Control method and device for ducted fan, ducted fan, and storage medium

Abstract

The application relates to the technical field of air conditioners, and discloses a control method for a ducted air conditioner, which comprises the following steps: controlling the ducted air conditioner to sequentially execute multiple static pressure gears, and acquiring real-time fan currents, real-time return air temperatures and real-time coil temperatures corresponding to each static pressure gear; determining one or more optional static pressure gears according to the real-time fan currents corresponding to the static pressure gears; determining a target static pressure gear according to the real-time return air temperatures and the real-time coil temperatures of the optional static pressure gears; and controlling the ducted air conditioner to operate according to the target static pressure gear. The application is suitable for matching the actual installation of the duct resistance by setting a suitable target static pressure gear, so that the comfortable requirements of the air volume and the air temperature can be met at the same time, and the use experience of the ducted air conditioner of a user is improved. The application further discloses a control device for the ducted air conditioner, a ducted air conditioner and a storage medium.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, for example to a control method, device, duct air conditioner, and storage medium for duct air conditioners. Background Technology

[0002] Currently, with economic development, the market share of air conditioners is increasing year by year, and the application of products such as ducted air conditioners is becoming more and more widespread. Most ducted air conditioners are static pressure units, requiring external ductwork. In actual engineering installations, due to limitations such as installation location, duct length, and pipe diameter, a mismatch between the static pressure set by the ducted air conditioner and the actual duct resistance can easily occur. This can lead to the ducted air conditioner setting static pressure being greater than the actual duct resistance, resulting in excessive air velocity and air volume at the outlet. Alternatively, the ducted air conditioner setting static pressure may be less than the actual duct resistance, resulting in insufficient air velocity at the outlet and inability to blow air out. Both of these problems affect the actual working effect of the ducted air conditioner. Related technology discloses a self-adaptive static pressure adjustment method for ducted air conditioners. This method detects the windshield setting, fan speed at that windshield, and corresponding actual operating current value of two adjacent static pressure ranges, determines whether the actual operating current value is within the normal current range, and determines the final static pressure range based on the judgment result and preset conditions.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] The relevant technology does not take into account the impact of temperature on user comfort. Even if the air volume is appropriate, the user may still feel uncomfortable due to an unsuitable air temperature, which will affect the user's experience of using the ducted air conditioner.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a control method, device, ducted air conditioner, and storage medium for ducted air conditioners, which can simultaneously meet the comfort requirements of air volume and air temperature, thereby improving the user's experience with the ducted air conditioner.

[0008] In some embodiments, the method includes: controlling the ducted air conditioner to sequentially execute multiple static pressure levels, and acquiring the real-time fan current, real-time return air temperature, and real-time coil temperature corresponding to each static pressure level; determining one or more selectable static pressure levels based on the real-time fan current corresponding to each static pressure level; determining a target static pressure level based on the real-time return air temperature and real-time coil temperature of each selectable static pressure level; and controlling the ducted air conditioner to operate according to the target static pressure level.

[0009] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the control method for the duct machine described above when the program instructions are executed.

[0010] In some embodiments, the ducted air conditioner includes: a housing that forms a receiving cavity and has a return air inlet; a fan disposed within the receiving cavity corresponding to the return air inlet to provide power for air circulation; an evaporator disposed within the receiving cavity corresponding to the fan to allow heat exchange between the refrigerant and the circulating air; and the aforementioned control device for the ducted air conditioner disposed within the receiving cavity.

[0011] In some embodiments, the storage medium stores program instructions that, when executed, perform the control method for the duct machine described above.

