An air conditioner indoor unit, an air conditioner, and a control method of an indoor unit

Abstract

The application relates to an air conditioner indoor unit, an air conditioner and a control method of the indoor unit. The air conditioner indoor unit comprises: an air outlet main body having an air outlet channel; a heat exchange assembly having a heat exchange channel, the air inlet end of the heat exchange channel being communicated with an indoor environment, and the air outlet end being communicated with the air outlet channel; a fresh air assembly having a first flow channel and a second flow channel; the first flow channel being communicated between the outdoor and the air outlet channel, and the second flow channel being connected between the outdoor and the heat exchange assembly; wherein the condensate water in the second flow channel and the outdoor air in the first flow channel can exchange heat in the overlapping part. In the application, the second flow channel of the fresh air assembly can discharge the condensate water, bacteria breeding is avoided, the first flow channel can realize the exchange of indoor and outdoor air, and the outdoor air is cooled by the condensate water in the second flow channel, so that the cooling effect of the air conditioner indoor unit is prevented from being affected when the outdoor air is introduced.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an indoor air conditioning unit, an air conditioner, and a control method for the indoor unit. Background Technology

[0002] Rapid economic development and urbanization have led to increasingly severe air pollution, with a significant increase in harmful substances in the air. In this situation, traditional air conditioner indoor units need to maintain a closed indoor environment to ensure effective air conditioning. This results in a continuous increase in pollutants such as dust, smoke, and bacteria, while oxygen levels decrease, leading to increasingly poor indoor air quality and harming human health. Summary of the Invention

[0003] Therefore, it is necessary to provide an air conditioner indoor unit, air conditioner, and control method for the indoor unit to address the problem that current air conditioner indoor units cannot meet users' requirements for health, comfort, and environmental protection.

[0004] In a first aspect, this application provides an air conditioner indoor unit, comprising:

[0005] The main air outlet has an air outlet channel;

[0006] A heat exchange component has a heat exchange channel, wherein the air inlet end of the heat exchange channel is connected to the indoor environment, and the air outlet end is connected to the air outlet channel;

[0007] The fresh air assembly has a first flow channel and a second flow channel that at least partially overlap each other; the first flow channel is connected between the outside and the air outlet duct for introducing outdoor air into the air outlet duct; the second flow channel is connected between the outside and the heat exchange assembly for discharging condensate from the heat exchange assembly.

[0008] In this process, the condensate in the second flow channel and the outdoor air in the first flow channel can exchange heat at the overlapping part of the two.

[0009] In some embodiments, the condensate in the second flow channel flows in the opposite direction to the outdoor air in the first flow channel at the point where they overlap.

[0010] In some embodiments, the fresh air assembly includes a main body and a condenser pipe, the main body having an inner cavity configured as a portion of the first flow channel, the condenser pipe passing through the inner cavity, and the interior of the condenser pipe defining a second flow channel.

[0011] In some embodiments, the condenser tube is arranged in a spiral shape within the inner cavity.

[0012] In some embodiments, the fresh air assembly further includes a sterilization assembly, wherein the sterilization assembly internally defines a portion of the first flow channel and communicates with the inner cavity;

[0013] And / or, the fresh air assembly further includes a filter assembly, the filter assembly having an internally defined portion of the first flow channel and communicating with the inner cavity.

[0014] In some embodiments, the fresh air assembly further includes a damper assembly disposed on the main body, the damper assembly being used to adjust the opening and closing of the first flow channel and the air volume within the first flow channel.

[0015] In some embodiments, the indoor unit of the air conditioner further includes a flow guiding component, which is connected between the heat exchange component and the second flow channel, for guiding the condensate inside the heat exchange component to the second flow channel.

[0016] In some embodiments, the flow guiding component includes a water receiving tray disposed below the condensate outlet of the heat exchange component for collecting condensate.

