air conditioner

Abstract

This invention discloses an air conditioner, belonging to the field of air conditioner technology. The air conditioner includes an indoor unit, a remote control, a third temperature sensor, and a controller. The indoor unit is equipped with a first temperature sensor for detecting the ambient temperature of the area where the indoor unit is set. The remote control is equipped with a second temperature sensor for detecting the ambient temperature of the area where the remote control is placed. The third temperature sensor is located indoors and is used to detect the ambient temperature of the area where the third temperature sensor is placed. The controller is communicatively connected to the third temperature sensor. The controller is configured to: acquire the temperature of different areas indoors and determine the indoor ambient temperature; use the indoor ambient temperature as a reference temperature for the operation of the indoor unit to control its operation. This air conditioner, by corresponding the application scenario to the method of obtaining the indoor ambient temperature, prevents fluctuations in the air conditioning control system caused by temperature jumps, and even prevents abnormal shutdowns.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, and particularly relates to an air conditioner. Background Technology

[0002] Air conditioners essentially cool or heat the indoor environment by adjusting the ambient temperature of the user's area to a comfortable level. When the indoor unit of an air conditioner is operating, it uses the indoor ambient temperature as a reference temperature to improve its cooling or heating efficiency.

[0003] Currently, air conditioners are typically equipped with temperature sensors, which are usually installed at the air inlet of the indoor unit. For wall-mounted air conditioners, the air inlet is located at the top or upper part of the room, while for floor-standing air conditioners, it's usually also near the upper part. Since users are in the lower part of the room, the air inlet is relatively far from the user. This causes a significant discrepancy between the temperature value detected by the air conditioner's sensor and the actual temperature in the user's area. This can lead to the air conditioner shutting down when the temperature around the user is not at the set temperature. For example, when the indoor unit is heating, the temperature detected by the sensor is usually higher than the ambient temperature because hot air rises. If the indoor unit uses the sensor's temperature as its reference temperature, it will result in insufficient heating. Conversely, when the indoor unit is cooling, the temperature detected by the sensor is usually higher than the ambient temperature because cold air sinks. If the sensor uses this temperature as its reference temperature, it will result in over-cooling. Using the ambient temperature of the user's area as a reference temperature for the operation of the indoor unit of the air conditioner is ideal. However, both wall-mounted and floor-standing units are far from the user, which leads to a certain deviation between the temperature adjustment of the air conditioner and the user's needs, affecting the user experience.

[0004] Although some air conditioner indoor units have temperature sensors on their remote controls, and because remote controls are generally easily accessible to users, the temperature detected by the remote control's temperature sensor is usually closer to the temperature of the user's area than the temperature detected by the air conditioner's temperature sensor. However, in real life, after turning on the air conditioner indoor unit with the remote control, users usually leave the remote control aside or place it in a specific area. If the remote control is placed far away from the user or remains in a distant location, the temperature detected by the remote control's temperature sensor will deviate significantly from the temperature of the user's area. The placement of the remote control is highly uncertain, therefore, the reliability of using the temperature detected by the remote control's temperature sensor as a reference temperature for the air conditioner indoor unit's operation is unstable.

[0005] Currently, many small household appliances, such as air purifiers, temperature and humidity displays, and desk lamps, are typically equipped with temperature sensors. Compared to air conditioners, these small appliances are closer to the user, meaning that the temperature sensors on these appliances are more likely to reflect the ambient temperature in the user's area. If air conditioners used the temperature information detected by these small appliance sensors as the reference temperature for adjusting their operation, it would better meet user needs. However, since the lifespan and reliability of these small appliances are generally lower than those of air conditioners, if air conditioners relied entirely on the temperature detected by the sensors on these small appliances as the reference temperature for the indoor unit's operation, it might affect the reliability of the air conditioner's operation.

[0006] In view of the above, this application is hereby submitted. Summary of the Invention

[0007] To address the shortcomings of related technologies, this invention provides an air conditioner that acquires the temperature at different locations indoors, sets the priority of indoor ambient temperature sampling, and formulates corresponding temperature selection strategies for different application scenarios. This allows the air conditioner to select the appropriate sampling temperature for specific application scenarios, thereby preventing temperature jumps and increasing the reliability of the air conditioner's operation.

[0008] This invention provides an air conditioner, comprising:

[0009] The indoor unit is installed indoors;

[0010] The first temperature sensor is located at the air inlet of the indoor unit and is used to detect the ambient temperature at the air inlet of the indoor unit; the detected temperature of the first temperature sensor is the first detection temperature T1.

[0011] The remote control is connected to the indoor unit, and the distance between the placement of the remote control and the user's location is uncertain.

[0012] The second temperature sensor is located on the remote control and is used to detect the ambient temperature of the area where the remote control is placed; the detected temperature of the second temperature sensor is the second detection temperature T2.

[0013] A third temperature sensor, at least one of which is configured, is located indoors and close to the user's activity area indoors, and is used to detect the ambient temperature of the area where the third temperature sensor is placed. The detection temperature of the third temperature sensor is the third detection temperature T3.

[0014] The controller is configured to: acquire a first detection temperature T1, a second detection temperature T2, and a third detection temperature T3; and initially set the first detection temperature T1 within the normal temperature range;

[0015] When the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range H1, it is determined that the third detection temperature T3 is within the normal temperature range, and the current indoor ambient temperature Ts is determined as the third detection temperature T3.

[0016] When the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, it is determined that the third detection temperature T3 is within the abnormal temperature range, and it is determined whether the second detection temperature T2 is within the normal temperature range.

[0017] When the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range H2, it is determined that the second detection temperature T2 is within the normal temperature range, and the current indoor ambient temperature Ts is determined as the second detection temperature T2.

[0018] When the difference between the second detection temperature T2 and the first detection temperature T1 exceeds the second deviation range H2, it is determined that the second detection temperature T2 is within the abnormal temperature range, and the current indoor ambient temperature Ts is determined to be the first detection temperature T1.

[0019] The indoor ambient temperature Ts is used as the reference temperature Tc for the operation of the indoor unit to control its operation.

[0020] This technical solution involves installing a first temperature sensor on the indoor unit to detect the ambient temperature at the air inlet; installing a second temperature sensor on the remote control to detect the ambient temperature in the area where the remote control is placed; and installing a third temperature sensor, with the controller communicating with the third temperature sensor, to detect the ambient temperature in other areas of the room. The controller acquires the ambient temperature of different locations within the room to rationally select the value of the indoor ambient temperature Ts according to the application scenario. Furthermore, considering the switching between different scenarios, the solution correlates the application scenario with the method of determining the indoor ambient temperature and formulates corresponding switching strategies to ensure that the indoor ambient temperature does not fluctuate. The indoor ambient temperature is used as a reference temperature for the indoor unit's operation to prevent fluctuations in the air conditioning control system caused by temperature jumps, and even to prevent abnormal shutdowns.

