Air Conditioner

Abstract

The present invention provides an air conditioner, which includes a housing and a first filter. The upper part of the housing has a cooling air outlet and a heating air inlet that can be opened and closed. The first filter is arranged at the heating air inlet. When the air conditioner is in cooling mode, the heating air inlet is closed and the cooling air outlet is opened to discharge air. When the air conditioner is in heating mode, the cooling air outlet is closed and the heating air inlet is opened to take in air. In this solution, the upper part of the housing is provided with two air outlets, a cooling air outlet and a heating air inlet. When cooling, the cooling air outlet discharges air, and when heating, the heating air inlet takes in air. That is, the two air outlets on the upper part of the housing are used for air intake and air outlet, respectively. In this way, there is no need to set a movable mechanism to drive the first filter to move. The first filter can filter the incoming air and will not block the outgoing air. Therefore, this solution reduces the movable mechanism of the air conditioner, thereby simplifying the structure of the air conditioner and reducing the cost.

Description

Technical Field

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

[0002] In the related art, in order to improve the user experience, some air conditioners can switch the direction of air flow. For example, the vents on the upper part of the air conditioner exhaust air during cooling and take in air during heating. In order to prevent impurities in the air from entering the air conditioner, a filter is provided at the vent. When the vent exhausts air, the filter will generate resistance and reduce the wind speed. In order to solve this problem, a movable mechanism is provided in the air conditioner to drive the filter to move so that the filter blocks or avoids the vent according to the wind direction. However, this leads to a complex structure and high cost of the air conditioner. Summary of the invention

[0003] The present invention provides an air conditioner to simplify the structure of the air conditioner and reduce the cost.

[0004] In order to achieve the above-mentioned purpose, the present invention provides an air conditioner, comprising: a shell, the upper part of which has a cooling air outlet and a heating air inlet that can be opened and closed; a first filter, arranged at the heating air inlet; wherein, when the air conditioner is in a cooling mode, the heating air inlet is closed, and the cooling air outlet is opened to discharge air; when the air conditioner is in a heating mode, the cooling air outlet is closed, and the heating air inlet is opened to take in air.

[0005] Furthermore, the lower portion of the shell has a lower vent, and the air conditioner also includes: a fan, which is arranged in a cavity of the shell between the cooling air outlet and the lower vent, and the fan has an upper air supply port and a lower air supply port which can be opened and closed; wherein, when the air conditioner is in the cooling mode, the lower vent takes in air to supply air to the fan, the lower air supply port is closed, the upper air supply port is opened to supply air upward, and the cooling air outlet and the upper air supply port are connected; when the air conditioner is in the heating mode, the heating air inlet supplies air to the fan, the upper air supply port is closed, the lower air supply port is opened to supply air downward, and the lower vent and the lower air supply port are connected and discharge air.

[0006] Furthermore, the air conditioner also includes: an air outlet guide plate rotatably disposed at the cooling air outlet; and an air inlet guide plate rotatably disposed at the heating air inlet.

[0007] Furthermore, the cooling air outlet is located on the top wall of the shell, and the heating air inlet is located on the upper part of the side wall of the shell.

[0008] Furthermore, the fan has an air inlet, and the area above the fan in the shell has an upper air duct, the upper air duct is used to connect the cooling air outlet or the heating air inlet and the air inlet, and a lower air duct is provided between the fan and the shell, and the lower air duct is used to supply air from the bottom of the air conditioner to the air inlet; wherein, when the air conditioner is in the cooling mode, the upper air duct is closed and the lower air duct is opened; when the air conditioner is in the heating mode, the upper air duct is opened and the lower air duct is closed.

[0009] Furthermore, the air conditioner also includes: an upper wind shield mechanism, which is arranged in the cavity of the shell, and at least a portion of the upper wind shield mechanism is movably arranged to open or close the upper air duct; a lower wind shield mechanism, which is arranged in the cavity of the shell, and at least a portion of the lower wind shield mechanism is movably arranged to open or close the lower air duct.

[0010] Furthermore, there are two upper air ducts, and on the horizontal projection plane of the air conditioner, the two upper air ducts are respectively located on both sides of the fan; there are two lower air ducts, and the two lower air ducts are respectively located on both sides of the fan; there are two air inlets, and the two air inlets are respectively located on both sides of the fan.