[0017] In some embodiments, the flow guiding assembly further includes a water pump disposed in the water receiving tray, the water pump being used to pump the condensate in the water receiving tray to the second flow channel.

[0018] In some embodiments, the indoor unit of the air conditioner further includes a housing, and the air outlet body, the heat exchange component, and the fresh air component are all disposed inside the housing.

[0019] Secondly, this application provides an air conditioner, including the indoor unit described above.

[0020] Thirdly, this application provides a control method for an indoor unit of an air conditioner, the control method comprising the following steps:

[0021] Determine if the cooling mode is on;

[0022] When the cooling mode is turned on, if the fresh air function is set to on, the fresh air component in the indoor unit of the air conditioner will be turned on; if the fresh air function is set to automatic, the difference between the ambient temperature and the set target temperature will be obtained. When the difference is greater than or equal to the preset temperature, the number of times the indoor unit of the air conditioner will shut down due to over-temperature will be obtained.

[0023] The number of over-temperature shutdowns is compared with the preset number of shutdowns. If the number of over-temperature shutdowns is greater than or equal to the preset number of shutdowns, the fresh air component in the indoor unit of the air conditioner is turned on.

[0024] In some embodiments, the control method further includes the step of:

[0025] When the fresh air assembly is turned on, the working time of the sterilization component in the fresh air assembly is obtained;

[0026] When the working time of the sterilization component exceeds the preset working time, the first flow channel in the fresh air component is opened.

[0027] The aforementioned air conditioning indoor unit, air conditioner, and control method for the air conditioning indoor unit, based on heat exchange components for exchanging heat with the indoor air and air outlet through the air outlet duct, adds a fresh air component structure. On the one hand, the second flow channel of the fresh air component can discharge condensate from the heat exchange components, preventing condensate residue from remaining inside the heat exchange components and causing bacterial growth. On the other hand, the first flow channel of the fresh air component can realize the exchange of outdoor air and indoor air, improving indoor air quality. Furthermore, when outdoor air enters the air outlet duct from the first flow channel, it is cooled by the condensate in the second flow channel, preventing the introduction of outdoor air from affecting the cooling effect of the air conditioning indoor unit. Therefore, by setting up a fresh air component, the exchange of indoor and outdoor air can be achieved without affecting the cooling effect of the air conditioning indoor unit, thus improving indoor air quality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the indoor unit of the air conditioner in some embodiments of this application;

[0029] Figure 2 for Figure 1 A schematic diagram of the structure of a central air conditioning indoor unit after removing the outer casing;

[0030] Figure 3 This is a schematic diagram of the structure of the fresh air assembly in the indoor unit of an air conditioner according to some embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the main body and condenser pipe in the indoor unit of an air conditioner according to some embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the airflow guiding assembly in an air conditioner indoor unit according to some embodiments of this application;

[0033] Figure 6 This is a flowchart of the control method for an indoor air conditioning unit in some embodiments of this application;

[0034] Explanation of reference numerals in the attached drawings: 100, indoor unit of air conditioner; 10, main air outlet; 20, heat exchange component; 30, fresh air component; 40, air guide component; 50, housing; 21, air inlet; 22, air outlet; 31, first flow channel; 32, second flow channel; 33, main body; 34, condenser pipe; 35, sterilization component; 36, filter component; 41, drip tray; 42, water pump; 331, inner cavity. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] See Figure 1 , Figure 2 as well as Figure 3 This application provides an indoor air conditioning unit 100, including an air outlet body 10, a heat exchange component 20, and a fresh air component 30. The air outlet body 10 has an air outlet channel (not shown in the figure), and the heat exchange component 20 has a heat exchange channel (not shown in the figure). The air inlet end 21 of the heat exchange channel is connected to the indoor environment, and the air outlet end 22 is connected to the air outlet channel. The fresh air component 30 has a first flow channel 31 and a second flow channel 32 that at least partially overlap each other. The first flow channel 31 connects the outside and the air outlet channel and is used to introduce outdoor air into the air outlet channel. The second flow channel 32 connects the outside and the heat exchange component 20 and is used to discharge condensate in the heat exchange component 20. The condensate in the second flow channel 32 and the outdoor air in the first flow channel 31 can exchange heat at their overlapping portion.

