An air volume control method and device, an air conditioner indoor unit, and a storage medium

Abstract

Embodiments of the present application disclose a kind of air volume control method, device, air conditioner inner machine and storage medium, air conditioner inner machine is arranged for obtaining motor temperature first temperature sensing component and for obtaining ambient temperature second temperature sensing component, by obtaining the rated temperature difference of air conditioner inner machine, rated temperature difference is the difference between motor temperature and ambient temperature when air conditioner inner machine is at preset rotating speed under rated static pressure;Control the motor of air conditioner inner machine at preset rotating speed under current static pressure;According to the current motor temperature obtained by first temperature sensing component, and the current ambient temperature obtained by second temperature sensing component, calculate the target temperature difference of air conditioner inner machine under current static pressure;According to the gap between target temperature difference and rated temperature difference, determine the motor rotating speed adjustment strategy of air conditioner inner machine under current static pressure, to control the air volume constant of air conditioner inner machine under different static pressure, so that the air volume constant of air conditioner inner machine is output under different static pressure.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to an airflow control method, device, indoor air conditioning unit, and storage medium, wherein the storage medium is a computer-readable storage medium. Background Technology

[0002] The resistance encountered by the air supply unit of an air conditioner varies depending on the installation location. The resistance that the air supply unit overcomes can be called static pressure. If the resistance to the air supply is large at the installation location, the static pressure is large; if the resistance to the air supply is small at the installation location, the static pressure is small.

[0003] Generally, different fan speeds of the indoor unit of an air conditioner have corresponding fixed speeds. The air volume corresponding to the same fan speed is different under different static pressures. When the static pressure increases, the air volume will decrease, resulting in poor cooling effect during cooling. When the static pressure decreases, the air volume of the ducted air conditioner will increase. An excessively large air volume often generates more noise, affecting the rest, work and daily life of the homeowner. Summary of the Invention

[0004] This application provides an airflow control method, device, indoor air conditioner unit, and storage medium, which can control the airflow of the indoor air conditioner unit to remain constant under different static pressures.

[0005] This application provides an airflow control method applied to an indoor unit of an air conditioner. The indoor unit is equipped with a first temperature-sensing component for acquiring motor temperature and a second temperature-sensing component for acquiring ambient temperature. The method includes:

[0006] The rated temperature difference of the indoor unit of the air conditioner is obtained. The rated temperature difference is the difference between the motor temperature and the ambient temperature when the indoor unit of the air conditioner is running at a preset speed under rated static pressure.

[0007] The motor of the indoor unit of the air conditioner is controlled to run at the preset speed under the current static pressure;

[0008] Based on the current motor temperature obtained by the first temperature sensing component and the current ambient temperature obtained by the second temperature sensing component, the target temperature difference of the indoor unit of the air conditioner under the current static pressure is calculated.

[0009] Based on the difference between the target temperature difference and the rated temperature difference, a motor speed adjustment strategy for the indoor unit of the air conditioner under the current static pressure is determined to control the air volume of the indoor unit of the air conditioner to remain constant under different static pressures.

[0010] Accordingly, this application also provides an airflow control device, comprising:

[0011] The acquisition unit is used to acquire the rated temperature difference of the indoor unit of the air conditioner, wherein the rated temperature difference is the difference between the motor temperature and the ambient temperature when the indoor unit of the air conditioner is running at a preset speed under rated static pressure.

[0012] The control unit is used to control the motor of the indoor unit of the air conditioner to run at the preset speed under the current static pressure;

[0013] The calculation unit is used to calculate the target temperature difference of the indoor unit of the air conditioner under the current static pressure based on the current motor temperature obtained by the first temperature sensing component and the current ambient temperature obtained by the second temperature sensing component.

[0014] The strategy determination unit is used to determine the motor speed adjustment strategy of the indoor air conditioner under the current static pressure based on the difference between the target temperature difference and the rated temperature difference, so as to control the air volume of the indoor air conditioner to be constant under different static pressures.

[0015] In one embodiment, the strategy determination unit includes:

[0016] A deviation calculation subunit is used to calculate the temperature deviation between the target temperature difference and the rated temperature difference;

[0017] The first speed strategy determination subunit is used to determine the motor speed adjustment strategy as maintaining the speed of the motor of the indoor unit of the air conditioner if the temperature deviation is within the speed holding range.

[0018] The second speed strategy determination subunit is used to determine the motor speed adjustment strategy as increasing the motor speed if the temperature deviation is within the acceleration range, where any value in the acceleration range is greater than the value in the speed holding range.

[0019] The third speed strategy determination subunit is used to determine that if the temperature deviation is within the deceleration range, the motor speed adjustment strategy is to reduce the speed of the motor, where any value in the deceleration range is less than the value in the speed holding range.

[0020] In one embodiment, the speed range includes a first acceleration sub-range and a second acceleration sub-range, where any value in the first acceleration sub-range is greater than a value in the second acceleration sub-range. The second speed strategy determining sub-unit includes:

[0021] The first acceleration strategy determination module is used to determine the motor speed adjustment strategy as controlling the motor speed to increase the first speed increment if the temperature deviation is within the first acceleration sub-interval.

[0022] The second acceleration strategy determination module is used to determine the motor speed adjustment strategy as controlling the motor speed to increase a second speed increment if the temperature deviation is within the second acceleration sub-interval, wherein the second speed increment is greater than the first speed increment.

