Air conditioner liquid level monitoring method and device, air conditioner liquid level control method and device

Abstract

The application provides an air conditioner liquid level monitoring method and device, and an air conditioner liquid level control method and device. The monitoring method comprises the following steps: determining that the air conditioner is currently in a dehumidification or refrigeration mode; acquiring a first temperature value collected by a first temperature sensor and a second temperature value collected by a second temperature sensor; and determining that the condensate water level in a water pan reaches a predetermined height when it is determined that the first temperature value, the second temperature value and a preset temperature deviation value meet a first preset condition. The application uses the first temperature sensor and the second temperature sensor to replace the liquid level sensor to measure the liquid level. Since the temperature sensor is cheaper than the liquid level sensor, the application helps to save costs.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an air conditioning liquid level monitoring method, an air conditioning liquid level monitoring device, an air conditioning liquid level control method, an air conditioning liquid level control device, an electronic device, a non-transitory computer-readable storage medium, and a computer program product. Background Technology

[0002] The condensate in an air conditioner's indoor unit is formed by the condensation of water vapor in the air onto the surface of the evaporator. When the air conditioner is running, the evaporator in the indoor unit absorbs heat from the indoor air through the evaporation of refrigerant, thereby lowering the indoor temperature. During this process, water vapor in the air is cooled and condenses on the surface of the evaporator, forming condensate.

[0003] In existing technology, condensate is collected in a drip tray. As the condensate accumulates, there is a risk of overflowing from the drip tray, which can damage the air conditioner. Currently, a level sensor is typically used to monitor the condensate level in the drip tray; however, level sensors are expensive, which is not conducive to cost savings. Summary of the Invention

[0004] In view of this, this application provides a solution to the problem that the high cost of liquid level sensors is not conducive to cost savings.

[0005] The technical solution adopted in this application to solve the above-mentioned technical problems is as follows: In a first aspect, this application provides an air conditioning liquid level monitoring method, applied to an air conditioner, the air conditioner including an indoor unit, the indoor unit including a housing, an evaporator, a drip tray, and a controller, the housing having an air outlet; the evaporator disposed inside the housing; the drip tray disposed below the evaporator and near the air outlet; a first temperature sensor disposed on the inner wall of the drip tray; a second temperature sensor disposed on the air outlet; the controller being signal-connected to the first temperature sensor and the second temperature sensor, the monitoring method including: Determine whether the air conditioner is currently in dehumidification or cooling mode; Acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor; When the first temperature value, the second temperature value, and the preset temperature deviation value meet the first preset condition, the condensate level in the water receiving tray is determined to reach a predetermined height. The first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

[0006] In some embodiments of this application, the monitoring method further includes: When it is determined that the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, it is determined that the condensate level in the water receiving tray has not reached the predetermined height.

[0007] In some embodiments of this application, a third temperature sensor is disposed on the outer wall of the evaporator, and the method further includes: When it is determined that the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, it is determined that the condensate level in the drip tray has not reached the predetermined height. Reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor; When the first temperature value, the second temperature value, and the third temperature value are determined to meet the second preset condition, the condensate level in the water receiving pan is determined to reach a predetermined height. The second preset condition includes the third temperature value being less than the second temperature value, and the second temperature value being less than the first temperature value.

[0008] In some embodiments of this application, after the step of reacquiring the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor, the method further includes: When the first temperature value, the second temperature value, the third temperature value, and the preset temperature deviation value meet the third preset condition, the condensate level in the water receiving tray is determined to have reached the predetermined height. The third preset condition includes that the difference between the third temperature value and the preset temperature deviation value is less than the first temperature value, and the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

[0009] In some embodiments of this application, the monitoring method further includes: When it is determined that the re-acquired first temperature value, second temperature value and third temperature value do not meet the second preset condition and the third preset condition, it is determined that the condensate level in the water receiving pan has not reached the predetermined height. The first temperature value, the second temperature value, and the third temperature value are obtained again. When it is determined that the first temperature value, the second temperature value, the third temperature value and the preset temperature deviation value obtained again meet the fourth preset condition, it is determined that the condensate level in the water receiving pan has not reached the predetermined height. The fourth preset condition includes the following: the sum of the third temperature value and the preset temperature deviation value is less than the first temperature value; the first temperature value is less than or equal to the difference between the second temperature value and the preset temperature deviation value; and the first temperature value is greater than or equal to the difference between the second temperature value and the preset temperature deviation value.

[0010] In some embodiments of this application, the air conditioner further includes an alarm, and the monitoring method further includes: If it is determined that re-acquiring the first temperature value, the second temperature value, and the third temperature value does not meet the fourth preset condition, it is determined that at least one of the first temperature sensor, the second temperature sensor, and the third temperature sensor has malfunctioned.

