WO2019015534A1

WO2019015534A1 - Smoke ventilation device, air volume and check valve control method, bidirectional wireless communication method, and computer readable medium

Info

Publication number: WO2019015534A1
Application number: PCT/CN2018/095658
Authority: WO
Inventors: 任富佳; 何剑萍; 何峰; 张明俊; 于丹阳
Original assignee: 杭州老板电器股份有限公司
Priority date: 2017-07-20
Filing date: 2018-07-13
Publication date: 2019-01-24

Abstract

A smoke ventilation device, an air volume and check valve control method, a bidirectional wireless communication method, and a computer readable medium. The smoke ventilation device comprises: a central flue (6); a main smoke ventilation machine (7) in communication with the central flue (6); multiple smoke ventilation branch pipes (4) located on each floor of a residential building, wherein one end of each smoke ventilation branch pipe (4) is in communication with the central flue (6); multiple smoke ventilation terminal machines (2), respectively mounted at the other end of the smoke ventilation branch pipes (4); and a control system comprising: a controller and multiple control panels separately and electrically connected therewith, monitoring elements (3), and adjustment elements (2). A preset parameter of each smoke ventilation branch pipe (4) is entered into the control panel. The monitoring element (3) is provided in each smoke ventilation branch pipe (4) and is configured to acquire an actual parameter in the smoke ventilation branch pipe (4). The controller performs intelligent analysis and determination on the basis of the actual and preset parameters. The adjustment elements (2) and/or the smoke ventilation main machine (7) adjusts the actual parameter according to a result of intelligent analysis and determination, such that the actual parameter is equal to the set parameter. The control system achieves even smoke ventilation on each floor.

Description

Smoke exhaust device, air volume and check valve control method, two-way wireless communication method and computer readable medium

Cross-reference to related applications

This application is required to be submitted to the Chinese Patent Office on July 20, 2017. The application number is 2017105960148, and the name is “Fume Exhaust Device and Smoke Exhaust Air Volume Control Method”. The application number submitted to the China Patent Office on July 20, 2017 is 2017105960152. The name is “Central Air Purification System and Its Central Control Circuit”. The application number submitted to the China Patent Office on July 21, 2017 is 2017208893704, entitled “No Power Hood and Its Control Circuit”, in July 2017. The application number of the China Patent Office submitted on the 20th is 2017105989860, the name is "fan control method and device", and the application number of 2017105991339 submitted to the Chinese Patent Office on July 21, 2017, the name is "check valve control method, device and "Return valve" and the priority of the Chinese patent application entitled "Two-way wireless communication method, device and terminal", which is filed on July 20, 2017, the entire contents of which are hereby incorporated by reference. .

Technical field

The present application relates to the field of kitchen and bathroom equipment technology, and in particular to a smoke exhausting device, a wind volume and check valve control method, a two-way wireless communication method, and a computer readable medium.

Background technique

In the high-rise residential centralized smoke exhaust system, due to the increasing resistance of the system itself from the upper level to the lower level, when the user uses the same power range hood, the high-rise residential smoke is relatively large, while the low-level smoke is small. This is especially true when the hood is at peak usage.

At present, many hood companies continue to increase the air volume of smoking machines in order to overcome the resistance of the flue, but for high-floor users, the amount of smoke is particularly large, which not only causes great energy waste, but also brings high noise.

In response to the above problems, although some companies have proposed different ways of using the same range of hoods in the whole system: low-level high-power range hoods, high-rise low-power range hoods. Although the problem has been solved, the usage of users on each floor in the system is ever-changing, and the startup conditions are complicated. It is difficult to adapt to various working conditions simply by changing the power of the hood.

Based on the above problems, it is particularly important to propose a smoke exhausting device that can adapt to various working conditions and realize uniform smoke exhaustion through various ways of energy saving and noise reduction.

Summary of the invention

In view of this, the object of the embodiments of the present application at least includes: providing a smoke exhausting device, a wind volume and check valve control method, a two-way wireless communication method, and a computer readable medium. In order to alleviate the prior art for high-floor users, the amount of smoke is particularly large, which not only causes great energy waste, but also causes high noise problems.

In order to achieve the above objectives, the technical solution adopted in the present application is as follows:

A smoke exhausting device comprising:

Concentrated flue, running through all floors of the house;

a smoke exhausting host connected to the concentrated flue;

a plurality of exhaust pipe branches respectively located in each floor of the house and one end of each of the exhaust pipe branches is connected to the concentrated flue;

a plurality of smoke exhausting terminals respectively installed at the other end of each of the exhaust pipe branches;

a control system comprising a controller and a plurality of control panels, a plurality of monitoring components and a plurality of adjustment components electrically coupled to the controller;

The control panel is configured to input preset parameters in each exhaust pipe;

a plurality of the monitoring elements are disposed in each of the exhaust pipe branches, configured to collect actual parameters in the exhaust pipe;

a plurality of the adjusting elements are disposed in each of the exhaust pipe branches, and are configured to adjust actual parameters in the exhaust pipe branch;

The controller is configured to perform intelligent analysis on actual parameters and preset parameters to generate a determination result;

Each of the adjusting components and/or the exhausting machine controls an actual parameter in each of the exhaust pipe branches according to the determination result, so that actual parameters in each of the exhaust pipe branches are adapted to preset parameters.

An air volume adjustment method is applied to the control system, and includes the following steps:

Parameter setting: Receive preset parameters set by the user in the control panel;

Start-up operation: turn on the smoke exhaust terminal, and the smoke exhausting machine runs at a fixed frequency;

Parameter analysis: receiving the actual parameters in the exhaust pipe collected by the monitoring component, and directly analyzing the actual parameters and preset parameters;

Air volume adjustment: according to the result of the intelligent analysis judgment, the adjusting component is controlled to adjust the air volume in the exhaust pipe, and if the actual parameter is equal or approximately equal to the preset parameter, the control adjusting component ends the adjustment, if the adjusting component is The adjustment cannot reach the preset parameters, and the frequency of the smoke exhausting host is adjusted so that the actual parameters are adapted to the preset parameters.

A check valve control method is applied to the smoke exhaust terminal, the method comprising:

Obtaining a rotation angle of the valve piece of the check valve, the valve piece is fixed to a rotating shaft of the valve motor, and the rotating shaft of the valve motor drives the valve piece to rotate when rotating;

Determining, according to the to-be-rotated angle and a preset angular velocity obtained by pre-measuring the valve motor, a number of first pulses for driving the valve motor to rotate the pulse signal to be rotated;

Sending the first pulse number of pulse signals to the valve motor such that the angle of rotation of the valve plate of the valve motor of the valve motor to the check valve is the angle to be rotated.

A two-way wireless communication method is applied to the smoke exhausting device, and the control system and the plurality of smoke exhausting terminal machines cyclically transmit a heartbeat packet in a fixed interval of time intervals, the method comprising:

The second exhaust terminal receives the control system heartbeat packet sent by the control system and the first exhaust terminal heartbeat packet sent by the first exhaust terminal, and the second exhaust terminal performs the control system information according to the information Information update; the control system heartbeat package includes control system information, and the first exhaust terminal heartbeat package includes first exhaust terminal information;

The second exhaust terminal device broadcasts a second exhaust terminal heartbeat packet to the control system and the other exhaust terminal; the second exhaust terminal heartbeat packet includes the control system information, the The first exhaust terminal information and the second exhaust terminal information.

A computer readable medium having processor-executable non-volatile program code, the program code causing the processor to perform the aforementioned method.

The smoke exhausting device provided by the present application comprises a concentrated flue running through each floor of the house; a smoke exhausting host connected to the concentrated flue; and a plurality of exhaust pipe branches respectively located in each floor of the house and one end of each exhaust pipe Connected to the concentrated flue; a plurality of exhaust terminals are respectively installed at the other end of each exhaust pipe; the control system includes a controller and a plurality of control panels, a plurality of monitoring components and the electrical connection respectively with the controller a plurality of adjusting components; the control panel is configured to input preset parameters in each of the exhaust pipe branches; a plurality of monitoring components are disposed in each of the exhaust pipe branches, configured to collect actual parameters in the exhaust pipe branch; and the plurality of adjusting components are disposed on Each of the exhaust pipe branches is configured to adjust actual parameters in the exhaust pipe branch; the controller is configured to perform intelligent analysis on actual parameters and preset parameters, and generate a judgment result; each adjusting component and/or the smoke exhausting host according to the controller The intelligent analysis judges the results, controls the actual parameters in each exhaust pipe, so that the actual parameters in each exhaust pipe are compatible with the preset parameters.

The smoke exhausting device provided by the present application adjusts the air volume in the exhaust pipe of the exhaust terminal of each layer through the adjusting component and/or the exhausting machine to meet the demand of the smoke of different floors, and the total exhaust is the layers. Turning on the sum of the smoke exhausts of the smoke exhaust terminal does not occur in order to meet the minimum amount of smoke exhausted, and the frequency of the smoke exhausting host is not limitedly increased, resulting in waste of energy and achieving uniform smoke exhaustion on each floor. Moreover, since the exhaust terminals of each layer adopt the same power, only the monitoring components and the adjusting components are separately adjusted, and the effects of the respective adjustments are achieved, so that the device runs more smoothly and can adapt to different working conditions.

The above described objects, features, and advantages of the present invention will become more apparent from the following description.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings to be used in the embodiments will be briefly described below. It should be understood that the following drawings show only certain embodiments of the present application, and therefore It should be seen as a limitation on the scope, and those skilled in the art can obtain other related drawings according to these drawings without any creative work.

1 is a schematic structural view of a smoke exhausting device provided by the present application;

2 is a system diagram of a control system provided by the present application;

3 is a specific system diagram of the control system provided by the present application shown in FIG. 2;

4 is a structural block diagram of a central control circuit according to an embodiment of the present application;

FIG. 5 is a schematic diagram of connection of another central control circuit according to an embodiment of the present application; FIG.

FIG. 6 is a schematic diagram of a pin of a controller according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a driving circuit of a wireless module according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a driving circuit of a frequency converter according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a driving circuit of a load according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a temperature and humidity sensor driving circuit according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a driving circuit of a door control switch according to an embodiment of the present disclosure;

12 is a structural block diagram of a central air purification system according to an embodiment of the present application;

FIG. 13 is a structural block diagram of a control circuit according to an embodiment of the present invention;

14 is a structural block diagram of another control circuit according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of connection of a control circuit according to an embodiment of the present invention; FIG.

16 is a structural block diagram of another control circuit according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of connection of another control circuit according to an embodiment of the present invention; FIG.

FIG. 18 is a schematic diagram of a pin of a main control chip according to an embodiment of the present invention; FIG.

FIG. 19 is a schematic diagram of a fan signal receiving circuit according to an embodiment of the present invention; FIG.

