Air conditioning and control method

Abstract

The present application relates to the field of household appliances, and more specifically, to an air conditioner and a control method, including controlling any one of the upper and lower fans to be in a start-up state and the other fan to be in a stop state in response to a cleaning signal; controlling the flow path control mechanism to operate so that a third flow path is formed between the upper and lower fans based on the intermediate air flow channel; and controlling the operation mode of the air conditioner and the temperature of the indoor heat exchanger according to preset sterilization parameters so that the air flow in the third flow path exchanges heat with the indoor heat exchanger to clean the air conditioner. A third flow path is formed inside the air conditioner, and the air flow drives the dust in the third flow path after flowing along the third flow path, so that the dust can be collected and cleaned in the third flow path. The self-cleaning of the air conditioner is realized, which helps to reduce the dust inside the air conditioner, avoid the generation of odor, and improve the user experience of the air conditioner.

Description

Technical Field

[0001] The present application relates to the field of household electrical appliances, and more specifically, to an air conditioner and a control method thereof. Background Art

[0002] Current air conditioners usually choose different air outlet directions for cooling and heating to improve the cooling and heating effects. The usual practice is to discharge air from the upper air outlet of the air conditioner during cooling and from the lower air outlet of the air conditioner during heating. During the use of the air conditioner, dust will inevitably enter the air outlet and the inside of the air conditioner, causing bacteria to grow due to the dust, causing the air flow of the air conditioner to carry odors, and reducing the use experience of the air conditioner. Summary of the invention

[0003] The present application provides an air conditioner and a control method to at least solve the technical problem that the user experience of the air conditioner is reduced due to dust.

[0004] According to a first aspect of an embodiment of the present application, an air conditioner is provided, the air conditioner being provided with an upper air outlet, a lower air outlet, and an air duct communicating with the upper air outlet and the lower air outlet, and an indoor heat exchanger, a flow path control mechanism, an upper fan, and a lower fan arranged on the air duct, wherein:

[0005] The upper fan is arranged corresponding to the upper air outlet, and the lower fan is arranged corresponding to the lower air outlet;

[0006] The air conditioner is provided with a cooling mode and a heating mode, and the flow path control mechanism is used to control the air duct to form different flow paths under different operation modes of the air conditioner;

[0007] When the air conditioner is in the cooling mode, the flow path control mechanism controls the air duct to form a first flow path connecting the upper air outlet and the lower air outlet inside the air conditioner, and at least one of the upper fan and the lower fan provides power for the airflow to flow from the lower air outlet to the upper air outlet in the first flow path;

[0008] When the air conditioner is in the heating mode, the flow path control mechanism controls the air duct to form a second flow path connecting the upper air port and the lower air port inside the air conditioner, and at least one of the upper fan and the lower fan provides power for the airflow to flow from the upper air port to the lower air port in the second flow path;

[0009] The air conditioner further comprises a controller configured to:

[0010] In response to a cleaning signal, the flow path control mechanism is controlled to operate and one of the upper fan and the lower fan is turned on, so that a third flow path of a closed cycle is formed in the air duct;

[0011] The operating mode of the air conditioner and the temperature of the indoor heat exchanger are controlled according to preset sterilization parameters, so that the airflow flowing in the third flow path cleans the air conditioner after heat exchange with the indoor heat exchanger under multiple operating modes.

[0012] Optionally, the air conditioner further comprises a shell, the upper portion of the shell is provided with the upper air vent, the upper air vent can be controlled to be opened or closed, and the lower portion of the shell is provided with the lower air vent, the lower air vent can be controlled to be opened or closed;

[0013] The indoor heat exchanger is located in the housing and is used as an evaporator when the air conditioner is cooling and as a condenser when the air conditioner is heating; the indoor heat exchanger includes an air inlet side and an air outlet side, and the upper air inlet and the lower air inlet are both connected to the air inlet side of the indoor heat exchanger to form an air inlet flow channel;

[0014] The upper fan and the lower fan are both arranged on the air outlet side of the indoor heat exchanger;

[0015] The upper fan comprises a first axial air port, a first air port and a second air port, wherein the first axial air port is opened in the axial direction of the upper fan, and the first air port and the second air port are opened in the radial direction of the upper fan; the first axial air port is connected to the air outlet side of the indoor heat exchanger, and is used to introduce the airflow on the air outlet side of the indoor heat exchanger into the first axial air port and discharge it from the first air port and / or the second air port after the upper fan is started;

[0016] The lower fan comprises a third axial air port, a third air port and a fourth air port, wherein the third axial air port is opened in the axial direction of the lower fan, and the third air port and the fourth air port are opened in the radial direction of the lower fan; the third axial air port is connected to the air outlet side of the indoor heat exchanger, and is used for introducing the airflow on the air outlet side of the indoor heat exchanger into the third axial air port and discharging it from the third air port and / or the fourth air port after the upper fan is started;

[0017] an isolation plate, located in the housing, the isolation plate connects the first air outlet, the second air outlet, the third air outlet, the fourth air outlet, the upper air outlet and the lower air outlet to form a ventilation flow channel, so that the airflow discharged by the upper fan and / or the lower fan flows out from the upper air outlet or the lower air outlet along the ventilation flow channel;

[0018] The ventilation flow channel includes a first upper ventilation flow channel connecting the first air outlet and the upper air outlet, a second upper ventilation flow channel connecting the second air outlet and the upper air outlet, a first lower ventilation flow channel connecting the third air outlet and the lower air outlet, a second lower ventilation flow channel connecting the fourth air outlet and the lower air outlet, and a middle ventilation flow channel connecting the second air outlet and the fourth air outlet;

[0019] The flow path control mechanism includes a first switch mechanism, which is located in the housing and is used to control the first upper ventilation flow channel and / or the second upper ventilation flow channel to be turned on or off;

[0020] The flow path control mechanism includes a second switch mechanism located in the housing and used to control the opening or closing of the first lower ventilation flow channel and / or the second lower ventilation flow channel.

[0021] Optionally, the upper fan includes a first volute and a first fan blade, the first fan blade is arranged in the first volute, a first volute tongue is slidably provided on the outer peripheral surface of the first volute, the first volute tongue is used to block the first air outlet or the second air outlet, and when the first volute tongue blocks the first air outlet, the first upper ventilation flow channel is blocked;

[0022] The first switch mechanism includes a first baffle, the first baffle includes a first working position and a second working position, when the first baffle is in the first working position, the second upper ventilation flow channel is connected, and when the first baffle is in the second working position, the second upper ventilation flow channel is blocked;

[0023] The lower fan comprises a second volute and a second fan blade, the second fan blade is arranged in the second volute, a second volute tongue is slidably arranged on the outer peripheral surface of the second volute, the second volute tongue is used to block the third air outlet or the fourth air outlet, and when the second volute tongue blocks the third air outlet, the first lower ventilation flow channel is blocked;

[0024] The second switch mechanism includes a second baffle, and the second baffle includes a third working position and a fourth working position. When the second baffle is located at the third working position, the second lower ventilation channel is opened, and when the second baffle is located at the fourth working position, the second lower ventilation channel is blocked.

[0025] Optionally, the upper fan is further provided with a second axial air outlet in the axial direction, and the lower fan is further provided with a fourth axial air outlet in the axial direction;

[0026] A connecting cavity is formed on the isolation plate, and the connecting cavity connects the air outlet side of the indoor heat exchanger with the second axial air outlet, and connects the air outlet side of the indoor heat exchanger with the fourth axial air outlet, so that the airflow on the air outlet side of the indoor heat exchanger at least partially enters the first axial air outlet and the third axial air outlet, and at least partially enters the second axial air outlet and the fourth axial air outlet through the connecting cavity.

[0027] Optionally, the connecting cavity includes a first through cavity and a second through cavity, the first through cavity is located above the upper fan, and the second through cavity is located below the lower fan, the first through cavity divides part of the ventilation flow channel above the upper fan into the first upper ventilation flow channel and the second upper ventilation flow channel, and the second through cavity divides part of the ventilation flow channel below the lower fan into the first lower ventilation flow channel and the second lower ventilation flow channel.

[0028] Optionally, one end of the first baffle is rotatably connected to the isolation plate, and when the first baffle is located at the second working position, the other end of the first baffle abuts against the cavity wall of the first through cavity to block the second upper ventilation flow channel;

[0029] One end of the second baffle is rotatably connected to the isolation plate. When the second baffle is located at the fourth working position, the other end of the second baffle abuts against the cavity wall of the second through cavity to block the second lower ventilation channel.