[0023] In one embodiment, the deceleration range includes a first deceleration sub-range and a second deceleration sub-range, where any value in the first deceleration sub-range is greater than a value in the second deceleration sub-range, and the third speed strategy determination subunit includes:

[0024] The first deceleration strategy determination module is used to determine the motor speed adjustment strategy as controlling the motor speed to decrease by a first speed reduction if the temperature deviation is within the first deceleration sub-range.

[0025] The second deceleration strategy determination module is used to determine that if the temperature deviation is within the second deceleration sub-range, the motor speed adjustment strategy is to control the speed of the indoor unit of the air conditioner to decrease by a second speed reduction amount, wherein the second speed reduction amount is greater than the first speed reduction amount.

[0026] In one embodiment, the airflow control device further includes:

[0027] A response unit is configured to respond to an airflow adjustment command for the indoor unit of the air conditioner and determine the motor speed corresponding to the airflow adjustment command.

[0028] An adjustment unit is used to adjust the motor speed according to the motor speed adjustment strategy to obtain the adjusted motor speed;

[0029] The motor is controlled to operate at the adjusted motor speed.

[0030] In one embodiment, the acquisition unit includes:

[0031] The instruction response subunit is used to respond to the constant air volume control instruction for the target air deflector and determine the preset speed corresponding to the target air deflector.

[0032] The first temperature difference acquisition subunit is used to acquire the rated temperature difference of the indoor unit of the air conditioner when it is running at the preset speed under rated static pressure.

[0033] In one embodiment, the indoor unit of the air conditioner is equipped with a photosensitive component, and the acquisition unit includes:

[0034] A brightness acquisition subunit is used to acquire the ambient brightness of the installation environment of the indoor unit of the air conditioner through the photosensitive component;

[0035] The second temperature difference acquisition subunit is used to acquire the rated temperature difference of the indoor unit of the air conditioner if the ambient brightness changes.

[0036] Accordingly, this application also provides an indoor air conditioning unit, including a memory and a processor; the memory stores a computer program, and the processor is used to run the computer program in the memory to execute any of the air volume control methods provided in this application.

[0037] Accordingly, embodiments of this application also provide a computer-readable storage medium for storing a computer program, which is loaded by a processor to execute any of the airflow control methods provided in embodiments of this application.

[0038] In this embodiment, the indoor unit of the air conditioner is equipped with a first temperature sensing component for acquiring the motor temperature and a second temperature sensing component for acquiring the ambient temperature. By acquiring the rated temperature difference of the indoor unit, which is the difference between the motor temperature and the ambient temperature when the indoor unit is running at a preset speed under rated static pressure, the motor of the indoor unit is controlled to run at a preset speed under the current static pressure. Based on the current motor temperature acquired by the first temperature sensing component and the current ambient temperature acquired by the second temperature sensing component, the target temperature difference of the indoor unit under the current static pressure is calculated. Based on the difference between the target temperature difference and the rated temperature difference, the motor speed adjustment strategy of the indoor unit under the current static pressure is determined to control the air volume of the indoor unit to remain constant under different static pressures.

[0039] Based on the difference between the target temperature difference and the rated temperature difference of the indoor unit under the current installation environment, this application embodiment can determine the relationship between the static pressure of the current installation environment and the rated static pressure. This allows for the determination of a motor speed adjustment strategy that makes the air volume output by the indoor unit under the current static pressure similar to that under the rated static pressure. This ensures that the indoor unit can maintain a constant air volume under different static pressures, thus improving the user experience. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart of the airflow control method provided in the embodiments of this application;

[0042] Figure 2 This is a schematic diagram of the air volume control device provided in the embodiments of this application;

[0043] Figure 3 This is a schematic diagram of the structure of the indoor unit of an air conditioner provided in an embodiment of this application;

[0044] Figure 4 This is a schematic diagram showing the connection relationship between the processor and other units provided in an embodiment of this application. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] This application provides an airflow control method, apparatus, indoor air conditioning unit, and computer-readable storage medium. The airflow control apparatus can be integrated into the indoor air conditioning unit, which may include a duct-type indoor air conditioning unit.

[0047] The terminal may include mobile phones, wearable smart devices, tablets, laptops, personal computers (PCs), and in-vehicle computers, etc.

[0048] The server can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms.

[0049] The following sections provide detailed descriptions of each example. It should be noted that the order in which the embodiments are described is not intended to limit the preferred order of the embodiments.

[0050] This embodiment will be described from the perspective of an air volume control device, which can be integrated into the indoor unit of an air conditioner, and the indoor unit of the air conditioner can include a duct-type indoor unit.

[0051] This application provides an airflow control method applied to an indoor air conditioning unit. The indoor air conditioning unit is equipped with a first temperature sensing component for acquiring motor temperature and a second temperature sensing component for acquiring ambient temperature. Figure 1 As shown, the specific process of this airflow control method can be as follows:

[0052] 101. Obtain the rated temperature difference of the indoor unit of the air conditioner. The rated temperature difference is the difference between the motor temperature and the ambient temperature when the indoor unit of the air conditioner is running at a preset speed under rated static pressure.

[0053] Ductless air conditioner indoor units are generally installed in the ceiling. The air supply and return of the ductless air conditioner indoor unit will pass through ducts or grilles. Different ducts and grilles in the installation scenario will produce different resistances to the air supply of the ductless air conditioner.

[0054] For non-ducted air conditioner indoor units, some users, for aesthetic or other reasons, will install the non-ducted air conditioner indoor unit in a single compartment or enclose it with plastic or wooden boards. In this case, the air supply of the non-ducted air conditioner indoor unit will experience different resistance.

