Air volume adjusting method, device and system for multi-story building

Abstract

The invention discloses an air volume adjusting method, device and system for a multi-story building. The method comprises the steps that current operation data of a target extractor hood are obtained; the current operation data and floor information of the target extractor hood are sent to a cloud server, so that the cloud server determines target working data of the target extractor hood based on the current operation data and the floor information; receiving target working data sent by the cloud server; based on the target rotating speed of the electric air supplementing valve, the current rotating speed of the electric air supplementing valve is adjusted, and an updated second pressure value is obtained; if the updated second pressure value is within the preset range, the actual air volume of the target extractor hood is determined according to the first pressure value; according to the target rotating speed of the draught fan, the current rotating speed is adjusted till the actual air volume is within the preset air volume interval, the air volume can be efficiently and dynamically adjusted, and constant-pressure and constant-air-volume operation of the extractor hood is achieved.

Description

Technical Field

[0001] The present 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 Art

[0002] In order to maintain the appearance of the entire building, many high-rise residential buildings often use public flues for centralized smoke exhaust. The air outlet of each household's indoor range hood is connected to the public flue to exhaust the smoke into the public flue. In addition, an outdoor smoke exhauster is usually installed on the top floor of the building to exhaust the smoke from the public flue to the outside.

[0003] However, on the one hand, the range hoods in every household are operated at a fixed speed and need to be adjusted manually. If they cannot be adjusted in time, it will hinder the discharge of kitchen fumes and prevent the fumes from being discharged smoothly to the public flue, which can easily cause the fumes in the public flue to flow back to the kitchen. On the other hand, the traditional solution uses an accelerated fresh air system to compensate for the negative pressure caused by the operation of the range hood, but the overall energy consumption is high.

[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 needs to be solved urgently. Summary of the invention

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

[0006] On the one hand, an embodiment of the present application provides a method for adjusting air volume in a multi-story building, the method comprising:

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

[0008] Sending the current operation data and the floor information of the target range hood to a cloud server, so that the cloud server determines the target operation data of the target range hood based on the current operation data and the floor information; the target operation data includes a target air volume and a target operation data; the target operation data includes a target speed of the fan and a target speed of the electric air supply valve;

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

[0010] Based on the target speed of the electric air supply valve, the current 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 speed;

[0011] If the updated second pressure value is within a preset range, determining the actual air volume of the target range hood according to the first pressure value;

[0012] Based on the target rotation speed of the fan, the current rotation 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 according to the target air volume.

[0013] In an exemplary embodiment, 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 the updated second pressure value includes:

[0014] Determining a first pulse width modulation ratio and a second pulse width modulation ratio based on a target speed of the electric air supply valve, wherein the first pulse width modulation ratio is used to adjust a current speed of the electric air supply valve, and the second pulse width modulation ratio is used to adjust a current 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 an exemplary embodiment, after the updated second pressure value is within the preset range, the method further includes:

[0018] periodically acquiring the second pressure value at a preset time interval;

[0019] When the second pressure value is not within the preset range, the real-time operating data of the target range hood is obtained; and the real-time operating data is used as the current operating data again, and the step of sending the current operating data and the floor information of the target range hood to the cloud server is jumped to enable the cloud server to determine the target working data of the target range hood based on the current operating data and the floor information.

[0020] In an exemplary embodiment, adjusting 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 includes:

[0021] determining a third pulse width modulation ratio based on a target speed of the fan;

[0022] adjusting the current speed of the fan by the third pulse width modulation ratio;

[0023] Obtaining a first pressure value corresponding to the fan at a current speed to obtain a current first pressure value;

[0024] Calculating the current actual air volume according to the current first pressure value;

[0025] Determining 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 used 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 an exemplary embodiment, the target operation data further includes a target opening and closing angle of the electric check valve, and the method further includes:

[0029] After the current rotation speed of the fan is adjusted 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 an exemplary embodiment, the method further comprises:

[0031] According to the floor information of the target range hood, determining 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, determining the magnitude relationship between the actual air volume and the target air volume;

[0033] When the actual air volume is greater than the target air volume, controlling the electric check valve 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 perform an opening operation.

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

[0036] Obtaining the current rotation speed of the outdoor smoke exhaust fan;

[0037] receiving a target speed of the outdoor range hood sent by the cloud server; the target speed is determined by the cloud server according to the startup rate in the common flue, the actual air volume corresponding to the plurality of target range hoods, and the target air volume; the startup rate is determined by the cloud server according to startup status information corresponding to the plurality of target range hoods;

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

[0039] On the other hand, the present application also provides an air volume adjustment device for a multi-story building, the device comprising:

[0040] An acquisition module, used for acquiring current operation data of the target range hood; the current operation data includes a current rotation speed of the fan, a first pressure value detected at the electric check valve, and a second pressure value detected at the electric air supply valve;

[0041] a sending module, configured to send the current operation data and the floor information of the target range hood to a cloud server, so that the cloud server determines the target operation data of the target range hood based on the current operation data and the floor information; the target operation data includes a target air volume and a target operation data; the target operation data includes a target rotation speed of the fan and a target rotation speed of the electric air supply valve;

[0042] A receiving module, used for receiving the target working data sent by the cloud server;

[0043] The electric air supply valve adjustment module is used to adjust the current speed of the electric air supply valve based on the target 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 speed;

[0044] an actual air volume determination module, configured to determine the actual air volume of the target range hood according to 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 according to the target air volume.

