A window-type air conditioner and a control method thereof

Abstract

The application provides a window type air conditioner and a control method. The window type air conditioner comprises a shell, an evaporator and a cross-flow fan. The shell is formed with an indoor cavity and an outdoor cavity. The indoor cavity is formed with an air duct. The evaporator and the cross-flow fan are arranged in the air duct. A flow channel is connected with the air duct and the outdoor cavity. Under the action of the cross-flow fan, indoor air entering the air duct and completing heat exchange with the evaporator is mixed with outdoor air entering the air duct through the outdoor cavity and the flow channel. Condensed water drops are generated. The condensed water drops are collected on the cross-flow fan blade and clean the cross-flow fan blade. The structure and cleaning process are simple, the cleaning effect is good, the centrifugal force and the self-gravity of the condensed water drops are fully utilized to clean the cross-flow fan blade, the cleaning is complete, the cleaning of the cross-flow fan blade is maximally guaranteed, the quality of air blown out by the window type air conditioner is guaranteed, the problem that dust is accumulated on the cross-flow fan blade to cause peculiar smell and bacteria breeding is avoided, and the problems that the existing cleaning device cannot be used to clean the cross-flow fan blade, the cleaning process is complicated and the cleaning efficiency is low are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, in particular to a window type air conditioner and a control method. BACKGROUND

[0002] The window type air conditioner is widely used in many fields due to its simple structure, low production cost, low price, convenient installation and reliable operation. After being used for a long time, a lot of dust will accumulate on the cross-flow fan blade. When the window type air conditioner is running, the dust will be discharged to the environment with the outlet air of the window type air conditioner, which reduces the quality of the air in the environment and makes the user experience worse. In the prior art, there are cleaning devices that can clean the heat exchanger, but these cleaning devices have a narrow cleaning range and cannot clean the cross-flow fan blade, resulting in incomplete and insufficient cleaning. If an additional device for cleaning the cross-flow fan blade is added, the structure of the cleaning device will be complicated and the space occupied will be increased, and the cleaning process will be complicated and the cleaning efficiency will be reduced. SUMMARY

[0003] In view of this, the present application provides a window type air conditioner and a control method to solve the problems of the prior art that the cleaning device cannot be used to clean the cross-flow fan blade, the cleaning is not complete, the cleaning process is complicated and the cleaning efficiency is low.

[0004] The present application provides a window type air conditioner, comprising a shell, an evaporator and a cross-flow fan, the shell is formed with an indoor cavity and an outdoor cavity located indoors and outdoors respectively; the indoor cavity is formed with an air duct, the air duct is provided with an evaporator and a cross-flow fan, the cross-flow fan comprises a cross-flow fan blade; the window type air conditioner further comprises a flow channel communicating the air duct and the outdoor cavity;

[0005] Under the action of the cross-flow fan, indoor air enters the air duct and completes heat exchange with the evaporator, outdoor air enters the air duct through the outdoor cavity and the flow channel, indoor air and outdoor air are mixed to produce condensate drops, and the condensate drops collect and clean the cross-flow fan blade when flowing through the cross-flow fan blade.

[0006] Further optionally, the window type air conditioner has a refrigeration mode; when the cross-flow fan blade needs to be cleaned, the window type air conditioner is in the refrigeration mode, under the action of the cross-flow fan, indoor hot air entering the air duct flows through the evaporator and is converted into indoor cold air, outdoor hot air enters the air duct through the flow channel, indoor cold air and outdoor hot air produce condensate drops, the condensate drops adhere to the cross-flow fan blade and collect into condensate water, and the condensate water cleans the cross-flow fan blade under the action of centrifugal force and its own gravity.

[0007] Further optionally, the window type air conditioner further comprises an axial flow fan arranged in the outdoor cavity, the air inlet end of the flow channel is coaxially arranged with the axial flow fan, and the air outlet end of the flow channel is close to the cross-flow fan blade.

[0008] Further, the flow channel extends along the axial direction of the axial flow fan; under the action of the axial flow fan, outdoor air enters the outdoor cavity, and under the action of the cross flow fan, the outdoor air enters the air duct through the flow channel.

[0009] Further, the air inlet end of the flow channel is provided with a baffle, and the baffle can be controlled to rotate to open or close the flow channel.

