Air conditioner

Abstract

The invention discloses an air conditioner, which belongs to the technical field of air conditioners and comprises an indoor unit, a remote controller, a third temperature sensor and a controller. The indoor unit is provided with a first temperature sensor, and the first temperature sensor is used for detecting the environment temperature of an indoor unit setting area. The remote controller is provided with a second temperature sensor which is used for detecting the environment temperature of the remote controller placing area; the third temperature sensor is arranged indoors and used for detecting the environment temperature of the third temperature sensor placement area; the controller is in communication connection with the third temperature sensor; the controller is configured to obtain the temperatures of different indoor areas and determine the indoor environment temperature; and the indoor environment temperature serves as the reference temperature for operation of the indoor unit to control the indoor unit to work. According to the air conditioner, the application scene corresponds to the value taking method of the indoor environment temperature, so that fluctuation, even abnormal shutdown, of an air conditioner control system caused by temperature jump is prevented.

Description

Technical Field

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

[0002] The essence of air conditioner cooling or heating indoor environment is to adjust the ambient temperature of the user's area to a temperature suitable for the user. When the air conditioner indoor unit is working, it will use the indoor ambient temperature as its reference temperature to improve its cooling or heating efficiency.

[0003] At present, air conditioners are usually equipped with temperature sensors, which are usually installed at the air inlet of the indoor unit of the air conditioner. The air inlet of the indoor unit of a wall-mounted air conditioner is located at the top of the room or the upper space of the room, and the air inlet of the indoor unit of a vertical air conditioner is usually also set close to the upper space of the room, while the user is active in the lower space of the room. Therefore, the air inlet of the indoor unit of the air conditioner is far away from the user, resulting in a large deviation between the temperature value detected by the temperature sensor configured by the air conditioner and the temperature value of the user's area. The temperature around the user may not reach the set temperature, and the air conditioner may shut down. For example, when the indoor unit is heating, the temperature detected by the temperature sensor configured by the air conditioner is usually higher than the ambient temperature of the user's area due to the floating of hot air. If the indoor unit uses the temperature detected by the temperature sensor configured by the air conditioner as the reference temperature for the indoor unit to work, insufficient heating will result. When the indoor unit is cooling, the temperature detected by the temperature sensor configured by the air conditioner is usually higher than the ambient temperature of the user's area due to the sinking of cold air. If the indoor unit uses the temperature detected by the temperature sensor configured by the air conditioner as the reference temperature for the indoor unit to work, excessive cooling will result. It is ideal to use the ambient temperature of the user's area as the operating reference temperature of the air conditioner indoor unit. However, both wall-mounted and cabinet units are far away from the user, resulting in 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 are equipped with temperature sensors in the remote controller, since the remote controller is generally located in a position that is easy for the user to reach, the temperature detected by the temperature sensor configured in the remote controller is usually closer to the temperature of the user's area than the temperature detected by the temperature sensor configured in the air conditioner. However, in real life, after the user uses the remote controller to turn on the air conditioner indoor unit, the user usually throws the remote controller aside or places it in a specific area. If the placement area of ​​the remote controller is far away from the user or the remote controller is still far away from the user, the temperature detected by the temperature sensor configured in the remote controller has a large deviation from the temperature of the user's area, and the placement position of the remote controller has a large uncertainty. Therefore, the reliability of using the temperature detected by the temperature sensor configured in the remote controller as the reference temperature for the operation of the air conditioner indoor unit is unstable.

[0005] At present, many small household appliances such as air purifiers, temperature and humidity displays, desk lamps, etc. are usually equipped with temperature sensors. Compared with air conditioners, these small household appliances are closer to users, which means that the temperature sensors equipped with these small household appliances can better reflect the ambient temperature of the user's area. If the air conditioner uses the temperature information detected by the temperature sensors equipped with these small household appliances as the reference temperature for adjusting the operating status of the air conditioner, it can better meet user needs. However, since the lifespan and working reliability of these small household appliances are usually lower than that of air conditioners, if the air conditioner completely uses the temperature detected by the temperature sensor configured on the small household appliances as the reference temperature for the operation of the air conditioner indoor unit, it may affect the reliability of the air conditioner operation.