[0046] On the other hand, the present application also provides an air volume 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 smoke exhaust pipe; an electric check valve is provided at the outlet of the indoor smoke exhaust branch pipe; each target range hood also comprises a fan, an electric air supply valve and a controller; the controller is used to regulate the air volume of the target range hood according to the air volume regulation method for multi-story buildings as described above.

[0047] On the other hand, the present application also provides an electronic device, comprising a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement the air volume regulation method for multi-story buildings as described above.

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

[0049] On the other hand, the present application also provides a computer program product or a computer program, the computer program product or the computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the air volume adjustment method for a multi-story building as described above.

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

[0051] The embodiment of the present application can realize the coordinated adjustment of multiple target range hoods in the public flue by adjusting the air volume with the cloud server as the hub. The present application dynamically adjusts the current operation data by receiving the target working data sent by the cloud server, and efficiently and dynamically adjusts the air volume to realize the constant pressure and constant air volume operation of the range hood. On the one hand, the present application maintains the pressure balance between indoor and outdoor by dynamically adjusting the speed of the electric air supply valve, while avoiding the indoor temperature balance from being broken, and can prevent condensation or condensation caused by excessive temperature difference between indoor and outdoor. On the other hand, by dynamically adjusting the speed of the fan, the constant air volume operation of the range hood is realized, and the smoke exhaust is smooth and the oil smoke is avoided. Through the method of the embodiment of the present application, the cloud server is used to dynamically calculate the target working data of each target range hood in the public flue, and it is sent to the target range hood, so that the target range hoods on high and low floors can intelligently adjust the fan speed and the speed of the electric air supply valve according to the target working data to realize constant pressure and constant air volume operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

[0054] Figure 2 It is a flow chart of the air volume regulation method for multi-story buildings provided in an embodiment of the present application.

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

[0056] Figure 4 It is a schematic diagram of the flow chart of adjusting the air volume provided in an embodiment of the present application.

[0057] Figure 5 It is a schematic diagram of a flow chart for adjusting the wind speed of an outdoor smoke exhaust fan provided in an embodiment of the present application.

[0058] Figure 6 It is a schematic flowchart of a method for controlling the air volume of a target range hood in a room provided in an embodiment of the present application.

[0059] Figure 7 It is a schematic flowchart of the method for controlling the air volume adjustment of an outdoor smoke exhaust fan provided in an embodiment of the present application.

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

[0061] Fig. 9 This is a diagram of the equipment architecture of the outdoor smoke exhaust machine provided in an embodiment of the present application.

[0062] Fig.10 It is a schematic diagram of the structure of an air volume regulating device for a multi-story building provided in an embodiment of the present application.

[0063] Fig.11 This is a hardware structure block diagram of a server for an air volume adjustment method for a multi-story building provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0065] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

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

[0067] like Figure 1As shown, a plurality of target range hoods are arranged in a 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 public flue 5 through an indoor smoke exhaust pipe; each target range hood includes an electric check valve, a fan, an electric supply air valve and a controller; the controller is used to adjust the air volume of the target range hood. The electric check valve is used to prevent the oil smoke from flowing back to the kitchen from the public flue or other smoke exhaust pipes; the fan is used to draw the oil smoke in the kitchen into the indoor smoke exhaust pipe, and discharge the oil smoke through the public flue; the electric supply air valve is used to adjust the air volume and supply air to the kitchen, thereby balancing the atmospheric pressure between the kitchen and the outdoors. As shown Figure 1 As shown, an electric check valve 21 is provided at the outlet of the exhaust branch pipe in the indoor room of the target range hood 1, and an electric check valve 22 is provided at the outlet of the exhaust branch pipe in the indoor room of the target range hood 2; the target range hood 1 also includes a fan 11 and an electric air supply valve 31, and the target range hood 2 also includes a fan 12 and an electric air supply valve 32.

[0068] The outlet of the public flue 5 is also connected to an outdoor smoke exhaust fan 4. The outdoor smoke exhaust fan 4 is used to exhaust the oil smoke in the public flue 5 to the outside. The outdoor smoke 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 oil smoke from flowing back.

[0069] It should be noted that in the embodiment of the present application, the target range hood and outdoor smoke exhaust fan are both communicatively connected to the cloud server. The cloud server of the method of the present application coordinates and controls the target range hood and the outdoor smoke exhaust fan, efficiently and dynamically adjusts the air volume, and realizes constant pressure and constant air volume operation of the range hood.

[0070] Figure 2 It is a flow chart of the air volume regulation method for multi-story buildings provided in an embodiment of the present application.

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

[0072] Among them, the first pressure value can be understood as the flue pressure value at the floor where the target range hood is located in the public flue. The first pressure value can be acquired by the pressure sensor at the electric check valve. The second pressure value can be understood as the atmospheric pressure value of the kitchen where the target range hood is located. The second pressure value can be acquired by the air pressure sensor at the electric air supply valve.