[0010] When the cross flow fan blade needs to be cleaned, the baffle is controlled to move to open the flow channel; when the cross flow fan blade does not need to be cleaned, the baffle is controlled to move to close the flow channel.

[0011] Further, the air outlet end of the air duct and the top of the shell are formed with an indoor air outlet, and the indoor air outlet is provided with a guide vane, and the guide vane can be controlled to rotate.

[0012] When the condensate water cleans the cross flow fan blade, the guide vane is controlled to rotate to discharge the air in the air duct.

[0013] Further, a water collecting tray is arranged in the indoor cavity and below the evaporator, and the water collecting tray can collect the condensate water of the evaporator; and an ultrasonic device is arranged in the water collecting tray.

[0014] Under the action of the ultrasonic device, the condensate water in the water collecting tray can be converted into cold mist.

[0015] The application also provides a control method of the window type air conditioner.

[0016] When the cross flow fan blade needs to be cleaned, the window type air conditioner is controlled to be in a cooling mode.

[0017] The flow channel is controlled to be opened, so that the outdoor hot air and the indoor cold air in the air duct are mixed to generate condensate water drops and clean the cross flow fan blade.

[0018] Further, the control of the flow channel to be opened, so that the outdoor hot air and the indoor cold air in the air duct are mixed to generate condensate water drops and clean the cross flow fan blade comprises:

[0019] The window type air conditioner is controlled to start timing and the guide vane is controlled to rotate to discharge the air in the air duct.

[0020] When the timing length reaches a first preset length, the ultrasonic device is controlled to be started, so that the condensate water in the water collecting tray is converted into cold mist and mixed with the outdoor hot air and the indoor cold air in the air duct to generate condensate water drops and clean the cross flow fan blade.

[0021] Further optionally, the window air conditioner further comprises a high wind barrier mode; and the control of the flow channel opening, after the outdoor hot air mixes with the indoor cold air in the air duct to produce condensate water droplets and clean the through-flow fan blade, comprises:

[0022] When the timing duration reaches the second preset duration, the flow channel is controlled to be closed and the ultrasonic device is controlled to stop running;

[0023] The window air conditioner is controlled to be in the high wind barrier mode;

[0024] When the timing duration reaches the third preset duration, the window air conditioner is controlled to stop running or be in other modes.

[0025] The present application provides a window air conditioner, comprising a shell, an evaporator and a through-flow fan, the shell is formed with an indoor cavity and an outdoor cavity; the indoor cavity is formed with an air duct, the air duct is provided with the evaporator and the through-flow fan, and the flow channel is connected with the air duct and the outdoor cavity; under the action of the through-flow fan, the indoor air entering the air duct and completing heat exchange with the evaporator mixes with the outdoor air entering the air duct through the outdoor cavity and the flow channel, to produce condensate water droplets, which are collected on the through-flow fan blade and clean the through-flow fan blade; the structure and the cleaning process are simple, the cleaning effect is good, the through-flow fan blade is cleaned by fully utilizing the centrifugal force and the self-gravity of the condensate water droplets, the cleaning is thorough, the cleaning of the through-flow fan blade is maximized, the quality of the air blown out by the window air conditioner is ensured, the problem of odor and bacteria breeding caused by dust accumulation on the through-flow fan blade is avoided, the problems that the existing cleaning device cannot be used to clean the through-flow fan blade, the cleaning process is complicated and the cleaning efficiency is low are solved; in addition, the outdoor air is introduced when the through-flow fan blade is cleaned, to achieve the function of fresh air exchange, and ensure the air circulation between indoor and outdoor; the window air conditioner further comprises an axial-flow fan, the inlet end of the flow channel is coaxial with the axial-flow fan, and the outlet end of the flow channel is close to the through-flow fan blade, so that the outdoor air enters the air duct quickly and smoothly, to produce sufficient condensate water droplets and improve the cleaning efficiency; the shell is formed with an indoor air outlet at the top of the indoor side, and the indoor air outlet is provided with a guide vane, which is controlled to rotate to be discharged upward in the air duct when the condensate water cleans the through-flow fan blade, to avoid the condensate water being thrown to the indoor side, to cause safety hazards and reduce user experience. BRIEF DESCRIPTION OF DRAWINGS

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

[0027] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the conditions that can be implemented by the application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the application, should still fall within the scope of the technical content disclosed by the application.

