unit after entering the indoor unit. It is necessary to set a filter structure at the air outlet of the indoor unit to filter the gas. However, the filter structure in the prior art cannot meet the air flow direction requirements of the indoor unit. In particular, when there is an air outlet with a filter structure as the air outlet, the filter structure will cause the problem of increased wind resistance of the indoor unit, which seriously affects the working efficiency of the indoor unit. To this end, the present application provides a method such as Figures 1 to 14The indoor unit shown includes: a shell 1, on which an air outlet is provided; a fan 2, which is arranged in the shell 1 and has a fan air inlet 21 and a fan air outlet; a filtering structure 3, which is arranged between the shell 1 and the fan 2, and on which a avoidance area 31 and a filtering area 32 are provided; the indoor unit has a first state in which the fan air inlet 21 is connected to the air outlet via the filtering area 32, and the indoor unit also has a second state in which the fan air outlet is connected to the air outlet via the avoidance area 31. A avoidance area 31 is set on the filter structure 3, so that the fan outlet of the fan 2 can be directly connected to the air outlet through the avoidance area 31. When the air outlet is used as the air outlet, the filter structure 3 will not hinder the air outlet of the fan outlet, thereby ensuring the air outlet effect of the indoor unit. At the same time, the filter structure 3 also has a filter area 32, so that the fan air inlet 21 can only be connected to the air outlet through the filter area 32. When the air outlet is used as the air inlet, the gas must be filtered by the filter area 32 before entering the indoor unit to ensure the working reliability of the indoor unit. The filter structure 3 includes a frame and a filter net arranged on the frame. The filter net is not arranged at the frame corresponding to the avoidance area 31, and the filter net is arranged at the frame corresponding to the filter area 32. A notch can also be arranged on the frame, and a filter net is not arranged at the notch to form the avoidance area 31, and a filter net is arranged inside the frame to form the filter area 32.

[0050] Among them, a connecting structure is arranged between the fan outlet and the avoidance area 31, and the fan outlet and the avoidance area 31 are connected by the connecting structure, so that the airflow from the fan outlet can only flow to the air outlet through the avoidance area 31, thereby avoiding the problem that the airflow from the fan outlet flows through the filter area 32 and causes increased wind resistance, and the dust on the filter area 32 flows into the room through the air outlet, thereby ensuring the working efficiency and working reliability of the indoor unit.

[0051] Alternatively, the edge of the fan outlet is sealed with the edge of the avoidance area 31, that is, the fan outlet is directly connected and sealed with the avoidance area 31, so that the airflow from the fan outlet can only flow to the air outlet through the avoidance area 31, thereby avoiding the problem of increased wind resistance caused by the airflow from the fan outlet flowing through the filter area 32 and dust on the filter area 32 flowing into the room through the air outlet, thereby ensuring the working efficiency and reliability of the indoor unit.

[0052] like Figure 1As shown, the number of the fans 2 is at least two, all the fans 2 are arranged in parallel, and the avoidance areas 31 correspond to the fans 2 one by one, the blade rotation axes of all the fans 2 are located on the same straight line, the filtering structure 3 is located between the air outlet and all the fans 2, and the avoidance areas 31 corresponding to the fans 2 are set one by one, so that the fan outlet of each fan 2 can be connected with the air outlet through the corresponding avoidance area 31, and at the same time, the fan inlet 21 of all the fans 2 can only be connected with the air outlet through the filtering area 32, thereby ensuring the air outlet effect of all the fans 2, and then ensuring the working efficiency and working reliability of the indoor unit.

[0053] The air vent includes a first air vent 11 and a second air vent 12, and the fan air outlet includes a first air outlet 22 and a second air outlet 23. The indoor unit has a first state in which the first air vent 11 takes in air and the second air outlet 23 is connected with the second air vent 12 to discharge air. The indoor unit also has a second state in which the second air vent 12 takes in air and the first air outlet 22 is connected with the first air vent 11 to discharge air. The indoor unit makes the first air vent 11 discharge air or the second air vent 12 discharge air according to demand, thereby adjusting the air outlet direction of the indoor unit. When the indoor unit is in the first state, the first air vent 11 serves as an air inlet and the second air outlet 12 serves as an air outlet. The gas enters the shell 1 from the first air outlet 11 and flows to the fan air inlet 21, and then flows to the second air outlet 12 through the second air outlet 23 for discharge; when the indoor unit is in the second state, the first air outlet 11 serves as the air outlet, and the second air outlet 12 serves as the air inlet, and the gas enters the shell 1 from the second air outlet 12 and flows to the fan air inlet 21, and then flows to the first air outlet 11 for discharge through the first air outlet 22. The fan 2 controls the flow direction of the airflow by controlling the opening and closing states of the first air outlet 22 and the opening and closing states of the second air outlet 23, so that the air outlet of the fan 2 can match the air outlet direction of the indoor unit, thereby ensuring the air outlet effect of the indoor unit.