[0073] S203: sending the current operation data and the floor information of the target range hood to a cloud server, so that the cloud server determines the target operation data of the target range hood based on the current operation data and the floor information; the target operation data includes a target air volume and a target operation data; the target operation data includes a target speed of the fan and a target speed of the electric air supply valve;

[0074] The cloud server is connected to the target range hood in communication. Specifically, a communication connection can be established through a communication module. In one example, the communication module can be a CAT1 (LTE UE-Category1) module with an uplink peak rate of 5Mbit / s and a downlink peak rate of 10Mbit / s, so that the target range hood can quickly and efficiently transmit the collected data to the cloud server, and the communication delay is low, which can reach the millisecond level, and can achieve real-time or near real-time data transmission, and the communication control performance is stable. It should be noted that the communication module can also be in other forms, such as NB-IoT module, 2G module, 3G module, 4G module. With the development of technology, the communication module can also include other modules such as 5G module and 6G module. This application does not limit the communication module. In addition, it is also possible to establish a communication connection with the cloud server using far-field communication technologies such as LoRa and near-field communication technologies such as WiFi, BLE, and ZigBee.

[0075] It should be noted that in a multi-story building, there are multiple target range hoods, and the floor information of the target range hoods in the public flue is marked, so as to locate the position of the target range hood in the public flue. All target range hoods in the public flue can be scanned, edited, added, and bound to soft coding information through the client, so that the target range hoods can be connected to the cloud server. The client can be in the form of an application or a small program.

[0076] The cloud server is preset with the total number of target range hoods corresponding to the public flue and the first number of target range hoods in the on-state; by calculating the ratio between the first number and the total number, and taking the ratio as the on-rate corresponding to the public flue, the cloud server comprehensively calculates the target air volume of the target range hood according to the on-rate, the floor where the target range hood is located, the fan speed of the target range hood, the speed of the electric air supply valve and other information, and records it as Q 目标 Specifically, the cloud server determines the target air volume of the target range hood based on the current operating data and floor information. The calculation formula is as follows:

[0077] Q 目标 =f(x,y,z,t)*Q 0

[0078] Among them, Q 目标is the target air volume, x is the overall operating rate of the flue, y is the floor where the target range hood is located, z is the fan speed of the target range hood, t is the speed of the electric air supply valve, Q 0 is the initial air volume of the public flue.

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

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

[0081] S207: Based on the target speed of the electric air supply valve, adjust the current 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 speed;

[0082] After the speed of the electric air supply valve is adjusted, the second pressure value will also change and be updated accordingly. Therefore, in the process of adjusting the speed of the electric air supply valve, the second pressure value that changes is obtained in real time, which is recorded as W. 检测 , and determine whether the second pressure value is within a preset range. The preset range is [ξ-ω, ξ+ω]. ξ is the pressure value corresponding to one atmospheric pressure, ω is the amount that can float up and down based on ξ, and ω is a preset constant.

[0083] When the updated second pressure value is within the preset range, it can be regarded as that the indoor and outdoor pressures are balanced. In this application, by adjusting the rotation speed of the electric air supply valve, the indoor and outdoor pressures are balanced, the indoor temperature balance is avoided from being broken, and condensation or dew condensation caused by excessive indoor and outdoor temperature differences can be effectively prevented.

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

[0085] Wherein, according to the first pressure value, the calculation formula corresponding to the actual air volume of the target range hood is determined as follows:

[0086] Q 实测 =(ap 2 +bp+c)*Q 0

[0087] Among them, Q 实测 is the actual air volume, p is the first pressure value, Q 0 is the initial air volume, a, b and c are all constants.

[0088] S211: Based on the target rotational speed of the fan, adjust the current rotational 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] After the speed of the fan is adjusted, the first pressure value will also change, and the actual air volume will also change accordingly. Therefore, in the process of adjusting the speed of the fan, the first pressure value is obtained in real time and the actual air volume is calculated, and then it is determined whether the actual air volume is within the preset air volume range. It should be noted that the preset air volume range is determined based on the target air volume calculated by the cloud server. Specifically, the preset air volume range can be [Q 目标 -σ,Q 目标 +σ], where Q 目标 is the target air volume, σ is the 目标 The amount that can fluctuate up and down on the basis, σ is a constant, which can be a minimum value. When the actual air volume is in the preset air volume range, it can be regarded as the actual air volume reaching the target air volume, and the fan of the target range hood will run at the current speed.

[0090] The embodiment of the present application can realize the coordinated adjustment of multiple target range hoods in the public flue by adjusting the air volume with the cloud server as the hub. The present application dynamically adjusts the current operation data by receiving the target working data sent by the cloud server, and efficiently and dynamically adjusts the air volume to realize the constant pressure and constant air volume operation of the range hood. On the one hand, the present application maintains the pressure balance between indoor and outdoor by dynamically adjusting the speed of the electric air supply valve, while avoiding the indoor temperature balance from being broken, and can prevent condensation or condensation caused by excessive temperature difference between indoor and outdoor. On the other hand, by dynamically adjusting the speed of the fan, the constant air volume operation of the range hood is realized, and the smoke exhaust is smooth and the oil smoke is avoided. Through the method of the embodiment of the present application, the cloud server is used to dynamically calculate the target working data of each target range hood in the public flue, and it is sent to the target range hood, so that the target range hoods on high and low floors can intelligently adjust the fan speed and the speed of the electric air supply valve according to the target working data to realize constant pressure and constant air volume operation.

[0091] Figure 3 It is a schematic diagram of the process of adjusting the second pressure value provided in an embodiment of the present application. Figure 3 This can be regarded as a specific example of step S207. The step of adjusting the current speed of the electric air supply valve based on the target speed of the electric air supply valve 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 a target rotation speed of the electric air supply valve, wherein the first pulse width modulation ratio is used to adjust a current rotation speed of the electric air supply valve, and the second pulse width modulation ratio is used to adjust a current rotation speed of the fan.

