Air conditioner

Abstract

The invention relates to an air conditioner, and belongs to the technical field of air conditioners, the air conditioner comprises an indoor unit, an air conditioner fan, an indoor heat exchanger and a controller, and the indoor unit is provided with an air conditioner air outlet; the air conditioner fan is arranged in the indoor unit and used for conveying air conditioner air into a room through the air conditioner air outlet. Under the action of the air conditioner fan, indoor air is subjected to heat exchange through the indoor heat exchanger and then is output into a room through the air conditioner air outlet. The controller is configured to judge whether a risk working condition is entered or not, and if yes, risk working condition duration judgment is entered; in the risk working condition duration judgment, whether continuous operation of the air conditioner under the risk working condition reaches the first preset time or not is judged; and if yes, entering intervention opportunity judgment, if the intervention opportunity is reached, entering a cleaning mode, controlling the indoor heat exchanger to be used as an evaporator in the mode, and after an exit condition is reached, exiting the cleaning mode.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an air conditioner. Background Art

[0002] Air conditioning is an air conditioner, which refers to a device that uses artificial means to adjust and control the temperature, humidity, flow rate and other parameters of the ambient air in a building or structure. Air conditioning includes an air conditioner and an outdoor unit. The indoor temperature is adjusted by exchanging heat with the indoor air through the refrigerant flowing between the indoor unit and the outdoor unit.

[0003] In the prior art, the air conditioner includes an indoor heat exchanger and an outdoor heat exchanger. The indoor heat exchanger includes a body, in which the indoor heat exchanger is arranged. The indoor heat exchanger heats the air passing through the indoor heat exchanger, and the heat-exchanged air enters the room to adjust the indoor temperature.

[0004] However, as the air conditioner is used, impurities will stick to the indoor heat exchanger, and the impurities will continue to volatilize and emit odor. When the air conditioner is used, the odor emitted by the impurities will be blown out continuously, affecting the user experience. Summary of the invention

[0005] The present invention solves one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the present application aims to provide an air conditioner that determines whether it is in a dangerous working condition, and after confirming that it is in a dangerous working condition, waits for a period of time to enter a cleaning mode when the odor is most likely to affect the user, so as to avoid affecting the normal use of the user. In the cleaning mode, the indoor heat exchanger is used as an evaporator to reduce the temperature of the indoor heat exchanger so that condensed water is generated on the surface of the indoor heat exchanger, and the surface of the indoor heat exchanger is rinsed with condensed water to clean impurities on the indoor heat exchanger, thereby achieving the effect of removing odor.

[0007] To achieve the above object, the present invention provides an air conditioner, comprising: An indoor unit, wherein an air outlet for air conditioning is provided on the indoor unit; An air-conditioning fan, the air-conditioning fan is arranged in the indoor unit, and the air-conditioning fan is used to transport air-conditioning wind to the room through the air-conditioning outlet; Indoor heat exchanger, heat exchange is performed between the refrigerant flowing inside and the air to form a heating cycle or a cooling cycle; under the action of the air conditioner fan, the indoor air is heated by the indoor heat exchanger and then output to the room through the air conditioner outlet; A controller, wherein the controller is configured to: determine whether a risky operating condition has been entered, and if so, determine the duration of entering the risky operating condition; In the risk condition duration judgment, it is judged whether the air conditioner has been running continuously under the risk condition for a first preset time; If so, the intervention timing is judged, and if the intervention timing is reached, the cleaning mode is entered, in which the indoor heat exchanger is controlled to be used as an evaporator, and the cleaning mode is exited after the exit condition is reached.

[0008] In the technical solution, by judging whether it is in a dangerous working condition, and after confirming that it is in a dangerous working condition, waiting for a period of time to enter the cleaning mode when the odor is most likely to affect the user, so as to avoid affecting the normal use of the user. In the cleaning mode, the indoor heat exchanger is used as an evaporator to reduce the temperature of the indoor heat exchanger, so that condensed water is generated on the surface of the indoor heat exchanger, and the surface of the indoor heat exchanger is washed by the condensed water to clean the impurities on the indoor heat exchanger, thereby achieving the effect of removing odor.

[0009] In addition, the present application also provides an air conditioner, which includes: An indoor unit, wherein an air outlet for air conditioning is provided on the indoor unit; An air-conditioning fan, the air-conditioning fan is arranged in the indoor unit, and the air-conditioning fan is used to transport air-conditioning wind to the room through the air-conditioning outlet; Indoor heat exchanger, heat exchange is performed between the refrigerant flowing inside and the air to form a heating cycle or a cooling cycle; under the action of the air conditioner fan, the indoor air is heated by the indoor heat exchanger and then output to the room through the air conditioner outlet; A controller, wherein the controller is configured to: determine whether a risky operating condition has been entered, and if so, determine the duration of entering the risky operating condition; In the risk condition duration judgment, it is judged whether the cumulative operation of the air conditioner under the risk condition reaches a second preset time; If so, the intervention timing is judged, and if the intervention timing is reached, the cleaning mode is entered, in which the indoor heat exchanger is controlled to be used as an evaporator, and the cleaning mode is exited after the exit condition is reached.