[0030] Optionally, the isolation plate is provided with a first communication port and a second communication port;

[0031] The first connecting port is arranged at one side of the second upper ventilation flow channel, and the first baffle is arranged at the first connecting port. When the first baffle is located at the first working position, the second upper ventilation flow channel is opened and the first connecting port is blocked. When the first baffle is located at the second working position, the second upper ventilation flow channel is blocked and the air inlet flow channel is connected with the ventilation flow channel.

[0032] The second connecting port is arranged at one side of the second lower ventilation channel, and the second baffle is arranged at the second connecting port. When the second baffle is located at the third working position, the second lower ventilation channel is opened and the second connecting port is blocked. When the second baffle is located at the fourth working position, the second lower ventilation channel is blocked and the air inlet channel is connected with the ventilation channel.

[0033] According to a second aspect of an embodiment of the present application, a self-cleaning control method for an air conditioner is provided, wherein the air conditioner is provided with an upper air outlet, a lower air outlet, and an air duct connected to the upper air outlet and the lower air outlet, and an indoor heat exchanger, a flow path control mechanism, an upper fan, and a lower fan arranged on the air duct, wherein:

[0034] The upper fan is arranged corresponding to the upper air outlet, and the lower fan is arranged corresponding to the lower air outlet;

[0035] The air conditioner is provided with a cooling mode and a heating mode, and the flow path control mechanism is used to control the air duct to form different flow paths under different operation modes of the air conditioner;

[0036] When the air conditioner is in the cooling mode, the flow path control mechanism controls the air duct to form a first flow path connecting the upper air outlet and the lower air outlet inside the air conditioner, and at least one of the upper fan and the lower fan provides power for the airflow to flow from the lower air outlet to the upper air outlet in the first flow path;

[0037] When the air conditioner is in the heating mode, the flow path control mechanism controls the air duct to form a second flow path connecting the upper air port and the lower air port inside the air conditioner, and at least one of the upper fan and the lower fan provides power for the airflow to flow from the upper air port to the lower air port in the second flow path;

[0038] The self-cleaning control method comprises:

[0039] In response to a cleaning signal, the flow path control mechanism is controlled to operate and one of the upper fan and the lower fan is turned on, so that a third flow path of a closed cycle is formed in the air duct;

[0040] The operating mode of the air conditioner and the temperature of the indoor heat exchanger are controlled according to preset sterilization parameters, so that the airflow flowing in the third flow path cleans the air conditioner after heat exchange with the indoor heat exchanger under multiple operating modes.

[0041] Optionally, controlling the operating mode of the air conditioner and the temperature of the indoor heat exchanger according to preset sterilization parameters so that the airflow flowing in the third flow path cleans the air conditioner after heat exchange with the indoor heat exchanger under the plurality of operating modes includes:

[0042] Controlling the air conditioner to operate in a cooling mode according to the sterilization parameter, and controlling the speed of the fan in the startup state to raise the temperature of the indoor heat exchanger to a third preset temperature, so that condensation water is generated and frost forms in the third flow path;

[0043] The air conditioner is controlled to operate in a heating mode according to the sterilization parameters, and the speed of the fan in the start-up state is controlled to raise the temperature of the indoor heat exchanger to a fourth preset temperature, so that the airflow flowing in the third flow path melts the frosted condensation water after heat exchange with the indoor heat exchanger, thereby cleaning the air conditioner, wherein the third preset temperature is greater than the fourth preset temperature.

[0044] Optionally, controlling the air conditioner to operate in a cooling mode according to the sterilization parameter, and controlling the speed of the fan in the startup state to raise the temperature of the indoor heat exchanger to a third preset temperature, so that condensation water is generated and frost forms in the third flow path, comprises:

[0045] Controlling the air conditioner to operate in a cooling mode according to the sterilization parameter, controlling the fan in the startup state to a first speed, so as to increase the temperature of the indoor heat exchanger to a first preset temperature, wherein the first preset temperature is lower than the dew point temperature of the air, so that the airflow flowing in the third flow path generates condensed water after heat exchange with the indoor heat exchanger;

[0046] The fan in the start-up state is controlled to have a second speed so as to raise the temperature of the indoor heat exchanger to a second preset temperature so as to cause condensation water to frost, and when the temperature of the indoor heat exchanger reaches a third preset temperature, the cooling mode is exited, wherein the first preset temperature is greater than the second preset temperature, and the second preset temperature is greater than the third preset temperature.

[0047] Optionally, controlling the air conditioner to operate in a heating mode according to the sterilization parameter, and controlling the speed of the fan in the start-up state to raise the temperature of the indoor heat exchanger to a fourth preset temperature, so that the airflow flowing in the third flow path exchanges heat with the indoor heat exchanger to melt frosted condensed water, thereby cleaning the air conditioner, comprises:

[0048] Controlling the air conditioner to operate in a heating mode according to the sterilization parameter, controlling the fan in the start-up state to rotate at a third speed, so as to increase the temperature of the indoor heat exchanger to a defrosting temperature, so as to melt the frost in the third flow path;

[0049] The fan in the start-up state is controlled to have a fourth speed so as to raise the temperature of the indoor heat exchanger to a fourth preset temperature so as to dry the condensed water formed after melting.

[0050] Optionally, the third flow path includes a first sub-flow path, a second sub-flow path and a third sub-flow path;

[0051] The method comprises:

[0052] The controlling the first switch mechanism and / or the second switch mechanism to operate so that a third flow path is formed between the upper fan and the lower fan based on the middle air flow path includes:

[0053] The first baffle is controlled to be located at the second working position, the second baffle is controlled to be located at the third working position, the first volute tongue blocks the first air outlet, the second volute tongue blocks the fourth air outlet, and the lower air outlet is closed, and the first sub-flow path is formed between the second air outlet, the middle ventilation flow channel, the second lower ventilation flow channel, the first lower ventilation flow channel, the third air outlet, one or all of the third axial air outlet and the fourth axial air outlet, and one or all of the first axial air outlet and the fourth axial air outlet,

[0054] Or, the first baffle is controlled to be located at the first working position, the second baffle is controlled to be located at the fourth working position, the first volute tongue blocks the second air outlet, the second volute tongue blocks the third air outlet, and the upper air outlet is closed, so that the second sub-flow path is formed between the fourth air outlet, the middle ventilation flow channel, the second upper ventilation flow channel, the first upper ventilation flow channel, the first air outlet, one or all of the first axial air outlet and the fourth axial air outlet, and one or all of the third axial air outlet and the fourth axial air outlet,

[0055] Or, control the first baffle to be located at the second working position, the second baffle to be located at the fourth working position, the first volute tongue to block the first air outlet, and the second volute tongue to block the third air outlet, and form the third sub-flow path between the second air outlet, the central air flow channel, the fourth air outlet, one or all of the third axial air outlet and the fourth axial air outlet, and one or all of the first axial air outlet and the fourth axial air outlet.

[0056] Optionally, the method further comprises:

[0057] In response to the heating signal, the upper fan is controlled to start, the lower fan is controlled to start, the first baffle is located at the second working position, the second baffle is located at the third working position, the first volute tongue blocks the first air outlet, the second volute tongue blocks the fourth air outlet, and the indoor heat exchanger is used as a condenser, so that the airflow enters the air inlet channel from the upper air outlet and exchanges heat with the indoor heat exchanger, and enters the first axial air outlet, the second axial air outlet, the third axial air outlet and the fourth axial air outlet from the air outlet side of the indoor heat exchanger, part of the airflow is blown out from the second air outlet, flows along the central air flow channel and the second lower air flow channel to the lower air outlet and then blown out, and part of the airflow is blown out from the third air outlet, flows along the first lower air flow channel to the lower air outlet and then blown out;

[0058] In response to the cooling signal, the upper fan is started, the lower fan is started, the first baffle is located at the first working position, the second baffle is located at the fourth working position, the first volute tongue blocks the second air outlet, the second volute tongue blocks the third air outlet, and the indoor heat exchanger is used as an evaporator, so that the airflow enters the air inlet duct from the lower air outlet and exchanges heat with the indoor heat exchanger, and enters the first axial air outlet, the second axial air outlet, the third axial air outlet and the fourth axial air outlet from the air outlet side of the indoor heat exchanger, part of the airflow is blown out from the first air outlet, flows along the first upper ventilation duct to the upper air outlet and then blown out, and part of the airflow is blown out from the fourth air outlet, flows along the middle ventilation duct and the second upper ventilation duct to the upper air outlet and then blown out.