[0055] The resistance that the indoor unit of an air conditioner overcomes is called static pressure. If the installation location has a large resistance to the air supply, the static pressure will be large; if the installation location has a small resistance to the air supply, the static pressure will be small.

[0056] Generally, different fan speeds of the indoor unit of an air conditioner have corresponding fixed speeds. The air volume corresponding to the same fan speed is different under different static pressures. When the static pressure increases, the air volume will decrease, resulting in poor cooling effect during cooling. When the static pressure decreases, the air volume of the ducted air conditioner will increase. An excessively large air volume often generates more noise, affecting the rest, work and daily life of the homeowner.

[0057] The rated temperature difference is the difference between the temperature of the motor of the indoor unit and the temperature of the installation environment of the indoor unit when the indoor unit operates under rated static pressure for a preset time.

[0058] The rated static pressure can be a preset static pressure. For example, different indoor air conditioning units can be placed in the same environment so that the indoor air conditioning units can work under the rated static pressure in order to measure the rated temperature difference of the indoor air conditioning units.

[0059] The motor temperature can be obtained through a temperature sensing component (i.e., the first temperature sensing component) installed on the windings of the indoor unit of the air conditioner, while the ambient temperature can be obtained through a temperature sensing component (i.e., the second temperature sensing component) installed at the air inlet of the indoor unit of the air conditioner.

[0060] The temperature sensing component can be a temperature sensing bulb or a temperature sensor, etc.

[0061] The rated temperature difference of the indoor unit of an air conditioner can be used to adjust the motor speed of the indoor unit so that the air volume output by the indoor unit at the same fan speed is consistent under different static pressures.

[0062] The rated temperature difference of the indoor unit of the air conditioner can be obtained when a user-triggered command is received, or when a change in the installation environment of the indoor unit of the air conditioner is detected, in order to adjust the motor speed. That is, in one embodiment, the step "obtaining the rated temperature difference of the indoor unit of the air conditioner" specifically includes:

[0063] In response to the constant air volume control command for the target fan speed, the preset speed corresponding to the target fan speed is determined;

[0064] Obtain the rated temperature difference of the indoor unit of the air conditioner when it is running at a preset speed under rated static pressure.

[0065] Users can send constant air volume control commands to the indoor unit of the air conditioner through the air conditioner remote control, control panel, etc. For example, the air conditioner remote control is equipped with a fan speed selection button, which can trigger a constant air volume control command for the selected target fan speed; optionally, the air conditioner remote control can also be equipped with a constant air volume button, which can trigger a constant air volume control command for the currently selected target fan speed.

[0066] The air conditioner remote can be a physical remote or a virtual remote. The virtual remote can be displayed on the screen of a terminal (such as a mobile phone).

[0067] In response to the constant air volume control command, the preset speed of the target fan is determined, and then the rated temperature difference of the indoor unit of the air conditioner at the preset speed for a preset time under the rated voltage is obtained. The preset time can be set to 10 minutes, 20 minutes, etc.

[0068] The relationship between the fan speed and the preset speed can be pre-set. For example, each fan speed corresponds to a different preset speed, or all fan speeds correspond to the same preset speed. If each fan speed corresponds to a preset speed, the preset speed can be the motor speed required by the indoor unit of the air conditioner to generate the corresponding air volume of that fan speed.

[0069] In another embodiment, the indoor unit of the air conditioner may be equipped with components such as a gravity sensor, gyroscope, or inertial measurement unit (IMU) that can detect changes in the installation position of the indoor unit. If a change in the installation position of the indoor unit is detected, the rated temperature difference of the indoor unit is obtained for constant air volume control.

[0070] Optionally, the indoor unit of the air conditioner is equipped with a photosensitive component, and the step "obtaining the rated temperature difference of the indoor unit of the air conditioner" may specifically include:

[0071] The ambient brightness of the installation environment of the indoor unit of the air conditioner is collected by a photosensitive component;

[0072] If the ambient brightness changes, the rated temperature difference of the indoor unit of the air conditioner is obtained.

[0073] Among them, the photosensitive component can be a photosensitive sensor or a camera, or other components that can detect ambient brightness.

[0074] For example, the ambient brightness of the indoor unit of the air conditioner can be collected by the photosensitive component at a preset time (e.g., 10 am every day). Then, the ambient brightness is compared with the ambient brightness collected in the past. If there is a large difference between the ambient brightness collected in the past, the rated temperature is obtained for constant air volume control.

[0075] Optionally, ambient brightness can be collected at different times each day, and the ambient brightness collected at each time can be compared with the ambient brightness collected in the past to determine the time of change. If the proportion of the time of change exceeds the preset proportion, it is determined that the installation environment of the indoor unit of the air conditioner has changed, and the adjustment strategy for the motor speed needs to be re-determined.

[0076] For example, ambient brightness can be collected at times such as 10:00 AM, 2:00 PM, and 9:00 PM. If the ambient brightness is abnormal at two of these times, it is considered that the installation environment of the indoor unit of the air conditioner has changed.

[0077] 102. Control the motor of the indoor unit of the air conditioner to run at a preset speed under the current static pressure;

[0078] Among them, the current static pressure can be the static pressure generated by the current installation environment of the air conditioner indoor unit.

[0079] For example, controlling the motor of the indoor unit of the air conditioner to run at a preset speed under the current static pressure.