[0093] The motor speed can be adjusted through pulse width modulation (PWM) technology, that is, by modulating the width of the pulse, the required waveform control motor can be equivalently obtained. The pulse width modulation ratio can be understood as the duty cycle, that is, the ratio 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 a duty cycle of 80%. The speed of the motor can be changed by pulse signals with different duty cycles. Therefore, after obtaining the target speed of the electric air supply valve, it is first necessary to determine the first pulse width modulation ratio for adjusting the speed of the electric air supply valve. It should be noted that when the second pressure value is greater than the maximum value of the preset range, the second pulse width modulation ratio for adjusting the speed of the fan can also be determined according to the target speed of the electric air supply valve.

[0094] S303: when the second pressure value is less than the minimum value within the preset range, increasing the current rotation speed of the electric air supply valve 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 per unit time of the electric air supply valve, thereby increasing the pressure of the internal environment of the kitchen.

[0096] In one implementation, the current speed of the electric air supply valve is increased according to the first pulse width modulation ratio. This process can be carried out in multiple stages. For example, assuming that before adjustment, the pulse width modulation ratio corresponding to the current 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 speed corresponding to the pulse width modulation ratio of 50%, and then gradually increase to 80%, so that the indoor pressure can be evenly transitioned. In another implementation, the pulse signal corresponding to the first pulse width modulation ratio can also be directly used to drive the electric air supply valve, so that the current speed of the electric air supply valve is equal to the target 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 in a positive pressure state at the current moment. According to the first pulse width modulation ratio, the current speed of the electric air supply valve is reduced, thereby reducing the air volume per unit time of the electric air supply valve, so that the pressure of the internal environment of the kitchen is reduced. At the same time, according to the second pulse width modulation ratio, the speed of the fan of the target range hood is increased, so as to quickly achieve indoor and outdoor pressure balance.

[0099] In one embodiment, after the updated second pressure value is 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 reusing the real-time operating data as current operating data, and skipping 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 working data of the target range hood based on the current operating data and the floor information.

[0100] In the embodiment of the present application, the second pressure value W is queried at a fixed time interval. 检测 The second pressure value is used to reflect whether the kitchen environment is in a negative pressure or positive pressure state, and the electric air supply valve and the fan speed are adjusted in real time to supply air to the kitchen in time, which can quickly achieve the effect of indoor and outdoor pressure balance and avoid condensation or condensation caused by large indoor pressure differences.

[0101] Figure 4 It is a schematic diagram of the flow chart of adjusting the air volume provided in an embodiment of the present application. Figure 4 This can be regarded as a specific example of step S211. 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 a preset air volume range includes:

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

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

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

[0105] The preset air volume range is [Q 目标 -σ,Q目标 +σ], if Q 实测 Less than Q 目标 -σ, it indicates that the current air volume is insufficient, and the oil smoke in the public flue is easy to flow back into the kitchen, and the current speed of the fan needs to be increased. In the embodiment of the present application, according to the third pulse width modulation ratio, the current speed of the fan is increased, thereby increasing the air volume per unit time of the fan, accelerating the emission of oil smoke, and avoiding oil smoke backflow.

[0106] If Q 实测 Greater than Q 目标 +σ, it indicates that the current air volume is too large and the current speed of the fan needs to be reduced. In the embodiment of the present application, according to the third pulse width modulation ratio, the current speed of the fan is reduced, thereby reducing the air volume per unit time of the fan, slowing down the emission of oil smoke, reducing energy consumption while ensuring normal emission of oil smoke, improving the working efficiency of the target oil smoke extraction, and making the target range hood operate efficiently.

[0107] S405: Obtaining a first pressure value corresponding to the fan at a current rotation speed to obtain a current first pressure value;

[0108] After the fan speed is adjusted, the first pressure value will also change, and the corresponding actual air volume will also change. Therefore, in the process of adjusting the fan speed, the first pressure value of the fan at the current speed is obtained in real time to obtain the current first pressure value, and then the current actual air volume can be obtained through the current first pressure value.

[0109] S 407: Calculating the current actual air volume according to the current first pressure value;

[0110] The calculation process of the current actual air volume is similar to the calculation process of the actual air volume 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 an embodiment of the present 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%, and 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 used 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 fume discharge and efficient operation of the target range hood at the current speed, and the current speed of the fan is used 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 operation data further includes a target opening and closing angle of the electric check valve. The method provided in the embodiment of the present application further includes:

[0117] After the current rotation speed of the fan is adjusted 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 the current speed of the fan is adjusted by the third pulse width modulation ratio, the current actual air volume Q is calculated again. 实测 , if Q 实测 Less than Q 目标 -σ indicates that adjusting the fan cannot increase the actual air volume to Q 目标 -σ, then adjust the opening and closing angle of the electric check valve to the target opening and closing angle to accelerate the emission of indoor oil smoke; if Q 实测 Greater than Q 目标 +σ, indicating that the fan cannot be reduced to Q 目标 +σ, then adjust the opening and closing angle of the electric check valve to the target opening and closing angle, thereby reducing the emission of indoor oil smoke.

[0119] It should be noted that before adjusting the opening and closing angle of the electric check valve, first 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; the flue pressure at the lower floors of the public flue is relatively high. In the embodiment of the present application, for the n target range hoods on the lower floors, only the switch function of the electric check valve is activated, that is, the 0° closed state angle or the 90° open state angle, and the angle adjustment function of the electric check valve is not activated. Among them, n can be determined according to the total number of floors N of the multi-story building. For example, the ratio of n to N can be 20%. It should be understood that the numerical value here is only an example.

