A cleaning mechanism for an air conditioner, an air conditioner, and a control method

Abstract

The present invention provides a cleaning mechanism for an air conditioner, an air conditioner, and a control method. The cleaning mechanism has a filter screen assembly and a brush assembly. The filter screen assembly has a filter screen, a first driving motor, and a gear-rack mechanism, and is arranged between below the air inlet of the air conditioner and in front of the evaporator. The brush assembly has a brush and is arranged between the evaporator of the air conditioner and the filter screen assembly. When the above cleaning mechanism is applied to the air conditioner, the controller controls the first driving motor to act, so that the filter screen can reciprocate between a first cleaning position and a second cleaning position, and then the brush cleans the filter screen. The condensed water generated by the evaporator of the air conditioner can wash the brush, and the heat generated can dry the brush. The present invention uses a brush to clean the dust on the surface of the filter screen, avoiding the influence of washing the filter screen on the electrical components of the air conditioner, and drying the cleaned brush to avoid the generation of bacteria on the surface of the brush. The structure is simple, the degree of automation is high, and the cleaning effect of the filter screen is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning equipment, and particularly relates to a cleaning mechanism for an air conditioner, an air conditioner, and a control method. Background Art

[0002] The filter screen of an air conditioner usually functions to prevent dust and other impurities from entering the indoor unit and filter the indoor air. However, after the air conditioner has been used for a period of time, the filter screen will be filled with dust, which will not only reduce the air intake of the indoor unit but also affect the air quality of the blown air. To solve this problem, people have thought of dry-brushing or water-washing self-cleaning of the filter screen of the air conditioner. The invention patent CN107525127A proposes a wall-mounted air conditioner and its cleaning control method, which needs to collect the condensed water on the evaporator and enter the cleaning tank to clean the filter screen, and the structure is relatively complex. In addition, its roller brush is always in the cleaning tank storing condensed water, which is prone to breed bacteria and cause secondary pollution. Summary of the Invention

[0003] In view of this, the present invention provides a cleaning mechanism for an air conditioner, an air conditioner, and a control method to solve the problems such as complex cleaning structure and poor cleaning effect in the prior art.

[0004] The present invention provides a cleaning mechanism for an air conditioner. The air conditioner has a housing and an evaporator, and an air inlet is provided at the top of the housing. The cleaning mechanism includes:

[0005] A filter screen assembly is arranged between below the air inlet and in front of the evaporator, and has a filter screen and a first driving device. The first driving device drives the filter screen to move unidirectionally in a cycle or reciprocate bidirectionally between below the air inlet and in front of the evaporator.

[0006] A brush assembly is arranged between the evaporator and the filter screen assembly, and has a brush and a second driving device. When the first driving device drives the filter screen to move in front of the brush, the second driving device drives the brush to move so that the brush cleans the filter screen.

[0007] Further optionally, the first driving device has a first driving motor and a gear-rack mechanism. The gear-rack mechanism has a driving gear, a driven gear, and a rack. The first driving motor is drivingly connected to the driving gear. The driving gear or the driven gear is arranged below the air inlet, and the driven gear or the driving gear is arranged in front of the evaporator. The rack surrounds between the driving gear and the driven gear, and one end of the rack meshes with the driving gear and the other end meshes with the driven gear. The driving gear drives the rack to move unidirectionally in a cycle or reciprocate bidirectionally between the driving gear and the driven gear.

[0008] Further optionally, the filter screen is fixed to the rack; under the action of the first driving motor, the driving gear drives the rack to move, so that the filter screen can move from below the air inlet to in front of the brush and contact the brush, and then the brush cleans the filter screen.

[0009] Further optionally, the filter screen assembly further has an arc-shaped frame, which is arranged on the housing and located between the driving gear and the driven gear; the cross-sectional shape of the arc-shaped frame corresponds to the cross-sectional shape of the housing; the arc-shaped frame plays a role in limiting the rack, so that the rack can move along a fixed track.