[0012] The control method, device, duct unit, and storage medium for ducted air conditioners provided in this disclosure can achieve the following technical effects:

[0013] In this embodiment, after the unit's construction and installation are completed, the ducted air conditioner is started to perform static pressure adaptive adjustment. First, the ducted air conditioner is controlled to sequentially execute multiple static pressure levels for a preset duration. Then, the real-time fan current, real-time return air temperature, and real-time coil temperature corresponding to each static pressure level are recorded. This allows for analysis of the ducted air conditioner's operating conditions under different static pressure levels, facilitating the selection of the static pressure level that best suits the user's comfort experience. By analyzing the real-time fan current corresponding to each static pressure level, one or more selectable static pressure levels suitable for the actual duct resistance can be determined, thus ensuring the comfort requirements of the outlet airflow. Further analysis of the real-time coil temperature and real-time return air temperature for each selectable static pressure level allows for the selection of a target static pressure level from the aforementioned selectable levels, taking temperature factors into account, further ensuring the comfort requirements of the outlet air temperature. Therefore, this embodiment, by setting a suitable target static pressure level to match the actual installed duct resistance, can simultaneously meet the comfort requirements of both outlet airflow and outlet air temperature, thus improving the user's experience with the ducted air conditioner.

[0014] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0016] Figure 1 This is a schematic diagram of the structure of a duct machine provided in an embodiment of this disclosure;

[0017] Figure 2 This is a schematic diagram of a control method for a duct machine provided in an embodiment of this disclosure;

[0018] Figure 3 This is a schematic diagram of another control method for a duct machine provided in an embodiment of this disclosure;

[0019] Figure 4 This is a schematic diagram of another control method for a duct machine provided in an embodiment of this disclosure;

[0020] Figure 5 This is a schematic diagram of another control method for a duct machine provided in an embodiment of this disclosure;

[0021] Figure 6 This is a schematic diagram of a control device for a duct machine provided in an embodiment of this disclosure.

[0022] Figure label:

[0023] 1: Housing; 2: Fan; 3: Evaporator; 4: Baffle; 5: Drain tray; 6: Return air inlet; 7: First temperature sensor; 8: Second temperature sensor; 9: Air duct; 10: Air outlet; 601: Processor; 602: Memory; 603: Communication interface; 604: Bus. Detailed Implementation

[0024] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0025] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0026] Unless otherwise stated, the term "multiple" means two or more.

[0027] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0028] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0029] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0030] Currently, with economic development, the market share of air conditioners is increasing year by year, and the application of products such as ducted air conditioners is becoming more and more widespread. Most ducted air conditioners are static pressure units, requiring external ductwork. In actual engineering installations, due to limitations such as installation location, duct length, and pipe diameter, a mismatch between the static pressure set by the ducted air conditioner and the actual duct resistance can easily occur. This can lead to the ducted air conditioner setting static pressure being greater than the actual duct resistance, resulting in excessive air velocity and air volume at the outlet. Alternatively, the ducted air conditioner setting static pressure may be less than the actual duct resistance, resulting in insufficient air velocity at the outlet and inability to blow air out. Both of these problems affect the actual working effect of the ducted air conditioner. Related technology discloses a self-adaptive static pressure adjustment method for ducted air conditioners. This method detects the windshield setting, fan speed at that windshield, and corresponding actual operating current value of two adjacent static pressure ranges, determines whether the actual operating current value is within the normal current range, and determines the final static pressure range based on the judgment result and preset conditions.

[0031] However, the relevant technologies do not take into account the impact of temperature on user comfort. Even if the air volume is appropriate, the user may still feel uncomfortable due to the unsuitable air temperature, which will affect the user's experience of using the ducted air conditioner.

[0032] Combination Figure 1As shown, this embodiment of the present disclosure provides a ducted air conditioner, including: a housing 1, a fan 2, and an evaporator 3. The housing 1 forms a receiving cavity and is provided with a return air inlet 6. The fan 2 is disposed within the receiving cavity corresponding to the return air inlet 6 to provide power for air circulation. The evaporator 3 is disposed within the receiving cavity corresponding to the fan 2 to facilitate heat exchange between the refrigerant and the circulating air.

[0033] The ducted air conditioner provided in this embodiment can perform cooling, heating, air supply, or standby operation according to user needs, thereby ensuring the user's experience.