[0011] Secondly, this application provides an air conditioning liquid level control method, applied to an air conditioner, wherein the air conditioner includes an indoor unit, the indoor unit includes a housing, an evaporator, a drip tray, and a controller, the housing has an air outlet; the evaporator is disposed inside the housing; the drip tray is disposed below the evaporator and near the air outlet; a first temperature sensor is disposed on the inner wall of the drip tray; a second temperature sensor is disposed on the air outlet; the controller is signal-connected to the first temperature sensor and the second temperature sensor, and the control method includes: Determine whether the air conditioner is currently in dehumidification or cooling mode; Acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor; When the first temperature value, the second temperature value, and the preset temperature deviation value meet the first preset condition, the condensate level in the water receiving pan is determined to have reached a predetermined height, and the drain pump is started to drain the water. The first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

[0012] Thirdly, this application provides an air conditioning liquid level monitoring device for use in an air conditioner. The air conditioner includes an indoor unit, which includes a housing, an evaporator, a drip tray, and a controller. The housing has an air outlet. The evaporator is disposed inside the housing. The drip tray is disposed below the evaporator and near the air outlet. A first temperature sensor is disposed on the inner wall of the drip tray. A second temperature sensor is disposed at the air outlet. The controller is signal-connected to the first temperature sensor and the second temperature sensor. The monitoring device includes: The first determining module is used to determine whether the air conditioner is currently in dehumidification or cooling mode; The first acquisition module is used to acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor. The first judgment module is used to determine that the condensate level in the water receiving pan has reached a predetermined height when the first temperature value, the second temperature value, and the preset temperature deviation value meet the first preset condition. The first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

[0013] Fourthly, this application provides an air conditioning liquid level control device, applied to an air conditioner, the air conditioner including an indoor unit, the indoor unit including a housing, an evaporator, a drip tray and a controller, the housing having an air outlet; the evaporator disposed inside the housing; the drip tray disposed below the evaporator and near the air outlet; a first temperature sensor disposed on the inner wall of the drip tray; a second temperature sensor disposed on the air outlet; the controller being signal-connected to the first temperature sensor and the second temperature sensor, the control device comprising: The second determining module is used to determine whether the air conditioner is currently in dehumidification or cooling mode. The second acquisition module is used to acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor. The second judgment module is used to determine that the condensate level in the water receiving pan has reached a predetermined height when the first temperature value, the second temperature value, and the preset temperature deviation value meet the first preset condition, and to control the start of the drain pump to drain the water. The first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

[0014] Fifthly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described air conditioning liquid level monitoring method.

[0015] Sixthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described air conditioning liquid level monitoring method.

[0016] Sixthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the air conditioning liquid level monitoring method described above.

[0017] In summary, due to the adoption of the above technical solution, this application includes at least the following beneficial effects: This application uses a first temperature sensor and a second temperature sensor to replace the liquid level sensor to measure the liquid level. Since the temperature sensor is cheaper than the liquid level sensor, it helps to save costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application and are not intended to limit this application, wherein: Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit provided in an embodiment of this application; Figure 2 This is a schematic diagram of the first process of the air conditioner monitoring method provided in the embodiments of this application; Figure 3 This is a schematic diagram of the dehumidification mode flow of the air conditioning monitoring method provided in the embodiments of this application; Figure 4 A schematic diagram of the cooling mode flow of the air conditioning monitoring method provided in the embodiments of this application; Figure 5 This is a schematic diagram of the second process of the air conditioner monitoring method provided in the embodiments of this application; Figure 6 This is a schematic diagram of the third process of the air conditioner monitoring method provided in the embodiments of this application; Figure 7 This is a schematic diagram of the physical structure of an electronic device provided in an embodiment of this application.

[0019] In the picture: 10-Housing, 20-Evaporator, 30-Drain tray, 40-First temperature sensor, 50-Drain pump, 60-Second temperature sensor, 70-Third temperature sensor, 80-Air inlet, 90-Air outlet, 100-Motor. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles disclosed in this application.

[0023] Please see Figure 1 This application provides an air conditioner, which includes: a housing 10, an evaporator 20, a water tray 30, a first temperature sensor 40, a second temperature sensor 60, and a controller.

[0024] In some embodiments, the air conditioner also includes a drain pump 50. The drain pump 50 is disposed in the drip tray 30 and is used to drain the water accumulated in the drip tray 30.

[0025] In some embodiments, the housing 10 has an air outlet 80. An evaporator 20 is disposed inside the housing 10. A drip tray 30 is disposed below the evaporator 20 and near the air outlet 80. A first temperature sensor 40 is disposed on the inner wall of the drip tray 30. A second temperature sensor 60 is disposed at the air outlet 80.

[0026] In some embodiments, the air conditioner further includes an outdoor unit, which includes a compressor.

[0027] The controller is connected to the first temperature sensor 40, the drain pump 50, the second temperature sensor 60, the drain pump 50, and the compressor.

[0028] In some embodiments, please refer to Figure 1 The indoor unit of the air conditioner is a ceiling-mounted unit. Figure 1 This is merely an illustrative description of the indoor unit of an air conditioner. In other embodiments, the indoor unit may also be a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, a ducted air conditioner, etc.

[0029] In some embodiments, please refer to Figure 1 The air conditioner also includes a third temperature sensor 70, which is disposed on the outer wall of the evaporator 20. The controller is also connected to the third temperature sensor 70 via a signal connection.

[0030] In some embodiments, please refer to Figure 1 The indoor unit of the air conditioner also includes a return air vent 90, which, along with the supply air vent 80, is arranged along the length of the housing 10, and the return air vent 90 and the supply air vent 80 are located on the same side of the housing 10. Of course, Figure 1 This is merely an illustrative description of the return air vent 90 and the supply air vent 80. In other embodiments, the return air vent 90 and the supply air vent 80 are arranged along the width direction of the housing 10, and the return air vent 90 and the supply air vent 80 are located on the same side of the housing 10.