[0011] Furthermore, the lower portion of the shell also has a lower air inlet, and the lower air inlet and the lower vent are respectively located on both sides of the shell, the lower air inlet is connected to one of the lower air ducts, and the lower vent is connected to another of the lower air ducts.

[0012] Furthermore, the air conditioner also includes: a second filter screen, which is arranged in the lower air duct connected to the lower air vent; and a third filter screen, which is arranged at the lower air inlet.

[0013] Furthermore, the shell has a heat exchange cavity located between the fan and the refrigeration air outlet, a part of the heat exchange cavity forms the upper air duct, and the air conditioner also includes a heat exchanger, which is arranged in the heat exchange cavity of the shell.

[0014] Further, the fan includes: a volute, the volute having the upper air supply port and the lower air supply port; a centrifugal fan blade rotatably disposed in an air induction chamber of the volute; a rotating volute tongue rotatably disposed in the air induction chamber, the rotating volute tongue having a first position for closing the lower air supply port and opening the upper air supply port, and the rotating volute tongue also having a second position for closing the upper air supply port and opening the lower air supply port.

[0015] By applying the technical solution of the present invention, an air conditioner is provided, which includes a housing and a first filter. The upper part of the housing has a cooling air outlet and a heating air inlet that can be opened and closed; the first filter is arranged at the heating air inlet; wherein, when the air conditioner is in cooling mode, the heating air inlet is closed and the cooling air outlet is opened to discharge air; when the air conditioner is in heating mode, the cooling air outlet is closed and the heating air inlet is opened to take in air. In this solution, the upper part of the housing is provided with two air outlets, the cooling air outlet and the heating air inlet. When cooling, the cooling air outlet discharges air, and when heating, the heating air inlet takes in air, that is, the two air outlets on the upper part of the housing are used for air intake and air outlet, respectively. In this way, there is no need to set a movable mechanism to drive the first filter to move, and the first filter can filter the incoming air and will not block the outgoing air. Therefore, this solution reduces the movable mechanism of the air conditioner, thereby simplifying the structure of the air conditioner and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 A schematic diagram showing the structure of an air conditioner provided by an embodiment of the present invention is shown;

[0018] Figure 2 Shows Figure 1 A partial enlarged view of the air conditioner.

[0019] The above drawings include the following reference numerals:

[0020] 10. Casing; 11. Refrigeration air outlet; 12. Heating air inlet; 13. Lower air outlet; 14. Upper air duct; 15. Lower air duct; 16. Lower air inlet; 21. First filter; 22. Second filter; 23. Third filter; 30. Fan; 31. Air inlet; 41. Air outlet guide plate; 42. Air inlet guide plate; 51. Upper wind shield mechanism; 52. Lower wind shield mechanism; 60. Heat exchanger. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1 to Figure 2As shown, an embodiment of the present invention provides an air conditioner, comprising: a shell 10, the upper portion of the shell 10 having an openable and closable cooling air outlet 11 and a heating air inlet 12; a first filter 21, arranged at the heating air inlet 12; wherein, when the air conditioner is in a cooling mode, the heating air inlet 12 is closed, and the cooling air outlet 11 is opened to discharge air; when the air conditioner is in a heating mode, the cooling air outlet 11 is closed, and the heating air inlet 12 is opened to take in air.

[0023] In this solution, the upper part of the housing 10 is provided with two air outlets, a cooling air outlet 11 and a heating air inlet 12. When cooling, the cooling air outlet 11 discharges air, and when heating, the heating air inlet 12 takes in air, that is, the two air outlets on the upper part of the housing 10 are used for air intake and air outlet, respectively. In this way, there is no need to set a movable mechanism to drive the first filter 21 to move. The first filter 21 can filter the incoming air and will not block the outgoing air. Therefore, this solution reduces the movable mechanism of the air conditioner, thereby simplifying the structure of the air conditioner and reducing the cost.

