Air conditioner with common air inlet and outlet and control method thereof

Abstract

The application provides an air conditioner with a shared air inlet and outlet and a control method thereof. The air conditioner comprises an air conditioner shell, an air inlet and outlet are formed on the air conditioner shell, the air inlet and outlet can be used as an air outlet and an air inlet, the air inlet and outlet are provided with an air inlet and outlet protection structure, the air inlet and outlet protection structure comprises a switching protection piece and a driving component, the switching protection piece is provided with a filtering area, an air outlet area and a shielding and closing area, and the driving component is drivingly connected with the switching protection piece to drive one of the filtering area, the air outlet area and the shielding and closing area of the switching protection piece to correspond to the air inlet and outlet. According to the actual state demand of the air inlet and outlet, the driving component is controlled to drive the switching protection piece to move and switch different areas to correspond to the air inlet and outlet, so that the state demand of the air inlet and outlet of the air conditioner in different operation modes is met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of air conditioning technology, and particularly relates to an air conditioner with a shared air inlet and outlet and a control method thereof. BACKGROUND

[0002] There are two kinds of air outlet protection technologies for existing up-and-down air outlet air conditioner (i.e. cabinet air conditioner). One is to design a fixed grille. In order to reduce the loss of air volume, the opening interval of the grille cannot be too small. Therefore, this scheme can only prevent relatively large pests from entering the air conditioner, but small pests can still enter the air conditioner, which has certain use safety hazards. The other is to design a movable baffle. When the air conditioner is in standby or up-air mode, the baffle is closed. When the air conditioner starts the down-air mode, the baffle is opened to blow air. This scheme can effectively prevent insects and rodents from entering the air duct.

[0003] In the up-and-down air outlet air conditioner technology with a new double-axial flow fan, when the air conditioner is in up-air mode, the upper air outlet is the air outlet, and the lower air outlet is the air inlet. When the air conditioner is in down-air mode, the lower air outlet is the air outlet, and the upper air outlet is the air inlet. In this up-and-down air outlet technology, the lower air outlet needs to be opened regardless of the up-air mode or the down-air mode. The traditional lower air outlet protection technology obviously cannot meet the use safety requirements. SUMMARY

[0004] Therefore, the present application provides an air conditioner with a shared air inlet and outlet and a control method thereof, which can overcome the technical problem that the air outlet protection structure in the prior art cannot meet the use mode requirements of the air conditioner with a shared air inlet and outlet.

[0005] In order to solve the above problems, the present application provides an air conditioner with a shared air inlet and outlet, which comprises an air conditioner shell, an air outlet is formed on the air conditioner shell, the air outlet can be used as an air inlet as well as an air outlet, the air outlet is provided with an air outlet protection structure, the air outlet protection structure comprises a switching protection piece and a driving component, the switching protection piece is formed with a filtering area, an air outlet area and a shielding and closing area, and the driving component is drivingly connected with the switching protection piece to drive one of the filtering area, the air outlet area and the shielding and closing area of the switching protection piece to correspond to the air outlet.

[0006] In some embodiments, the switching protection piece comprises two parallel and spaced connection belts, one end of the two connection belts is connected with a baffle, the baffle forms the shielding and closing area, the other end of the two connection belts is connected with a filter screen, the filter screen forms the filtering area, and the interval area between the two connection belts forms the air outlet area.

[0007] In some embodiments, the driving component comprises a rotating shaft and a driving motor for driving the rotating shaft to rotate in opposite directions, the rotating shaft is horizontally arranged at the top region of the air outlet, the rotating shaft is provided with a first gear and a second gear at intervals along the axial direction of the rotating shaft, one side of the connecting belt is provided with teeth, and the two connecting belts are respectively arranged in the angle formed between the first gear and the second gear and in the tooth engagement state, so that the baffle and the filter screen are respectively arranged at the opposite sides of the rotating shaft.