[0080] 103. Calculate the target temperature difference of the indoor unit of the air conditioner under the current static pressure based on the current motor temperature obtained by the first temperature sensing component and the current ambient temperature obtained by the second temperature sensing component.

[0081] For example, after the indoor unit of the air conditioner has been running for a certain period of time, the current temperature of the motor of the indoor unit can be obtained through the first temperature sensing component, and the current ambient temperature can be obtained through the second temperature sensing component. The temperature difference between the current motor temperature and the current ambient temperature can be calculated to obtain the target temperature difference.

[0082] The difference between the target temperature difference and the rated temperature difference can be used to determine the difference between the current static pressure and the rated static pressure, so as to determine the strategy for adjusting the speed of the motor of the indoor unit of the air conditioner, so as to keep the air volume of the indoor unit constant under the rated static pressure and the current static pressure.

[0083] 104. Based on the difference between the target temperature difference and the rated temperature difference, determine the motor speed adjustment strategy of the indoor unit of the air conditioner under the current static pressure, so as to control the air volume of the indoor unit of the air conditioner to be constant under different static pressures.

[0084] For example, the difference between the target temperature difference and the rated temperature difference, i.e., the temperature deviation, can be calculated. Then, based on this difference, a motor speed adjustment strategy can be developed for the indoor unit's motor speed under the current static pressure. For instance, when the temperature deviation is small, the indoor unit's motor speed can be kept constant; when the temperature deviation is large, the motor speed can be increased or decreased. In one embodiment, the step "determining the motor speed adjustment strategy for the indoor unit under the current static pressure based on the difference between the target temperature difference and the rated temperature difference" can specifically include:

[0085] Calculate the temperature deviation between the target temperature difference and the rated temperature difference;

[0086] If the temperature deviation is within the speed holding range, then the motor speed adjustment strategy is determined to be to maintain the speed of the indoor unit motor.

[0087] If the temperature deviation is within the acceleration range, the motor speed adjustment strategy is determined to be to increase the motor speed, where any value in the acceleration range is less than the value in the speed holding range.

[0088] If the temperature deviation is within the deceleration range, the motor speed adjustment strategy is determined to reduce the motor speed, where any value in the deceleration range is greater than the value in the speed holding range.

[0089] For example, the temperature deviation between the target temperature difference and the rated temperature difference can be calculated. If the temperature deviation is within the speed holding range, the motor speed adjustment strategy is determined to maintain the speed of the air conditioner indoor unit motor. If the temperature deviation is within the acceleration range, the motor speed adjustment strategy is determined to increase the motor speed. If the temperature deviation is within the deceleration range, the motor speed adjustment strategy is determined to decrease the motor speed.

[0090] Because when the static pressure is larger than the rated static pressure, the air outlet resistance of the air conditioner indoor unit is also larger, the air volume delivered to the environment is smaller, the ambient temperature drops slowly, the ambient temperature is relatively high, and the target temperature difference is relatively small. If it is necessary to maintain a constant air volume, the motor speed needs to be increased; conversely, the motor speed needs to be decreased. Therefore, any value in the acceleration range is less than the value in the speed maintenance range, and any value in the deceleration range is greater than the value in the speed maintenance range.

[0091] In addition, the motor speed adjustment strategy can be determined based on the relationship between motor power and airflow. Since motor power is directly proportional to airflow, when the static pressure is larger than the rated static pressure, the airflow resistance of the indoor unit is also larger, resulting in a smaller airflow delivered to the environment. Consequently, the motor power is lower, the motor temperature is lower, and the target temperature difference is smaller. Therefore, when the difference between the target temperature difference and the rated temperature difference is less than a certain level, the motor speed needs to be increased to keep the airflow of the indoor unit constant; when the difference between the target temperature difference and the rated temperature difference is greater than a certain level, the motor speed needs to be decreased to keep the airflow of the indoor unit constant.

[0092] For example, the rated temperature difference is represented as Tsd, the target temperature difference is represented as T0, the temperature deviation is ΔT=T0-Tsd, the speed holding range is (-3,3), the deceleration range is [3,+∞), the acceleration range is (-∞,-3], any value in the acceleration range is less than the value in the speed holding range, and any value in the deceleration range is greater than the value in the speed holding range.

[0093] You can set the amount by which the speed is increased or decreased, for example, the motor speed can be increased by 30 rpm or decreased by 30 rpm.

[0094] In one embodiment, different sub-intervals within the acceleration range can be configured to correspond to different increases in motor speed. Specifically, the speed range includes a first acceleration sub-interval and a second acceleration sub-interval, where any value in the first acceleration sub-interval is greater than a value in the second acceleration sub-interval. The step "If the temperature deviation is within the acceleration range, then determine the motor speed adjustment strategy as increasing the motor speed" can specifically include:

[0095] If the temperature deviation is within the first acceleration sub-range, the motor speed adjustment strategy is determined to be to control the motor speed to increase the first speed increment.

[0096] If the temperature deviation is within the second acceleration sub-range, the motor speed adjustment strategy is determined to be to control the motor speed to increase the second speed increment, which is greater than the first speed increment.

[0097] For example, if the temperature deviation is within the first acceleration sub-range, the motor speed adjustment strategy is determined to increase the motor speed by the first speed increment; if the temperature deviation is within the second acceleration sub-range, the motor speed adjustment strategy is determined to increase the motor speed by the second speed increment, where the second speed increment is greater than the first speed increment.

