Intelligent fresh air purification system and control method thereof

Abstract

The present invention relates to the technical field of fresh air systems, and specifically discloses an intelligent fresh air purification system and a control method thereof, comprising a plurality of boxes, which are arranged side by side, and further comprising: a fresh air unit, which has a plurality of fresh air units, and each box is provided with at least two fresh air units, and the fresh air units in the same box are used for air intake and exhaust respectively; the fresh air unit includes an air duct, and the air duct is respectively connected with fan 1 and fan 2; there are a plurality of electric control panels, and the plurality of electric control panels are respectively arranged on the top of each box, and are electrically connected with fan 1 and fan 2 in the same box. In the present invention, the ventilation of multiple rooms controlled by one group of fans is transformed into the ventilation of each room being collaboratively controlled by two groups of multiple fans, which can be controlled individually, and the ventilation volume is more balanced and adjustable, with low power consumption and low noise.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air systems, and in particular to an intelligent fresh air purification system and a control method thereof. Background Art

[0002] Fresh air system is a ventilation device that can provide fresh air to the room and exhaust dirty air. At present, fresh air system mostly adopts a dual fan structure with one air inlet and one air outlet. A group of fans controls the ventilation of multiple rooms. This method has a simple structure, but has some disadvantages:

[0003] 1. The purification speed is slow. If there is new air pollution in the room, the speed of air purification by the fresh air system is far behind the speed of air pollution;

[0004] 2. The power consumption is large and cannot be controlled individually. For example, if there are five private rooms, the theoretical power consumption of a single room is 400 watts / hour, while the actual power consumption is 2000 watts / hour, because when the main switch of the fresh air system is turned on, all rooms will be ventilated;

[0005] 3. The air volume of the fan will decrease as the distance increases, and the ventilation volume is uneven and cannot be adjusted. Even if the power of the fan is increased, the cross-sectional area of ​​the pipeline and the air outlet determines that the air volume will not change too much. Increasing the fan power also brings problems of increased noise and energy consumption.

[0006] In addition, the current fresh air system is controlled by a fresh air system intelligent controller, such as the fresh air system intelligent controller model KF-900A (hereinafter referred to as 86 box controller). The intelligent fresh air controllers produced by other companies on the market all use similar structures and have some defects:

[0007] 1. After turning off the fan, there will be no air purification in the room; multiple fans in the 86-box controller can only obtain power through the same wiring port and perform the same on / off and high, medium and low speed actions. If the PM2.5 concentration has dropped to a low pollution state, but in order to ensure that there is still air purification in the room and the temperature difference in the room, the ventilation volume should be reduced. At this time, if all fans are still running at the same time, it will only increase energy consumption and the temperature difference in the room; if the fans stop running at the same time, there will be no air purification in the room at all.

[0008] 2. The location of the sensor is too far away from the pollution source, which results in prolonged power on and off time. The 86-box controller adopts an integrated structure design of sensor, electronic control board and display screen. These components are assembled in one firmware, which makes the installation location mostly near the switch next to the door in the room. If the pollution source is on the other side of the room at this time, because the sensor is too far away from the pollution source, the time for the sensor to read the data and send instructions to the fan through the electronic control board is prolonged, affecting the user's experience of the smart fresh air purification speed.

[0009] 3. The setting of PM2.5 value is too low, which leads to the increase of indoor temperature difference and energy consumption. The setting of PM2.5 value is too low, which leads to the increase of indoor temperature difference and energy consumption. The 86-box controller sets the 0-34μg / m 3 Set to low-speed operation range of the fan, 35-69μg / m 3 For the medium speed operation range of the fan, 70μg / m 3 The above is the high-speed operation range of the fan. In fact, this value is seriously low in hot pot restaurants, barbecue restaurants and other application scenarios with a lot of smoke or smokers. The PM2.5 concentration in these places will be much higher than 70μg / m 3 , which means that after the fresh air system is turned on, the fan will run at high speed most of the time (and there will be continuous air pollution in the room); taking the air exchange rate of 30 times / hour as an example, from 999μg / m 3 Down to 550 μg / m 3 The time required is 3-5 minutes, from 550 μg / m 3 Down to 69 μg / m 3 The time for the fan to switch to medium speed is 12 minutes. If the high speed value of the fan is set at 70μg / m 3 It is better than setting it at 550 μg / m 3 Keeping the fan running at high speed for 12 minutes longer (longer if there is continuous pollution) will cause two problems:

[0010] 1. The indoor temperature drops or rises (drops in winter and rises in summer) by 2-5℃ (the greater the temperature difference between indoor and outdoor, the greater the indoor temperature rise and fall). People indoors will feel it very obviously, which greatly reduces the comfort of the fresh air system, causing most users to stop using it;

[0011] 2. The extra 12 minutes of high-speed operation will increase the energy consumption of the fan and air conditioner of the fresh air system. Users will feel that the power consumption is high and will no longer use it. It is also not suitable for the energy-saving and emission reduction measures advocated by the country.

[0012] Therefore, those skilled in the art provide an intelligent fresh air purification system and a control method thereof to solve the problems raised in the above background technology. Summary of the invention

[0013] The purpose of the present invention is to provide an intelligent fresh air purification system and a control method thereof to solve the above-mentioned technical problems.