[0021] In some embodiments, the controller is further configured to: determine that the third detection temperature T3 is unknown when the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, the difference between the second detection temperature T2 and the third detection temperature T3 is within the third deviation range H3, and the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range H2, and determine that the current indoor ambient temperature Ts is the first detection temperature T1 ± H1.

[0022] In some embodiments, when the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, the difference between the second detected temperature T2 and the first detected temperature T1 exceeds the second deviation range H2, and the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, the first detected temperature T1 is determined to be unknown, and the current indoor ambient temperature Ts is determined to be temperature Ty, wherein temperature Ty is a preset temperature.

[0023] In some embodiments, when the air conditioner is in heating mode, the first deviation range is H11, and when the air conditioner is in cooling mode, the first deviation range is H12, wherein H1 and H2 satisfy the relationship: H11>H12.

[0024] The controller is also configured to: when the third detection temperature T3 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H11; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H12.

[0025] In some embodiments, when the indoor unit is set as a wall-mounted unit, the first deviation range is H13; when the indoor unit is set as a floor-standing unit, the first deviation range is H14; wherein H13 and H14 satisfy the relationship: H13>H14;

[0026] The controller is also configured to: when the third detection temperature T3 is determined to be unknown, if the indoor unit is set to wall-mounted, determine the current indoor ambient temperature Ts as the first detection temperature T1±H13; if the indoor unit is set to floor-standing, determine the current indoor ambient temperature Ts as the first detection temperature T1±H14.

[0027] In some embodiments, when the indoor unit is set as a wall-mounted unit, the air conditioner is in heating mode with a first deviation range of H15; when the air conditioner is in cooling mode, the first deviation range is H16; wherein H15 and H16 satisfy the relationship: H15>H16.

[0028] The controller is also configured to: when the third detection temperature T13 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H15; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H16.

[0029] In some embodiments, when the indoor unit is configured as a cabinet unit, the first deviation range is H17 when the air conditioner is in heating mode and H18 when the air conditioner is in cooling mode; wherein H17 and H18 satisfy the relationship: H17>H18;

[0030] The controller is also configured to: when the third detection temperature T13 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H17; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H18.

[0031] In some embodiments, the indoor unit operates in a continuous cycle, and the controller is further configured to: when the change value ΔTs of the indoor ambient temperature reaches a first set value t within a preset cycle, determine the reference temperature for the next cycle as the sum of the reference temperature of the current cycle and the first set value t.

[0032] In some embodiments, the controller is further configured to: when the rate of change of indoor ambient temperature ΔV within a preset period reaches a second set value v, the duration of the preset period is set to S1; when the rate of change of indoor ambient temperature ΔV within a preset period does not reach the second set value v, the duration of the preset period is set to S2, wherein S1 and S2 satisfy the relationship: S2 < S1.

[0033] In addition, the present invention also provides an air conditioner, comprising:

[0034] The indoor unit is installed indoors;

[0035] The first temperature sampling source is located in the indoor unit and is used to collect temperature information of the indoor unit installation area; the temperature value collected by the first temperature sampling source is T1.

[0036] The second temperature sampling source is located on the remote control and is used to collect temperature information of the area where the remote control is placed; the temperature value collected by the second temperature sampling source is T2.

[0037] The third temperature sampling source is located in other indoor appliances and is used to collect temperature information of the area where the other appliances are located; the temperature value collected by the third temperature sampling source is T3.

[0038] The controller, installed in the indoor unit, is configured to: acquire a first detected temperature T1, a second detected temperature T2, and a third detected temperature T3; and initially set the first detected temperature T1 within the normal temperature range.

[0039] When the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range, the third detection temperature T3 is determined to be within the normal temperature range, and the current indoor ambient temperature Ts is determined to be the third detection temperature T3.

[0040] When the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, it is determined that the third detection temperature T3 is within the abnormal temperature range, and it is determined whether the second detection temperature T2 is within the normal temperature range.

[0041] When the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range, it is determined that the second detection temperature T2 is within the normal temperature range, and the current indoor ambient temperature Ts is determined as the second detection temperature T2.

[0042] When the difference between the second detection temperature T2 and the first detection temperature T1 exceeds the second deviation range H2, it is determined that the second detection temperature T2 is within the abnormal temperature range, and the current indoor ambient temperature Ts is determined to be the first detection temperature T1.

[0043] The indoor ambient temperature Ts is used as the reference temperature Tc for the operation of the indoor unit to control its operation.

[0044] Based on the above technical solution, in this embodiment of the invention, the air conditioner collects ambient temperatures from multiple temperature sampling sources in different areas of the room. The controller sets the sampling priority of the indoor ambient temperature Ts based on the temperature information collected from the temperature sampling sources, and formulates corresponding selection strategies in combination with the application scenario to reasonably determine the indoor ambient temperature Ts. The reasonably determined indoor ambient temperature Ts is then used as the reference temperature Tc for the indoor unit's operation, thereby improving the working efficiency and quality of the indoor unit. Furthermore, considering the switching between different scenarios, corresponding switching strategies are formulated to prevent jumps in the indoor ambient temperature Ts, avoiding fluctuations in the reference temperature Tc caused by jumps in the indoor ambient temperature Ts, which could lead to fluctuations in the air conditioning control system or even abnormal shutdowns. Attached Figure Description

[0045] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0046] Figure 1 This is a structural schematic diagram of an embodiment of the present invention when the indoor unit is a wall-mounted unit;

[0047] Figure 2 This is a structural schematic diagram of an embodiment of the present invention where the indoor unit is a cabinet unit;

[0048] Figure 3 This is a schematic diagram of the working principle of the indoor unit in one embodiment of the present invention;

[0049] Figure 4 This is a flowchart of the indoor ambient temperature sampling process in one embodiment of the present invention;

[0050] Figure 5 This is a flowchart illustrating the adjustment of a preset cycle duration in one embodiment of the present invention;

[0051] Figure 6This is a flowchart illustrating how the indoor unit adjusts the reference temperature within adjacent cycles, according to one embodiment of the present invention.

[0052] Figure 7 This is a schematic diagram illustrating the principle of a controller determining whether the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3 are normal in one embodiment of the present invention.

