Methods, devices and systems for air volume regulation in multi-story buildings

Abstract

This application discloses a method, device, and system for adjusting airflow in multi-story buildings. The method includes: acquiring current operating data of a target range hood; sending the current operating data and floor information of the target range hood to a cloud server, so that the cloud server determines the target operating data of the target range hood based on the current operating data and floor information; receiving the target operating data sent by the cloud server; adjusting the current rotation speed of the electric air supply valve based on the target rotation speed of the electric air supply valve, and acquiring an updated second pressure value; if the updated second pressure value is within a preset range, determining the actual airflow of the target range hood based on the first pressure value; and adjusting the current rotation speed based on the target rotation speed of the fan until the actual airflow is within a preset airflow range. The method of this application can efficiently and dynamically adjust the airflow to achieve constant pressure and constant airflow operation of the range hood.

Description

Technical Field

[0001] This application belongs to the field of smart home appliances, and in particular relates to a method, device and system for regulating air volume in multi-story buildings. Background Technology

[0002] To maintain the overall appearance of the building, many high-rise residential buildings often use a shared flue for centralized smoke extraction. The exhaust vents of each household's range hood are connected to the shared flue to discharge cooking fumes. In addition, outdoor exhaust fans are usually installed on the top floor of the building to expel the cooking fumes from the shared flue to the outside.

[0003] However, on the one hand, each household's range hood operates at a fixed speed, requiring manual adjustment. If this adjustment is not made in time, it will obstruct the exhaust of kitchen fumes, preventing them from being smoothly discharged into the shared ventilation duct and potentially causing fumes from the shared duct to flow back into the kitchen. On the other hand, traditional solutions use accelerated fresh air systems to compensate for the negative pressure created by the range hood's operation, but this results in higher overall energy consumption.

[0004] Therefore, how to efficiently and dynamically adjust the air volume to achieve constant pressure and constant air volume operation of the range hood is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a method, device, and system for regulating air volume in multi-story buildings, which can efficiently and dynamically regulate air volume to achieve constant pressure and constant air volume operation of the range hood.

[0006] On one hand, embodiments of this application provide a method for regulating airflow in multi-story buildings, the method comprising:

[0007] Obtain the current operating data of the target range hood; the current operating data includes the current speed of the fan, the first pressure value detected at the electric check valve, and the second pressure value detected at the electric air supply valve;

[0008] The current operating data and the floor information of the target range hood are sent to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information; the target operating data includes the target air volume and the target operating data; the target operating data includes the target speed of the fan and the target speed of the electric air supply valve;

[0009] Receive the target working data sent by the cloud server;

[0010] Based on the target rotation speed of the electric air supply valve, the current rotation speed of the electric air supply valve is adjusted, and an updated second pressure value is obtained; the updated second pressure value is the second pressure value detected by the electric air supply valve at the current rotation speed.

[0011] If the updated second pressure value is within a preset range, the actual air volume of the target range hood is determined based on the first pressure value;

[0012] Based on the target rotational speed of the fan, the current rotational speed of the fan is adjusted until the actual air volume is within a preset air volume range; the preset air volume range is determined based on the target air volume.

[0013] In one exemplary embodiment, adjusting the current rotational speed of the electric air supply valve based on its target rotational speed and obtaining an updated second pressure value includes:

[0014] A first pulse width modulation ratio and a second pulse width modulation ratio are determined based on the target rotation speed of the electric air supply valve. The first pulse width modulation ratio is used to adjust the current rotation speed of the electric air supply valve, and the second pulse width modulation ratio is used to adjust the current rotation speed of the fan.

[0015] When the second pressure value is less than the minimum value within the preset range, the current rotation speed of the electric air supply valve is increased by the first pulse width modulation ratio so that the updated second pressure value is within the preset range.

[0016] When the second pressure value is greater than the maximum value of the preset range, the current speed of the electric air supply valve is reduced by the first pulse width modulation ratio, and the current speed of the fan is increased by the second pulse width modulation ratio, so that the updated second pressure value is within the preset range.

[0017] In one exemplary embodiment, after the updated second pressure value falls within the preset range, the method further includes:

[0018] The second pressure value is acquired periodically at preset time intervals;

[0019] When the second pressure value is not within the preset range, the real-time operating data of the target range hood is acquired; and the real-time operating data is used as the current operating data again, and the process jumps to the step of sending the current operating data and the floor information of the target range hood to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information.

[0020] In one exemplary embodiment, adjusting the current rotational speed of the fan based on the target rotational speed of the fan until the actual airflow is within a preset airflow range includes:

[0021] The third pulse width modulation ratio is determined based on the target rotational speed of the fan.

[0022] The current speed of the fan is adjusted by the third pulse width modulation ratio;

[0023] Obtain the first pressure value corresponding to the current speed of the fan to get the current first pressure value;

[0024] Calculate the current actual air volume based on the current first pressure value;

[0025] Determine whether the current actual air volume is within the preset air volume range;

[0026] If the judgment result indicates that the current actual air volume is within the preset air volume range, the current speed of the fan is taken as the target operating speed of the fan;

[0027] The fan of the target range hood is controlled to operate at the target operating speed.

[0028] In one exemplary embodiment, the target operating data further includes the target opening and closing angle of the electric check valve, and the method further includes:

[0029] After adjusting the current speed of the fan by the third pulse width modulation ratio, if the judgment result indicates that the current actual air volume is not within the preset air volume range, the current opening and closing angle of the electric check valve is adjusted to the target opening and closing angle.

[0030] In one exemplary embodiment, the method further includes:

[0031] Based on the floor information of the target range hood, determine whether the electric check valve of the target range hood has an angle adjustment function;

[0032] When the electric check valve does not have an angle adjustment function, determine the relationship between the actual air volume and the target air volume;

[0033] When the actual air volume is greater than the target air volume, the electric check valve is controlled to perform a closing operation;

[0034] When the actual air volume is less than the target air volume, the electric check valve is controlled to open.

[0035] In one exemplary embodiment, there are multiple target range hoods, and the air outlets of the target range hoods are connected to a common flue, which further includes an outdoor exhaust fan; the method further includes:

[0036] Obtain the current rotational speed of the outdoor smoke exhaust fan;

[0037] The system receives the target rotation speed of the outdoor exhaust fan sent by the cloud server; the target rotation speed is determined by the cloud server based on the operating rate in the public flue, the actual air volume corresponding to multiple target exhaust fans, and the target air volume; the operating rate is determined by the cloud server based on the operating status information corresponding to multiple target exhaust fans.

[0038] When the current speed of the outdoor smoke exhaust fan is not equal to the target speed of the outdoor smoke exhaust fan, the current speed of the outdoor smoke exhaust fan is adjusted according to a preset step until it is equal to the target speed of the outdoor smoke exhaust fan.

[0039] On the other hand, this application also provides an airflow regulating device for multi-story buildings, the device comprising:

[0040] The acquisition module is used to acquire the current operating data of the target range hood; the current operating data includes the current speed of the fan, the first pressure value detected at the electric check valve, and the second pressure value detected at the electric air supply valve;

[0041] The sending module is used to send the current operating data and the floor information of the target range hood to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information; the target operating data includes the target air volume and the target operating data; the target operating data includes the target speed of the fan and the target speed of the electric air supply valve;

[0042] A receiving module is used to receive the target working data sent by the cloud server;

[0043] An electric air supply valve adjustment module is used to adjust the current rotation speed of the electric air supply valve based on the target rotation speed of the electric air supply valve, and to obtain an updated second pressure value; the updated second pressure value is the second pressure value detected by the electric air supply valve at the current rotation speed.

