Air purifying device for building decoration

Abstract

This invention discloses an air purification device for building decoration and renovation, belonging to the field of air purification technology. The device includes a multi-source environmental sensing module, a central intelligent control module, a composite purification execution module, an exhaust coordination module, and a human-machine interaction and remote monitoring module. The multi-source environmental sensing module collects pollutant concentrations through a laser scattering particulate matter sensor, an electrochemical formaldehyde sensor, and a metal oxide TVOC sensor, and transmits the pre-processed data to the central intelligent control module. The central intelligent control module generates instructions based on an adaptive collaborative control algorithm to control the four-stage purification process of the composite purification execution module and the operation of the exhaust coordination module. The composite purification execution module adopts a series structure of primary filtration, high-efficiency air filtration, photocatalytic decomposition, and modified activated carbon adsorption. Each module is connected via a controller local area network bus or wireless fidelity communication, automatically switching purification modes according to the decoration stage to achieve coordinated purification and exhaust.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to an air purification device for building decoration and renovation. Background Technology

[0002] During the building decoration and renovation process, the concentrations of gaseous pollutants such as formaldehyde, benzene compounds, and total volatile organic compounds, as well as particulate matter, increase significantly. These pollutants have long release periods, posing a threat to the health of construction workers and affecting the safety of subsequent residents.

[0003] Existing air purification equipment has the following problems: it has a single purification mode and cannot be adjusted according to different stages of decoration; it relies on a single sensor for detection, which is prone to misjudgment; the monitoring, purification, and exhaust modules operate independently and lack coordination; there is a risk of desorption after activated carbon adsorption becomes saturated, and high-voltage ionization technology may produce ozone; and it cannot dynamically adjust the power according to the size of the space and the concentration of pollution. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] The technical problems to be solved by the present invention are that the existing technologies have a single purification mode, insufficient detection accuracy, poor module coordination, risk of secondary pollution, and insufficient adaptability.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: an air purification device for building decoration and renovation.

[0008] The multi-source environmental sensing module is used to collect indoor air pollutant concentrations and environmental parameters, including a particulate matter sensor, a volatile pollutant sensor, a temperature and humidity sensor, a data preprocessing unit, and a communication interface. The data preprocessing unit is used to filter, calibrate, and convert the format of the collected raw data.

[0009] The central intelligent control module is used to receive data from the multi-source environmental perception module, analyze and process it, and generate control commands. It includes a main controller, a data storage unit, a control algorithm unit and a communication interface. The control algorithm unit has built-in adaptive cooperative control algorithm and multi-source data fusion algorithm.

[0010] The composite purification execution module is used to receive instructions from the central intelligent control module and execute air purification operations, including a pretreatment module, a high-efficiency filtration module, a photocatalytic purification module, a modified activated carbon adsorption module, and a fan unit.

[0011] The exhaust coordination module is used to exhaust the purified air outdoors, including an exhaust fan, a fresh air inlet, an exhaust duct, and an outdoor pollutant detection sensor.

[0012] The human-computer interaction and remote monitoring module is used to realize the interaction between users and the system and remote monitoring, including a local interaction unit, an audible and visual alarm unit and a remote monitoring unit;

[0013] The multi-source environmental sensing module, the composite purification execution module, and the exhaust coordination module establish bidirectional communication connections with the central intelligent control module through the controller local area network bus, and the human-machine interaction and remote monitoring module connects to the central intelligent control module through wireless high-fidelity communication.

[0014] As an improvement, the particulate matter sensor in the multi-source environmental sensing module adopts a laser scattering sensor to detect PM2.5 and PM10 concentrations; the volatile pollutant sensor includes an electrochemical formaldehyde sensor and a metal oxide total volatile organic compound sensor; the data preprocessing unit uses a moving average filtering algorithm to process particulate matter and formaldehyde data.

[0015] As an improvement, the main controller of the central intelligent control module adopts a microcontroller, and the control algorithm unit divides data acquisition, control logic, communication and early warning tasks based on a real-time operating system, and realizes data interaction through a message queue; the adaptive collaborative control algorithm dynamically generates control commands for adjusting the power of the purification module, adjusting the exhaust speed and switching modes according to the pollutant concentration, the stage of decoration and the size of the space.

[0016] As an improvement, the pretreatment module in the composite purification execution module uses a primary filter to filter large particulate dust with a particle size of 5 micrometers or greater; the high-efficiency filtration module uses an H13 high-efficiency air filter to filter fine particulate matter with a particle size of 0.3 micrometers; the photocatalytic purification module uses titanium dioxide nano-photocatalyst and ultraviolet lamp to decompose volatile pollutants through photocatalytic reaction; and the modified activated carbon adsorption module uses modified activated carbon loaded with nano-silver and manganese dioxide, which has a high-temperature regeneration function.