[0031] In some embodiments, the indoor unit of the air conditioner also includes an alarm, which is signal-connected to the controller.

[0032] In some embodiments, the alarm may be a horn, buzzer, signal light, display screen, etc., and the corresponding alarm signal may be a voice signal, light signal, text signal, etc.

[0033] In some embodiments, the indoor unit of the air conditioner also includes a motor 100 for controlling the rotation of the fan in the indoor unit, thereby realizing functions such as air delivery, adjusting wind speed and wind direction.

[0034] This application provides a method for monitoring the liquid level in an air conditioner. This method can be applied to the air conditioner described in the foregoing embodiments.

[0035] In some embodiments, please refer to Figure 2 The monitoring method includes: S101. Determine whether the air conditioner is currently in dehumidification or cooling mode; S102: Obtain the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor; S103. When it is determined that the first temperature value, the second temperature value and the preset temperature deviation value meet the first preset condition, it is determined that the condensate level in the water receiving tray has reached the predetermined height.

[0036] In step S101 of some embodiments, please refer to Figure 3 Determining that the air conditioner is currently in dehumidification mode includes: S101a. Obtain the operating parameters of the air conditioner; S101b. When determining the air conditioner operating parameters corresponding to the dehumidification mode in the preset correspondence table of the obtained operating parameters, it is determined that the air conditioner is currently in the dehumidification mode. The correspondence table includes the correspondence between different operating parameters of the air conditioner and different operating modes.

[0037] In step S101 of some embodiments, please refer to Figure 4 Determining whether the air conditioner is currently in cooling mode includes: S101c, Obtain the operating parameters of the air conditioner; S101d. When determining the air conditioner operating parameters corresponding to the cooling mode in the preset correspondence table of the obtained operating parameters, it is determined that the air conditioner is currently in the cooling mode. The correspondence table includes the correspondence between different operating parameters of the air conditioner and different operating modes.

[0038] In step S103 of some embodiments, when the first temperature value, the second temperature value and the preset temperature deviation value meet the first preset condition, the condensate level in the water receiving pan reaches a predetermined height, and the drain pump is started to drain the water.

[0039] The first preset condition includes a first temperature value being less than the difference between a second temperature value and a preset temperature deviation value.

[0040] In other words, the first temperature value T 1a Second temperature value T 2a and preset temperature deviation value T σ Satisfying T 1a <T 2a -T σ (That is, the first precondition).

[0041] It is understandable that when the air conditioner is in cooling or dehumidifying mode, the initial state of the drip tray may be in the first state. This first state is characterized by the presence of cold water and the liquid level reaching the location of the first temperature sensor. Water droplets only form when the temperature of the air conditioner's inner coil reaches the dew point temperature of the air. Therefore, the temperature of these water droplets is the same as the temperature of the inner coil. However, as the water droplets leave the evaporator coil, they are affected by the supply air temperature, causing the water droplet temperature to rise. This results in the water droplets reaching a temperature higher than the dew point temperature when they fall into the drip tray. Simultaneously, the water droplet temperature in the drip tray will not exceed the supply air temperature. Therefore, if the first preset condition is met based on the obtained first temperature value, second temperature value, and preset temperature deviation value, it can be determined that the condensate level in the drip tray has reached the predetermined height (i.e., it is at full level).

[0042] It is understandable that the preset temperature deviation value can be set based on prior knowledge. The preset temperature deviation value can be 1~3℃.

[0043] Compared to existing technologies, using a first temperature sensor and a second temperature sensor to measure liquid level instead of a liquid level sensor helps to save costs because the temperature sensor is cheaper than the liquid level sensor.

[0044] Furthermore, liquid level sensors are typically installed vertically to ensure accurate monitoring of liquid levels. This is because in a vertical position, the sensor probe makes better contact with the liquid, resulting in more accurate level readings. However, temperature sensors do not have specific installation requirements and can be placed tilted or horizontally. This is because temperature sensors primarily function by sensing the temperature of the surrounding environment, unlike liquid level sensors which have direct contact with the object being measured.

[0045] In some embodiments, the monitoring method further includes: when it is determined that the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, the condensate level in the water receiving pan does not reach the predetermined height.

[0046] It is understandable that, based on prior knowledge, when the cooling or dehumidification mode is activated, even if the first preset condition is not met and the water level in the drip tray does not reach the predetermined height, the air conditioner can still continue to operate in cooling or dehumidification mode.

[0047] Please see Figure 5 In some embodiments, the monitoring method further includes: S201. When the first temperature value, the second temperature value and the preset temperature deviation value do not meet the first preset condition, the condensate level in the water receiving pan does not reach the preset height. S202, Reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor; S203. When the first temperature value, the second temperature value, and the third temperature value meet the second preset condition, the condensate level in the water receiving pan reaches the predetermined height.

[0048] In step S203 of some embodiments, the second preset condition includes a third temperature value being less than a second temperature value, and the second temperature value being less than a first temperature value.

[0049] In other words, the first temperature value T 1b Second temperature value T 2b and the third temperature value T 3a Satisfying T 3a <T 2b <T 1b (That is, the second preset condition).