[0028] Figure 1 The external structure schematic diagram of the embodiment of the window type air conditioner provided by the application is shown in the specification.

[0029] Figure 2a And Figure 2b The internal structure schematic diagram of the embodiment of the window type air conditioner provided by the application is shown in the specification.

[0030] Figure 3a The enlarged view of A in Figure 2b

[0031] Figure 3b The enlarged view of B in Figure 2b

[0032] Figure 4a And Figure 4b The partial cross-sectional structure schematic diagram of the embodiment of the window type air conditioner provided by the application is shown in the specification.

[0033] Figure 5 The flow chart of the control method embodiment of the window type air conditioner provided by the application is shown in the specification.

[0034] In the figure:

[0035] 1-Shell; 11-Indoor cavity; 111-Indoor air inlet; 112-Indoor air outlet; 12- Outdoor cavity;

[0036] 21-Evaporator; 22-Through-flow fan; 23-Volute; 24-Drain pan; 25-Ultrasonic device; 26-Deflector; 27-Axial flow fan; 28-Condenser;

[0037] 31-Flow channel; 32-Baffle. DETAILED DESCRIPTION

[0038] The embodiments of the application are described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the application from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the application.

[0039] ​​The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "and / or", "at least one of", "one or more of", and "and / or at least one of" as used herein in the disclosure are open- ended, that is, are intended to mean one or more of the recited items can be employed jointly or severally. More specifically, in the foregoing instances, for at least one of A and B occurs if, for example: (a) A occurs and B occurs, (b) A occurs and B does not occur, (c) A does not occur and B occurs, or (d) even if both A and B do not occur. The terms "comprises", "comprising", "includes", "including" and "contains", "containing" as used herein, are used in their broadest sense and equivalently to the term "comprising", and permit the presence of zero or more steps, elements, members, components, and / or units, whether disclosed or not disclosed in this specification.

[0040] It should be understood that the term "and / or" as used herein merely describes an association between associated objects in a manner that can encompass the three cases of "alone", "and" and "or" of the objects. In addition, the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0041] It should also be noted that the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the goods or systems comprising a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such goods or systems. Without more limitation, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the goods or systems comprising the element.

[0042] After the window air conditioner is used for a long time, a lot of dust will accumulate on the cross-flow fan blade, and the dust will be discharged to the environment with the outlet air of the window air conditioner, reducing the air quality in the environment. The cross-flow fan blade is surrounded by the evaporator and the volute, and it is difficult to clean. However, the existing cleaning device for cleaning the heat exchanger cannot clean the cross-flow fan blade, resulting in incomplete and insufficient cleaning. Adding a device for cleaning the cross-flow fan blade makes the structure of the cleaning device complex and increases the occupied space, and the cleaning process is complicated, and the cleaning efficiency is reduced.

[0043] The application creatively provides a window air conditioner, which comprises a shell, an evaporator and a cross-flow fan, the shell is formed with an indoor cavity and an outdoor cavity; the indoor cavity is formed with an air duct, the evaporator and the cross-flow fan are arranged in the air duct, and a flow channel is arranged to communicate the air duct and the outdoor cavity; under the action of the cross-flow fan, indoor air entering the air duct and completing heat exchange with the evaporator is mixed with outdoor air entering the air duct through the outdoor cavity and the flow channel, to generate condensate water drops, the condensate water drops are collected on the cross-flow fan blade and clean the cross-flow fan blade; the structure is simple, the cleaning effect is good, the cross-flow fan blade is cleaned by fully utilizing the centrifugal force and the self-gravity of the condensate water drops, the cleaning is complete, the cleaning of the cross-flow fan blade is maximized, dust is prevented from accumulating on the cross-flow fan blade, and in addition, outdoor air is introduced when the cross-flow fan blade is cleaned, to achieve the function of replacing fresh air.