[0006] In view of this, this application is filed. Summary of the invention

[0007] In view of the shortcomings in the related technologies, the present invention provides an air conditioner, which obtains the temperatures at different locations in the room, sets the priority of indoor ambient temperature sampling, and formulates corresponding temperature selection strategies for different application scenarios, so that the air conditioner can select the corresponding sampling temperature in a specific application scenario, thereby preventing the sampling temperature from jumping and increasing the reliability of the air conditioner operation.

[0008] The present invention provides an air conditioner, comprising:

[0009] An indoor unit, which is installed indoors;

[0010] A first temperature sensor is provided 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 detection temperature of the first temperature sensor is a first detection temperature T1;

[0011] A remote controller is connected to the indoor unit for communication, and the distance between the remote controller and the user's location is uncertain;

[0012] A second temperature sensor is provided on the remote control, and is used to detect the ambient temperature of the area where the remote control is placed; the detection temperature of the second temperature sensor is a second detection temperature T2;

[0013] A third temperature sensor, which is configured as at least one, is arranged indoors and close to the user's indoor activity area, 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 a third detection temperature T3;

[0014] The controller is configured to: obtain a first detected temperature T1, a second detected temperature T2, and a third detected temperature T3; and preliminarily set the first detected temperature T1 to be within a normal temperature range;

[0015] When the difference between the third detected temperature T3 and the first detected temperature T1 is within the first deviation range H1, it is determined that the third detected temperature T3 is within the normal temperature range, and the current indoor ambient temperature Ts is determined to be the third detected temperature T3;

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

[0017] When the difference between the second detected temperature T2 and the first detected temperature T1 is within the second deviation range H2, it is determined that the second detected temperature T2 is within the normal temperature range, and the current indoor ambient temperature Ts is determined to be the second detected temperature T2;

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

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

[0020] The technical solution installs a first temperature sensor in the indoor unit and uses the first temperature sensor to detect the ambient temperature at the air inlet of the indoor unit; sets a second temperature sensor in the remote control and uses the second temperature sensor to detect the ambient temperature of the area where the remote control is placed; sets a third temperature sensor and the controller is in communication connection with the third temperature sensor and uses the third temperature sensor to detect the ambient temperature of other areas in the room; obtains the ambient temperature of different areas in the room through the controller to reasonably select the value of the indoor ambient temperature Ts according to the application scenario, and considers the switching between different scenarios, by corresponding the application scenario with the method of obtaining the indoor ambient temperature, and formulating a corresponding switching strategy to ensure that the indoor ambient temperature does not jump, and uses the indoor ambient temperature as the reference temperature when the indoor unit is running, so as to prevent the air-conditioning control system from fluctuating due to temperature jumps, or even abnormal shutdown.

[0021] In some of the embodiments, 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.

[0022] In some embodiments, 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 first detection temperature T1 exceeds 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, it is determined that the first detection temperature T1 is unknown, and the current indoor ambient temperature Ts is determined to be temperature Ty, where 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 it is determined that the third detected temperature T3 is 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.

[0025] In some embodiments, when the indoor unit is set to be an on-hook unit, the first deviation range is H13; when the indoor unit is set to be a cabinet unit, the first deviation range is H14; wherein H13 and H14 satisfy the relationship: H13>H14;

[0026] The controller is also configured to: when it is determined that the third detection temperature T3 is unknown, if the indoor unit is set to hang up, determine the current indoor ambient temperature Ts as the first detection temperature T1±H13; if the indoor unit is set to cabinet, determine the current indoor ambient temperature Ts as the first detection temperature T1±H14.

[0027] In some embodiments, when the indoor unit is set to on-hook, 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.

[0028] The controller is also configured to: when it is determined that the third detected temperature T13 is 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.

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

[0030] The controller is also configured to: when it is determined that the third detected temperature T13 is 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.

[0031] In some of the 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 of the next cycle as the sum of the reference temperature of the current cycle and the first set value t.

[0032] In some of the embodiments, the controller is further configured as follows: when the change rate ΔV of the indoor ambient temperature within a preset period reaches a second set value v, the duration of the preset period is set to S1; when the change rate ΔV of the indoor ambient temperature 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.