[0024] Further, the lower part of the housing 10 has a lower vent 13, and the air conditioner further includes: a fan 30, which is arranged in a cavity of the housing 10 between the cooling air outlet 11 and the lower vent 13, and the fan 30 has an upper air supply port and a lower air supply port that can be opened and closed; wherein, in the cooling mode of the air conditioner, the lower vent 13 takes in air to supply air to the fan 30, the lower air supply port is closed, the upper air supply port is opened to supply air upward, and the cooling air outlet 11 is connected to the upper air supply port; in the heating mode of the air conditioner, the heating air inlet 12 supplies air to the fan 30, the upper air supply port is closed, the lower air supply port is opened to supply air downward, and the lower vent 13 is connected to the lower air supply port and discharges air. Through this solution, the cooperation of the fan 30 and each air outlet can change the air outlet direction of the air conditioner, that is, cold air is discharged from the upper part during cooling, and warm air is discharged from the lower part during heating, which can improve the heat exchange efficiency and user experience.

[0025] In this embodiment, the air conditioner further includes: an air outlet guide plate 41, which is rotatably arranged at the cooling air outlet 11; and an air inlet guide plate 42, which is rotatably arranged at the heating air inlet 12. With this solution, the cooling air outlet 11 can be opened or closed, or the air outlet direction can be adjusted, by the air outlet guide plate 41, and the heating air inlet 12 can be opened or closed, or the air inlet direction can be adjusted, by the air inlet guide plate 42. Optionally, there are multiple air outlet guide plates 41, and the rotation angle of each air outlet guide plate 41 can be controlled separately. Optionally, there are multiple air inlet guide plates 42, and the rotation angle of each air inlet guide plate 42 can be controlled separately.

[0026] In this embodiment, the cooling air outlet 11 is located on the top wall of the housing 10, and the heating air inlet 12 is located on the upper side wall of the housing 10. In this way, the air conditioner can achieve upward air outlet and side air inlet, ensuring the air outlet and air inlet effects.

[0027] In this embodiment, the fan 30 has an air inlet 31, and the area above the fan 30 in the housing 10 has an upper air duct 14, which is used to connect the cooling air outlet 11 or the heating air inlet 12 with the air inlet 31, and a lower air duct 15 is provided between the fan 30 and the housing 10, and the lower air duct 15 is used to supply air from the lower part of the air conditioner to the air inlet 31; wherein, when the air conditioner is in cooling mode, the upper air duct 14 is closed and the lower air duct 15 is opened; when the air conditioner is in heating mode, the upper air duct 14 is opened and the lower air duct 15 is closed. By opening and closing the upper air duct 14 and the lower air duct 15, the airflow direction can be adjusted when the air conditioner is cooling and heating.

[0028] Furthermore, the air conditioner further comprises: an upper wind shielding mechanism 51, which is disposed in the cavity of the housing 10, and at least a part of the upper wind shielding mechanism 51 is movably disposed to open or close the upper air duct 14; and a lower wind shielding mechanism 52, which is disposed in the cavity of the housing 10, and at least a part of the lower wind shielding mechanism 52 is movably disposed to open or close the lower air duct 15. In this way, the opening and closing of the upper air duct 14 and the lower air duct 15 can be easily controlled.

[0029] With this solution, when the air conditioner is discharging air from the upper air outlet (i.e., the fan is in the state of discharging air from the upper air outlet, and the wind enters the upper air outlet from the upper air outlet and blows out), the upper air duct 14 is closed by the upper wind shielding mechanism, so that the air only enters from the lower air duct 15, avoiding the air intake from the upper air duct 14 and affecting the air outlet; when the air conditioner is discharging air from the lower air outlet (i.e., the fan is in the state of discharging air from the lower air outlet, and the wind enters the lower air outlet from the lower air outlet and blows out), the lower air duct 15 is closed by the lower wind shielding mechanism, so that the air only enters from the upper air duct 14, avoiding the air intake from the lower air duct 15 and affecting the air outlet. Therefore, this solution can increase the air outlet volume of the air conditioner and improve the heat exchange efficiency. Among them, when the fan is in the state of discharging air from the upper air outlet, the upper air outlet is opened, the lower air outlet is closed, the upper air duct 14 is closed, and the lower air duct 15 is opened; when the fan is in the state of discharging air from the lower air outlet, the lower air outlet is opened, the upper air outlet is closed, the upper air duct 14 is opened, and the lower air duct 15 is closed.