[0010] Further optionally, a guide rail or a guide groove is provided on the arc-shaped frame, and correspondingly, a guide groove or a guide rail is provided on the rack; the guide rail cooperates with the guide groove, so that the rack can move along the arc-shaped frame.

[0011] Further optionally, under the action of the first driving motor, the rack meshes with the driving gear and the driven gear, and the guide rail cooperates with the guide groove, so that the rack moves along the arc-shaped frame, and then the filter screen can move from below the air inlet to in front of the brush or from in front of the brush to below the air inlet, realizing that the brush cleans the filter screen and the filter screen filters the air at the air inlet.

[0012] Further optionally, the second driving device has a second driving motor, and the output shaft of the second driving motor is drivingly connected to the brush; under the action of the second driving motor, the brush can contact the filter screen and clean the filter screen.

[0013] The present invention also provides an air conditioner, which has a housing, an evaporator, a controller, a detection module and the cleaning mechanism for an air conditioner according to any one of the above claims; an air inlet is provided at the top of the housing; the filter screen assembly is arranged between below the air inlet and in front of the evaporator; the brush assembly is arranged between the evaporator and the filter screen assembly; the detection module has a position sensor for detecting the position of the filter screen;

[0014] The controller is electrically connected to the first driving motor, the second driving motor and the detection module respectively, receives the data transmitted by the detection module, and controls the actions of the first driving motor and the second driving motor, so that the brush cleans the filter screen.

[0015] Further optionally, the filter screen has a first cleaning position and a second cleaning position; when the filter screen is in the first cleaning position, the front boundary of the filter screen is in front of the brush; when the filter screen is in the second cleaning position, the rear boundary of the filter screen is in front of the brush.

[0016] Further optionally, the controller controls the first driving motor to rotate, and the driving gear drives the rack to move forward along the arc-shaped frame; when the filter screen moves to the first cleaning position, the position sensor transmits data to the controller; the controller controls the second driving motor to drive the brush to rotate, so that the brush contacts and cleans the filter screen;

[0017] When the filter screen moves to the second cleaning position, the position sensor transmits data to the controller; the controller controls the first driving motor to rotate in the reverse direction, the driving gear drives the rack to move back along the arc-shaped frame, and the brush cleans the filter screen;

[0018] When the filter screen moves to the first cleaning position again, the position sensor transmits data to the controller; the controller controls the first driving motor to rotate, the driving gear drives the rack to move forward along the arc-shaped frame, and the brush cleans the filter screen.

[0019] Further optionally, after cleaning the filter screen, the controller controls the first driving motor to rotate, and the driving gear drives the rack to move forward along the arc-shaped frame; when the filter screen moves below the air inlet, the controller controls the first driving motor to stop rotating, and at this time, the filter screen can filter the air entering the air conditioner from the air inlet.

[0020] Further optionally, after cleaning the filter screen, the controller controls the air conditioner to turn on the cooling mode; the controller controls the second driving motor to rotate, so that the brush repeatedly contacts the evaporator, so as to use the condensed water generated by the evaporator to clean the brush.

[0021] Further optionally, after cleaning the brush, the controller controls the air conditioner to turn on the heating mode; the controller controls the second driving motor to rotate, so that the brush repeatedly contacts the evaporator, so that the water on the brush is evaporated, avoiding the growth of bacteria.

[0022] Further optionally, a dust collection box is provided on the housing, below the brush, for collecting the dust dripping when the brush cleans the filter screen.

[0023] The present invention also provides a control method for the air conditioner according to any one of the above, and the method for the air conditioner to clean the filter screen includes:

[0024] S1. The controller controls the first driving motor to rotate, so that the driving gear drives the rack to move forward along the arc-shaped frame, and further the filter screen moves from below the air inlet to the first cleaning position;

[0025] S2. When the filter net moves to the first cleaning position, the controller receives the data transmitted by the position sensor and controls the second driving motor to drive the brush to rotate, so that the brush contacts and cleans the filter net; the filter net continues to move towards the second cleaning position;

[0026] S3. When the filter net moves to the second cleaning position, the controller receives the data transmitted by the position sensor and controls the first driving motor to rotate in the reverse direction. The driving gear drives the rack to move back along the arc-shaped frame, and the brush cleans the filter net; the filter net continues to move towards the first cleaning position;

