Control methods, devices, air conditioners, electronic equipment and storage media

Abstract

This application provides a control method, device, air conditioner, electronic device, and storage medium. The control method includes: in heating mode, when the indoor ambient temperature reaches a set temperature, controlling the indoor fan of the air conditioner to run at a preset speed; re-acquiring the indoor ambient temperature and controlling the air conditioner to start and stop based on the re-acquired indoor ambient temperature; calculating a first temperature difference between the evaporator temperature and the re-acquired indoor ambient temperature; and controlling the operating frequency of the air conditioner's compressor based on the first temperature difference. This invention improves the detection accuracy of the indoor ambient temperature sensor and accurately compensates for the temperature drop caused by the indoor fan starting, while accurately controlling the compressor's operating frequency, thus enabling the air conditioner to achieve energy-saving effects.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and in particular to a control method, device, air conditioner, electronic device and storage medium. Background Technology

[0002] Currently, to improve heat exchange efficiency, air conditioners typically place the evaporator in the air intake area, where the indoor ambient temperature sensor is also located, resulting in a close proximity between the evaporator and the sensor. During heating operation, the evaporator temperature is significantly higher than the indoor ambient temperature. After the air conditioner stops operating at the set temperature, the heat radiation from the evaporator to the indoor ambient temperature sensor causes the detected indoor ambient temperature to be higher than the actual indoor ambient temperature. This prolongs the time interval before the air conditioner restarts, further leading to a large temperature drop during shutdown and poor heating comfort.

[0003] Existing technologies typically correct and compensate for the temperature detected by the temperature sensor during heating to shorten the downtime in all situations, thereby avoiding comfort issues caused by prolonged downtime. However, because the set temperature is more easily reached, this approach leads to frequent on / off cycles of the air conditioner, causing frequent fluctuations in the indoor ambient temperature and thus introducing new comfort problems.

[0004] There is currently no effective solution to the problem that existing technologies, which use methods to correct and compensate for indoor ambient temperature to eliminate the influence of the evaporator on indoor ambient temperature, cause frequent start-stop cycles of the air conditioner and frequent fluctuations in indoor ambient temperature. Summary of the Invention

[0005] This application provides a control method, device, air conditioner, electronic device, and storage medium to solve the problem that the existing technology, which eliminates the influence of the evaporator on the indoor ambient temperature by correcting and compensating for the indoor ambient temperature, will cause the air conditioner to frequently start and stop, resulting in frequent fluctuations in the indoor ambient temperature.

[0006] Firstly, a control method applied to an air conditioner, the control method comprising: In heating mode, when the indoor ambient temperature reaches the set temperature, the indoor fan of the air conditioner is controlled to run at a preset speed. The indoor ambient temperature is reacquired, and the air conditioner is controlled to start and stop based on the reacquired indoor ambient temperature. Calculate the first temperature difference between the evaporator temperature and the reacquired indoor ambient temperature; The operating frequency of the air conditioner's compressor is controlled based on the first temperature difference.

[0007] In one possible implementation, controlling the operating frequency of the air conditioner's compressor based on the first temperature difference includes: Determine whether the first temperature difference is greater than a first preset threshold; If so, the operating frequency of the compressor is controlled to be the first preset frequency; If not, then control the operating frequency of the compressor to the second preset frequency; The second preset frequency is greater than the first preset frequency.

[0008] In one possible implementation, after controlling the operating frequency of the air conditioner's compressor based on the first temperature difference, the control method further includes: At preset intervals, a second temperature difference between the outlet air temperature and the indoor ambient temperature is obtained; The operating frequency of the compressor is controlled based on the second temperature difference.

[0009] In one possible implementation, controlling the operating frequency of the compressor based on the second temperature difference includes: Determine the range in which the second temperature difference falls; The operating frequency of the compressor is controlled according to the range of the second temperature difference.

[0010] In one possible implementation, controlling the operating frequency of the compressor based on the range of the second temperature difference includes: If the second temperature difference is less than the second preset threshold, the operating frequency of the compressor is controlled to increase according to a preset step size; If the second temperature difference is greater than or equal to the second preset threshold and less than or equal to the third preset threshold, the operating frequency of the compressor is controlled to remain unchanged. If the second temperature difference is greater than the third preset threshold, the operating frequency of the compressor is controlled to decrease according to a preset step size.

[0011] In one possible implementation, in heating operation mode, when the indoor ambient temperature reaches the set temperature, the control method further includes: Control the air outlet angle so that the air path avoids the location of people.