[0010] In the technical solution, by judging whether it is in a dangerous working condition, and after confirming that it is in a dangerous working condition, waiting for a period of time to enter the cleaning mode when the odor is most likely to affect the user, so as to avoid affecting the normal use of the user. In the cleaning mode, the indoor heat exchanger is used as an evaporator to reduce the temperature of the indoor heat exchanger, so that condensed water is generated on the surface of the indoor heat exchanger, and the surface of the indoor heat exchanger is washed by the condensed water to clean the impurities on the indoor heat exchanger, thereby achieving the effect of removing odor.

[0011] In some embodiments of the present application, the controller is configured to obtain a temperature value A1 of the indoor heat exchanger when determining whether a risky operating condition has been entered; if A1 is less than a first preset temperature value B1, it is confirmed that a risky operating condition has been entered.

[0012] In the technical solution, under normal cooling conditions, the surface of the indoor heat exchanger is prone to sticking impurities and adsorbing odorous substances in the air, which will be released in a concentrated manner after the temperature of the indoor heat exchanger rises. Therefore, in the cooling mode where A1 is less than the first preset temperature value B1, the current state is considered to be in a risky condition.

[0013] In some embodiments of the present application, the air conditioner further comprises an outdoor unit, wherein a compressor is provided in the outdoor unit, and the compressor is used to transport refrigerant to the indoor heat exchanger; The controller is configured to enter a cleaning mode if the compressor receives a stop signal after entering the intervention timing judgment.

[0014] In the technical solution, when the duration of the risk condition is judged to meet the conditions, it is confirmed that it is necessary to enter the cleaning mode. In the judgment of the intervention timing, if the compressor receives a shutdown signal, it can be confirmed that the user does not need to use the air conditioner for cooling and heating modes. Therefore, the cleaning mode is entered in this state. The cleaning mode will not be suddenly entered during the user's normal use, so as to avoid affecting the user's normal use.

[0015] In some embodiments of the present application, the controller is configured to: after entering the intervention timing judgment, if the air conditioner receives a shutdown signal, enter the cleaning mode.

[0016] In some embodiments of the present application, the controller is configured to: after entering the intervention timing judgment, obtain the temperature value A1 of the indoor heat exchanger, and if A1 is greater than the second preset temperature value B2, enter the cleaning mode.

[0017] In the technical solution, in this judgment, if A1 is greater than B2, it is confirmed that the cooling mode has reached the user's required temperature and no further cooling is required, so the cleaning mode is entered to avoid affecting the user experience. Or if A1 is greater than B2, it means that the temperature of the indoor heat exchanger has increased. If it increases further, the odor on the indoor heat exchanger will be released, so the cleaning mode is intervened to clean the surface of the indoor heat exchanger to avoid the odor from affecting the user experience.

[0018] In some embodiments of the present application, the controller is configured to: after entering the cleaning mode, control the speed of the air-conditioning fan to a preset speed, and control the compressor to operate at a set frequency.

[0019] In the technical solution, the frequency of the compressor is adjusted to use the indoor heat exchanger as an evaporator to reduce the temperature of the indoor heat exchanger. The airflow flowing through the indoor heat exchanger is reduced by reducing the speed of the air conditioner fan to reduce the heat exchange efficiency between the air flow and the indoor heat exchanger, which can further reduce the temperature of the indoor heat exchanger and enable condensed water to be quickly generated on the surface of the indoor heat exchanger. In addition, reducing the speed of the air conditioner fan can also reduce the amount of cold air entering the room and reduce the impact on the indoor temperature.

[0020] In some embodiments of the present application, the controller is configured to: in the cleaning mode, obtain the temperature value A1 of the indoor heat exchanger at intervals, and if A1 is lower than a third preset temperature value B3, control the compressor to reduce the preset reduction frequency at the current frequency.

[0021] In the technical solution, if A1 is lower than B3, it means that the temperature of the indoor heat exchanger has reached a sufficiently low temperature, and condensed water can be generated on its surface. There is no need to further reduce the temperature of the indoor heat exchanger, so the frequency of the compressor is reduced to reduce the further reduction of the temperature of the indoor heat exchanger. At the same time, the reduced frequency of the compressor can also save electricity.

[0022] In some embodiments of the present application, the controller is configured as follows: the exit condition is to obtain the temperature value A1 of the indoor heat exchanger, and if A1 is lower than the minimum preset temperature value B4, then exit the cleaning mode.

[0023] In the technical solution, if A1 is lower than B4, it is confirmed that the temperature of the indoor heat exchanger has reached the required minimum temperature, and the surface of the indoor heat exchanger has generated enough condensed water to wash the surface of the indoor heat exchanger, thereby cleaning the impurities on the surface of the indoor heat exchanger. In addition, through this solution, the surface of the indoor heat exchanger is also prevented from freezing.