[0044] <Window air conditioner>

[0045] AsFigure 1 、 Figure 2a 、 Figure 2b 、 Figure 4a and Figure 4b As shown in the drawings, the embodiment provides a window air conditioner, comprising a shell 1, an evaporator 21, a cross-flow fan 22, an axial flow fan 27 and a condenser 28, the shell 1 is formed with an indoor cavity 11 and an outdoor cavity 12 located in the indoor and outdoor respectively; the indoor cavity 11 is formed with an air duct, the air duct is provided with the evaporator 21, the cross-flow fan 22 and a volute 23, the cross-flow fan 22 comprises cross-flow fan blades; the outdoor cavity 12 is provided with the axial flow fan 27 and the condenser 28; specifically, the shell 1 is formed with an indoor air inlet 111 at the front end of the indoor side, an indoor air outlet 112 at the top of the indoor side, and an air duct in the indoor cavity 11 between the indoor air inlet 111 and the indoor air outlet 112, the air duct inlet end is provided with the evaporator 21, and the evaporator 21 and the indoor air outlet 112 are provided with the cross-flow fan 22; the cross-flow fan 22 comprises cross-flow fan blades, a hub and a hub motor in driving connection with the hub, the cross-flow fan blades are arranged on the shaft side surface of the hub, the hub motor drives the hub to rotate, and then under the action of the cross-flow fan 22, the indoor air enters the air duct through the indoor air inlet 111, exchanges heat with the evaporator 21 when flowing through the evaporator 21, and then is discharged from the indoor air outlet 112 along the flow channel; the shell 1 is formed with an outdoor air inlet at the side of the outdoor side, an outdoor air outlet at the front end of the outdoor side, and the condenser 28 and the axial flow fan 27 are sequentially arranged between the outdoor air inlet and the outdoor air outlet in the outdoor cavity 12, under the action of the cross-flow fan blades, the outdoor air enters the outdoor cavity 12 through the outdoor air inlet, exchanges heat with the condenser 28 when flowing through the condenser 28, and then is discharged from the outdoor air outlet;

[0046] The window air conditioner further comprises a flow channel 31 communicating the air duct and the outdoor cavity 12; under the action of the cross-flow fan 22, the indoor air enters the air duct and exchanges heat with the evaporator 21, the outdoor air enters the air duct through the outdoor cavity 12 and the flow channel 31, the indoor air and the outdoor air mix to produce condensate drops, the condensate drops are collected into condensate water on the cross-flow fan blades when flowing through the cross-flow fan blades, the condensate water cleans the cross-flow fan blades under the action of the centrifugal force and its own gravity, and carries away the dust on the cross-flow fan blades;

[0047] In summary, the device for cleaning the cross-flow fan blade has simple structure, does not need to increase other moving parts and external water, mixes indoor air and outdoor air to generate condensate water drops needed for cleaning, fully utilizes centrifugal force and self-gravity of the condensate water drops to clean the cross-flow fan blade, has large cleaning strength, complete and comprehensive cleaning, simplifies the cleaning process, maximizes the cleaning of the cross-flow fan blade, ensures the quality of air blown out by the window air conditioner, avoids the problem of dust accumulation on the cross-flow fan blade to generate odor and breed bacteria, solves the problems of the existing cleaning device that cannot be used to clean the cross-flow fan blade, complicated cleaning process, incomplete cleaning and low cleaning efficiency; the cross-flow fan blade after cleaning has reduced weight, has increased energy efficiency under the same power compared with the refrigeration of the cross-flow fan blade, overcomes the disadvantage of the existing window machine self-cleaning that needs to sacrifice heat exchange effect; the cleaning of the cross-flow fan blade does not affect the refrigeration effect.

[0048] In addition, the introduction of outdoor air during the cleaning of the cross-flow fan blade enables the circulation of indoor and outdoor air, increases fresh air for the indoor, achieves the function of fresh air replacement, further improves the quality of indoor air, and expands the function of the window air conditioner; the mixing of outdoor hot air and indoor cold air generates condensate water, which has a humidifying effect on indoor air.