[0012] Secondly, this application provides a control device for use in an air conditioner, the control device comprising: The first control module is used to control the indoor fan of the air conditioner to run at a preset speed when the indoor ambient temperature reaches the set temperature in the heating operation mode. The second control module is used to reacquire the indoor ambient temperature and control the air conditioner to start and stop based on the reacquired indoor ambient temperature. A temperature difference calculation module is used to calculate the first temperature difference between the evaporator temperature and the reacquired indoor ambient temperature; The third control module is used to control the operating frequency of the air conditioner's compressor based on the first temperature difference.

[0013] Thirdly, an air conditioner is provided, including the aforementioned control device.

[0014] Fourthly, an electronic device is provided, comprising: a processor and a memory, the processor being configured to execute a control program stored in the memory to implement the control method described in any one of the first aspects.

[0015] Fifthly, a storage medium is provided that stores one or more programs, which can be executed by one or more processors to implement the control method described in any one aspect.

[0016] Compared with the prior art, the technical solution provided in this application has the following advantages: In heating mode, when the indoor ambient temperature reaches the set temperature, the indoor fan is controlled to run at a preset speed, so that the airflow path is: indoor → temperature sensor → evaporator → air outlet. That is to say, the indoor fan can drive strong convection, so that the indoor air can only flow from the temperature sensor to the evaporator. In this way, the heat of the evaporator cannot be diffused to the temperature sensor through radiation, thereby reducing the influence of the evaporator temperature on the indoor ambient temperature detected by the temperature sensor, so that the temperature sensor can accurately detect the indoor ambient temperature. After the indoor fan is turned on, the indoor ambient temperature is re-acquired. The system monitors the ambient temperature and controls the air conditioner's operation based on the newly acquired indoor ambient temperature. This avoids the problem of frequent on / off cycles caused by adjusting the detected indoor ambient temperature to improve user comfort. By calculating the first temperature difference between the evaporator temperature and the newly acquired indoor ambient temperature, the system determines the impact of the indoor fan on the indoor ambient temperature. By controlling the compressor's operating frequency based on this first temperature difference, the system accurately compensates for the temperature drop caused by the indoor fan's operation. At the same time, by accurately controlling the compressor's operating frequency, the system avoids unnecessary increases in compressor frequency, thus achieving energy-saving effects. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This application provides a structural diagram of the back of an air conditioner according to an embodiment of the present application; Figure 2 This application provides a structural view of the front of an air conditioner according to an embodiment of the present application; Figure 3 This is a flowchart of a control method provided according to an embodiment of this application; Figure 4 A flowchart illustrating another control method provided in this application embodiment; Figure 5 A structural block diagram of a control device provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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.

[0022] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0023] To address the technical problem in existing technologies where the evaporator's influence on indoor ambient temperature is eliminated by correcting and compensating for the indoor ambient temperature, leading to frequent start-stop cycles of the air conditioner and frequent fluctuations in indoor ambient temperature, this application provides a control method that avoids the problem of frequent start-stop cycles of the air conditioner caused by correcting the indoor ambient temperature to increase the detected indoor ambient temperature value, thereby improving user comfort.

[0024] Example 1 Figure 1 This is a structural diagram of the back of an air conditioner provided as an embodiment of this application. In one embodiment, the air conditioning device is a household air conditioner. Figure 1 As shown, the air conditioner includes a compressor, such as... Figure 1 As shown, the air conditioner also includes an air inlet 1, an evaporator 3, an indoor fan (not shown in the figure), and an indoor ambient temperature sensor 4. The evaporator 3 is located between the air inlet 1 and the air outlet, the indoor fan is located on the air outlet side of the evaporator, and the indoor ambient temperature sensor 4 is located at the air inlet. Indoor air flows sequentially through the air inlet 1, the indoor ambient temperature sensor 4, and the evaporator 3. Because the indoor ambient temperature sensor 4 is close to the evaporator 3, and the evaporator has a higher temperature, the temperature of the indoor ambient temperature sensor 4 will be higher than normal.

[0025] Figure 2 This application provides a structural view of the front of an air conditioner, as shown in the embodiment of the present application. Figure 2 As shown, the air conditioner also includes an air outlet 2, which includes an upper air outlet 21 and a lower air outlet 22.

[0026] Figure 3 This is a flowchart of a control method provided according to an embodiment of this application, such as... Figure 3 As shown, the method includes the following steps: S301, in heating mode, when the indoor ambient temperature reaches the set temperature, controls the indoor fan to run at the preset speed.