[0027] S4. When the filter net moves to the first cleaning position again, the controller receives the data transmitted by the position sensor and controls the first driving motor to rotate. The driving gear drives the rack to move forward along the arc-shaped frame, and the brush cleans the filter net; the filter net continues to move towards the second cleaning position;

[0028] S5. Repeat steps S3 and S4 until the cleaning of the filter net is completed;

[0029] Further optionally, after step S5, it further includes:

[0030] S6. The controller controls the first driving motor to rotate. The driving gear drives the rack to move forward along the arc-shaped frame; when the filter net moves below the air inlet, the controller controls the first driving motor to stop rotating. At this time, the filter net can filter the air entering the air conditioner from the air inlet;

[0031] S7. The controller controls the air conditioner to turn on the cooling mode and controls the second driving motor to rotate, so that the brush repeatedly contacts the evaporator, and the condensed water generated by the evaporator cleans the brush until the cleaning of the brush is completed;

[0032] Further optionally, after step S7, it further includes:

[0033] S8. The controller controls the air conditioner to turn on the heating mode and controls the second driving motor to rotate, so that the brush repeatedly contacts the evaporator to evaporate the water on the brush by using the heat generated by the evaporator.

[0034] Further optionally, after step S8, it further includes:

[0035] S9. The controller controls the second driving motor to rotate, so that the brush is separated from the evaporator and the filter net assembly.

[0036] The present invention provides a cleaning mechanism for an air conditioner, which has a filter net assembly and a brush assembly. The filter net assembly is arranged between below the air inlet of the air conditioner and in front of the evaporator, and the brush assembly is arranged between the evaporator of the air conditioner and the filter net assembly. Under the action of the first driving motor, the gear-rack mechanism drives the filter net to move along the arc-shaped frame to the front of the brush. Under the action of the second driving motor, the brush contacts and cleans the filter net. When the above cleaning mechanism is applied to the air conditioner, the air conditioner controller controls the first driving motor to rotate, so that the filter net moves reciprocally between the first cleaning position and the second cleaning position, and the controller controls the second driving motor to act, so that the brush contacts and cleans the filter net. After cleaning, the condensed water generated by the air conditioner evaporator can be controlled to wash the brush, and the heat generated by the evaporator can be controlled to dry the brush. The present invention uses a brush to clean the dust on the surface of the filter net, avoiding the influence of washing the filter net on the electrical components of the air conditioner. The condensed water and heat generated by the evaporator are used to further clean and dry the brush, avoiding the generation of bacteria on the surface of the brush and prolonging the service life of the brush. The structure is simple, the degree of automation is high, and the cleaning effect on the filter net is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extending according to the provided drawings without creative efforts.

[0038] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope covered by the technical content disclosed in the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved.

[0039] Figure 1 It is a schematic structural diagram of an air conditioner embodiment provided by the present invention;

[0040] Figure 2a It is a schematic structural diagram of an air conditioner embodiment when cleaning the filter net provided by the present invention;

[0041] Figure 2b It is a schematic structural diagram of an air conditioner embodiment when cleaning the brush provided by the present invention;

[0042] Figure 3 It is a schematic structural diagram of an air conditioner embodiment when the brush is in a vertical position provided by the present invention;

[0043] In the figure:

[0044] 1 - Filter screen assembly; 11 - Driving gear; 12 - Driven gear; 13 - Rack

[0045] 2 - Brush assembly; 21 - Brush; 22 - Second driving motor

[0046] 3 - Arc-shaped frame

[0047] 4 - Air conditioner; 41 - Housing; 411 - Air inlet; 412 - Dust collection box; 42 - Evaporator Specific implementation mode