[0098] For example, the first acceleration sub-range can be (-6, -3], and the first speed increment can be 60 rpm; the second acceleration sub-range can be (-∞, -6], and the second speed increment can be 120 rpm. If the temperature deviation is within the first acceleration sub-range, the motor speed of the indoor unit of the air conditioner will be increased by 60 rpm; if the temperature deviation is within the second acceleration sub-range, the motor speed of the air conditioner motor will be increased by 120 rpm.

[0099] In one embodiment, different sub-intervals within the deceleration range can be configured to correspond to different speed reduction magnitudes. Specifically, the deceleration range includes a first deceleration sub-interval and a second deceleration sub-interval. Any value in the first deceleration sub-interval is greater than a value in the second deceleration sub-interval. The step "If the temperature deviation is within the deceleration range, then determine the motor speed adjustment strategy as reducing the motor speed" includes:

[0100] If the temperature deviation is within the first deceleration sub-range, the motor speed regulation strategy is determined to be to control the motor speed to decrease by the first speed reduction.

[0101] If the temperature deviation is within the second deceleration sub-range, the motor speed adjustment strategy is determined to control the speed of the indoor air conditioner to decrease by the second speed reduction, which is greater than the first speed reduction.

[0102] For example, the first deceleration sub-range can be [3,6), and the first speed reduction can be 60 rpm; the second deceleration sub-range can be [6,+∞), and the second speed reduction can be 120 rpm. If the temperature deviation is within the first deceleration sub-range, the motor speed of the indoor unit of the air conditioner will be reduced by 60 rpm; if the temperature deviation is within the second deceleration sub-range, the motor speed of the air conditioner motor will be reduced by 120 rpm.

[0103] After determining the motor speed adjustment strategy, the motor speed of the indoor unit of the air conditioner can be adjusted according to the motor speed adjustment strategy to keep the air volume of the indoor unit constant under different static pressures. That is, in one embodiment, after the step "determine the motor speed adjustment strategy of the indoor unit of the air conditioner under the current static pressure based on the difference between the target temperature difference and the rated temperature difference", the method provided in this application embodiment further includes:

[0104] In response to the air volume adjustment command for the indoor unit of the air conditioner, determine the motor speed corresponding to the air volume adjustment command;

[0105] The motor speed is adjusted according to the motor speed adjustment strategy to obtain the adjusted motor speed;

[0106] Control the motor to operate at the adjusted motor speed.

[0107] In response to the air volume adjustment command for the indoor unit of the air conditioner, the motor speed corresponding to the air volume adjustment command is determined. This motor speed is the motor speed required for the indoor unit of the air conditioner to generate the air volume specified by the air volume adjustment command under rated voltage.

[0108] Because there is a difference between the current static pressure and the rated static pressure, the air volume of the indoor unit of the air conditioner deviates from the air volume under the rated static pressure when the motor is running at its speed. Therefore, it is necessary to adjust the motor speed so that the air volume generated by the indoor unit of the air conditioner under the current static pressure is consistent with the air volume generated under the rated voltage.

[0109] For example, suppose the indoor unit of the air conditioner has three fan speed settings: level one corresponds to a motor speed of 800 rpm, level two to 1000 rpm, and level three to 1250 rpm. The motor speed adjustment strategy is to increase the indoor unit's motor speed by 60 rpm. If the user selects level one, the adjusted motor speed will be 800 + 60 = 860 rpm; if the user selects level two, the adjusted motor speed will be 1000 + 60 = 1060 rpm; and if the user selects level three, the adjusted motor speed will be 1250 + 60 = 1310 rpm. The adjusted motor speed then controls the operation of the indoor unit's motor to deliver airflow.

[0110] As can be seen from the above, in this embodiment of the air conditioner, the indoor unit is equipped with a first temperature sensing component for acquiring the motor temperature and a second temperature sensing component for acquiring the ambient temperature. By acquiring the rated temperature difference of the indoor unit, which is the difference between the motor temperature and the ambient temperature when the indoor unit is running at a preset speed under rated static pressure, the motor of the indoor unit is controlled to run at a preset speed under the current static pressure. Based on the current motor temperature acquired by the first temperature sensing component and the current ambient temperature acquired by the second temperature sensing component, the target temperature difference of the indoor unit under the current static pressure is calculated. Based on the difference between the target temperature difference and the rated temperature difference, the motor speed adjustment strategy of the indoor unit under the current static pressure is determined to control the air volume of the indoor unit to remain constant under different static pressures.

[0111] Based on the difference between the target temperature difference and the rated temperature difference of the indoor unit under the current installation environment, this application embodiment can determine the relationship between the static pressure of the current installation environment and the rated static pressure. This allows for the determination of a motor speed adjustment strategy that makes the air volume output by the indoor unit under the current static pressure similar to that under the rated static pressure. This ensures that the indoor unit can maintain a constant air volume under different static pressures, thus improving the user experience.

[0112] To facilitate better implementation of the airflow control method provided in the embodiments of this application, an airflow control device is also provided in one embodiment. The meanings of the terms used are the same as in the airflow control method described above, and specific implementation details can be found in the description of the method embodiments.

[0113] This airflow control device can be integrated into the indoor unit of the air conditioner, such as... Figure 2 As shown, the airflow control device may include: an acquisition unit 301, a control unit 302, a calculation unit 303, and a strategy determination unit 304, as detailed below:

[0114] (1) Acquisition unit 301 is used to acquire the rated temperature difference of the indoor unit of the air conditioner. The rated temperature difference is the difference between the motor temperature and the ambient temperature when the indoor unit of the air conditioner is running at a preset speed under rated static pressure.