[0027] The high temperature of the evaporator can cause the ambient temperature to be overestimated, resulting in the temperature sensor detecting a higher indoor temperature than the actual temperature. For example, if the evaporator temperature is 45℃ and the actual indoor temperature is 25℃, the temperature sensor might detect an indoor temperature of 28-30℃. The exact deviation depends on the relative position of the temperature sensor and the evaporator, but this issue is unavoidable. If the user sets the temperature to 27℃, the air conditioner should start heating at 25℃ to meet the user's needs. However, if the air conditioner detects 28℃, it assumes the set temperature has been reached and will shut down until the temperature sensor detects an indoor temperature below 27℃. By this time, the actual indoor temperature has already dropped to 24℃. The long interval between the air conditioner stopping at the set temperature and restarting heating can cause thermal discomfort. The air conditioner will eventually stop when the indoor temperature reaches the set temperature. Since the indoor fan is located on the air outlet side of the evaporator, when the indoor fan is controlled to run at a preset speed, the airflow path is: indoor → temperature sensor → evaporator → air outlet. In other words, the indoor fan can drive strong convection, so that indoor air can only flow from the temperature sensor to the evaporator. This prevents the heat from the evaporator from diffusing to the temperature sensor through radiation, thereby reducing the influence of the evaporator temperature on the indoor ambient temperature detected by the temperature sensor. This allows the temperature sensor to accurately detect the indoor ambient temperature, avoiding the need to eliminate the influence of the evaporator on the indoor ambient temperature through correction and compensation, and thus avoiding frequent on / off switching of the air conditioner.

[0028] S302, reacquire the indoor ambient temperature and control the air conditioner to start and stop based on the reacquired indoor ambient temperature.

[0029] After the indoor fan is turned on, the temperature of the indoor ambient temperature sensor is no longer affected by the evaporator, thus accurately reflecting the indoor ambient temperature. At this time, re-acquiring the indoor ambient temperature allows the temperature control to better meet the user's needs.

[0030] S303, calculate the first temperature difference between the evaporator temperature and the reacquired indoor ambient temperature.

[0031] The impact of evaporator radiant heat on the temperature sensor's reading depends on the initial temperature difference between the evaporator and the indoor ambient temperature. The larger the initial temperature difference, the more heat is transferred, and the greater the impact on the accuracy of the temperature sensor's reading. Furthermore, the larger the initial temperature difference, the smaller the decrease in indoor ambient temperature after the indoor fan is turned on; conversely, the smaller the initial temperature difference, the more significant the decrease in indoor ambient temperature. Therefore, to accurately determine the impact of the indoor fan on the indoor ambient temperature and perform precise compensation, it is necessary to calculate the initial temperature difference between the evaporator temperature and the newly acquired indoor ambient temperature.

[0032] S304, the operating frequency of the air conditioner compressor is controlled according to the first temperature difference mentioned above.

[0033] When the indoor fan is turned on, airflow disturbances accelerate convective heat transfer, leading to a drop in indoor temperature. The smaller the temperature difference between the evaporator and the indoor ambient temperature, the more significant the temperature drop; conversely, the larger the temperature difference, the smaller the temperature drop. Therefore, it is necessary to determine the degree of indoor temperature drop based on the aforementioned temperature difference and then control the operating frequency of the air conditioner's compressor to compensate for the room temperature decrease caused by the indoor fan's operation. Simultaneously, accurate control of the compressor's operating frequency prevents unnecessary increases in compressor frequency.

[0034] The technical solution provided in this application embodiment, in heating mode, when the indoor ambient temperature reaches the set temperature, controls the indoor fan to operate at a preset speed, ensuring the airflow path is: indoor → temperature sensor → evaporator → air outlet. In other words, the indoor fan can drive strong convection, ensuring indoor air flows only from the temperature sensor to the evaporator. This prevents heat from the evaporator from diffusing to the temperature sensor through radiation, thus reducing the influence of the evaporator temperature on the indoor ambient temperature detected by the temperature sensor. This allows the temperature sensor to accurately detect the indoor ambient temperature. The indoor ambient temperature is then re-acquired after the indoor fan is turned on, and based on... The system controls the start and stop of the air conditioner based on the re-acquired indoor ambient temperature, avoiding the problem of frequent on / off cycles caused by adjusting the indoor ambient temperature detection value. This improves user comfort. By calculating the first temperature difference between the evaporator temperature and the re-acquired indoor ambient temperature, the system determines the impact of the indoor fan on the indoor ambient temperature. Based on this first temperature difference, the system controls the compressor's operating frequency to accurately compensate for the room temperature drop caused by the indoor fan. At the same time, by accurately controlling the compressor's operating frequency, the system avoids unnecessary increases in compressor frequency, thus achieving energy-saving effects.