[0050] Understandably, based on prior knowledge, when cooling or dehumidification mode is activated, the initial state of the drip tray might be in the second state. This second state involves room-temperature water with the liquid level reaching the location of the first temperature sensor. At this point, as the liquid refrigerant transforms into a gaseous state, heat is carried outdoors, causing the evaporator temperature to decrease. At this time, the evaporator's inner wall temperature is lower than the supply air temperature. Simultaneously, water droplets only form when the temperature of the air conditioner's inner panel reaches the dew point temperature. Therefore, the temperature of these water droplets is the same as the inner panel temperature; however, due to the presence of room-temperature water in the drip tray, the water's specific heat capacity is higher than that of air, resulting in a slower cooling rate than the supply air temperature. Therefore, after continuous operation for a preset time, the temperature of the drip tray will be higher than the supply air temperature.

[0051] Furthermore, based on prior knowledge, when cooling or dehumidification mode is activated, the initial state of the drip tray may be in the third state. This third state is characterized by room temperature water present but the liquid level not reaching the location of the first temperature sensor. As the liquid refrigerant transforms into a gaseous state, heat is carried outdoors by the gaseous refrigerant, thus lowering the evaporator temperature. At this time, the inner wall temperature of the evaporator is lower than the supply air temperature. Simultaneously, the existing water in the drip tray and newly added water droplets are affected by the supply air temperature and the indoor ambient temperature. Since the existing water in the drip tray is dominant, the temperature of the drip tray will be higher than the supply air temperature. Therefore, if the monitoring meets the second preset condition, it can be determined that the condensate level in the drip tray has reached the predetermined height (i.e., it is at full water level).

[0052] In some embodiments, the monitoring method further includes, after the step of reacquiring the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor, the method further includes, when it is determined that the first temperature value, the second temperature value, the third temperature value, and the preset temperature deviation value meet a third preset condition, the condensate level in the water receiving pan reaches a predetermined height.

[0053] The third preset condition includes that the difference between the third temperature value and the preset temperature deviation value is less than the first temperature value, and the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

[0054] In other words, the first temperature value T 1b Second temperature value T 2b and the third temperature value T 3a Satisfying T 3a -T σ <T 1b <T 2b -T σ (That is, the third presupposition condition).

[0055] Understandably, based on prior knowledge, when cooling or dehumidification mode is activated, the initial state of the drip tray might be in the fourth state. This fourth state is characterized by the presence of cold water but the water level not reaching the location of the first temperature sensor. Because the water level in the drip tray is below the first temperature sensor's location, the temperature at the air outlet is relatively close to the temperature of the drip tray. However, condensate drips into the drip tray through the inner plate, therefore the temperature of the drip tray is lower than the temperature at the air outlet. Simultaneously, the temperature of the evaporator is lower than the temperature of the drip tray. Therefore, after continuous operation for a preset period, if the third preset condition is met, it can be determined that the condensate level in the drip tray has reached the predetermined height (i.e., it is at full level).

[0056] Furthermore, based on prior knowledge, when cooling or dehumidification mode is activated, the initial state of the drip tray may be in the third state. This third state is characterized by room temperature water but the liquid level not reaching the location of the first temperature sensor. In this state, during evaporator operation, the liquid refrigerant transforms into gaseous refrigerant, a process that carries away heat, thus lowering the evaporator temperature. At this time, the existing water in the drip tray and newly added water droplets are affected by the air vent temperature and the ambient indoor temperature. Since the newly added water droplets dominate, the temperature of the drip tray is lower than the air vent temperature, and the evaporator temperature is lower than the drip tray temperature. Therefore, if the third preset condition is met, it can be determined that the condensate level in the drip tray has reached the predetermined height (i.e., it is at full level).

[0057] Furthermore, based on prior knowledge, when cooling or dehumidification mode is activated, the initial state of the drip tray may be in state five. This fifth state is the state before state four, indicating the presence or absence of water. Subsequently, because the water level in the drip tray has not reached the location of the first temperature sensor, the temperature of the air outlet is relatively close to the temperature of the drip tray. However, condensate falls into the drip tray through the inner plate, so the temperature of the drip tray is lower than the temperature of the air outlet. At the same time, the temperature of the evaporator is lower than the temperature of the drip tray. Therefore, if the third preset condition is met, it can be determined that the condensate level in the drip tray has reached the predetermined height (that is, it is at full level).

[0058] Please see Figure 6 In some embodiments, the monitoring method further includes: S301. When it is determined that the first temperature value, the second temperature value and the third temperature value that are re-acquired do not meet the second preset condition or the third preset condition, the condensate level in the water receiving pan does not reach the predetermined height. S302, Obtain the first temperature value, the second temperature value, and the third temperature value again; S303. When it is determined that the first temperature value, the second temperature value, the third temperature value and the preset temperature deviation value obtained again meet the fourth preset condition, the condensate level in the water receiving pan does not reach the preset height.

[0059] In other words, the first temperature value T 1d Second temperature value T 2d and the third temperature value T 3a Satisfy T 3b +T σ <T 1d And T 2d -T σ ≤T 1d ≤T 2d +T σ Time (i.e., the fourth precondition).

[0060] In steps S301 and S302 of some embodiments, since the second preset condition and the third preset condition are not met, it is determined that the condensate level in the water receiving pan has not reached the predetermined height. Therefore, it is necessary to remeasure the first temperature value, the second temperature value, and the third temperature value.