[0017] As an improvement, the fan unit of the composite purification execution module adopts a DC brushless fan, and the speed is adjusted by a pulse width modulation drive circuit. The speed is divided into three levels: low speed, medium speed and high speed, which correspond to duty cycles of 30%, 60% and 90% respectively.

[0018] As an improvement, the fresh air intake of the exhaust ventilation module is equipped with adjustable louvers, which automatically adjust the opening degree according to the indoor and outdoor pollutant concentrations; the outdoor pollutant detection sensor includes a particulate matter sensor and a total volatile organic compound sensor, used to detect the outdoor pollutant concentration.

[0019] As an improvement, the local interaction unit of the human-computer interaction and remote monitoring module includes a thin-film transistor touch screen and physical buttons, and the remote monitoring unit communicates with the central intelligent control module using a message queue telemetry transmission protocol to realize remote data viewing and remote operation.

[0020] As an improvement, the central intelligent control module presets pollutant models for each stage of the renovation and automatically identifies the renovation stage based on the pollutant concentration ratio collected by the multi-source environmental sensing module. The renovation stages include the carpentry stage, the painting stage, and the finishing stage, and switches the purification mode accordingly.

[0021] As an improvement, the composite purification execution module and the exhaust coordination module operate synchronously. The exhaust coordination module starts synchronously when the composite purification execution module starts and stops after a delay after the composite purification execution module stops operating.

[0022] As an improvement, the control logic priority of the central intelligent control module is as follows: emergency purification mode, automatic adaptive mode, manual mode and energy-saving mode; when the saturation of the modified activated carbon in the composite purification execution module reaches a preset threshold, the high-temperature regeneration mode is started under the control of the central intelligent control module.

[0023] (III) Beneficial Effects

[0024] The advantages of this invention compared to existing technologies are as follows: by using multi-source sensors in synergy and combining them with data fusion algorithms, the possibility of misjudgment by a single sensor is reduced, and the reliability of pollutant concentration detection is improved; a four-stage composite purification process is adopted, and the photocatalytic module can avoid ozone generation when operating under specific power conditions; the modified activated carbon can be reused through high-temperature regeneration, reducing the risk of desorption after adsorption saturation; the central intelligent control module coordinates the operation of each module and dynamically adjusts the purification parameters according to the decoration stage and pollutant concentration, so that purification and exhaust are synchronized, reducing energy waste. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall architecture of an air purification device system for building decoration and renovation according to the present invention. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, this invention adopts a four-layer modular architecture of "perception-control-execution-interaction". The multi-source environmental perception module, acting as a sensing terminal, collects environmental data and transmits it to the central intelligent control module via the controller's local area network bus. The central intelligent control module, as the core processing unit, runs control algorithms to generate instructions, which are then distributed to the composite purification execution module and the exhaust coordination module. The human-machine interaction and remote monitoring module achieves remote data interaction through wireless high-fidelity communication.

[0028] The particulate matter sensor employs a laser scattering sensor, with a measurement range of 0-999 micrograms per cubic meter and a resolution of 1 microgram per cubic meter, used to detect PM2.5 and PM10 concentrations. Volatile pollutant sensors include an electrochemical formaldehyde sensor and a metal oxide-based total volatile organic compound (TVOC) sensor. The temperature and humidity sensors utilize high-precision sensors, with a temperature measurement range of -20°C to 70°C and a humidity measurement range of 0% to 100%. The data preprocessing unit employs a microcontroller, using a moving average filtering algorithm to process particulate matter and formaldehyde data, transmitting the processed data to the central intelligent control module every 5 seconds.

[0029] The main controller uses a microcontroller with a clock frequency of 168 MHz. The control algorithm unit is based on a real-time operating system and is divided into four tasks: data acquisition, control logic, communication, and early warning. Data interaction is achieved through a message queue. The data storage unit uses a 16GB flash memory to store historical data and preset parameters. The adaptive collaborative control algorithm calculates the power required by the purification module and the exhaust speed based on the real-time pollutant concentration, the identified stage of renovation, and the size of the space, and generates corresponding control commands.