[0035] Example 2 This embodiment provides another control method. The larger the first temperature difference, the smaller the temperature drop in the indoor environment after the indoor fan is turned on. In this case, controlling the compressor to operate at a low frequency can compensate for the temperature drop caused by the indoor fan. Therefore, controlling the compressor to operate at a lower first preset frequency can both compensate for the temperature drop and achieve energy saving. The smaller the first temperature difference, the more significant the temperature drop in the indoor environment. In this case, controlling the compressor to operate at a higher frequency is necessary to compensate for the temperature drop caused by the indoor fan. Therefore, controlling the compressor to operate at a higher second preset frequency can compensate for the temperature drop. Based on the above considerations, controlling the compressor's operating frequency according to the first temperature difference includes: determining whether the first temperature difference is greater than a first preset threshold; if so, controlling the compressor's operating frequency to be the first preset frequency; if not, controlling the compressor's operating frequency to be the second preset frequency; wherein the second preset frequency is greater than the first preset frequency.

[0036] To ensure the outlet air temperature quickly approaches and exceeds the indoor ambient temperature detected by the temperature sensor, thereby further meeting comfort requirements, after controlling the compressor's operating frequency based on the first temperature difference, the control method further includes: acquiring a second temperature difference between the outlet air temperature and the indoor ambient temperature at preset intervals; and controlling the compressor's operating frequency based on the second temperature difference. Specifically, this includes: determining the range of the second temperature difference; and controlling the compressor's operating frequency based on the range of the second temperature difference.

[0037] To precisely control the compressor frequency, the compressor's operating frequency is controlled according to the range of the second temperature difference, including: if the second temperature difference is less than a second preset threshold, the compressor's operating frequency is increased by a preset step size; if the second temperature difference is greater than or equal to the second preset threshold and less than or equal to a third preset threshold, the compressor's operating frequency remains unchanged; if the second temperature difference is greater than the third preset threshold, the compressor's operating frequency is decreased by a preset step size. The third preset threshold is greater than the second preset threshold. The preset step size can be 1 Hz or other values ​​set according to actual needs.

[0038] The operating frequency is adjusted by detecting the temperature difference between the outlet air temperature and the ambient temperature, so that the outlet air temperature quickly approaches the inlet air temperature (i.e., the indoor ambient temperature detected by the temperature sensor), but is slightly higher than the inlet air temperature to avoid affecting indoor thermal comfort. When the second temperature difference is too small, the operating frequency is increased to avoid blowing out cold air; when the second temperature difference is too large, the operating frequency is decreased to maintain the indoor ambient temperature near the set temperature; when the temperature difference is within the preset range, the current operating state is maintained. Because the heat output is relatively small and there is outdoor cooling load, the outlet air temperature and inlet air temperature will continue to decrease slowly until the heating operation restart condition is reached (when the ambient temperature is lower than the set temperature), and then it will operate in heating mode.

[0039] As mentioned above, when the indoor ambient temperature reaches the set temperature, the indoor fan will be turned on. After the indoor fan is turned on, the airflow disturbance will accelerate the convection heat transfer, resulting in the indoor temperature dropping. This may result in cold air blowing directly. To avoid this situation, in the heating mode, when the indoor ambient temperature reaches the set temperature, the above control method also includes: controlling the air outlet angle so that the air outlet path avoids the location of people.

[0040] For example, in a cross-flow fan system with an i-type circular cabinet, after reaching the set temperature during heating operation, the air sweeper can be adjusted to the lowest position to allow cool air to blow onto the floor; for a centrifugal fan system with upper and lower air outlet cabinets, after reaching the set temperature during heating operation, the lower air vent can be closed, and the upper air vent air sweeper can be adjusted to the highest position to allow cool air to blow directly onto the ceiling. Because the outlet air temperature is significantly lower than during normal heating operation after the internal fan is turned on, this technical solution can avoid airflow disturbance affecting the user's comfort and ensure thermal comfort.