[0061] In step S303 of some embodiments, since the fourth preset condition is met, it can be proven that the first temperature sensor, the second temperature sensor and the third temperature sensor are working normally, and the water receiving tray has not reached the predetermined height.

[0062] In some embodiments, the monitoring method further includes: when it is determined that reacquiring the first temperature value, the second temperature value, and the third temperature value does not meet the fourth preset condition, at least one of the first temperature sensor, the second temperature sensor, and the third temperature sensor malfunctions.

[0063] Specifically, if the water level cannot be detected as full even when using the first, second, third, and fourth preset conditions, it can be determined that at least one of the first, second, and third temperature sensors has malfunctioned.

[0064] Based on the same concept, this application provides an air conditioning liquid level control method, applied to an air conditioner. The air conditioner includes an indoor unit, which includes a housing, an evaporator, a drip tray, and a controller. The housing has an air outlet. The evaporator is disposed inside the housing. The drip tray is disposed below the evaporator and near the air outlet. A first temperature sensor is disposed on the inner wall of the drip tray. A second temperature sensor is disposed at the air outlet. The controller is signal-connected to the first and second temperature sensors. The control method includes: determining whether the air conditioner is currently in dehumidification or cooling mode; acquiring a first temperature value collected by the first temperature sensor and a second temperature value collected by the second temperature sensor; and when the first temperature value, the second temperature value, and a preset temperature deviation value meet a first preset condition, determining that the condensate level in the drip tray has reached a predetermined height, and controlling the start of the drain pump to drain the condensate.

[0065] In some embodiments, when the condensate level in the drip tray reaches a predetermined height, the drain pump is activated to drain the condensate, which can effectively prevent malfunctions caused by overfilling and ensure the normal operation of the air conditioner.

[0066] In some embodiments, the control method further includes: when it is determined that the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, and the condensate level in the water receiving pan has not reached a predetermined height, controlling the compressor to start and the drain pump to drain the water.

[0067] In some embodiments, even if the water level in the drip tray does not reach the predetermined height, the air conditioner can still continue to operate in cooling or dehumidifying mode. In this case, by starting the compressor and drain pump, the air conditioner can maintain normal operation and ensure good dehumidification or cooling effects.

[0068] In some embodiments, the control method further includes: when it is determined that the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, the condensate level in the drip tray has not reached a predetermined height, controlling the start of the compressor and the start of the drain pump to drain for a preset time; re-acquiring the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor; when it is determined that the first temperature value, the second temperature value, and the third temperature value meet the second preset condition, the condensate level in the drip tray reaches a predetermined height, controlling the shutdown of the compressor, and maintaining the original operating state of the drain pump; wherein, the second preset condition includes the third temperature value being less than the second temperature value, and the second temperature value being less than the first temperature value.

[0069] In some embodiments, the compressor and drain pump are started and drained for a preset time. Here, the preset time can be 5 to 10 seconds. For example, the preset time is 6 seconds, 8 seconds, or 9 seconds.

[0070] In some embodiments, after a preset time, the drip tray may reach a preset height due to condensation. To avoid this, the temperature value needs to be remeasured. This ensures the air conditioner operates normally while preventing the drip tray from overflowing due to overfilling.

[0071] In some embodiments, when the condensate level in the drip tray reaches a predetermined height, the compressor is shut down while the drain pump continues its original operation. This effectively prevents malfunctions caused by overfilling and ensures the normal operation of the air conditioner. In some embodiments, the control method further includes, after the step of reacquiring the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor, the method further includes: when it is determined that the first temperature value, the second temperature value, the third temperature value, and the preset temperature deviation value meet a third preset condition, the condensate level in the drip tray reaches a predetermined height, the compressor is shut down, and the drain pump continues its original operation; wherein the third preset condition includes that the difference between the third temperature value and the preset temperature deviation value is less than the first temperature value, and the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

[0072] In some embodiments, when the condensate level in the drip tray reaches a predetermined height, the compressor is shut down while the original operating state of the drain pump is maintained. This can effectively prevent malfunctions caused by overfilling the water tray and ensure the normal operation of the air conditioner.

[0073] In some embodiments, the control method further includes: when it is determined that the reacquired first temperature value, second temperature value, and third temperature value do not meet the second preset condition or the third preset condition, the condensate level in the drip tray has not reached a predetermined height, and the original operating state of the compressor and the drain pump is maintained for a preset duration; the first temperature value, second temperature value, and third temperature value are acquired again; when it is determined that the reacquired first temperature value, second temperature value, third temperature value, and preset temperature deviation value meet a fourth preset condition, the condensate level in the drip tray has not reached a predetermined height, and the original operating state of the compressor and the drain pump is maintained; wherein, the fourth preset condition includes that the sum of the third temperature value and the preset temperature deviation value is less than the first temperature value, the first temperature value is less than or equal to the difference between the second temperature value and the preset temperature deviation value, and the first temperature value is greater than or equal to the difference between the second temperature value and the preset temperature deviation value.

[0074] In some embodiments, the compressor and drain pump maintain their original operating state when the condensate level in the drip tray does not reach a predetermined height.