[0059] In the embodiment of the present application, when the air conditioner needs to be cleaned, a cleaning signal is generated, so that the air conditioner controls the upper fan, the lower fan, the flow path control mechanism and the indoor heat exchanger, thereby forming a third flow path inside the air conditioner. After the air flow flows along the third flow path, it drives the dust in the third flow path, which is convenient for centralized collection of dust and cleaning of the dust in the third flow path. The self-cleaning of the air conditioner is realized, which helps to reduce the dust inside the air conditioner, avoid the generation of odor, and improve the use experience of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 The diagram is a schematic diagram of the structure of an air conditioner removing dust from the lower part of a ventilation channel in an embodiment.

[0061] Figure 2 The figure is another structural schematic diagram of an embodiment in which the air conditioner removes dust from the lower part of the ventilation channel.

[0062] Figure 3 The diagram is a schematic diagram of the structure of an air conditioner removing dust from the upper part of a ventilation channel in an embodiment.

[0063] Figure 4 The figure is another structural schematic diagram of an embodiment in which the air conditioner removes dust from the upper part of the ventilation channel.

[0064] Figure 5 The diagram is a schematic diagram of a structure in which an air conditioner performs dust removal on only the upper and lower fans in an embodiment.

[0065] Figure 6 The present invention is another structural schematic diagram of an embodiment in which the air conditioner only removes dust from the upper fan and the lower fan.

[0066] Figure 7 The figure is a flow chart of a self-cleaning control method of an air conditioner in an embodiment.

[0067] Figure 8 4 is another flow chart of the self-cleaning control method of the air conditioner in one embodiment.

[0068] Explanation of reference numerals: 1. housing; 11. upper air outlet; 12. lower air outlet; 13. air inlet channel; 14. ventilation channel; 141. first upper ventilation channel; 142. second upper ventilation channel; 143. first lower ventilation channel; 144. second lower ventilation channel; 145. middle ventilation channel; 2. indoor heat exchanger; 3. upper fan; 31. first axial air outlet; 32. first air outlet; 33. second air outlet; 34. second axial air outlet; 35. first volute tongue; 4. isolation plate; 41. first connecting port; 42. second connecting port; 5. first switch mechanism; 51. first baffle plate; 6. lower fan; 61. third axial air outlet; 62. third air outlet; 63. fourth air outlet; 64. fourth axial air outlet; 65. second volute tongue; 7. second switch mechanism; 71. second baffle plate; 8. connecting cavity; 81. first through cavity; 82. second through cavity. DETAILED DESCRIPTION

[0069] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0070] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0071] According to an embodiment of the present application, an embodiment of an air conditioning and control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0072] The air conditioner provided in this application is Figure 1-6 As shown, the air conditioner is provided with an upper air outlet 11, a lower air outlet 12 and an air duct connected with the upper air outlet 11 and the lower air outlet 12, and an indoor heat exchanger 2, a flow path control mechanism, an upper fan 3 and a lower fan 6 arranged on the air duct, wherein:

[0073] The upper fan 3 is disposed correspondingly to the upper air outlet 11, and the lower fan 6 is disposed correspondingly to the lower air outlet 12;

[0074] The air conditioner is provided with a cooling mode and a heating mode, and the flow path control mechanism is used to control the air duct to form different flow paths under different operation modes of the air conditioner;

[0075] When the air conditioner is in the cooling mode, the flow path control mechanism controls the air duct to form a first flow path connecting the upper air outlet 11 and the lower air outlet 12 inside the air conditioner, and at least one of the upper fan 3 and the lower fan 6 provides power for the airflow to flow from the lower air outlet 12 to the upper air outlet 11 in the first flow path;

[0076] When the air conditioner is in the heating mode, the flow path control mechanism controls the air duct to form a second flow path connecting the upper air outlet 11 and the lower air outlet 12 inside the air conditioner, and at least one of the upper fan 3 and the lower fan 6 provides power for the airflow to flow from the upper air outlet 11 to the lower air outlet 12 in the second flow path;

[0077] The air conditioner further comprises a controller configured to:

[0078] In response to the cleaning signal, the flow path control mechanism is controlled to operate and one of the upper fan 3 and the lower fan 6 is turned on, so that a third flow path of a closed cycle is formed in the air duct;

[0079] The operation mode of the air conditioner and the temperature of the indoor heat exchanger 2 are controlled according to preset sterilization parameters, so that the airflow flowing in the third flow path cleans the air conditioner after heat exchange with the indoor heat exchanger 2 under multiple operation modes.

[0080] Through the above content, when the air conditioner needs to be cleaned, a cleaning signal is generated, so that the air conditioner controls the upper fan 3, the lower fan 6, the flow path control mechanism and the indoor heat exchanger 2, thereby forming a third flow path inside the air conditioner. After the air flow flows along the third flow path, it drives the dust in the third flow path, which is convenient for centralized collection of dust and cleaning of dust in the third flow path. The self-cleaning of the air conditioner is realized, which helps to reduce the dust inside the air conditioner, avoid the generation of odor, and improve the use experience of the air conditioner.

[0081] In another embodiment of the present application, the air conditioner further comprises a housing 1, the upper portion of the housing 1 is provided with the upper air vent 11, the upper air vent 11 can be controlled to be opened or closed, the lower portion of the housing 1 is provided with the lower air vent 12, the lower air vent 12 can be controlled to be opened or closed;

[0082] The indoor heat exchanger 2 is located in the housing 1 and is used as an evaporator when the air conditioner is cooling and as a condenser when the air conditioner is heating; the indoor heat exchanger 2 includes an air inlet side and an air outlet side, and the upper air port 11 and the lower air port 12 are both connected to the air inlet side of the indoor heat exchanger 2 and form an air inlet channel 13;

[0083] The upper fan 3 and the lower fan 6 are both arranged on the air outlet side of the indoor heat exchanger 2;

[0084] The upper fan 3 includes a first axial air port 31, a first air port 32, and a second air port 33, wherein the first axial air port 31 is opened in the axial direction of the upper fan 3, and the first air port 32 and the second air port 33 are opened in the radial direction of the upper fan 3; the first axial air port 31 is connected to the air outlet side of the indoor heat exchanger 2, and is used to introduce the airflow on the air outlet side of the indoor heat exchanger 2 into the first axial air port 31 and discharge it from the first air port 32 and / or the second air port 33 after the upper fan 3 is started;

[0085] The lower fan 6 comprises a third axial air port 61, a third air port 62 and a fourth air port 63, wherein the third axial air port 61 is opened in the axial direction of the lower fan 6, and the third air port 62 and the fourth air port 63 are opened in the radial direction of the lower fan 6; the third axial air port 61 is connected to the air outlet side of the indoor heat exchanger 2, and is used to introduce the airflow on the air outlet side of the indoor heat exchanger 2 into the third axial air port 61 and discharge it from the third air port 62 and / or the fourth air port 63 after the upper fan 3 is started;

[0086] The isolation plate 4 is located in the housing 1, and the isolation plate 4 connects the first air outlet 32, the second air outlet 33, the third air outlet 62, the fourth air outlet 63, the upper air outlet 11 and the lower air outlet 12 to form a ventilation channel 14, so that the airflow discharged by the upper fan 3 and / or the lower fan 6 flows out from the upper air outlet 11 or the lower air outlet 12 along the ventilation channel 14;

[0087] The ventilation channel 14 includes a first upper ventilation channel 141 connecting the first air outlet 32 ​​and the upper air outlet 11, a second upper ventilation channel 142 connecting the second air outlet 33 and the upper air outlet 11, a first lower ventilation channel 143 connecting the third air outlet 62 and the lower air outlet 12, a second lower ventilation channel 144 connecting the fourth air outlet 63 and the lower air outlet 12, and a middle ventilation channel 145 connecting the second air outlet 33 and the fourth air outlet 63;

[0088] The flow path control mechanism includes a first switch mechanism 5, which is located in the housing 1 and is used to control the first upper ventilation flow channel 141 and / or the second upper ventilation flow channel 142 to be turned on or off;

[0089] The flow path control mechanism includes a second switch mechanism 7 located in the housing 1 and used to control the first lower ventilation channel 143 and / or the second lower ventilation channel 144 to be connected or blocked.