[0041] Example 3 Figure 4 A flowchart of another control method provided in an embodiment of this application. Figure 4 As shown, the control method includes the following steps: S1 controls the air conditioner to start heating operation and run according to preset parameters.

[0042] S2 detects and records the outlet air temperature, evaporator temperature, and indoor ambient temperature in real time until the set temperature is reached.

[0043] S3 controls the internal fan to run at a preset speed R.

[0044] S4, Obtain evaporator temperature T 蒸 With indoor ambient temperature T 内 The first difference between the two is ΔT1, and it is determined whether ΔT1 is greater than 15℃; if so, step S5 is executed; if not, step S6 is executed.

[0045] S5 controls the air conditioner compressor to run at a preset first frequency f1.

[0046] S6, control the air conditioner compressor to run at a preset second frequency f2, wherein the second frequency f2 is greater than the first frequency f1.

[0047] S7. Obtain the second difference ΔT2 between the outlet air temperature and the indoor ambient temperature, and determine the range of ΔT2. If ΔT2 < 4℃, proceed to step S8. If 4℃ ≤ ΔT2 ≤ 6℃, proceed to step S9. If ΔT2 > 6℃, proceed to step S10.

[0048] S8, control the compressor operating frequency f=f+1, run for 30 seconds and then return to step S7.

[0049] f is the current operating frequency, and f2≤f≤f1.

[0050] S9, control the compressor frequency to run at the current frequency f, run for 30 seconds and then return to step S7.

[0051] S10, control the compressor operating frequency f=f-1, run for 30 seconds and then return to step S7.

[0052] When the indoor ambient temperature reaches the set temperature, the indoor fan will turn on. After the fan is turned on, airflow disturbances accelerate convective heat transfer, causing the room to cool down. This may result in cold air blowing directly onto the floor. To avoid this, for I-type round cabinet units in cross-flow fan systems, after reaching the set temperature during heating operation, the air sweeper can be adjusted to the lowest position so that the cold air blows onto the floor. For top and bottom outlet cabinet units in centrifugal fan systems, after reaching the set temperature during heating operation, the lower air vent can be closed, and the upper air vent air sweeper can be adjusted to the highest position so that the cold air blows directly onto the ceiling. Because the outlet air temperature is significantly lower than during normal heating operation, this technical solution can prevent airflow disturbances from affecting the user's comfort and ensure thermal comfort.

[0053] This invention is a control method for improving the heating comfort of an air conditioning system. The method is applied to an air conditioner, which includes an upper air outlet, a lower air outlet, an air inlet, an evaporator, and an indoor ambient temperature sensing bulb located at the air inlet.

[0054] During the heating operation of the air conditioner, after reaching the set temperature, the compressor runs at a preset frequency and the indoor fan runs at a preset speed.

[0055] Once the set temperature is reached, the degree of influence of the evaporator's high temperature on the thermal radiation of the ambient temperature sensor is determined by the temperature difference between the evaporator and the ambient temperature. A larger temperature difference results in more heat transfer, and consequently, a greater impact on the accuracy of the ambient temperature sensor. Based on the degree of impact, two (or more) preset frequencies can be used. A larger temperature difference corresponds to a lower preset operating frequency; a smaller temperature difference corresponds to a higher preset operating frequency.

[0056] The system then adjusts the operating frequency by detecting the temperature difference between the outlet air temperature and the ambient temperature. This ensures the outlet air temperature quickly approaches the inlet air temperature (the indoor ambient temperature detected by the temperature sensor), but remains slightly higher to avoid affecting indoor thermal comfort. When the second temperature difference is too small, the operating frequency is increased to prevent cold air from being blown out; when the second temperature difference is too large, the operating frequency is decreased to maintain the indoor ambient temperature near the set temperature; when the temperature difference is within the preset range, the current operating state is maintained. Due to the relatively low heat output and the presence of outdoor cooling load, both the outlet and inlet air temperatures will continue to decrease slowly until the conditions for restarting heating operation are met (when the ambient temperature is lower than the set temperature), at which point the system will operate in heating mode.