[0049] Further, the window air conditioner has a refrigeration mode; when the cross-flow fan blade needs to be cleaned, the window air conditioner is in the refrigeration mode, under the action of the cross-flow fan 22, indoor hot air entering the air duct and flowing through the evaporator 21 is converted into indoor cold air, outdoor cold air entering the outdoor cavity 12 and flowing through the condenser 28 is converted into outdoor hot air, the outdoor hot air enters the air duct through the flow channel 31, the indoor cold air and the outdoor hot air mix and exchange heat, and condensate water drops are generated, the condensate water drops flow through the cross-flow fan blade and adhere to the cross-flow fan blade and collect into condensate water, with the rotation of the cross-flow fan blade, the condensate water cleans the cross-flow fan blade under the action of centrifugal force and self-gravity, and carries away the dust on the cross-flow fan blade; the condensate water generated by the window air conditioner in the refrigeration mode is fully utilized to clean the cross-flow fan blade, without the need to increase additional moving parts and introduce external water, when the mixed air flow of indoor cold air and outdoor hot air flows through the cross-flow fan blade, the condensate water drops can fully cover the cross-flow fan blade, thereby completely and comprehensively cleaning the cross-flow fan blade, cleaning quickly, cleaning a large area, ensuring the surface cleanliness of the cross-flow fan blade and the quality of air blown out by the window air conditioner.

[0050] As Figure 3bAs shown, in order to make the outdoor air quickly and smoothly into the flow channel 31, the inlet end of the flow channel 31 is coaxially arranged with the axial flow fan 27, and the outlet end of the flow channel 31 is close to the cross-flow fan blade; the suction force of the axial flow fan 27 is the lowest at the shaft center, and under the action of the cross-flow fan 22, the outdoor air can smoothly enter the flow channel 31, the flow rate is fast and the flow is sufficient, the outdoor air and indoor air are fully contacted and complete heat exchange near the cross-flow fan 22, which can produce enough condensate drops, and as the cross-flow fan blade rotates, the condensate drops cover the entire cross-flow fan blade, ensuring the required water amount for cleaning, and improving the cleaning effect and efficiency;

[0051] Preferably, the flow channel 31 extends along the axial direction of the axial flow fan 27; under the action of the axial flow fan 27, the outdoor air enters the outdoor cavity 12, and under the action of the cross-flow fan 22, the outdoor air enters the air duct through the flow channel 31, which shortens the path of the outdoor air entering the air duct, reduces the flow resistance, and improves the heat exchange area and efficiency of the outdoor air and indoor air, thereby improving the efficiency of cleaning the cross-flow fan blade.

[0052] In order to improve the quality of the outdoor air entering the air duct through the flow channel 31, a filter screen is arranged at the inlet end of the flow channel 31 to filter the outdoor air.

[0053] In order to avoid the influence of the flow channel 31 on the operation of the window type air conditioner when the cross-flow fan blade does not need to be cleaned, a baffle 32 is arranged at the inlet end of the flow channel 31, and the baffle 32 can be controlled to move to open or close the flow channel 31; specifically, the baffle 32 can be driven by a first driving motor or manually driven; the movement of the baffle 32 can be rotation or linear movement;

[0054] When the cross-flow fan blade needs to be cleaned, the baffle 32 is controlled to move to open the flow channel 31, and the outdoor air smoothly enters the air duct under the action of the cross-flow fan blade; when the cross-flow fan blade does not need to be cleaned, the baffle 32 is controlled to move to close the flow channel 31, avoiding the outdoor air entering the air duct;

[0055] In order to make the baffle 32 and the flow channel 31 seal tightly when the flow channel 31 is closed, a sealing ring is further arranged between the baffle 32 and the flow channel 31, effectively blocking the outdoor air from entering the flow channel.

[0056] As shown, Figure 3a The indoor air outlet 112 is provided with a deflector 26, and the deflector 26 can be controlled to rotate; a plurality of deflectors 26 are arranged along the width direction of the indoor air outlet 112, and the plurality of deflectors 26 can be controlled to rotate; specifically, the deflector 26 can be driven by a second driving motor or manually driven;

[0057] When the through-flow fan blade is cleaned, the air deflector 26 is controlled to rotate to make the air in the air duct be discharged upward, and the condensed water is thrown out under the action of the through-flow fan blade. Due to the action of the air deflector 26, the condensed water is attached to the air deflector 26, so that the condensed water is prevented from being thrown to the indoor room to cause a safety hazard and reduce the user experience.