[0042] It should be noted that the air outlet body 10 refers to a component that enables airflow to achieve air outlet. Specifically, the air outlet body 10 may include a drive motor, fan blades, a volute, and a fixed bracket, etc., wherein the air outlet channel is formed inside the volute, and the fan blades are rotatably mounted inside the volute. The drive motor is used to drive the fan blades to rotate, so as to generate airflow inside the volute.

[0043] Of course, the structure of the air outlet body 10 is not limited to the above structure, and may include other structures, as long as they can achieve air outlet, which will not be elaborated here.

[0044] The heat exchange component 20 refers to a component capable of exchanging heat with air to regulate the airflow temperature according to demand (cooling or heating). The heat exchange component 20 has an internal heat exchange channel for airflow. Air from the indoor environment enters through the air inlet 21 of the heat exchange channel, undergoes heat exchange within the channel to form cool or hot air as required, and is finally blown out from the air outlet 22 of the heat exchange channel.

[0045] As a specific embodiment, the heat exchange assembly 20 includes a finned tube heat exchanger (i.e., an evaporator) and a refrigerant. When air from the indoor environment enters through the air inlet 21 of the heat exchange channel, it reacts with the refrigerant, the airflow temperature decreases, and cold air is blown out from the air outlet 22 of the heat exchange channel, thereby achieving indoor cooling.

[0046] The fresh air component 30 can introduce outdoor air into the room, realizing the circulation of indoor and outdoor air. Specifically, the first flow channel 31 connects the outside and the air outlet channel, and can introduce outdoor air into the air outlet channel, and then blow it out from the air outlet channel together with the airflow after heat exchange through the heat exchange channel.

[0047] When indoor air enters the heat exchange channel and exchanges heat, condensate will be generated in the heat exchange component 20. If the condensate remains in the heat exchange component 20 for a long time, bacteria will grow, so the condensate needs to be drained.

[0048] The second flow channel 32 is connected between the outdoor unit and the heat exchange component 20, thereby draining the condensate in the heat exchange component 20 to the outdoor unit, ensuring the cleanliness of the inside of the heat exchange component 20 and preventing the growth of bacteria.

[0049] Furthermore, if the first flow channel 31 and the second flow channel 32 overlap at least partially, then in the overlapping part, the outdoor air in the first flow channel 31 can exchange heat with the condensate in the second flow channel 32, making full use of the condensate to cool the outdoor air entering the air outlet channel, and then blow it out together with the airflow that has undergone heat exchange in the heat exchange channel.

[0050] Therefore, through the above structure, on the one hand, the second flow channel 32 of the fresh air component 30 can drain the condensate in the heat exchange component 20, keeping the inside of the heat exchange component 20 clean and preventing bacteria growth due to the temporary retention of condensate. On the other hand, the first flow channel 31 of the fresh air component 30 can introduce outdoor air into the air outlet channel, and achieve cooling through heat exchange with condensate in the first flow channel 31. This not only makes full use of condensate but also prevents the introduced outdoor air from affecting the cooling effect of the indoor unit 100, achieving indoor and outdoor air circulation while ensuring the cooling effect.

[0051] In some embodiments, the condensate in the second flow channel 32 flows in the opposite direction to the outdoor air in the first flow channel 31 at the point where they overlap.

[0052] The condensate in the second flow channel 32 exchanges heat with the outdoor air in the first flow channel 31 at their overlapping section. Since the flow directions are opposite at this overlapping section, the temperature difference between the condensate and the outdoor air is increased, thereby enhancing the heat exchange capacity and ensuring the outdoor air is effectively cooled by the condensate. When the outdoor air is exhausted along with the heated indoor air in the air outlet duct, it prevents a decrease in cooling capacity due to excessively high outdoor air temperature, thus improving comfort.