[0030] Optionally, the upper wind shielding mechanism includes: an upper baffle, which is rotatably arranged in the upper air duct 14 to open or close the upper air duct 14; and an upper driving unit, which is drivingly connected to the upper baffle to drive the upper baffle to rotate. In this way, the upper baffle is rotated by the upper driving unit, so that the upper air duct 14 is opened or closed by the upper baffle. This solution has a simple structure and is easy to control. Specifically, the lower end opening of the upper air duct 14 is used to communicate with the air inlet, and the upper baffle is arranged at the lower end opening of the upper air duct 14. The rotation of the upper baffle can open or close the lower end opening of the upper air duct 14.

[0031] Optionally, the shape of the upper baffle plate matches the cross-sectional shape of the upper air duct 14, and the upper wind shielding mechanism further includes: a rotating shaft, the rotating shaft is connected to the upper baffle plate, one end of the rotating shaft is passed through the housing 10, and the other end of the rotating shaft is connected to the driving shaft of the upper driving part. The rotation of the upper baffle plate can be easily realized by setting the rotating shaft.

[0032] Specifically, there are two upper air ducts 14, which are respectively located on both sides of the fan 30 on the horizontal projection plane of the air conditioner; there are two lower air ducts 15, which are respectively located on both sides of the fan 30; there are two air inlets 31, which are respectively located on both sides of the fan 30. Through this arrangement, the ventilation volume of the air conditioner can be increased.

[0033] In this embodiment, the lower part of the housing 10 also has a lower air inlet 16, and the lower air inlet 16 and the lower vent 13 are respectively located on both sides of the housing 10, the lower air inlet 16 is connected to a lower air duct 15, and the lower vent 13 is connected to another lower air duct 15. When the air conditioner is cooling, the lower air inlet 16 is used to take in air, that is, when cooling, the lower air inlet 16 and the lower vent 13 take in air at the same time, which can increase the air volume. When the air conditioner is heating, since the lower air duct 15 is closed, the lower air inlet 16 cannot discharge air, the lower vent 13 is connected to the lower air supply port, and air is discharged from the lower vent 13. The heating air inlet 12 and the lower air inlet 16 are located on the same side of the housing 10, specifically on the side facing away from the user, and the lower vent 13 is located on the side of the housing 10 facing the user.

[0034] In this embodiment, the air conditioner further includes: a second filter 22, which is arranged in the lower air duct 15 connected to the lower vent 13; and a third filter 23, which is arranged at the lower air inlet 16. In this way, the air entering the lower air duct 15 can be filtered to prevent impurities from entering.

[0035] In this embodiment, the housing 10 has a heat exchange cavity between the fan 30 and the cooling air outlet 11, a part of the heat exchange cavity forms an upper air duct 14, and the air conditioner further includes a heat exchanger 60, which is arranged in the heat exchange cavity of the housing 10. The heat exchanger 60 exchanges heat with the air entering the heat exchange cavity, thereby achieving cooling or heating. Optionally, the heat exchanger 60 is a V-shaped structure, which can increase the contact area and heat exchange effect. The heating air inlet 12 is set at a position higher than the heat exchanger 60.

[0036] In this embodiment, the fan 30 includes: a volute, the volute has an upper air outlet and a lower air outlet; a centrifugal fan blade, which is rotatably arranged in the air induction cavity of the volute; a rotating volute tongue, which is rotatably arranged in the air induction cavity, the rotating volute tongue having a first position of closing the lower air outlet and opening the upper air outlet, and the rotating volute tongue also having a second position of closing the upper air outlet and opening the lower air outlet. The rotation of the centrifugal fan blade realizes air suction, and the fan 30 can discharge air upward or downward by switching the position of the rotating volute tongue.

[0037] Optionally, the rotating volute tongue is an arc-shaped structure, and the fan further comprises: an arc-shaped rack, which is arranged on the rotating volute tongue; and a gear, which is rotatably arranged on the volute, and the gear and the arc-shaped rack are meshed to drive the rotating volute tongue to rotate. When the gear rotates, the arc-shaped rack drives the rotating volute tongue to rotate, and the arc-shaped rack drives the rotating volute tongue to rotate, thereby realizing the position switching of the rotating volute tongue.