[0008] In some embodiments, the air conditioner further comprises guide rails, and the guide rails are arranged at the left and right sides of the air outlet in the use state of the air conditioner, the opposite sides of the guide rails are provided with guide rail grooves extending upward and downward, the rotating shaft is arranged at the top end of the two guide rails, and the first gear and the second gear are respectively arranged in the guide rail grooves on the two sides; and / or, the driving motor is fixed to one of the two guide rails; and / or, the material of the connecting belt is flexible material.

[0009] In some embodiments, the guide rail groove is provided with a roller, the roller is arranged at intervals between the first gear and the second gear and can be pressed on the side of the connecting belt away from the rotating shaft so that the connecting belt is clamped between the first gear and the roller or between the second gear and the roller; and / or, the length of the guide rail groove is L, the lengths of the shielding and closing region and the filtering region are equal and are L1, and the length of the air outlet region is 2L1, L>3L1.

[0010] In some embodiments, two rollers are arranged in the same guide rail groove, and the two rollers are respectively arranged at the side of the rotating shaft close to the filtering region and the side of the rotating shaft close to the shielding and closing region.

[0011] In some embodiments, the guide rail is arranged at the inner side of the air outlet; and / or, the guide rail is a T-shaped guide rail.

[0012] In some embodiments, the air conditioner is an up-down air outlet cabinet type air conditioner, and the air outlet is the lower air outlet of the up-down air outlet cabinet type air conditioner.

[0013] The application also provides a control method of the air conditioner with the shared air inlet and outlet, comprising the following steps:

[0014] obtaining a working instruction;

[0015] when the working instruction is air outlet, controlling the air outlet region of the switching protection member to move to the air outlet; or,

[0016] when the working instruction is air inlet, controlling the filtering region of the switching protection member to move to the air inlet; or,

[0017] When the working instruction is the tuyere closing, the shielding closed area of the switching guard is controlled to move to the tuyere.

[0018] The application also provides a control method of the air conditioner with the shared tuyere for air inlet and outlet, comprising the following steps:

[0019] Obtaining the working mode of the air conditioner;

[0020] When the working mode is the lower air outlet mode, the air outlet area of the switching guard is controlled to move to the tuyere; or,

[0021] When the working mode is the upper air outlet mode, the filtering area of the switching guard is controlled to move to the tuyere; or,

[0022] When the working mode is the shutdown or standby mode, the shielding closed area of the switching guard is controlled to move to the tuyere.

[0023] The application provides an air conditioner with a shared tuyere for air inlet and outlet and a control method thereof, which have the following advantages.

[0024] Advantages:

[0025] By simultaneously arranging the filtering area, the air outlet area and the shielding closed area on the switching guard, the driving part can be controlled to drive the switching guard to move and switch different areas corresponding to the tuyere according to the actual state requirement of the tuyere, thereby meeting the state requirement of the tuyere in different operation modes of the air conditioner, specifically, when the tuyere is used as an air outlet, the air outlet area corresponds to the tuyere to ensure that the air outlet is not shielded and the air outlet amount is maximized; when the tuyere is used as an air inlet, the filtering area corresponds to the tuyere to ensure that the air entering the air conditioner is filtered, the heat exchanger in the air conditioner is clean, and external mice and insects are prevented from entering the air conditioner; when the air conditioner is in standby or shutdown, the tuyere is sealed to prevent dust, water and external mice and insects from entering the air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. The drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0027] Figure 1 is a front view structural schematic diagram of the switching guard of the air conditioner with the shared tuyere for air inlet and outlet according to the embodiments of the application;

[0028] Figure 2is Figure 1 the left view of the switching guard in

[0029] Figure 3 is Figure 1 the perspective structural schematic view of the switching guard in

[0030] Figure 4 is the state schematic view of the shielding closed area of the switching guard in the air conditioner with the shared air inlet and outlet air outlet in the embodiment of the present application being at the air outlet;

[0031] Figure 5 is the state schematic view of the air outlet area of the switching guard in the air conditioner with the shared air inlet and outlet air outlet in the embodiment of the present application being at the air outlet;

[0032] Figure 6 is the state schematic view of the filtering area of the switching guard in the air conditioner with the shared air inlet and outlet air outlet in the embodiment of the present application being at the air outlet;