[0048] The following specific embodiments illustrate the implementation mode of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0049] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0050] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0051] It should also be noted that the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such commodity or system. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0052] The cleaning mechanism for an air conditioner provided by the present invention includes a filter screen assembly and a brush assembly. The filter screen assembly is disposed between the lower part of the air inlet of the air conditioner and the front of the evaporator, and the brush assembly is disposed between the evaporator of the air conditioner and the filter screen assembly. Under the action of the first driving motor, the gear-rack mechanism drives the filter screen to move along the arc-shaped frame to the front of the brush. Under the action of the second driving motor, the brush contacts and cleans the filter screen. When the above cleaning mechanism is applied to the air conditioner, the air conditioner controller controls the first driving motor to rotate, so that the filter screen moves reciprocally between the first cleaning position and the second cleaning position, and the controller controls the second driving motor to act, so that the brush contacts and cleans the filter screen. After cleaning, the condensed water generated by the air conditioner evaporator can be controlled to wash the brush, and the heat generated by the evaporator can be controlled to dry the brush.

[0053] Embodiment

[0054] <Cleaning mechanism>

[0055] As Figure 1 As shown in the figure, this embodiment provides a cleaning mechanism for an air conditioner, where the air conditioner 4 has a housing 41 and an evaporator 42, and an air inlet 411 is provided at the top of the housing 41. The cleaning mechanism includes a filter screen assembly 1 and a brush assembly 2. The filter screen assembly 1 is disposed between the lower part of the air inlet 411 and the front of the evaporator 42, and has a filter screen and a first driving device. The first driving device drives the filter screen to move to the lower part of the air inlet 411 or the front of the evaporator 42, and moves in a one-way circular motion or a two-way reciprocating motion between the lower part of the air inlet 411 and the front of the evaporator 42. The brush assembly 2 is disposed between the evaporator 42 and the filter screen assembly 1, and has a brush 21 and a second driving device. When the first driving device drives the filter screen to move in front of the brush 21, the second driving device drives the brush 21 to move, so that the brush 21 contacts and cleans the filter screen.

[0056] Preferably, the first driving device has a first driving motor and a gear-rack mechanism. The gear-rack mechanism has a driving gear 11, a driven gear 12 and a rack 13. The first driving motor is drivingly connected to the driving gear 11 and drives the driving gear 11 to move. The driving gear 11 or the driven gear 12 is disposed under the air inlet 411, and the driven gear 12 or the driving gear 11 is disposed in front of the evaporator 42. The rack 13 is disposed around the driving gear 11 and the driven gear 12, and one end thereof meshes with the driving gear 11 and the other end meshes with the driven gear 12. The driving gear 11 drives the rack 13 to move in a one-way circular motion or a two-way reciprocating motion between the driving gear 11 and the driven gear 12. In addition, in order to make the filter screen move quickly and stably, two driving gears can be provided to jointly drive the rack to move.

[0057] Specifically, the rack 13 is made of a flexible material, is in an annular structure and surrounds between the driving gear 11 and the driven gear 12. A rack is provided on its inner ring, one end meshes with the driving gear 11, and the other end meshes with the driven gear 12. When the driving gear 11 rotates, the driving gear 11 drives the rack 13 to move towards the driven gear 12. The rack 13 meshes with the driven gear 12, and the driven gear 12 drives the rack 13 to move towards the driving gear 11, so that the rack 13 can reciprocate cyclically between the driving gear 11 and the driven gear 12.

[0058] It should be noted that the first driving device is not limited to the gear-rack mechanism, and can also be a pulley mechanism or a sprocket mechanism, and these mechanisms can all drive the filter screen to move between below the air inlet and in front of the evaporator.

[0059] Preferably, the filter screen is fixed to the rack 13. Specifically, the size of the filter screen corresponds to the size of the air inlet 411 and is connected to the rack 13 through a detachable structure, which is convenient for replacing the filter screen. Under the action of the first driving motor, the driving gear 11 drives the rack 13 to move. The rack 13 moves annularly between the driving gear 11 and the driven gear 12, and the filter screen moves accordingly and can move from below the air inlet 411 to in front of the brush 21 or from in front of the brush 21 to below the air inlet 411. When it moves in front of the brush 21 and contacts the brush 21, the brush 21 can clean the filter screen.