[0053] like Figure 4 As shown, in some embodiments, the fresh air assembly 30 includes a main body 33 and a condenser pipe 34. The main body 33 has an inner cavity 331, which is configured as a portion of a first flow channel 31. The condenser pipe 34 passes through the inner cavity 331, and a second flow channel 32 is defined inside the condenser pipe 34.

[0054] The condenser tube 34 is inserted into the inner cavity 331, thus the condenser tube 34 and the inner cavity 331 are the overlapping part of the second flow channel 32 and the first flow channel 31. When outdoor air enters the inner cavity 331, that is, when outdoor air enters the first flow channel 31, the outdoor air can exchange heat with the condensate in the condenser tube 34 to achieve cooling of the outdoor air.

[0055] In some embodiments, the condenser tube 34 is arranged in a spiral shape within the inner cavity 331. Arranging the portion of the condenser tube 34 in the inner cavity 331 in a spiral shape increases the total length of the condenser tube 34 within the inner cavity 331, thereby increasing the contact area between the condensate and the outdoor air in the inner cavity 331 and improving the cooling effect.

[0056] It should be noted that the longer the condenser pipe 34 is within the inner cavity 331, the larger the contact area between the condensate and the outdoor air. Therefore, the length of the condenser pipe 34 within the inner cavity 331 can be adjusted according to the different needs of indoor air conditioners of different specifications, in order to better achieve the cooling effect on the outdoor air.

[0057] In addition, the condenser tube 34 can be made of copper tube or finned tube, etc. The appropriate material can be selected according to the cooling effect on the outdoor air, which will not be elaborated here.

[0058] Please refer to it again. Figure 3 In some embodiments, the fresh air assembly 30 further includes a sterilization assembly 35, the sterilization assembly 35 having a partially defined first flow channel 31 and communicating with the inner cavity 331. And / or, the fresh air assembly 30 further includes a filter assembly 36, the filter assembly 36 having a partially defined first flow channel 31 and communicating with the inner cavity 331.

[0059] Specifically, the sterilization component 35 is located downstream of the main body 33 along the direction of outdoor air flow. That is, outdoor air first enters the inner cavity 331 of the main body 33, and then enters the sterilization component 35 through the inner cavity 331, where it is disinfected and sterilized, ensuring that the outdoor air entering the air outlet duct is clean.

[0060] In addition, the sterilization component 35 can, but is not limited to, use ultraviolet light, Plasmacluster Ions, and silver ions to sterilize and disinfect the outdoor air entering the first flow channel 31.

[0061] Furthermore, the filter assembly 36 is disposed between the main body 33 and the sterilization assembly 35 along the direction of outdoor air flow, or disposed downstream of the sterilization assembly 35 along the direction of outdoor air flow. After being filtered by the filter assembly 36, large-volume pollutants such as dust and particulate matter in the outdoor air can be removed, improving the cleanliness of the air entering the air outlet duct.

[0062] As a specific embodiment, a filter element may be provided inside the filter assembly 36, wherein the filter element may be, but is not limited to, a filter structure such as activated carbon.

[0063] Specifically, outdoor air first enters the inner cavity 331 of the main body 33, where it exchanges heat with condensate to achieve cooling. Then, it is sterilized and disinfected by the sterilization component 35, and after being filtered by the filter component 36, it enters the air outlet duct together with the indoor air that has exchanged heat through the heat exchange channel, and is then discharged into the indoor environment.

[0064] In some embodiments, the fresh air assembly 30 further includes a damper assembly (not shown) disposed on the main body 33, the damper assembly being used to regulate the opening and closing of the first flow channel 31 and the air volume within the first flow channel 31.