[0075] In some embodiments, the control method further includes: when it is determined that reacquiring the first temperature value, the second temperature value, and the third temperature value does not meet the fourth preset condition, at least one of the first temperature sensor, the second temperature sensor, and the third temperature sensor malfunctions, and the alarm is controlled to output a corresponding alarm signal.

[0076] It should be noted that the air conditioner also includes an alarm, which is connected to the controller via a signal connection. The alarm can be a horn, buzzer, indicator light, display screen, etc., and the corresponding alarm signal can be a voice signal, a light signal, a text signal, etc.

[0077] This invention provides an air conditioner liquid level monitoring device for use in an air conditioner. The air conditioner includes an indoor unit, which comprises a housing, an evaporator, a drip tray, and a controller. The housing has an air outlet. The evaporator is disposed inside the housing. The drip tray is disposed below the evaporator and near the air outlet. A first temperature sensor is disposed on the inner wall of the drip tray. A second temperature sensor is disposed at the air outlet. The controller is signal-connected to the first and second temperature sensors. The monitoring device includes: a first determining module for determining whether the air conditioner is currently in dehumidification or cooling mode; a first acquiring module for acquiring a first temperature value collected by the first temperature sensor and a second temperature value collected by the second temperature sensor; and a first judging module for determining that the condensate level in the drip tray has reached a predetermined height when the first temperature value, the second temperature value, and a preset temperature deviation value meet a first preset condition. The first preset condition includes that the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

[0078] In some embodiments, the monitoring device further includes: a third judgment module, configured to determine that the condensate level in the water receiving pan has not reached a predetermined height when the first temperature value, the second temperature value, and the preset temperature deviation value are determined to be unsatisfactory under the first preset condition.

[0079] In some embodiments, a third temperature sensor is provided on the outer wall of the evaporator, and the monitoring device further includes: a fourth judgment module, configured to determine that the condensate level in the drip tray has not reached a predetermined height when the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition; a third acquisition module, configured to reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor; and a fifth judgment module, configured to determine that the condensate level in the drip tray has reached a predetermined height when the first temperature value, the second temperature value, and the third temperature value meet a second preset condition; wherein the second preset condition includes the third temperature value being less than the second temperature value, and the second temperature value being less than the first temperature value.

[0080] In some embodiments, after the step of reacquiring the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor, the monitoring device further includes: a sixth judgment module, configured to determine that the condensate level in the water receiving pan has reached a predetermined height when the first temperature value, the second temperature value, the third temperature value, and the preset temperature deviation value meet a third preset condition; wherein the third preset condition includes that the difference between the third temperature value and the preset temperature deviation value is less than the first temperature value, and the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

[0081] In some embodiments, the monitoring device further includes: a seventh judgment module, configured to determine that the condensate level in the drip tray has not reached a predetermined height when the reacquired first temperature value, second temperature value, and third temperature value do not meet the second preset condition and the third preset condition; a fourth acquisition module, configured to acquire the first temperature value, second temperature value, and third temperature value again; and an eighth judgment module, configured to determine that the condensate level in the drip tray has not reached a predetermined height when the reacquired first temperature value, second temperature value, third temperature value, and preset temperature deviation value meet the fourth preset condition; wherein the fourth preset condition includes the sum of the third temperature value and the preset temperature deviation value being less than the first temperature value, the first temperature value being less than or equal to the difference between the second temperature value and the preset temperature deviation value, and the first temperature value being greater than or equal to the difference between the second temperature value and the preset temperature deviation value.

[0082] In some embodiments, the air conditioner further includes an alarm, and the monitoring device further includes a ninth judgment module, configured to determine that at least one of the first temperature sensor, the second temperature sensor, and the third temperature sensor has malfunctioned when it is determined that re-acquiring the first temperature value, the second temperature value, and the third temperature value does not meet the fourth preset condition.

[0083] This invention provides an air conditioning liquid level control device, applied to an air conditioner. The air conditioner includes an indoor unit, which comprises a housing, an evaporator, a drip tray, and a controller. The housing has an air outlet. The evaporator is disposed inside the housing. The drip tray is disposed below the evaporator and near the air outlet. A first temperature sensor is disposed on the inner wall of the drip tray. A second temperature sensor is disposed at the air outlet. The controller is signal-connected to the first and second temperature sensors. The control device includes: a second determining module for determining whether the air conditioner is currently in dehumidification or cooling mode; a second acquiring module for acquiring a first temperature value collected by the first temperature sensor and a second temperature value collected by the second temperature sensor; and a second judging module for determining that the condensate level in the drip tray has reached a predetermined height when the first temperature value, the second temperature value, and a preset temperature deviation value meet a first preset condition, and controlling the start of the drain pump to drain the condensate. The first preset condition includes that the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

[0084] In some embodiments, the control device further includes: a tenth judgment module, configured to control the compressor and the drain pump to drain for a preset time when the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, and the condensate level in the water receiving pan has not reached a predetermined height; a fourth acquisition module, configured to reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor; and an eleventh judgment module, configured to control the compressor to be shut down and maintain the original operating state of the drain pump when the first temperature value, the second temperature value, and the third temperature value meet the second preset condition, and the condensate level in the water receiving pan reaches a predetermined height; wherein the second preset condition includes the third temperature value being less than the second temperature value, and the second temperature value being less than the first temperature value.