[0044] The actual air volume determination module is used to determine the actual air volume of the target range hood based on the first pressure value if the updated second pressure value is within a preset range.

[0045] The fan adjustment module is used to adjust the current speed of the fan based on the target speed of the fan until the actual air volume is within a preset air volume range; the preset air volume range is determined based on the target air volume.

[0046] On the other hand, this application also provides an airflow regulation system for multi-story buildings, the system comprising: a target range hood and a cloud server; there are multiple target range hoods, and the target range hoods are communicatively connected to the cloud server; the air outlet of each target range hood is connected to a common flue through an indoor exhaust pipe; an electric check valve is provided at the outlet of the indoor exhaust branch pipe; each target range hood further comprises a fan, an electric make-up air valve, and a controller; the controller is used to regulate the airflow of the target range hood according to the airflow regulation method for multi-story buildings described above.

[0047] On the other hand, this application also provides an electronic device, the device including a processor and a memory, the memory storing at least one instruction or at least one program, the at least one instruction or the at least one program being loaded and executed by the processor to implement the airflow regulation method for multi-story buildings as described above.

[0048] On the other hand, this application also provides a computer storage medium storing at least one instruction or at least one program, which is loaded and executed by a processor to implement the airflow regulation method for multi-story buildings as described above.

[0049] On the other hand, this application also provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the airflow regulation method for multi-story buildings as described above.

[0050] The air volume regulation method for multi-story buildings provided in this application has the following technical effects:

[0051] This application embodiment utilizes a cloud server as a central hub for airflow regulation, enabling coordinated control of multiple target range hoods within a shared ventilation duct. By receiving target operating data from the cloud server, this application dynamically adjusts current operating data, efficiently regulating airflow to achieve constant pressure and airflow operation of the range hoods. On one hand, by dynamically adjusting the speed of the electric air supply valve, this application maintains indoor and outdoor pressure balance while preventing disruption of indoor temperature balance, thus preventing condensation or dew accumulation caused by excessive temperature differences. On the other hand, by dynamically adjusting the fan speed, it achieves constant airflow operation of the range hoods, ensuring smooth smoke extraction and preventing backflow of fumes. The method of this application embodiment utilizes a cloud server to dynamically calculate the target operating data for each target range hood in the shared ventilation duct and distributes it to the target range hoods. This allows the target range hoods on different floors to intelligently adjust the fan speed and electric air supply valve speed based on the target operating data, achieving constant pressure and airflow operation. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0053] Figure 1 This is an application environment diagram of the air volume regulation method for multi-story buildings provided in the embodiments of this application.

[0054] Figure 2 This is a schematic flowchart of an airflow regulation method for multi-story buildings provided in an embodiment of this application.

[0055] Figure 3 This is a schematic diagram of the process for adjusting the second pressure value provided in an embodiment of this application.

[0056] Figure 4 This is a schematic diagram of the process for adjusting air volume provided in the embodiments of this application.

[0057] Figure 5 This is a schematic diagram of the process for adjusting the wind speed of an outdoor smoke exhaust fan according to an embodiment of this application.

[0058] Figure 6 This is a flowchart illustrating the method for adjusting the airflow of a target range hood in a control room, as provided in an embodiment of this application.

[0059] Figure 7 This is a flowchart illustrating the method for adjusting the airflow of an outdoor smoke exhaust fan according to an embodiment of this application.

[0060] Figure 8 This is a device architecture diagram of the indoor target range hood provided in the embodiments of this application.

[0061] Figure 9 This is a diagram of the equipment architecture of the outdoor smoke exhaust fan provided in the embodiments of this application.

[0062] Figure 10 This is a schematic diagram of the structure of an air volume regulating device for multi-story buildings provided in an embodiment of this application.

[0063] Figure 11 This is a hardware structure block diagram of a server for an airflow regulation method for multi-story buildings, as provided in an embodiment of this application. Detailed Implementation

[0064] 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 of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0065] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0066] Figure 1 This is an application environment diagram of the air volume regulation method for multi-story buildings provided in the embodiments of this application.

[0067] like Figure 1As shown, multiple target range hoods are installed in the multi-story building, such as target range hood 1, target range hood 2, etc. The air outlet of each target range hood is connected to the common flue 5 via an indoor exhaust pipe. Each target range hood includes an electric check valve, a fan, an electric make-up air valve, and a controller. The controller is used to adjust the airflow of the target range hood. The electric check valve prevents fumes from flowing back into the kitchen from the common flue or other exhaust pipes. The fan draws fumes from the kitchen into the indoor exhaust pipe, from which they are then discharged through the common flue. The electric make-up air valve adjusts the airflow to provide supplemental air to the kitchen, thereby balancing the atmospheric pressure between the kitchen and the outside. Figure 1 As shown, the target range hood 1 is equipped with an electric check valve 21 at the exhaust branch pipe outlet in the indoor unit, and the target range hood 2 is equipped with an electric check valve 22 at the exhaust branch pipe outlet in the indoor unit; the target range hood 1 also includes a fan 11 and an electric make-up air valve 31, and the target range hood 2 also includes a fan 12 and an electric make-up air valve 32.

[0068] An outdoor exhaust fan 4 is also connected to the outlet of the public flue 5. The outdoor exhaust fan 4 is used to exhaust the fumes in the public flue 5 to the outside. The outdoor exhaust fan 4 is usually installed on the top floor of a multi-story building. By adjusting the air volume, it helps to balance the flue pressure between floors and prevent the backflow of fumes.

[0069] It should be noted that in the embodiments of this application, both the target range hood and the outdoor exhaust fan are connected to the cloud server. The method of this application uses the cloud server to coordinate and control the target range hood and the outdoor exhaust fan, and efficiently and dynamically adjusts the air volume to achieve constant pressure and constant air volume operation of the range hood.

[0070] Figure 2 This is a schematic flowchart of an airflow regulation method for multi-story buildings provided in an embodiment of this application.

[0071] S201: Obtain the current operating data of the target range hood; the current operating data includes the current speed of the fan, the first pressure value detected at the electric check valve, and the second pressure value detected at the electric air supply valve;

[0072] The first pressure value can be understood as the duct pressure at the floor where the target range hood is located. This first pressure value can be obtained through a pressure sensor at the electric check valve. The second pressure value can be understood as the atmospheric pressure in the kitchen where the target range hood is located. This second pressure value can be obtained through a pressure sensor at the electric air supply valve.

[0073] S203: The current operating data and the floor information of the target range hood are sent to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information; the target operating data includes the target air volume and the target operating data; the target operating data includes the target speed of the fan and the target speed of the electric air supply valve;

[0074] The cloud server communicates with the target range hood. Specifically, a communication connection can be established through a communication module. In one example, the communication module can be a CAT1 (LTE UE-Category 1) module with an uplink peak rate of 5 Mbit / s and a downlink peak rate of 10 Mbit / s, enabling the target range hood to quickly and efficiently transmit the collected data to the cloud server. The communication latency is low, reaching millisecond levels, allowing for real-time or near-real-time data transmission, and ensuring stable communication control performance. It should be noted that the communication module can also be in other forms, such as NB-IoT modules, 2G modules, 3G modules, and 4G modules. With technological advancements, communication modules can also include 5G modules, 6G modules, and other modules. This application does not limit the communication module. Alternatively, far-field communication technologies such as LoRa and near-field communication technologies such as WiFi, BLE, and ZigBee can also be used to establish a communication connection with the cloud server.