[0060] Preferably, the filter screen assembly 1 further has an arc-shaped frame 3, which is arranged on the housing 41 and is located between the driving gear 11 and the driven gear 12. The cross-sectional shape of the arc-shaped frame 3 corresponds to the cross-sectional shape of the housing 41 and forms an annular structure surrounding between the driving gear 11 and the driven gear 12. The rack 13 can be clamped in the arc-shaped frame 3, so that the arc-shaped frame 3 plays a limiting role on the rack 13, and further the rack 13 can move along a fixed track.

[0061] Preferably, guide rails or guide grooves are provided on the arc-shaped frame 3. Correspondingly, guide grooves or guide rails are provided on the rack 13. The guide rails on the arc-shaped frame 13 cooperate with the guide grooves on the rack 13, or the guide grooves on the arc-shaped frame 13 cooperate with the guide rails on the rack 13, so that the rack 13 can move along the annular structure of the arc-shaped frame 3, ensuring the stable movement of the rack 13.

[0062] Preferably, under the action of the first driving motor, the rack 13 meshes with the driving gear 11 and the driven gear 12, and the guide rails and the guide grooves cooperate, so that the rack 13 moves along the arc-shaped frame 3. Further, the filter screen can move from below the air inlet 411 to in front of the brush 21. At this time, the brush 21 can clean the filter screen; or move from in front of the brush 21 to below the air inlet 411, and the filter screen can filter the air entering the air conditioner 4 from the air inlet 411.

[0063] Preferably, the second driving device has a second driving motor 22, and the output shaft of the second driving motor 22 is drivingly connected to the brush 21; under the action of the second driving motor 22, the brush 21 can contact the filter screen and clean the filter screen; specifically, the brush 21 has a sector-shaped cross-section or a quarter-circular structure. Under the action of the second motor 22, it can turn right to contact the filter screen assembly 1 and turn left to contact the evaporator 42. When in the vertical state, it does not contact the filter screen assembly 1 or the evaporator 42.

[0064] <Air conditioner>

[0065] As Figure 2a and 2b As shown, this embodiment provides an air conditioner, which has a housing 41, an evaporator 42, a controller, a detection module, and the cleaning mechanism for an air conditioner described in any one of the above; an air inlet is provided at the top of the housing 41; the filter screen assembly 1 is arranged between the lower part of the air inlet 411 and the front of the evaporator 42; specifically, it is formed into an arc structure; the brush assembly 2 is arranged between the evaporator 42 and the filter screen assembly 1, facilitating the brush 21 to clean the filter screen and the self-cleaning of the brush 21; the detection module has a position sensor for detecting the position of the filter screen; specifically, the position sensor is arranged between the brush 21 and the filter screen assembly 1;

[0066] The controller is electrically connected to the first driving motor, the second driving motor 22, and the detection module respectively, receives the data transmitted by the detection module, and controls the actions of the first driving motor and the second driving motor 22 to make the brush 21 clean the filter screen; in addition, the controller can control the second driving motor 22 to drive the brush 21 to rotate for cleaning and drying the brush 21.

[0067] Preferably, the filter screen moves with the rack 13 driven by the driving gear 11 and can move to the lower part of the air inlet 411 and the front of the evaporator 42; in order to ensure the integrity of cleaning the filter screen, when the filter screen moves to the front of the evaporator 42, the filter screen is set to have a first cleaning position and a second cleaning position; when the filter screen is in the first cleaning position, the front boundary of the filter screen is in front of the brush 21; when the filter screen is in the second cleaning position, the rear boundary of the filter screen is in front of the brush 21;

[0068] Along the moving direction of the filter screen, the two ends of the filter screen are respectively the front boundary and the rear boundary of the filter screen. The first to reach in front of the brush is the front boundary of the filter screen, and the last to reach in front of the brush is the rear boundary of the filter screen; when the front boundary of the filter screen moves in front of the brush, the filter screen is in the first cleaning position; when the rear boundary of the filter screen moves in front of the brush, the filter screen is in the second cleaning position.