20 is a structural block diagram of a powerless hood provided by an embodiment of the present invention;

21 is a structural diagram of a check valve angle control device according to an embodiment of the present application;

22 is another structural diagram of a check valve angle control device according to an embodiment of the present application;

23 is a system flowchart of a method for adjusting a wind volume of a smoke exhausting device provided by the present application;

FIG. 24 is a flowchart of a method for controlling a fan according to an embodiment of the present application;

Figure 25 is a wind pressure air flow curve according to an exemplary embodiment of the present application;

FIG. 26 is another flowchart of a method for controlling a fan according to an embodiment of the present application;

Figure 27 is a flow chart of step S203 of Figure 3;

28 is a flowchart of a method for controlling a check valve angle according to an embodiment of the present application;

FIG. 29 is another flowchart of a method for controlling an angle of a check valve according to an embodiment of the present application; FIG.

FIG. 30 is a flowchart of a two-way wireless communication method according to an embodiment of the present application;

FIG. 31 is a schematic diagram of a system communication sequence according to an embodiment of the present application;

32 is a flowchart of another two-way wireless communication method according to an embodiment of the present application;

FIG. 33 is a flowchart of another two-way wireless communication method according to an embodiment of the present application;

FIG. 34 is a flowchart of another two-way wireless communication method according to an embodiment of the present application;

Icons: 1-exhaust terminal; 2-regulating component; 3-monitoring component; 4-smoking branch pipe; 5-fire check valve; 6-concentrated flue; 7-exhaust main engine; 110-controller; - first wireless module; 130 - fan drive circuit; 140 - purifier drive circuit; 210 - frequency converter; 220 - fan; 230 - gate switch; 240 - first EMC module; 250 - switching power supply; 260 - temperature and humidity Sensor; 270-heating fan; 280-cloud platform; 290-GPRS module; 300-first button; 310-first display; 320-door status indicator; 330-purifier; 910-outdoor fan; Indoor terminal; 930-purifier; 940-central control circuit; 400-valve motor drive circuit; 401-master chip; 402-second wireless module; 410-key drive circuit; 420-fan signal receiving circuit; Valve motor; 440-second button; 450-second EMC module; 460-switching power supply; 470-second display; 480-buzzer; 490-light; 500-hood body; 510-duct; 520-electric check valve; 530-control circuit; 600-first detection switch; 610-second detection switch; 620-master module; 630-motor; 640-cross-zero detection ; A first optical coupler 650; 660- second optical coupler; 670- forward switch; 680- reversing switch; 690- third wireless module.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in various different configurations. The detailed description of the embodiments of the present application, which is set forth in the claims All other embodiments obtained by a person skilled in the art based on the embodiments of the present application without creative efforts are within the scope of the present application.

It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once an item is defined in one figure, it is not necessary to further define and explain it in the subsequent figures. Also, in the description of the present application, the terms "first", "second", and the like are used merely to distinguish a description, and are not to be construed as indicating or implying a relative importance.

For the centralized smoke exhaust system of high-rise residential buildings, because the resistance of the system itself increases from the upper level to the lower level, when the user uses the same power range hood, the high-rise residential house has a relatively large amount of smoke, while the low-level smoke is small. This is especially true when the hood is at peak usage. At present, many hood companies continue to increase the air volume of smoking machines in order to overcome the resistance of the flue, but for high-floor users, the amount of smoke is particularly large, which not only causes great energy waste, but also brings high noise. Although some companies have proposed different ways of using the same range of hoods in the whole system: low-level high-power hoods, high-rise low-power hoods. Although the problem has been solved, the usage of users on each floor in the system is ever-changing, and the startup conditions are complicated. It is difficult to adapt to various working conditions simply by changing the power of the hood.

In view of this, the embodiment provides a smoke exhausting device and a wind volume adjusting method to alleviate the above problems.

Please refer to Figure 1-3 for details:

2 is a system diagram of a control system provided by the present application.

As shown in FIG. 1-2, a smoke exhausting device provided in this embodiment includes: a concentrated flue 6 that runs through each floor of the house; a smoke exhausting host 7 that communicates with the concentrated flue 6; and a plurality of exhaust pipe branches 4, They are respectively located in each floor of the house and one end of each exhaust pipe branch 4 is connected with the concentrated flue 6; a plurality of exhaust terminal machines 1 are respectively installed at the other end of each exhaust pipe branch 4; the control system includes a controller And a plurality of control panels electrically connected to the controller, a plurality of monitoring components 3 and a plurality of adjustment components 2; the control panel is configured to input preset parameters in each of the exhaust manifolds 4; the plurality of monitoring components 3 are disposed in each The exhaust pipe 4 is configured to collect actual parameters in the exhaust pipe branch 4; a plurality of adjusting components 2 are disposed in each of the exhaust pipe branches 4, and are configured to adjust actual parameters in the exhaust pipe branch 4; the controller will actual parameters The intelligent analysis and judgment are directly performed with the preset parameters, and the judgment result is generated; each adjustment component 2 and/or the smoke exhausting host 7 controls the actual parameters in the respective exhaust pipe branches 4 according to the intelligent analysis judgment result of the controller, so that each exhaust pipe is exhausted. Actual in branch pipe 4 The parameters are adapted to the preset parameters, ie equal or approximately equal.

Specifically, the preset parameter includes at least one of a wind volume preset parameter, a wind speed preset parameter, and a pressure preset parameter, and correspondingly, the actual parameter includes at least one of an air volume value, a wind speed value, and a pressure value.

The preset parameter is determined according to the gear position requirement of the user of the smoke exhaust terminal 1 to determine at least one of a predetermined air volume, a predetermined wind speed and a predetermined pressure to be reached by the smoke exhaust terminal machine 1 according to the pressure-air volume of the smoke exhaust terminal machine 1 The characteristic determines at least one of the air volume, the wind speed and the pressure at the monitoring element 3 within the branch pipe.

It should be noted that the preset parameters and the actual parameters in this embodiment are not limited to the foregoing three types, and the preset parameters are not described herein again.

The beneficial effects of this embodiment:

The smoke exhausting device provided in this embodiment adjusts the air volume in the exhaust pipe branch pipe 4 of each layer of the smoke exhausting terminal machine 1 through the adjusting component 2 and/or the smoke exhausting host 7 to meet the demand of the smoke exhausted by the users of different floors, and the total row The amount of smoke is the sum of the amount of smoke exhausted by the smoke evacuation terminal unit 1 at each layer, and the occurrence of the energy of the smoke exhausting machine 7 is not increased in order to satisfy the minimum amount of smoke exhausted, resulting in waste of energy and realization. Evenly exhausting smoke on each floor, and since each layer of smoke exhausting terminal 1 adopts the same power, only the monitoring component 3 is adjusted separately with the adjusting component 2, and the effects of the respective adjustments are achieved, so that the device runs more smoothly and can adapt to different conditions. Working condition.

Referring to FIG. 1 , in another embodiment of the present application, a smoke exhausting device is also provided, which has the same general structure as the smoke exhausting device of the first embodiment. On the basis of the exhaust pipe 4 and concentrated smoke A fire check valve 5 is installed at the junction of the road 6.

The beneficial effects of this embodiment:

The addition of the fire check valve 5 can prevent the smoke from being excessively high in the exhaust pipe 4 and the concentrated passage, and on the other hand can prevent the flue gas in the concentrated flue 6 from flowing back into the exhaust pipe 4 to ensure the inside. Exhaust smoke is carried out in an orderly manner.

In still another embodiment of the present application, there is also provided a smoke evacuation device having the same general structure as the smoke evacuation device of the first embodiment and the second embodiment.

Preferably, the monitoring element 3 comprises at least one of a pressure sensor, an air volume sensor and a wind speed sensor.

Please refer to Figure 3 for details:

FIG. 3 is a specific system diagram of the control system provided by FIG. 2 .

As shown in FIG. 3, for the structural integrity, the adjusting component 2 adopts an air volume adjusting valve, and the smoke exhausting machine 7 adopts a variable frequency motor; specifically, each of the smoke exhausting terminal machines 1 is provided with a plurality of gear positions, and the smoke exhausting machine 7 It is provided with a plurality of frequencies suitable for various gear positions, and can realize adjustment of various frequencies; more specifically, the monitoring component 3 includes an on-site signal collecting device and a signal conversion device that are electrically connected, and the field collecting device is configured to collect the row At least one of the pressure value, the air volume value and the wind speed value of the cigarette branch pipe 4, and is converted into an electric signal by the signal conversion device; the controller: the electric signal collecting device, the central processing unit and the signal output device, which are sequentially electrically connected, the signal acquisition The device is configured to collect the electrical signal converted by the signal conversion device and transmit it to the central processor, and the central processor directly performs the intelligent analysis and judgment on the actual parameter and the preset parameter, and the control signal output device outputs the electrical signal to the adjusting component 2 or the smoke exhausting host. 7 adjustment; air volume regulating valve: including signal receiving device and driving device for electrical connection, signal receiving device receiving signal output The output electrical signal is transmitted to the driving device, so that the driving device adjusts the opening degree of the air volume regulating valve: the variable frequency motor: includes a signal receiving device and a driving device electrically connected, and the signal receiving device receives the electrical signal output by the signal output device, and transmits To the drive unit, the drive unit adjusts the frequency of the variable frequency motor.

At present, most of the components of the smoke exhausting device are controlled by a single controller or a control circuit, and state monitoring or data interaction cannot be performed between each other, which makes it difficult to uniformly schedule the states of each component during operation, and the overall operation efficiency is low. In this embodiment, the control system further includes: a first wireless module 120, the adjusting component includes: a fan driving circuit 130 and a purifier driving circuit 140;

As shown in FIG. 4, the controller 110 is connected to the first wireless module 120, the fan driving circuit 130, and the purifier driving circuit 140. In the embodiment of the present application, the controller 110, the first wireless module 120, and the fan may be included. The circuit of the drive circuit 130 and the purifier drive circuit 140 is referred to as a central control circuit. The first wireless module 120 is communicably connected to each of the smoke exhausting terminals of the smoke exhausting device, and the number of the smoke exhausting terminal machines may be plural. The fan drive circuit 130 is connected to the smoke exhausting host, and the number of the smoke exhausting hosts is at least one. The purifier drive circuit 140 is coupled to a purifier, preferably a purifier using a high voltage electrostatic purifier. The controller 110 receives the operation data of each of the smoke exhaust terminals in real time through the first wireless module 120, and the operation data includes a state in which the smoke exhaust terminal is turned on or off.

The controller 110 triggers the fan drive circuit 130 to control the operation of the exhaust main engine according to the operation data of each exhaust terminal, and triggers the purifier drive circuit 140 to control the purifier operation. The controller 110 can determine the number of power-on terminals of the smoke-discharging terminal according to the state of the smoke-discharging terminal, and determine whether the smoke-selling host runs and runs according to the number of the power-on.

Therefore, by connecting the controller 110, the first wireless module 120, the fan drive circuit, and the purifier drive circuit, and the controller 110 is respectively connected to the first wireless module 120, the fan drive circuit, and the purifier drive circuit, the smoke exhaust host The purifier can be uniformly controlled by the controller 110.

The controller 110 can receive the operation data of each smoke exhaust terminal in real time through the first wireless module 120, and automatically control the operation of the smoke exhausting host according to the number of the terminal devices that are turned on. For example, when the number of power-on is 0, the control of the smoke-exhausting host stops running; when the number of power-on is 10, the operating frequency of the smoke-exhausting host is 10HZ; and so on, until the exhausting machine reaches the maximum operating frequency of 50HZ. Compared with the method of separately controlling the smoke exhausting host in the prior art, the flexible setting of the operating frequency of the smoke exhausting host can flexibly reduce the energy consumption under the premise of satisfying the air supply amount.