[0024] In some embodiments of the present application, the controller is configured as follows: the exit condition is that after entering the cleaning mode, the operating time of the compressor is recorded, and if the operating time of the compressor reaches a preset duration, the cleaning mode is exited.

[0025] In the technical solution, when the cleaning mode is entered and the preset duration is reached, it can be determined that the surface of the indoor heat exchanger has generated enough condensed water to wash the surface of the indoor heat exchanger, thereby cleaning the impurities on the surface of the indoor heat exchanger. And through this design, the air conditioner is prevented from being in the cleaning mode for a long time, ensuring that the air conditioner can be used normally.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of an air conditioner according to an embodiment of the present application; Figure 2 is a structural schematic diagram of an indoor unit according to an embodiment of the present application; Figure 3 is a front view of an indoor unit according to an embodiment of the present application; Figure 4 is a working flow chart of an air conditioner according to an embodiment of the present application; Figure 5 is a working flow chart of an air conditioner according to an embodiment of the present application; Figure 6 is a working flow chart of an air conditioner according to an embodiment of the present application; Figure 7 is a working flow chart of an air conditioner according to an embodiment of the present application; Figure 8 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig. 9 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.10 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.11 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.12 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.13 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.14 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.15 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.16 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.17 is a working flow chart of an air conditioner according to an embodiment of the present application; Fig.18 It is a working flow chart of the air conditioner according to the implementation mode of the present application.

[0028] In the above figures: 100, indoor unit; 200, outdoor unit. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0030] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description. In the present application, the air conditioner performs a refrigeration cycle of a wall-mounted air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, throttling, and evaporation, and supplies cold or heat to the air that has been conditioned and heat exchanged. The compressor compresses the refrigerant gas in a low-temperature and low-pressure state and discharges the refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve throttles the liquid phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure gas-liquid two-phase refrigerant.

[0031] In the evaporator, the refrigerant expanded in the expansion valve absorbs heat and evaporates, and is in a low temperature and low pressure state. Then the refrigerant gas returns to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled.

[0032] The air conditioner includes an indoor unit and an outdoor unit, and the indoor unit includes a body. In the whole cycle, the air conditioner can adjust the temperature of the indoor space. The outdoor unit of the wall-mounted air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger, and the indoor unit of the wall-mounted air conditioner includes an indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit. The indoor heat exchanger and the outdoor heat exchanger can be used as a condenser or an evaporator, respectively. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in the heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in the cooling mode.

[0033] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0034] As attached Figures 1 to 4 As shown, in an illustrative embodiment of the air conditioner of the present invention, the air conditioner includes: an indoor unit 100, an air-conditioning fan, an indoor heat exchanger and a controller, wherein an air-conditioning outlet is provided on the indoor unit 100; the air-conditioning fan is arranged in the indoor unit 100, and the air-conditioning fan is used to transport the air-conditioning wind to the indoor through the air-conditioning outlet; heat exchange is performed between the refrigerant flowing in the indoor heat exchanger and the air to form a heating cycle or a cooling cycle; under the action of the air-conditioning fan, the indoor air is output to the indoor through the air-conditioning outlet after heat exchange through the indoor heat exchanger.

[0035] The controller is configured to: determine whether the risk condition has been entered, and if so, determine the duration of the risk condition; in the risk condition duration determination, determine whether the air conditioner has been continuously operated under the risk condition for a first preset time; If so, the intervention timing judgment is entered. If the intervention timing is reached, the cleaning mode is entered. In this mode, the indoor heat exchanger is controlled to be used as an evaporator, and the cleaning mode is exited after the exit condition is met.

[0036] Through the above scheme, by judging whether it is in a dangerous working condition, and after confirming that it is in a dangerous working condition, waiting for a period of time to enter the cleaning mode when the odor is most likely to affect the user, so as to avoid affecting the normal use of the user. In the cleaning mode, the indoor heat exchanger is used as an evaporator to reduce the temperature of the indoor heat exchanger, so that condensed water is generated on the surface of the indoor heat exchanger, and the surface of the indoor heat exchanger is washed by the condensed water to clean the impurities on the indoor heat exchanger, thereby achieving the effect of removing odor.

[0037] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 In addition, the present application also provides an air conditioner, which includes: an indoor unit 100, an air-conditioning fan, an indoor heat exchanger and a controller, wherein the indoor unit 100 is provided with an air-conditioning outlet; the air-conditioning fan is arranged in the indoor unit 100, and the air-conditioning fan is used to transport the air-conditioning wind to the indoor through the air-conditioning outlet; heat exchange is performed between the refrigerant flowing in the indoor heat exchanger and the air to form a heating cycle or a cooling cycle; under the action of the air-conditioning fan, the indoor air is heat-exchanged through the indoor heat exchanger and then output to the indoor through the air-conditioning outlet.