[0054] The filtering structure 3 is arranged between the first air port 11 and the first air outlet 22, and the first air outlet 22 is connected with the first air port 11 through the avoidance area 31. When the indoor unit is in the first state, the airflow of the first air port 11 can only flow to the fan air inlet 21 through the filtering area 32, and the second air outlet 23 of the fan 2 is connected with the second air port 12, thereby ensuring the air outlet efficiency of the fan 2 and the air outlet efficiency of the indoor unit. When the indoor unit is in the second state, the airflow of the second air port 12 flows to the fan air inlet 21, and then flows to the first air port 11 through the first air outlet 22 and the avoidance area 31 corresponding to the first air outlet 22 for air outlet, thereby reducing the fluid resistance between the first air outlet 22 and the first air port 11, thereby ensuring the reliability of gas filtering of the indoor unit in the first state and the reliability of air supply in the second state.

[0055] Alternatively, the filtering structure 3 is arranged between the second air outlet 23 and the second air outlet 12, and the second air outlet 23 is connected with the second air outlet 12 through the avoidance area 31. When the indoor unit is in the first state, the airflow of the first air outlet 11 flows to the fan air inlet 21, and the second air outlet 23 of the fan 2 is connected with the second air outlet 12 through the corresponding avoidance area 31, thereby reducing the fluid resistance between the second air outlet 23 and the second air outlet 12, thereby ensuring the air outlet efficiency of the fan 2 and the air outlet efficiency of the indoor unit. When the indoor unit is in the second state, the airflow of the second air outlet 12 can only flow to the fan air inlet 21 through the filtering area 32, and then flow to the first air outlet 11 through the first air outlet 22 for air outlet, thereby ensuring the air supply reliability of the indoor unit in the first state and the reliability of gas filtering in the second state.

[0056] Preferably, two filtering structures 3 are arranged in the shell 1, one filtering structure 3 is arranged between the first air port 11 and the first air outlet 22, the first air outlet 22 is connected with the first air port 11 through the avoidance area 31, and the other filtering structure 3 is arranged between the second air outlet 23 and the second air port 12, the second air outlet 23 is connected with the second air port 12 through the avoidance area 31. At this time, it can be ensured that the indoor unit has a good air supply effect and a good filtering effect in both the first state and the second state.

[0057] In order to achieve air discharge in different directions of the fan 2, the fan 2 includes: a fixed volute 24, on which the first air outlet 22 and the second air outlet 23 are arranged; a movable volute 25, which is movably arranged in the fixed volute 24, and the movable volute 25 has a first working state of shielding the first air outlet 22 and avoiding the second air outlet 23, and the movable volute 25 also has a second working state of avoiding the first air outlet 22 and shielding the second air outlet 23; when the indoor unit is in the first state, the movable volute 25 is in the first working state; when the indoor unit is in the second state, the movable volute 25 is in the second working state. By switching the state of the movable volute 25, the airflow of the fan 2 is controlled to be discharged from the first air outlet 22 or the second air outlet 23. When the movable volute 25 is in the first working state, the movable volute 25 covers the first air outlet 22, thereby opening the second air outlet 23, so that the gas entering from the fan air inlet 21 can be discharged through the second air outlet 23. When the movable volute 25 is in the second working state, the movable volute 25 covers the second air outlet 23, thereby opening the first air outlet 22, so that the gas entering from the fan air inlet 21 can be discharged through the first air outlet 22. The fan 2 can achieve different directions of air discharge according to the arrangement positions of the first air outlet 22 and the second air outlet 23, so as to achieve the purpose of adjusting the air outlet direction of the fan 2, and also enable the fan 2 to be adjusted according to the air supply direction requirements of the indoor unit to ensure the air supply effect of the indoor unit. Preferably, the fan 2 is a centrifugal fan, and the axis of the centrifugal fan is parallel to the horizontal plane.

[0058] The fan 2 also includes a baffle 4, which is movably arranged on the outside of the fixed volute 24, and the baffle 4 has a first shielding state located between the second air outlet 12 and the fan air inlet 21, and the baffle 4 also has a second shielding state located between the first air outlet 11 and the fan air inlet 21; the baffle 4 is used to switch the connection between the fan air inlet 21 and the first air outlet 11 or the connection between the fan air inlet 21 and the second air outlet 12, so as to avoid the gas from flowing directly through the outside of the fan 2, and ensure that the gas can only flow through the fan 2, thereby ensuring the air supply effect of the indoor unit.