[0034] Optionally, the ducted air conditioner also includes a baffle 4. The baffle 4 is disposed within the housing cavity corresponding to the fan 2 to guide the flow of circulating air. This helps to guide the circulating air towards the evaporator 3, thereby improving the air circulation efficiency within the ducted air conditioner.

[0035] Optionally, the ducted air conditioner also includes a drip tray 5. The drip tray 5 is located below the evaporator 3 to collect the condensate produced by the evaporator 3. This helps to drain the condensate produced by the evaporator 3 in a timely manner, thereby ensuring the safe operation of the ducted air conditioner.

[0036] Optionally, the ducted air conditioner also includes a first temperature sensor 7 and a second temperature sensor 8. The first temperature sensor 7 is located at the return air inlet 6 and is used to acquire the real-time return air temperature of the ducted air conditioner. The second temperature sensor 8 is located at the evaporator 3 and is used to acquire the real-time coil temperature of the ducted air conditioner. Thus, this embodiment of the present disclosure can separately detect the real-time return air temperature and the real-time coil temperature of the ducted air conditioner, thereby facilitating a reasonable analysis of the actual working effect of the ducted air conditioner under real-time operating conditions. Furthermore, it can be used to select the target static pressure level, which helps to ensure the comfort requirements of the ducted air conditioner's outlet air temperature.

[0037] Optionally, the ducted air conditioner can be connected to the duct 9 to form an indoor unit. This allows the ducted air conditioner to be connected to the duct 9 and ensures that its static pressure can overcome the duct resistance, thus guaranteeing reliable operation. Furthermore, the ducted air conditioner can adaptively adjust its fan speed according to the different lengths or diameters of the connected duct 9 to generate different static pressure values, thereby meeting the installation requirements of different duct scenarios.

[0038] Optionally, the duct 9 is provided with an air outlet 10. There are one or more air outlets 10 to supply air to the user's environment, thereby ensuring the user's comfort experience.

[0039] Optionally, the refrigerator also includes a control device for the ducted air conditioner (not shown in the figure). The control device for the ducted air conditioner is located within the receiving cavity. In this way, the embodiments of this disclosure can use the control device to execute corresponding control methods to control the ducted air conditioner to perform static pressure adaptive adjustment, thereby simultaneously meeting the comfort requirements of airflow and air temperature, which is beneficial to improving the user's experience with the ducted air conditioner.

[0040] Combination Figure 2 As shown in the figure, this disclosure provides a control method for a ducted air conditioner, including:

[0041] S201, the processor controls the ducted air conditioner to execute multiple static pressure levels in sequence, and obtains the real-time fan current, real-time return air temperature and real-time coil temperature corresponding to each static pressure level.

[0042] S202, the processor determines one or more selectable static pressure levels based on the real-time fan current corresponding to each static pressure level.

[0043] S203, the processor determines the target static pressure level based on the real-time return air temperature and real-time coil temperature of each selectable static pressure level.

[0044] S204, the processor controls the duct unit to operate according to the target static pressure level.

[0045] Using the control method for ducted air conditioners provided in this disclosure, after the unit's construction and installation are completed, the ducted air conditioner is started to perform static pressure adaptive adjustment. First, the ducted air conditioner is controlled to sequentially execute multiple static pressure levels for a preset duration. Then, the real-time fan current, real-time return air temperature, and real-time coil temperature corresponding to each static pressure level are recorded. This allows for analysis of the operating conditions of the ducted air conditioner under different static pressure levels, facilitating the selection of the static pressure level that best meets user comfort. By analyzing the real-time fan current corresponding to each static pressure level, one or more selectable static pressure levels suitable for the actual duct resistance can be determined, thus ensuring the comfort requirements of the outlet air volume. Further analysis of the real-time coil temperature and real-time return air temperature of each selectable static pressure level allows for the selection of the target static pressure level from the aforementioned selectable static pressure levels, further ensuring the comfort requirements of the outlet air temperature. Therefore, by setting an appropriate target static pressure level to match the actual resistance of the installed duct, the present embodiment can simultaneously meet the comfort requirements of both air volume and air temperature, which is beneficial to improving the user's experience with the ducted air conditioner.