[0065] Specifically, the damper assembly can open or close the first flow channel 31. When the damper assembly closes the first flow channel 31, the fresh air function of the indoor air conditioner is turned off, that is, the indoor unit 100 of the air conditioner only achieves cooling of the indoor air through the heat exchange component 20, and the indoor and outdoor air are not exchanged.

[0066] When the damper assembly opens the first flow channel 31, the fresh air function of the indoor air conditioner is activated, thereby enabling the circulation of indoor and outdoor air. At the same time, when the first flow channel 31 is open, the damper assembly can also adjust the air intake volume within the first flow channel 31, thereby controlling the amount of outdoor air entering the room.

[0067] It should be noted that the damper assembly may include one or more dampers, and the specific number of dampers can be adjusted according to actual needs. The damper is an airflow regulating valve, which can be used to control the opening or closing of the first flow channel 31, and to regulate the amount of airflow entering the first flow channel 31.

[0068] Please refer to the following: Figure 2 and Figure 5 In some embodiments, the air conditioner indoor unit 100 further includes a flow guiding component 40, which is connected between the heat exchange component 20 and the second flow channel 32, and is used to guide the condensate inside the heat exchange component 20 to the second flow channel 32.

[0069] When condensate is generated in the heat exchange component 20, the flow guiding component 40 can guide the condensate to flow smoothly into the second flow channel 32. Therefore, by setting the flow guiding component 40 between the heat exchange component 20 and the second flow channel 32, the condensate in the heat exchange component 20 can be discharged more thoroughly, avoiding the growth of bacteria inside the heat exchange component 20 due to incomplete condensate drainage.

[0070] In some embodiments, the flow guiding component 40 includes a water receiving tray 41, which is disposed below the condensate outlet of the heat exchange component 20 for collecting condensate.

[0071] The drip tray 41 can be used to collect condensate, preventing condensate from leaking into other structures of the air conditioner indoor unit 100 and ensuring a clean internal environment for the air conditioner indoor unit 100.

[0072] In some embodiments, the flow guiding assembly 40 further includes a water pump 42 disposed in the water receiving pan 41, the water pump 42 being used to pump the condensate in the water receiving pan 41 to the second flow channel 32.

[0073] The water pump 42 can draw condensate from the water receiving pan 41 and allow the condensate to flow smoothly into the second flow channel 32, and finally discharge it from the second flow channel 32.

[0074] In some embodiments, the indoor unit 100 of the air conditioner further includes a housing 50, and the air outlet body 10, the heat exchange component 20, and the fresh air component 30 are all disposed inside the housing 50. The housing 50 can cover the air outlet body 10, the heat exchange component 20, and the fresh air component 30 to form an integral structure, and can provide a certain degree of protection for all structures located inside the housing 50.

[0075] Based on the same concept as the air conditioner indoor unit 100 described above, this application provides an air conditioner including the air conditioner indoor unit 100 as described above.

[0076] Based on the same concept as the aforementioned air conditioner indoor unit 100, this application provides a control method for an air conditioner indoor unit 100. The control method includes the following steps:

[0077] S10: Determine whether the cooling mode is on.

[0078] Specifically, when the cooling mode of the indoor unit 100 is turned on, it indicates that the indoor unit 100 is in working condition. When the cooling mode is turned off, it indicates that the indoor unit 100 is in non-working condition.

[0079] S20: When the cooling mode is on, if the fresh air function is set to on, the fresh air component 30 in the indoor unit of the air conditioner will be turned on. If the fresh air function is set to automatic, the difference between the ambient temperature and the set target temperature will be obtained. When the difference is greater than or equal to the preset temperature, the number of times the indoor unit of the air conditioner 100 will shut down due to over-temperature will be obtained.

[0080] Specifically, the fresh air function settings can be adjusted on the controller at the user's operating terminal. Therefore, by determining the settings status of the fresh air function, the user's needs for this function can be identified.

[0081] When the fresh air function is set to "on", it means that the user needs to run the fresh air function, that is, to circulate indoor and outdoor air.