[0075] It should be noted that in multi-story buildings, there are multiple target range hoods, each marked with its floor information within the shared ventilation duct, thus allowing for location identification of each target range hood within the duct. All target range hoods within the shared ventilation duct can be scanned, edited, added, and bound with soft-coded information via a client application, enabling them to connect to the cloud server. The client application can be in the form of an application or a mini-program.

[0076] The cloud server has a pre-set total number of target range hoods corresponding to the public exhaust duct and a first number of target range hoods that are currently powered on. By calculating the ratio between the first number and the total number, and using this ratio as the operating rate for the public exhaust duct, the cloud server comprehensively calculates the target air volume of the target range hood based on the operating rate, the floor where the target range hood is located, the fan speed of the target range hood, and the speed of the electric make-up air valve, denoted as Q. 目标 Specifically, the cloud server determines the target airflow of the range hood based on current operating data and floor information using the following calculation formula:

[0077] Q 目标 =f(x,y,z,t)*Q0

[0078] Among them, Q 目标Let x be the target air volume, y be the overall operating rate of the flue, z be the fan speed of the target range hood, t be the speed of the electric make-up air valve, and Q0 be the initial air volume of the common flue.

[0079] S205: Receive the target working data sent by the cloud server;

[0080] The cloud server sends the calculated target operating data to the communication module of the target range hood. The communication module then sends the target operating data to the controller of the target range hood via a serial port to control the speed or opening angle of components such as the fan, electric check valve, and electric air supply valve. In one example, the controller can be the power board of the target range hood.

[0081] S207: Based on the target rotation speed of the electric air supply valve, adjust the current rotation speed of the electric air supply valve and obtain an updated second pressure value; the updated second pressure value is the second pressure value detected by the electric air supply valve at the current rotation speed;

[0082] Since the second pressure value changes and updates as the speed of the electric air supply valve is adjusted, the changing second pressure value, denoted as W, is obtained in real time during the adjustment of the electric air supply valve speed. 检测 The system then determines whether the second pressure value is within a preset range. The preset range is [ξ-ω, ξ+ω]. Here, ξ is the pressure value corresponding to one atmosphere, ω is the amount that can fluctuate above or below ξ, and ω is a preset constant.

[0083] When the updated second pressure value is within the preset range, it can be considered that the indoor and outdoor pressures have reached equilibrium. In this application, the indoor and outdoor pressures are balanced by adjusting the speed of the electric air supply valve, thus preventing the indoor temperature balance from being disrupted and effectively preventing condensation or dew caused by excessive indoor and outdoor temperature differences.

[0084] S209: If the updated second pressure value is within a preset range, determine the actual air volume of the target range hood based on the first pressure value;

[0085] The calculation formula for determining the actual air volume of the target range hood based on the first pressure value is as follows:

[0086] Q 实测 =(ap 2 +bp+c)*Q0

[0087] Among them, Q 实测 ρ is the actual air volume, p is the first pressure value, Q0 is the initial air volume, and a, b, and c are constants.

[0088] S211: Based on the target speed of the fan, adjust the current speed of the fan until the actual air volume is within a preset air volume range; the preset air volume range is determined based on the target air volume.

[0089] Since the initial pressure value changes with the fan speed, and consequently the actual airflow also changes, the process involves acquiring the initial pressure value in real time and calculating the actual airflow during fan speed adjustment to determine if the actual airflow falls within the preset airflow range. It should be noted that the preset airflow range is determined based on the target airflow calculated by the cloud server. Specifically, the preset airflow range can be [Q...]. 目标 -σ, Q 目标 +σ]. Where Q 目标 Let Q be the target air volume, and σ be the air volume in Q. 目标 The value can fluctuate up or down based on the preset air volume, where σ is a constant and can be a very small value. When the actual air volume is within the preset air volume range, it can be considered that the actual air volume has reached the target air volume, and the fan of the target range hood will run at the current speed.

[0090] This application embodiment utilizes a cloud server as a central hub for airflow regulation, enabling coordinated control of multiple target range hoods within a shared ventilation duct. By receiving target operating data from the cloud server, this application dynamically adjusts current operating data, efficiently regulating airflow to achieve constant pressure and airflow operation of the range hoods. On one hand, by dynamically adjusting the speed of the electric air supply valve, this application maintains indoor and outdoor pressure balance while preventing disruption of indoor temperature balance, thus preventing condensation or dew accumulation caused by excessive temperature differences. On the other hand, by dynamically adjusting the fan speed, it achieves constant airflow operation of the range hoods, ensuring smooth smoke extraction and preventing backflow of fumes. The method of this application embodiment utilizes a cloud server to dynamically calculate the target operating data for each target range hood in the shared ventilation duct and distributes it to the target range hoods. This allows the target range hoods on different floors to intelligently adjust the fan speed and electric air supply valve speed based on the target operating data, achieving constant pressure and airflow operation.

[0091] Figure 3 This is a schematic diagram of the process for adjusting the second pressure value provided in an embodiment of this application. Figure 3 This can be seen as a specific example of step S207. The step of adjusting the current rotational speed of the electric air supply valve based on its target rotational speed and obtaining the updated second pressure value includes:

[0092] S301: Determine a first pulse width modulation ratio and a second pulse width modulation ratio based on the target rotational speed of the electric air supply valve. The first pulse width modulation ratio is used to adjust the current rotational speed of the electric air supply valve, and the second pulse width modulation ratio is used to adjust the current rotational speed of the fan.

[0093] Motor speed adjustment can be achieved using pulse-width modulation (PWM) technology, which modulates the width of pulses to obtain the desired waveform for motor control. The PWM ratio can be understood as the duty cycle, i.e., the proportion of the pulse width time to the total cycle time. For example, if the total cycle time is 10ms and the pulse width time is 8ms, then the low-level time is 2ms, the duty cycle is 80%, and the resulting signal is a pulse signal with an 80% duty cycle. Different duty cycles of pulse signals can change the motor speed. Therefore, after obtaining the target speed of the electric air supply valve, the first step is to determine the first PWM ratio used to adjust its speed. It should be noted that when the second pressure value exceeds the maximum value within the preset range, a second PWM ratio can also be determined based on the target speed of the electric air supply valve to adjust the fan speed.

[0094] S303: When the second pressure value is less than the minimum value within the preset range, the current rotation speed of the electric air supply valve is increased by the first pulse width modulation ratio so that the updated second pressure value is within the preset range;

[0095] Specifically, the preset range is [ξ-ω, ξ+ω]. If the second pressure value is less than ξ-ω, it indicates that the kitchen is in a negative pressure state at the current moment. According to the first pulse width modulation ratio, the current speed of the electric air supply valve is increased, thereby increasing the air volume of the electric air supply valve per unit time, which increases the pressure of the kitchen environment.