[0046] Optionally, combined Figure 3 As shown, the processor determines one or more selectable static pressure levels based on the real-time fan current corresponding to each static pressure level, including:

[0047] S301, the processor determines the reference current range corresponding to each static pressure level.

[0048] S302, the processor determines one or more selectable static pressure levels based on the real-time fan current and the reference current range corresponding to each static pressure level.

[0049] Thus, considering the differences in actual operating conditions at different static pressure levels, this embodiment of the present disclosure can set a corresponding reference current range for each static pressure level to further ensure that the static pressure level can be adapted to the duct resistance while ensuring airflow. Furthermore, by detecting the real-time fan current, it is determined whether each static pressure level meets the corresponding requirements, thereby completing the initial selection of the static pressure level and identifying one or more relatively suitable selectable static pressure levels.

[0050] Optionally, the processor determines the reference current range corresponding to each static pressure level, including: the processor determining the reference current corresponding to each static pressure level; the processor calculating the difference between the reference current and the preset current hysteresis to obtain the lower limit of the reference current range, and calculating the sum of the reference current and the preset current hysteresis to obtain the upper limit of the reference current range, thereby forming the reference current range corresponding to each static pressure level. In this way, the embodiments of this disclosure can set a corresponding reference current for each static pressure level, and then set a relatively suitable preset current hysteresis for that reference current, thereby forming a reasonable reference current range around the reference current, so as to further ensure that the static pressure level is basically compatible with the duct resistance while ensuring airflow.

[0051] Optionally, the preset current hysteresis ranges from [0.1A, 1A]. Preferably, the preset current hysteresis is 0.5A. The preset current hysteresis can also be adjusted in conjunction with the fan speed, or it can be set to any other reasonable value such as 0.3A or 0.8A.

[0052] Optionally, the processor determines one or more selectable static pressure levels based on the real-time fan current and the reference current range corresponding to each static pressure level. This includes determining that a static pressure level is selectable when the real-time fan current corresponding to a static pressure level is within the reference current range. Thus, this embodiment of the present disclosure determines whether each static pressure level meets the corresponding requirements by detecting the real-time fan current. When the detected real-time fan current is within the reference current range, it is determined that the static pressure level is basically compatible with the resistance of the actually installed duct and can ensure the comfort requirements of the airflow. Therefore, this embodiment of the present disclosure completes the preliminary selection of static pressure levels, identifying one or more relatively suitable selectable static pressure levels.

[0053] Optionally, combined Figure 4 As shown, the processor determines the target static pressure level based on the real-time return air temperature and real-time coil temperature of each selectable static pressure level, including:

[0054] S401, the processor calculates the real-time temperature difference between the real-time return air temperature and the real-time coil temperature for each selectable static pressure setting.

[0055] S402, the processor determines the target static pressure level based on the real-time temperature difference between each selectable static pressure level and the target temperature difference.

[0056] In this way, the embodiments of this disclosure detect real-time return air temperature and real-time coil temperature to select the target static pressure level that best meets the user's comfort experience from one or more selectable static pressure levels. By calculating the real-time temperature difference between the real-time return air temperature and the real-time coil temperature, and then comparing it with the target temperature difference, the outlet air temperature of the selected target static pressure level can be maximized to meet the user's comfort needs, which is beneficial to improving the user's ducted air conditioner experience.

[0057] Optionally, the processor determines the target static pressure level based on the real-time temperature difference between each selectable static pressure level and the target temperature difference. This includes: the processor comparing the absolute values ​​of the differences between the real-time temperature difference between each selectable static pressure level and the target temperature difference; and the processor determining the selectable static pressure level corresponding to the minimum absolute value among these differences as the target static pressure level. Thus, this embodiment of the present disclosure calculates the real-time temperature difference between the real-time return air temperature and the real-time coil temperature, and then determines the selectable static pressure level whose real-time temperature difference is closest to the target temperature difference as the target static pressure level. This allows for reasonable control of the heat exchange temperature difference of the ducted air conditioner, ensuring that the outlet air temperature is close to the user's optimal comfort experience, thereby improving the user's experience with the ducted air conditioner.