[0053] Figure 8 This is the workflow for sampling the indoor unit's operating reference temperature in one embodiment of the present invention. Figure 1 ;

[0054] Figure 9 This is the workflow for sampling the indoor unit's operating reference temperature in one embodiment of the present invention. Figure 2 ;

[0055] Figure 10 This is a flowchart illustrating the process of sampling reference temperature when the indoor unit is a cabinet in one embodiment of the present invention;

[0056] Figure 11 This is a flowchart illustrating the process of sampling reference temperature when the indoor unit is a cabinet and is performing cooling, according to one embodiment of the present invention. Detailed Implementation

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0058] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0060] As attached Figures 1-11 As shown, in an illustrative embodiment of the air conditioner of the present invention, the air conditioner includes an outdoor unit, an indoor unit, and a remote control. The air conditioner mentioned in this invention includes, but is not limited to, wall-mounted air conditioners and floor-standing air conditioners.

[0061] The outdoor unit is installed outdoors, and the indoor unit is connected to the outdoor unit. The indoor unit is usually installed on the upper part of the room.

[0062] Specifically, the indoor unit includes components such as a casing, a heat exchanger, a heat exchange fan, and a controller. The indoor unit has a heat exchange channel defined inside, and the heat exchanger and heat exchange fan are installed in the casing and located in the heat exchange channel. The casing includes an air inlet and an air outlet, which are connected to the heat exchange channel. By operating the heat exchange fan, fresh outdoor air is introduced into the heat exchange channel through the air inlet. After being processed by the heat exchanger to form air conditioning air, it flows into the room through the air outlet to meet the user's cooling or heating needs.

[0063] The controller is installed in the housing and is used to control the operation of components such as heat exchangers and heat exchange fans.

[0064] Users input commands into the controller via remote control or other means to select the indoor unit's operating mode and preset the target temperature. It should be noted that in practical applications, the indoor unit's operating modes vary depending on the model and user needs. This application focuses on two classic modes: cooling and heating. In cooling mode, the air flowing from the indoor unit into the room is cold air; in heating mode, the air flowing from the indoor unit into the room is hot air. This is common knowledge in the field and will not be elaborated further.

[0065] Users preset a target temperature for the indoor unit. When the controller controls the indoor unit to perform cooling or heating, it needs to use the indoor ambient temperature as a reference to improve the working efficiency and cooling or heating effect of the indoor unit.

[0066] Indoor units are typically equipped with a first temperature sensor, which is usually located at the air inlet and connected to the controller. The first temperature sensor is used to detect the ambient temperature at the air inlet of the indoor unit. Therefore, the first temperature sensor can serve as a first temperature sampling source to collect temperature information of the area where the indoor unit is installed. The temperature value detected by the first temperature sensor is T1, which is the temperature value collected by the first temperature sampling source.

[0067] The remote control is connected to the indoor unit, allowing users to control the indoor unit and select its operating mode. Controlling the indoor unit via remote control is standard technology in this field and will not be elaborated upon here.

[0068] The remote control is equipped with a second temperature sensor, which is used to detect the ambient temperature of the area where the remote control is placed. The second temperature sensor can also serve as a second temperature sampling source to collect temperature information of the area where the remote control is placed. The temperature value detected by the second temperature sensor is T2, which is the temperature value collected by the second temperature sampling source.

[0069] Currently, indoor spaces typically include electronic products such as desk lamps, air purifiers, and temperature and humidity sensors. These products are usually equipped with a third temperature sensor to monitor the indoor ambient temperature. This third temperature sensor, located within these electronic products, collects the ambient temperature of the area where they are placed. It acts as a third temperature sampling source, gathering temperature information from the area where these products are located. The temperature value detected by the third temperature sensor is T3, which is the temperature value collected by the third temperature sampling source.

[0070] It should be noted that since the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3 represent the temperatures of different locations within the room, the actual values ​​of the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3 are not exactly the same.

[0071] Since the air inlet of the indoor unit is usually far from the user, the first detected temperature T1 deviates from the temperature of the area where the user is located. Ideally, since the user usually needs to input commands using a remote control, the second detected temperature T2 should be closer to the temperature of the area where the user is located. However, in actual applications, after the user inputs commands using the remote control, they usually just throw the remote control away or place it in a specific area. Therefore, the distance between the remote control and the user is difficult to determine, resulting in a great deal of uncertainty in the temperature deviation between the second detected temperature T2 and the area where the user is located.

[0072] The positions of home appliances indoors are usually relatively fixed. Although some home appliances, such as table lamps, can be moved around freely according to the user's preferences and needs, in reality, especially in long-term living environments, people usually do not move home appliances frequently after placing them. Therefore, the distance between home appliances equipped with a third temperature sensor and the user is usually relatively fixed, and the distance between home appliances equipped with a third temperature sensor and the user is smaller than the distance between the indoor unit and the user.

[0073] Therefore, it can be seen that compared with the first detection temperature T1, the deviation between the third detection temperature T3 and the temperature of the user's location area is smaller, and compared with the second detection temperature T2, the certainty of the temperature deviation between the third detection temperature T3 and the user's location area is higher.

[0074] It should also be noted that although the probability of the third temperature sensor moving is usually less than that of the second temperature sensor, the position of the third temperature sensor is not fixed. Moreover, although the third temperature sensor can communicate with the controller so that the controller can obtain the third detected temperature T3, since the third temperature sensor is a component of other household appliances, the controller cannot know whether the position of the third temperature sensor has moved. When the third temperature sensor causes the third detected temperature T3 to be abnormal due to its placement, the controller cannot directly determine whether the third detected temperature T3 is abnormal or the controller's judgment accuracy on whether the third detected temperature T3 is abnormal is low.

[0075] It should be noted that in this application, the terms "within the normal temperature range" and "within the abnormal temperature range" refer to whether the temperature value is reasonable. A temperature within the abnormal temperature range does not necessarily mean that the temperature sensor is malfunctioning, and a malfunctioning temperature sensor does not necessarily mean that the temperature is within the abnormal temperature range.

[0076] For example, in an indoor environment with an ambient temperature of 25℃, if the first detected temperature T1 is 23℃, the second detected temperature T2 is 26℃, and the third detected temperature T3 is 18℃, then the third detected temperature T3 is determined to be within the abnormal temperature range, while the first and second detected temperatures T1 and T2 are determined to be within the normal temperature range. The third detected temperature T3 being 18℃ might be because the user placed ice cream next to the third temperature sensor. In this case, the third temperature sensor itself is not faulty and is working normally; it's just that other factors cause its detected temperature value to deviate significantly from the indoor ambient temperature. This is just an example; in practical applications, there are many reasons for abnormal temperature readings detected by temperature sensors, which will not be elaborated upon here.