[0038] The controller is configured to: determine whether a risk condition has been entered, and if so, determine the duration of entering the risk condition; In the risk condition duration judgment, it is judged whether the cumulative operation of the air conditioner under the risk condition reaches a second preset time; If so, the intervention timing judgment is entered. If the intervention timing is reached, the cleaning mode is entered. In this mode, the indoor heat exchanger is controlled to be used as an evaporator, and the cleaning mode is exited after the exit condition is met.

[0039] Through the above scheme, by judging whether it is in a dangerous working condition, and after confirming that it is in a dangerous working condition, waiting for a period of time to enter the cleaning mode when the odor is most likely to affect the user, so as to avoid affecting the normal use of the user. In the cleaning mode, the indoor heat exchanger is used as an evaporator to reduce the temperature of the indoor heat exchanger, so that condensed water is generated on the surface of the indoor heat exchanger, and the surface of the indoor heat exchanger is washed by the condensed water to clean the impurities on the indoor heat exchanger, thereby achieving the effect of removing odor.

[0040] Please refer to all the drawings. In addition, the present application also provides an air conditioner, which includes: an indoor unit 100, an air-conditioning fan, an indoor heat exchanger and a controller, wherein an air-conditioning outlet is provided on the indoor unit 100; the air-conditioning fan is arranged in the indoor unit 100, and the air-conditioning fan is used to transport the air-conditioning wind to the indoor through the air-conditioning outlet; heat exchange is performed between the refrigerant flowing inside the indoor heat exchanger and the air to form a heating cycle or a cooling cycle; under the action of the air-conditioning fan, the indoor air is heat exchanged through the indoor heat exchanger and then output to the indoor through the air-conditioning outlet.

[0041] The controller is configured to: determine whether a risk condition has been entered, and if so, determine the duration of entering the risk condition; In the risk condition duration judgment, it is judged whether the air conditioner has been running continuously under the risk condition for a first preset time; or it is judged whether the air conditioner has been running cumulatively under the risk condition for a second preset time; If so, the intervention timing judgment is entered. If the intervention timing is reached, the cleaning mode is entered. In this mode, the indoor heat exchanger is controlled to be used as an evaporator, and the cleaning mode is exited after the exit condition is met.

[0042] Through the above scheme, in the risk condition duration judgment, as long as any one of the conditions is met, it can be confirmed that the air conditioner needs to enter the cleaning mode, and then the intervention time judgment is entered, thereby improving the accuracy of the judgment.

[0043] In some embodiments, the operating logic of the controller in the present application is directly embedded in the normal cooling mode, that is, in the normal cooling mode, it is determined in real time whether the current operating condition is risky, and whether to enter the cleaning mode.

[0044] In some embodiments, the operating logic of the controller in this application is set to the clean odor mode separately, which needs to be turned on separately to determine whether it is currently in a risky working condition and whether to enter the cleaning mode. The clean odor mode can be turned on by the user through a remote control, an air conditioner internal panel, an APP, a cloud-based distribution, or other control methods. It is worth noting that the name of the clean odor mode in this application can be other names.

[0045] In some embodiments, the air conditioner further includes an outdoor unit 200, wherein a compressor is disposed in the outdoor unit 200, and the compressor is used to transport refrigerant to the indoor heat exchanger. An outdoor heat exchanger is also disposed in the outdoor unit 200, and the outdoor heat exchanger, the compressor and the indoor heat exchanger are connected and communicated, and the refrigerant flows between the outdoor heat exchanger and the indoor heat exchanger through the compressor.

[0046] In some embodiments, it is determined whether the air conditioner has been running continuously for a first preset time under a risky working condition. Specifically, when it is confirmed that the risky working condition has been entered, the running time of the compressor is recorded as a first duration, and the first duration is compared to see whether it has reached the first preset time. If so, the intervention timing is determined; if not, the running time of the compressor is continuously recorded until the first duration reaches the first preset time. If the system determines that the system is in a non-risky working condition or the air conditioner is turned off during the process, resulting in an interruption of the first duration, the first duration is cleared until the next time the risky working condition is entered and the first duration is counted again from zero.

[0047] In some embodiments, the specific value of the first preset time can be factory preset, user set or sent from the cloud. Alternatively, the first preset time is changed according to the current indoor temperature and humidity.

[0048] In some embodiments, it is determined whether the cumulative operation of the air conditioner under the risk condition has reached the second preset time. Specifically, when it is confirmed that the risk condition has been entered, the operation time of the compressor is recorded as the second duration. If the system determines that the air conditioner is in a non-risk condition or the air conditioner is turned off during the process, resulting in an interruption of the second duration, the value of the current second duration is recorded. When the risk condition is re-entered next time, the accumulation continues based on the value of the second duration last time until the second duration reaches the second preset time. After the second duration reaches the second preset time, the intervention time judgment is entered.