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

[0034] An indoor unit, which is installed indoors;

[0035] A first temperature sampling source is provided 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] A second temperature sampling source is provided in 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 set in other household appliances in the room and is used to collect temperature information of the area where the other household appliances are set; the temperature value collected by the third temperature sampling source is T3;

[0038] A controller installed in the indoor unit, the controller is configured to: obtain a first detected temperature T1, a second detected temperature T2, and a third detected temperature T3; and preliminarily set the first detected temperature T1 to be within a normal temperature range;

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

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

[0041] When 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 to be the second detected temperature T2;

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

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

[0044] Based on the above technical solution, the air conditioner in the embodiment of the present invention collects the ambient temperature of different indoor areas through multiple temperature sampling sources. The controller sets the sampling priority of the indoor ambient temperature Ts according to the temperature information collected by the temperature sampling source, and formulates a corresponding selection strategy in combination with the application scenario to reasonably determine the indoor ambient temperature Ts, and uses the reasonably determined indoor ambient temperature Ts as the reference temperature Tc when the indoor unit is running, so as to improve the working efficiency and working quality of the indoor unit. In addition, considering the switching between different scenarios, a corresponding switching strategy is formulated to prevent the indoor ambient temperature Ts from jumping, and to avoid the fluctuation of the air conditioning control system caused by the indoor ambient temperature Ts jumping and causing the reference temperature Tc jumping, or even abnormal shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0046] Figure 1 is a schematic structural diagram of an indoor unit in an embodiment of the present invention when it is an on-hook unit;

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

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

[0049] Figure 4 is a workflow diagram of indoor environment temperature sampling in one embodiment of the present invention;

[0050] Figure 5 is a flow chart of adjusting the preset cycle duration in one embodiment of the present invention;

[0051] Figure 6is a flow chart of adjusting the reference temperature of an indoor unit in adjacent cycles in one embodiment of the present invention;

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

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

[0054] Fig. 9 This is the workflow of indoor unit operation reference temperature sampling in one embodiment of the present invention. Figure 2 ;

[0055] Fig.10 is a flowchart of reference temperature sampling when the indoor unit is a cabinet and heating is performed in one embodiment of the present invention;

[0056] Fig.11 It is a working flow chart of reference temperature sampling when the indoor unit is a cabinet and cooling is performed in one embodiment of the present invention. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] As attached Figure 1-Figure 11 As shown, in an exemplary embodiment of the air conditioner of the present invention, the air conditioner comprises an outdoor unit, an indoor unit and a remote controller. The air conditioner mentioned in the present invention includes but is not limited to a wall-mounted air conditioner and a cabinet air conditioner.

[0061] The outdoor unit is installed outdoors, the indoor unit is connected to the outdoor unit, and the indoor unit is usually installed above the room.

[0062] Specifically, the indoor unit includes components such as a casing, a heat exchanger, a heat exchange fan and a controller; a heat exchange channel is defined inside the indoor unit, and the heat exchanger and the 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, and the air inlet and the air outlet are respectively connected to the heat exchange channel. Through the operation of the heat exchange fan, outdoor fresh air is introduced into the heat exchange channel from the air inlet, and after heat exchange treatment by the heat exchanger to form air-conditioned air, it flows into the room from the air outlet to meet the user's cooling or heating needs.

[0063] The controller is installed in the casing and is used to control the operation of components such as the heat exchanger and heat exchange fan.

[0064] The user inputs instructions to the controller through a remote control or the like to select the working mode of the indoor unit and preset the target temperature. It should be noted that in actual applications, the working modes of the indoor unit vary according to different models and user needs. In this application, two classic modes, cooling or heating, are selected for introduction. Among them, the cooling mode means that the air flowing from the indoor unit to the room is cold air, and the cooling mode means that the air flowing from the indoor unit to the room is hot air. This is common knowledge in the art and will not be repeated.

[0065] The user presets the 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] The indoor unit is usually 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 be used as a first temperature sampling source to collect temperature information of the indoor unit installation area; the temperature value detected by the first temperature sensor is T1, that is, the temperature value collected by the first temperature sampling source is T1.