[0058] Optionally, the target temperature difference can be set according to the operating mode of the ducted air conditioner. Preferably, if the ducted air conditioner is operating in cooling mode, the target temperature difference can be set to 12℃ to meet the user's cooling needs. The target temperature difference can also be adjusted based on the detected real-time return air temperature, or set to any other reasonable value such as 10℃ or 14℃.

[0059] Combination Figure 5 As shown in the embodiments of this disclosure, another control method for a ducted air conditioner is provided, including:

[0060] S501, the processor controls the ducted air conditioner to execute multiple static pressure levels in sequence, and obtains the real-time fan current, real-time return air temperature and real-time coil temperature corresponding to each static pressure level.

[0061] S502, the processor determines one or more selectable static pressure levels based on the real-time fan current corresponding to each static pressure level.

[0062] The S503 processor determines the target static pressure level based on the real-time return air temperature and real-time coil temperature of each selectable static pressure level.

[0063] S504, the processor controls the duct air conditioner to operate according to the target static pressure level.

[0064] The S505 processor adjusts the fan speed based on the real-time return air temperature and the set target temperature.

[0065] Using the control method for ducted air conditioners provided in this disclosure, after the unit's construction and installation are completed, the ducted air conditioner is started to perform static pressure adaptive adjustment. First, the ducted air conditioner is controlled to sequentially execute multiple static pressure levels for a preset duration. Then, the real-time fan current, real-time return air temperature, and real-time coil temperature corresponding to each static pressure level are recorded. This allows for analysis of the operating conditions of the ducted air conditioner under different static pressure levels, facilitating the selection of the static pressure level that best meets user comfort. By analyzing the real-time fan current corresponding to each static pressure level, one or more selectable static pressure levels suitable for the actual duct resistance can be determined, thus ensuring the comfort requirements of the outlet air volume. Further analysis of the real-time coil temperature and real-time return air temperature of each selectable static pressure level allows for the selection of the target static pressure level from the aforementioned selectable static pressure levels, further ensuring the comfort requirements of the outlet air temperature. Therefore, by setting an appropriate target static pressure level to match the actual resistance of the installed duct, this embodiment of the present disclosure can simultaneously meet the comfort requirements of both airflow volume and airflow temperature, thereby improving the user's experience with the ducted air conditioner. Furthermore, when the ducted air conditioner is operating at the target static pressure level, this embodiment of the present disclosure continuously adjusts the fan speed adaptively based on the real-time return air temperature and the set target temperature, thus enabling the setting of appropriate operating parameters for different operating stages of the ducted air conditioner, further ensuring a comfortable user experience.

[0066] Optionally, when the ducted air conditioner is operating in cooling mode, the processor adjusts the fan speed based on the real-time return air temperature and the set target temperature, including: increasing the fan speed when the difference between the real-time return air temperature and the set target temperature is greater than or equal to a first temperature difference; or maintaining the fan speed when the difference between the real-time return air temperature and the set target temperature is less than the first temperature difference but greater than a second temperature difference; or decreasing the fan speed when the difference between the real-time return air temperature and the set target temperature is less than or equal to the second temperature difference. Wherein, the first temperature difference is greater than the second temperature difference.