[0057] This embodiment achieves the following technical effects: 1. After the indoor ambient temperature reaches the set temperature, the indoor fan is controlled to run at a preset speed. The indoor fan can drive strong convection, ensuring that indoor air can only flow from the temperature sensor to the evaporator. This prevents the heat from the evaporator from diffusing to the temperature sensor through radiation, thereby reducing the influence of the evaporator temperature on the indoor ambient temperature detected by the temperature sensor. This allows the temperature sensor to accurately detect the indoor ambient temperature, solving the problem of high indoor ambient temperature readings caused by evaporator heat radiation, which leads to long intervals between heating starts, large temperature drops, and thermal discomfort, thus improving thermal comfort. 2. It fundamentally eliminates the problem of inaccurate indoor ambient temperature detection by the temperature sensor, rather than correcting the temperature detected by the temperature sensor. This avoids inconsistencies in accuracy under different system loads caused by direct correction and compensation, leading to more frequent start-ups and shutdowns, exacerbating thermal discomfort caused by frequent fluctuations in indoor ambient temperature, and further improving comfort.

[0058] Example 4 This embodiment provides a control device for implementing the control method of the above embodiment. Figure 5 A structural block diagram of a control device provided in an embodiment of the present invention is shown below. Figure 5 As shown, the control device includes: The first control module 10 is used to control the indoor fan of the air conditioner to run at a preset speed when the indoor ambient temperature reaches the set temperature in the heating operation mode.

[0059] The high temperature of the evaporator can cause the ambient temperature to be overestimated, resulting in the temperature sensor detecting a higher indoor temperature than the actual temperature. For example, if the evaporator temperature is 45℃ and the actual indoor temperature is 25℃, the temperature sensor might detect an indoor temperature of 28-30℃. The exact deviation depends on the relative position of the temperature sensor and the evaporator, but this issue is unavoidable. If the user sets the temperature to 27℃, the air conditioner should start heating at 25℃ to meet the user's needs. However, if the air conditioner detects 28℃, it assumes the set temperature has been reached and will shut down until the temperature sensor detects an indoor temperature below 27℃. By this time, the actual indoor temperature has already dropped to 24℃. The long interval between the air conditioner stopping at the set temperature and restarting heating can cause thermal discomfort. The air conditioner will eventually stop when the indoor temperature reaches the set temperature. Since the indoor fan is located on the air outlet side of the evaporator, when the indoor fan is controlled to run at a preset speed, the airflow path is: indoor → temperature sensor → evaporator → air outlet. In other words, the indoor fan can drive strong convection, so that indoor air can only flow from the temperature sensor to the evaporator. This prevents the heat from the evaporator from diffusing to the temperature sensor through radiation, thereby reducing the influence of the evaporator temperature on the indoor ambient temperature detected by the temperature sensor. This allows the temperature sensor to accurately detect the indoor ambient temperature, avoiding the need to eliminate the influence of the evaporator on the indoor ambient temperature through correction and compensation, and thus avoiding frequent on / off switching of the air conditioner.

[0060] The second control module 20 is used to reacquire the indoor ambient temperature and control the air conditioner to start and stop based on the reacquired indoor ambient temperature.

[0061] After the indoor fan is turned on, the temperature of the indoor ambient temperature sensor is no longer affected by the evaporator, thus accurately reflecting the indoor ambient temperature. At this time, re-acquiring the indoor ambient temperature allows the temperature control to better meet the user's needs.

[0062] Temperature difference calculation module 30 is used to calculate the first temperature difference between the evaporator temperature and the reacquired indoor ambient temperature.

[0063] The impact of evaporator radiant heat on the temperature sensor's reading depends on the initial temperature difference between the evaporator and the indoor ambient temperature. The larger the initial temperature difference, the more heat is transferred, and the greater the impact on the accuracy of the temperature sensor's reading. Furthermore, the larger the initial temperature difference, the smaller the decrease in indoor ambient temperature after the indoor fan is turned on; conversely, the smaller the initial temperature difference, the more significant the decrease in indoor ambient temperature. Therefore, to accurately determine the impact of the indoor fan on the indoor ambient temperature and perform precise compensation, it is necessary to calculate the initial temperature difference between the evaporator temperature and the newly acquired indoor ambient temperature.

[0064] The third control module 40 is used to control the operating frequency of the air conditioner's compressor based on the first temperature difference mentioned above.

[0065] When the indoor fan is turned on, airflow disturbances accelerate convective heat transfer, leading to a drop in indoor temperature. The smaller the temperature difference between the evaporator and the indoor ambient temperature, the more significant the temperature drop; conversely, the larger the temperature difference, the smaller the temperature drop. Therefore, it is necessary to determine the degree of indoor temperature drop based on the aforementioned temperature difference and then control the operating frequency of the air conditioner's compressor to compensate for the room temperature decrease caused by the indoor fan's operation. Simultaneously, accurate control of the compressor's operating frequency prevents unnecessary increases in compressor frequency.