[0120] When the electric check valve does not have an angle adjustment function, the magnitude 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 and closing 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 the 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 distinguishing between high floors and low floors, the low floors only control the opening and closing of the electric check valve, while the high floors control and adjust the opening and closing angle of the electric check valve, thereby making the air volume adjustment more accurate and stable, which is conducive to the smooth overall smoke exhaust of the public flue.

[0122] At the same time, the wind speed of the outdoor smoke exhaust fan is also uniformly adjusted through the cloud server. Figure 5 The present invention provides a flow chart of adjusting the wind speed of an outdoor smoke exhaust fan. In a multi-story building, there are multiple target range hoods, and the air outlets of the target range hoods are connected to a public flue, which also includes an outdoor smoke exhaust fan.

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

[0124] The current rotation speed of the outdoor smoke exhaust fan can be measured and collected by a wind speed sensor built into the outdoor smoke exhaust fan.

[0125] S503: receiving the target speed of the outdoor range hood sent by the cloud server; the target speed is determined by the cloud server according to the startup rate in the public flue, the actual air volume corresponding to the plurality of target range hoods, and the target air volume; the startup rate is determined by the cloud server according to the startup status information corresponding to the plurality of target range hoods;

[0126] The cloud server is preset with the total number of target range hoods corresponding to the public flue and the first number of target range hoods in the on state; in one embodiment, the ratio between the first number and the total number can be calculated, and the ratio can be used as the on rate corresponding to the public flue.

[0127] Specifically, according to the start-up rate in the public flue, the actual air volume corresponding to the plurality of target range hoods, and the target air volume, the calculation formula corresponding to the target speed of the outdoor range hood is determined as follows:

[0128] r=r 0 +r λ

[0129] r λ =∑Q 差值 / Q 0 =[(Q 1目标 -Q 1实测 )*λ 1+...+(Q N目标 -Q N实测 )*λ N ] / Q 0

[0130]

[0131] Among them, r λ Indicates the compensation speed of the outdoor smoke exhaust fan; r 0 represents the auxiliary speed of the outdoor smoke exhaust fan; r represents the target speed of the outdoor smoke exhaust fan; N represents the total number of floors of the public smoke duct; Q 0 Indicates the initial air volume of the public flue; Q 1目标 To Q N目标 represents the target air volume of N target range hoods; Q 1实测 To Q N实测 represents the actual air volume of N target range hoods; 1 To N Represents the preset weights corresponding to 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 range hood is determined based on the difference between the actual air volume and the target air volume of all target range hoods in the public flue, so that the air volume adjustment is more accurate, which prompts the oil smoke in the public flue to be discharged to the outside, avoiding the backflow of oil smoke.

[0133] It should be noted that the cloud server is connected to the outdoor smoke exhaust fan in communication. Specifically, the 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 communication module.

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

[0135] In one embodiment, the cloud server sends the target speed of the outdoor smoke exhaust machine to the communication module of the outdoor smoke exhaust machine, and then the communication module sends the target speed to the power board of the outdoor smoke exhaust machine through the serial port. When it is determined that the current speed of the outdoor smoke exhaust machine is not equal to the target speed of the outdoor smoke exhaust machine, in one example, dynamic adjustment can be performed according to a preset step of 100 rpm until the actual speed of the outdoor smoke exhaust machine is the same as the target speed, and the outdoor smoke exhaust machine is controlled to continue to run at the speed.

[0136] Figure 6 It is a schematic flowchart of a method for controlling the air volume of a target range hood in a room provided in an embodiment of the present application.

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

[0138] A home indoor range hood can be regarded as a specific example of a target range hood. After the home indoor range hood is turned on and running, the operating information of the indoor range hood is actively reported to the cloud server. The operating information of the indoor range hood may include the floor where the range hood is located, the fan gear, 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, the air pressure detected at the electric air supply valve, etc.

[0139] The cloud server calculates the target speed, target air volume, target opening and closing angle of the check valve and target speed of the air supply valve of the indoor range hood according to the startup rate of the public flue and the operating parameters of the indoor range hood, and sends them to the indoor range hood.

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

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

[0142] S603: Obtaining 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 the air pressure W 检测 Is it within the preset range?

[0144] By judging (W 检测 -ξ) belongs to the interval [-w,w], which can be used to determine whether the current air pressure in the kitchen is balanced.

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

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

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

[0148] S607: Control 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 -σ), the range hood electronic control board should be given priority to realize PWM control matching of the fan motor through the serial port, and then the opening and closing angle of the check valve should be increased to accelerate the discharge of indoor oil smoke. 实测 Greater than (Q 目标 +σ), the range hood electronic control board shall be given priority to realize PWM control matching of the fan motor through the serial port, and then the opening and closing angle of the electric check valve shall be reduced to reduce the emission of indoor oil smoke.

[0152] Figure 7 It is a schematic flowchart of the method for controlling the air volume adjustment of an outdoor smoke exhaust fan provided in an embodiment of the present application. Figure 7 Can be seen as Figure 5 A specific example of .