When the controller 110 determines that at least one smoke exhaust terminal is running, the control purifier is turned on to meet the user's air purification requirements; at the same time, the purifier operation can be controlled according to the state of the smoke exhaust host, as long as the smoke exhaust host is at The non-stop operating state controls the purifier to turn on. In the above manner, the operation of the purifier is automatically controlled by the controller 110 according to the state of the exhaust terminal and the exhaust main engine, and the purifier is activated only when the exhaust terminal or the exhaust main engine is operated. In this case, the purifier is stopped, rather than being activated at any time during the operation of the exhaust unit, both to meet the purification requirements and to reduce the energy consumption.

In the embodiment of the present application, the controller 110, the first wireless module 120, the fan driving circuit and the purifier driving circuit are integrated, and the controller 110 can receive the operating data of each exhaust terminal in real time through the first wireless module 120, based on the operation. The data generates and sends control signals to the fan drive circuit and the purifier drive circuit to respectively control the operation of the exhaust main engine and the purifier, and the above integrated control mode can strengthen the components in a manner of separately controlling the exhaust main engine and the purifier. The interaction between the information improves the operation efficiency of the whole system. At the same time, the integrated control method does not need to set parameters or change the switch state to each component when the manual control is performed, and the control is convenient.

In the controller 110, according to the functional requirements of each component, a stable and reliable program is written to control the orderly operation of each functional module.

In view of finer control of the operation of the exhaust main engine, the above-mentioned exhaust main engine further includes a frequency converter, and the above fan drive circuit is connected with the frequency converter. The controller 110 controls the frequency converter through a fan drive circuit to control the operating frequency of the smoke exhausting host. Referring to Figure 5, the central control circuit is shown coupled to the frequency converter 210, which is coupled to the smoke evacuation host 220.

In the embodiment, the purifier adopts a high-voltage electrostatic purifier, and a high-voltage electric field is generated inside during operation. If the high-voltage electrostatic purifier is still in operation while the electrical cabinet door is open, there is a high risk of electric shock, so the above control The device 110 is also connected with a gate switch, which is disposed at the door of the electrical cabinet door, can detect the switch state of the electrical cabinet door, and allows the high voltage electrostatic purifier to start only when the electrical cabinet door is closed. When the controller 110 receives the electrical cabinet door closing signal sent by the door switch and receives the fan running signal sent by the fan driving circuit, the controller 110 controls the purifier to turn on. Referring to the connection diagram of the central control circuit shown in FIG. 5, the central control circuit is shown connected to the gate switch 230 and the purifier 330.

The central control circuit is connected to the first EMC module 240 in consideration of EMC interference. The first EMC module 240 can include a reactor and a filter, or a customized EMC filter plate. Among them, the reactor can suppress harmonics and weaken the influence of power supply voltage imbalance; the filter can reduce and suppress electromagnetic interference. A first EMC module 240 is shown in FIG. 5 that is coupled to a switching power supply 250.

Further, referring to FIG. 5, the above control circuit is further connected with a switching power supply 250 configured to supply power to the controller 110. Specifically, the switching power supply rectifies the 220V AC voltage into 12V and 5V DC power, and supplies power to each weak power function module.

The central control circuit further integrates a temperature and humidity sensor drive circuit and a heat dissipation fan drive circuit. The controller 110 is connected to the temperature and humidity sensor driving circuit and the cooling fan driving circuit respectively; the temperature and humidity sensor driving circuit is connected with the temperature and humidity sensor; the cooling fan driving circuit is connected with the cooling fan, and the controller 110 receives the temperature and humidity information collected by the temperature and humidity sensor. According to the temperature and humidity information, the opening, closing and rotating speed of the cooling fan are controlled. In FIG. 5, the central control circuit is connected to the temperature and humidity sensor 260 and the heat dissipation fan 270, respectively. In order to maintain the temperature and humidity in the electrical cabinet in a suitable range, the controller 110 determines whether the temperature and humidity information collected by the temperature and humidity sensor exceeds a suitable range, and if so, controls the cooling fan to start, and can control the heat dissipation according to a degree exceeding a suitable range. The speed of the fan.

As shown in FIG. 5, the first wireless module 120 is connected to the central control circuit, and the first wireless module 120 is further connected to the cloud platform, and configured to send the operation data of the smoke exhaust terminal, the smoke exhausting host, and the purifier to The cloud platform receives the control commands issued by the cloud platform. The user can view the working status and fault status of the terminal, the smoke exhausting host and the purifier on the cloud platform. The monitoring software can be installed on the cloud platform to display the above running data in real time. The user can also input a control command through the cloud platform, configured to control the operation of the smoke exhausting host or the purifier, and the cloud platform sends a control command to the first wireless module 120 of the controller 110, and the controller 110 changes the smoke exhausting host and purifies according to the control instruction. The operating state of the device. Specifically, the cloud platform and the first wireless module 120 can send and receive information through GPRS, and can also adopt other reliable wireless transmission methods in the prior art. It can be understood that the central control circuit can be connected to a separate GPRS module. As shown in FIG. 5, the GPRS module 290 is connected to the cloud platform 280 to implement interaction with the cloud platform.

In order to realize human-computer interaction, the central control circuit is also respectively connected to the display screen and the button circuit; the controller 110 is configured to receive the control signal input by the button circuit and output the operation data to the display screen. The user can input information and control commands through the first button, and the corresponding interface is displayed on the display for the user to view. Preferably, the first display screen and the first button are installed in the electrical cabinet. A first button 300 and a first display screen 310 are shown in FIG. 5, respectively connected to a central control circuit.

A door cabinet status indicator is also disposed outside the cabinet door of the above electrical cabinet, and is configured to indicate the operating state of the system. The status indicator of the door cabinet includes at least three types of power indicator lights, a host running light, and a fan running light; when the host of the system is powered on, the power indicator light is on, otherwise it is off; when the host of the system is running, the host running light is on, otherwise It is off; when the system's smoke exhausting machine is running, the fan running light is on, otherwise it is off. The controller 110 is connected to each door cabinet status indicator, and the door cabinet status indicator is configured to indicate the working state of the system. As shown in Figure 5, the door cabinet status indicator 320 is coupled to the central control circuit.

Referring to the pin diagram of the controller 110 shown in FIG. 6, the controller 110 adopts the following model of the micro control unit MCU-MB95F778-64PIN as an example. There are shown a plurality of pins that are connected to components such as the first wireless module 120, the temperature and humidity sensor, the purifier, the smoke evacuation host, and the like. Also shown in FIG. 6 is a programming circuit that is coupled to pin 14 and configured to write a pre-programmed program to control the sequential operation of the various functional modules, the programs being programmed in accordance with the mode of operation of the various functional modules.

Referring to the driving circuit diagram of the first wireless module 120 shown in FIG. 7, including the LoRa first wireless module 120 and the SIPEX485 communication device, the driving circuit is connected to the

pins

8, 9, 10 of the controller 110, and respectively transmits 485 receiving. , 485 transmit and 485 enable signals. The driving circuit of the first wireless module 120 performs communication with each terminal device, including collecting data and issuing control commands.

Referring to the schematic diagram of the driving circuit of the frequency converter shown in FIG. 8, the left side of the circuit is connected with the controller 110, and the right side is connected with the smoke exhausting host, wherein 485 receiving, 485 sending and 485 enabling respectively correspond to the connecting

controllers

10 and 6 respectively. , 7 pins.

Referring to the schematic diagram of the driving circuit of the load shown in FIG. 9, the load may be a smoke exhausting host, a purifier or a temperature control component, and the load driving circuit may include a plurality of loads to drive the various types of loads described above. The load driving circuit can be connected to the

pins

27, 28, 29, 30 of the controller 110 shown in FIG. 6 according to the type of load it drives, and is used to control the smoke exhausting machine, the ventilation, the temperature control, and the smoke exhausting machine are respectively low. And purifier / smoke exhaust host.

Referring to the schematic diagram of the temperature and humidity sensor driving circuit shown in FIG. 10, the driving circuit is connected to the temperature and humidity sensor (including the temperature sensor and the humidity sensor), and the connection mode of the driving circuit and the controller 110 is also shown. The four pins correspond to the temperature sensor and the humidity sensor, respectively, and are connected to the

pins

2, 3, 11, and 12 of the controller 110, respectively.

Referring to the schematic diagram of the driving circuit of the gate switch shown in FIG. 11, the driving circuit is connected to the gate pin of the controller 110, corresponding to the pin number 17 in FIG. The drive circuit is also connected to the gate switch, shown as CN4 in Figure 11, receiving the status information of the gate switch.

The central control circuit provided by the embodiment of the present application integrates the controller 110, the first wireless module 120, the fan drive circuit and the purifier drive circuit, and the controller 110 can control the operation of the smoke exhausting host and the purifier, and strengthen the components. The information interaction between the two systems improves the operating efficiency of the entire system; and the controller 110 is also connected with a gate switch, a temperature and humidity sensor, and a cloud platform, which can effectively control various components to ensure normal operation of the system, and also provides remote interaction and control functions. The user is convenient to use; at the same time, the integrated control mode does not require the user to separately set parameters or change the switch state at each component, and the control is convenient.

In yet another embodiment of the present application, a central air purification system is also provided, including the central control circuit provided by the above embodiments. Referring to the structural block diagram of the central air purification system shown in FIG. 12, the smoke exhausting host 910, the smoke exhausting terminal 920, the purifier 930 and the central control circuit 940; the central control circuit 940 is configured to be activated according to the exhaust terminal. Control the smoke exhaust main engine and purifier operation.

Exemplarily, in a practical application, the first wireless module 120 is configured to send a status acquisition request signal to the smoke exhaust terminal of the plurality of floor air inlets, and receive a response signal sent by the smoke exhaust terminal, The response signal includes at least switch machine state information and device information of the smoke exhaust terminal disposed at a plurality of floor air inlets in the flue; and the controller 110 is configured to determine the device information according to the smoke exhaust terminal in the power on state. Deriving a target wind pressure and a target air volume of the flue gas in the flue, determining a target frequency of the fan disposed at the flue port by using a preset wind pressure air volume curve according to the target wind pressure and the target air volume, and transmitting the target frequency to the frequency converter a control signal; the frequency converter 210 is configured to drive the smoke evacuation host 910 to operate according to the target frequency, thereby discharging the flue gas discharged by the smoke exhaust terminal in the flue; the power supply module 15, configured It becomes the wireless module, the main control module, the inverter and the smoke exhausting host 910. The first EMC module 240 is configured to filter the electromagnetic interference by the frequency converter; the wind pressure sensor is connected to the main control module, and the plurality of wind pressure sensors are installed at the floor air inlet, and are configured to be generated to the main control module. Collecting wind pressure measurement information at the air inlet of the floor; the air volume sensor is connected to the main control module, and the plurality of air volume sensors are installed at the air inlet of the floor, and configured to be collected to the main control module Air volume measurement information at the air inlet of the floor.