[0082] When the fresh air function is set to automatic, it determines whether to activate it based on environmental factors. Specifically, these factors include ambient temperature and the user-set target temperature. If the ambient temperature is higher than the target temperature, it indicates that the ambient temperature is too high and the indoor environment needs to be cooled.

[0083] S30: Compare the number of over-temperature shutdowns with the preset number of shutdowns. If the number of over-temperature shutdowns is greater than or equal to the preset number of shutdowns, then turn on the fresh air component 30 in the indoor unit 100 of the air conditioner.

[0084] Specifically, when the difference between the ambient temperature and the set target temperature is greater than or equal to the preset temperature, the indoor unit of the air conditioner will stop working. During this period, if the ambient temperature changes, and the difference between the ambient temperature and the set target temperature becomes less than the preset temperature, the indoor unit of the air conditioner will restart and begin working, and this process will repeat.

[0085] Therefore, the number of times the indoor unit of the air conditioner pauses during the above process is the number of times it stops due to over-temperature. When the number of times it stops due to over-temperature is greater than or equal to the preset number of times it stops, the fresh air component is activated.

[0086] S40: When the fresh air assembly 30 is turned on, obtain the working time of the sterilization component 35 in the fresh air assembly 30. When the working time of the sterilization component 35 is greater than the preset working time, turn on the first flow channel 31 in the fresh air assembly 30.

[0087] When the fresh air function is started, the sterilization component 35 in the fresh air component 30 is turned on simultaneously to perform pre-sterilization, sterilizing a portion of the air inside the sterilization component 35 to ensure that the outdoor air entering the first flow channel 31 remains clean.

[0088] Therefore, the working time of the sterilization component 35 is first obtained. When the working time of the sterilization component 35 is greater than the preset working time, it indicates that the pre-sterilization has been completed. At this time, the first flow channel 31 is opened by the air valve component so that the outdoor air can smoothly pass through the first flow channel 31 and enter the air outlet channel.

[0089] In practical use, when the indoor unit 100 of the air conditioner is turned on, the indoor air enters the heat exchange channel from the air inlet 21 under the action of the air outlet 10, and undergoes heat exchange in the heat exchange channel to achieve cooling, and then enters the air outlet channel.

[0090] Meanwhile, the condensate generated in the heat exchange component 20 can be collected in the water receiving pan 41 and pumped out by the water pump 42 into the second flow channel 32 and discharged from the second flow channel 32.

[0091] At this time, if the controller's fresh air function is set to "on", or if the number of over-temperature shutdowns of the indoor air conditioning unit 100 is greater than or equal to the preset shutdown number, the sterilization component 35 in the fresh air assembly 30 will be turned on first. The sterilization component 35 will first pre-sterilize the air inside itself. When the working time of the sterilization component 35 is greater than the preset working time, the first flow channel 31 of the fresh air assembly 30 will be turned on.

[0092] After the first flow channel 31 is opened, outdoor air first enters the inner cavity 331 of the main body 33. After being cooled by heat exchange with condensed water in the inner cavity 331, it is sterilized and disinfected under the action of the sterilization component 35, and filtered by the filter component 36 to ensure that the air entering the air outlet channel remains clean.

[0093] Outdoor air enters the air outlet duct through the first flow channel 31, mixes with indoor air entering the air outlet duct from the heat exchange channel, and is discharged through the air outlet duct together, thereby cooling the indoor environment and promoting indoor-outdoor air circulation.