[0090] Through the above content, when the air conditioner needs to be cleaned, a cleaning signal is generated, so that the air conditioner controls the upper fan 3, the lower fan 6, the first switch mechanism 5, the second switch mechanism 7 and the indoor heat exchanger 2, thereby forming a third flow path inside the air conditioner. After the air flow flows along the third flow path, it drives the dust in the third flow path, which is convenient for centralized collection of dust and cleaning of dust in the third flow path. The self-cleaning of the air conditioner is realized, which helps to reduce the dust inside the air conditioner, avoid the generation of odor, and improve the use experience of the air conditioner.

[0091] In one embodiment, the upper fan 3 includes a first volute and a first fan blade, the first fan blade is arranged in the first volute, and a first volute tongue 35 is slidably arranged on the outer peripheral surface of the first volute, and the first volute tongue 35 is used to block the first air outlet 32 ​​or the second air outlet 33. When the first volute tongue 35 blocks the first air outlet 32, the first upper ventilation flow channel 141 is blocked;

[0092] The first switch mechanism 5 includes a first baffle 51, and the first baffle 51 includes a first working position and a second working position. When the first baffle 51 is located at the first working position, the second upper ventilation channel 142 is connected, and when the first baffle 51 is located at the second working position, the second upper ventilation channel 142 is blocked;

[0093] The lower fan 6 includes a second volute and a second fan blade, the second fan blade is arranged in the second volute, and a second volute tongue 65 is slidably arranged on the outer peripheral surface of the second volute, and the second volute tongue 65 is used to block the third air outlet 62 or the fourth air outlet 63. When the second volute tongue 65 blocks the third air outlet 62, the first lower ventilation flow channel 143 is blocked;

[0094] The second switch mechanism 7 includes a second baffle 71, and the second baffle 71 includes a third working position and a fourth working position. When the second baffle 71 is located at the third working position, the second lower ventilation channel 144 is connected. When the second baffle 71 is located at the fourth working position, the second lower ventilation channel 144 is blocked.

[0095] According to the above content, the first switch mechanism 5 includes a first baffle 51 and a first volute tongue 35, and the second switch mechanism 7 includes a second baffle 71 and a second volute tongue 65. By setting the baffle and the movable volute tongue, the air flow path inside the air conditioner can be changed, which is simple and convenient and easy to reduce costs.

[0096] In one embodiment, the upper fan 3 is further provided with a second axial air outlet 34 in the axial direction, and the lower fan 6 is further provided with a fourth axial air outlet 64 in the axial direction;

[0097] A connecting cavity 8 is formed on the isolation plate 4, and the connecting cavity 8 connects the air outlet side of the indoor heat exchanger 2 with the second axial air outlet 34, and connects the air outlet side of the indoor heat exchanger 2 with the fourth axial air outlet 64, so that the airflow on the air outlet side of the indoor heat exchanger 2 at least partially enters the first axial air outlet 31 and the third axial air outlet 61, and at least partially enters the second axial air outlet 34 and the fourth axial air outlet 64 through the connecting cavity 8.

[0098] According to the above content, by setting the connecting cavity 8, the upper fan 3 and the lower fan 6 can both take in air in two directions. At the same time, only one indoor heat exchanger 2 can be set in the shell 1 to meet the heat exchange demand, thereby increasing the air volume and saving space.

[0099] In one embodiment, the connecting cavity 8 includes a first through cavity 81 and a second through cavity 82, the first through cavity 81 is located above the upper fan 3, and the second through cavity 82 is located below the lower fan 6, the first through cavity 81 divides part of the ventilation channel 14 above the upper fan 3 into the first upper ventilation channel 141 and the second upper ventilation channel 142, and the second through cavity 82 divides part of the ventilation channel 14 below the lower fan 6 into the first lower ventilation channel 143 and the second lower ventilation channel 144.

[0100] In one embodiment, one end of the first baffle plate 51 is rotatably connected to the isolation plate 4, and when the first baffle plate 51 is located at the second working position, the other end of the first baffle plate 51 abuts against the cavity wall of the first through cavity 81 to block the second upper ventilation channel 142;

[0101] One end of the second baffle plate 71 is rotatably connected to the isolation plate 4 . When the second baffle plate 71 is located at the fourth working position, the other end of the second baffle plate 71 abuts against the cavity wall of the second through cavity 82 to block the second lower ventilation channel 144 .

[0102] According to the above content, the first through cavity 81 and the second through cavity 82 are provided to help more air flow enter the upper fan 3 and the lower fan 6, thereby increasing the air flow. At the same time, the first through cavity 81 divides the upper part of the ventilation channel 14 into the first upper ventilation channel 141 and the second upper ventilation channel 142, and the second through cavity 82 divides the lower part of the ventilation channel 14 into the first lower ventilation channel 143 and the second lower ventilation channel 144, so that one thing can be used for multiple purposes, saving the number of parts and reducing costs.

[0103] In one embodiment, the isolation plate 4 is provided with a first communication opening 41 and a second communication opening 42;

[0104] The first communication port 41 is disposed at one side of the second upper ventilation channel 142, and the first baffle 51 is disposed at the first communication port 41. When the first baffle 51 is located at the first working position, the second upper ventilation channel 142 is opened and the first communication port 41 is blocked. When the first baffle 51 is located at the second working position, the second upper ventilation channel 142 is blocked and the air inlet channel 13 is connected with the ventilation channel 14.

[0105] The second connecting port 42 is arranged on one side of the second lower ventilation channel 144, and the second baffle 71 is arranged at the second connecting port 42. When the second baffle 71 is located at the third working position, the second lower ventilation channel 144 is opened and the second connecting port 42 is blocked. When the second baffle 71 is located at the fourth working position, the second lower ventilation channel 144 is blocked and the air inlet channel 13 is connected with the ventilation channel 14.

[0106] Through the above content, the first baffle 51 cooperates with the cavity wall of the first cavity 81 to block the second upper ventilation channel 142. Similarly, the second baffle 71 cooperates with the cavity wall of the second cavity 82 to block the second lower ventilation channel 144. Through the position design between the structures, the number of parts is saved, the cost is reduced, and the space occupied by the air conditioner is saved.

[0107] The embodiment of the present application also provides a self-cleaning control method for an air conditioner, wherein the air conditioner is provided with an upper air outlet 11, a lower air outlet 12, and an air duct connected to the upper air outlet 11 and the lower air outlet 12, and an indoor heat exchanger 2, a flow path control mechanism, an upper fan 3, and a lower fan 6 arranged on the air duct, wherein:

[0108] The upper fan 3 is disposed correspondingly to the upper air outlet 11, and the lower fan 6 is disposed correspondingly to the lower air outlet 12;

[0109] The air conditioner is provided with a cooling mode and a heating mode, and the flow path control mechanism is used to control the air duct to form different flow paths under different operation modes of the air conditioner;

[0110] When the air conditioner is in the cooling mode, the flow path control mechanism controls the air duct to form a first flow path connecting the upper air outlet 11 and the lower air outlet 12 inside the air conditioner, and at least one of the upper fan 3 and the lower fan 6 provides power for the airflow to flow from the lower air outlet 12 to the upper air outlet 11 in the first flow path;

[0111] When the air conditioner is in the heating mode, the flow path control mechanism controls the air duct to form a second flow path connecting the upper air outlet 11 and the lower air outlet 12 inside the air conditioner, and at least one of the upper fan 3 and the lower fan 6 provides power for the airflow to flow from the upper air outlet 11 to the lower air outlet 12 in the second flow path;

[0112] The self-cleaning control method comprises:

[0113] S101, in response to a cleaning signal, controlling the flow path control mechanism to operate and turning on one of the upper fan 3 and the lower fan 6, so that a third flow path of a closed cycle is formed in the air duct;

[0114] S102, controlling the operating mode of the air conditioner and the temperature of the indoor heat exchanger 2 according to preset sterilization parameters, so that the airflow flowing in the third flow path cleans the air conditioner after heat exchange with the indoor heat exchanger 2 under multiple operating modes.

[0115] Through the above content, when the air conditioner needs to be cleaned, a cleaning signal is generated, so that the air conditioner controls the upper fan 3, the lower fan 6, the flow path control mechanism and the indoor heat exchanger 2, thereby forming a third flow path inside the air conditioner. After the air flow flows along the third flow path, it drives the dust in the third flow path, which is convenient for centralized collection of dust and cleaning of dust in the third flow path. The self-cleaning of the air conditioner is realized, which helps to reduce the dust inside the air conditioner, avoid the generation of odor, and improve the use experience of the air conditioner.