[0069] Preferably, the controller controls the first drive motor to rotate, the driving gear 11 drives the rack 13 to move forward along the arc-shaped frame 3, and the filter screen moves with the rack 13 and moves from below the air inlet 411 to the first cleaning position; when the filter screen moves to the first cleaning position, the position sensor transmits the data to the controller; the controller controls the second drive motor 22 to drive the brush 21 to rotate, so that the brush 21 contacts and cleans the filter screen; the filter screen continues to move to the second cleaning position;

[0070] When the filter screen moves to the second cleaning position, the position sensor transmits the data to the controller; the controller controls the first drive motor to rotate in the reverse direction, the driving gear 11 drives the rack 13 to move back along the arc-shaped frame 3, and the brush 21 cleans the filter screen; the filter screen continues to move to the first cleaning position;

[0071] When the filter screen moves to the first cleaning position again, the position sensor transmits the data to the controller; the controller controls the first drive motor to rotate, the driving gear 11 drives the rack 13 to move forward along the arc-shaped frame 3, and the brush 21 cleans the filter screen.

[0072] Preferably, after the cleaning of the filter screen is completed, the controller controls the first drive motor to rotate, the driving gear 11 drives the rack 13 to move forward along the arc-shaped frame 3, and the filter screen moves with the rack 13 to below the air inlet 411; when the filter screen moves to below the air inlet 411, the controller controls the first drive motor to stop rotating, and at this time, the filter screen can filter the air entering the air conditioner 4 from the air inlet 411.

[0073] Preferably, after the cleaning of the filter screen is completed, the controller controls the air conditioner 4 to turn on the cooling mode; the controller controls the second drive motor 22 to rotate, so that the brush 21 repeatedly contacts the evaporator 42, and the condensed water generated by the evaporator 42 cleans the brush 21.

[0074] Preferably, after the cleaning of the brush 21 is completed, the controller controls the air conditioner 4 to turn on the heating mode; the controller controls the second drive motor 22 to rotate, so that the brush 21 repeatedly contacts the evaporator 42, and the heat generated by the evaporator 42 can evaporate the water on the brush 21, preventing bacteria from growing on the brush 21.

[0075] Preferably, a dust collection box 412 and a water collection box are provided on the housing 41, below the brush 21. The dust collection box 412 is used to collect the dust dripping when the brush 21 cleans the filter screen; the water collection box is used to collect the condensed water when the brush 21 is cleaned.

[0076] As Figure 1 shown, after cleaning and drying the brush 21, the controller controls the second drive motor 22 to rotate, so that the brush 21 moves downward and separates from the evaporator 42 and the filter screen assembly 1;

[0077] Another embodiment, as Figure 3As shown, after cleaning and drying the brush 21, the controller controls the second drive motor 22 to rotate, causing the brush 21 to move upward and separate from the evaporator 42 and the filter screen assembly 1.

[0078] <Control method>

[0079] This embodiment provides a control method for an air conditioner as described in any one of the above. The method for the air conditioner 4 to clean the filter screen includes:

[0080] S1. The controller controls the first drive motor to rotate, causing the driving gear 11 to drive the rack 13 to move forward along the arc-shaped frame 3. As a result, the filter screen moves from below the air inlet 411 to the first cleaning position.

[0081] S2. When the filter screen moves to the first cleaning position, the controller receives the data transmitted by the position sensor and controls the second drive motor 22 to drive the brush 21 to rotate, causing the brush 21 to contact and clean the filter screen; the filter screen continues to move to the second cleaning position.

[0082] S3. When the filter screen moves to the second cleaning position, the controller receives the data transmitted by the position sensor and controls the first drive motor to rotate in the reverse direction. The driving gear 11 drives the rack 13 to move backward along the arc-shaped frame 3, and the brush 21 cleans the filter screen; the filter screen continues to move to the first cleaning position.

[0083] S4. When the filter screen moves to the first cleaning position again, the controller receives the data transmitted by the position sensor and controls the first drive motor to rotate. The driving gear 11 drives the rack 13 to move forward along the arc-shaped frame 3, and the brush 21 cleans the filter screen; the filter screen continues to move to the second cleaning position.