[0094] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A control method for an indoor unit of an air conditioner, characterized in that, The indoor unit of the air conditioner includes: The main air outlet (10) has an air outlet channel; The heat exchange component (20) has a heat exchange channel, the air inlet (21) of which is connected to the indoor environment, and the air outlet (22) is connected to the air outlet channel; The fresh air assembly (30) has a first flow channel (31) and a second flow channel (32) that at least partially overlap each other; the first flow channel (31) is connected between the outside and the air outlet channel for introducing outdoor air into the air outlet channel; the second flow channel (32) is connected between the outside and the heat exchange assembly (20) for discharging condensate from the heat exchange assembly (20); In this process, the condensate in the second flow channel (32) and the outdoor air in the first flow channel (31) can exchange heat at the overlapping part of the two. The control method for the indoor unit of the air conditioner includes the following steps: Determine if the cooling mode is on; When the cooling mode is turned on, if the fresh air function is set to on, the fresh air component (30) in the air conditioner indoor unit (100) is turned on; if the fresh air function is set to automatic, the difference between the ambient temperature and the set target temperature is obtained, and when the difference is greater than or equal to the preset temperature, the number of times the air conditioner indoor unit (100) shuts down due to over-temperature is obtained. If the number of over-temperature shutdowns is greater than or equal to the preset number of shutdowns, then the fresh air assembly (30) in the indoor unit (100) of the air conditioner is turned on.

2. The control method for an indoor air conditioning unit according to claim 1, characterized in that, The condensate in the second channel (32) flows in the opposite direction to the outdoor air in the first channel (31) at the point where they overlap.

3. The control method for an indoor air conditioning unit according to claim 1, characterized in that, The fresh air assembly (30) includes a main body (33) and a condenser pipe (34). The main body (33) has an inner cavity (331). The inner cavity (331) is configured as part of the first flow channel (31). The condenser pipe (34) passes through the inner cavity (331) and the interior of the condenser pipe (34) defines the second flow channel (32).

4. The control method for an indoor air conditioning unit according to claim 3, characterized in that, The condenser tube (34) is arranged in a spiral shape in the inner cavity (331).

5. The control method for an indoor air conditioning unit according to claim 3, characterized in that, The fresh air component (30) also includes a sterilization component (35), wherein the sterilization component (35) internally defines a portion of the first flow channel (31) and communicates with the inner cavity (331); And / or, the fresh air assembly (30) further includes a filter assembly (36) that internally defines a portion of the first flow channel (31) and communicates with the inner cavity (331).

6. The control method for an indoor air conditioning unit according to claim 3, characterized in that, The fresh air assembly (30) also includes a damper assembly disposed on the main body (33), the damper assembly being used to adjust the opening and closing of the first flow channel (31) and the air volume in the first flow channel (31).

7. The control method for an indoor air conditioning unit according to claim 1, characterized in that, The indoor unit (100) of the air conditioner also includes a flow guiding component (40), which is connected between the heat exchange component (20) and the second flow channel (32) to guide the condensate inside the heat exchange component (20) into the second flow channel (32).

8. The control method for an indoor air conditioning unit according to claim 7, characterized in that, The flow guiding component (40) includes a water receiving tray (41), which is located below the condensate outlet of the heat exchange component (20) and is used to collect condensate.

9. The control method for an indoor air conditioning unit according to claim 8, characterized in that, The flow guiding component (40) also includes a water pump (42) disposed in the water receiving pan (41), the water pump (42) being used to pump the condensate in the water receiving pan (41) to the second flow channel (32).

10. The control method for an indoor air conditioning unit according to claim 1, characterized in that, The indoor unit (100) of the air conditioner also includes a housing (50), and the air outlet body (10), the heat exchange component (20) and the fresh air component (30) are all disposed inside the housing (50).

11. The control method for an indoor air conditioning unit according to claim 1, characterized in that, It also includes the following steps: When the fresh air assembly (30) is turned on, the working time of the sterilization component (35) in the fresh air assembly (30) is obtained; When the working time of the sterilization component (35) is longer than the preset working time, the first flow channel (31) in the fresh air component (30) is opened.

12. An indoor unit for an air conditioner, characterized in that, The control method for an indoor air conditioning unit as described in any one of claims 1-11.

13. An air conditioner, characterized in that, Includes the air conditioner indoor unit (100) as described in claim 12.

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