[0049] In some embodiments, the specific value of the second preset time can be factory preset, user set or sent from the cloud. Alternatively, the second preset time is changed according to the current indoor temperature and humidity.

[0050] In some embodiments, after exiting the cleaning mode, the first duration and the second duration are reset to zero.

[0051] In some embodiments, when determining whether a risky operating condition has been entered, if so, the duration of entering the risky operating condition is determined; if not, a new determination is made.

[0052] In another embodiment, when determining whether a risk condition has been entered, if not, then re-determine after waiting for a set time. The set time can be factory preset, user set, or sent from the cloud.

[0053] Please refer to all the drawings. In some embodiments, the controller is configured to obtain the temperature value A1 of the indoor heat exchanger when judging whether to enter the risky condition; if A1 is less than the first preset temperature value B1, it is confirmed that the risky condition has been entered. Through this solution, under normal cooling conditions, the surface of the indoor heat exchanger is prone to sticking impurities and adsorbing odorous substances in the air, and these odorous substances will be released in a concentrated manner after the temperature of the indoor heat exchanger rises. Therefore, in the cooling mode where A1 is less than the first preset temperature value B1, the current state is determined to be in a risky condition.

[0054] In some embodiments, when determining whether to enter a risky operating condition, obtain the temperature value A1 of the indoor heat exchanger; determine whether the temperature value A1 of the indoor heat exchanger is less than the first preset temperature value B1, if so, confirm that the risky operating condition has entered, and determine the duration of entering the risky operating condition. If not, re-determine.

[0055] In another embodiment, when determining whether to enter a risky working condition, if not, wait for a set time and then re-determine. The set time can be factory preset, user set, or sent from the cloud.

[0056] In some embodiments, the specific value of the first preset temperature value B1 can be factory preset, user set or sent from the cloud. Alternatively, the first preset temperature value B1 is changed according to the current indoor temperature and humidity. Generally, the lower the ambient temperature, the lower B1, and the higher the relative humidity, the higher B1.

[0057] In some embodiments, a heat exchange temperature sensor is provided on the indoor heat exchanger, and the heat exchange temperature sensor is used to detect and obtain the temperature value A1 of the indoor heat exchanger. The controller is configured to control the heat exchange temperature sensor to detect and obtain the temperature value A1 of the indoor heat exchanger when judging whether to enter the risky working condition; judge whether the temperature value A1 of the indoor heat exchanger is less than the first preset temperature value B1, and if so, confirm that the risky working condition has been entered, and judge the duration of entering the risky working condition. If not, re-judge.

[0058] In some embodiments, the temperature of the indoor heat exchanger is determined by calculating the indoor temperature and humidity. An ambient temperature sensor and an ambient humidity sensor are provided on the indoor unit 100. The ambient temperature sensor is used to detect and obtain the indoor temperature value A2. The ambient humidity sensor detects and obtains the indoor humidity value, and the temperature value A1 of the indoor heat exchanger is calculated by the indoor temperature value A2 and the indoor humidity value. With this design, there is no need to separately set up a heat exchange temperature sensor, which saves costs.

[0059] In some embodiments, the indoor unit 100 is only provided with an indoor temperature sensor, and the indoor temperature value A2 is obtained through the indoor temperature sensor, and the indoor humidity value is calculated using the indoor temperature value A2, and the temperature value A1 of the indoor heat exchanger is calculated by the indoor temperature value A2 and the indoor humidity value. It does not need to provide an indoor humidity sensor and a heat exchange temperature sensor, saving costs.

[0060] In some embodiments, the indoor unit 100 is only provided with an indoor temperature sensor, and the temperature value A1 of the indoor heat exchanger is directly calculated through the indoor temperature value A2 obtained by the indoor temperature sensor.

[0061] In some embodiments, the controller is configured to: after entering the intervention timing judgment, if the air conditioner receives a shutdown signal, it enters the cleaning mode. Through the above scheme, when the risk condition duration judgment meets the conditions, it is confirmed that it is necessary to enter the cleaning mode. In the intervention timing judgment, if the air conditioner receives a shutdown signal, it can be confirmed that the user does not need to use the air conditioner, so it enters the cleaning mode in this state, and will not suddenly enter the cleaning mode during the user's normal use, avoiding affecting the user's normal use.

[0062] Please refer to all the drawings. In some embodiments, the controller is configured to: after exiting the cleaning mode, control the air conditioner to shut down. Because the user enters the cleaning mode by receiving a shutdown signal through the air conditioner before entering the cleaning mode. Therefore, it means that the user needs to shut down the air conditioner. Therefore, after exiting the cleaning mode, the operation that the user has not yet performed is performed to improve the user experience.

[0063] In some embodiments, the controller is configured to: after entering the intervention timing judgment, if the compressor receives a stop signal, enter the cleaning mode. In the cooling mode, if the indoor temperature reaches the required temperature, the compressor will stop running, and the cleaning mode is intervened.