[0096] In one implementation, the current rotational speed of the electric air supply valve is increased according to the first pulse width modulation ratio. This process can be multi-stage. For example, assuming that before adjustment, the pulse width modulation ratio corresponding to the current rotational speed of the electric air supply valve is 40%, and the first pulse width modulation ratio is 80%, the adjustment process can be to first adjust to the rotational speed corresponding to the pulse width modulation ratio of 50%, and then gradually increase it to 80%, so that the indoor pressure can transition evenly. In another implementation, the pulse signal corresponding to the first pulse width modulation ratio can also directly drive the electric air supply valve, so that the current rotational speed of the electric air supply valve is equal to the target rotational speed of the electric air supply valve.

[0097] S305: When the second pressure value is greater than the maximum value of the preset range, the current speed of the electric air supply valve is reduced by the first pulse width modulation ratio, and the current speed of the fan is increased by the second pulse width modulation ratio, so that the updated second pressure value is within the preset range.

[0098] If the second pressure value is greater than ξ+ω, it indicates that the kitchen is currently under positive pressure. Based on the first pulse width modulation ratio, the current speed of the electric air supply valve is reduced, thereby reducing the airflow per unit time and decreasing the pressure inside the kitchen. Simultaneously, based on the second pulse width modulation ratio, the speed of the target range hood's fan is increased, quickly achieving indoor and outdoor pressure balance.

[0099] In one embodiment, after the updated second pressure value falls within the preset range, the method further includes: periodically acquiring the second pressure value at preset time intervals; when the second pressure value is not within the preset range, acquiring real-time operating data of the target range hood; and using the real-time operating data as the current operating data, then proceeding to the step of sending the current operating data and the floor information of the target range hood to a cloud server, so that the cloud server determines the target operating data of the target range hood based on the current operating data and the floor information.

[0100] This embodiment queries the second pressure value W at fixed time intervals. 检测 The second pressure value reflects whether the kitchen environment is under negative or positive pressure, and adjusts the speed of the electric air supply valve and fan in real time to supply air to the kitchen in a timely manner. This can quickly achieve the effect of indoor and outdoor pressure balance and avoid condensation or dew caused by large indoor pressure differences.

[0101] Figure 4 This is a schematic diagram of the process for adjusting air volume provided in the embodiments of this application. Figure 4 This can be seen as a specific example of step S211. Adjusting the current speed of the fan based on the target speed of the fan until the actual airflow is within a preset airflow range includes:

[0102] S401: Determine the third pulse width modulation ratio based on the target rotational speed of the fan;

[0103] The third pulse width modulation ratio is used to adjust the current speed of the fan so that the actual air volume is within the preset air volume range.

[0104] S403: Adjust the current speed of the fan by the third pulse width modulation ratio;

[0105] The preset airflow range is [Q] 目标 -σ, Q 目标 +σ], if Q 实测 Less than Q 目标When -σ is reached, it indicates that the current airflow is insufficient, and the fumes in the public exhaust duct are prone to backflow into the kitchen, requiring an increase in the current fan speed. In this embodiment, the current fan speed is increased according to the third pulse width modulation ratio, thereby increasing the fan's airflow per unit time and accelerating the emission of fumes to prevent backflow.

[0106] If Q 实测 Greater than Q 目标 When +σ is applied, it indicates that the current airflow is too high, and the current fan speed needs to be reduced. In this embodiment, the current fan speed is reduced according to the third pulse width modulation ratio, thereby reducing the airflow per unit time, slowing down the emission of oil fumes, reducing energy consumption while ensuring normal emission of oil fumes, improving the working efficiency of the target oil fume extractor, and enabling the target oil fume extractor to operate efficiently.

[0107] S405: Obtain the first pressure value corresponding to the current speed of the fan, and get the current first pressure value;

[0108] Since the first pressure value changes when the fan speed is adjusted, the actual air volume also changes accordingly. Therefore, during the adjustment of the fan speed, the first pressure value of the fan at the current speed is obtained in real time, and the current first pressure value can be obtained from the current first pressure value. The current actual air volume can then be obtained from the current first pressure value.

[0109] S 407: Calculate the current actual air volume based on the current first pressure value;

[0110] The calculation process for the current actual air volume is similar to that in step S211, and will not be repeated here.

[0111] S409: Determine whether the current actual air volume is within the preset air volume range;

[0112] In this embodiment of the application, adjusting the fan speed using the third pulse width modulation ratio can be regarded as a multi-stage process. For example, before adjustment, the pulse width modulation ratio corresponding to the fan speed is 80%, while the third pulse width modulation ratio is 30%. After adjustment in step S403, the pulse width modulation ratio corresponding to the current fan speed is 50%. Then, the current actual air volume is calculated again, and the relationship between the current actual air volume obtained after adjustment and the preset air volume range is determined, thereby achieving accurate adjustment in stages.

[0113] S411: If the judgment result indicates that the current actual air volume is within the preset air volume range, the current speed of the fan is taken as the target operating speed of the fan;

[0114] When the current actual air volume is within the preset air volume range, it indicates that the fan can maintain normal oil fume emission and the target range hood is operating efficiently at the current speed. The current speed of the fan is taken as the target operating speed of the fan.

[0115] S413: Control the fan of the target range hood to operate at the target operating speed.

[0116] In one embodiment, the target operating data further includes the target opening and closing angle of the electric check valve, and the method provided in this application embodiment further includes:

[0117] After adjusting the current speed of the fan by the third pulse width modulation ratio, if the judgment result indicates that the current actual air volume is not within the preset air volume range, the current opening and closing angle of the electric check valve is adjusted to the target opening and closing angle.

[0118] Specifically, after adjusting the current speed of the fan through the third pulse width modulation ratio, the current actual air volume Q is recalculated. 实测 If Q 实测 Less than Q 目标 When -σ, it indicates that adjusting the fan cannot increase the actual air volume to Q. 目标 -σ, at this point, the opening angle of the electric check valve is increased to the target opening angle, thereby accelerating the emission of indoor fumes; if Q 实测 Greater than Q 目标 When +σ, it indicates that the regulating fan cannot be reduced to Q. 目标 +σ, then adjust the opening angle of the electric check valve to the target opening angle to reduce the emission of indoor oil fumes.

[0119] It should be noted that before adjusting the opening and closing angle of the electric check valve, it is first necessary to determine whether the electric check valve of the target range hood has an angle adjustment function based on the floor information of the target range hood. Since the flue pressure is higher on lower floors in the public flue, in this embodiment, for the n target range hoods on lower floors, only the on / off function of the electric check valve is activated, i.e., either the 0° closed state angle or the 90° open state angle, without activating the angle adjustment function. Here, n can be determined based on the total number of floors N in the multi-story building. For example, the ratio of n to N can be 20%, but this value is only an example.

[0120] When the electric check valve does not have an angle adjustment function, the relationship between the actual air volume and the target air volume is determined; when the actual air volume is greater than the target air volume, the electric check valve is controlled to perform a closing operation; that is, if Q 实测 Greater than Q 目标+σ, at this time the target opening angle of the electric check valve can be regarded as 0°; when the actual air volume is less than the target air volume, the electric check valve is controlled to perform an opening operation, that is, if Q 实测 Less than Q 目标 -σ, the target opening and closing angle of the electric check valve can be regarded as 90°.