[0030] The pretreatment module features a 5-micron pore size primary filter with a filtration efficiency of at least 80%, and is removable and washable. The high-efficiency air filter module uses an H13 grade filter with a 0.3-micron pore size and a filtration efficiency of at least 99.97%, and includes a built-in saturation sensor. The photocatalytic purification module uses a 254-nanometer wavelength ultraviolet lamp with power controlled below 10 watts. The modified activated carbon has a specific surface area of ​​at least 1500 square meters per gram, and its adsorption capacity is 2 to 3 times that of ordinary activated carbon. The fan unit uses a DC brushless fan with adjustable power from 100 to 300 watts. The speed is adjusted via a pulse width modulation drive circuit, offering three speed settings: low, medium, and high, corresponding to duty cycles of 30%, 60%, and 90% respectively, with an airflow range of 100 to 300 cubic meters per hour.

[0031] When the saturation of modified activated carbon reaches 80%, the central intelligent control module starts the high-temperature regeneration mode, with the temperature controlled at 120 degrees Celsius for 30 minutes.

[0032] The exhaust fan uses a DC brushless fan with an adjustable power of 50 to 150 watts and an airflow range of 50 to 150 cubic meters per hour. The adjustable louvers at the fresh air inlet automatically adjust their opening based on indoor and outdoor pollutant concentrations: they close when outdoor PM2.5 concentrations exceed the standard to prevent outdoor pollutants from entering. The exhaust duct is made of PVC, with a diameter of 100 mm, and the joints are sealed with sealing strips, ensuring an air leakage rate of no more than 3%.

[0033] The local interaction unit includes a 3.5-inch thin-film transistor touchscreen and physical buttons. The touchscreen displays real-time pollutant concentration, temperature and humidity, system operating status, consumable status, and warning information, and supports touch-setting of thresholds for various pollutants. The audible and visual alarm unit is equipped with a red LED alarm light and a buzzer, triggering an alarm when pollutant concentration exceeds the limit, system malfunction occurs, or consumables need to be replaced. The remote monitoring unit communicates with the central intelligent control module using a message queue telemetry transmission protocol, supporting remote data viewing, mode switching, and parameter adjustment via mobile application and computer monitoring platform.

[0034] The system workflow is divided into five stages:

[0035] Startup Phase: Users start the system via local buttons, touchscreen, or remote application, and each module performs self-checks. If a module is running normally, it enters the monitoring phase; if a fault occurs, an alarm is triggered and pushed to the remote platform.

[0036] Monitoring phase: The multi-source environmental sensing module collects indoor and outdoor pollutant concentrations, temperature and humidity parameters, and transmits them to the central intelligent control module every 5 seconds after preprocessing.

[0037] Analysis phase: The central intelligent control module comprehensively analyzes data through multi-source data fusion algorithms, identifies the renovation stage, predicts the trend of pollutant concentration changes, and determines the required purification mode and power.

[0038] Purification Phase: The central intelligent control module sends control commands to the composite purification execution module and the exhaust coordination module to activate the corresponding purification mode and exhaust speed. During the purification process, parameters are dynamically adjusted based on feedback data.

[0039] Feedback Phase: The central intelligent control module transmits real-time data and status to the human-machine interaction and remote monitoring module for display and uploading. When pollutant concentration meets the standard, it switches to energy-saving mode; when the concentration exceeds the standard again, the purification mode restarts; an alarm is triggered when consumables are saturated or a module malfunctions.

[0040] The control logic priority of the central intelligent control module is as follows: emergency purification mode (forced to start when pollutant concentration seriously exceeds the standard) takes precedence over automatic adaptive mode (automatic adjustment according to the decoration stage and pollutant concentration), automatic adaptive mode takes precedence over manual mode (user manual operation), and manual mode takes precedence over energy-saving mode (low-power operation when pollutant concentration meets the standard).

[0041] The central intelligent control module pre-sets pollutant characteristic models for each stage of the renovation process:

[0042] During the woodworking stage: PM2.5 concentration is significantly higher than other pollutants, the system automatically switches to particulate matter purification mode, the high-efficiency filtration module operates at full capacity, and the exhaust module operates at medium speed.

[0043] During the painting stage: the concentrations of formaldehyde and total volatile organic compounds increase significantly. The system switches to the volatile organic compound purification mode, and the photocatalytic purification module and modified activated carbon adsorption module operate at full load, while the exhaust module operates at high speed.

[0044] Final stage: With all pollutant concentrations at low levels, the system switches to comprehensive purification mode, with each purification module operating at low power and the exhaust module operating at low speed.