[0033] Figure 7 is the perspective structural schematic view of the switching guard and the guide rail and the driving component in the air conditioner with the shared air inlet and outlet air outlet in the embodiment of the present application being in the assembled state;

[0034] Figure 8 is Figure 7 the front view;

[0035] Figure 9 is Figure 8 the top view;

[0036] Figure 10 is Figure 9 the partial structural schematic view;

[0037] Figure 11 is Figure 7 the front view of the guide rail in

[0038] Figure 12 is Figure 7 the perspective structural schematic view of the rotating shaft in

[0039] The reference signs are:

[0040] 1, air conditioner shell; 11, air outlet; 2, switching guard; 21, filtering area; 22, air outlet area; 23, shielding closed area; 24, connecting belt; 241, tooth; 251, baffle; 252, filter screen; 31, rotating shaft; 311, first gear; 312, second gear; 32, driving motor; 4, guide rail; 41, guide rail slot; 5, roller. DETAILED DESCRIPTION

[0041] Clearly, the embodiments described are only a part of all the embodiments of the present application, rather than all the embodiments. The following description of at least one example embodiment is merely illustrative in nature and does not limit the present application or its applications or uses in any way. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0042] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the devices or elements indicated must have a specific orientation or be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0044] In addition, it should be noted that the use of "first", "second" and the like to define parts has only the purpose of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0045] Referring to Figure 1 and Figure 12As shown, according to the embodiment of the present application, an air conditioner with a common air inlet and outlet is provided, comprising an air conditioner shell 1, wherein an air inlet 11 is formed on the air conditioner shell 1, the air inlet 11 can be used as an air outlet and an air inlet, the air inlet 11 is provided with an air inlet protection structure (not shown in the figure), the air inlet protection structure comprises a switching protection piece 2 and a driving component (not shown in the figure), the switching protection piece 2 is formed with a filtering area 21, an air outlet area 22 and a shielding and closing area 23, and the driving component is drivingly connected with the switching protection piece 2 to drive one of the filtering area 21, the air outlet area 22 and the shielding and closing area 23 of the switching protection piece 2 to correspond to the air inlet 11, that is, the corresponding area is in the flow-through space of the air inlet 11 to realize different working states (as an air inlet or an air outlet or blocked) of the air inlet 11.

[0046] In the technical solution, the filtering area 21, the air outlet area 22 and the shielding and closing area 23 are arranged on the switching protection piece 2 at the same time, so that according to the actual state requirement of the air inlet 11, the driving component can be controlled to drive the switching protection piece 2 to move and switch different areas to correspond to the air inlet 11, thereby meeting the state requirement of the air inlet 11 of the air conditioner in different operation modes, specifically, the air outlet area 22 corresponds to the air inlet 11 when the air inlet 11 is used as an air outlet to ensure that the air outlet is not blocked and the air outlet amount is maximized, the filtering area 21 corresponds to the air inlet 11 when the air inlet 11 is used as an air inlet to ensure that the air entering the air conditioner is filtered, the cleanliness of the heat exchanger in the air conditioner is ensured, and external mice and insects are prevented from entering the air conditioner, and the air inlet 11 is sealed when the air conditioner is on standby or off to prevent dust, water and external mice and insects from entering the air conditioner.

[0047] For reference Figures 1 to 3 As shown, in a specific embodiment, the switching protection piece 2 comprises two parallel and spaced connection bands 24, one end of the two connection bands 24 is connected with a baffle 251, the baffle 251 forms the shielding and closing area 23, the other end of the two connection bands 24 is connected with a filter screen 252, the filter screen 252 forms the filtering area 21, and the spacing area between the two connection bands 24 forms the air outlet area 22.

[0048] In the technical solution, the baffle 251 and the filter screen 252 are arranged at the two ends of the length of the two connection bands 24 respectively to form the filtering area 21, the air outlet area 22 and the shielding and closing area 23 arranged in sequence in the length direction of the connection band 24, and then the relative position change of the whole and the air inlet 11 can be used to realize different air inlet states, and the structure is simple.