[0038] Optionally, the inner wall of the air induction chamber has a guide groove, and the fan further includes a guide structure, which is arranged on the rotating volute tongue, and the guide structure is located in the guide groove to move along the guide groove. In this way, the rotating volute tongue can be guided by the cooperation of the guide structure and the guide groove, so that the rotating volute tongue moves smoothly, the shaking is reduced, and the reliability is improved.

[0039] Optionally, the guide structure includes: a first roller rotatably disposed on the rotating volute tongue, the axis of the first roller is parallel to the rotation center line of the rotating volute tongue, and the first roller abuts against the side wall of the guide groove; a second roller rotatably disposed on the rotating volute tongue, the axis of the second roller is perpendicular to the rotation center line of the rotating volute tongue, and the second roller abuts against the bottom wall of the guide groove. By using the first roller and the second roller with different axes, the rotating volute tongue is limited and guided in different directions, so that the rotating volute tongue moves smoothly. The first roller and the second roller are used to avoid direct contact between the rotating volute tongue and the inner wall of the air induction chamber, reduce friction resistance, and move smoothly.

[0040] Optionally, the rotating volute tongue includes: an arc-shaped plate, the arc-shaped plate is used to block the upper air outlet or the lower air outlet, and there is a gap between the arc-shaped plate and the inner wall of the air induction chamber; an arc-shaped baffle, which is arranged on the arc-shaped plate, and a part of the arc-shaped baffle is located in the guide groove. The gap is arranged between the arc-shaped plate and the inner wall of the air induction chamber, which can facilitate the rotation of the rotating volute tongue and avoid jamming. The arc-shaped baffle extending into the guide groove can block the gap to avoid air leakage in the gap, thereby improving the sealing and air volume of the fan. Optionally, there is a gap between the arc-shaped baffle and the inner wall of the air induction chamber, so as to avoid the contact between the arc-shaped baffle and the inner wall of the air induction chamber and generate friction. Moreover, the arc-shaped baffle has an avoidance groove for avoiding the guide structure. By setting the avoidance groove, interference between the guide structure and the arc-shaped baffle can be avoided, which facilitates the arrangement of the guide structure.

[0041] The air inlet and outlet paths of the air conditioner change when cooling or heating. When the air conditioner is cooling, the air enters the lower vent at the bottom front and the lower air inlet at the back cover at the same time, passes through the internal air duct, and then exits from the top cooling outlet, while the heating air inlet at the upper back is closed; when heating, the top cooling outlet is closed, and the heating air inlet at the back of the head is opened to let in air, which passes through the internal air duct and then exits from the lower vent at the bottom front. This solution uses different air inlets for the air inlet and outlet at the upper part of the shell, which reduces the movable mechanism and makes the air conditioner structure simpler. The first filter is set at the position of the heating air inlet and does not affect the air outlet of the air conditioner.