[0067] The remote control is connected to the indoor unit for communication. The user can remotely control the operation of the indoor unit and select the working mode of the indoor unit through the remote control. Controlling the operation of the indoor unit through the remote control belongs to conventional technology in the field and will not be described in detail 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 be used 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, that is, the temperature value collected by the second temperature sampling source is T2.

[0069] At present, electronic products such as desk lamps, air purifiers, and temperature and humidity detectors are usually installed indoors. These electronic products are usually equipped with a third temperature sensor to detect the indoor ambient temperature. The third temperature sensor installed in these electronic products can collect the ambient temperature of the area where these electronic products are located. The third temperature sensor can be used as a third temperature sampling source to collect temperature information of the area where these electronic products are placed; the temperature value detected by the third temperature sensor is T3, that is, the temperature value collected by the third temperature sampling source is T3.

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

[0071] Since the air inlet of the indoor unit is usually far away from the user, the first detected temperature T1 deviates from the temperature of the user's location area; ideally, since the user usually needs to use a remote control to input commands, the second detected temperature T2 is closer to the temperature of the user's location area, but in actual applications, the user usually throws the remote control away or places it in a specific area after inputting commands through the remote control. Therefore, the distance between the remote control and the user is difficult to determine, resulting in great uncertainty in the temperature deviation between the second detected temperature T2 and the user's location area.

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

[0073] 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 deviation between the third detection temperature T3 and the temperature of 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 lower than that of the second temperature sensor, the position of the third temperature sensor is not fixed. Moreover, although the third temperature sensor can be connected to the controller for communication 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 position, the controller cannot directly determine that 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 the present application, the detected temperature being within the normal temperature range and within the abnormal temperature range refers to whether the temperature value is reasonable. The detected temperature being within the abnormal temperature range does not mean that the temperature sensor is faulty, and a temperature sensor fault does not mean that the temperature is within the abnormal temperature range.

[0076] For example, in a room with an ambient temperature of 25°C, the first detected temperature T1 is 23°C, the second detected temperature T2 is 26°C, and the third detected temperature T3 is 18°C, then the third detected temperature T3 is determined to be within the abnormal temperature range, and the first detected temperature T1 and the second detected temperature T2 are determined to be within the normal temperature range. The third detected temperature T3 is 18°C, which may be due to the user placing the ice cream next to the third temperature sensor. At this time, the third temperature sensor itself is not faulty and is working normally. It is just due to other reasons that the temperature value detected by it has a large deviation from the indoor ambient temperature. This is just an example. In actual applications, there are many reasons for the abnormal temperature detected by the temperature sensor, which will not be repeated here.

[0077] The controller is installed in the indoor unit and is connected to the remote controller for communication. The controller receives the remote controller's command to control the indoor unit to cool or heat, etc. The controller is connected to the first temperature sensor, the second temperature sensor, and the third temperature sensor to obtain the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3, and determines the indoor environment temperature Ts within a preset period according to the first detection temperature T1, the second detection temperature T2, and the third detection temperature T3, and uses the indoor environment temperature Ts as the reference temperature Tc for the operation of the indoor unit to control the operation of the indoor unit.

[0078] The controller is configured to: obtain a first detected temperature T1, a second detected temperature T2 and a third detected temperature T3; and preliminarily set the first detected temperature T1 to be within a normal temperature range. Since the first temperature sensor is a component carried by the air conditioner itself, the first temperature sensor is connected to the controller, and the position of the first temperature sensor usually does not change. Therefore, the first detected temperature T1 is preliminarily set to be within the normal temperature range, and there are 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 detected temperature T3 and the first detected temperature T1 is within the first deviation range H1, it is determined that the third detected temperature T3 is within the normal temperature range, and the current indoor ambient temperature Ts is determined to be the third detected temperature T3.

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

[0081] When 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 environment temperature Ts is determined to be the second detected temperature T2.

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

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

[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, the third detected temperature T3 is determined to be unknown, and the current indoor ambient temperature Ts is determined to be 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, on the premise that the second detected temperature T2 is within the normal temperature range, the third detected temperature T3 should be judged to be within the normal temperature range, but 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 judged to be within the normal temperature range, but should not be judged to be within the abnormal temperature range, so the third detected temperature T3 is finally judged to be unknown, and the first detected temperature T1±H1 is used 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 that the current indoor ambient temperature Ts is temperature Ty, wherein 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 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, but since the first detected temperature T1 has uncertainty, the second detected temperature T2 and the third detected temperature T3 cannot be determined with reference to the first detected temperature T1. 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 the air conditioner control system from fluctuating or even abnormally shutting down.