At present, the check valve of some smoke exhausting terminals (for example, the unpowered hood) cannot actively control the opening and closing states and the degree of opening. For this reason, in the embodiment of the present application, a control circuit is also provided, and the control circuit is applied. At the smoke exhaust terminal. Referring to the structural block diagram of the control circuit shown in FIG. 13, the main control chip 401 and the valve motor drive circuit 400 are included.

The valve motor drive circuit 400 is coupled to the valve motor and configured to control the start, stop, and steering of the valve motor based on a control signal sent by the master chip 401. The main control chip 401 includes a valve motor interface and a gear signal interface; the valve motor interface is connected to the input end of the valve motor drive circuit 400, and sends a control command to the input terminal; the gear position signal interface is configured to receive the gear position Signal, the gear position signal may be a gear position command input by a user through a button, or may be a gear position information obtained from a system command or a system running state. In the main control chip 401, according to the functional requirements of each component, a stable and reliable program is programmed to control the orderly operation of each functional module.

The main control chip 401 receives the gear position signal through the gear position signal interface, and generates a control signal to the valve motor drive circuit 400 to control the valve motor to start. The main control chip 401 generates a control signal according to different gear position signals to control the angle at which the valve motor drives the valve to open, for example, when the gear position is 1, the valve opening angle is 60°; when the gear position is 2, the valve opening angle is 75°; When the gear position is 3, the valve opens at an angle of 90°.

The valve motor driving circuit 400 in the control circuit is provided with a relay or a thyristor rectifying element; the main control chip 401 is connected with a relay or a thyristor rectifying element through a valve motor interface to control the valve motor to be reversed.

The following describes how the user enters the gear signal through the case:

In order to receive the gear position command input by the user, the above control circuit further includes a button driving circuit 410, which is a structural block diagram of the control circuit shown in FIG. The output end of the button driving circuit is connected with the gear position signal, and outputs the collected gear position signal to the gear position signal interface. The user selects the gear position by clicking the gear button, which is the exhaust position of the fan. In the non-powered hood in this embodiment, there is no exhaust fan inside the hood, and the fan is installed outdoors (for example, the roof), and the user can select an appropriate gear position according to the need of the exhaust smoke, and the main control chip 401 is After receiving the gear position signal, the control valve motor rotates to drive the valve to open the corresponding angle. Generally, the gear position of the hood includes 3-4 or so, the angle of the valve is 0°-90°, 0° is fully closed, and 90° is fully open, and multiple gear angles can be evenly divided according to the number of gear positions. When the user closes the exhaust terminal (or selects the 0 position), the control valve motor rotates to drive the valve to close (the gear angle is 0°).

Referring to the connection diagram of the control circuit shown in Fig. 15, a control circuit is included which is coupled to the valve motor 430 and is configured to control the operation of the valve motor 430; it further includes a second button 440 which is also coupled to the control circuit.

The above control circuit is also connected to the second EMC module 450 in consideration of EMC interference. The second EMC module 450 can include a reactor and a filter, or a customized EMC filter plate. Among them, the reactor can suppress harmonics and weaken the influence of power supply voltage imbalance; the filter can reduce and suppress electromagnetic interference. Also shown in FIG. 15 is a second EMC module 450 that is coupled to a switching power supply 460. The switching power supply 460 is configured to supply power to the control circuit. Specifically, the switching power supply rectifies the 220V AC voltage into 12V and 5V DC power, and supplies power to each weak power function module.

As shown in FIG. 15, the second wireless module 402 is connected to the control circuit. Specifically, the main control chip 401 of the control circuit includes a wireless interface, and the wireless interface is connected to the second wireless module 402. Further, the second wireless module 402 can be wirelessly connected to the host, configured to send the operating state and the fault state of the valve motor and the valve to the host, and receive information sent by the host to implement information interaction. The host is generally an outdoor host installed on the roof of the building, and is connected to a plurality of smoke exhaust terminals to provide exhaust power.

Also shown in FIG. 15 is a second display screen 470 coupled to the control circuit for enabling human-computer interaction with the second display screen 470 via the second button 440. Also shown in Fig. 14 is a buzzer 480 connected to the control circuit. Whenever there is a button operation, the buzzer beeps once to assist the user in confirming that the input is successful. It can be understood that the above button not only includes the button indicating the gear position, but also includes other function buttons, such as power on, power off, lighting, etc., when the button is pressed, the buzzer will beep once.

Referring to Figure 15, the control circuit is also coupled to illumination 490 and is configured to control the opening and closing of the illumination. For example, when the main control chip 401 detects the illumination button trigger, the illumination lamp is turned on; when triggered again, the illumination lamp is turned off.

The following describes how the control circuit obtains system commands or status:

In the existing smoke exhaust terminal machine, the user can control the fan gear position through the button, and the control circuit includes a fan control interface, and the fan control interface is connected with the AC fan, and the rotation speed of the AC fan is controlled by the control signal. In the above existing exhaust terminal, the control circuit provided in the embodiment can also be connected to achieve the purpose of controlling the opening and closing angle of the valve according to the control command outputted by the fan control interface.

Referring to the structural block diagram of the control circuit shown in FIG. 16, a fan signal receiving circuit 420 is further included in the above control circuit. The input end of the fan signal receiving circuit 420 is connected to the fan control interface of the smoke exhaust terminal machine, and receives the fan control signal output by the fan control interface; the output end of the fan signal receiving circuit 420 is connected with the gear position signal, and the fan is connected The control signal is output to the gear signal interface.

Referring to the connection diagram of the control circuit shown in FIG. 17, the left part is the control circuit of the existing smoke exhaust terminal, and the right part is the control circuit of the unpowered hood provided by this embodiment, which is the same as that in FIG. Part will not go into details. There is shown a fan signal receiving circuit 420 between the two, the output of the fan signal receiving circuit 420 is interfaced with the gear signal, and the input of the fan signal receiving circuit 420 is connected to the fan control interface of the exhaust terminal. In Fig. 17, the existing exhaust terminal includes three gear positions as an example for description.

As shown in FIG. 17, the fan signal receiving circuit 420 further includes three photocouplers configured to isolate the high voltage and convert the gear position signal. The main control chip detects the fan gear through the optocoupler. According to different gear positions, the valve motor opening angle is controlled; when the gear position is 1, the valve angle is opened 60°; when the gear position is 2, the valve angle is opened 75°; when the gear position is 3, the valve angle is opened 90°.

The above control circuit obtains the system command or state through the fan control interface of the existing smoke exhaust terminal machine, and can be used to modify the existing smoke exhaust terminal machine, that is, the above control circuit and the electric non-return are installed in the existing smoke exhaust terminal machine. The valve controls the start of the valve motor according to the gear position signal to control the opening degree of the electric check valve.

During the use process, the control circuit automatically opens the angle of the corresponding gear position according to the switch condition of the smoke exhaust terminal, and automatically closes it, effectively avoiding the loss of pressure of the smoke exhaust terminal during the exhaust fumes, and also has the efficiency of the fume extraction. Significant improvement. Due to the motor drive control, the rotating torque is large, which can effectively avoid the problem that the valve piece cannot be opened due to oily viscosity, or cannot be closed due to excessive external suction force; when the oil suction and exhaust terminal is opened, it can effectively reduce The oil suction and smoke exhaust terminal hinders the discharge of the fumes, and also reduces the pressure loss, and improves the ability of the oil suction and exhaust terminal to suck and drain the fumes; when the suction and exhaust terminal is turned on, the electric non-return is changed when the air volume is changed. The valve can adjust the opening and closing degree of the check valve according to the changed air volume of the smoke exhaust terminal to change the ventilation area to achieve energy saving, emission reduction and anti-return effect.

Refer to the pin diagram of the main control chip shown in Figure 6. The main control chip uses the following model STM8S003F3 as an example. There are shown a plurality of pins that are connected to components such as the valve motor drive circuit, the key drive circuit, the fan signal receiving circuit 420, the switching power supply, and the second wireless module 402. A pre-programmed program is written in the main control chip to control the orderly operation of each functional module, and the above program is correspondingly written according to the operation mode of each functional module. Since the second wireless module 402, the button driving circuit, the switching power supply, and the like can all adopt the existing conventional design, the description will be omitted herein, and only the fan signal receiving circuit 420 will be described.

Referring to the schematic diagram of the fan signal receiving circuit 420 shown in FIG. 18, the output ends thereof are respectively connected to the pins IN-L, IN-H and IN-M of the main control chip, respectively corresponding to the 13, 14, 15 of the main control chip. The pin and the input end are connected with the fan control interface of the smoke exhaust terminal (CH6 in the figure), and further include an optocoupler circuit corresponding to the three gear positions, configured to convert and detect the fan gear position of the smoke exhaust terminal machine.

The control circuit provided by the embodiment of the present invention is applied to a powerless hood, the powerless hood includes an electric check valve, and the main control chip can control the valve motor of the electric check valve according to the gear position signal received by the gear position signal interface. Start, according to different gear positions to control the different opening degree of the check valve, the valve plate can automatically open the angle of the corresponding gear position, and automatically close, effectively avoiding the loss of pressure in the smoke exhausting machine during the process of exhausting smoke, the efficiency of oil absorption There is also obvious improvement; the motor drive control has a large rotating torque, which can effectively prevent the valve piece from opening due to oily viscosity, or the problem that the valve cannot be closed due to excessive external suction; when the air volume is changed, the electric motor is stopped. The return valve can adjust the opening and closing degree of the check valve according to the changed air volume of the smoke exhaust terminal to change the ventilation area to achieve energy saving, emission reduction and anti-return effect.

In yet another embodiment of the present application, an unpowered hood is also provided, including the control circuit provided by the above embodiments. Referring to the structural block diagram of the unpowered hood shown in FIG. 20, the hood body 500, the air duct 510, the electric check valve 520, and the control circuit 540 are included. The electric check valve includes a valve motor, and the control circuit controls the start of the valve motor according to the gear position signal to control the opening degree of the electric check valve.

At present, after the check valve is turned on and off several times by the motor control, the valve opening angle may deviate from the desired angle, and the cumulative error gradually increases as the valve plate is opened and closed multiple times. The closure is not strict, causing the smoke in the public flue to enter the kitchen, causing the phenomenon of cross-smoke odor, polluting the kitchen environment, which is not conducive to the health of the occupants, and brings great inconvenience to the living of the occupants. In the example, a check valve angle control device is also provided, and the check valve angle control device is applied to the smoke exhaust terminal. Referring to the structural block diagram of the check valve angle control device shown in FIG. 21, the check valve angle control device includes: a first detection switch 600, a second detection switch 610, a main control module 620 and a motor 630;

The first detecting switch 600 is configured to generate a first detection signal when the valve piece of the check valve leaves the initial position, and the valve plate is fixed to the rotating shaft of the motor.

The second detecting switch 610 is configured to generate a second detection signal when the valve piece of the check valve reaches the preset position.

In the embodiment of the present application, the first detecting switch and the second detecting switch may also be configured to position the valve piece and calibrate the current position of the recorded valve piece according to the actual position of the valve piece.