[0049] For reference Figures 7 to 9The driving component includes a rotating shaft 31 and a driving motor 32 for driving the rotating shaft 31 to rotate in opposite directions. The rotating shaft 31 is horizontally arranged at the top region of the air outlet 11. The rotating shaft 31 is provided with a first gear 311 and a second gear 312 along the axial direction thereof. One side of the connecting belt 24 (i.e. the side facing the rotating shaft 31) is provided with teeth 241. The two connecting belts 24 are respectively arranged in the angle formed between the first gear 311 and the second gear 312 and are in gear engagement. The baffle 251 and the filter screen 252 are respectively arranged at the opposite sides of the rotating shaft 31.

[0050] In the technical scheme, the rotating shaft 31 with the first gear 311 and the second gear 312 is in gear engagement with the connecting belt 24 with the teeth 241 on both sides. When the rotating shaft 31 is driven to rotate by the driving motor 32, the position adjustment and switching of different regions of the switching protection piece 2 and the air outlet 11 can be realized, and the control is simple.

[0051] In one specific embodiment, the aforementioned connecting belt 24 has flexibility, i.e. the material of the connecting belt 24 is flexible material, for example, the connecting belt 24 is made of rubber strip. The segments of the connecting belt 24 respectively arranged at the two sides of the first gear 311 or the second gear 312 can be kept flat under the action of the weight of the baffle 251 and the filter screen 252, thereby ensuring that the baffle 251 and the filter screen 252 are accurately positioned corresponding to the air outlet 11 when they are arranged at the air outlet 11 and improving the smoothness of the position switching of the switching protection piece 2.

[0052] In some embodiments, the air conditioner further includes guide rails 4. With reference to the orientation of the air conditioner in use, one guide rail 4 is arranged on each of the left and right sides of the air outlet 11. The guide rails 4 are provided with guide rail grooves 41 extending upward and downward on the opposite sides thereof. The rotating shaft 31 is arranged at the top end of the two guide rails 4, and the first gear 311 and the second gear 312 are respectively and correspondingly arranged in the guide rail grooves 41 on the two sides. It can be understood that correspondingly, the switching protection piece 2 is also arranged in the guide rail grooves 41. In this way, the aforementioned guide rail grooves 41 can hide the first gear 311, the second gear 312 and the switching protection piece 2 therein, preventing the movement pairs from contacting the surrounding components and causing faults. In another preferred embodiment, the driving motor 32 is fixed to one of the two guide rails 4. The output shaft of the driving motor 32 is directly connected to one end of the rotating shaft 31 through a spline or other connecting structure. The shell of the driving motor 32 is fixedly connected to the guide rail 4. In this way, the compactness of the air outlet protection structure can be improved.

[0053] Specifically referring to Figure 9 and Figure 10As shown, in some embodiments, the guide rail groove 41 is provided with a roller 5, the roller 5 is arranged at intervals with the first gear 311 and the second gear 312 and can be pressed on the side of the connecting belt 24 away from the rotating shaft 31 to make the connecting belt 24 clamped between the first gear 311 and the roller 5 or clamped between the second gear 312 and the roller 5.

[0054] In the technical solution, the pressing of the connecting belt 24 is formed by arranging the roller 5 in the guide rail groove 41, so that the meshing reliability between the teeth 241 on the connecting belt 24 and the first gear 311 and the second gear 312 can be ensured, and the deviation of the connecting belt 24 during movement is prevented, thereby ensuring the accurate and reliable position switching of the rotating shaft 31 to the switching protection piece 2.

[0055] The length of the guide rail groove 41 is L, the lengths of the shielding and closing area 23 and the filtering area 21 are equal and are L1, the length of the air outlet area 22 is 2L1, L>3L1, that is, L=3L1+C, C is a structural allowance, and the value of C is greater than 0, so that the filtering screen 252 and the baffle 251 of the switching protection piece 2 can be at least partially in the guide rail groove 41 during the position switching of the switching protection piece 2, thereby ensuring smooth and stable position switching.