[0088] It should be noted that when the air conditioner is in heating mode, the preset temperature Ty is temperature Tr, and when the air conditioner is in cooling mode, the preset temperature Ty is temperature Td. Temperature Tr and temperature Td can be preset by a remote controller or by the air conditioner manufacturer. Temperature Tr and temperature Td are usually acceptable to ordinary users. The specific values ​​of temperature Tr and temperature Td can be the same or different. For example, temperature Tr and temperature Td are set to 25°C respectively; or, temperature Tr is set to 18°C ​​and temperature Td is set to 30°C.

[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 in different scenarios, the first deviation range H1 is not exactly the same.

[0091] In some embodiments, the first deviation range H1 is affected by the working mode of the air conditioner. 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.

[0092] The controller is configured to: when it is determined that the third detected temperature T3 is unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts to be the first detected temperature T1±H11; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts to be 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 to be a wall mounted unit, the first deviation range is H13; when the indoor unit is set to be a cabinet unit, the first deviation range is H14; wherein H13 and H14 satisfy the relationship: H13>H14.

[0094] The controller is configured as follows: when it is determined that the third detection temperature T3 is unknown, if the indoor unit is set to an on-hook mode, the current indoor ambient temperature Ts is determined to be the first detection temperature T1±H13; if the indoor unit is set to a cabinet mode, the current indoor ambient temperature Ts is determined to be the first detection temperature T1±H14.

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

[0096] The indoor unit is set as a cabinet unit. When the air conditioner is in heating mode, the first deviation range is H17, and 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 further configured to: when it is determined that the third detection temperature T13 is unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts to be the first detection temperature T1±H17; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts to be the first detection temperature T1±H18.

[0097] When the air conditioner is working, the first detection temperature T1, the second detection temperature T2 and the third detection temperature T3 are changing in real time, which also means that the indoor ambient temperature Ts is changing in real time. The indoor unit can be regarded as working in multiple consecutively set cycles. In the same cycle, the change value of the first detection temperature T1 is ΔT1, the change value of the second detection temperature T2 is ΔT2, the change value of the third detection 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 value ΔTs of the indoor ambient temperature Ts in the current cycle reaches the first set value t, the reference temperature of 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 in the current cycle, the indoor ambient temperature Ts changes too fast, which means that the difference between the indoor unit reference temperature in two adjacent cycles is large, which will reduce the working quality of the indoor unit. Therefore, when the current indoor ambient temperature Ts changes too fast, the difference between the reference temperature of the next cycle and the reference temperature of the current cycle is reduced to ensure the working quality of the indoor unit.

[0099] When the air conditioner is working, the duration of the preset cycle changes in real time, such as Figure 5As shown, when the change rate ΔV of the indoor ambient temperature within the preset period reaches the second set value v, the duration of the preset period is set to S1; when the change rate ΔV of the indoor ambient temperature 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 with the indoor ambient temperature Ts as the reference temperature Tc for operation. As the indoor unit operates, the indoor ambient temperature Ts changes in real time. Therefore, the reference temperature Tc for the operation of the indoor unit lags behind the indoor ambient temperature Ts. Due to the time difference between the indoor ambient temperature Ts and the reference temperature Tc, there is a deviation between the two. When the indoor ambient temperature changes too quickly, if the preset cycle is too long, the deviation between the reference temperature Tc for the operation of the indoor unit and the ambient temperature Ts of the indoor unit will be large. Therefore, when the indoor ambient temperature changes too quickly, the duration of the preset cycle is reduced to reduce the deviation between the reference temperature Tc for the operation of the indoor unit and the ambient temperature Ts of the indoor unit.

[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 lengths S1, S2 and t are different in different scenarios and will not be repeated here.

[0103] In this embodiment, the controller preliminarily sets the first detection temperature T1 to be within the normal temperature range. Through 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, and it can also ultimately be determined whether the first detection temperature T1 is within the normal temperature range.