The main control module 620 is configured to send a pulse signal to the motor, and when receiving the first detection signal sent by the first detection switch set at the initial position, recording the first receiving time; when receiving the setting in the preset And acquiring a second receiving time when the second detecting signal sent by the second detecting switch at the position; acquiring the second pulse quantity of the pulse signal sent between the first receiving time and the second receiving time, according to Determining, by the preset angle and the second pulse quantity, a preset angular velocity of the motor; and determining, according to the to-be-rotated angle of the valve piece and the preset angular velocity, driving the motor to rotate the waiting a first pulse number of the pulse signal of the rotation angle; sending the first pulse number of pulse signals to the motor;

The motor 630 is configured to rotate in accordance with the pulse signal.

In still another embodiment of the present application, as shown in FIG. 22, the apparatus further includes: a zero-crossing detection circuit 640, a first optical coupler 650, a second optical coupler 660, a forward-rotation switch 670, and a reverse switch. 680 and a third wireless module 690.

The zero-crossing detection circuit 640 is configured to perform zero-crossing detection on the AC power source, and when the waveform of the AC power source is switched from a negative half cycle to a positive half cycle, a forward rotation notification signal is generated, and the waveform of the AC power source is from a positive half cycle. When switching to a negative half cycle, a reverse notification signal is generated;

The forward rotation control end of the main control module 620 is connected to the control end of the forward rotation switch 670 through the first optical coupler 650, and the input end of the forward rotation switch 670 is connected to an alternating current power source, and is configured to be When receiving the forward rotation notification signal, the main control module 620 controls the forward rotation switch 670 to be turned on, sends a pulse signal to the motor 630, and drives the motor 630 to rotate in the forward direction;

In the embodiment of the present application, since the zero-crossing detecting circuit is configured to detect whether the waveform of the alternating current power source is zero-crossing, each time the waveform of the alternating current power source is detected to be converted from a negative half cycle to a positive half cycle, the forward switch is controlled to be turned on. The motor transmits a positive pulse signal. When multiple pulse signals need to be provided for the motor, the main control module needs to control the forward rotation switch to be turned on multiple times when the forward rotation notification signal is detected multiple times.

The inverting control end of the main control module 620 is connected to the control end of the inverting switch 680 through the second optical coupler 660, and the input end of the inverting switch 680 is connected to an alternating current power source, and is configured to be When receiving the reverse notification signal, the main control module 620 controls the reverse switch 680 to be turned on, sends a pulse signal to the motor 630, and drives the motor 630 to rotate in the reverse direction;

The principle of reverse rotation and forward rotation is basically the same. It is not repeated here. The forward and reverse rotation of the motor can respectively correspond to the opening and closing of the valve piece, specifically the opening of the positive rotation control valve piece or the closing of the forward rotation control valve piece. This application is not limited and can be set according to actual needs.

In addition, the forward rotation switch and the reverse rotation switch can be two-way thyristor or relay, etc. The main control module in Fig. 4 can also directly serve as a main control module in the hood, and the main control module can be set with The gear position of the range hood selects the connection end of the button connection. At this time, the smoke exhaust position can be obtained by wire, and the main control module is not used as the main control module in the range hood, that is, the check valve is installed in the public flue. When the oil hood is exhausted, the smoke exhaust position opened on the hood can be obtained wirelessly with the user.

The third wireless module 690 is coupled to the main control module 620 and configured to receive a compensation angle for determining an angle to be rotated.

In still another embodiment of the present application, there is also provided a check valve comprising the check valve angle control device as described in the foregoing device embodiment, the valve piece of the check valve being coaxial with the rotating shaft of the motor Fixed, the rotating shaft drives the valve plate to rotate when rotating.

With reference to FIG. 2, based on the foregoing embodiment, in another embodiment of the present application, a wind volume adjustment method is further provided, including the following steps: parameter setting: the controller receives the user setting in the control panel. Preset parameters; start-up operation: open the smoke exhaust terminal 1, the smoke exhaust host 7 runs at a fixed frequency; parameter analysis: the controller receives the actual parameters in the exhaust pipe branch 4 collected by the monitoring component 3, and sets the actual parameters and preset parameters Directly perform intelligent analysis and judgment; air volume adjustment: the controller controls the adjusting component 2 to adjust the air volume in the exhaust pipe branch 4 according to the result of the intelligent analysis and judgment. If the actual parameter is equal or approximately equal to the preset parameter, the controller controls the adjusting component. 2 Ending the adjustment, if the preset parameter cannot be reached by the adjustment of the adjusting component 2, the controller adjusts the frequency of the smoke exhausting machine 7 so that the actual parameters are adapted to the preset parameters, that is, equal or approximately equal.

The beneficial effects of this embodiment:

The air volume adjusting method provided in this embodiment has the same technical effects and advantages as the above-mentioned smoke exhausting device. When in use, the air volume in the exhaust pipe branching pipe 4 can be adjusted by the adjusting component 2 and the smoke exhausting host 7 to make the smoke exhausted on each floor uniform.

With reference to FIG. 15, on the basis of the foregoing embodiment, in the air volume adjustment method provided in this embodiment, the controller is provided with an identification device and a sorting device, and the plurality of monitoring components 3 are respectively connected to the controller through different ports. The identification device is configured to identify different access ports and transmit signals to the sequencing device, the sequencing device being configured to adjust the air volume at the plurality of monitoring elements 3 in a set order. Preferably, the order set in the controller is sequentially adjusted from a high floor to a low floor.

The effect of this embodiment:

The identification device recognizes different access ports, and then sorts the monitoring elements 3 by the sorting device and sequentially processes them in a predetermined order. In the process of adjusting the actual parameters, there is no problem such as disorder of the adjustment order, so that the adjustment steps are orderly. Stable.

On the basis of the foregoing embodiments, preferably, the embodiment of the present application further provides a method for adjusting the air volume, and the main steps are substantially the same as those in the foregoing embodiment, and the difference is that before the smoke exhaust terminal 1 is turned on, the adjusting component is 2, that is, the opening degree of the air volume adjusting valve is adjusted to the maximum. After the terminal is turned on, if the opening degree of the air volume adjusting valve is maximum, the actual parameter is still less than the preset parameter, and the controller directly controls the exhausting machine 7 to perform frequency adjustment, so that The actual parameters are equal or approximately equal to the preset parameters.

The effect of this embodiment:

Before the smoke exhaust terminal 1 is turned on, the opening degree of the air volume adjusting valve is adjusted to the maximum, and it is only necessary to judge whether the actual parameter is less than the preset parameter requirement, and if it is adjusted to the maximum, it is still not satisfied, and the smoke exhausting machine 7 is directly adjusted. The frequency can be used, and the adjustment step becomes simpler without having to adjust the air volume adjustment valve and perform various logic operations through the central processing unit.

On the basis of the foregoing embodiments, in another embodiment of the present application, the embodiment of the present application further provides another air volume adjustment method, and the main steps are substantially the same as the steps in the foregoing embodiment, and the difference is that the exhaust smoke is turned on. Before the terminal 1, the opening degree of the adjusting component 2, that is, the air volume adjusting valve is adjusted to a minimum. After the terminal is turned on, if the opening degree of the air volume adjusting valve is minimum, the actual parameter is still greater than the preset parameter, and the controller directly controls the exhausting of the smoke. The host 7 performs frequency adjustment such that the actual parameters are equal or approximately equal to the preset parameters.

The effect of this embodiment:

Before the smoke exhaust terminal 1 is turned on, the opening degree of the air volume adjusting valve is adjusted to a minimum, and it is only necessary to judge whether the actual parameter is greater than the preset parameter requirement, and if it is adjusted to the minimum, it is still not satisfied, and the smoke exhausting machine 7 is directly adjusted. The frequency is sufficient, and the adjustment steps are made simpler by reducing the air volume control valve and performing various logic operations through the central processing unit.

At present, there is a mismatch between the amount of ventilation produced by the smoke exhausting unit in the central air purification system and the amount of smoke exhausted during operation. For example, when the exhaust volume produced by the smoke exhausting unit is greater than the amount of exhausted smoke to be discharged, There may be overcapacity, resulting in waste of energy; during the peak cooking season, the hoods on each floor actively smoke through the built-in exhaust mains to the public centralized flue, and the accumulated pressure in the public concentrated flue is large. The ventilation amount is smaller than the amount of exhaust gas to be discharged, so that the smoke exhausting effect of the hood in use is deteriorated. For this reason, in another embodiment of the present application, as shown in FIG. 24, the parameter analysis is as follows: The monitoring component collects the actual parameters in the exhaust pipe and transmits signals to the controller. The controller directly analyzes the actual parameters and the preset parameters, and may include the following pre-executed steps.

In step S101, the controller records the test wind pressure and the test air volume generated in the concentrated flue when the smoke exhausting machine operates at a plurality of test frequencies.

In this step, the smoke exhausting machine can be operated at various test frequencies, and the test wind pressure and the test air volume of the smoke exhausting machine at the air inlet of the concentrated flue are measured at different test frequencies.

In step S102, the controller draws a wind pressure air volume curve according to the test wind pressure and the test air volume for each of the test frequencies.

As shown in FIG. 25, a wind pressure air volume curve is shown in an exemplary embodiment of the present application. In FIG. 25, the abscissa indicates the air volume, the ordinate indicates the wind pressure, and the plurality of curves respectively indicate that the smoke exhausting machine respectively operates at 25 Hz, 30 Hz. The air volume curve of the smoke exhausting machine drawn at frequencies of 35 Hz, 40 Hz, 45 Hz, and 50 Hz.

The parameter analysis: the actual parameters in the exhaust pipe branch are collected by the monitoring component and the signal is transmitted to the controller, and the controller directly performs the intelligent analysis and judgment on the actual parameter and the preset parameter, as shown in FIG. 26, and the following steps can be referred to.

In step S201, the controller acquires the on/off state information of the smoke exhaust terminal installed in the plurality of floor air inlets in the centralized flue and the device information of the smoke exhaust terminal.

In the embodiment of the present application, the concentrated flue can refer to a public concentrated flue of a high-rise residential building, and the smoke exhausting device can be referred to as a range hood, etc., and the floor air inlet is an exhaust port for the smoke hood to exhaust the concentrated flue, each The air inlet of the floor can be connected to the exhaust hood of at least one hood, and the state of the switch of the smoke exhaust terminal can be obtained by the main control module actively to the exhaust terminal or the management personnel at the required time, or can be pre-installed in the exhaust smoke. The status monitoring device can send the status control device to the main control module wirelessly after automatically detecting the on/off state of the exhaust device; or the household manually presses the status monitoring device when using the exhaust device. Thereafter, the condition monitoring device transmits wirelessly and the like. The equipment information may refer to the position information of the installation floor of the hood, the exhaust air volume of the smoke exhauster, and the wind pressure.

In this step, the main control module may send an information acquisition request signal to the smoke exhaust terminal of the plurality of floor air inlets, and then receive a response signal sent by the plurality of smoke exhaust terminals according to the state acquisition request signal. The response signal includes at least the switch state information and device information.

In step S202, when there is the smoke exhaust terminal in the power-on state, the controller determines, according to the device information of the smoke exhaust terminal in the power-on state, the target wind pressure and the target of exhausting the smoke in the concentrated flue. Air volume.