[0116] In one embodiment, the operation mode of the air conditioner and the temperature of the indoor heat exchanger 2 are controlled according to the preset sterilization parameters so that the airflow flowing in the third flow path cleans the air conditioner after heat exchange with the indoor heat exchanger 2 under the plurality of operation modes, including:

[0117] Controlling the air conditioner to operate in a cooling mode according to the sterilization parameter, and controlling the speed of the fan in the startup state to raise the temperature of the indoor heat exchanger 2 to a third preset temperature, so that condensation water is generated and frost forms in the third flow path;

[0118] The air conditioner is controlled to operate in a heating mode according to the sterilization parameters, and the speed of the fan in the start-up state is controlled to raise the temperature of the indoor heat exchanger 2 to a fourth preset temperature, so that the airflow flowing in the third flow path melts the frosted condensation water after heat exchange with the indoor heat exchanger 2, thereby cleaning the air conditioner, wherein the third preset temperature is greater than the fourth preset temperature.

[0119] Through the above content, condensation water is generated during cooling, causing dust to combine with the condensation water. When the temperature continues to drop and frost forms, the condensation water combines with the dust and peels off the wall of the air duct. During heating, the frost layer melts, causing the dust carried by the defrost water to flow away and detach from the inner wall of the air duct, so that it can be cleaned centrally, achieving internal dust removal of the air conditioner.

[0120] In one embodiment, the air conditioner is controlled to operate in a cooling mode according to the sterilization parameter, and the speed of the fan in the startup state is controlled to increase the temperature of the indoor heat exchanger 2 to a third preset temperature, so that condensation water is generated and frost forms in the third flow path, including:

[0121] Controlling the air conditioner to operate in a cooling mode according to the sterilization parameter, controlling the fan in the startup state to rotate at a first speed, so as to increase the temperature of the indoor heat exchanger 2 to a first preset temperature, wherein the first preset temperature is lower than the dew point temperature of the air, so that the airflow flowing in the third flow path generates condensed water after heat exchange with the indoor heat exchanger 2;

[0122] The fan in the start-up state is controlled to have a second speed so as to raise the temperature of the indoor heat exchanger 2 to a second preset temperature so as to cause condensation water to frost, and when the temperature of the indoor heat exchanger 2 reaches a third preset temperature, the cooling mode is exited, wherein the first preset temperature is greater than the second preset temperature, and the second preset temperature is greater than the third preset temperature.

[0123] Through the above content, refrigeration includes two stages. The first stage generates condensation water to absorb dust inside the air conditioner. The second stage is used for frosting to increase the adsorption force of dust, so that the dust is separated from the inner wall of the air conditioner and is easy to remove.

[0124] In one embodiment, the air conditioner is controlled to operate in a heating mode according to the sterilization parameter, and the speed of the fan in the startup state is controlled to raise the temperature of the indoor heat exchanger 2 to a fourth preset temperature, so that the airflow flowing in the third flow path melts the frosted condensation water after heat exchange with the indoor heat exchanger 2, and the air conditioner is cleaned, including:

[0125] Controlling the air conditioner to operate in a heating mode according to the sterilization parameter, controlling the fan in the start-up state to rotate at a third speed, so as to increase the temperature of the indoor heat exchanger 2 to a defrosting temperature, so as to melt the frost in the third flow path;

[0126] The fan in the start-up state is controlled to have a fourth speed so as to raise the temperature of the indoor heat exchanger 2 to a fourth preset temperature so as to dry the condensed water formed after melting.

[0127] According to the above content, heating includes two stages. The first stage melts the frost, allowing the dust to flow with the melted condensation water, collect the dust, and achieve dust removal. The second stage dries the inside of the air conditioner to ensure the dryness inside the air conditioner and does not affect the next use of the air conditioner.

[0128] In one embodiment, the third flow path includes a first sub-flow path, a second sub-flow path and a third sub-flow path;

[0129] The method comprises:

[0130] The controlling the first switch mechanism 5 and / or the second switch mechanism 7 to operate so that a third flow path is formed between the upper fan 3 and the lower fan 6 based on the intermediate air flow channel 145 includes:

[0131] The first baffle 51 is controlled to be located at the second working position, the second baffle 71 is controlled to be located at the third working position, the first volute tongue 35 blocks the first air outlet 32, the second volute tongue 65 blocks the fourth air outlet 63, and the lower air outlet 12 is closed, and the first sub-flow path is formed between the second air outlet 33, the middle ventilation flow channel 145, the second lower ventilation flow channel 144, the first lower ventilation flow channel 143, the third air outlet 62, one or all of the third axial air outlet 61 and the fourth axial air outlet 64, and one or all of the first axial air outlet 31 and the fourth axial air outlet 64.

[0132] Or, the first baffle 51 is controlled to be located at the first working position, the second baffle 71 is controlled to be located at the fourth working position, the first volute tongue 35 blocks the second air outlet 33, the second volute tongue 65 blocks the third air outlet 62, and the upper air outlet 11 is closed, and the second sub-flow path is formed between the fourth air outlet 63, the middle air flow channel 145, the second upper ventilation flow channel 142, the first upper ventilation flow channel 141, the first air outlet 32, one or all of the first axial air outlet 31 and the fourth axial air outlet 64, and one or all of the third axial air outlet 61 and the fourth axial air outlet 64,

[0133] Or, control the first baffle 51 to be located at the second working position, the second baffle 71 to be located at the fourth working position, the first volute tongue 35 to block the first air outlet 32, and the second volute tongue 65 to block the third air outlet 62, and form the third sub-flow path between the second air outlet 33, the central air flow channel 145, the fourth air outlet 63, one or all of the third axial air outlet 61 and the fourth axial air outlet 64, and one or all of the first axial air outlet 31 and the fourth axial air outlet 64.

[0134] Through the above content, different sub-flow paths can be formed, thereby improving the control flexibility of the air conditioner.

[0135] In one embodiment, the method further comprises:

[0136] In response to the heating signal, the upper fan 3 and the lower fan 6 are controlled to start, the first baffle 51 is located at the second working position, the second baffle 71 is located at the third working position, the first volute tongue 35 blocks the first air outlet 32, the second volute tongue 65 blocks the fourth air outlet 63, and the indoor heat exchanger 2 is used as a condenser, so that the airflow enters the air inlet channel 13 from the upper air outlet 11 and exchanges heat with the indoor heat exchanger 2, and enters the first axial air outlet 31, the second axial air outlet 34, the third axial air outlet 61 and the fourth axial air outlet 64 from the air outlet side of the indoor heat exchanger 2, part of the airflow is blown out from the second air outlet 33, flows along the middle ventilation channel 145 and the second lower ventilation channel 144 to the lower air outlet 12 and then blown out, and part of the airflow is blown out from the third air outlet 62, flows along the first lower ventilation channel 143 to the lower air outlet 12 and then blown out;

[0137] In response to the cooling signal, the upper fan 3 is controlled to start, the lower fan 6 is controlled to start, the first baffle 51 is located at the first working position, the second baffle 71 is located at the fourth working position, the first volute tongue 35 blocks the second air outlet 33, the second volute tongue 65 blocks the third air outlet 62, and the indoor heat exchanger 2 is used as an evaporator, so that the airflow enters the air inlet duct 13 from the lower air outlet 12 and exchanges heat with the indoor heat exchanger 2, and enters the first axial air outlet 31, the second axial air outlet 34, the third axial air outlet 61 and the fourth axial air outlet 64 from the air outlet side of the indoor heat exchanger 2, part of the airflow is blown out from the first air outlet 32, flows along the first upper ventilation duct 141 to the upper air outlet 11 and then blown out, and part of the airflow is blown out from the fourth air outlet 63, flows along the middle ventilation duct 145 and the second upper ventilation duct 142 to the upper air outlet 11 and then blown out.

[0138] For ease of understanding, in one embodiment, Figure 7 As shown, ①, determine whether the air conditioner meets the self-cleaning condition, and if so, enter the self-cleaning function. Preferably, when the air conditioner has been running for a long time or has accumulated a maximum cooling time (a preset time), the self-cleaning condition is met, and the self-cleaning function is executed after the air conditioner is shut down.

[0139] ②, when the self-cleaning function starts to be executed, the moving parts are controlled to realize the airflow circulation inside the air duct. Among them, the moving parts include the first baffle 51, the second baffle 71, the first volute tongue 35 and the second volute tongue 65. The specific action process includes: the first baffle 51 is located in the second working position, the second baffle 71 is located in the third working position, the first volute tongue 35 blocks the second air outlet 33, the second volute tongue 65 blocks the third air outlet 62, the lower fan 6 is turned off, and the upper fan 3 is turned on, forming an internal airflow circulation (such as Figure 4 ).