[0059] When the indoor unit is in the first state, the baffle 4 is in the first shielding state, at this time, the baffle 4 closes the second air outlet 12 and the fan air inlet 21, and the airflow of the first air outlet 11 can flow smoothly to the fan air inlet 21, but cannot flow through the space between the fans 2 or the space between the fan 2 and the shell 1. At this time, the airflow in the fan 2 can only be discharged through the second air outlet 23, and flow to the second air outlet 12 through the corresponding avoidance area 31, so as to realize the air outlet of the second air outlet 12 of the indoor unit. At the same time, because the baffle 4 closes the second air outlet 12 and the fan air inlet 21, the airflow of the second air outlet 23 and the second air outlet 12 cannot be sucked into the fan air inlet 21, thereby ensuring the normal operation of the fan 2 and the working reliability of the indoor unit.

[0060] When the indoor unit is in the second state, the baffle 4 is in the second shielding state, at this time, the baffle 4 closes the first air outlet 11 and the fan air inlet 21, and the airflow of the second air outlet 12 can flow smoothly to the fan air inlet 21, but cannot flow through the space between the fans 2 or the space between the fan 2 and the shell 1. At this time, the airflow in the fan 2 can only be discharged through the first air outlet 22, and flow to the first air outlet 11 through the corresponding avoidance area 31, so as to realize the air outlet of the first air outlet 11 of the indoor unit. At the same time, because the baffle 4 closes the first air outlet 11 and the fan air inlet 21, the airflow of the first air outlet 22 and the first air outlet 11 cannot be sucked into the fan air inlet 21, thereby ensuring the normal operation of the fan 2 and the working reliability of the indoor unit.

[0061] Optionally, the baffle 4 is connected to the movable volute 25, and the baffle 4 and the movable volute 25 can move synchronously to ensure reliable switching of the indoor unit between the first state and the second state.

[0062] In order to improve the shielding effect of the baffle 4, a matching structure is provided in the shell 1, and when the baffle 4 is in the first shielding state or in the second shielding state, the baffle 4 abuts and cooperates with the matching structure. The matching structure is used to facilitate the movement of the baffle 4 and also to improve the shielding effect of the baffle 4. Preferably, the matching structure is three protruding structures in the shell 1, and the baffle 4 can move between the three protruding structures. The three protruding structures include a first protruding structure, a second protruding structure, and a third protruding structure distributed in a ring along the rotation axis of the baffle 4, and when the baffle 4 is in the first shielding state, the baffle 4 abuts and cooperates with the first protruding structure and the second protruding structure, and when the baffle 4 is in the second shielding state, the baffle 4 abuts and cooperates with the second protruding structure and the third protruding structure.

[0063] The number of the fans 2 is at least two, all of which are arranged in parallel in the housing 1, and the baffle 4 is arranged between two adjacent fans 2. The baffle 4 is used to adjustably block the space between the fans 2, and the adjustment of the baffle 4 is synchronized with the adjustment of the movable volute 25, so as to ensure that the fans 2 can discharge air in the set air outlet direction and ensure the working reliability of the indoor unit.

[0064] Similarly, in order to ensure the sealing effect of the space between the fan 2 and the shell 1, the baffle 4 is provided between the fan 2 located at the end and the shell 1 to prevent the gas from flowing through the space between the fan 2 and the shell 1, thereby ensuring that the partition between the first air outlet 11 and the second air outlet 12 is reliable, and the airflow of the first air outlet 11 and the airflow of the second air outlet 12 can only flow to the fan air inlet 21, thereby ensuring that the fan 2 can discharge air in the set air outlet direction and ensuring the working reliability of the indoor unit.

[0065] When the movable volute 25 is in the first working state or in the second working state, the movable volute 25 and a part of the fixed volute 24 form a complete volute-like structure. By making the movable volute 25 and the fixed volute 24 form a complete volute-like structure, the airflow is well driven and guided, so that the airflow can smoothly enter the volute-like structure through the fan air inlet 21, and smoothly flow to the first air outlet 22 or the second air outlet 23 through the guiding effect of the volute-like structure, and finally discharged from the fan 2, thereby ensuring the working efficiency of the fan 2.

[0066] The first air outlet 11 is arranged on the bottom wall of the shell 1, and the second air outlet 12 is arranged on the side wall of the shell 1. When the indoor unit is in the first state, the indoor unit realizes downward return air and sideways air outlet, so that the cold air is blown horizontally to avoid the discomfort caused by direct blowing of cold air; when the indoor unit is in the second state, the sideways return air and downward air outlet are realized to realize hot air blowing downward, thereby improving the heating effect.