In the embodiment of the present application, the device information includes installation information, smoke exhausting host flow information, and smoke exhausting host pressure information; and the step S202 includes the following steps.

Determining, according to the installation information, a distance between a floor air inlet of each of the smoke exhaust terminals in the power-on state and the smoke exhausting host. Since the floor height of the building is fixed, assuming that the air inlets of the concentrated flue of each floor are all set at the same height, the distance between the air inlet of the concentrated flue of each floor and the exhaust main engine can be calculated.

The wind pressure coefficient and the air volume coefficient of the flue gas discharged from the smoke exhaust terminal of each floor are determined according to the distance. Since the public concentrated flue generally has only one exit located at the top of the building, this structural feature causes the internal pressure of the concentrated flue to increase from top to bottom, the position pressure on the high floor is small, and the position pressure on the lower floor is large, so in practice In the application, the wind pressure coefficient and the air volume coefficient can be set according to the height of the floor air inlet.

And calculating, according to the wind pressure coefficient, the air volume coefficient, the smoke exhaust host flow information, and the smoke exhaust host pressure information, a floor wind pressure and a floor air volume of the smoke exhausting terminal of each floor. For each floor, the wind pressure coefficient can be multiplied by the smoke main engine pressure information to obtain the floor wind pressure of the floor, and the air volume coefficient is multiplied by the smoke exhaust host flow information to obtain the floor air volume of the floor.

The sum of the floor wind pressures of the respective floors is determined as the target wind pressure, and the sum of the floor air volumes of the respective floors is determined as the target air volume.

In a further embodiment of the present application, the device information includes wind pressure measurement information collected by a wind pressure sensor disposed at an air inlet of each floor and air volume measurement information collected by the air volume sensor; and the step S202 may include the following steps. .

Determining, according to the wind pressure measurement information, a floor wind pressure of the smoke exhaust terminal of the floor where the wind pressure sensor is located, the air volume measurement information determining a floor of the smoke exhaust terminal of the floor where the air volume sensor is located Air volume

In step S203, the controller determines, according to the target wind pressure and the target air volume, a target frequency of the smoke exhausting host disposed at the centralized flue port by using a preset wind pressure air volume curve.

According to the information of the switch, whether the smoke exhaust terminal is currently in the power-on state, and when there are the smoke exhaust terminals in the power-on state in the plurality of smoke exhaust terminals connected to the centralized flue, as shown in FIG. 27, step S203 may include The following steps.

In step S2031, the controller determines a plurality of test wind pressures corresponding to the target air volume in the plurality of wind pressure air volume curves.

As shown in Fig. 25, a longitudinal straight line passing through the target air volume can be drawn first. This longitudinal straight line will form a plurality of intersections with the same abscissa (the abscissa is the target air volume) and the ordinates on the respective wind pressure air volume curves. The ordinate is the plurality of test wind pressures corresponding to the target air volume. If the target wind pressure is 505 and the target air volume is 2200, then in Figure 25, the obtained test wind pressures are 545, 529, 510, 495, respectively. 475 and 458.

In step S2032, the controller separately calculates a deviation value between each of the plurality of test wind pressures and the target wind pressure.

In step S2033, the controller determines a wind pressure air volume curve in which the test wind pressure at which the minimum deviation value is obtained is calculated.

For example, since the target wind pressure is 505 and the deviation between the test wind pressures 510 and 505 is the smallest, it can be determined that the wind pressure air volume curve of the 505 is the wind pressure air volume curve of the smoke exhausting machine operating at 40 Hz.

In step S2034, the controller determines a test frequency corresponding to the wind pressure air volume curve in which the test wind pressure is located as the target frequency. The 40 Hz is determined as the target frequency.

Based on the same principle as step S2031 and step S2034, in still another embodiment of the present application, step S203 may include the following steps.

Determining, in a plurality of the wind pressure air volume curves, a plurality of test air volumes corresponding to the target wind pressure; respectively calculating a deviation value between each of the plurality of test air volumes and the target air volume; Determining a wind pressure air flow curve in which the test air volume of the minimum deviation value is calculated; determining a test frequency corresponding to the wind pressure air volume curve in which the test air volume is located as the target frequency.

Here, in Fig. 25, a horizontal straight line passing through the target wind pressure is formed, and the horizontal straight line and the plurality of wind pressure air volume curves are formed into at least one intersection point, and then the test air volume having the smallest deviation from the target air volume is selected among the formed intersection points. The frequency of the wind pressure air volume curve in which the selected test air volume is located is determined as the target frequency.

In step S204, the controller sends a control signal to the frequency converter, so that the frequency converter drives the smoke exhausting machine to operate according to the target frequency, thereby discharging the smoke discharged by the smoke exhausting terminal machine in the concentrated flue. gas.

At present, after the check valve is turned on and off several times by the valve motor control, the valve opening angle may deviate from the desired angle, and the cumulative error gradually increases as the valve plate is opened and closed multiple times. The film is not tightly closed, causing the smoke in the public flue to enter the kitchen, causing the phenomenon of cross-smoke odor, polluting the kitchen environment, which is not conducive to the health of the occupants, and brings great inconvenience to the living of the occupants. Based on this, the application is implemented. The invention provides a check valve control method, device and check valve, which can accurately measure the angular velocity of the valve motor, and then control the angle of the valve to be rotated according to the angular velocity to achieve precise control of the rotation angle of the valve plate, eliminating the cumulative Errors to prevent soot from entering the kitchen help to keep the kitchen air clean.

In order to facilitate the understanding of the embodiment, a check valve control method disclosed in the embodiment of the present application is first introduced in detail. As shown in FIG. 28, the check valve control method can be applied to the smoke exhaust terminal in the foregoing embodiment. In the main control chip of the machine, the method may include the following steps.

In step S301, the master chip acquires the angle of the valve to be rotated of the check valve.

In the embodiment of the present application, the valve plate is fixed to the rotating shaft of the valve motor. In practical applications, the rotating shaft of the valve motor may be a crankshaft or a straight shaft, and the rotating shaft of the valve motor drives the rotating shaft. The valve piece rotates synchronously, and the angle to be rotated needs the angle at which the valve piece rotates. For example, when the valve piece is required to be fully opened, the angle to be rotated is 90 degrees, and when the valve piece is required to be opened, the angle to be rotated can be 30 degrees. 45 degrees or 60 degrees, etc., can be set according to actual needs; when the valve is closed, it is assumed that the valve is rotated 60 degrees from the initial position when the valve is opened last time, then the angle to be rotated can be compared with the previous valve. The opening angle of the piece is the same, that is, the angle to be rotated is 60 degrees. Assuming that the last opening of the valve plate is from 30 degrees to 60 degrees, the angle to be rotated is also 60 degrees, that is, the valve needs to be recorded every time the valve piece is rotated. The current position of the sheet staying after the rotation, when it is necessary to further open the valve piece, it is necessary to continue to rotate in the direction of opening the valve piece based on the current position, and when it is necessary to close the valve piece, it is necessary to Opposite rotational direction of closing the valve sheet basis.

In this step, the exhausting position of the smoke exhaust terminal opened by the user may be obtained by wire or wirelessly, and the reference angle corresponding to the exhausting position is determined in the preset correspondence table; The terminal of the worker sends a compensation angle acquisition request; when the compensation angle sent by the worker through the terminal is received by the wireless module, the sum of the reference angle and the compensation angle is calculated to obtain the to-be-turned angle.

In step S302, the main control chip determines a first pulse for driving the valve motor to rotate the pulse signal to be rotated according to the to-be-rotated angle and a preset angular velocity obtained by pre-measuring the valve motor. Quantity.

In this step, an integer part of the quotient of the angle to be rotated and the preset angular velocity is determined as the first number of pulses.

In step S303, the main control chip sends the first pulse number of pulse signals to the valve motor.

In step S303, the angle at which the valve shaft of the valve motor drives the check valve to rotate is the angle to be rotated.

As shown in FIG. 29, in still another embodiment of the present application, before the step S101 in the foregoing embodiment, the method further includes the following steps.

In step S401, the main control chip sends a pulse signal to the valve motor to cause the rotating shaft to rotate the valve piece from the initial position.

In this step, the number of transmitted pulse signals should be greater than or equal to the number of pulses required for the valve to rotate from the initial position to the preset position of the valve motor.

In step S402, when receiving the first detection signal transmitted by the first detection switch set at the initial position, the master chip records the first reception time.

In the embodiment of the present application, the first detecting switch may be an infrared pair tube or the like.

In this step, the first detecting switch transmits the first detecting signal at the time when the valve piece is detected to leave the initial position, so that when the first detecting signal is received, the first receiving time at which the first detecting signal is received can be recorded.

In step S403, when receiving the second detection signal sent by the second detection switch set at the preset position, the main control chip records the second reception time.

In the embodiment of the present application, the second detecting switch may refer to an infrared pair tube or the like.

In this step, when the second detecting switch detects that the valve piece reaches the preset position, the second detecting signal is sent, so when the second detecting signal is received, the second receiving receiving the second detecting signal can be recorded. time.

In step S404, the master chip acquires the second pulse number of the pulse signal transmitted between the first receiving time and the second receiving time.

In the embodiment of the present application, the valve piece is rotated from the initial position to the preset position by a preset angle, that is, when the valve plate rotates around the axis, the valve piece needs to rotate before being rotated from the initial position to the preset position. Set the angle.

In this step, the number of pulse signals transmitted to the valve motor from the first reception time to the second reception time, that is, the number of second pulses, can be recorded by means of a counter or the like.

In step S405, the master chip determines the preset angular velocity of the valve motor according to the preset angle and the second pulse number.

In this step, an integer part of the quotient of the preset angle and the second pulse number may be determined as the preset angular velocity.

In a further embodiment of the present application, a check valve control method is also provided. The method and the technical effects of the method provided by the embodiments of the present application are the same as the foregoing method embodiments. Where the example is not mentioned, reference may be made to the corresponding content in the foregoing method embodiments. The method includes the following steps.

The main control chip sends a pulse signal to the valve motor, so that the shaft of the valve motor drives the valve to rotate from the initial position.

The master chip records the first reception time when receiving the first detection signal transmitted by the first detection switch set at the initial position.

The master chip records the second receiving moment when receiving the second detection signal transmitted by the second detecting switch set at the preset position.

The master chip acquires the second pulse quantity of the pulse signal sent between the first receiving time and the second receiving time, and the valve piece rotates from the initial position to the preset position by a preset angle .

The master chip determines a preset angular velocity of the valve motor according to the preset angle and the second number of pulses.

In still another embodiment of the present application, there is also provided a check valve comprising the check valve angle control device as described in the foregoing device embodiment, the valve plate of the check valve being the same as the shaft of the valve motor The shaft is fixed, and the rotating shaft drives the valve piece to rotate when rotating.

At present, there are communication problems between the control system and the system of the smoke exhaust terminal, such as a central air conditioning system composed of a control system and a smoke exhaust terminal, a central purification system, a ventilation system, or a range hood system. To this end, in another embodiment of the present application, a two-way wireless communication method is also provided. Referring to the flowchart of the two-way wireless communication method shown in FIG. 30, the system for controlling the system and the plurality of smoke exhaust terminals, the control system The heartbeat packet is cyclically transmitted with a plurality of smoke exhausting terminals at regular intervals, and the method includes the following steps:

Step S11: The second exhaust terminal receives the control system heartbeat packet sent by the control system and the first exhaust terminal heartbeat packet sent by the first exhaust terminal.