[0140] ③. When the air conditioner is in cooling operation, the lower fan 6 is turned off, and the upper fan 3 is operated at a set speed to the set wind speed. The fan speed is controlled to make the temperature of the indoor heat exchanger 2 reach the first preset temperature, so that the temperature inside the air duct is lower than the dew point temperature of the air, condensation water is generated inside the air duct, and the dust is mixed with the condensation water.

[0141] ④. Continue to control the speed of the upper fan 3 to make the temperature of the indoor heat exchanger 2 drop to the second preset temperature, and the inner wall of the air duct begins to frost. When the temperature of the indoor heat exchanger 2 reaches the third preset temperature, the upper fan 3 is shut down and the cooling mode is exited.

[0142] ⑤. Switch the air conditioner to heating mode, turn on the upper fan 3 and run it at the lowest speed to quickly increase the temperature inside the air duct, accelerate the melting of the frost layer inside the air duct, and quickly peel off the dust and frost layer from the surface of the air duct and the fan.

[0143] ⑥. Control the rotation speed of the upper fan 3 to keep the temperature of the indoor heat exchanger 2 at the fourth preset temperature. The upper fan 3 drives the high-temperature air flow downward to perform high-temperature self-cleaning and sterilization on the lower air outlet channel and the lower fan 6.

[0144] ⑦. After the lower air duct is self-cleaned, the lower fan 6 is turned on and the upper fan 3 is turned off. At the same time, the first baffle 51 is located at the first working position, the second baffle 71 is located at the fourth working position, the first volute tongue 35 blocks the first air outlet 32, the second volute tongue 65 blocks the fourth air outlet 63, and the upper air outlet 11 is closed at the same time. The airflow is circulated in the upper air duct part, and the upper air duct is self-cleaned at high temperature, thereby achieving high-temperature self-cleaning of the entire air duct component (such as Figure 2 ).

[0145] ⑧After completion, the air conditioner shuts down, exits the self-cleaning function, and enters standby mode.

[0146] The first preset temperature is above 0°C, the second preset temperature and the third preset temperature are both below 0°C, and the second preset temperature is greater than the third preset temperature. The fourth preset temperature is a high temperature stage temperature control, and the temperature is controlled at above 50°C.

[0147] In another embodiment, in order to reduce the control of components in the air conditioner, such as Figure 8 As shown, ①, when the air conditioner has been running for a long time or has accumulated a maximum cooling time, the conditions for entering self-cleaning are met, and the self-cleaning function is performed after shutdown.

[0148] ②, when the self-cleaning function starts to be executed, the moving parts are controlled to realize the airflow circulation inside the air duct. Among them, the moving parts include the first baffle 51, the second baffle 71, the first volute tongue 35 and the second volute tongue 65. The specific action process includes: the first baffle 51 is located at the second working position, the second baffle 71 is located at the fourth working position, the first volute tongue 35 blocks the first air outlet 32, the second volute tongue 65 blocks the third air outlet 62, the lower fan 6 is turned off, and the upper fan 3 is turned on. At this time, the airflow circulation inside the air duct is formed (such as Figure 5 as shown).

[0149] ③. When the air conditioner is in cooling operation, the lower fan 6 is turned off, and the upper fan 3 is operated at a set speed to the set wind speed. The fan speed is controlled to make the temperature of the indoor heat exchanger 2 reach the first preset temperature, so that the temperature inside the air duct is lower than the dew point temperature of the air, condensation water is generated inside the air duct, and the dust is mixed with the condensation water.

[0150] ④. Continue to control the speed of the upper fan 3 to make the temperature of the indoor heat exchanger 2 drop to the second preset temperature, and the inner wall of the air duct begins to frost. When the temperature of the indoor heat exchanger 2 reaches the third preset temperature, the upper fan 3 is shut down and the cooling mode is exited.

[0151] ⑤. Switch the air conditioner to heating mode, turn on the upper fan 3 and run it to the lowest wind speed, quickly increase the temperature inside the air duct, accelerate the melting of the frost layer inside the air duct, and quickly peel off the dust and frost layer from the surface of the air duct and the fan.

[0152] ⑥. Control the rotation speed of the upper fan 3 to keep the temperature of the indoor heat exchanger 2 at the fourth preset temperature. The upper fan 3 drives the high-temperature air flow downward to perform high-temperature self-cleaning and sterilization on the lower air outlet and the lower fan.

[0153] ⑦. After the high-temperature self-cleaning of the lower fan 6 is completed, the lower fan 6 is turned on and the upper fan 3 is turned off to achieve the high-temperature self-cleaning of the upper fan 3, thereby achieving the high-temperature self-cleaning of the entire air duct component.

[0154] ⑧After completion, the air conditioner shuts down, exits the self-cleaning function, and enters standby mode.

[0155] The first preset temperature is above 0°C, the second preset temperature and the third preset temperature are both below 0°C, and the second preset temperature is greater than the third preset temperature. The fourth preset temperature is a high temperature stage temperature control, and the temperature is controlled at above 50°C.

[0156] It should be noted that when the air conditioner is self-cleaned, the lower fan 6 can be started first, and the upper fan 3 is not started, so as to form the following Figure 2 The third flow path shown in the figure cleans the upper air port 11. Then, the lower air blower 6 is turned off and the upper air blower 3 is turned on to form a Figure 4The third flow path shown is used to clean the lower air outlet 12. In addition, in some embodiments, the upper fan 3 and the lower fan 6 can be started and shut down alternately, for example, the upper fan 3 is turned on for a first preset time, and the lower fan 6 is turned off at the same time, and then the lower fan 6 is turned on for a second preset time, and the upper fan 3 is turned off at the same time, and so on.

[0157] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0158] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0159] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0160] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0161] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0162] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc., which can store program code.

[0163] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An air conditioner, characterized in that: The air conditioner is provided with an upper air port (11), a lower air port (12), and an air duct connected to the upper air port (11) and the lower air port (12), and an indoor heat exchanger (2), a flow path control mechanism, an upper fan (3), and a lower fan (6) arranged on the air duct, wherein: The upper fan (3) is arranged corresponding to the upper air outlet (11), and the lower fan (6) is arranged corresponding to the lower air outlet (12); The air conditioner is provided with a cooling mode and a heating mode, and the flow path control mechanism is used to control the air duct to form different flow paths under different operation modes of the air conditioner; When the air conditioner is in the cooling mode, the flow path control mechanism controls the air duct to form a first flow path inside the air conditioner that connects the upper air port (11) and the lower air port (12), and at least one of the upper fan (3) and the lower fan (6) provides power for the airflow to flow from the lower air port (12) to the upper air port (11) in the first flow path; When the air conditioner is in the heating mode, the flow path control mechanism controls the air duct to form a second flow path inside the air conditioner that connects the upper air port (11) and the lower air port (12), and at least one of the upper fan (3) and the lower fan (6) provides power for the airflow to flow from the upper air port (11) to the lower air port (12) in the second flow path; The air conditioner further comprises a controller configured to: In response to a cleaning signal, the flow path control mechanism is controlled to operate and one of the upper fan (3) and the lower fan (6) is turned on, so that a third flow path of a closed circulation is formed in the air duct; Controlling the operating mode of the air conditioner and the temperature of the indoor heat exchanger (2) according to preset sterilization parameters, so that the airflow flowing in the third flow path cleans the air conditioner after exchanging heat with the indoor heat exchanger (2) under the plurality of operating modes; The air conditioner further comprises a housing (1); the indoor heat exchanger (2) comprises an air inlet side and an air outlet side; the upper fan (3) comprises a first axial air port (31), a first air port (32) and a second air port (33); the first axial air port (31) is arranged in the axial direction of the upper fan (3); the first air port (32) and the second air port (33) are arranged in the radial direction of the upper fan (3); the first axial air port (31) is connected to the air outlet side of the indoor heat exchanger (2) and is used for introducing the airflow on the air outlet side of the indoor heat exchanger (2) into the first axial air port (31) and discharging it from the first air port (32) and / or the second air port (33) after the upper fan (3) is started; The lower fan (6) comprises a third axial air port (61), a third air port (62) and a fourth air port (63); the third axial air port (61) is arranged in the axial direction of the lower fan (6), and the third air port (62) and the fourth air port (63) are arranged in the radial direction of the lower fan (6); the third axial air port (61) is connected to the air outlet side of the indoor heat exchanger (2), and is used for introducing the airflow on the air outlet side of the indoor heat exchanger (2) into the third axial air port (61) after the upper fan (3) is started, and the airflow is discharged from the third air port (62) and / or the fourth air port (63); an isolation plate (4) located in the housing (1), the isolation plate (4) connecting the first air port (32), the second air port (33), the third air port (62), the fourth air port (63), the upper air port (11) and the lower air port (12) to form a ventilation flow channel (14), so that the airflow discharged by the upper fan (3) and / or the lower fan (6) flows out from the upper air port (11) or the lower air port (12) along the ventilation flow channel (14); The ventilation flow channel (14) comprises a first upper ventilation flow channel (141) connecting the first air outlet (32) and the upper air outlet (11), a second upper ventilation flow channel (142) connecting the second air outlet (33) and the upper air outlet (11), a first lower ventilation flow channel (143) connecting the third air outlet (62) and the lower air outlet (12), a second lower ventilation flow channel (144) connecting the fourth air outlet (63) and the lower air outlet (12), and a middle ventilation flow channel (145) connecting the second air outlet (33) and the fourth air outlet (63); The flow path control mechanism comprises a first switch mechanism (5), which is located in the housing (1) and is used to control the first upper ventilation flow channel (141) and / or the second upper ventilation flow channel (142) to be turned on or off; The flow path control mechanism comprises a second switch mechanism (7) located in the housing (1) and used to control the opening or closing of the first lower ventilation flow channel (143) and / or the second lower ventilation flow channel (144).