[0058] Specifically, the inclination direction of the air deflector 26 has a certain angle with the centrifugal force direction generated by the rotation of the through-flow fan blade (the angle depends on the limit angle a of the upward air deflection of the air deflector, and the limit angle a of the upward air deflection of the window air conditioner is usually between 20° and 48° relative to the centrifugal force direction of the through-flow fan blade); therefore, the condensed water will flow back to the indoor cavity 11 of the window air conditioner and fall on the evaporator 21, and finally the condensed water flows along the evaporator 21 to the water pan 24.

[0059] The water pan 24 is arranged in the indoor cavity 11 and below the evaporator 21, and can collect the condensed water of the evaporator 21; the ultrasonic device 25 is arranged in the water pan 24; when the through-flow fan blade needs to be cleaned, the condensed water in the water pan 24 can be converted into cold mist under the action of the ultrasonic device 25, and the indoor air enters the air duct, so that the humidity of the indoor air is improved, the amount of condensed water drops generated when the indoor air and outdoor air are mixed is increased, the amount of condensed water required for cleaning the through-flow fan blade is ensured, and the ability and efficiency of cleaning the through-flow fan blade are further improved; therefore, the ultrasonic device also has a humidifying function.

[0060] It should be noted that the humidity of the air entering the air duct can also be improved by other ways, for example, a humidifying device is arranged in the outdoor cavity 12 to improve the humidity of the outdoor air, and then the amount of condensed water required for cleaning the through-flow fan blade is improved.

[0061] The window air conditioner further comprises a controller and a detection member, the detection member is arranged in the indoor cavity 11 and is used to detect the dirt degree of the through-flow fan blade; the controller is electrically connected with the detection member, the first driving motor, the second driving motor and the ultrasonic device 25, and controls the window air conditioner to be in a corresponding mode according to the data of the detection member, controls the first driving motor and the second driving motor to act, and cleans the dust on the through-flow fan blade in time to ensure the quality of the discharged air of the window air conditioner.

[0062] When the dust on the through-flow fan blade needs to be cleaned, the controller controls the window air conditioner to be in a refrigeration mode according to the data of the detection member, drives the baffle 32 to move to make the flow channel 31 open by the first driving motor, makes the outdoor hot air mix with the indoor cold air in the air duct to generate condensed water drops and clean the through-flow fan blade, drives the air deflector 26 to rotate by the second driving motor to make the air in the air duct be discharged upward, and starts the ultrasonic device 25 to make the condensed water in the water pan 24 be converted into cold mist, so as to improve the humidity of the indoor air and be beneficial to generate more condensed water required for cleaning the through-flow fan blade;

[0063] When the cleaning of the through-flow fan blade is finished, the window air conditioner is controlled to be in a high wind gear mode or a heating mode, and the indoor cavity is dried by the high-speed rotation of the through-flow fan blade, so that the components in the indoor cavity are not attached by the condensed water for a long time, and bacteria breeding in the indoor cavity is avoided.

[0064] <Control method>

[0065] As Figure 5 shown, the present application further provides a control method of the window air conditioner described above, the window air conditioner has a high wind gear mode, and the control method comprises:

[0066] S1, when the through-flow fan blade needs to be cleaned, the window air conditioner is controlled to be in a cooling mode;

[0067] S2, the flow channel 31 is controlled to be opened, so that the outdoor hot air is mixed with the indoor cold air in the air duct to generate condensed water droplets and clean the through-flow fan blade.

[0068] Further, S2 comprises:

[0069] S21, the window air conditioner is controlled to start timing and the deflector 26 is rotated to discharge the air in the air duct;

[0070] S22, when the timing length reaches a first preset length, the ultrasonic device 25 is controlled to be started, so that the condensed water in the water pan 24 is converted into cold mist and mixed with the outdoor hot air and the indoor cold air in the air duct to generate condensed water droplets and clean the through-flow fan blade;

[0071] The control method further comprises:

[0072] S3, when the timing length reaches a second preset length, the flow channel 31 is controlled to be closed and the ultrasonic device 25 is controlled to stop running;

[0073] S4, the window air conditioner is controlled to be in a high wind gear mode;

[0074] S5, when the timing length reaches a third preset length, the window air conditioner is controlled to stop running or be in other modes.

[0075] The exemplary embodiments of the present application are specifically shown and described above. It should be understood that the present application is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present application is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the appended claims.