[0077] The controller is installed on the indoor unit and communicates with the remote control. It receives commands from the remote control to control the indoor unit's cooling or heating functions. The controller is connected to a first temperature sensor, a second temperature sensor, and a third temperature sensor to obtain a first detected temperature T1, a second detected temperature T2, and a third detected temperature T3. Based on these temperatures, it determines the indoor ambient temperature Ts within a preset period and uses this temperature as a reference temperature Tc for the indoor unit's operation, thus controlling the indoor unit's function.

[0078] The controller is configured to acquire a first detected temperature T1, a second detected temperature T2, and a third detected temperature T3; and initially set the first detected temperature T1 within the normal temperature range. Since the first temperature sensor is a component carried by the air conditioner itself and is connected to the controller, the position of the first temperature sensor usually does not change. Therefore, initially setting the first detected temperature T1 within the normal temperature range results in deviations between the third detected temperature T3 and the first detected temperature T1, between the second detected temperature T2 and the first detected temperature T1, and between the second detected temperature T2 and the third detected temperature T3.

[0079] When the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range H1, the third detection temperature T3 is determined to be within the normal temperature range, and the current indoor ambient temperature Ts is determined to be the third detection temperature T3.

[0080] When the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, it is determined that the third detection temperature T3 is within the abnormal temperature range, and it is determined whether the second detection temperature T2 is within the normal temperature range.

[0081] When the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range, the second detection temperature T2 is determined to be within the normal temperature range, and the current indoor ambient temperature Ts is determined to be the second detection temperature T2.

[0082] When the difference between the second detection temperature T2 and the first detection temperature T1 exceeds the second deviation range H2, the second detection temperature T2 is determined to be within the abnormal temperature range, and the current indoor ambient temperature Ts is determined to be the first detection temperature T1.

[0083] The indoor ambient temperature Ts is used as the reference temperature Tc for the operation of the indoor unit to control its operation.

[0084] Furthermore, the controller is also configured to: when the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, but the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, and the difference between the second detected temperature T2 and the first detected temperature T1 is within the second deviation range H2, determine that the third detected temperature T3 is unknown, and determine that the current indoor ambient temperature Ts is the first detected temperature T1 ± H1.

[0085] The difference between the second detected temperature T2 and the first detected temperature T1 is within the second deviation range H2, indicating that the second detected temperature T2 is within the normal temperature range. Since the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, assuming that the second detected temperature T2 is within the normal temperature range, the third detected temperature T3 should also be determined to be within the normal temperature range. However, since the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, the third detected temperature T3 should not be determined to be within the normal temperature range, nor should it be determined to be within the abnormal temperature range. Therefore, the third detected temperature T3 is ultimately determined to be unknown, and the first detected temperature T1 ± H1 is taken as the indoor ambient temperature Ts.

[0086] Furthermore, the controller is also configured to: when the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, the difference between the second detected temperature T2 and the first detected temperature T1 exceeds the second deviation range H2, and the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, determine that the first detected temperature T1 is unknown, and determine the current indoor ambient temperature Ts as temperature Ty, where temperature Ty is a preset temperature.

[0087] Since the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, and the difference between the second detected temperature T2 and the first detected temperature T1 exceeds the second deviation range H2, the third detected temperature T3 and the second detected temperature T2 should ideally be determined to be within the abnormal temperature range. However, since the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, it indicates that the second detected temperature T2 and the third detected temperature T3 are within the normal temperature range, and the first detected temperature T1 is determined to be unknown. It should be noted that at this time, the first detected temperature T1 may be within the normal temperature range or within the abnormal temperature range. However, due to the uncertainty of the first detected temperature T1, it cannot be used as a reference to determine the second detected temperature T2 and the third detected temperature T3. Therefore, the controller determines the current indoor ambient temperature Ts as the preset temperature Ty to guide the operation of the indoor unit and prevent fluctuations in the air conditioner control system or even abnormal shutdown.

[0088] It should be noted that when the air conditioner is in heating mode, the preset temperature Ty is denoted as Tr, and when it is in cooling mode, the preset temperature Ty is denoted as Td. Temperatures Tr and Td can be preset via the remote control or by the air conditioner manufacturer. Temperatures Tr and Td are typically temperatures acceptable to most users, and their specific values ​​can be the same or different. For example, Tr and Td can both be set to 25℃; or Tr can be set to 18℃ and Td to 30℃.

[0089] It should also be noted that when the third detection temperature T3 is within the normal range, the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range H1, and the difference between the second detection temperature T2 and the third detection temperature T3 is within the third deviation range H3; when the second detection temperature T2 is within the normal range, the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range H2, and the difference between the second detection temperature T2 and the third detection temperature T3 is within the third deviation range H3; when the first detection temperature T1 is within the normal temperature range, the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range H1, and the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range H2.

[0090] In addition, it should be noted that the first deviation range H1 is not exactly the same in different scenarios.

[0091] In some embodiments, the first deviation range H1 is affected by the air conditioner's operating mode. When the air conditioner is in heating mode, the first deviation range is H11, and when the air conditioner is in cooling mode, the first deviation range is H12, where H1 and H2 satisfy the relationship: H11>H12.

[0092] The controller is configured to: when the third detected temperature T3 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detected temperature T1±H11; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detected temperature T1±H12.

[0093] In some embodiments, the first deviation range H1 is also affected by the indoor unit model. When the indoor unit is set as a wall-mounted unit, the first deviation range is H13; when the indoor unit is set as a floor-standing unit, the first deviation range is H14; wherein H13 and H14 satisfy the relationship: H13>H14.

[0094] The controller is configured such that when the third detection temperature T3 is determined to be unknown, if the indoor unit is set to wall-mounted, the current indoor ambient temperature Ts is determined to be the first detection temperature T1±H13; if the indoor unit is set to floor-standing, the current indoor ambient temperature Ts is determined to be the first detection temperature T1±H14.

[0095] Specifically, when the indoor unit is set as a wall-mounted unit, and the air conditioner is in heating mode, the first deviation range is H15; when the air conditioner is in cooling mode, the first deviation range is H16; wherein H15 and H16 satisfy the relationship: H15>H16. The controller is also configured to: when the third detected temperature T13 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detected temperature T1±H15; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detected temperature T1±H16.

[0096] The indoor unit is configured as a cabinet unit. When the air conditioner is in heating mode, the first deviation range is H17; when the air conditioner is in cooling mode, the first deviation range is H18; wherein H17 and H18 satisfy the relationship: H17 > H18. The controller is also configured to: when the third detected temperature T13 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detected temperature T1 ± H17; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detected temperature T1 ± H18.