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

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

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

[0156] S703: Determine the compensation 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] Among them, r 外目标 =r 0 +r λ It should be noted that step S701 and step S703 may 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 If they are equal, the outdoor smoke exhaust fan continues to run at the current speed; if 外实测 >=r 外目标 When the outdoor smoke exhaust fan is turned on, the speed is reduced by 100 rpm until r 外实测 With r 外目标 equal; if r 外实测 <r 外目标When the outdoor smoke exhaust fan increases its speed in steps of 100 rpm, it reaches r 外实测 With r 外目标 equal.

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

[0161] The indoor control device 800 can be regarded as a specific example of an indoor target range hood. The indoor control device 800 is connected to the cloud server 200 in communication, and the cloud server 200 is connected to the client 100 in communication. The client 100 can be an application or a small program. The range hood in the public flue scans, edits, adds, and binds soft coding information through the client 100, so that the indoor control device 800 can be connected to the cloud server 200. The cloud server 200 can also synchronize the status information of the range hood to the client 100. The client 100 can be used to refresh the status of the range hood in real time, including information such as the range hood gear, the range hood speed, and the opening and 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 networking capabilities; the indoor range hood control board 822 regularly collects the working 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 working condition information to the cloud server 200. The cloud server 200 intelligently calculates the target working data of the indoor range hoods on each floor according to the reported working condition information and the working condition parameter values ​​such as the floor where the range hood is located, the high-speed operation of the lower floor, the low-speed operation of the upper floor, the opening and closing angle of the electric check valve and the flue pressure value, the speed and air pressure value of the electric air supply valve, etc., and sends it 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 may also be an intelligent power detection control board.

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

[0165] The indoor range hood control board 822 notifies the range hood DC fan 830 of the target speed of the range hood fan through the serial port, and the DC fan 830 operates at this speed to achieve constant air volume operation in the public flue. The indoor range hood control board 822 notifies the electric check valve 841 of the target opening and closing angle of the range hood electric check valve through the serial port, and the electric check valve 841 operates at the target opening and closing angle. In addition, the indoor range hood control board 822 notifies the electric air supply valve 851 of the target speed of the electric air supply valve through the serial port, and the electric air supply valve 851 operates at the target speed to achieve indoor and outdoor pressure balance. The above process is looped in sequence to achieve intelligent and dynamic updating of the operating condition information of each indoor range hood in the public flue.

[0166] It should be noted that the indoor control device 800 may also include a temperature regulating device for heating or cooling to maintain the temperature balance of the kitchen and prevent condensation or dew condensation caused by excessive temperature difference between indoor and outdoor.

[0167] Fig. 9 This is a diagram of the equipment architecture of the outdoor smoke exhaust machine provided in an embodiment of the present application.

[0168] The outdoor control device 900 can be regarded as a specific example of an outdoor smoke exhaust machine. The outdoor control device 900 is connected to the cloud server 200 for communication, and the cloud server 200 is connected to the client 100 for communication. The outdoor control device 900 reports the operating parameters to the cloud server 200, and the cloud server 200 sends the calculated target speed and other information to the outdoor control device 900 to realize the control of the outdoor smoke exhaust machine.

[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 networking capabilities; the CAT1 module 911 reports the operating condition information to the cloud server 200. The cloud server 200 calculates the target operating condition parameters of the outdoor range hood according to the reported operating condition information and the start-up rate of the indoor range hood in the public flue, and sends it to the CAT1 module 911 of the outdoor range hood. The CAT1 module 911 transmits the target operating condition parameters to the outdoor range hood control board 922 through 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 may also be an intelligent power detection control board.

[0171] The outdoor control device 900 further includes an outdoor oil smoke auxiliary DC fan 930 , a wind pressure sensor 941 and a wind speed sensor 942 .

[0172] The outdoor smoke exhaust fan control board 922 sends the target operating parameters to the outdoor fume auxiliary DC fan 930 through the serial port, and controls it to dynamically adjust the speed in steps of 100 rpm until it matches the target operating parameters, and then continues to operate at this speed.

[0173] It can be seen from the technical solutions provided by the above embodiments of the present application that the embodiments of the present application can realize the coordinated adjustment of multiple target range hoods in the public flue by adjusting the air volume with the cloud server as the hub. The present application dynamically adjusts the current operation data by receiving the target working data sent by the cloud server, and efficiently and dynamically adjusts the air volume to realize the constant pressure and constant air volume operation of the range hood. On the one hand, the present application maintains the indoor and outdoor pressure balance by dynamically adjusting the speed of the electric air supply valve, while avoiding the indoor temperature balance from being broken, and can prevent condensation or condensation caused by excessive indoor and outdoor temperature difference. On the other hand, by dynamically adjusting the speed of the fan, the constant air volume operation of the range hood is realized, ensuring smooth smoke exhaust and avoiding oil smoke backflow. Through the method of the embodiment of the present application, the cloud server is used to dynamically calculate the target working data of each target range hood in the public flue, and it is sent to the target range hood, so that the target range hoods on high and low floors can intelligently adjust the fan speed and the speed of the electric air supply valve according to the target working data to realize constant pressure and constant air volume operation.

[0174] Fig.10 It is a schematic diagram of the structure of an air volume regulating device for a multi-story building provided in an embodiment of the present application.

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

[0176] The acquisition module 1001 is used to acquire the current operation data of the target range hood; the current operation 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 operation data and the floor information of the target range hood to the cloud server, so that the cloud server determines the target working data of the target range hood based on the current operation data and the floor information; the target working data includes the target air volume and the target operation data; the target operation 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 speed of the electric air supply valve based on the target 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 speed;

[0180] an actual air volume determination module 1005, configured to determine the actual air volume of the target range hood according to 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 according to the target air volume.