[0067] Thus, when the ducted air conditioner is operating in cooling mode, if the difference between the real-time return air temperature and the set target temperature is greater than or equal to the first temperature difference, it indicates that the real-time return air temperature deviates significantly from the user's set target temperature. In this case, the indoor temperature needs to be lowered quickly. Therefore, the fan speed is adaptively increased to increase the circulating air volume and improve cooling capacity, thus promptly meeting the user's cooling comfort needs. If the difference between the real-time return air temperature and the set target temperature is less than the first temperature difference but greater than the second temperature difference, it indicates that the real-time return air temperature is close to the user's set target temperature, and the indoor temperature is within the user's set comfort range. Therefore, the current fan speed is maintained to preserve the user's comfort. However, if the difference between the real-time return air temperature and the set target temperature is less than or equal to the second temperature difference, it indicates that the real-time return air temperature has been over-adjusted and deviated from the user's set target temperature. In this case, the indoor temperature needs to be appropriately raised. Therefore, the fan speed is adaptively reduced to decrease the circulating air volume to prevent the user from feeling too cold, thus promptly improving the user's discomfort and enhancing the user's quiet operation. Therefore, the present invention combines real-time return air temperature and set target temperature to adaptively adjust the fan speed, thereby enabling the setting of appropriate operating parameters for different operating stages of the cooling mode, which is beneficial to further ensuring the user's comfort experience.

[0068] Optionally, the processor increases the fan speed by multiplying the fan speed by a first correction coefficient to obtain the increased fan speed and then executing the adjustment. The first correction coefficient is greater than 1. Thus, this embodiment of the present disclosure can utilize the first correction coefficient to reasonably increase the fan speed in cooling mode, increasing the circulating air volume while avoiding user discomfort.

[0069] Optionally, the processor reduces the fan speed by multiplying the fan speed by a second correction coefficient to obtain a reduced fan speed and then executing the reduction. The second correction coefficient is less than 1. Thus, this embodiment of the present disclosure can utilize the second correction coefficient to reasonably reduce the fan speed in cooling mode, thereby reducing the circulating air volume while also improving the user's quiet operation.

[0070] Optionally, the first temperature difference can be set according to environmental conditions such as indoor area. Preferably, the first temperature difference can be set to 1℃ to ensure the user's cooling comfort needs. The first temperature difference can also be adjusted according to the user's actual needs, and can be set to any other reasonable value such as 0.5℃ or 2℃.

[0071] Optionally, the second temperature difference can be set according to environmental conditions such as indoor area. Preferably, the second temperature difference can be set to -1℃ to ensure the user's cooling comfort needs. The second temperature difference can also be adjusted according to the user's actual needs, and can be set to any other reasonable value such as -0.5℃ or -2℃.

[0072] Optionally, the first correction factor can be set within the range of (1.0, 1.5). Preferably, the first correction factor is 1.1. The first correction factor can also be set according to the target static pressure level to reasonably increase the fan speed while ensuring the static pressure level matches the duct resistance, thereby enabling more precise adjustment of the circulating air volume and better guaranteeing the user's cooling comfort experience. Specifically, it can also be set to any other reasonable value such as 1.05 or 1.25.

[0073] Optionally, the value range of the second correction coefficient is [0.5, 1.0]. Preferably, the second correction coefficient is 0.85. The second correction coefficient can also be set according to the target static pressure level to reasonably reduce the fan speed while ensuring that the static pressure level matches the duct resistance, thereby enabling more precise adjustment of the circulating air volume and better ensuring the user's cooling comfort experience. Specifically, it can also be set to any other reasonable value such as 0.7 or 0.9.

[0074] Optionally, when the ducted air conditioner is operating in heating mode, the processor adjusts the fan speed based on the real-time return air temperature and the set target temperature, including: increasing the fan speed when the difference between the real-time return air temperature and the set target temperature is less than or equal to a third temperature difference; or maintaining the fan speed when the difference between the real-time return air temperature and the set target temperature is greater than the third temperature difference but less than the fourth temperature difference; or decreasing the fan speed when the difference between the real-time return air temperature and the set target temperature is greater than or equal to the fourth temperature difference. Wherein, the third temperature difference is less than the fourth temperature difference.