[0097] When the air conditioner is working, the first detected temperature T1, the second detected temperature T2, and the third detected temperature T3 change in real time. This also means that the indoor ambient temperature Ts changes in real time. The indoor unit can be considered to be working in multiple continuously set cycles. Within the same cycle, the change value of the first detected temperature T1 is ΔT1, the change value of the second detected temperature T2 is ΔT2, the change value of the third detected temperature T3 is ΔT3, and the change value of the indoor ambient temperature Ts is ΔTs. ΔT1, ΔT2, ΔT3, and ΔTs satisfy the relationship: ΔT1≈ΔT2≈ΔT3≈ΔTs.

[0098] like Figure 6 As shown, when the change in indoor ambient temperature Ts in the current cycle reaches the first set value t, the reference temperature for the next cycle is determined to be the sum of the reference temperature of the current cycle and the first set value t. This indicates that the indoor ambient temperature Ts changes too rapidly within the current cycle, meaning that the difference between the indoor unit's reference temperature and that of the current cycle is large, which will reduce the operating quality of the indoor unit. Therefore, when the current indoor ambient temperature Ts changes too rapidly, the difference between the reference temperature of the next cycle and the reference temperature of the current cycle is reduced to ensure the operating quality of the indoor unit.

[0099] When an air conditioner is working, the duration of the preset cycle changes in real time, such as... Figure 5As shown, when the rate of change of indoor ambient temperature ΔV within the preset period reaches the second set value v, the duration of the preset period is set to S1; when the rate of change of indoor ambient temperature ΔV within the preset period does not reach the second set value v, the duration of the preset period is set to S2, wherein S1 and S2 satisfy the relationship: S2 < S1.

[0100] The indoor unit operates using the indoor ambient temperature Ts as its reference temperature Tc. As the indoor unit operates, the indoor ambient temperature Ts changes in real time. Therefore, the reference temperature Tc of the indoor unit lags behind the indoor ambient temperature Ts. Due to the time difference, there is a deviation between the indoor ambient temperature Ts and the reference temperature Tc. When the indoor ambient temperature changes too quickly, if the preset cycle is too long, the deviation between the indoor unit's reference temperature Tc and the indoor ambient temperature Ts will be large. Therefore, when the indoor ambient temperature changes too quickly, the length of the preset cycle should be reduced to minimize the deviation between the indoor unit's reference temperature Tc and the indoor ambient temperature Ts.

[0101] Similarly, when the indoor ambient temperature changes slowly, the deviation between the reference temperature Tc and the indoor unit ambient temperature Ts decreases. At this time, the duration of the preset cycle can be increased to reduce the operating frequency of the controller and save energy.

[0102] It should be noted that the specific values ​​of the cycle duration S1, S2, and t vary in different scenarios, and will not be elaborated here.

[0103] In this embodiment, the controller initially sets the first detection temperature T1 to be within the normal temperature range. By analyzing the relationship between the second detection temperature T2, the third detection temperature T3 and the first detection temperature T1, it can be determined whether the second detection temperature T2 and the third detection temperature T3 are within the normal temperature range. It can also ultimately determine whether the first detection temperature T1 is within the normal temperature range.

[0104] Specifically, such as Figure 7 As shown, the controller initially sets the first detection temperature T1 to be within the normal temperature range. When the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range, the second detection temperature T2 is determined to be within the normal temperature range.

[0105] If the controller is initially set to ensure that the first detection temperature T1 is within the normal temperature range, and the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range, then the third detection temperature T3 is determined to be within the normal temperature range.

[0106] Under the premise that the first detection temperature T1 is initially set within the normal temperature range, when the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, the difference between the second detection temperature T2 and the third detection temperature T3 is within the third deviation range H3, and the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range H2, the third detection temperature T3 is determined to be unknown.

[0107] The controller is initially set to operate within the normal temperature range for the first detected temperature T1. If the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, the difference between the second detected temperature T2 and the first detected temperature T1 exceeds the second deviation range H2, and the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, then the first detected temperature T1 is determined to be unknown. It should be noted that the determination of the first detected temperature T1 as unknown may be due to a malfunction of the first temperature sensor or other reasons, which will not be elaborated upon here.

[0108] It should be noted that in practical applications, since the first temperature sensor is configured within the indoor unit and is a component of it, the indoor unit typically has the function of determining whether the first temperature sensor is faulty. When the first temperature sensor fails, the air conditioner uses the preset temperature Tr as the reference temperature Tc in heating mode and the preset temperature Td as the reference temperature Tc in cooling mode. The indoor unit's method of determining whether the first temperature sensor is faulty is existing technology in this field and will not be elaborated upon here.

[0109] The working principle of the above air conditioner is as follows: Figure 8 As shown, the controller determines whether the first temperature sensor is faulty and whether the air conditioner is in cooling or heating mode. If the first temperature sensor is faulty, the controller controls the air conditioner to use the preset temperature Tr as the reference temperature Tc when in heating mode and the preset temperature Td as the reference temperature Tc when in cooling mode.

[0110] If the first temperature sensor is working normally, it is initially determined that the first detection temperature T1 is within the normal temperature range. Using the first detection temperature T1 as a reference, it is determined whether the third detection temperature T3 and the second detection temperature T2 are within the normal temperature range.

[0111] First, determine whether the third detection temperature T3 is within the normal temperature range. If the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range, then the third detection temperature T3 is determined to be within the normal temperature range. The current indoor ambient temperature Ts is then determined as the third detection temperature T3, and the third detection temperature T3 is used as the reference temperature Tc for the operation of the indoor unit.

[0112] If the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, then it is determined whether the difference between the third detection temperature T3 and the second detection temperature T2 is within the third deviation range H3.

[0113] If the difference between the third detection temperature T3 and the second detection temperature T2 is within the third deviation range H3, the third detection temperature T3 is determined to be unknown, and the current indoor ambient temperature Ts is determined to be the first detection temperature T1±H1. The first detection temperature T1±H1 is used as the reference temperature Tc for the operation of the indoor unit.

[0114] If the difference between the third detection temperature T3 and the second detection temperature T2 exceeds the third deviation range H3, then the third detection temperature T3 is determined to be within the abnormal temperature range, and then it is determined whether the second detection temperature T2 is within the normal temperature range.

[0115] If the difference between the second detected temperature T2 and the first detected temperature T1 is within the second deviation range, it is determined that the second detected temperature T2 is within the normal temperature range, and the current indoor ambient temperature Ts is determined as the second detected temperature T2. The second detected temperature T2 is used as the reference temperature Tc for the operation of the indoor unit.