[0121] By differentiating between high and low floors, low floors only control the opening and closing of the electric check valve, while high floors control and adjust the opening and closing angle of the electric check valve, thus making the air volume adjustment more accurate and stable, which is conducive to the smooth exhaust of smoke in the public flue.

[0122] Meanwhile, the wind speed of the outdoor smoke exhaust fan is also uniformly adjusted through the cloud server. Figure 5 This is a schematic diagram illustrating the process of adjusting the wind speed of an outdoor exhaust fan according to an embodiment of this application. In a multi-story building, there are multiple target range hoods, and the air outlets of the target range hoods are connected to a common flue, which also includes the outdoor exhaust fan.

[0123] S501: Obtain the current rotation speed of the outdoor smoke exhaust fan;

[0124] The current rotational speed of the outdoor smoke exhaust fan can be obtained by measuring and collecting the wind speed sensor built into the outdoor smoke exhaust fan.

[0125] S503: Receive the target rotation speed of the outdoor exhaust fan sent by the cloud server; the target rotation speed is determined by the cloud server based on the operating rate in the public flue, the actual air volume corresponding to multiple target exhaust fans, and the target air volume; the operating rate is determined by the cloud server based on the operating status information corresponding to multiple target exhaust fans;

[0126] The cloud server has a preset total number of target range hoods corresponding to the public exhaust duct and a first number of target range hoods that are currently in operation. In one embodiment, the ratio between the first number and the total number can be calculated and used as the operating rate of the public exhaust duct.

[0127] Specifically, based on the operating rate in the public flue, the actual air volume corresponding to the multiple target range hoods, and the target air volume, the calculation formula for the target rotation speed of the outdoor exhaust fan is as follows:

[0128] r = r0 + r λ

[0129] r λ =∑Q 差值 / Q0=[(Q 1目标 -Q 1实测 )*λ1+...+(Q N目标 -Q N实测 )*λN ] / Q0

[0130]

[0131] Where, r λ This indicates the compensated speed of the outdoor smoke exhaust fan; r0 indicates the auxiliary speed of the outdoor smoke exhaust fan; r indicates the target speed of the outdoor smoke exhaust fan; N indicates the total number of floors in the common smoke duct; Q0 indicates the initial air volume of the common smoke duct; Q 1目标 To Q N目标 Q represents the target airflow of N target range hoods; 1实测 To Q N实测 Represents the actual airflow of N target range hoods; λ1 to λ N This represents the preset weights corresponding to the N target range hoods, with a value range of [0.8, 2.0].

[0132] By introducing the start-up rate, the target speed of the outdoor exhaust fan is determined in a coordinated manner based on the difference between the actual air volume and the target air volume of all target range hoods in the public flue. This makes the air volume adjustment more accurate, promotes the exhaust of fumes in the public flue to the outside, and avoids backflow of fumes.

[0133] It should be noted that the cloud server communicates with the outdoor smoke exhaust fan. Specifically, a communication connection can be established through a communication module. In one example, the communication module can be a CAT1 module. It should be understood that the communication module can also be in other forms, and this application does not limit the type of communication module.

[0134] S505: When the current speed of the outdoor smoke exhaust fan is not equal to the target speed of the outdoor smoke exhaust fan, adjust the current speed of the outdoor smoke exhaust fan according to the preset step until it is equal to the target speed of the outdoor smoke exhaust fan.

[0135] In one embodiment, the cloud server sends the target rotational speed of the outdoor smoke exhaust fan to the communication module of the outdoor smoke exhaust fan, and the communication module then sends the target rotational speed to the power board of the outdoor smoke exhaust fan via a serial port. When it is determined that the current rotational speed of the outdoor smoke exhaust fan is not equal to the target rotational speed, in one example, it can be dynamically adjusted in preset steps of 100 rpm until the actual rotational speed of the outdoor smoke exhaust fan is the same as the target rotational speed, and then the outdoor smoke exhaust fan is controlled to continue running at that rotational speed.

[0136] Figure 6 This is a flowchart illustrating the method for adjusting the airflow of a target range hood in a control room, as provided in an embodiment of this application.

[0137] S601: Turn on the indoor range hood.

[0138] A household range hood can be seen as a specific example of a target range hood. After the household range hood is turned on and running, it actively reports its operating status information to the cloud server. The operating status information of the range hood may include the floor where the range hood is located, the fan speed, the fan speed, the opening and closing angle of the electric check valve, the flue pressure value detected at the electric check valve, the speed of the electric air supply valve, and the air pressure detected at the electric air supply valve.

[0139] The cloud server calculates the target speed of the indoor range hood fan, the target air volume, the target opening and closing angle of the check valve, and the target speed of the make-up air valve based on the operating rate of the public flue and the operating parameters of the indoor range hood, and then sends these parameters to the indoor range hood.

[0140] S602: Get the operating speed of the range hood.

[0141] The operating speed of a range hood is the current speed of its fan.

[0142] S603: Obtain the operating speed of the electric air supply valve and the air pressure W detected at the electric air supply valve. 检测 .

[0143] S604: Determine air pressure W 检测 Is it within the preset range?

[0144] By judging (W) 检测 Whether -ξ) belongs to the interval [-w,w] can determine whether the gas pressure in the kitchen is currently balanced.

[0145] When the gas pressure in the kitchen is unbalanced, adjust the operating speed of the make-up air valve and the operating speed of the range hood fan.

[0146] S605: Determine whether the current floor is greater than (Nn). If the result is yes, proceed to step S606; otherwise, proceed to step S607.

[0147] S606: Controls the opening and closing angle of the check valve.

[0148] S607: Controls the opening / closing function of the check valve.

[0149] S608: Calculate the actual air volume Q 实测 .

[0150] S609: Update the target speed Q of the indoor range hood 内目标 .

[0151] S610: Determine Q 实测 Does it belong to [Q]? 内目标 -σ, Q 内目标 +σ], if Q 实测 Less than (Q) 目标When Q = -σ), prioritize using the range hood's control board to implement PWM control and matching of the fan motor via serial port, and then increase the opening angle of the check valve to accelerate the exhaust of indoor fumes. 实测 Greater than (Q) 目标 When +σ), prioritize using the range hood's control board to implement PWM control and matching of the fan motor via serial port, and then reduce the opening angle of the electric check valve to slow down the emission of indoor fumes.

[0152] Figure 7 This is a flowchart illustrating the method for adjusting the airflow of an outdoor smoke exhaust fan according to an embodiment of this application. Figure 7 It can be seen as Figure 5 A specific example.

[0153] S701: Determine if the power-on rate is less than 10%.

[0154] When the judgment result is yes, r0 = 0 rpm; when the judgment result is no, r0 = 100 rpm.

[0155] S702: Obtain the operating speed of the outdoor smoke exhaust fan, i.e., r 外实测 .

[0156] S703: Determine the compensated speed of the outdoor smoke exhaust fan, i.e., r λ .

[0157] S704: Update the target speed r of the outdoor smoke exhaust fan 外目标 .

[0158] Where, r 外目标 =r0+r λ It should be noted that steps S701 and S703 can be executed by the cloud server to obtain the target rotation speed of the outdoor smoke exhaust fan.