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

[0105] The controller preliminarily sets the first detected temperature T1 to be within the normal temperature range, and when the difference between the third detected temperature T3 and the first detected temperature T1 is within the first deviation range, it is determined that the third detected temperature T3 is within the normal temperature range.

[0106] The controller preliminarily sets the first detection temperature T1 to be 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 preliminarily sets the first detected temperature T1 within the normal temperature range. 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. It should be noted that the first detected temperature T1 is determined to be unknown, which may be caused by a failure of the first temperature sensor or other reasons, which will not be elaborated here.

[0108] It should be noted that, in practical applications, since the first temperature sensor is configured with the indoor unit and is a component of the indoor unit, the indoor unit usually has a function of determining whether the first temperature sensor is faulty. When the first temperature sensor is faulty, the air conditioner uses a preset temperature Tr as a reference temperature Tc in the heating mode and a preset temperature Td as a reference temperature Tc in the cooling mode. The indoor unit determines whether the first temperature sensor is faulty, which belongs to the prior art in the art and will not be described in detail here.

[0109] The working principle of the above air conditioner is: 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 in the heating mode and the preset temperature Td as the reference temperature Tc in the cooling mode.

[0110] If the first temperature sensor works normally, it is preliminarily determined that the first detected temperature T1 is within the normal temperature range, and the first detected temperature T1 is used as a reference to determine whether the third detected temperature T3 and the second detected temperature T2 are within the normal temperature range.

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

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

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

[0114] If the difference between the third detected temperature T3 and the second detected temperature T2 exceeds the third deviation range H3, the third detected temperature T3 is determined to be within the abnormal temperature range, and then it is determined whether the second detected 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, the second detected temperature T2 is determined to be within the normal temperature range, the current indoor ambient temperature Ts is determined to be the second detected temperature T2, and 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 detected temperature T2 and the first detected temperature T1 exceeds the second deviation range H2, it is determined whether the difference between the second detected temperature T2 and the third detected temperature T3 is within the third deviation range H3.

[0117] If the difference between the second detected temperature T2 and the third detected temperature T3 exceeds the third deviation range H3, the second detected temperature T2 is determined to be within the abnormal temperature range, and the current indoor ambient temperature Ts is determined to be the first detected temperature T1, so that the first detected temperature T1 is used 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, the first detected temperature T1 is determined to be unknown, and the air conditioner uses the preset temperature Tr as the reference temperature Tc in the heating mode and the preset temperature Td as the reference temperature Tc in the cooling mode.

[0119] The air conditioner works in multiple continuous cycles, and the set duration of each cycle is not exactly the same and changes in real time. When the change rate ΔV of the indoor ambient temperature in the first cycle reaches the second set value v, the duration of the first cycle is set to S1. When the change rate ΔV of the indoor ambient temperature 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 value ΔTs of the indoor environment temperature Ts in the first cycle reaches the first set value t, the reference temperature of 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 in addition to the air conditioner, the third temperature sensor is configured as at least one, and the third temperature sensor can be connected to the controller for communication, and the controller can obtain the temperature value T3, which belongs to the prior art and will not be repeated here. It should also be noted that this application is introduced by taking one third temperature sensor as an example. In actual 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, which will not be repeated here.

[0122] The following describes in detail the method for obtaining the reference temperature Tc when the indoor unit of the air conditioner is running, in combination with specific values. The indoor unit is set to work in N consecutive cycles; in the current cycle, the controller is configured to: preliminarily set the first detection temperature T1 within the normal temperature range.

[0123] Embodiment 1: The air-conditioning indoor unit is a hanging unit, and the air-conditioning indoor unit is in heating mode.

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

[0125] Since the third detected temperature T3 is within the normal temperature range, the third detected temperature T3 is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the third detected temperature T3 in two adjacent cycles is ΔT3 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then in the two adjacent cycles, the reference temperature Tc' of the later cycle is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle 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, and uses the first detection temperature T1±4℃ as the indoor ambient temperature Ts in the current cycle, and uses 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 detected temperature T1±4°C is still used as the indoor ambient temperature Ts′ in the next cycle, but the change value of the first detected temperature T1 in two adjacent cycles is ΔT1≥0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs≥0.5°C, then the reference temperature Tc′ of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV≥2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV<2°C / min, the duration of the preset cycle is set to 1min.