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

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

[0184] A second pressure value updating submodule, for, when the second pressure value is less than the minimum value within the preset range, increasing the current rotation speed of the electric air supply valve by the first pulse width modulation ratio, so that the updated second pressure value is within the preset range;

[0185] The second pressure value updating submodule is used to reduce the current speed of the electric air supply valve through the first pulse width modulation ratio and increase the current speed of the fan through 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 apparatus 1000 may further include:

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

[0188] A jump module is used to obtain the real-time operating data of the target range hood when the second pressure value is not within the preset range; and to use the real-time operating data as the current operating data again, and to 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 determines the target working data of the target range hood based on the current operating data and the floor information.

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

[0190] A third pulse width modulation ratio determination submodule, configured to determine a third pulse width modulation ratio based on a target rotation speed of the fan;

[0191] A speed regulating submodule, used for regulating the current speed of the fan through the third pulse width modulation ratio;

[0192] A current first pressure value acquisition submodule is used to acquire the first pressure value corresponding to the fan at the current speed to obtain the current first pressure value;

[0193] A current actual air volume determination submodule, used to calculate the current actual air volume according to the current first pressure value;

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

[0195] a target operating speed determination submodule, configured to use 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 operation control 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 operation data further includes a 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 if the judgment result indicates that the current actual air volume is not within the preset air volume range.

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

[0200] a function determination module, for determining whether the electric check valve of the target range hood has an angle adjustment function according to the floor information of the target range hood;

[0201] A size relationship judgment module, used for judging 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] A closing module, used for controlling the electric check valve to perform a closing 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, and the common flue also includes an outdoor smoke 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] a receiving module, configured to receive a target speed of the outdoor range hood sent by the cloud server; the target speed is determined by the cloud server based on the startup rate in the common flue, the actual air volume corresponding to the plurality of target range hoods, and the target air volume; the startup rate is determined by the cloud server based on startup status information corresponding to the plurality of target range hoods;

[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 device and method embodiments in the described device embodiments are based on the same inventive concept.

[0209] An embodiment of the present application provides an air volume regulation system for a multi-story building, 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 smoke exhaust pipe; an electric check valve is provided at the outlet of the indoor smoke exhaust branch pipe; each target range hood also comprises a fan, an electric air supply valve and a controller; the controller is used to regulate the air volume of the target range hood according to the air volume regulation method for a multi-story building as described above.

[0210] An embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores at least one instruction or at least one program, and 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 embodiment.

[0211] An embodiment of the present application also provides a computer storage medium, which can be set in a terminal to store at least one instruction or at least one program related to a method provided in the above method embodiment for implementing a method embodiment, and 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 embodiment.

[0212] The embodiments of the present application also provide a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the method provided in the above method embodiment.

[0213] Optionally, in the embodiment of the present application, the storage medium may be located in at least one of the multiple network servers of the computer network. Optionally, in the present embodiment, the storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0214] The memory described in the embodiment of the present application can be used to store software programs and modules, and 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, wherein the program storage area may store an operating system, application programs required for functions, etc.; the data storage area may store data created according to the use of the device, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a 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 method provided in the embodiment of the present application can be executed in a mobile terminal, a computer terminal, a server or a similar computing device. Taking running on a server as an example, Fig.11 1 is a hardware structure block diagram of a server for a method for adjusting air volume in a multi-story building provided in an embodiment of the present application. Fig.11As shown, the server 1100 may have relatively large differences due to different configurations or performances, and may include one or more central processing units (CPU) 1110 (the central processing unit 1110 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 1130 for storing data, and one or more storage media 1120 (such as one or more mass storage devices) for storing application programs 1123 or data 1122. Among them, the memory 1130 and the storage medium 1120 can be short-term storage or permanent storage. The program stored in the storage medium 1120 may include one or more modules, each of which may include a series of instruction operations on the server. Furthermore, the central processing unit 1110 can be configured to communicate with the storage medium 1120 and execute a series of instruction operations in the storage medium 1120 on the server 1100. The server 1100 may also include one or more power supplies 1160, one or more wired or wireless network interfaces 1150, one or more input and output interfaces 1140, and / or one or more operating systems 1121, such as Windows Server TM, Mac OS X TM, Unix TM, Linux TM, FreeBSD TM, etc.

[0216] The input / output interface 1140 may be used to receive or send data via a network. The specific example of the network may include a wireless network provided by a communication provider of the server 1100. In one example, the input / output interface 1140 includes a network adapter (Network Interface Controller, NIC), which may be connected to other network devices via a base station so as to communicate with the Internet. In one example, the input / output interface 1140 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0217] It can be understood by those skilled in the art that Fig.11 The structure shown is only for illustration and does not limit the structure of the above electronic device. Fig.11 More or fewer components as shown, or with Fig.11 Different configurations are shown.