[0064] In some embodiments, the controller is configured to: after entering the intervention timing judgment, obtain the temperature value A1 of the indoor heat exchanger, and if the temperature value A1 of the indoor heat exchanger is greater than the second preset temperature value B2, enter the cleaning mode. Through this scheme, in this judgment, if A1 is greater than B2, it is confirmed that the cooling mode has reached the user's required temperature and no further cooling is required, so the cleaning mode is entered to avoid affecting the user experience. Or A1 is greater than B2, which means that the temperature of the indoor heat exchanger has increased. If it increases further, the odor on the indoor heat exchanger will be released, so the cleaning mode is intervened to clean the surface of the indoor heat exchanger to avoid the odor from affecting the user experience.

[0065] In some embodiments, the controller is configured to: enter the intervention timing judgment, obtain the temperature value A1 of the indoor heat exchanger, and judge whether the temperature value A1 of the indoor heat exchanger is greater than the second preset temperature value B2. If so, enter the cleaning mode; if not, re-judge.

[0066] In another embodiment, during the intervention timing judgment, it is determined whether A1 is greater than the second preset temperature value B2. If not, it is determined again after waiting for a set time. The set time can be factory preset, user set, or sent from the cloud.

[0067] In some embodiments, the specific value of the second preset temperature value B2 can be factory preset, user set or sent from the cloud. Alternatively, the second preset temperature value B2 is changed according to the current indoor temperature and humidity.

[0068] In some embodiments, in the judgment of entering the intervention timing, the temperature value A1 of the indoor heat exchanger is greater than the second preset temperature value B2, or the compressor receives a shutdown signal. As long as any one of the conditions is met, it can be determined that the intervention timing has been reached, and the cleaning mode is entered.

[0069] In some embodiments, an air guide plate is provided at the air outlet of the air conditioner. In the judgment of entering the intervention timing, if it is determined that the temperature value A1 of the indoor heat exchanger is greater than the second preset temperature value B2, and after entering the cleaning mode. If the compressor does not receive a shutdown signal before exiting the cleaning mode, after exiting the cleaning mode, the compressor, indoor heat exchanger, air conditioner fan and air guide plate are controlled to operate in the state before entering the cleaning mode.

[0070] Please refer to all the accompanying drawings. In some embodiments, the controller is configured to: after entering the cleaning mode, control the speed of the air conditioner fan to a preset speed, and control the compressor to operate at a set frequency. Through the above scheme, the frequency of the compressor is adjusted and the indoor heat exchanger is used as an evaporator to reduce the temperature of the indoor heat exchanger. By reducing the speed of the air conditioner fan, the airflow flowing through the indoor heat exchanger is reduced to reduce the heat exchange efficiency between the airflow and the indoor heat exchanger, which can further reduce the temperature of the indoor heat exchanger and enable the surface of the indoor heat exchanger to quickly generate condensed water. In addition, reducing the speed of the air conditioner fan can also reduce the amount of cold air entering the room and reduce the impact on the indoor temperature.

[0071] In some embodiments, the specific values ​​of the preset speed and the set frequency can be factory preset, user set, or sent from the cloud. Alternatively, the preset speed and the set frequency are changed according to the current indoor temperature and humidity. Compared with the normal cooling mode, the preset speed is lower and the set frequency is higher. Through this solution, the temperature of the indoor heat exchanger is quickly reduced to generate condensed water on the surface of the indoor heat exchanger.

[0072] In some embodiments, the preset speed may be zero, ie, the air conditioning fan stops running.

[0073] In some embodiments, after entering the cleaning mode, the air guide plate is controlled to flip to a preset position. The preset position is that the air guide plate closes the air outlet of the air conditioner. Through this solution, the cold air after heat exchange by the indoor heat exchanger cannot enter the room through the air outlet of the air conditioner, so as to reduce the impact on the indoor temperature and improve the user experience. In addition, in this solution, the cold air after heat exchange cannot be output, so the cooling of the indoor heat exchanger can be further accelerated to increase the speed of generating condensed water on the surface of the indoor heat exchanger.

[0074] In some embodiments, the preset position of the air guide plate can also be such that the air guide plate guides the airflow to the upper part of the room or away from the possible location of the user, so as to avoid the cold air after heat exchange in the indoor heat exchanger blowing directly to the user, causing discomfort to the user, thereby improving the user experience. In addition, in this solution, the air outlet of the air conditioner is partially covered by the air guide plate to reduce the output of the cold air after heat exchange, which can further accelerate the cooling of the indoor heat exchanger and increase the speed of generating condensed water on the surface of the indoor heat exchanger.

[0075] Please refer to all the drawings. In some embodiments, the controller is configured as follows: in the cleaning mode, the temperature value A1 of the indoor heat exchanger is obtained at intervals. If the temperature value A1 of the indoor heat exchanger is lower than the third preset temperature value B3, the compressor is controlled to reduce the preset reduction frequency at the current frequency. If A1 is lower than B3, it means that the temperature of the indoor heat exchanger has reached a sufficiently low temperature, and condensed water can be generated on its surface. There is no need to further reduce the temperature of the indoor heat exchanger, so the frequency of the compressor is reduced to reduce the temperature of the indoor heat exchanger. At the same time, the reduced frequency of the compressor can also save electricity.