[0159] S705: Determine r 外目标 With r 外实测 Are they equal? ​​If they are equal, the outdoor exhaust fan continues to run at its current speed; if r is equal, the outdoor exhaust fan continues to run at its current speed. 外实测 >=r 外目标 At that time, the outdoor exhaust fan reduces its speed in 100 rpm increments until r 外实测 With r 外目标 Equal; if r 外实测 <r 外目标 At that time, the outdoor exhaust fan increases its speed in 100 rpm increments until r 外实测 With r 外目标 equal.

[0160] Figure 8 This is a device architecture diagram of the indoor target range hood provided in the embodiments of this application.

[0161] The indoor control device 800 can be considered a specific example of an indoor target range hood. The indoor control device 800 communicates with the cloud server 200, which in turn communicates with the client 100, which can be an application or a mini-program. In the shared exhaust duct, the range hood scans, edits, adds, and binds soft-coded information via the client 100, enabling the indoor control device 800 to connect to the cloud server 200. The cloud server 200 can also synchronize the range hood's status information to the client 100. The client 100 can be used to refresh the range hood's status in real time, including the range hood's speed setting, rotation speed, and the opening / closing angle of the intelligent check valve.

[0162] Specifically, the indoor control device 800 includes a CAT1 module 811, a first serial port 812, a second serial port 821, and an indoor range hood control board 822. The CAT1 module 811 has networking and network capabilities. The indoor range hood control board 822 periodically collects the operating condition information of the range hood and transmits it to the CAT1 module 811 through the second serial port 821 and the first serial port 812. The CAT1 module 811 reports the operating condition information to the cloud server 200. Based on the reported operating condition information and considering parameters such as the floor where the range hood is located, high-speed operation on lower floors, low-speed operation on higher floors, opening and closing angle of the electric check valve, flue pressure value, speed and air pressure value of the electric air supply valve, the cloud server 200 intelligently calculates the target operating data of the indoor range hood on each floor, including the target speed of the range hood fan, the target opening and closing angle of the electric check valve, and the target speed of the air supply valve, and sends this data to the CAT1 module 811 of the range hood. The CAT1 module 811 transmits the target working data to the indoor range hood control board 822 through the first serial port 812 and the second serial port 821.

[0163] It should be noted that the indoor range hood control board 822 can also be an intelligent power detection and control board.

[0164] The indoor control device 800 also includes a range hood DC fan 830, an electric check valve 841, an air speed sensor 842, an electric make-up air valve 851, an air speed sensor 852, and an air pressure sensor 853.

[0165] The indoor range hood control board 822 sends the target speed of the range hood fan to the DC fan 830 via serial port. The DC fan 830 operates at this speed, achieving constant airflow in the common flue. The indoor range hood control board 822 also sends the target opening / closing angle of the electric check valve 841 via serial port, causing the electric check valve 841 to operate at the target angle. Furthermore, the indoor range hood control board 822 sends the target speed of the electric make-up air valve 851 via serial port, causing the electric make-up air valve 851 to operate at the target speed, achieving indoor and outdoor pressure balance. This process is repeated sequentially, enabling intelligent and dynamic updates of the operating status information of each indoor range hood in the common flue.

[0166] It should be noted that the indoor control device 800 may also include a temperature regulation device for heating or cooling to maintain the temperature balance of the kitchen and prevent condensation or dew from forming due to excessive temperature difference between indoors and outdoors.

[0167] Figure 9 This is a diagram of the equipment architecture of the outdoor smoke exhaust fan provided in the embodiments of this application.

[0168] The outdoor control device 900 can be seen as a specific example of an outdoor smoke exhaust fan. The outdoor control device 900 communicates with the cloud server 200, and the cloud server 200 communicates with the client 100. The outdoor control device 900 reports operating parameters to the cloud server 200, and the cloud server 200 sends calculated target speed and other information back to the outdoor control device 900, thus controlling the outdoor smoke exhaust fan.

[0169] Specifically, the outdoor control device 900 includes a CAT1 module 911, a third serial port 912, a fourth serial port 921, and an outdoor range hood control board 922. The CAT1 module 911 has networking and network capabilities; it reports operating status information to the cloud server 200. Based on the reported operating status information and the operating rate of the indoor range hoods in the shared flue, the cloud server 200 calculates the target operating parameters of the outdoor exhaust fan and sends them to the CAT1 module 911. The CAT1 module 911 then transmits the target operating parameters to the outdoor exhaust fan control board 922 via the third serial port 912 and the fourth serial port 921.

[0170] It should be noted that the outdoor smoke exhaust fan control board 922 can also be an intelligent power detection and control board.

[0171] The outdoor control device 900 also includes an outdoor auxiliary DC fan for fume extraction 930, a wind pressure sensor 941, and a wind speed sensor 942.

[0172] The outdoor exhaust fan control board 922 sends the target operating parameters to the outdoor auxiliary DC fan 930 via serial port, controlling it to dynamically adjust its speed in 100 rpm increments until it matches the target operating parameters. Afterward, it continues to operate at that speed.

[0173] As can be seen from the technical solutions provided in the above embodiments of this application, this application embodiment, by using a cloud server as the central hub for airflow adjustment, can achieve coordinated adjustment of multiple target range hoods in a public flue. This application receives target operating data sent by the cloud server and dynamically adjusts the current operating data, efficiently and dynamically regulating the airflow to achieve constant pressure and constant airflow operation of the range hoods. On the one hand, by dynamically adjusting the speed of the electric air supply valve, this application maintains the indoor and outdoor pressure balance while preventing the indoor temperature balance from being disrupted, thus preventing condensation or dew caused by excessive indoor and outdoor temperature differences. On the other hand, by dynamically adjusting the fan speed, it achieves constant airflow operation of the range hoods, ensuring smooth smoke exhaust and preventing backflow of fumes. The method of this application embodiment utilizes a cloud server to dynamically calculate the target operating data of each target range hood in the public flue and sends it to the target range hoods, thereby enabling the target range hoods on different floors to intelligently adjust the fan speed and electric air supply valve speed according to the target operating data, achieving constant pressure and constant airflow operation.

[0174] Figure 10 This is a schematic diagram of the structure of an air volume regulating device for multi-story buildings provided in an embodiment of this application.

[0175] like Figure 10 As shown, the device 1000 includes:

[0176] The acquisition module 1001 is used to acquire the current operating data of the target range hood; the current operating data includes the current speed of the fan, the first pressure value detected at the electric check valve, and the second pressure value detected at the electric air supply valve;

[0177] The sending module 1002 is used to send the current operating data and the floor information of the target range hood to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information; the target operating data includes the target air volume and the target operating data; the target operating data includes the target speed of the fan and the target speed of the electric air supply valve;

[0178] The receiving module 1003 is used to receive the target working data sent by the cloud server;

[0179] The electric air supply valve adjustment module 1004 is used to adjust the current rotation speed of the electric air supply valve based on the target rotation speed of the electric air supply valve, and to obtain an updated second pressure value; the updated second pressure value is the second pressure value detected by the electric air supply valve at the current rotation speed.

[0180] The actual air volume determination module 1005 is used to determine the actual air volume of the target range hood based on the first pressure value if the updated second pressure value is within a preset range.

[0181] The fan adjustment module 1006 is used to adjust the current speed of the fan based on the target speed of the fan until the actual air volume is within a preset air volume range; the preset air volume range is determined based on the target air volume.