[0084] S5. Repeat steps S3 and S4 until the cleaning of the filter screen is completed.

[0085] S6. The controller controls the first drive motor to rotate. The driving gear 11 drives the rack 13 to move forward along the arc-shaped frame 3; when the filter screen moves below the air inlet 411, the controller controls the first drive motor to stop rotating. At this time, the filter screen can filter the air entering the air conditioner 4 from the air inlet 411.

[0086] S7. The controller controls the air conditioner 4 to turn on the cooling mode and controls the second drive motor 22 to rotate, causing the brush 21 to repeatedly contact the evaporator 42. The condensed water generated by the evaporator 42 cleans the brush 21 until the cleaning of the brush 21 is completed.

[0087] S8. The controller controls the air conditioner 4 to turn on the heating mode and controls the second drive motor 22 to rotate, causing the brush 21 to repeatedly contact the evaporator 42. The heat generated by the evaporator 42 evaporates the water on the brush 21, preventing bacteria from growing on the brush 21.

[0088] S9. The controller controls the second drive motor 22 to rotate, so that the brush 21 is separated from the evaporator 42 and the filter assembly 1.

[0089] The exemplary embodiments of the present disclosure have been specifically illustrated and described above. It should be understood that the present disclosure is not limited to the detailed structures, arrangements or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An air conditioner, characterized in that, the air conditioner has a housing, an evaporator, a filter screen assembly, a brush assembly, a controller and a detection module; an air inlet is provided at the top of the housing, and the evaporator is arranged inside the housing and below the air inlet; the filter screen assembly is arranged between below the air inlet and in front of the evaporator, and has a first driving device and a filter screen; the first driving device has a first driving motor, a driving gear, a driven gear and a rack, the first driving motor is drivingly connected to the driving gear, and one of the driving gear and the driven gear is arranged below the air inlet, and the other is arranged in front of the evaporator; the rack surrounds between the driving gear and the driven gear, and both ends of the rack are respectively meshed with the driving gear and the driven gear; the filter screen is arranged on the rack; the brush assembly has a second driving device and a brush, the second driving device has a second driving motor, and the output shaft of the second driving motor is drivingly connected to the brush; the brush is movably arranged between the evaporator and the filter screen; the detection module has a position sensor for detecting the position of the filter screen; the controller is electrically connected to the first driving motor, the second driving motor and the detection module respectively; the controller receives the data transmitted by the detection module and controls the actions of the first driving motor and the second driving motor. Further, under the action of the first driving motor, the driving gear drives the rack to move, so that the filter screen makes a one-way circular motion or a two-way reciprocating motion between below the air inlet and in front of the evaporator; under the action of the second driving motor, the brush contacts and cleans the filter screen.

2. The air conditioner according to claim 1, characterized in that, the filter screen assembly further has an arc-shaped frame, the arc-shaped frame is arranged on the housing and between the driving gear and the driven gear; the cross-sectional shape of the arc-shaped frame corresponds to the cross-sectional shape of the housing; the arc-shaped frame plays a role in limiting the rack, so that the rack can move along a fixed track.

3. The air conditioner according to claim 2, characterized in that, a guide rail or a guide groove is provided on the arc-shaped frame, and correspondingly, a guide groove or a guide rail is provided on the rack; the guide rail cooperates with the guide groove, so that the rack can move along the arc-shaped frame.

4. The air conditioner according to claim 3, characterized in that, under the action of the first driving motor, the rack is meshed with the driving gear and the driven gear, and the guide rail cooperates with the guide groove, so that the rack moves along the arc-shaped frame. Further, the filter screen can move from below the air inlet to in front of the brush or from in front of the brush to below the air inlet, realizing that the brush cleans the filter screen and the filter screen filters the air at the air inlet.

5. The air conditioner according to claim 2, characterized in that, The filter screen has a first cleaning position and a second cleaning position; when the filter screen is in the first cleaning position, the front boundary of the filter screen is in front of the brush; when the filter screen is in the second cleaning position, the rear boundary of the filter screen is in front of the brush.