[0085] In some embodiments, the control device further includes, after the step of reacquiring the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor, a twelfth judgment module, configured to, when determining that the first temperature value, the second temperature value, the third temperature value, and the preset temperature deviation value meet a third preset condition, the condensate level in the water receiving pan reaches a predetermined height, control the compressor to be shut down, and maintain the original operating state of the drain pump; wherein, the third preset condition includes that the difference between the third temperature value and the preset temperature deviation value is less than the first temperature value, and the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

[0086] In some embodiments, the control device further includes: a thirteenth judgment module, configured to maintain the original operating state of the compressor and the drain pump for a preset duration when the re-acquired first temperature value, second temperature value, and third temperature value do not meet the second preset condition or the third preset condition, and the condensate level in the water receiving pan has not reached a predetermined height; a fifth acquisition module, configured to acquire the first temperature value, second temperature value, and third temperature value again; and a fourteenth judgment module, configured to maintain the original operating state of the compressor and the drain pump when the re-acquired first temperature value, second temperature value, third temperature value, and preset temperature deviation value meet a fourth preset condition, and the condensate level in the water receiving pan has not reached a predetermined height; wherein the fourth preset condition includes the sum of the third temperature value and the preset temperature deviation value being less than the first temperature value, the first temperature value being less than or equal to the difference between the second temperature value and the preset temperature deviation value, and the first temperature value being greater than or equal to the difference between the second temperature value and the preset temperature deviation value. In some embodiments, the control device further includes: a fifteenth judgment module, configured to control the alarm to output a corresponding alarm signal when it is determined that at least one of the first temperature sensor, the second temperature sensor, and the third temperature sensor has malfunctioned when the reacquisition of the first temperature value, the second temperature value, and the third temperature value does not meet the fourth preset condition.

[0087] Please see Figure 7The electronic device may include a processor 110, a communication interface 120, a memory 130, and a communication bus 140, wherein the processor 110, the communication interface 120, and the memory 130 communicate with each other via the communication bus 140. The processor 110 can call logical instructions in the memory 130 to execute an air conditioning liquid level monitoring method, which includes: determining whether the air conditioner is currently in dehumidification or cooling mode; acquiring a first temperature value collected by a first temperature sensor and a second temperature value collected by a second temperature sensor; and, when the first temperature value, the second temperature value, and a preset temperature deviation value meet a first preset condition, causing the water receiving tray to reach a predetermined height and controlling the start of the drain pump to drain water; wherein the first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

[0088] Furthermore, the logical instructions in the aforementioned memory 130 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0089] The present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements an air conditioning liquid level monitoring method provided by the methods described above. The method includes: determining that the air conditioner is currently in dehumidification or cooling mode; acquiring a first temperature value collected by a first temperature sensor and a second temperature value collected by a second temperature sensor; and when the first temperature value, the second temperature value, and a preset temperature deviation value satisfy a first preset condition, the water receiving tray reaches a predetermined height, and the drain pump is activated to drain water; wherein the first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

[0090] This invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute an air conditioning liquid level monitoring method provided by the above methods. The method includes: determining that the air conditioner is currently in dehumidification or cooling mode; acquiring a first temperature value collected by a first temperature sensor and a second temperature value collected by a second temperature sensor; when the first temperature value, the second temperature value, and a preset temperature deviation value meet a first preset condition, the water receiving tray reaches a predetermined height, and the drain pump is controlled to start draining water; wherein, the first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

[0091] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0092] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0093] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for monitoring the liquid level in an air conditioner, characterized in that, The invention pertains to an air conditioner, which includes an indoor unit comprising a housing, an evaporator, a drip tray, and a controller. The housing has an air outlet. The evaporator is disposed inside the housing. The drip tray is located below the evaporator and near the air outlet. A first temperature sensor is disposed on the inner wall of the drip tray. A second temperature sensor is disposed on the air outlet. A third temperature sensor is disposed on the outer wall of the evaporator. The controller is signal-connected to the first and second temperature sensors. The monitoring method includes: Determine whether the air conditioner is currently in dehumidification or cooling mode; Acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor; When the first temperature value, the second temperature value, and the preset temperature deviation value meet the first preset condition, the condensate level in the water receiving tray is determined to reach a predetermined height. The first preset condition includes that the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value; When the first temperature value, the second temperature value, and the third temperature value are determined to meet the second preset condition, the condensate level in the water receiving tray is determined to reach a predetermined height. The second preset condition includes that the third temperature value is less than the second temperature value, and the second temperature value is less than the first temperature value; When it is determined that the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, it is determined that the condensate level in the drip tray has not reached the predetermined height. Reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor.

2. The air conditioning liquid level monitoring method according to claim 1, characterized in that, After the step of reacquiring the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor, the method further includes: When the first temperature value, the second temperature value, the third temperature value, and the preset temperature deviation value meet the third preset condition, it is determined that the condensate level in the water receiving tray has reached the predetermined height. The third preset condition includes that the difference between the third temperature value and the preset temperature deviation value is less than the first temperature value, and the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value.