2. The air conditioner according to claim 1, characterized in that: The upper part of the housing (1) is provided with the upper air port (11), and the upper air port (11) can be controlled to be opened or closed; the lower part of the housing (1) is provided with the lower air port (12), and the lower air port (12) can be controlled to be opened or closed; The indoor heat exchanger (2) is located in the housing (1) and serves as an evaporator during cooling and as a condenser during heating; the upper air vent (11) and the lower air vent (12) are both connected to the air inlet side of the indoor heat exchanger (2) to form an air inlet flow channel (13); The upper fan (3) and the lower fan (6) are both arranged on the air outlet side of the indoor heat exchanger (2).

3. The air conditioner according to claim 2, characterized in that: The upper fan (3) comprises a first volute and a first fan blade, the first fan blade is arranged in the first volute, a first volute tongue (35) is slidably arranged on the outer peripheral surface of the first volute, the first volute tongue (35) is used to block the first air outlet (32) or the second air outlet (33), and when the first volute tongue (35) blocks the first air outlet (32), the first upper ventilation flow channel (141) is blocked; The first switch mechanism (5) comprises a first baffle (51), the first baffle (51) comprising a first working position and a second working position, when the first baffle (51) is located at the first working position, the second upper ventilation flow channel (142) is connected, and when the first baffle (51) is located at the second working position, the second upper ventilation flow channel (142) is blocked; The lower fan (6) comprises a second volute and a second fan blade, the second fan blade is arranged in the second volute, a second volute tongue (65) is slidably arranged on the outer peripheral surface of the second volute, the second volute tongue (65) is used to block the third air outlet (62) or the fourth air outlet (63), and when the second volute tongue (65) blocks the third air outlet (62), the first lower ventilation flow channel (143) is blocked; The second switch mechanism (7) comprises a second baffle (71), the second baffle (71) comprising a third working position and a fourth working position, when the second baffle (71) is located at the third working position, the second lower ventilation flow channel (144) is connected, and when the second baffle (71) is located at the fourth working position, the second lower ventilation flow channel (144) is blocked.

4. The air conditioner according to claim 3, characterized in that: The upper fan (3) is also provided with a second axial air outlet (34) in the axial direction, and the lower fan (6) is also provided with a fourth axial air outlet (64) in the axial direction; A connecting cavity (8) is formed on the isolation plate (4), and the connecting cavity (8) connects the air outlet side of the indoor heat exchanger (2) with the second axial air port (34), and connects the air outlet side of the indoor heat exchanger (2) with the fourth axial air port (64), so that the airflow on the air outlet side of the indoor heat exchanger (2) at least partially enters the first axial air port (31) and the third axial air port (61), and at least partially enters the second axial air port (34) and the fourth axial air port (64) through the connecting cavity (8).

5. The air conditioner according to claim 4, characterized in that: The connecting cavity (8) comprises a first through cavity (81) and a second through cavity (82), wherein the first through cavity (81) is located above the upper fan (3), and the second through cavity (82) is located below the lower fan (6), wherein the first through cavity (81) divides a portion of the ventilation flow passage (14) above the upper fan (3) into the first upper ventilation flow passage (141) and the second upper ventilation flow passage (142), and the second through cavity (82) divides a portion of the ventilation flow passage (14) below the lower fan (6) into the first lower ventilation flow passage (143) and the second lower ventilation flow passage (144).

6. The air conditioner according to claim 5, characterized in that: One end of the first baffle (51) is rotatably connected to the isolation plate (4); when the first baffle (51) is located at the second working position, the other end of the first baffle (51) abuts against the cavity wall of the first through cavity (81) to block the second upper ventilation channel (142); One end of the second baffle plate (71) is rotatably connected to the isolation plate (4); when the second baffle plate (71) is located at the fourth working position, the other end of the second baffle plate (71) abuts against the cavity wall of the second through cavity (82) to block the second lower ventilation channel (144).

7. The air conditioner according to claim 3, characterized in that: The isolation plate (4) is provided with a first communication opening (41) and a second communication opening (42); The first communication port (41) is arranged at one side of the second upper ventilation channel (142), and the first baffle (51) is arranged at the first communication port (41); when the first baffle (51) is located at the first working position, the second upper ventilation channel (142) is opened and the first communication port (41) is blocked; when the first baffle (51) is located at the second working position, the second upper ventilation channel (142) is blocked and the air inlet channel (13) is connected with the ventilation channel (14); The second connecting port (42) is arranged on one side of the second lower ventilation channel (144), and the second baffle (71) is arranged at the second connecting port (42); when the second baffle (71) is located at the third working position, the second lower ventilation channel (144) is opened and the second connecting port (42) is blocked; when the second baffle (71) is located at the fourth working position, the second lower ventilation channel (144) is blocked and the air inlet channel (13) is connected with the ventilation channel (14).

8. A self-cleaning control method for an air conditioner, characterized in that: The air conditioner is provided with an upper air port (11), a lower air port (12), and an air duct connected to the upper air port (11) and the lower air port (12), and an indoor heat exchanger (2), a flow path control mechanism, an upper fan (3), and a lower fan (6) arranged on the air duct, wherein: The upper fan (3) is arranged corresponding to the upper air outlet (11), and the lower fan (6) is arranged corresponding to the lower air outlet (12); The air conditioner is provided with a cooling mode and a heating mode, and the flow path control mechanism is used to control the air duct to form different flow paths under different operation modes of the air conditioner; When the air conditioner is in the cooling mode, the flow path control mechanism controls the air duct to form a first flow path inside the air conditioner that connects the upper air port (11) and the lower air port (12), and at least one of the upper fan (3) and the lower fan (6) provides power for the airflow to flow from the lower air port (12) to the upper air port (11) in the first flow path; When the air conditioner is in the heating mode, the flow path control mechanism controls the air duct to form a second flow path inside the air conditioner that connects the upper air port (11) and the lower air port (12), and at least one of the upper fan (3) and the lower fan (6) provides power for the airflow to flow from the upper air port (11) to the lower air port (12) in the second flow path; The air conditioner further comprises a housing (1); the indoor heat exchanger (2) comprises an air inlet side and an air outlet side; the upper fan (3) comprises a first axial air port (31), a first air port (32) and a second air port (33); the first axial air port (31) is arranged in the axial direction of the upper fan (3); the first air port (32) and the second air port (33) are arranged in the radial direction of the upper fan (3); the first axial air port (31) is connected to the air outlet side of the indoor heat exchanger (2) and is used for introducing the airflow on the air outlet side of the indoor heat exchanger (2) into the first axial air port (31) and discharging it from the first air port (32) and / or the second air port (33) after the upper fan (3) is started. The lower fan (6) comprises a third axial air port (61), a third air port (62) and a fourth air port (63); the third axial air port (61) is arranged in the axial direction of the lower fan (6), and the third air port (62) and the fourth air port (63) are arranged in the radial direction of the lower fan (6); the third axial air port (61) is connected to the air outlet side of the indoor heat exchanger (2), and is used for introducing the airflow on the air outlet side of the indoor heat exchanger (2) into the third axial air port (61) after the upper fan (3) is started, and the airflow is discharged from the third air port (62) and / or the fourth air port (63); an isolation plate (4) located in the housing (1), the isolation plate (4) connecting the first air port (32), the second air port (33), the third air port (62), the fourth air port (63), the upper air port (11) and the lower air port (12) to form a ventilation flow channel (14), so that the airflow discharged by the upper fan (3) and / or the lower fan (6) flows out from the upper air port (11) or the lower air port (12) along the ventilation flow channel (14); The ventilation flow channel (14) comprises a first upper ventilation flow channel (141) connecting the first air outlet (32) and the upper air outlet (11), a second upper ventilation flow channel (142) connecting the second air outlet (33) and the upper air outlet (11), a first lower ventilation flow channel (143) connecting the third air outlet (62) and the lower air outlet (12), a second lower ventilation flow channel (144) connecting the fourth air outlet (63) and the lower air outlet (12), and a middle ventilation flow channel (145) connecting the second air outlet (33) and the fourth air outlet (63); The flow path control mechanism comprises a first switch mechanism (5), which is located in the housing (1) and is used to control the first upper ventilation flow channel (141) and / or the second upper ventilation flow channel (142) to be turned on or off; The flow path control mechanism comprises a second switch mechanism (7), which is located in the housing (1) and is used to control the first lower ventilation flow channel (143) and / or the second lower ventilation flow channel (144) to be turned on or off; The self-cleaning control method comprises: In response to a cleaning signal, the flow path control mechanism is controlled to operate and one of the upper fan (3) and the lower fan (6) is turned on, so that a third flow path of a closed circulation is formed in the air duct; The operating mode of the air conditioner and the temperature of the indoor heat exchanger (2) are controlled according to preset sterilization parameters, so that the airflow flowing in the third flow path cleans the air conditioner after heat exchange with the indoor heat exchanger (2) under multiple operating modes.