[0067] Alternatively, the first air outlet 22 is connected to the outside of the shell 1 through the side wall of the shell 1, so that the cold air is blown horizontally to avoid the discomfort caused by the direct blowing of cold air; the second air outlet 23 is connected to the outside of the shell 1 through the bottom wall of the shell 1, so that the hot air is blown downward to improve the heating effect.

[0068] An air conditioner comprises the indoor unit mentioned above.

[0069] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An indoor unit, characterized in that: include: A housing (1), wherein an air outlet is provided on the housing (1); A fan (2), the fan (2) being arranged in the housing (1), the fan (2) having a fan air inlet (21) and a fan air outlet; A filter structure (3), the filter structure (3) being arranged between the housing (1) and the fan (2), and the filter structure (3) being provided with an avoidance area (31) and a filter area (32); The indoor unit has a first state in which the fan air inlet (21) is connected to the air outlet via the filter area (32), and the indoor unit also has a second state in which the fan air outlet is connected to the air outlet via the avoidance area (31).

2. The indoor unit according to claim 1, characterized in that: A connecting structure is provided between the fan air outlet and the avoidance area (31); and / or the edge of the fan air outlet is sealed and matched with the edge of the avoidance area (31).

3. The indoor unit according to claim 1, characterized in that: The number of the fans (2) is at least two, all the fans (2) are arranged in parallel, and the avoidance areas (31) correspond one to one with the fans (2).

4. The indoor unit according to claim 1, characterized in that: The air outlet comprises a first air outlet (11) and a second air outlet (12); the fan air outlet comprises a first air outlet (22) and a second air outlet (23); the indoor unit has a first state in which the first air outlet (11) takes in air and the second air outlet (23) is connected to the second air outlet (12) for air outlet; the indoor unit also has a second state in which the second air outlet (12) takes in air and the first air outlet (22) is connected to the first air outlet (11) for air outlet; the filter structure (3) is arranged between the first air outlet (11) and the first air outlet (22), and the first air outlet (22) is connected to the first air outlet (11) through the avoidance area (31); and / or the filter structure (3) is arranged between the second air outlet (23) and the second air outlet (12), and the second air outlet (23) is connected to the second air outlet (12) through the avoidance area (31).

5. The indoor unit according to claim 4, characterized in that: The fan (2) comprises: A fixed volute (24), wherein the first air outlet (22) and the second air outlet (23) are provided on the fixed volute (24); a movable volute (25), the movable volute (25) being movably disposed in the fixed volute (24), and the movable volute (25) having a first working state of shielding the first air outlet (22) and avoiding the second air outlet (23), and the movable volute (25) also having a second working state of avoiding the first air outlet (22) and shielding the second air outlet (23); When the indoor unit is in the first state, the movable volute (25) is in the first working state; When the indoor unit is in the second state, the movable volute (25) is in the second working state.

6. The indoor unit according to claim 5, characterized in that: The fan (2) further comprises a baffle (4), the baffle (4) being movably arranged outside the fixed volute (24), and the baffle (4) having a first shielding state located between the second air outlet (12) and the fan air inlet (21), and the baffle (4) also having a second shielding state located between the first air outlet (11) and the fan air inlet (21); When the indoor unit is in the first state, the baffle (4) is in the first shielding state; When the indoor unit is in the second state, the baffle (4) is in the second shielding state.

7. The indoor unit according to claim 6, characterized in that: The baffle (4) is connected to the movable volute (25).

8. The indoor unit according to claim 6, characterized in that: A matching structure is provided in the housing (1); when the baffle (4) is in the first shielding state or in the second shielding state, the baffle (4) abuts against the matching structure.

9. The indoor unit according to claim 6, characterized in that: The number of the fans (2) is at least two, all of the fans (2) are arranged in parallel in the housing (1), and the baffle (4) is arranged between two adjacent fans (2); and / or the baffle (4) is arranged between the fan (2) located at the end and the housing (1).

10. The indoor unit according to claim 5, characterized in that: When the movable volute (25) is in the first working state or in the second working state, the movable volute (25) and a part of the fixed volute (24) form a complete volute-shaped structure.

11. The indoor unit according to claim 4, characterized in that: The first air port (11) is arranged on the bottom wall of the shell (1), and the second air port (12) is arranged on the side wall of the shell (1); the first air outlet (22) is connected to the outside of the shell (1) through the side wall of the shell (1), and the second air outlet (23) is connected to the outside of the shell (1) through the bottom wall of the shell (1).

12. An air conditioner, characterized in that: It comprises the indoor unit according to any one of claims 1 to 11.

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