[0045] The phase identification is based on the proportion of pollutant concentrations collected by the multi-source environmental sensing module, and is automatically determined by the multi-source data fusion algorithm without the need for manual settings.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An air purification device for building decoration and renovation, characterized in that: The multi-source environmental sensing module is used to collect indoor air pollutant concentrations and environmental parameters, including a particulate matter sensor, a volatile pollutant sensor, a temperature and humidity sensor, a data preprocessing unit, and a communication interface. The data preprocessing unit is used to filter, calibrate, and convert the format of the collected raw data. The central intelligent control module is used to receive data from the multi-source environmental perception module, analyze and process it, and generate control commands. It includes a main controller, a data storage unit, a control algorithm unit and a communication interface. The control algorithm unit has built-in adaptive cooperative control algorithm and multi-source data fusion algorithm. The composite purification execution module is used to receive instructions from the central intelligent control module and execute air purification operations, including a pretreatment module, a high-efficiency filtration module, a photocatalytic purification module, a modified activated carbon adsorption module, and a fan unit. The exhaust coordination module is used to exhaust the purified air outdoors, including an exhaust fan, a fresh air inlet, an exhaust duct, and an outdoor pollutant detection sensor. The human-computer interaction and remote monitoring module is used to realize the interaction between users and the system and remote monitoring, including a local interaction unit, an audible and visual alarm unit and a remote monitoring unit; The multi-source environmental sensing module, the composite purification execution module, and the exhaust coordination module establish bidirectional communication connections with the central intelligent control module through the controller local area network bus, and the human-machine interaction and remote monitoring module connects to the central intelligent control module through wireless high-fidelity communication.

2. The air purification device for building decoration and renovation according to claim 1, characterized in that: The particulate matter sensor in the multi-source environmental sensing module is a laser scattering sensor used to detect PM2.5 and PM10 concentrations; the volatile pollutant sensors include an electrochemical formaldehyde sensor and a metal oxide total volatile organic compound sensor; the data preprocessing unit uses a moving average filtering algorithm to process particulate matter and formaldehyde data.

3. The air purification device for building decoration and renovation according to claim 1, characterized in that: The main controller of the central intelligent control module adopts a microcontroller. The control algorithm unit is based on a real-time operating system and divides data acquisition, control logic, communication and early warning tasks, and realizes data interaction through message queues. The adaptive collaborative control algorithm dynamically generates control commands for adjusting the power of the purification module, adjusting the exhaust speed and switching modes according to the pollutant concentration, the stage of decoration and the size of the space.

4. The air purification device for building decoration and renovation according to claim 1, characterized in that: The pretreatment module in the composite purification execution module uses a primary filter to filter large dust particles with a diameter of 5 micrometers or greater; the high-efficiency filtration module uses an H13 high-efficiency air filter to filter fine particulate matter with a diameter of 0.3 micrometers; the photocatalytic purification module uses titanium dioxide nano-photocatalysts and ultraviolet lamps to decompose volatile pollutants through photocatalytic reactions. The modified activated carbon adsorption module uses modified activated carbon loaded with nano-silver and manganese dioxide, and the modified activated carbon has a high-temperature regeneration function.

5. An air purification device for building decoration and renovation according to claim 1, characterized in that: The fan unit of the composite purification execution module adopts a DC brushless fan, and the speed is adjusted by a pulse width modulation drive circuit. The speed is divided into three levels: low speed, medium speed and high speed, which correspond to duty cycles of 30%, 60% and 90% respectively.

6. An air purification device for building decoration and renovation according to claim 1, characterized in that: The fresh air intake of the exhaust ventilation module is equipped with adjustable louvers, which automatically adjust their opening degree according to the indoor and outdoor pollutant concentrations; the outdoor pollutant detection sensor includes a particulate matter sensor and a total volatile organic compound sensor, used to detect the outdoor pollutant concentration.

7. An air purification device for building decoration and renovation according to claim 1, characterized in that: The local interaction unit of the human-computer interaction and remote monitoring module includes a thin-film transistor touch screen and physical buttons. The remote monitoring unit communicates with the central intelligent control module using a message queue telemetry transmission protocol to realize remote data viewing and remote operation.

8. An air purification device for building decoration and renovation according to claim 1, characterized in that: The central intelligent control module presets pollutant models for each stage of the renovation and automatically identifies the renovation stage based on the pollutant concentration ratio collected by the multi-source environmental sensing module. The renovation stages include the carpentry stage, the painting stage, and the finishing stage, and switches the purification mode accordingly.

9. An air purification device for building decoration and renovation according to claim 1, characterized in that: The composite purification execution module and the exhaust coordination module operate synchronously. The exhaust coordination module starts synchronously when the composite purification execution module starts and stops after a delay after the composite purification execution module stops operating.

10. An air purification device for building decoration and renovation according to claim 1, characterized in that: The control logic priority of the central intelligent control module is as follows: emergency purification mode, automatic adaptive mode, manual mode and energy saving mode; when the saturation of the modified activated carbon in the composite purification execution module reaches the preset threshold, the high-temperature regeneration mode is started under the control of the central intelligent control module.

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