[0066] The technical solution provided in this application embodiment, in heating mode, when the indoor ambient temperature reaches the set temperature, controls the indoor fan to run at a preset speed, ensuring the airflow path is: indoor → temperature sensor → evaporator → air outlet. This means the indoor fan drives strong convection, allowing indoor air to flow only from the temperature sensor to the evaporator. This prevents heat from the evaporator from radiating to the temperature sensor, reducing the impact of the evaporator temperature on the indoor ambient temperature detected by the temperature sensor. This allows the temperature sensor to accurately detect the indoor ambient temperature. By re-acquiring the indoor ambient temperature after the indoor fan is turned on, and controlling the air conditioner's on / off operation based on this re-acquisition, temperature control better meets user needs. By calculating the first temperature difference between the evaporator temperature and the re-acquisitioned indoor ambient temperature, the degree of impact of the indoor fan's operation on the indoor ambient temperature is determined. By controlling the compressor's operating frequency based on this first temperature difference, the amount of room temperature reduction caused by the indoor fan's operation is accurately compensated. Simultaneously, by accurately controlling the compressor's operating frequency, unnecessary increases in compressor frequency are avoided, resulting in energy-saving effects for the air conditioner.

[0067] The larger the first temperature difference, the smaller the temperature drop in the indoor environment after the indoor fan is turned on. In this case, controlling the compressor to operate at a low frequency can compensate for the temperature drop caused by the indoor fan being turned on. Therefore, controlling the compressor to operate at a lower first preset frequency can both compensate for the temperature drop and achieve energy saving. The smaller the first temperature difference, the more significant the temperature drop in the indoor environment. In this case, controlling the compressor to operate at a higher frequency is necessary to compensate for the temperature drop caused by the indoor fan being turned on. Therefore, controlling the compressor to operate at a higher second preset frequency can compensate for the temperature drop. Based on the above considerations, the third control module 40 is specifically used to: determine whether the first temperature difference is greater than the first preset threshold; if so, control the compressor to operate at the first preset frequency; if not, control the compressor to operate at the second preset frequency; wherein the second preset frequency is greater than the first preset frequency.

[0068] To ensure the outlet air temperature quickly approaches and exceeds the indoor ambient temperature detected by the temperature sensor, further meeting comfort requirements, after controlling the compressor's operating frequency based on the first temperature difference, the third control module is also used to: acquire a second temperature difference between the outlet air temperature and the indoor ambient temperature at preset intervals; and control the compressor's operating frequency based on the second temperature difference. Specifically, this includes determining the range of the second temperature difference and controlling the compressor's operating frequency based on the range of the second temperature difference.

[0069] To precisely control the compressor frequency, the compressor's operating frequency is controlled according to the range of the second temperature difference, including: if the second temperature difference is less than a second preset threshold, the compressor's operating frequency is increased by a preset step size; if the second temperature difference is greater than or equal to the second preset threshold and less than or equal to a third preset threshold, the compressor's operating frequency remains unchanged; if the second temperature difference is greater than the third preset threshold, the compressor's operating frequency is decreased by a preset step size. The third preset threshold is greater than the second preset threshold. The preset step size can be 1 Hz or other values ​​set according to actual needs.

[0070] The operating frequency is adjusted by detecting the temperature difference between the outlet air temperature and the ambient temperature, so that the outlet air temperature quickly approaches the inlet air temperature (i.e., the indoor ambient temperature detected by the temperature sensor), but is slightly higher than the inlet air temperature to avoid affecting indoor thermal comfort. When the second temperature difference is too small, the operating frequency is increased to avoid blowing out cold air; when the second temperature difference is too large, the operating frequency is decreased to maintain the indoor ambient temperature near the set temperature; when the temperature difference is within the preset range, the current operating state is maintained. Because the heat output is relatively small and there is outdoor cooling load, the outlet air temperature and inlet air temperature will continue to decrease slowly until the heating operation restart condition is reached (when the ambient temperature is lower than the set temperature), and then it will operate in heating mode.

[0071] As mentioned above, when the indoor ambient temperature reaches the set temperature, the indoor fan will be turned on. After the indoor fan is turned on, the airflow disturbance will accelerate the convection heat transfer, resulting in the indoor temperature dropping. This may result in cold air blowing directly on the room. To avoid this situation, the above-mentioned control device also includes a fourth control module, which is used to control the air outlet angle when the indoor ambient temperature reaches the set temperature in the heating operation mode, so that the air outlet path avoids the location of people.