[0182] In some embodiments, the electric air supply valve regulating module may include:

[0183] The pulse width modulation ratio determination submodule is used to determine a first pulse width modulation ratio and a second pulse width modulation ratio based on the target rotational speed of the electric air supply valve. The first pulse width modulation ratio is used to adjust the current rotational speed of the electric air supply valve, and the second pulse width modulation ratio is used to adjust the current rotational speed of the fan.

[0184] The second pressure value update submodule is used to increase the current rotation speed of the electric air supply valve by the first pulse width modulation ratio when the second pressure value is less than the minimum value in the preset range, so that the updated second pressure value is within the preset range.

[0185] The second pressure value update submodule is used to reduce the current speed of the electric air supply valve by the first pulse width modulation ratio and increase the current speed of the fan by the second pulse width modulation ratio when the second pressure value is greater than the maximum value of the preset range, so that the updated second pressure value is within the preset range.

[0186] In some embodiments, the device 1000 may further include:

[0187] The second pressure value acquisition module is used to acquire the second pressure value periodically at a preset time interval;

[0188] The jump module is used to acquire the real-time operating data of the target range hood when the second pressure value is not within the preset range; and to re-use the real-time operating data as the current operating data, and jump to the step of sending the current operating data and the floor information of the target range hood to the cloud server so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information.

[0189] In some embodiments, the fan regulating module may include:

[0190] The third pulse width modulation ratio determination submodule is used to determine the third pulse width modulation ratio based on the target speed of the fan.

[0191] The speed regulation submodule is used to adjust the current speed of the fan by the third pulse width modulation ratio;

[0192] The current first pressure value acquisition submodule is used to acquire the first pressure value corresponding to the current speed of the fan, and obtain the current first pressure value;

[0193] The current actual air volume determination submodule is used to calculate the current actual air volume based on the current first pressure value;

[0194] The interval judgment submodule is used to determine whether the current actual air volume is within the preset air volume interval;

[0195] The target operating speed determination submodule is used to determine the current speed of the fan as the target operating speed of the fan if the judgment result indicates that the current actual air volume is within the preset air volume range.

[0196] The control operation submodule is used to control the fan of the target range hood to operate at the target operating speed.

[0197] In some embodiments, the target operating data further includes the target opening and closing angle of the electric check valve, and the device 1000 may further include:

[0198] The electric check valve angle adjustment module is used to adjust the current opening and closing angle of the electric check valve to the target opening and closing angle when the current speed of the fan is adjusted by the third pulse width modulation ratio and the judgment result indicates that the current actual air volume is not within the preset air volume range.

[0199] In some embodiments, the device 1000 may further include:

[0200] The function judgment module is used to determine whether the electric check valve of the target range hood has an angle adjustment function based on the floor information of the target range hood.

[0201] The size relationship judgment module is used to determine the size relationship between the actual air volume and the target air volume when the electric check valve does not have an angle adjustment function;

[0202] The shut-off module is used to control the electric check valve to perform a shut-off operation when the actual air volume is greater than the target air volume.

[0203] The opening module is used to control the electric check valve to perform an opening operation when the actual air volume is less than the target air volume.

[0204] In some embodiments, there are multiple target range hoods, and the air outlets of the target range hoods are connected to a common flue, which further includes an outdoor exhaust fan; the device 1000 may also include:

[0205] An outdoor smoke exhaust fan current speed acquisition module is used to acquire the current speed of the outdoor smoke exhaust fan;

[0206] The receiving module is used to receive the target rotation speed of the outdoor exhaust fan sent by the cloud server; the target rotation speed is determined by the cloud server based on the operating rate in the public flue, the actual air volume corresponding to multiple target exhaust fans, and the target air volume; the operating rate is determined by the cloud server based on the operating status information corresponding to multiple target exhaust fans;

[0207] The speed adjustment module is used to adjust the current speed of the outdoor smoke exhaust fan according to a preset step until it is equal to the target speed of the outdoor smoke exhaust fan when the current speed of the outdoor smoke exhaust fan is not equal to the target speed of the outdoor smoke exhaust fan.

[0208] The apparatus and method embodiments described herein are based on the same inventive concept.

[0209] This application provides an airflow regulation system for multi-story buildings. The system includes target range hoods and a cloud server. Multiple target range hoods are connected to the cloud server. The air outlet of each target range hood is connected to a common flue via an indoor exhaust pipe. An electric check valve is installed at the outlet of each indoor exhaust branch pipe. Each target range hood also includes a fan, an electric make-up air valve, and a controller. The controller is used to regulate the airflow of the target range hood according to the airflow regulation method for multi-story buildings described above.

[0210] This application provides an electronic device including a processor and a memory. The memory stores at least one instruction or at least one program, which is loaded and executed by the processor to implement the method provided in the above method embodiments.

[0211] Embodiments of this application also provide a computer storage medium, which can be disposed in a terminal to store at least one instruction or at least one program related to implementing a method as provided in the above method embodiments, wherein the at least one instruction or at least one program is loaded and executed by the processor to implement the method provided in the above method embodiments.

[0212] Embodiments of this application also provide a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the method provided in the above-described method embodiments.

[0213] Optionally, in this embodiment, the storage medium may be located at at least one of the multiple network servers in a computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0214] The memory described in this application embodiment can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, applications required for the functions, etc.; the data storage area may store data created according to the use of the device, etc. In addition, the memory 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 may also include a memory controller to provide the processor with access to the memory.

[0215] The methods provided in this application can be executed on mobile terminals, computer terminals, servers, or similar computing devices. Taking running on a server as an example... Figure 11 This is a hardware structure block diagram of a server for an airflow regulation method in multi-story buildings, as provided in an embodiment of this application. Figure 11As shown, the server 1100 can vary significantly due to different configurations or performance. It may include one or more Central Processing Units (CPUs) 1110 (CPUs 1110 may include, but are not limited to, microprocessors (MCUs) or programmable logic devices (FPGAs), a memory 1130 for storing data, and one or more storage media 1120 (e.g., one or more mass storage devices) for storing application programs 1123 or data 1122. The memory 1130 and storage media 1120 may be temporary or persistent storage. The program stored in the storage media 1120 may include one or more modules, each module including a series of instruction operations on the server. Furthermore, the CPU 1110 may be configured to communicate with the storage media 1120 and execute the series of instruction operations stored in the storage media 1120 on the server 1100. Server 1100 may also include one or more power supplies 1160, one or more wired or wireless network interfaces 1150, one or more input / output interfaces 1140, and / or one or more operating systems 1121, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, etc.

[0216] The input / output interface 1140 can be used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of server 1100. In one example, the input / output interface 1140 includes a network interface controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the input / output interface 1140 may be a radio frequency (RF) module for wireless communication with the Internet.

[0217] Those skilled in the art will understand that Figure 11 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, server 1100 may also include... Figure 11 The more or fewer components shown, or having the same Figure 11 The different configurations shown.