[0042] 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

1. An air conditioner, characterized in that: include: A housing (10), wherein the upper portion of the housing (10) is provided with a cooling air outlet (11) and a heating air inlet (12) that can be opened and closed; A first filter (21) is arranged at the heating air inlet (12); Wherein, when the air conditioner is in cooling mode, the heating air inlet (12) is closed, and the cooling air outlet (11) is opened to discharge air; when the air conditioner is in heating mode, the cooling air outlet (11) is closed, and the heating air inlet (12) is opened to take in air; The lower portion of the housing (10) is provided with a lower vent (13), and the air conditioner further comprises: a fan (30) disposed in a cavity of the housing (10) between the cooling air outlet (11) and the lower vent (13); the fan (30) comprises: a volute, the volute having an upper air outlet and a lower air outlet that can be opened and closed; a centrifugal fan blade rotatably disposed in an air induction cavity of the volute; a rotating volute tongue rotatably disposed in the air induction cavity, the rotating volute tongue having a first position for closing the lower air outlet and opening the upper air outlet, and the rotating volute tongue also having a second position for closing the upper air outlet and opening the lower air outlet; When the air conditioner is in the cooling mode, the lower vent (13) takes in air to supply air to the fan (30), the lower air supply port is closed, the upper air supply port is opened to supply air upward, and the cooling air outlet (11) is connected to the upper air supply port; when the air conditioner is in the heating mode, the heating air inlet (12) supplies air to the fan (30), the upper air supply port is closed, the lower air supply port is opened to supply air downward, and the lower vent (13) is connected to the lower air supply port and discharges air; The fan (30) has an air inlet (31); an area in the housing (10) above the fan (30) has an upper air duct (14); the upper air duct (14) is used to connect the cooling air outlet (11) or the heating air inlet (12) with the air inlet (31); a lower air duct (15) is provided between the fan (30) and the housing (10); the lower air duct (15) is used to supply air from the lower part of the air conditioner to the air inlet (31); wherein, when the air conditioner is in the cooling mode, the upper air duct (14) is closed and the lower air duct (15) is opened; and when the air conditioner is in the heating mode, the upper air duct (14) is opened and the lower air duct (15) is closed; The inner wall of the air induction cavity has a guide groove, and the fan (30) also includes a first roller and a second roller, the first roller is rotatably arranged on the rotating volute tongue, the axis of the first roller is parallel to the rotation center line of the rotating volute tongue, the first roller abuts against the side wall of the guide groove, the second roller is rotatably arranged on the rotating volute tongue, the axis of the second roller is perpendicular to the rotation center line of the rotating volute tongue, and the second roller abuts against the bottom wall of the guide groove; The rotating volute tongue includes an arc-shaped plate and an arc-shaped retaining rib, the arc-shaped plate is used to block the upper air supply port or the lower air supply port, a gap is provided between the arc-shaped plate and the inner wall of the air induction cavity, the arc-shaped retaining rib is provided on the arc-shaped plate, a part of the arc-shaped retaining rib is located in the guide groove, and a gap is provided between the arc-shaped retaining rib and the inner wall of the air induction cavity; An air outlet guide plate (41) is rotatably arranged at the refrigeration air outlet (11), there are a plurality of air outlet guide plates (41), and the rotation angle of each air outlet guide plate (41) can be controlled individually; An air inlet guide plate (42) is rotatably arranged at the heating air inlet (12); there are a plurality of air inlet guide plates (42), and the rotation angle of each air inlet guide plate (42) can be individually controlled.

2. The air conditioner according to claim 1, characterized in that: The cooling air outlet (11) is located on the top wall of the outer shell (10), and the heating air inlet (12) is located on the upper part of the side wall of the outer shell (10).

3. The air conditioner according to claim 1, characterized in that: The air conditioner also includes: An upper wind shielding mechanism (51) is arranged in the cavity of the housing (10), and at least a part of the upper wind shielding mechanism (51) is movably arranged to open or close the upper air duct (14); A lower wind shielding mechanism (52) is arranged in the cavity of the housing (10), and at least a part of the lower wind shielding mechanism (52) is movably arranged to open or close the lower air duct (15).

4. The air conditioner according to claim 1, characterized in that: There are two upper air ducts (14), and on the horizontal projection plane of the air conditioner, the two upper air ducts (14) are respectively located on both sides of the fan (30); there are two lower air ducts (15), and the two lower air ducts (15) are respectively located on both sides of the fan (30); there are two air inlets (31), and the two air inlets (31) are respectively located on both sides of the fan (30).

5. The air conditioner according to claim 4, characterized in that: The lower portion of the shell (10) further comprises a lower air inlet (16), wherein the lower air inlet (16) and the lower vent (13) are respectively located on two sides of the shell (10); wherein the lower air inlet (16) is connected to one of the lower air ducts (15), and the lower vent (13) is connected to another of the lower air ducts (15).

6. The air conditioner according to claim 5, characterized in that: The air conditioner also includes: A second filter screen (22) is arranged in the lower air duct (15) which is in communication with the lower air vent (13); The third filter screen (23) is arranged at the lower air inlet (16).

7. The air conditioner according to claim 1, characterized in that: The shell (10) has a heat exchange cavity located between the fan (30) and the refrigeration air outlet (11), a portion of the heat exchange cavity forms the upper air duct (14), and the air conditioner also includes a heat exchanger (60), which is arranged in the heat exchange cavity of the shell (10).

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