[0116] If the difference between the second detection temperature T2 and the first detection temperature T1 exceeds the second deviation range H2, determine whether the difference between the second detection temperature T2 and the third detection temperature T3 is within the third deviation range H3.

[0117] If the difference between the second detection temperature T2 and the third detection temperature T3 exceeds the third deviation range H3, then the second detection temperature T2 is determined to be within the abnormal temperature range, and the current indoor ambient temperature Ts is determined to be the first detection temperature T1, with the first detection temperature T1 as the reference temperature Tc for the operation of the indoor unit.

[0118] If the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, then the first detected temperature T1 is determined to be unknown. When the air conditioner is in heating mode, the preset temperature Tr is used as the reference temperature Tc, and when it is in cooling mode, the preset temperature Td is used as the reference temperature Tc.

[0119] The air conditioner operates in multiple consecutive cycles, and the set duration of each cycle is not exactly the same and changes in real time. When the rate of change of indoor ambient temperature ΔV in the first cycle reaches the second set value v, the duration of the first cycle is set to S1. When the rate of change of indoor ambient temperature ΔV in the preset cycle does not reach the second set value v, the duration of the second cycle is set to S2, where S2 < S1.

[0120] When the change in indoor ambient temperature Ts in the first cycle reaches the first set value t, the reference temperature for the next cycle is determined to be the sum of the reference temperature of the current cycle and the first set value t.

[0121] It should be noted that since there may be multiple household appliances with temperature sensors besides the air conditioner, at least one third temperature sensor must be configured. Furthermore, the third temperature sensor can communicate with the controller, and the controller can acquire the temperature value T3, which is existing technology and will not be elaborated upon here. It should also be noted that this application uses a single third temperature sensor as an example. In practical applications, if multiple third temperature sensors are configured, the detected temperatures are prioritized, and a similar method is used to sample the indoor ambient temperature; this will not be elaborated upon here.

[0122] The following section details the method for determining the reference temperature Tc during the operation of the indoor unit of an air conditioner, using specific numerical values. The indoor unit is set to operate over N consecutive cycles; within the current cycle, the controller is configured to initially set the first detection temperature T1 to be within the normal temperature range.

[0123] Example 1: The indoor unit of the air conditioner is a wall-mounted unit, and the indoor unit is in heating mode.

[0124] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|≤4℃, the controller determines that the third detection temperature T3 is within the normal temperature range, takes the third detection temperature T3 as the indoor ambient temperature Ts in the current cycle, and takes the third detection temperature T3 as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0125] Since the third detection temperature T3 is within the normal temperature range, it will still be used as the indoor ambient temperature Ts′ in the next cycle. However, if the change in the third detection temperature T3 between two adjacent cycles is ΔT3≥0.5℃, that is, if the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles will be the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0126] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>4℃, but the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|≤3℃, the controller determines that the third detection temperature T3 is unknown, takes the first detection temperature T1±4℃ as the indoor ambient temperature Ts in the current cycle, and takes the first detection temperature T1±4℃ as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0127] Since the first detection temperature T1 ± 4℃ is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detection temperature T1 between two adjacent cycles is ΔT1 ≥ 0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs ≥ 0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc + 0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2℃ / min, the preset cycle length is set to 0.5min; if ΔV < 2℃ / min, the preset cycle length is set to 1min.

[0128] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>4℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>3℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤3℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The second detection temperature T2 is used as the indoor ambient temperature Ts in the current cycle, and the second detection temperature T2 is used as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0129] Since the second detection temperature T2 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the second detection temperature T2 between two adjacent cycles is ΔT2≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0130] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>4℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>3℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>3℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The first detection temperature T1 is taken as the indoor ambient temperature Ts in the current cycle, and the first detection temperature T1±4℃ is taken as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0131] Since the first detected temperature T1 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detected temperature T1 between two adjacent cycles is ΔT1≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0132] When the controller determines that the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3 are all within the abnormal temperature range, the indoor unit's preset temperature Tr is used as the reference temperature Tc, and the temperature Tr is 25℃.

[0133] Since the preset temperature Tr is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in temperature Tr between two adjacent cycles is ΔTr≥0.5℃, that is, the change in indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the duration of the preset cycle is set to 0.5min; if ΔV<2℃ / min, the duration of the preset cycle is set to 1min.

[0134] Example 2: The indoor unit of the air conditioner is a wall-mounted unit, and the indoor unit is in cooling mode. The difference between Example 2 and Example 1 is that in Example 2, the indoor unit is in cooling mode, while in Example 1, the indoor unit is in heating mode.

[0135] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|≤3℃, the controller determines that the third detection temperature T3 is within the normal temperature range, takes the third detection temperature T3 as the indoor ambient temperature Ts in the current cycle, and takes the third detection temperature T3 as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0136] Since the third detection temperature T3 is within the normal temperature range, it will still be used as the indoor ambient temperature Ts′ in the next cycle. However, if the change in the third detection temperature T3 between two adjacent cycles is ΔT3≥0.5℃, that is, if the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles will be the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0137] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3℃, but the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|≤2℃, the controller determines that the third detection temperature T3 is unknown, takes the first detection temperature T1±3℃ as the indoor ambient temperature Ts in the current cycle, and takes the first detection temperature T1±3℃ as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0138] Since the first detection temperature T1 ± 3℃ is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detection temperature T1 between two adjacent cycles is ΔT1 ≥ 0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs ≥ 0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc + 0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2℃ / min, the preset cycle length is set to 0.5min; if ΔV < 2℃ / min, the preset cycle length is set to 1min.

[0139] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤2℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The controller uses the second detection temperature T2 as the indoor ambient temperature Ts in the current cycle and uses the second detection temperature T2 as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0140] Since the second detection temperature T2 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the second detection temperature T2 between two adjacent cycles is ΔT2≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0141] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>2℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The first detection temperature T1 is taken as the indoor ambient temperature Ts in the current cycle, and the first detection temperature T1±3℃ is taken as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0142] Since the first detected temperature T1 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detected temperature T1 between two adjacent cycles is ΔT1≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0143] When the controller determines that the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3 are all within the abnormal temperature range, the indoor unit's preset temperature Td is used as the reference temperature Tc, and temperature Td is 25℃.

[0144] Since the preset temperature Td is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in temperature Td between two adjacent cycles is ΔTd≥0.5℃, that is, the change in indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the duration of the preset cycle is set to 0.5min; if ΔV<2℃ / min, the duration of the preset cycle is set to 1min.