[0072] For example, in a cross-flow fan system with an i-type circular cabinet, after reaching the set temperature during heating operation, the air sweeper can be adjusted to the lowest position to allow cool air to blow onto the floor; for a centrifugal fan system with upper and lower air outlet cabinets, after reaching the set temperature during heating operation, the lower air vent can be closed, and the upper air vent air sweeper can be adjusted to the highest position to allow cool air to blow directly onto the ceiling. Because the outlet air temperature is significantly lower than during normal heating operation after the internal fan is turned on, this technical solution can avoid airflow disturbance affecting the user's comfort and ensure thermal comfort.

[0073] Example 5 This embodiment provides an air conditioner, including the control device described in Embodiment 4 above.

[0074] Example 6 This embodiment provides an electronic device, including a processor and a memory. The processor is used to execute a control program stored in the memory to implement the control method of the above embodiment. Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application, such as... Figure 6 As shown, this application provides a device including a processor 111, a communication interface 112, a memory 113, and a communication bus 114. The processor 111, the communication interface 112, and the memory 113 communicate with each other through the communication bus 114. The memory 113 is used to store computer programs. In one embodiment of this application, when the processor 111 executes the program stored in the memory 113, it implements the control method provided in any of the aforementioned method embodiments.

[0075] Example 7 This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the control method provided in any of the foregoing method embodiments.

[0076] 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.

[0077] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, 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.

[0078] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0079] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A control method applied to an air conditioner, characterized by, The control method includes: In heating mode, when the indoor ambient temperature reaches the set temperature, the indoor fan of the air conditioner is controlled to run at a preset speed. The indoor ambient temperature is reacquired, and the air conditioner is controlled to start and stop based on the reacquired indoor ambient temperature. Calculate the first temperature difference between the evaporator temperature and the reacquired indoor ambient temperature; The operating frequency of the air conditioner's compressor is controlled based on the first temperature difference.

2. The method of claim 1, wherein, The step of controlling the operating frequency of the air conditioner's compressor based on the first temperature difference includes: Determine whether the first temperature difference is greater than a first preset threshold; If so, the operating frequency of the compressor is controlled to be the first preset frequency; If not, then control the operating frequency of the compressor to the second preset frequency; The second preset frequency is greater than the first preset frequency.

3. The method of claim 1, wherein, After controlling the operating frequency of the air conditioner's compressor based on the first temperature difference, the control method further includes: At preset intervals, a second temperature difference between the outlet air temperature and the indoor ambient temperature is obtained; The operating frequency of the compressor is controlled based on the second temperature difference.

4. The method of claim 3, wherein, The step of controlling the operating frequency of the compressor based on the second temperature difference includes: Determine the range in which the second temperature difference falls; The operating frequency of the compressor is controlled according to the range of the second temperature difference.

5. The method of claim 4, wherein, The step of controlling the operating frequency of the compressor based on the range of the second temperature difference includes: If the second temperature difference is less than the second preset threshold, the operating frequency of the compressor is controlled to increase according to a preset step size; If the second temperature difference is greater than or equal to the second preset threshold and less than or equal to the third preset threshold, the operating frequency of the compressor is controlled to remain unchanged. If the second temperature difference is greater than the third preset threshold, the operating frequency of the compressor is controlled to decrease according to a preset step size.

6. The method of claim 1, wherein, In heating operation mode, when the indoor ambient temperature reaches the set temperature, the control method further includes: Control the air outlet angle so that the air path avoids the location of people.

7. A control device applied to an air conditioner, characterized in that, The device includes: The first control module is used to control the indoor fan of the air conditioner to run at a preset speed when the indoor ambient temperature reaches the set temperature in the heating operation mode. The second control module is used to reacquire the indoor ambient temperature and control the air conditioner to start and stop based on the reacquired indoor ambient temperature. The temperature difference calculation module is used to calculate the first temperature difference between the evaporator temperature and the reacquired indoor ambient temperature; The third control module is used to control the operating frequency of the air conditioner's compressor based on the first temperature difference.

8. An air conditioner characterized by comprising: Includes the control device as described in claim 7.

9. An electronic device, comprising: include: A processor and a memory, the processor being configured to execute a control program stored in the memory to implement the control method according to any one of claims 1-6.

10. A storage medium, characterized by The storage medium stores one or more programs, which can be executed by one or more processors to implement the control method according to any one of claims 1-6.

Images