[0115] In one embodiment, the acquisition unit 301 includes:

[0116] The instruction response subunit is used to respond to the constant air volume control instruction for the target fan speed and determine the preset speed corresponding to the target fan speed.

[0117] The first temperature difference acquisition subunit is used to acquire the rated temperature difference of the indoor unit of the air conditioner when it is running at a preset speed under rated static pressure.

[0118] In one embodiment, the indoor unit of the air conditioner is equipped with a photosensitive component, and the acquisition unit 301 includes:

[0119] The brightness acquisition subunit is used to acquire the ambient brightness of the installation environment of the indoor unit of the air conditioner through a photosensitive component;

[0120] The second temperature difference acquisition subunit is used to acquire the rated temperature difference of the indoor unit of the air conditioner if the ambient brightness changes.

[0121] (2) Control unit 302 is used to control the motor of the indoor unit of the air conditioner to run at a preset speed under the current static pressure.

[0122] (3) Calculation unit 303 is used to calculate the target temperature difference of the indoor unit of the air conditioner under the current static pressure based on the current motor temperature obtained by the first temperature sensing component and the current ambient temperature obtained by the second temperature sensing component.

[0123] (4) Strategy determination unit 304 is used to determine the motor speed adjustment strategy of the indoor unit of the air conditioner under the current static pressure based on the difference between the target temperature difference and the rated temperature difference, so as to control the air volume of the indoor unit of the air conditioner to be constant under different static pressures.

[0124] In one embodiment, the strategy determination unit 304 includes:

[0125] The deviation calculation subunit is used to calculate the temperature deviation between the target temperature difference and the rated temperature difference;

[0126] The first speed strategy determination subunit is used to determine the motor speed adjustment strategy as maintaining the speed of the air conditioner indoor unit motor if the temperature deviation is within the speed holding range.

[0127] The second speed strategy determination subunit is used to determine the motor speed adjustment strategy as increasing the motor speed if the temperature deviation is within the acceleration range, where any value in the acceleration range is greater than the value in the speed holding range.

[0128] The third speed strategy determination subunit is used to determine the motor speed adjustment strategy as reducing the motor speed if the temperature deviation is within the deceleration range, where any value in the deceleration range is less than the value in the speed holding range.

[0129] In one embodiment, the speed range includes a first acceleration sub-range and a second acceleration sub-range, where any value in the first acceleration sub-range is greater than a value in the second acceleration sub-range. The second speed strategy determining sub-unit includes:

[0130] The first acceleration strategy determination module is used to determine the motor speed adjustment strategy as controlling the motor speed to increase the first speed increment if the temperature deviation is within the first acceleration sub-interval.

[0131] The second acceleration strategy determination module is used to determine the motor speed adjustment strategy as follows if the temperature deviation is within the second acceleration sub-interval: control the motor speed to increase the second speed increment, where the second speed increment is greater than the first speed increment.

[0132] In one embodiment, the deceleration range includes a first deceleration sub-range and a second deceleration sub-range, where any value in the first deceleration sub-range is greater than a value in the second deceleration sub-range. The third speed strategy determination sub-unit includes:

[0133] The first deceleration strategy determination module is used to determine the motor speed adjustment strategy as controlling the motor speed to decrease by the first speed reduction if the temperature deviation is within the first deceleration sub-range.

[0134] The second deceleration strategy determination module is used to determine the motor speed adjustment strategy as follows if the temperature deviation is within the second deceleration sub-range: control the speed of the indoor unit of the air conditioner to reduce the second speed reduction amount, which is greater than the first speed reduction amount.

[0135] In one embodiment, the airflow control device further includes:

[0136] The response unit is used to respond to the air volume adjustment command for the indoor unit of the air conditioner and determine the motor speed corresponding to the air volume adjustment command;

[0137] The adjustment unit is used to adjust the motor speed according to the motor speed adjustment strategy to obtain the adjusted motor speed;

[0138] Control the motor to operate at the adjusted motor speed.

[0139] As can be seen from the above, in this embodiment of the air conditioner, the indoor unit is equipped with a first temperature sensing component for acquiring the motor temperature and a second temperature sensing component for acquiring the ambient temperature. The airflow control device acquires the rated temperature difference of the indoor unit, which is the difference between the motor temperature and the ambient temperature when the indoor unit is running at a preset speed under rated static pressure. The device controls the motor of the indoor unit to run at a preset speed under the current static pressure. Based on the current motor temperature acquired by the first temperature sensing component and the current ambient temperature acquired by the second temperature sensing component, the device calculates the target temperature difference of the indoor unit under the current static pressure. Based on the difference between the target temperature difference and the rated temperature difference, the device determines the motor speed adjustment strategy of the indoor unit under the current static pressure to control the airflow of the indoor unit to remain constant under different static pressures.

[0140] Based on the difference between the target temperature difference and the rated temperature difference of the indoor unit under the current installation environment, this application embodiment can determine the relationship between the static pressure of the current installation environment and the rated static pressure. This allows for the determination of a motor speed adjustment strategy that makes the air volume output by the indoor unit under the current static pressure similar to that under the rated static pressure. This ensures that the indoor unit can maintain a constant air volume under different static pressures, thus improving the user experience.