[0145] Example 3: The indoor unit of the air conditioner is a floor-standing unit, and the indoor unit is in heating mode. The difference between Example 3 and Example 1 is that in Example 3, the indoor unit is a floor-standing unit, while in Example 1, the indoor unit is a wall-mounted unit.

[0146] like Figure 10 As shown, when the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|≤3℃, the controller determines that the third detection temperature T3 is within the normal temperature range, takes the third detection temperature T3 as the indoor ambient temperature Ts in the current cycle, and takes the third detection temperature T3 as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0147] Since the third detection temperature T3 is within the normal temperature range, it will still be used as the indoor ambient temperature Ts′ in the next cycle. However, if the change in the third detection temperature T3 between two adjacent cycles is ΔT3≥0.5℃, that is, if the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles will be the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0148] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3℃, but the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|≤2℃, the controller determines that the third detection temperature T3 is unknown, takes the first detection temperature T1±3℃ as the indoor ambient temperature Ts in the current cycle, and takes the first detection temperature T1±3℃ as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0149] Since the first detection temperature T1 ± 3℃ is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detection temperature T1 between two adjacent cycles is ΔT1 ≥ 0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs ≥ 0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc + 0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2℃ / min, the preset cycle length is set to 0.5min; if ΔV < 2℃ / min, the preset cycle length is set to 1min.

[0150] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤2℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The second detection temperature T2 is used as the indoor ambient temperature Ts in the current cycle, and the second detection temperature T2 is used as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0151] Since the second detection temperature T2 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the second detection temperature T2 between two adjacent cycles is ΔT2≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0152] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>2℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The first detection temperature T1 is taken as the indoor ambient temperature Ts in the current cycle, and the first detection temperature T1±3℃ is taken as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0153] Since the first detected temperature T1 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detected temperature T1 between two adjacent cycles is ΔT1≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0154] When the controller determines that the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3 are all within the abnormal temperature range, the indoor unit's preset temperature Tr is used as the reference temperature Tc, and the temperature Tr is 25℃.

[0155] Since the preset temperature Tr is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in temperature Tr between two adjacent cycles is ΔTr≥0.5℃, that is, the change in indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the duration of the preset cycle is set to 0.5min; if ΔV<2℃ / min, the duration of the preset cycle is set to 1min.

[0156] Example 4: The indoor unit of the air conditioner is a floor-standing unit, and the indoor unit is in cooling mode. The difference between Example 4 and Example 1 is that in Example 4, the indoor unit is a floor-standing unit and is in cooling mode, while in Example 1, the indoor unit is a wall-mounted unit and is in heating mode.

[0157] like Figure 11 As shown, when the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|≤2℃, the controller determines that the third detection temperature T3 is within the normal temperature range, takes the third detection temperature T3 as the indoor ambient temperature Ts in the current cycle, and takes the third detection temperature T3 as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0158] Since the third detection temperature T3 is within the normal temperature range, it will still be used as the indoor ambient temperature Ts′ in the next cycle. However, if the change in the third detection temperature T3 between two adjacent cycles is ΔT3≥0.5℃, that is, if the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles will be the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0159] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>2℃, but the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|≤1℃, the controller determines that the third detection temperature T3 is unknown, takes the first detection temperature T1±2℃ as the indoor ambient temperature Ts in the current cycle, and takes the first detection temperature T1±2℃ as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0160] Since the first detection temperature T1 ± 2℃ is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detection temperature T1 between two adjacent cycles is ΔT1 ≥ 0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs ≥ 0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc + 0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2℃ / min, the preset cycle length is set to 0.5min; if ΔV < 2℃ / min, the preset cycle length is set to 1min.

[0161] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>2℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>1℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤1℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The second detection temperature T2 is used as the indoor ambient temperature Ts in the current cycle, and the second detection temperature T2 is used as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0162] Since the second detection temperature T2 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the second detection temperature T2 between two adjacent cycles is ΔT2≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0163] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>2℃, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>1℃, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>1℃, then the controller determines that the second detection temperature T2 is within the normal temperature range and the third detection temperature T3 is within the abnormal temperature range. The first detection temperature T1 is taken as the indoor ambient temperature Ts in the current cycle, and the first detection temperature T1±2℃ is taken as the reference temperature Tc for the indoor unit to operate in the current cycle.

[0164] Since the first detected temperature T1 is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in the first detected temperature T1 between two adjacent cycles is ΔT1≥0.5℃, that is, the change in the indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of the indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the preset cycle length is set to 0.5min; if ΔV<2℃ / min, the preset cycle length is set to 1min.

[0165] When the controller determines that the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3 are all within the abnormal temperature range, the indoor unit's preset temperature Td is used as the reference temperature Tc, and temperature Td is 25℃.

[0166] Since the preset temperature Td is still used as the indoor ambient temperature Ts′ in the next cycle, but the change in temperature Td between two adjacent cycles is ΔTd≥0.5℃, that is, the change in indoor ambient temperature Ts between two adjacent cycles is ΔTs≥0.5℃, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5℃ of the current cycle. It should be noted that if the rate of change of indoor ambient temperature Ts in the current cycle is ΔV≥2℃ / min, the duration of the preset cycle is set to 0.5min; if ΔV<2℃ / min, the duration of the preset cycle is set to 1min.

[0167] It should be noted that in practical applications, there are multiple temperature sampling sources for collecting indoor temperature. Based on the above method for determining the reference temperature Tc during the operation of the indoor unit of the air conditioner, reasonable temperature selection strategies can be formulated for different application scenarios, which will not be elaborated here.

[0168] The aforementioned air conditioner collects ambient temperatures from multiple temperature sampling sources in different areas of the room. The controller prioritizes the sampling of the indoor ambient temperature Ts and formulates corresponding selection strategies based on the application scenario to reasonably determine the indoor ambient temperature Ts. The reasonably determined indoor ambient temperature Ts is then used as the reference temperature Tc for the indoor unit's operation, thereby improving the unit's efficiency and performance. Furthermore, considering the switching between different scenarios, corresponding switching strategies are implemented to prevent abrupt changes in the indoor ambient temperature Ts, thus avoiding fluctuations in the reference temperature Tc caused by these changes, which could lead to fluctuations in the air conditioning control system or even shutdown within abnormal temperature ranges.

[0169] The air conditioner described above has high sampling accuracy for indoor ambient temperature and is not prone to sudden changes. The air conditioner has high operational reliability, good working effect, and high working quality.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0171] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific application considerations.