In a system including at least one control system and a plurality of smoke exhaust terminals, the two-way communication can be implemented by periodically transmitting a heartbeat packet, which carries both information to be exchanged and information to verify whether it is online. Specifically, the control system and the plurality of smoke exhausting terminals cyclically transmit the heartbeat packets in a fixed interval of time intervals. Referring to the system communication sequence diagram shown in FIG. 31, the communication sequence of the control system and the plurality of smoke exhaust terminals is shown. The communication sequence may be in accordance with the control system, the nearest smoke exhaust terminal, and the farth exhaust terminal. The process is carried out after all the control systems and the smoke exhaust terminal have completed the transmission of a heartbeat packet. According to actual application requirements, the above fixed time period can be 2s.

The control system heartbeat package includes control system information, and the first exhaust terminal heartbeat package includes first exhaust terminal information. The first exhaust terminal and the second exhaust terminal only distinguish the two as different exhaust terminals in the plurality of exhaust terminals, and do not represent the importance or positional relationship between the two.

The control system and the first exhaust terminal perform the heartbeat packet transmission in the order in which it is the turn of the heartbeat packet. Specifically, the transmission is performed in a manner of broadcasting to all of the smoke exhaust terminals and the control system or selecting a specific smoke exhaust terminal and the control system to transmit. After the second exhaust terminal receives the control system information, the second exhaust terminal performs information update according to the control system information, including replacing the control system information with the original control system information in the second exhaust terminal. . The second control system not only receives the control system heartbeat packet sent by the control system, but also receives the first exhaust terminal heartbeat packet sent by the first exhaust terminal to realize information sharing with the first exhaust terminal, that is, the first The smoke evacuation terminal heartbeat packet can be received by the second exhaust terminal and sent to the control system.

In step S12, the second exhaust terminal machine broadcasts the second exhaust terminal heartbeat packet to the control system and the other exhaust terminal.

The second exhaust terminal heartbeat package includes control system information, first exhaust terminal information, and second exhaust terminal information. As shown in FIG. 31, the heartbeat packet broadcast is performed upon reaching the transmission time of the second exhaust terminal.

When the second exhaust terminal broadcasts the communication packet, the control system information, the first exhaust terminal information and its own second exhaust terminal information are packaged and transmitted, and the information is cleared after being sent. Correspondingly, when receiving the information of any exhaust terminal, the other exhaust terminal performs the forwarding of the information of the exhaust terminal when the heartbeat packet is sent.

The heartbeat package of the smoke exhaust terminal may include fault information of the smoke exhaust terminal, and the heartbeat package of the control system may include the operation of the entire system that is controlled by the control system. Each of the smoke exhaust terminals updates the control system information when receiving the control system information.

In the two-way wireless communication method provided by the embodiment of the present application, the control system and the plurality of smoke exhausting terminal machines cyclically transmit the heartbeat packets in a fixed interval of time interval, and after the smoke exhausting terminal machine receives the heartbeat packets of other smoke exhausting terminal machines, the row The cigarette terminal machine performs the forwarding of information in the heartbeat package, so that the two-way interaction between the control system and the smoke exhaust terminal machine can be realized, and the control system information and the information of the smoke exhaust terminal information can be forwarded between the smoke exhaust terminal machines. Therefore, when a cigarette exhaust terminal can not directly communicate with the control system or the smoke exhaust terminal is in a state of disconnection from the control system, the information can be shared with other smoke exhaust terminals to realize interaction with the control system, and the row is improved. The communication success rate between the cigarette terminal and the control system.

Taking into account the sudden change of the operating state of the exhaust terminal, the probability of occurrence is low, but the real-time requirement is high. At this time, the exhaust terminal is in the operating order according to the transmission sequence of the above control system and the exhaust terminal of the exhaust terminal. In the report, there is a problem that the real-time performance is not high. Therefore, in order to improve the real-time performance of the message transmission, refer to the flowchart of another two-way wireless communication method shown in FIG. 32. Based on the foregoing method, the method further includes the following steps:

Step S31, when the state of the second exhaust terminal is changed, the second exhaust terminal sends status information to the control system for the current fixed time period, so that the control system replies at the next time slice.

When the operating state of the exhaust terminal is changed, it needs to be reported to the control system as soon as possible, so the above fixed time period is divided into a plurality of equal time slices. For example, the fixed time period of the above 2s is divided into 10 time slices, each time slice has a length of 0.2 s, including 9 time starting points, and when the state of the second exhaust terminal is changed, the second exhaust terminal is The status information is transmitted during the current time slice of the current fixed time period, and the control system replies to the smoke exhaust terminal at the next adjacent time slice after receiving the status information. In this way, it is possible to avoid the simultaneous transmission of information at the same time by the slice control system and the smoke exhaust terminal, resulting in a wireless signal collision and a communication error.

In the case of a sudden change in the operating state of the exhaust terminal, there are cases in which the states of the plurality of exhaust terminals are simultaneously changed. To avoid the problem of the wireless signal collision caused by the simultaneous transmission of the information, see another bidirectional diagram shown in FIG. The flowchart of the wireless communication method further includes the following steps on the basis of the foregoing method:

In step S41, when the states of the plurality of smoke exhaust terminals are simultaneously changed, the state changed smoke exhaust terminal transmits the state information to the control system at different time slots of the current fixed time period.

For example, if two or more exhaust terminals in the system change state at the same time, if the same time slice is reported, wireless signals will collide. At this time, the smoke exhaust terminal needs to select different time slices when transmitting information. Preferably, the different time slices are not adjacent time slices, so that the control system can reply in the next time slice after receiving the first state information.

Specifically, the smoke terminal device whose state is changed transmits the state information to the control system according to the time slice number randomly assigned by the system. For example, when the smoke exhaust terminal x and the smoke exhaust terminal y state change, the system automatically assigns a 1-m (m maximum of 9) random number (for example, the smoke exhaust terminal x random number is 4, and the smoke exhaust terminal y is random The number is 7), then the smoke exhaust terminal x will report the status in the 4th time slice (0.8s after the current heartbeat), and the smoke exhaust terminal y will be in the 7th time slice (ie 1.4s after the current heartbeat) Status report.

It can be understood that, in the process that the smoke exhaust terminal waits to send the status information, there is also a situation in which the status of the other smoke exhaust terminal changes, and the status information is transmitted at different time slots of the next fixed time period. For example, if the smoke exhaust terminal y detects the status report information of the other smoke exhaust terminal before the 7th time slice, the state of the smoke exhaust terminal y is stopped during the fixed time period, and waits for the next fixed time period. , then redistribute the random number and re-report it.

In the two-way wireless communication method provided by the embodiment of the present application, in the process of information interaction between the control system and the plurality of smoke exhaust terminals, when the state of the smoke exhaust terminal changes, the fixed time period is divided into a plurality of equal time slices. In different time slices, the smoke exhaust terminal sends status information and the control system responds, which not only improves the real-time performance of the report and reply, but also avoids signal conflicts, and improves the communication success rate between the smoke exhaust terminal and the control system. .

Considering that multiple smoke exhaust terminals included in the system may not be in the same wireless coverage, the “destination reporting” technology is introduced, and each smoke exhaust terminal automatically searches for its own destination and reports it layer by layer until the control system receives it. information. Referring to the flowchart of another two-way wireless communication method shown in FIG. 34, based on the foregoing method, the method further includes the following steps:

Step S51, when the state of the second exhaust terminal is changed, the second exhaust terminal sends status information to the destination exhaust terminal, so that the destination exhaust terminal reports the status information to the control system.

Specifically, the second exhaust terminal determines the destination exhaust terminal based on the received signal stability of the heartbeat package of the other exhaust terminal and the distance between the other exhaust terminal and the control system. Each smoke exhaust terminal can automatically find a stable destination smoke exhaust terminal, and report the status information to the destination smoke exhaust terminal when reporting;

For example, the position of the smoke exhaust terminal and the smoke exhaust terminal are from the top to the bottom: control system, smoke exhaust terminal 1, smoke exhaust terminal 2, smoke exhaust terminal n, when the smoke exhaust terminal performs a heartbeat package During the broadcast, each smoke exhaust terminal selects the smoke exhaust terminal closest to the control system as the destination of the smoke exhaust terminal according to the stability of the received signal. For example, the smoke exhaust terminal 8 can receive the stable smoke exhaust terminal 4 signal, but the received smoke exhaust terminal 3 signal is unstable, and the smoke exhaust terminal 4 is set as the destination of the smoke exhaust terminal 8; Similarly, the setting control system is the destination of the smoke exhaust terminal 4. The distance between the distance control system is determined by the actual position of the smoke exhaust terminal. For example, if the smoke exhaust terminal is installed on each floor of a building and the control system is installed on the roof, the smoke from the higher floor is exhausted. The terminal is a smoke exhaust terminal near the distance control system.

When the state of the smoke exhaust terminal 8 changes, the status information is reported to the smoke exhaust terminal 4; when the smoke exhaust terminal 4 receives the report status information of the smoke exhaust terminal 8, the smoke exhaust terminal is broadcast to the control system and the smoke exhaust terminal. The status information of the machine 8; the smoke exhaust terminal 8 receives the report status information of the smoke exhaust terminal 4, stops reporting (otherwise, the smoke exhaust terminal 8 continues to report 8 times), and the control system receives the report information of the smoke exhaust terminal 4. , the reply status information is replied; if the smoke exhaust terminal 4 receives the reply information of the control system, the report is stopped (otherwise, the smoke exhaust terminal 4 continues to report 8 times). The above 8 times are empirical values selected according to the actual situation, and retransmission 8 times can achieve reliable reception.

The two-way wireless communication method provided by the embodiment of the present application, when the state of the smoke exhaust terminal changes, the smoke exhaust terminal first sends status information to the destination smoke exhaust terminal, so that the destination smoke exhaust terminal has the state The information is reported to the control system, and each smoke exhaust terminal automatically searches for a stable destination smoke exhaust terminal, reports the information to the destination smoke exhaust terminal when reporting, and can directly exchange information between the control system and the smoke exhaust terminal. In the case, the information interaction between the control system and the smoke exhaust terminal is realized, and the communication success rate between the smoke exhaust terminal and the control system is improved.

The embodiment further provides a computer storage medium configured to store computer software instructions for use in the apparatus provided by the above embodiments.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present application. range.

Industrial applicability

The smoke exhausting device provided by the application provided by the embodiment of the present application can be applied to a central air conditioning system, a central purification system, a ventilation system, or a range hood system. By applying the technical solution of the present application, uniform smoke exhaustion of each floor can be realized, and since each layer of the smoke exhausting terminal machine adopts the same power, only the monitoring component and the adjusting component are separately adjusted, thereby achieving the effects of separately adjusting, so that the device The operation is more stable and can adapt to different working conditions.