[0141] This application embodiment also provides an air conditioner indoor unit, which may include a ducted air conditioner indoor unit, such as... Figure 3 As shown, it illustrates a structural schematic diagram of the indoor unit of an air conditioner involved in an embodiment of this application. Specifically:

[0142] The indoor unit of this air conditioner may include a motor (also called an internal motor), motor windings, and centrifugal fan blades, etc., and the motor has a built-in first temperature sensing component, while a second temperature sensing component is arranged at the air inlet. Figure 3 The structure of the indoor air conditioner shown does not constitute a limitation on the indoor air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0143] The indoor unit of the air conditioner may also include components such as a processor 1001 with one or more processing cores, a memory 1002 with one or more computer-readable storage media, a power supply 1003, and an input unit 1004. Those skilled in the art will understand that, wherein:

[0144] like Figure 4As shown, the processor 1001 is the control center of the indoor unit of the air conditioner. It connects various parts of the indoor unit through various interfaces and lines. By running or executing software programs and / or modules stored in the memory 1002, and calling data stored in the memory 1002, it performs various functions of the indoor unit and processes data, thereby monitoring the indoor unit as a whole.

[0145] The memory 1002 can be used to store software programs and modules. The processor 1001 executes various functional applications and data processing by running the software programs and modules stored in the memory 1002. The memory 1002 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one computer program required for a function (such as controlling the motor speed of the indoor air conditioner unit, displaying the temperature, etc.), etc.; the data storage area may store data created based on the use of the indoor air conditioner unit, etc. In addition, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 1002 may also include a memory controller to provide the processor 1001 with access to the memory 1002.

[0146] The indoor unit of the air conditioner also includes a power supply 1003 that supplies power to various components. Preferably, the power supply 1003 can be logically connected to the processor 1001 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 1003 may also include one or more DC or AC power supplies, a recharging system, a power fault detection circuit, a power converter or inverter, a power status indicator, or any other components.

[0147] The indoor unit of the air conditioner may also include an input unit 1004, which can be used to receive input digital or character information, and generate remote control or terminal device input related to user settings and function control.

[0148] Although not shown, the indoor unit of the air conditioner may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 1001 in the indoor unit of the air conditioner will load the executable files corresponding to the processes of one or more computer programs into the memory 1002 according to the following instructions, and the processor 1001 will run the computer programs stored in the memory 1002 to realize various functions, as follows:

[0149] Obtain the rated temperature difference of the indoor unit of the air conditioner. The rated temperature difference is the difference between the motor temperature and the ambient temperature when the indoor unit of the air conditioner is running at a preset speed under rated static pressure.

[0150] Control the motor of the indoor unit of the air conditioner to run at a preset speed under the current static pressure;

[0151] Based on the current motor temperature obtained by the first temperature sensing component and the current ambient temperature obtained by the second temperature sensing component, calculate the target temperature difference of the indoor unit of the air conditioner under the current static pressure.

[0152] Based on the difference between the target temperature difference and the rated temperature difference, determine the motor speed adjustment strategy of the indoor unit of the air conditioner under the current static pressure, so as to control the air volume of the indoor unit of the air conditioner to be constant under different static pressures.

[0153] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0154] As can be seen from the above, the indoor unit of the air conditioner in this embodiment is equipped with a first temperature sensing component for acquiring the motor temperature and a second temperature sensing component for acquiring the ambient temperature. It can acquire the rated temperature difference of the indoor unit, which is the difference between the motor temperature and the ambient temperature when the indoor unit is running at a preset speed under rated static pressure. It can control the motor of the indoor unit to run at a preset speed under the current static pressure. Based on the current motor temperature acquired by the first temperature sensing component and the current ambient temperature acquired by the second temperature sensing component, it calculates the target temperature difference of the indoor unit under the current static pressure. Based on the difference between the target temperature difference and the rated temperature difference, it determines the motor speed adjustment strategy of the indoor unit under the current static pressure to control the airflow of the indoor unit to remain constant under different static pressures.

[0155] Based on the difference between the target temperature difference and the rated temperature difference of the indoor unit under the current installation environment, this application embodiment can determine the relationship between the static pressure of the current installation environment and the rated static pressure. This allows for the determination of a motor speed adjustment strategy that makes the air volume output by the indoor unit under the current static pressure similar to that under the rated static pressure. This ensures that the indoor unit can maintain a constant air volume under different static pressures, thus improving the user experience.

[0156] According to one aspect of this application, a computer program product or computer program is provided, comprising computer instructions stored in a computer-readable storage medium. A processor of an indoor air conditioner unit reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the indoor air conditioner unit to perform the methods provided in the various optional implementations of the above embodiments.

[0157] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by a computer program, or by a computer program controlling related hardware. The computer program can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0158] Therefore, embodiments of this application provide a computer-readable storage medium storing a computer program that can be loaded by a processor to execute any of the airflow control methods provided in embodiments of this application.

[0159] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0160] The computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0161] Since the computer program stored in the computer-readable storage medium can execute any of the air volume control methods provided in the embodiments of this application, the beneficial effects that any of the air volume control methods provided in the embodiments of this application can achieve can be realized. For details, please refer to the previous embodiments, which will not be repeated here.