3. The air conditioning liquid level monitoring method according to claim 2, characterized in that, The monitoring method also includes: When it is determined that the re-acquired first temperature value, second temperature value and third temperature value do not meet the second preset condition and the third preset condition, it is determined that the condensate level in the water receiving pan has not reached the predetermined height. The first temperature value, the second temperature value, and the third temperature value are obtained again. When it is determined that the first temperature value, the second temperature value, the third temperature value and the preset temperature deviation value obtained again meet the fourth preset condition, it is determined that the condensate level in the water receiving pan has not reached the predetermined height. The fourth preset condition includes the following: the sum of the third temperature value and the preset temperature deviation value is less than the first temperature value; the first temperature value is less than or equal to the difference between the second temperature value and the preset temperature deviation value; and the first temperature value is greater than or equal to the difference between the second temperature value and the preset temperature deviation value.

4. The air conditioning liquid level monitoring method according to claim 3, characterized in that, The air conditioner also includes an alarm, and the monitoring method further includes: If it is determined that re-acquiring the first temperature value, the second temperature value, and the third temperature value does not meet the fourth preset condition, it is determined that at least one of the first temperature sensor, the second temperature sensor, and the third temperature sensor has malfunctioned.

5. A method for controlling the liquid level in an air conditioner, characterized in that, The invention pertains to an air conditioner, which includes an indoor unit comprising a housing, an evaporator, a drip tray, and a controller. The housing has an air outlet. The evaporator is disposed inside the housing. The drip tray is disposed below the evaporator and near the air outlet. A first temperature sensor is disposed on the inner wall of the drip tray. A second temperature sensor is disposed on the air outlet. A third temperature sensor is disposed on the outer wall of the evaporator. The controller is signal-connected to the first and second temperature sensors. The control method includes: Determine whether the air conditioner is currently in dehumidification or cooling mode; Acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor; When the first temperature value, the second temperature value, and the preset temperature deviation value meet the first preset condition, the condensate level in the water receiving pan is determined to have reached a predetermined height, and the drain pump is started to drain the water. The first preset condition includes that the first temperature value is less than the difference between the second temperature value and the preset temperature deviation value; When the first temperature value, the second temperature value, and the third temperature value are determined to meet the second preset condition, the condensate level in the water receiving tray is determined to reach a predetermined height. The second preset condition includes that the third temperature value is less than the second temperature value, and the second temperature value is less than the first temperature value; When it is determined that the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition, it is determined that the condensate level in the drip tray has not reached the predetermined height. Reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor.

6. An air conditioning liquid level monitoring device, characterized in that, An air conditioner is used in an air conditioner, the air conditioner including an indoor unit, the indoor unit including a housing, an evaporator, a drip tray, and a controller, the housing having an air outlet; the evaporator being disposed inside the housing; the drip tray being disposed below the evaporator and near the air outlet; a first temperature sensor being disposed on the inner wall of the drip tray; a second temperature sensor being disposed on the air outlet; the controller being signal-connected to the first and second temperature sensors; and a third temperature sensor being disposed on the outer wall of the evaporator, the monitoring device including: The first determining module is used to determine whether the air conditioner is currently in dehumidification or cooling mode; The first acquisition module is used to acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor. A first judgment module is configured to determine that the condensate level in the drip tray has reached a predetermined height when the first temperature value, the second temperature value, and the preset temperature deviation value meet a first preset condition; and to determine that the condensate level in the drip tray has reached a predetermined height when the first temperature value, the second temperature value, and the third temperature value meet a second preset condition, wherein the second preset condition includes the third temperature value being less than the second temperature value, and the second temperature value being less than the first temperature value; and to determine that the condensate level in the drip tray has not reached a predetermined height when the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition; and to reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor. The first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

7. An air conditioning liquid level control device, characterized in that, An air conditioner is used in an air conditioner, the air conditioner including an indoor unit, the indoor unit including a housing, an evaporator, a drip tray, and a controller, the housing having an air outlet; the evaporator being disposed inside the housing; the drip tray being disposed below the evaporator and near the air outlet; a first temperature sensor being disposed on the inner wall of the drip tray; a second temperature sensor being disposed on the air outlet; the controller being signal-connected to the first and second temperature sensors; and a third temperature sensor being disposed on the outer wall of the evaporator, the control device including: The second determining module is used to determine whether the air conditioner is currently in dehumidification or cooling mode. The second acquisition module is used to acquire the first temperature value collected by the first temperature sensor and the second temperature value collected by the second temperature sensor. The second judgment module is used to determine that the condensate level in the drip tray has reached a predetermined height and control the start of the drain pump to drain water when the first temperature value, the second temperature value, and the preset temperature deviation value meet the first preset condition; and to determine that the condensate level in the drip tray has reached a predetermined height when the first temperature value, the second temperature value, and the third temperature value meet the second preset condition, wherein the second preset condition includes the third temperature value being less than the second temperature value and the second temperature value being less than the first temperature value; and to determine that the condensate level in the drip tray has not reached the predetermined height when the first temperature value, the second temperature value, and the preset temperature deviation value do not meet the first preset condition; and to reacquire the first temperature value, the second temperature value, and the third temperature value collected by the third temperature sensor. The first preset condition includes the first temperature value being less than the difference between the second temperature value and the preset temperature deviation value.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the air conditioning liquid level monitoring method as described in any one of claims 1 to 4.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the air conditioning liquid level monitoring method as described in any one of claims 1 to 4.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the air conditioning liquid level monitoring method as described in any one of claims 1 to 4.

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