[0056] Specifically referring to Figure 10 As shown, two rollers 5 are arranged in the same guide rail groove 41, and the two rollers 5 are respectively on the side of the rotating shaft 31 close to the filtering area 21 and the side of the rotating shaft 31 close to the shielding and closing area 23.

[0057] In the technical solution, one roller 5 is arranged on each of the opposite sides of the first gear 311 and the second gear 312, so that the reliable formation of the connecting belt 24 and the corresponding gear angle can be ensured by the two oppositely arranged rollers 5, thereby ensuring the reliable driving of the rotating shaft 31 to the connecting belt 24.

[0058] The guide rail 4 is arranged on the inner side of the air inlet 11 to ensure the consistency of the appearance of the air conditioner and improve the appearance aesthetics; in a specific embodiment, the guide rail 4 is a T-shaped guide rail, by designing the guide rail 4 as a T shape, the two rollers 5 in each of the aforementioned guide rail grooves 41 can be arranged at the wider position of the T shape, thereby making the structure design more reasonable.

[0059] The air conditioner can be a top-down air outlet cabinet type air conditioner, and the air inlet 11 is a lower air inlet of the top-down air outlet cabinet type air conditioner.

[0060] According to the embodiments of the present application, a control method of an air conditioner with a shared air inlet and air outlet is also provided, including the following steps:

[0061] acquiring a working instruction;

[0062] when the working instruction is air outlet, the air outlet area 22 of the switching shield 2 is controlled to move to the air outlet 11, as shown in Figure 5 or,

[0063] when the working instruction is air inlet, the filtering area 21 of the switching shield 2 is controlled to move to the air outlet 11, as shown in Figure 6 or,

[0064] when the working instruction is air outlet, the air outlet area 22 of the switching shield 2 is controlled to move to the air outlet 11, as shown in Figure 4 .

[0065] As shown in Figure 8 , the state is that the air outlet area 22 corresponds to the air outlet 11, that is, the air outlet 11 is used as an air inlet at this time, for the convenience of description, the state is taken as the control starting state of the application, when the working instruction is air inlet, the driving motor 32 is not operated, and the filtering area 21 of the switching shield 2 remains in the current position, when the working instruction is air outlet, the driving motor 32 is controlled to operate counterclockwise by a first angle at this time, so that the air outlet area 22 rises to the height corresponding to the air outlet 11 and the filtering area 21 falls below the lower edge of the air outlet 11, realizing the air outlet without shielding of the air outlet, and having a large air outlet volume; still based on the control starting state, when the working instruction is air outlet (for example, standby or shutdown), the driving motor 32 is controlled to operate counterclockwise by a second angle, so that the shielding and closing area 23 rises to the height corresponding to the air outlet 11, thereby forming a plugging to the air outlet 11, realizing the purpose of dustproof, waterproof and preventing rodents from entering in the standby or shutdown state.

[0066] According to the embodiment of the application, a control method of an air conditioner with a shared air inlet and outlet air outlet is also provided, including the following steps:

[0067] acquiring a working mode of the air conditioner;

[0068] when the working mode is a lower air outlet mode, the air outlet area 22 of the switching shield 2 is controlled to move to the air outlet 11, as shown in Figure 5 or,

[0069] when the working mode is an upper air outlet mode, the filtering area 21 of the switching shield 2 is controlled to move to the air outlet 11, as shown in Figure 6 or,

[0070] when the working mode is a shutdown or standby mode, the shielding and closing area 23 of the switching shield 2 is controlled to move to the air outlet 11, as shown inFigure 4 The specific control implementation manner is described above, and will not be described here.