9. The control method according to claim 8, characterized in that: The method of controlling the operating mode of the air conditioner and the temperature of the indoor heat exchanger (2) according to the preset sterilization parameters so that the airflow flowing in the third flow path exchanges heat with the indoor heat exchanger (2) under the plurality of operating modes to clean the air conditioner comprises: Controlling the air conditioner to operate in a cooling mode according to the sterilization parameters, and controlling the speed of the fan in the startup state to raise the temperature of the indoor heat exchanger (2) to a third preset temperature, so that condensation water is generated and frost forms in the third flow path; The air conditioner is controlled to operate in a heating mode according to the sterilization parameters, and the speed of the blower in the start-up state is controlled to raise the temperature of the indoor heat exchanger (2) to a fourth preset temperature, so that the airflow flowing in the third flow path melts the frosted condensation water after heat exchange with the indoor heat exchanger (2), thereby cleaning the air conditioner, wherein the third preset temperature is greater than the fourth preset temperature.

10. The control method according to claim 9, characterized in that: The step of controlling the air conditioner to operate in a cooling mode according to the sterilization parameter and controlling the speed of the fan in the startup state to raise the temperature of the indoor heat exchanger (2) to a third preset temperature so that condensation water is generated and frost forms in the third flow path comprises: Controlling the air conditioner to operate in a cooling mode according to the sterilization parameter, controlling the fan in the startup state to rotate at a first speed, so as to raise the temperature of the indoor heat exchanger (2) to a first preset temperature, wherein the first preset temperature is lower than the dew point temperature of the air, so that condensation water is generated after the airflow flowing in the third flow path exchanges heat with the indoor heat exchanger (2); The fan in the start-up state is controlled to a second speed to raise the temperature of the indoor heat exchanger (2) to a second preset temperature so that condensation water forms frost, and when the temperature of the indoor heat exchanger (2) reaches a third preset temperature, the cooling mode is exited, wherein the first preset temperature is greater than the second preset temperature, and the second preset temperature is greater than the third preset temperature.

11. The control method according to claim 9 or 10, characterized in that: The air conditioner is controlled to operate in a heating mode according to the sterilization parameter, and the speed of the fan in the start-up state is controlled to raise the temperature of the indoor heat exchanger (2) to a fourth preset temperature, so that the airflow flowing in the third flow path exchanges heat with the indoor heat exchanger (2) to melt the frosted condensed water, thereby cleaning the air conditioner, comprising: Controlling the air conditioner to operate in a heating mode according to the sterilization parameter, controlling the fan in the start-up state to rotate at a third speed, so as to increase the temperature of the indoor heat exchanger (2) to a defrosting temperature, so as to melt the frost in the third flow path; The fan in the start-up state is controlled to have a fourth speed so as to raise the temperature of the indoor heat exchanger (2) to a fourth preset temperature so as to dry the condensed water formed after melting.

12. The control method according to claim 8, characterized in that: Applied to the air conditioner according to any one of claims 3 to 7 above, the third flow path includes a first sub-flow path, a second sub-flow path and a third sub-flow path; The method comprises: The control of the flow path control mechanism and the opening of one of the upper fan (3) and the lower fan (6) so as to form a closed circulation third flow path in the air duct comprises: The first baffle (51) is controlled to be located at the second working position, the second baffle (71) is controlled to be located at the third working position, the first volute tongue (35) blocks the first air port (32), the second volute tongue (65) blocks the fourth air port (63), and the lower air port (12) is closed, so that the first sub-flow path is formed between the second air port (33), the middle air flow channel (145), the second lower air flow channel (144), the first lower air flow channel (143), the third air port (62), one or all of the third axial air port (61) and the fourth axial air port (64), and one or all of the first axial air port (31) and the fourth axial air port (64), Alternatively, the first baffle (51) is controlled to be located at the first working position, the second baffle (71) is controlled to be located at the fourth working position, the first volute tongue (35) blocks the second air outlet (33), the second volute tongue (65) blocks the third air outlet (62), and the upper air outlet (11) is closed, so that the second sub-flow path is formed between the fourth air outlet (63), the middle air flow channel (145), the second upper air flow channel (142), the first upper air flow channel (141), the first air outlet (32), one or all of the first axial air outlet (31) and the fourth axial air outlet (64), and one or all of the third axial air outlet (61) and the fourth axial air outlet (64), Alternatively, the first baffle (51) is controlled to be located at the second working position, the second baffle (71) is controlled to be located at the fourth working position, the first volute tongue (35) blocks the first air outlet (32), and the second volute tongue (65) blocks the third air outlet (62), so that the third sub-flow path is formed between the second air outlet (33), the central air flow channel (145), the fourth air outlet (63), one or all of the third axial air outlet (61) and the fourth axial air outlet (64), and one or all of the first axial air outlet (31) and the fourth axial air outlet (64).

13. The control method according to claim 12, characterized in that: The method further comprises: In response to a heating signal, the upper fan (3) is controlled to start, the lower fan (6) is controlled to start, the first baffle (51) is located at the second working position, the second baffle (71) is located at the third working position, the first volute tongue (35) blocks the first air outlet (32), the second volute tongue (65) blocks the fourth air outlet (63), and the indoor heat exchanger (2) is used as a condenser, so that the airflow enters the air inlet channel (13) from the upper air outlet (11) and exchanges heat with the indoor heat exchanger (2), thereby removing heat from the indoor The air outlet side of the heat exchanger (2) enters the first axial air port (31), the second axial air port (34), the third axial air port (61) and the fourth axial air port (64); part of the air flow is blown out from the second air port (33), flows along the middle air flow channel (145) and the second lower air flow channel (144) to the lower air port (12) and then blown out; part of the air flow is blown out from the third air port (62), flows along the first lower air flow channel (143) to the lower air port (12) and then blown out; In response to a cooling signal, the upper fan (3) is controlled to start, the lower fan (6) is controlled to start, the first baffle (51) is located at the first working position, the second baffle (71) is located at the fourth working position, the first volute tongue (35) blocks the second air outlet (33), the second volute tongue (65) blocks the third air outlet (62), and the indoor heat exchanger (2) is used as an evaporator, so that the airflow enters the air inlet channel (13) from the lower air outlet (12) and exchanges heat with the indoor heat exchanger (2), thereby removing heat from the indoor The air outlet side of the heat exchanger (2) enters the first axial air port (31), the second axial air port (34), the third axial air port (61) and the fourth axial air port (64); part of the air flow is blown out from the first air port (32), flows along the first upper ventilation channel (141) to the upper air port (11) and then blown out; part of the air flow is blown out from the fourth air port (63), flows along the middle ventilation channel (145) and the second upper ventilation channel (142) to the upper air port (11) and then blown out.

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