[0128] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>4°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>3°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤3°C, 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, and 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.

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

[0130] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>4°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>3°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>3°C, 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, and uses the first detection temperature T1 as the indoor ambient temperature Ts in the current cycle, and uses the first detection temperature T1±4°C 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 value of the first detected temperature T1 in two adjacent cycles is ΔT1 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then the reference temperature Tc' of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

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

[0133] Since the preset temperature Tr is still used as the indoor environment temperature Ts' in the next cycle, but the change value of the temperature Tr in two adjacent cycles is ΔTr≥0.5℃, that is, the change value of the indoor environment temperature Ts in 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 change rate of the indoor environment 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] Embodiment 2: The air conditioner indoor unit is a wall mounted unit and is in cooling mode. Embodiment 2 differs from Embodiment 1 in that in Embodiment 2, the air conditioner indoor unit is in cooling mode, while in Embodiment 1, the air conditioner indoor unit is in heating mode.

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

[0136] Since the third detected temperature T3 is within the normal temperature range, the third detected temperature T3 is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the third detected temperature T3 in two adjacent cycles is ΔT3 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then in the two adjacent cycles, the reference temperature Tc' of the later cycle is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

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

[0138] Since the first detected temperature T1±3℃ is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the first detected temperature T1 in two adjacent cycles is ΔT1≥0.5℃, that is, the change value of the indoor ambient temperature Ts in 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 change rate of the 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.

[0139] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤2°C, 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, and 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 detected temperature T2 is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the second detected temperature T2 in two adjacent cycles is ΔT2 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then the reference temperature Tc' of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

[0141] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>2°C, 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, and uses the first detection temperature T1 as the indoor ambient temperature Ts in the current cycle, and uses the first detection temperature T1±3°C 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 value of the first detected temperature T1 in two adjacent cycles is ΔT1 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then the reference temperature Tc' of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

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

[0144] Since the preset temperature Td is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of temperature Td in two adjacent cycles is ΔTd≥0.5℃, that is, the change value of indoor ambient temperature Ts in 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 change rate 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] Embodiment 3: The air conditioner indoor unit is a cabinet unit, and the air conditioner indoor unit is in heating mode. Embodiment 3 is different from Embodiment 1 in that in Embodiment 3, the air conditioner indoor unit is a cabinet unit, while in Embodiment 1, the air conditioner indoor unit is a wall mounted unit.

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

[0147] Since the third detected temperature T3 is within the normal temperature range, the third detected temperature T3 is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the third detected temperature T3 in two adjacent cycles is ΔT3 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then in the two adjacent cycles, the reference temperature Tc' of the later cycle is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

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

[0149] Since the first detected temperature T1±3℃ is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the first detected temperature T1 in two adjacent cycles is ΔT1≥0.5℃, that is, the change value of the indoor ambient temperature Ts in 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 change rate of the 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.

[0150] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤2°C, 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, and 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.

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

[0152] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>3°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>2°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>2°C, 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, and uses the first detection temperature T1 as the indoor ambient temperature Ts in the current cycle, and uses the first detection temperature T1±3°C 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 value of the first detected temperature T1 in two adjacent cycles is ΔT1 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then the reference temperature Tc' of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

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

[0155] Since the preset temperature Tr is still used as the indoor environment temperature Ts' in the next cycle, but the change value of the temperature Tr in two adjacent cycles is ΔTr≥0.5℃, that is, the change value of the indoor environment temperature Ts in 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 change rate of the indoor environment 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] Embodiment 4: The air conditioner indoor unit is a cabinet unit and is in cooling mode. Embodiment 4 is different from Embodiment 1 in that in Embodiment 4, the air conditioner indoor unit is a cabinet unit and is in cooling mode, while in Embodiment 1, the air conditioner indoor unit is a wall mounted unit and is in heating mode.