[0218] As can be seen from the embodiments of the airflow regulation method, device, and system for multi-story buildings provided in this application, this application, by using a cloud server as the central hub for airflow regulation, can achieve coordinated regulation of multiple target range hoods in a common flue. This application receives target operating data sent by the cloud server and dynamically adjusts the current operating data, efficiently and dynamically regulating the airflow to achieve constant pressure and constant airflow operation of the range hoods. On the one hand, by dynamically adjusting the speed of the electric air supply valve, this application maintains the indoor and outdoor pressure balance while preventing the indoor temperature balance from being disrupted, thus preventing condensation or dew caused by excessive indoor and outdoor temperature differences. On the other hand, by dynamically adjusting the fan speed, it achieves constant airflow operation of the range hoods, ensuring smooth smoke exhaust and preventing backflow of fumes. The method of this application uses a cloud server to dynamically calculate the target operating data of each target range hood in the common flue and sends it to the target range hoods, thereby enabling the target range hoods on different floors to intelligently adjust the fan speed and electric air supply valve speed according to the target operating data, achieving constant pressure and constant airflow operation.

[0219] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0220] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the embodiments of apparatus, devices, and storage media are basically similar to the method embodiments, so the descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0221] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer storage medium, such as a read-only memory, a disk, or an optical disk.

[0222] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for regulating air volume in multi-story buildings, characterized in that, The method includes: Obtain the current operating data of the target range hood; the current operating data includes the current speed of the fan, the first pressure value detected at the electric check valve, and the second pressure value detected at the electric air supply valve; The current operating data and the floor information of the target range hood are sent to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information; the target operating data includes the target air volume and the target operating data; the target operating data includes the target speed of the fan and the target speed of the electric air supply valve; Receive the target working data sent by the cloud server; Based on the target rotation speed of the electric air supply valve, the current rotation speed of the electric air supply valve is adjusted, and an updated second pressure value is obtained; the updated second pressure value is the second pressure value detected by the electric air supply valve at the current rotation speed. If the updated second pressure value is within a preset range, the actual air volume of the target range hood is determined based on the first pressure value; Based on the target rotational speed of the fan, the current rotational speed of the fan is adjusted until the actual air volume is within a preset air volume range; the preset air volume range is determined based on the target air volume. The second pressure value is acquired periodically at preset time intervals; When the second pressure value is not within the preset range, the real-time operating data of the target range hood is acquired; and the real-time operating data is used as the current operating data again, and the process jumps to the step of sending the current operating data and the floor information of the target range hood to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information.

2. The method according to claim 1, characterized in that, The step of adjusting the current rotation speed of the electric air supply valve based on the target rotation speed of the electric air supply valve and obtaining the updated second pressure value includes: A first pulse width modulation ratio and a second pulse width modulation ratio are determined based on the target rotation speed of the electric air supply valve. The first pulse width modulation ratio is used to adjust the current rotation speed of the electric air supply valve, and the second pulse width modulation ratio is used to adjust the current rotation speed of the fan. When the second pressure value is less than the minimum value within the preset range, the current rotation speed of the electric air supply valve is increased by the first pulse width modulation ratio so that the updated second pressure value is within the preset range. When the second pressure value is greater than the maximum value of the preset range, the current speed of the electric air supply valve is reduced by the first pulse width modulation ratio, and the current speed of the fan is increased by the second pulse width modulation ratio, so that the updated second pressure value is within the preset range.

3. The method according to claim 1, characterized in that, The step of adjusting the current speed of the fan based on the target speed of the fan until the actual air volume is within the preset air volume range includes: The third pulse width modulation ratio is determined based on the target rotational speed of the fan. The current speed of the fan is adjusted by the third pulse width modulation ratio; Obtain the first pressure value corresponding to the current speed of the fan to get the current first pressure value; Calculate the current actual air volume based on the current first pressure value; Determine whether the current actual air volume is within the preset air volume range; If the judgment result indicates that the current actual air volume is within the preset air volume range, the current speed of the fan is taken as the target operating speed of the fan; The fan of the target range hood is controlled to operate at the target operating speed.

4. The method according to claim 3, characterized in that, The target operating data also includes the target opening and closing angle of the electric check valve, and the method further includes: After adjusting the current speed of the fan by the third pulse width modulation ratio, if the judgment result indicates that the current actual air volume is not within the preset air volume range, the current opening and closing angle of the electric check valve is adjusted to the target opening and closing angle.

5. The method according to claim 1, characterized in that, The method further includes: Based on the floor information of the target range hood, determine whether the electric check valve of the target range hood has an angle adjustment function; When the electric check valve does not have an angle adjustment function, determine the relationship between the actual air volume and the target air volume; When the actual air volume is greater than the target air volume, the electric check valve is controlled to perform a closing operation; When the actual air volume is less than the target air volume, the electric check valve is controlled to open.

6. The method according to claim 1, characterized in that, The target range hoods are multiple, and the air outlets of the target range hoods are connected to a common flue, which also includes an outdoor exhaust fan; the method further includes: Obtain the current rotational speed of the outdoor smoke exhaust fan; The system receives the target rotation speed of the outdoor exhaust fan sent by the cloud server; the target rotation speed is determined by the cloud server based on the operating rate in the public flue, the actual air volume corresponding to multiple target exhaust fans, and the target air volume; the operating rate is determined by the cloud server based on the operating status information corresponding to multiple target exhaust fans. When the current speed of the outdoor smoke exhaust fan is not equal to the target speed of the outdoor smoke exhaust fan, the current speed of the outdoor smoke exhaust fan is adjusted according to a preset step until it is equal to the target speed of the outdoor smoke exhaust fan.

7. An airflow regulating device for multi-story buildings, characterized in that, include: The acquisition module is used to acquire the current operating data of the target range hood; the current operating data includes the current speed of the fan, the first pressure value detected at the electric check valve, and the second pressure value detected at the electric air supply valve; The sending module is used to send the current operating data and the floor information of the target range hood to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information; the target operating data includes the target air volume and the target operating data. The target operating data includes the target speed of the fan and the target speed of the electric make-up air valve; A receiving module is used to receive the target working data sent by the cloud server; An electric air supply valve adjustment module is used to adjust the current rotation speed of the electric air supply valve based on the target rotation speed of the electric air supply valve, and to obtain an updated second pressure value; the updated second pressure value is the second pressure value detected by the electric air supply valve at the current rotation speed. The actual air volume determination module is used to determine the actual air volume of the target range hood based on the first pressure value if the updated second pressure value is within a preset range. The fan adjustment module is used to adjust the current speed of the fan based on the target speed of the fan until the actual air volume is within the preset air volume range; The preset airflow range is determined based on the target airflow; The second pressure value acquisition module is used to periodically acquire the second pressure value at preset time intervals; The jump module is used to acquire the real-time operating data of the target range hood when the second pressure value is not within the preset range; The real-time operating data is then used as the current operating data, and the process jumps to the step of sending the current operating data and the floor information of the target range hood to the cloud server, so that the cloud server can determine the target operating data of the target range hood based on the current operating data and the floor information.

8. An airflow regulation system for multi-story buildings, characterized in that, The airflow regulation system includes a target range hood and a cloud server; there are multiple target range hoods, and each target range hood is communicatively connected to the cloud server; the air outlet of each target range hood is connected to a common flue through an indoor exhaust pipe; an electric check valve is installed at the outlet of each indoor exhaust branch pipe; each target range hood further includes a fan, an electric make-up air valve, and a controller; the controller is used to regulate the airflow of the target range hood according to any one of claims 1-6.

9. The air volume regulating system according to claim 8, characterized in that, The air volume regulation system also includes an outdoor smoke exhaust fan, which is connected to the outlet of the public smoke duct; the outdoor smoke exhaust fan is communicatively connected to the cloud server.

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