[0162] The above provides a detailed description of an airflow control method, device, air conditioner indoor unit, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for controlling air volume, characterized in that, The method, applied to an indoor unit of an air conditioner, wherein the indoor unit is equipped with a first temperature-sensing component for acquiring motor temperature and a second temperature-sensing component for acquiring ambient temperature, includes: The rated temperature difference of the indoor unit of the air conditioner is obtained. The rated temperature difference is the difference between the motor temperature and the ambient temperature when the indoor unit of the air conditioner is running at a preset speed under rated static pressure. The motor of the indoor unit of the air conditioner is controlled to run at the preset speed under the current static pressure; The target temperature difference of the indoor unit of the air conditioner under the current static pressure is calculated based on the current motor temperature obtained by the first temperature sensing component and the current ambient temperature obtained by the second temperature sensing component. Based on the difference between the target temperature difference and the rated temperature difference, a motor speed adjustment strategy for the indoor unit of the air conditioner under the current static pressure is determined. This includes calculating the temperature deviation between the target temperature difference and the rated temperature difference; if the temperature deviation is within the speed maintenance range, the motor speed adjustment strategy is determined to maintain the motor speed of the indoor unit; if the temperature deviation is within the acceleration range, the motor speed adjustment strategy is determined to increase the motor speed, where any value in the acceleration range is greater than any value in the speed maintenance range; if the temperature deviation is within the deceleration range, the motor speed adjustment strategy is determined to decrease the motor speed, where any value in the deceleration range is less than any value in the speed maintenance range; this is to control the airflow of the indoor unit of the air conditioner to remain constant under different static pressures.

2. The method according to claim 1, characterized in that, The acceleration range includes a first acceleration sub-range and a second acceleration sub-range. Any value in the first acceleration sub-range is greater than a value in the second acceleration sub-range. If the temperature deviation is within the acceleration range, the motor speed adjustment strategy is determined to be increasing the motor speed, including: If the temperature deviation is within the first acceleration sub-range, then the motor speed adjustment strategy is determined to be to control the motor speed to increase the first speed increment; If the temperature deviation is within the second acceleration sub-range, then the motor speed adjustment strategy is determined to be to control the motor speed to increase the second speed increment, where the second speed increment is greater than the first speed increment.

3. The method according to claim 1, characterized in that, The deceleration range includes a first deceleration sub-range and a second deceleration sub-range. Any value in the first deceleration sub-range is greater than a value in the second deceleration sub-range. If the temperature deviation is within the deceleration range, the motor speed adjustment strategy is determined to be reducing the motor speed, including: If the temperature deviation is within the first deceleration sub-range, then the motor speed adjustment strategy is determined to control the motor speed to decrease by a first speed reduction. If the temperature deviation is within the second deceleration sub-range, then the motor speed adjustment strategy is determined to control the speed of the indoor unit of the air conditioner to decrease by a second speed reduction, where the second speed reduction is greater than the first speed reduction.

4. The method according to claim 1, characterized in that, After determining the motor speed adjustment strategy of the indoor unit of the air conditioner under the current static pressure based on the difference between the target temperature difference and the rated temperature difference, the method further includes: In response to the airflow adjustment command for the indoor unit of the air conditioner, the motor speed corresponding to the airflow adjustment command is determined; The motor speed is adjusted according to the motor speed adjustment strategy to obtain the adjusted motor speed; The motor is controlled to operate at the adjusted motor speed.

5. The method according to any one of claims 1-4, characterized in that, The step of obtaining the rated temperature difference of the indoor unit of the air conditioner includes: In response to a constant airflow control command for a target fan speed, a preset rotation speed corresponding to the target fan speed is determined; Obtain the rated temperature difference of the indoor unit of the air conditioner when it is running at the preset speed under rated static pressure.

6. The method according to any one of claims 1-4, characterized in that, The indoor unit of the air conditioner is equipped with a photosensitive component, and the step of obtaining the rated temperature difference of the indoor unit of the air conditioner includes: The ambient brightness of the installation environment of the indoor unit of the air conditioner is collected by the photosensitive component; If the ambient brightness changes, the rated temperature difference of the indoor unit of the air conditioner is obtained.

7. An airflow control device, characterized in that, For use in an indoor unit of an air conditioner, the indoor unit is equipped with a first temperature sensing component for acquiring motor temperature and a second temperature sensing component for acquiring ambient temperature, the device comprising: The acquisition unit is used to acquire the rated temperature difference of the indoor unit of the air conditioner, wherein the rated temperature difference is the difference between the motor temperature and the ambient temperature when the indoor unit of the air conditioner is running at a preset speed under rated static pressure. The control unit is used to control the motor of the indoor unit of the air conditioner to run at the preset speed under the current static pressure; The calculation unit is used to calculate the target temperature difference of the indoor unit of the air conditioner under the current static pressure based on the current motor temperature obtained by the first temperature sensing component and the current ambient temperature obtained by the second temperature sensing component. The strategy determination unit is used to determine the motor speed adjustment strategy of the indoor unit of the air conditioner under the current static pressure based on the difference between the target temperature difference and the rated temperature difference. This includes calculating the temperature deviation between the target temperature difference and the rated temperature difference; if the temperature deviation is within the speed maintenance range, then the motor speed adjustment strategy is determined to maintain the motor speed of the indoor unit of the air conditioner; if the temperature deviation is within the acceleration range, then the motor speed adjustment strategy is determined to increase the motor speed, where any value in the acceleration range is greater than any value in the speed maintenance range; if the temperature deviation is within the deceleration range, then the motor speed adjustment strategy is determined to decrease the motor speed, where any value in the deceleration range is less than any value in the speed maintenance range; thereby controlling the airflow of the indoor unit of the air conditioner to remain constant under different static pressures.

8. An indoor unit for an air conditioner, characterized in that, It includes a memory and a processor; the memory stores a computer program, and the processor is used to run the computer program in the memory to perform the airflow control method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, which is loaded by a processor to perform the airflow control method according to any one of claims 1 to 6.

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