[0076] Specifically, in the cleaning mode, the temperature value A1 of the indoor heat exchanger is obtained, and it is determined whether the temperature value A1 of the indoor heat exchanger is lower than the third preset temperature value B3; if so, the compressor is controlled to reduce the preset reduction frequency at the current frequency. If not, the above steps are repeated after waiting for an interval time.

[0077] In some embodiments, the specific values ​​of the third preset temperature value B3 and the interval time can be factory preset, user set or sent from the cloud. Alternatively, the third preset temperature value B3 and the interval time are changed according to the current indoor temperature and humidity.

[0078] In some embodiments, the controller is configured as follows: the exit condition is to obtain the temperature value A1 of the indoor heat exchanger, and if the temperature value A1 of the indoor heat exchanger is lower than the lowest preset temperature value B4, then exit the cleaning mode. Through this solution, if A1 is lower than B4, it is confirmed that the temperature of the indoor heat exchanger has reached the required minimum temperature, and the surface of the indoor heat exchanger has generated enough condensed water to rinse the surface of the indoor heat exchanger, thereby cleaning the impurities on the surface of the indoor heat exchanger. In addition, through this solution, the surface of the indoor heat exchanger is also prevented from freezing.

[0079] Specifically, the temperature value A1 of the indoor heat exchanger is obtained, and it is determined whether the temperature value A1 of the indoor heat exchanger is lower than the lowest preset temperature value B4. If so, the cleaning mode is exited. If not, the determination is repeated.

[0080] In another embodiment, when judging the exit condition, if no, then wait for a set time and judge again. The set time can be factory preset, user set or sent from the cloud.

[0081] In some embodiments, the specific value of the minimum preset temperature value B4 can be factory preset, user set or sent from the cloud. Alternatively, the minimum preset temperature value B4 is changed according to the current indoor temperature and humidity.

[0082] In some embodiments, the controller is configured to obtain the temperature value A1 of the indoor heat exchanger, determine whether the temperature value A1 of the indoor heat exchanger is lower than the third preset temperature value B3; if not, re-determine or wait for a set time to re-determine; if yes, determine whether the temperature value A1 of the indoor heat exchanger is lower than the lowest preset temperature value B4, and if yes, exit the cleaning mode. If not, control the compressor to reduce the preset reduction frequency on the current frequency, then re-obtain the temperature value A1 of the indoor heat exchanger, and repeat the above operation.

[0083] Please refer to all the drawings. In some embodiments, the controller is configured as follows: the exit condition is that after entering the cleaning mode, the running time of the cleaning mode is recorded. If the running time of the cleaning mode reaches a preset duration, the cleaning mode is exited.

[0084] Furthermore, the running time of the compressor after entering the cleaning mode is determined as the running time of the cleaning mode. The controller is configured as follows: the exit condition is that after entering the cleaning mode, the running time of the compressor is recorded, and if the running time of the compressor reaches the preset duration, the cleaning mode is exited. After entering the cleaning mode and reaching the preset duration, it can be determined that the surface of the indoor heat exchanger has generated enough condensed water to rinse the surface of the indoor heat exchanger, thereby cleaning the impurities on the surface of the indoor heat exchanger. And through this design, the air conditioner is prevented from being in the cleaning mode for a long time, ensuring the normal use of the air conditioner.

[0085] Specifically, the operation time T of the compressor in the cleaning mode is obtained, and it is determined whether T is greater than a preset duration. If so, the cleaning mode is exited; if not, the judgment is made again. In another embodiment, when judging the exit condition, if not, the judgment is made again after waiting for a set time. The set time can be factory preset, user set, or sent from the cloud.

[0086] In some embodiments, the specific value of the preset duration can be factory preset, user set or sent from the cloud. Alternatively, the preset duration is changed according to the current indoor temperature and humidity.

[0087] In some embodiments, in the exit condition, the running time of the compressor reaches a preset duration, or the temperature value A1 of the indoor heat exchanger is lower than the minimum preset temperature value B4. As long as any one of the conditions is met, it can be determined that the exit adjustment is met, and the cleaning mode is exited.

[0088] It is worth noting that if the temperature value A1 of the indoor heat exchanger, when judging the relationship between the temperature value A1 of the indoor heat exchanger and the third preset temperature value B3 and the minimum preset temperature value B4, if A1 is repeatedly judged to be higher than B3, it is determined that the current temperature of the indoor heat exchanger is within the normal range, and the exit condition is that the compressor operation time reaches the preset duration.