[0071] Those skilled in the art can understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0072] The above only describes the preferred embodiments of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An air conditioner with a common air inlet and outlet, characterized in that: The invention comprises an air conditioner housing (1), wherein an air outlet (11) is constructed on the air conditioner housing (1), wherein the air outlet (11) can be used as both an air outlet and an air inlet, and wherein the air outlet protection structure is provided at the air outlet. The air outlet protection structure comprises a switching protection member (2) and a driving member, wherein a filtering area (21), an air outlet area (22) and a shielding and sealing area (23) are formed on the switching protection member (2), and the driving member is connected to the switching protection member (2) to drive one of the filtering area (21), the air outlet area (22) and the shielding and sealing area (23) of the switching protection member (2) to correspond to the air outlet (11); the switching protection member (2) comprises two connecting belts ( 24), one end of the two connecting belts (24) is connected to a baffle (251), the baffle (251) forms the shielding and enclosing area (23), the other end of the two connecting belts (24) is connected to a filter (252), the filter (252) forms the filtering area (21), and the interval area between the two connecting belts (24) forms the air outlet area (22); the driving component includes a rotating shaft (31) and a driving motor (32) for driving the rotating shaft (31) in forward and reverse rotation, the rotating shaft (31) is horizontally arranged at the top area of ​​the air outlet (11), and a first gear (311) and a second gear (312) are spaced apart along the axial direction of the rotating shaft (31), the connecting belt ( The rotating shaft (31) is provided with a tooth (241) on one side thereof, and the two connecting belts (24) respectively form an angle with the first gear (311) and the second gear (312) and mesh with the teeth, so that the baffle (251) and the filter (252) are respectively located on opposite sides of the rotating shaft (31); and further comprising a guide rail (4), with reference to the orientation of the air conditioner in use, the guide rail (4) is provided on each of the left and right sides of the air outlet (11), and guide rail grooves (41) extending up and down are formed on the opposite sides of the guide rails (4), and the rotating shaft (31) is mounted on the top ends of the two guide rails (4), and the first gear (311) and the second gear (312) are respectively located on the guide rails on both sides in a one-to-one correspondence. The guide rail groove (41) is provided with a roller (5), the roller (5) is spaced apart from the first gear (311) and the second gear (312) and can be pressed on the side of the connecting belt (24) away from the rotating shaft (31) so that the connecting belt (24) is clamped between the first gear (311) and the roller (5) or between the second gear (312) and the roller (5); and / or the length of the guide rail groove (41) is L, the lengths of the shielding and enclosed area (23) and the filtering area (21) are equal and both are L1, the length of the air outlet area (22) is 2L1, and L>3L1.

2. The air conditioner according to claim 1, characterized in that The drive motor (32) is fixed on one of the two guide rails (4).

3. The air conditioner according to claim 1, characterized in that Two rollers (5) are provided in the same guide rail groove (41), and the two rollers (5) are respectively located on a side of the rotating shaft (31) close to the filtering area (21) and a side of the rotating shaft (31) close to the shielding and enclosing area (23).

4. The air conditioner according to claim 1, wherein: The guide rail (4) is arranged on the inner side of the air outlet (11); and / or the guide rail (4) is a T-shaped guide rail.

5. The air conditioner according to any one of claims 1 to 4, characterized in that: The air conditioner is a cabinet-type air conditioner with upper and lower air outlets, and the air outlet (11) is the lower air outlet of the cabinet-type air conditioner with upper and lower air outlets.

6. A method for controlling an air conditioner having a common inlet and outlet air vent according to any one of claims 1 to 5, characterized in that: The steps include: Obtain work instructions; When the working instruction is to discharge air from the air outlet, the air outlet area (22) of the switching protection element (2) is controlled to move to the air outlet (11); or, When the working instruction is air inlet, the filter area (21) of the switching protection element (2) is controlled to move to the air outlet (11); or, When the working instruction is to close the air outlet, the shielding and closing area (23) of the switching protection element (2) is controlled to move to the air outlet (11).

7. A control method for an air conditioner having a common inlet and outlet vent as claimed in claim 5, characterized in that: The steps include: Get the working mode of the air conditioner; When the working mode is the downward air outlet mode, the air outlet area (22) of the switching protection element (2) is controlled to move to the air outlet (11); or, When the working mode is the upper air outlet mode, the filter area (21) of the switching protection element (2) is controlled to move to the air outlet (11); or, When the working mode is the shutdown mode or the standby mode, the shielding and enclosing area (23) of the switching protection element (2) is controlled to move to the air outlet (11).

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