Claims

A smoke exhausting device, comprising:

Concentrated flue, running through all floors of the house;

a smoke exhausting host connected to the concentrated flue;

a plurality of exhaust pipe branches respectively located in each floor of the house and one end of each of the exhaust pipe branches is connected to the concentrated flue;

a plurality of smoke exhausting terminals respectively installed at the other end of each of the exhaust pipe branches;

a control system comprising a controller and a plurality of control panels, a plurality of monitoring components and a plurality of adjustment components electrically coupled to the controller;

The control panel is configured to input preset parameters in each exhaust pipe;

a plurality of the monitoring elements are disposed in each of the exhaust pipe branches, configured to collect actual parameters in the exhaust pipe;

a plurality of the adjusting elements are disposed in each of the exhaust pipe branches, and are configured to adjust actual parameters in the exhaust pipe branch;

The controller is configured to perform intelligent analysis on actual parameters and preset parameters to generate a determination result;

Each of the adjusting components and/or the exhausting machine controls an actual parameter in each of the exhaust pipe branches according to the determination result, so that actual parameters in each of the exhaust pipe branches are adapted to preset parameters.
The smoke evacuating device according to claim 1, wherein the control system further comprises: a wireless module, wherein the adjusting component comprises: a fan driving circuit and a purifier driving circuit;

The controller is respectively connected to the wireless module, the fan driving circuit and the purifier driving circuit; the wireless module is communicably connected with each smoke exhaust terminal; and the fan driving circuit is connected to the smoke exhausting host The purifier driving circuit is connected to the purifier;

The controller receives the operation data of each of the smoke exhaust terminals in real time through the wireless module;

The controller triggers the fan drive circuit to control the operation of the smoke exhausting host according to the operation data of each of the smoke exhaust terminal machines, and triggers the purifier drive circuit to control the operation of the purifier.
The smoke exhausting device according to claim 2, wherein the fan drive circuit is connected to a frequency converter of the exhaust main engine;

The controller controls the frequency converter through the fan drive circuit to control an operating frequency of the smoke exhausting host.
The smoke exhausting device according to claim 1, wherein the smoke exhausting terminal comprises: a main control chip and a valve motor driving circuit; and the valve motor driving circuit is connected to the valve motor;

The main control chip comprises a valve motor interface and a gear signal interface;

The valve motor interface is connected to an input end of the valve motor driving circuit;

The main control chip receives the gear position signal through the gear position signal interface, and generates a control signal to send to the valve motor drive circuit to control the valve motor to start.
The smoke exhausting device according to claim 4, further comprising a fan signal receiving circuit;

The input end of the fan signal receiving circuit is connected to the fan control interface of the smoke exhaust terminal, and receives the fan control signal output by the fan control interface;

An output end of the fan signal receiving circuit is connected to the gear position signal;

The fan signal receiving circuit outputs the fan control signal to the gear position signal interface.
An air volume adjusting method, characterized by being applied to the smoke exhausting device according to any one of claims 1 to 5, comprising the steps of:

Parameter setting: Receive preset parameters set by the user in the control panel;

Start-up operation: turn on the smoke exhaust terminal, and the smoke exhausting machine runs at a fixed frequency;

Parameter analysis: receiving the actual parameters in the exhaust pipe collected by the monitoring component, and directly analyzing the actual parameters and preset parameters;

Air volume adjustment: according to the result of the intelligent analysis judgment, the adjusting component is controlled to adjust the air volume in the exhaust pipe, and if the actual parameter is equal or approximately equal to the preset parameter, the control adjusting component ends the adjustment, if the adjusting component is The adjustment cannot reach the preset parameters, and the frequency of the smoke exhausting host is adjusted so that the actual parameters are adapted to the preset parameters.
The air volume adjusting method according to claim 6, wherein the parameter analysis comprises: collecting actual parameters in the exhaust pipe by the monitoring component and transmitting a signal to the controller, and the controller directly performs the intelligent function on the actual parameter and the preset parameter. Analysis and judgment, including:

Obtaining on-off state information of the smoke exhaust terminal installed at the air inlets of the plurality of floors in the concentrated flue and device information of the smoke exhaust terminal;

Determining a target wind pressure and a target air volume for exhausting the flue gas in the concentrated flue according to equipment information of the exhaust terminal device in a power-on state when there is the exhaust terminal device in a power-on state;

Determining, according to the target wind pressure and the target air volume, a target frequency of a smoke exhausting host disposed at the centralized flue port by using a preset wind pressure air volume curve;

Sending a control signal to the frequency converter, so that the frequency converter drives the smoke exhausting machine to operate according to the target frequency, thereby discharging the flue gas discharged by the smoke exhausting terminal machine in the concentrated flue.
The air volume adjustment method according to claim 7, wherein the method further comprises:

Recording test wind pressure and test air volume generated in the concentrated flue when the smoke exhausting machine operates at various test frequencies;

For each of the test frequencies, a wind pressure air volume curve is plotted based on the test wind pressure and the test air volume.
The air volume adjusting method according to claim 8, wherein the determining, according to the target wind pressure and the target air volume, a target wind frequency of a fan disposed at a concentrated flue port using a preset wind pressure air volume curve, including :

Determining a plurality of test wind pressures corresponding to the target air volume in the plurality of wind pressure air volume curves;

Calculating, respectively, a deviation value between each of the plurality of test wind pressures and the target wind pressure;

Determining a wind pressure air volume curve of the test wind pressure at which the minimum deviation value is calculated;

A test frequency corresponding to the wind pressure air volume curve in which the test wind pressure is located is determined as the target frequency.
The air volume adjusting method according to claim 8, wherein the determining, according to the target wind pressure and the target air volume, a target wind frequency of a fan disposed at a concentrated flue port using a preset wind pressure air volume curve, including :

Determining, in a plurality of the wind pressure air volume curves, a plurality of test air volumes corresponding to the target wind pressure;

Calculating, respectively, a deviation value between each of the plurality of test air volumes and the target air volume;

Determining a wind pressure air volume curve in which the test air volume at which the minimum deviation value is calculated is calculated;

A test frequency corresponding to the wind pressure air volume curve in which the test air volume is located is determined as the target frequency.
The air volume adjusting method according to claim 9 or 10, wherein the device information comprises installation information, fan flow information, and fan pressure information;

Determining the target wind pressure and the target air volume for exhausting the flue gas in the concentrated flue according to the device information of the exhaust terminal device in the power-on state, including:

Determining, according to the installation information, a distance between a floor air inlet of each of the smoke exhaust terminals in a power-on state and the smoke exhausting host;

Determining, according to the distance, a wind pressure coefficient and an air volume coefficient of the flue gas discharged from the smoke exhaust terminal of each floor;

Calculating a floor wind pressure and a floor air volume of the smoke exhausting machine of each floor of the smoke exhausting terminal according to the wind pressure coefficient, the air volume coefficient, the fan flow rate information, and the fan pressure information;

The sum of the floor wind pressures of the respective floors is determined as the target wind pressure, and the sum of the floor air volumes of the respective floors is determined as the target air volume.
The air volume adjusting method according to claim 9 or 10, wherein the device information comprises wind pressure measurement information collected by a wind pressure sensor disposed at an air inlet of each floor and air volume measurement information collected by the air volume sensor;

Determining the target wind pressure and the target air volume for exhausting the flue gas in the concentrated flue according to the device information of the exhaust terminal device in the power-on state, including:

Determining, according to the wind pressure measurement information, a floor wind pressure of the smoke exhausting device of the floor where the wind pressure sensor is located, wherein the air volume measurement information determines a floor air volume of the smoke exhausting terminal of the floor where the air volume sensor is located ;

The sum of the floor wind pressures of the respective floors is determined as the target wind pressure, and the sum of the floor air volumes of the respective floors is determined as the target air volume.
A check valve control method, characterized by being applied to the smoke evacuation device according to any one of claims 1 to 5, the method comprising:

Obtaining a rotation angle of the valve piece of the check valve, the valve piece is fixed to a rotating shaft of the valve motor, and the rotating shaft of the valve motor drives the valve piece to rotate when rotating;

Determining, according to the to-be-rotated angle and a preset angular velocity obtained by pre-measuring the valve motor, a number of first pulses for driving the valve motor to rotate the pulse signal to be rotated;

Sending the first pulse number of pulse signals to the valve motor such that the angle of rotation of the valve plate of the valve motor of the valve motor to the check valve is the angle to be rotated.
The method of controlling a check valve according to claim 13, wherein the method further comprises:

Sending a pulse signal to the valve motor, so that the shaft of the valve motor drives the valve piece to rotate from the initial position;

Recording the first receiving moment when receiving the first detection signal sent by the first detecting switch set at the initial position;

Recording a second receiving moment when receiving the second detection signal sent by the second detecting switch set at the preset position;

Obtaining a second pulse quantity of the pulse signal sent between the first receiving time and the second receiving time, and rotating the valve piece from the initial position to the preset position by a preset angle;

Determining a preset angular velocity of the valve motor according to the preset angle and the second number of pulses.
The method of controlling a check valve according to claim 13, wherein the method further comprises:

Sending a pulse signal to the valve motor to cause the rotating shaft to drive the valve piece to rotate from an initial position;

Recording the first receiving moment when receiving the first detection signal sent by the first detecting switch set at the initial position;

Recording a second receiving moment when receiving the second detection signal sent by the second detecting switch set at the preset position;

Obtaining a second pulse quantity of the pulse signal sent between the first receiving time and the second receiving time, and rotating the valve piece from the initial position to the preset position by a preset angle;

Determining a preset angular velocity of the valve motor according to the preset angle and the second number of pulses.
The check valve control method according to claim 15, wherein the angle of the valve to be rotated of the check valve is obtained, including:

Obtaining a smoke exhausting position of the smoke exhausting device;

Determining a reference angle corresponding to the exhausting gear position;

Sending a compensation angle acquisition request through the wireless module;

When the compensation angle is received by the wireless module, the sum of the reference angle and the compensation angle is calculated to obtain the to-be-turned angle.
A two-way wireless communication method, characterized in that it is applied to the smoke evacuation device according to any one of claims 1 to 5, wherein the control system and the plurality of smoke exhaust terminals sequentially transmit a heartbeat in a fixed interval of time intervals Package, the method includes:

The second exhaust terminal receives the control system heartbeat packet sent by the control system and the first exhaust terminal heartbeat packet sent by the first exhaust terminal, and the second exhaust terminal performs the control system information according to the information Information update; the control system heartbeat package includes control system information, and the first exhaust terminal heartbeat package includes first exhaust terminal information;

The second exhaust terminal device broadcasts a second exhaust terminal heartbeat packet to the control system and the other exhaust terminal; the second exhaust terminal heartbeat packet includes the control system information, the The first exhaust terminal information and the second exhaust terminal information.
The method of claim 17, further comprising:

When the state of the second exhaust terminal changes, the second exhaust terminal sends status information to the control system in a time slice of the current fixed time period, so that the control system performs the next time slice. The fixed time period is divided into a plurality of equal time slices.
The two-way wireless communication method according to claim 18, further comprising:

When the states of the plurality of exhaust terminals are simultaneously changed, the state changed smoke exhaust terminal transmits status information to the control system at different time slots of the current fixed time period.
A computer readable medium having a processor-executable non-volatile program code, the program code causing the processor to perform the method of any one of claims 6-19.