[0075] Thus, when the ducted air conditioner is operating in heating mode, if the difference between the real-time return air temperature and the set target temperature is less than or equal to the third temperature difference, it indicates that the real-time return air temperature deviates significantly from the user's set target temperature. In this case, the indoor temperature needs to be raised rapidly. Therefore, the fan speed is adaptively increased to increase the circulating air volume and improve heating capacity, thus promptly meeting the user's heating comfort needs. If the difference between the real-time return air temperature and the set target temperature is greater than the third temperature difference but less than the fourth temperature difference, it indicates that the real-time return air temperature is close to the user's set target temperature, and the indoor temperature is within the user's set comfort range. Therefore, the current fan speed is maintained to preserve the user's comfort. However, if the difference between the real-time return air temperature and the set target temperature is greater than or equal to the fourth temperature difference, it indicates that the real-time return air temperature has been over-adjusted and deviated from the user's set target temperature. In this case, the indoor temperature needs to be appropriately lowered. Therefore, the fan speed is adaptively reduced to decrease the circulating air volume to prevent the user from overheating, thus promptly improving the user's discomfort and enhancing the user's quiet operation. Therefore, the present invention combines real-time return air temperature and set target temperature to adaptively adjust the fan speed, thereby enabling the setting of appropriate operating parameters for different operating stages of the heating mode, which is beneficial to further ensure the user's comfort experience.

[0076] Optionally, the processor increases the fan speed by multiplying the fan speed by a third correction coefficient to obtain the increased fan speed and then executing the adjustment. The third correction coefficient is greater than 1. Thus, this embodiment of the present disclosure can utilize the third correction coefficient to reasonably increase the fan speed in heating mode, increasing the circulating air volume while avoiding user discomfort.

[0077] Optionally, the processor reduces the fan speed by multiplying the fan speed by a fourth correction coefficient to obtain a reduced fan speed and then executing the reduction. The fourth correction coefficient is less than 1. Thus, this embodiment of the present disclosure can utilize the fourth correction coefficient to reasonably reduce the fan speed in heating mode, thereby reducing the circulating air volume while also improving the user's quiet operation.

[0078] Optionally, the third temperature difference can be set according to environmental conditions such as indoor area. Preferably, the third temperature difference can be set to -1℃ to ensure the user's heating comfort needs. The third temperature difference can also be adjusted according to the user's actual needs, and can be set to any other reasonable value such as -0.5℃ or -2℃.

[0079] Optionally, the fourth temperature difference can be set according to environmental conditions such as indoor area. Preferably, the fourth temperature difference can be set to 1℃ to ensure the user's heating comfort needs. The fourth temperature difference can also be adjusted according to the user's actual needs, and can be set to any other reasonable value such as 0.5℃ or 2℃.

[0080] Optionally, the value range of the third correction factor is (1.0, 1.5). Preferably, the third correction factor is 1.1. The third correction factor can also be set according to the target static pressure level to reasonably increase the fan speed while ensuring that the static pressure level is compatible with the duct resistance, thereby enabling more precise adjustment of the circulating air volume and better ensuring the user's heating comfort experience. Specifically, it can also be set to any other reasonable value such as 1.05 or 1.25.

[0081] Optionally, the fourth correction factor can be set to a value in the range of [0.5, 1.0]. Preferably, the fourth correction factor is 0.85. The fourth correction factor can also be set according to the target static pressure level to reasonably reduce the fan speed while ensuring that the static pressure level matches the duct resistance, thereby enabling more precise adjustment of the circulating air volume and better ensuring the user's heating comfort experience. Specifically, it can also be set to any other reasonable value such as 0.7 or 0.9.

[0082] Combination Figure 6 As shown, this disclosure provides a control device for a ducted air conditioner, including a processor 601 and a memory 602. Optionally, the device may further include a communication interface 603 and a bus 604. The processor 601, communication interface 603, and memory 602 can communicate with each other via the bus 604. The communication interface 603 can be used for information transmission. The processor 601 can call logical instructions in the memory 602 to execute the control method for the ducted air conditioner described in the above embodiment.

[0083] Furthermore, the logic instructions in the aforementioned memory 602 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0084] The memory 602, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 601 executes functional applications and data processing by running the program instructions / modules stored in the memory 602, thereby implementing the control method for the duct machine in the above embodiments.