Claims

1. An air conditioner, characterized in that, include: The indoor unit is installed indoors; A first temperature sensor is located at the air inlet of the indoor unit. The first temperature sensor is used to detect the ambient temperature at the air inlet of the indoor unit. The detected temperature of the first temperature sensor is the first detection temperature T1. The remote control is communicatively connected to the indoor unit, and the distance between the placement of the remote control and the user's location is uncertain; A second temperature sensor is disposed on the remote control. The second temperature sensor is used to detect the ambient temperature of the area where the remote control is placed. The detected temperature of the second temperature sensor is the second detection temperature T2. A third temperature sensor, at least one of which is configured, is located indoors and close to the user's activity area indoors, for detecting the ambient temperature of the area where the third temperature sensor is placed, and the detection temperature of the third temperature sensor is a third detection temperature T3. The controller is configured to: acquire a first detection temperature T1, a second detection temperature T2, and a third detection temperature T3; and initially set the first detection temperature T1 within the normal temperature range; When the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range H1, it is determined that the third detection temperature T3 is within the normal temperature range, and the current indoor ambient temperature Ts is determined as the third detection temperature T3. When the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, it is determined that the third detection temperature T3 is within the abnormal temperature range, and it is determined whether the second detection temperature T2 is within the normal temperature range. When the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range H2, it is determined that the second detection temperature T2 is within the normal temperature range, and the current indoor ambient temperature Ts is determined as the second detection temperature T2. When the difference between the second detection temperature T2 and the first detection temperature T1 exceeds the second deviation range H2, it is determined that the second detection temperature T2 is within the abnormal temperature range, and the current indoor ambient temperature Ts is determined to be the first detection temperature T1. The indoor ambient temperature Ts is used as the reference temperature Tc for the operation of the indoor unit to control its operation.

2. The air conditioner according to claim 1, characterized in that, The controller is further configured to: when the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, and the difference between the second detected temperature T2 and the first detected temperature T1 is within the second deviation range H2, determine that the third detected temperature T3 is unknown, and determine that the current indoor ambient temperature Ts is the first detected temperature T1 ± H1.

3. The air conditioner according to claim 2, characterized in that, The controller is further configured to: when the difference between the third detected temperature T3 and the first detected temperature T1 exceeds the first deviation range H1, the difference between the second detected temperature T2 and the first detected temperature T1 exceeds the second deviation range H2, and the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3, determine that the first detected temperature T1 is unknown, and determine the current indoor ambient temperature Ts as temperature Ty, wherein temperature Ty is a preset temperature.

4. The air conditioner according to claim 2, characterized in that, When the air conditioner is in heating mode, the first deviation range is H11; when the air conditioner is in cooling mode, the first deviation range is H12, where H1 and H2 satisfy the relationship: H11>H12. The controller is also configured to: when the third detected temperature T3 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detected temperature T1±H11; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detected temperature T1±H12.

5. The air conditioner according to claim 2, characterized in that, When the indoor unit is set as a wall-mounted unit, the first deviation range is H13; when the indoor unit is set as a floor-standing unit, the first deviation range is H14; wherein H13 and H14 satisfy the relationship: H13>H14; The controller is also configured to: when the third detection temperature T3 is determined to be unknown, if the indoor unit is set as a wall-mounted unit, determine the current indoor ambient temperature Ts as the first detection temperature T1±H13; if the indoor unit is set as a floor-standing unit, determine the current indoor ambient temperature Ts as the first detection temperature T1±H14.

6. The air conditioner according to claim 2, characterized in that, When the indoor unit is set as a wall-mounted unit, the air conditioner is in heating mode, and the first deviation range is H15; when the air conditioner is in cooling mode, the first deviation range is H16; wherein H15 and H16 satisfy the relationship: H15>H16; The controller is also configured to: when the third detection temperature T13 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H15; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H16.

7. The air conditioner according to claim 6, characterized in that, When the indoor unit is configured as a cabinet unit, the first deviation range is H17 when the air conditioner is in heating mode and H18 when the air conditioner is in cooling mode; wherein H17 and H18 satisfy the relationship: H17>H18; The controller is also configured to: when the third detection temperature T13 is determined to be unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H17; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts as the first detection temperature T1±H18.

8. The air conditioner according to claim 1, characterized in that, The indoor unit operates in a continuous cycle, and the controller is further configured to: when the change value ΔTs of the indoor ambient temperature reaches a first set value t within a preset cycle, determine the reference temperature for the next cycle as the sum of the reference temperature of the current cycle and the first set value t.

9. The air conditioner according to claim 1, characterized in that, The controller is further configured to: when the rate of change of indoor ambient temperature ΔV within a preset period reaches a second set value v, the duration of the preset period is set to S1; when the rate of change of indoor ambient temperature ΔV within a preset period does not reach the second set value v, the duration of the preset period is set to S2, wherein S1 and S2 satisfy the relationship: S2 < S1.

10. An air conditioner, characterized in that, include: The indoor unit is installed indoors; A first temperature sampling source is located at the indoor unit and is used to collect temperature information of the indoor unit installation area; the temperature value collected by the first temperature sampling source is T1; The second temperature sampling source is located on the remote control and is used to collect temperature information of the area where the remote control is placed; the temperature value collected by the second temperature sampling source is T2; A third temperature sampling source is installed on other household appliances in the room to collect temperature information of the area where the other household appliances are located; the temperature value collected by the third temperature sampling source is T3; A controller, installed in the indoor unit, is configured to: acquire a first detection temperature T1, a second detection temperature T2, and a third detection temperature T3; and initially set the first detection temperature T1 within the normal temperature range. When the difference between the third detection temperature T3 and the first detection temperature T1 is within the first deviation range, the third detection temperature T3 is determined to be within the normal temperature range, and the current indoor ambient temperature Ts is determined to be the third detection temperature T3. When the difference between the third detection temperature T3 and the first detection temperature T1 exceeds the first deviation range H1, it is determined that the third detection temperature T3 is within the abnormal temperature range, and it is determined whether the second detection temperature T2 is within the normal temperature range. When the difference between the second detection temperature T2 and the first detection temperature T1 is within the second deviation range, it is determined that the second detection temperature T2 is within the normal temperature range, and the current indoor ambient temperature Ts is determined as the second detection temperature T2. When the difference between the second detection temperature T2 and the first detection temperature T1 exceeds the second deviation range H2, it is determined that the second detection temperature T2 is within the abnormal temperature range, and the current indoor ambient temperature Ts is determined to be the first detection temperature T1. The indoor ambient temperature Ts is used as the reference temperature Tc for the operation of the indoor unit to control its operation.

Images