Claims

1. A window-type air conditioner comprising a casing formed with an indoor chamber and an outdoor chamber respectively located indoors and outdoors; characterized in that, The indoor cavity is formed with an air duct, the air duct is provided with an evaporator and a cross-flow fan, the cross-flow fan comprises cross-flow fan blades; the window type air conditioner further comprises a flow channel which is in communication with the air duct and the outdoor cavity; the outdoor cavity is provided with an axial flow fan and a condenser; the flow channel extends along the axial direction of the axial flow fan, the air inlet end of the flow channel is coaxially arranged with the axial flow fan, and the air outlet end of the flow channel is close to the cross-flow fan blades; Under the action of the cross-flow fan, indoor air enters the air duct and completes heat exchange with the evaporator, outdoor air enters the outdoor cavity and completes heat exchange with the condenser, and then enters the air duct through the flow channel; indoor air and outdoor air are mixed to generate condensate water droplets, and the condensate water droplets collect and clean the cross-flow fan blades when flowing through the cross-flow fan blades; The air outlet end of the air duct and the top of the shell are formed with an indoor air outlet, the indoor air outlet is provided with a guide vane, and the guide vane is controlled to rotate; When the condensate water cleans the cross-flow fan blades, the guide vane is controlled to rotate to discharge the air in the air duct upward, and the inclination direction of the guide vane satisfies: under the action of the cross-flow fan blades, the condensate water is thrown out, and due to the action of the guide vane, the condensate water flows back to the indoor cavity and finally flows into a water pan under the evaporator; the water pan is provided with an ultrasonic device; under the action of the ultrasonic device, the condensate water in the water pan is converted into cold mist.

2. The window-type air conditioner according to claim 1, characterized by The window type air conditioner has a refrigeration mode; when the cross-flow fan blades need to be cleaned, the window type air conditioner is in the refrigeration mode, indoor hot air enters the air duct and is converted into indoor cold air when flowing through the evaporator under the action of the cross-flow fan, outdoor hot air enters the air duct through the flow channel, indoor cold air and outdoor hot air generate condensate water droplets, the condensate water droplets adhere to the cross-flow fan blades and collect into condensate water, and the condensate water cleans the cross-flow fan blades under the action of centrifugal force and gravity.

3. The window-type air conditioner according to claim 2, characterized by Under the action of the axial flow fan, outdoor air enters the outdoor cavity, and under the action of the cross-flow fan, outdoor air enters the air duct through the flow channel.

4. The window-type air conditioner according to claim 3, characterized by The air inlet end of the flow channel is provided with a baffle, and the baffle is controlled to rotate to open or close the flow channel; When the cross-flow fan blades need to be cleaned, the baffle is controlled to move to open the flow channel; When the cross-flow fan blades do not need to be cleaned, the baffle is controlled to move to close the flow channel.

5. The control method of the window-type air conditioner according to claim 4, characterized by, It comprises: When the cross-flow fan blades need to be cleaned, the window type air conditioner is controlled to be in the refrigeration mode; The flow channel is controlled to be opened, so that outdoor hot air and indoor cold air in the air duct are mixed to generate condensate water droplets and clean the cross-flow fan blades.

6. The control method of the window type air conditioner according to claim 5, characterized by, The control of the flow channel to be opened, so that outdoor hot air and indoor cold air in the air duct are mixed to generate condensate water droplets and clean the cross-flow fan blades comprises: The window type air conditioner is controlled to start timing and the guide vane is rotated to discharge the air in the air duct upward; When the timing duration reaches a first preset duration, the ultrasonic device is controlled to be started, so that the condensate water in the water pan is converted into cold mist and mixed with outdoor hot air and indoor cold air in the air duct to generate condensate water droplets and clean the cross-flow fan blades.

7. The control method of the window type air conditioner according to claim 6, characterized by, The window air conditioner further comprises a high wind level mode; and after the flow channel is controlled to be opened, outdoor hot air is mixed with indoor cold air in the air duct to generate condensate drops and clean the cross-flow fan blade, the window air conditioner comprises: When the timing duration reaches the second preset duration, the flow channel is controlled to be closed and the ultrasonic device is controlled to stop running; The window air conditioner is controlled to be in the high wind level mode; When the timing duration reaches the third preset duration, the window air conditioner is controlled to stop running or be in other modes.

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