[0089] In some embodiments, after exiting the cleaning mode, the first preset time of continuous operation under the risk condition and the second preset time of cumulative operation under the risk condition are both reset to zero. That is, after exiting the cleaning mode, the first duration and the second duration are reset to zero.

[0090] In some embodiments, the controller is configured to, in the entire control logic, from determining whether to enter a risky operating condition to exiting the cleaning mode, if a shutdown signal is obtained, the air conditioner is controlled to shut down after exiting the cleaning mode. If no shutdown signal is obtained, the compressor, indoor heat exchanger, air conditioner fan and air guide plate are controlled to operate in the state before entering the cleaning mode.

[0091] Specifically, after exiting the cleaning mode, it is determined whether the air conditioner has received a shutdown signal, and if so, it is shut down. If not, the compressor, indoor heat exchanger, air conditioner fan and air guide plate are controlled to operate in the state before entering the cleaning mode.

[0092] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An air conditioner, It is characterized in that It includes: An indoor unit, wherein an air outlet for air conditioning is provided on the indoor unit; An air-conditioning fan, the air-conditioning fan is arranged in the indoor unit, and the air-conditioning fan is used to transport air-conditioning wind to the room through the air-conditioning outlet; Indoor heat exchanger, heat exchange is performed between the refrigerant flowing inside and the air to form a heating cycle or a cooling cycle; under the action of the air conditioner fan, the indoor air is heated by the indoor heat exchanger and then output to the room through the air conditioner outlet; A controller, wherein the controller is configured to: determine whether a risky operating condition has been entered, and if so, determine the duration of entering the risky operating condition; In the risk condition duration judgment, it is judged whether the air conditioner has been running continuously under the risk condition for a first preset time; If so, the intervention timing is judged, and if the intervention timing is reached, the cleaning mode is entered, in which the indoor heat exchanger is controlled to be used as an evaporator, and the cleaning mode is exited after the exit condition is reached.

2. An air conditioner, It is characterized in that It includes: An indoor unit, wherein an air outlet for air conditioning is provided on the indoor unit; An air-conditioning fan, the air-conditioning fan is arranged in the indoor unit, and the air-conditioning fan is used to transport air-conditioning wind to the room through the air-conditioning outlet; Indoor heat exchanger, heat exchange is performed between the refrigerant flowing inside and the air to form a heating cycle or a cooling cycle; under the action of the air conditioner fan, the indoor air is heated by the indoor heat exchanger and then output to the room through the air conditioner outlet; A controller, wherein the controller is configured to: determine whether a risky operating condition has been entered, and if so, determine the duration of entering the risky operating condition; In the risk condition duration judgment, it is judged whether the cumulative operation of the air conditioner under the risk condition reaches a second preset time; If so, the intervention timing is judged, and if the intervention timing is reached, the cleaning mode is entered, in which the indoor heat exchanger is controlled to be used as an evaporator, and the cleaning mode is exited after the exit condition is reached.

3. The air conditioner according to claim 1 or 2, It is characterized in that The controller is configured to, when determining whether a risky operating condition has been entered, obtain a temperature value A1 of the indoor heat exchanger; if A1 is less than a first preset temperature value B1, then confirming that a risky operating condition has been entered.

4. The air conditioner according to claim 3, It is characterized in that The air conditioner also includes an outdoor unit, in which a compressor is provided, and the compressor is used to transport refrigerant to the indoor heat exchanger; the controller is configured to: after entering the intervention timing judgment, if the air conditioner receives a shutdown signal, it enters the cleaning mode. The controller is configured to enter a cleaning mode if the compressor receives a stop signal after entering the intervention timing judgment.

5. The air conditioner according to claim 4, It is characterized in that The controller is configured to: after entering the intervention timing judgment, if the air conditioner receives a shutdown signal, enter the cleaning mode.

6. The air conditioner according to claim 5, It is characterized in that The controller is configured to: after entering the intervention timing judgment, obtain the temperature value A1 of the indoor heat exchanger, and if A1 is greater than the second preset temperature value B2, enter the cleaning mode.

7. The air conditioner according to claim 6, It is characterized in that The controller is configured to: after entering the cleaning mode, control the rotation speed of the air-conditioning fan to a preset rotation speed, and control the compressor to operate at a set frequency.

8. The air conditioner according to claim 7, It is characterized in that The controller is configured to: in the cleaning mode, obtain the temperature value A1 of the indoor heat exchanger at intervals, and if A1 is lower than a third preset temperature value B3, control the compressor to reduce a preset reduction frequency based on a current frequency.

9. The air conditioner according to claim 8, It is characterized in that The controller is configured as follows: the exit condition is to obtain the temperature value A1 of the indoor heat exchanger, and if A1 is lower than the lowest preset temperature value B4, then exit the cleaning mode.

10. The air conditioner according to claim 8, It is characterized in that The controller is configured such that: the exit condition is that after entering the cleaning mode, the operating time of the compressor is recorded, and if the operating time of the compressor reaches a preset duration, the cleaning mode is exited.

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