6. The air conditioner according to claim 5, wherein, the controller controls the first drive motor to rotate, and the driving gear drives the rack to move forward along the arc-shaped frame; when the filter screen moves to the first cleaning position, the position sensor transmits data to the controller; the controller controls the second drive motor to drive the brush to rotate, so that the brush contacts and cleans the filter screen; when the filter screen moves to the second cleaning position, the position sensor transmits data to the controller; the controller controls the first drive motor to rotate in the reverse direction, the driving gear drives the rack to move back along the arc-shaped frame, and the brush cleans the filter screen; when the filter screen moves to the first cleaning position again, the position sensor transmits data to the controller; the controller controls the first drive motor to rotate, the driving gear drives the rack to move forward along the arc-shaped frame, and the brush cleans the filter screen.

7. The air conditioner according to claim 6, wherein, after the cleaning of the filter screen is completed, the controller controls the first drive motor to rotate, and the driving gear drives the rack to move forward along the arc-shaped frame; when the filter screen moves below the air inlet, the controller controls the first drive motor to stop rotating, and at this time the filter screen can filter the air entering the air conditioner from the air inlet.

8. The air conditioner according to claim 6, wherein, after the cleaning of the filter screen is completed, the controller controls the air conditioner to turn on the cooling mode; the controller controls the second drive motor to rotate, so that the brush repeatedly contacts the evaporator, so as to use the condensed water generated by the evaporator to clean the brush.

9. The air conditioner according to claim 8, wherein, after the cleaning of the brush is completed, the controller controls the air conditioner to turn on the heating mode; the controller controls the second drive motor to rotate, so that the brush repeatedly contacts the evaporator, so that the water on the brush is evaporated.

10. The air conditioner according to claim 2, wherein, a dust collection box is provided on the housing, and the dust collection box is located below the brush for collecting the dust dripping when the brush cleans the filter screen.

11. A control method for an air conditioner according to any one of claims 2-10, wherein, the method for the air conditioner to clean the filter screen includes: S1. The controller controls the first drive motor to rotate, so that the driving gear drives the rack to move forward along the arc-shaped frame, and further the filter screen moves from below the air inlet to the first cleaning position; S2. When the filter net moves to the first cleaning position, the controller receives the data transmitted by the position sensor and controls the second drive motor to drive the brush to rotate, so that the brush contacts and cleans the filter net; the filter net continues to move towards the second cleaning position; S3. When the filter net moves to the second cleaning position, the controller receives the data transmitted by the position sensor and controls the first drive motor to rotate in the reverse direction. The driving gear drives the rack to move back along the arc-shaped frame, and the brush cleans the filter net; the filter net continues to move towards the first cleaning position; S4. When the filter net moves to the first cleaning position again, the controller receives the data transmitted by the position sensor and controls the first drive motor to rotate. The driving gear drives the rack to move forward along the arc-shaped frame, and the brush cleans the filter net; the filter net continues to move towards the second cleaning position; S5. Repeat steps S3 and S4 until the cleaning of the filter net is completed.

12. The control method of the air conditioner according to claim 11, wherein, after step S5, it further includes: S6. The controller controls the first drive motor to rotate. The driving gear drives the rack to move forward along the arc-shaped frame; when the filter net moves below the air inlet, the controller controls the first drive motor to stop rotating. At this time, the filter net can filter the air entering the air conditioner from the air inlet; S7. The controller controls the air conditioner to turn on the cooling mode and controls the second drive motor to rotate, so that the brush repeatedly contacts the evaporator, so as to use the condensed water generated by the evaporator to clean the brush until the cleaning of the brush is completed.

13. The control method of the air conditioner according to claim 12, wherein, after step S7, it further includes: S8. The controller controls the air conditioner to turn on the heating mode and controls the second drive motor to rotate, so that the brush repeatedly contacts the evaporator, so as to use the heat generated by the evaporator to evaporate the water on the brush.

14. The control method of the air conditioner according to claim 13, wherein, after step S8, it further includes: S9. The controller controls the second drive motor to rotate, so that the brush is separated from the evaporator and the filter net assembly.

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