[0218] It can be seen from the embodiments of the air volume adjustment method, device and system for multi-story buildings provided by the present application that the present application can realize the coordinated adjustment of multiple target range hoods in the public flue by adjusting the air volume with the cloud server as the center. The present application dynamically adjusts the current operation data by receiving the target working data sent by the cloud server, and efficiently and dynamically adjusts the air volume to realize the constant pressure and constant air volume operation of the range hood. On the one hand, the present application maintains the indoor and outdoor pressure balance by dynamically adjusting the speed of the electric air supply valve, and at the same time avoids the indoor temperature balance from being broken, and can prevent condensation or condensation caused by excessive indoor and outdoor temperature difference. On the other hand, by dynamically adjusting the speed of the fan, the constant air volume operation of the range hood is realized, and the smoke exhaust is smooth and the oil smoke is avoided. Through the method of the embodiment of the present application, the target working data of each target range hood in the public flue is dynamically calculated by using the cloud server, and sent to the target range hood, so that the target range hoods on high and low floors can intelligently adjust the fan speed and the speed of the electric air supply valve according to the target working data to realize constant pressure and constant air volume operation.

[0219] It should be noted that the above-mentioned sequence of the embodiments of the present application is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of this specification are described. Other embodiments are within the scope of the attached claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0220] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0221] A person skilled in the art will appreciate that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

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

Claims

1. A method for regulating air volume in a multi-story building, characterized in that: The method comprises: Acquire current operating data of the target range hood; the current operating data includes a current rotation speed of the fan, a first pressure value detected at the electric check valve, and a second pressure value detected at the electric air supply valve; Sending the current operation data and the floor information of the target range hood to a cloud server, so that the cloud server determines the target operation data of the target range hood based on the current operation data and the floor information; the target operation data includes a target air volume and a target operation data; the target operation data includes a target speed of the fan and a target speed of the electric air supply valve; Receiving the target working data sent by the cloud server; Based on the target speed of the electric air supply valve, the current 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 speed; If the updated second pressure value is within a preset range, determining the actual air volume of the target range hood according to the first pressure value; Based on the target rotation speed of the fan, the current rotation 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 according to the target air volume.

2. The method according to claim 1, characterized in that The 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: Determining a first pulse width modulation ratio and a second pulse width modulation ratio based on a target speed of the electric air supply valve, wherein the first pulse width modulation ratio is used to adjust a current speed of the electric air supply valve, and the second pulse width modulation ratio is used to adjust a current 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 After the updated second pressure value is within the preset range, the method further includes: periodically acquiring the second pressure value at a preset time interval; When the second pressure value is not within the preset range, the real-time operating data of the target range hood is obtained; and the real-time operating data is used as the current operating data again, and the step of sending the current operating data and the floor information of the target range hood to the cloud server is jumped to enable the cloud server to determine the target working data of the target range hood based on the current operating data and the floor information.

4. The method according to claim 1, characterized in that The adjusting 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 includes: determining a third pulse width modulation ratio based on a target speed of the fan; adjusting the current speed of the fan by the third pulse width modulation ratio; Obtaining a first pressure value corresponding to the fan at a current speed to obtain a current first pressure value; Calculating the current actual air volume according to the current first pressure value; Determining 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 used as the target operating speed of the fan; The fan of the target range hood is controlled to operate at the target operating speed.

5. The method according to claim 4, characterized in that The target operation data also includes a target opening and closing angle of the electric check valve, and the method further includes: After the current rotation speed of the fan is adjusted 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.

6. The method according to claim 1, characterized in that The method further comprises: According to the floor information of the target range hood, determining 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, determining the magnitude relationship between the actual air volume and the target air volume; When the actual air volume is greater than the target air volume, controlling the electric check valve to perform a closing operation; When the actual air volume is less than the target air volume, the electric check valve is controlled to perform an opening operation.

7. The method according to claim 1, characterized in that There are multiple target range hoods, and the air outlets of the target range hoods are connected to a common flue, and the common flue also includes an outdoor smoke exhaust fan; the method further includes: Obtaining the current rotation speed of the outdoor smoke exhaust fan; receiving a target speed of the outdoor range hood sent by the cloud server; the target speed is determined by the cloud server according to the startup rate in the common flue, the actual air volume corresponding to the plurality of target range hoods, and the target air volume; the startup rate is determined by the cloud server according to startup status information corresponding to the plurality of target range hoods; When the current rotation speed of the outdoor smoke exhaust fan is not equal to the target rotation speed of the outdoor smoke exhaust fan, the current rotation speed of the outdoor smoke exhaust fan is adjusted according to a preset step until it is equal to the target rotation speed of the outdoor smoke exhaust fan.

8. An air volume regulating device for a multi-storey building, characterized in that: include: An acquisition module, used for acquiring current operation data of the target range hood; the current operation data includes a current rotation speed of the fan, a first pressure value detected at the electric check valve, and a second pressure value detected at the electric air supply valve; a sending module, configured to send the current operation data and the floor information of the target range hood to a cloud server, so that the cloud server determines the target operation data of the target range hood based on the current operation data and the floor information; the target operation data includes a target air volume and a target operation data; The target operation data includes a target rotation speed of the fan and a target rotation speed of the electric air supply valve; A receiving module, used for receiving the target working data sent by the cloud server; The electric air supply valve adjustment module is used to adjust the current speed of the electric air supply valve based on the target 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 speed; an actual air volume determination module, configured to determine the actual air volume of the target range hood according to the first pressure value if the updated second pressure value is within a preset range; A fan adjustment module, used for adjusting 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 interval is determined according to the target air volume.

9. An air volume adjustment system for a multi-storey building, characterized in that: The air volume regulation system includes 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 the public flue through an indoor smoke exhaust pipe; an electric check valve is provided at the outlet of the indoor smoke exhaust branch pipe; each target range hood also includes a fan, an electric air supply valve and a controller; the controller is used to regulate the air volume of the target range hood according to the method described in any one of claims 1-7.

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

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