[0085] The memory 602 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 602 may include high-speed random access memory and may also include non-volatile memory.

[0086] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for a duct machine.

[0087] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0088] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more 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 method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0089] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0090] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0091] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. 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 units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0092] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A control method for a ducted air conditioner, characterized in that, include: The system controls the ducted air handling unit to sequentially execute multiple static pressure levels and obtains the real-time fan current, real-time return air temperature, and real-time coil temperature corresponding to each static pressure level. Based on the real-time fan current corresponding to each static pressure level, one or more selectable static pressure levels are determined; The target static pressure setting is determined based on the real-time return air temperature and real-time coil temperature of each selectable static pressure setting. Control the duct air handling unit to operate at the target static pressure level; The step of determining the target static pressure level based on the real-time return air temperature and real-time coil temperature of each selectable static pressure level includes: calculating the real-time temperature difference between the real-time return air temperature and real-time coil temperature of each selectable static pressure level; and determining the target static pressure level based on the real-time temperature difference between each selectable static pressure level and the target temperature difference. The step of determining the target static pressure level based on the real-time temperature difference and the target temperature difference of each selectable static pressure level includes: comparing the absolute values ​​of the differences between the real-time temperature difference and the target temperature difference of each selectable static pressure level; and determining the selectable static pressure level corresponding to the minimum absolute value as the target static pressure level.

2. The method according to claim 1, characterized in that, The step of determining one or more selectable static pressure levels based on the real-time fan current corresponding to each static pressure level includes: Determine the reference current range corresponding to each static pressure setting; Based on the real-time fan current and reference current range corresponding to each static pressure level, determine one or more selectable static pressure levels.

3. The method according to claim 2, characterized in that, The step of determining one or more selectable static pressure levels based on the real-time fan current and reference current range corresponding to each static pressure level includes: If the real-time fan current corresponding to the static pressure setting is within the reference current range, the static pressure setting is determined to be an optional static pressure setting.

4. The method according to any one of claims 1 to 3, characterized in that, After the duct control unit operates at the target static pressure level, it also includes: Adjust the fan speed according to the real-time return air temperature and the set target temperature.

5. The method according to claim 4, characterized in that, When the ducted air conditioner is operating in cooling mode, adjusting the fan speed based on the real-time return air temperature and the set target temperature includes: If the difference between the real-time return air temperature and the set target temperature is greater than or equal to the first temperature difference, increase the fan speed; or, If the difference between the real-time return air temperature and the set target temperature is less than the first temperature difference but greater than the second temperature difference, maintain the fan speed; or, If the difference between the real-time return air temperature and the set target temperature is less than or equal to the second temperature difference, reduce the fan speed. The first temperature difference is greater than the second temperature difference.

6. The method according to claim 4, characterized in that, When the ducted air conditioner is operating in heating mode, adjusting the fan speed based on the real-time return air temperature and the set target temperature includes: If the difference between the real-time return air temperature and the set target temperature is less than or equal to the third temperature difference, increase the fan speed; or, If the difference between the real-time return air temperature and the set target temperature is greater than the third temperature difference but less than the fourth temperature difference, maintain the fan speed; or, If the difference between the real-time return air temperature and the set target temperature is greater than or equal to the fourth temperature difference, reduce the fan speed. The third temperature difference is smaller than the fourth temperature difference.

7. A control device for a ducted air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the control method for a duct machine as described in any one of claims 1 to 6 when running the program instructions.

8. A ducted air conditioner, characterized in that, include: The shell is constructed to form a receiving cavity and is equipped with a return air vent; The fan, corresponding to the return air inlet, is located inside the receiving cavity to provide power for air circulation; An evaporator, corresponding to a fan, is housed within a cavity to facilitate heat exchange between the refrigerant and the circulating air; and, The control device for the duct machine as described in claim 7 is disposed within the receiving cavity.

9. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the control method for the duct machine as described in any one of claims 1 to 6.

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