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

[0158] Since the third detected temperature T3 is within the normal temperature range, the third detected temperature T3 is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the third detected temperature T3 in two adjacent cycles is ΔT3 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then in the two adjacent cycles, the reference temperature Tc' of the later cycle is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

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

[0160] Since the first detected temperature T1±2℃ is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of the first detected temperature T1 in two adjacent cycles is ΔT1≥0.5℃, that is, the change value of the indoor ambient temperature Ts in 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 change rate of the 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.

[0161] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>2°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>1°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|≤1°C, 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, and 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.

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

[0163] When the first detection temperature T1 and the third detection temperature T3 satisfy the relationship: |T1-T3|>2°C, the second detection temperature T2 and the third detection temperature T3 satisfy the relationship: |T2-T3|>1°C, and the first detection temperature T1 and the second detection temperature T2 satisfy the relationship: |T1-T2|>1°C, 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, and uses the first detection temperature T1 as the indoor ambient temperature Ts in the current cycle, and uses the first detection temperature T1±2°C 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 value of the first detected temperature T1 in two adjacent cycles is ΔT1 ≥ 0.5°C, that is, the change value of the indoor ambient temperature Ts in two adjacent cycles is ΔTs ≥ 0.5°C, then the reference temperature Tc' of the later cycle in the two adjacent cycles is the reference temperature Tc+0.5°C of the current cycle. It should be noted that if the change rate of the indoor ambient temperature Ts in the current cycle is ΔV ≥ 2°C / min, the duration of the preset cycle is set to 0.5min; if ΔV < 2°C / min, the duration of the preset cycle is set to 1min.

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

[0166] Since the preset temperature Td is still used as the indoor ambient temperature Ts' in the next cycle, but the change value of temperature Td in two adjacent cycles is ΔTd≥0.5℃, that is, the change value of indoor ambient temperature Ts in 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 change rate 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 actual applications, there are multiple temperature sampling sources for collecting indoor temperature. Based on the above-mentioned method for obtaining the reference temperature Tc when the air conditioner indoor unit is running, a reasonable temperature value strategy can be formulated for different application scenarios, which will not be repeated here.

[0168] The above air conditioner collects the ambient temperature of different indoor areas through multiple temperature sampling sources. The controller sets the sampling priority for the indoor ambient temperature Ts and formulates corresponding selection strategies according to the application scenarios to reasonably determine the indoor ambient temperature Ts; and the reasonably determined indoor ambient temperature Ts is used as the reference temperature Tc when the indoor unit is running to improve the working efficiency and quality of the indoor unit. In addition, considering the switching between different scenarios, a corresponding switching strategy is formulated to prevent the indoor ambient temperature Ts from jumping, to avoid the indoor ambient temperature Ts jumping and causing the reference temperature Tc to jump, which causes the air conditioning control system to fluctuate, or even shut down within an abnormal temperature range.

[0169] The air conditioner has high sampling accuracy for indoor ambient temperature and is not prone to sudden changes. The air conditioner has high operating 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 the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0171] For ease of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

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

2. The air conditioner according to claim 1, characterized in that: 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 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 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 that the current indoor ambient temperature Ts is 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, and when the air conditioner is in cooling mode, the first deviation range is H12, wherein H1 and H2 satisfy the relationship: H11>H12; The controller is also configured to: when it is determined that the third detected temperature T3 is unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts to be the first detected temperature T1±H11; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts to be the first detected temperature T1±H12.

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

6. The air conditioner according to claim 2, characterized in that: When the indoor unit is set to be on-hook, 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 it is determined that the third detected temperature T13 is unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts to be the first detected temperature T1±H15; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts to be the first detected temperature T1±H16.

7. The air conditioner according to claim 6, characterized in that: When the indoor unit is set as a cabinet unit, when the air conditioner is in heating mode, the first deviation range is H17, and 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 it is determined that the third detected temperature T13 is unknown, if the air conditioner is in heating mode, determine the current indoor ambient temperature Ts to be the first detected temperature T1±H17; if the air conditioner is in cooling mode, determine the current indoor ambient temperature Ts to be the first detected 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 of 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 also configured as follows: when the change rate ΔV of the indoor ambient temperature within a preset period reaches a second set value v, the duration of the preset period is set to S1; when the change rate ΔV of the indoor ambient temperature 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.

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

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