[0014] The purpose of the present invention can be achieved through the following technical solutions:

[0015] An intelligent fresh air purification system, comprising a plurality of boxes, wherein the plurality of boxes are arranged side by side, and further comprising:

[0016] Fresh air unit, there are multiple fresh air units, at least two fresh air units are arranged inside each of the boxes, and the fresh air units inside the same box are used for air intake and exhaust respectively;

[0017] The fresh air unit comprises an air duct, and the air duct is respectively connected to a fan 1 and a fan 2;

[0018] There are multiple electric control panels, each of which is disposed on the top of each compartment and is electrically connected to the fan 1 and the fan 2 in the same compartment;

[0019] There are multiple displays and sensors, which are respectively arranged on the wall and top center of each box. The sensor is electrically connected to the electric control board in the same box, and the display is connected to the electric control board in the same box via Bluetooth.

[0020] Furthermore, one end of each of the two fans is connected to an air outlet through an end pipe one, and one end of each of the two fans is connected to another set of air outlets through an end pipe two. The two sets of air outlets are used for air intake and air exhaust respectively, and the two sets of air outlets are arranged in a rectangular row on the top of the box;

[0021] Furthermore, the fan 1 and the fan 2 are both connected to a three-way pipe through a connecting pipe, the three-way pipe is connected to the air duct, and the end pipe 1, the end pipe 2 and the connecting pipe are all soft hoses;

[0022] Furthermore, the outer ends of the plurality of air ducts extend out of the box and are fixedly connected with air hoods;

[0023] Further, the electric control board includes a circuit board, the circuit board is provided with a power input terminal, a power output terminal 1, a power output terminal 2 and a power output terminal 3, the power input terminal is used to connect the power supply, the power output terminal 1 is used to power the fan 1, the power output terminal 2 is used to power the fan 2, and distinguishes between high and low speed ports, and the power output terminal 3 is connected to the sensor;

[0024] The present invention also provides a control method for an intelligent fresh air purification system, which is applicable to the intelligent fresh air purification system described above, wherein the fan 1 does not distinguish between high and low speeds, and outputs a constant air volume, and the fan 2 distinguishes between high and low speeds, and outputs corresponding air volumes according to different PM2.5 values. After the system is started, the fan 1 24 is in operation regardless of whether the fan 2 is in operation;

[0025] Furthermore, the operation mode of the fan 2 includes:

[0026] High-speed operation: PM2.5 concentration 551μg / m 3 The above setting is the high-speed operation range of fan 2, with a ventilation rate of 30 times / hour and a PM2.5 concentration of 551μg / m 3 The above setting is the high-speed operation range of the fan 2, and the PM2.5 concentration drops to 550μg / m 3 After that, the fan 2 continues to run at high speed for 15 seconds, if the PM2.5 concentration is still lower than 551μg / m 3 , switch to low speed operation;

[0027] Low speed operation: PM2.5 concentration 301-550μg / m 3 The low speed operation range of the fan 2 is set to 19 times / hour for ventilation, and the PM2.5 concentration is from 550μg / m 3 Down to 300 μg / m 3 After that, the fan 2 continues to run at a low speed for 15 seconds. If the PM2.5 concentration is still lower than 301 μg / m 3 , switch to stop running;

[0028] Closed operation: PM2.5 concentration 0-300μg / m 3 Set as the off-operation interval of the fan 2, this interval is 6-8 times / hour ventilation, at 300μg / m 3 Next, the fan 2 is turned off to ensure that the indoor temperature difference and energy consumption will not continue to increase, while the fan 1 continues to operate to ensure proper indoor air purification.

[0029] Beneficial effects of the present invention:

[0030] 1. Compared with the traditional fresh air system, the ventilation of multiple rooms is controlled by one group of fans instead of two groups of fans in each room. Each fresh air unit is independently set up. Each box has an independent intelligent fresh air control system connected to four fans, which can be controlled individually, thereby effectively reducing power consumption. At the same time, individual control also makes the ventilation volume more balanced and adjustable. In addition, the purification speed of multiple fans working at the same time is fast, and since the fan power does not need to use high-power motors, the noise is also reduced.

[0031] 2. The fan terminal one does not distinguish between high and low speeds and uses a constant air volume output. The fan terminal two distinguishes between high and low speeds and uses corresponding air volume output according to different PM2.5 values. When the indoor air quality drops to a low pollution state, one group of fans can stop to reduce energy consumption, while the other group of fans continues to work, thereby ensuring that the indoor air is still purified and the temperature difference is controlled.

[0032] 3. Components such as sensors, electronic control panels, and displays are separated into independent units. The sensor is installed in the center of the top of the room, so that the sensor is as close to the pollution source as possible, and the power on and off and gear shifting are controlled in the shortest time, so that fan 2 can be turned on in the shortest time to achieve rapid air purification.

[0033] 4. Intelligent control system 0-300μg / m 3 Set to the shutdown range of fan 2, 301-550μg / m 3 Set to the low speed operation range of fan 2, 551μg / m 3 The above setting is the high-speed operating range of fan 2. By reasonably setting the PM2.5 value operating range, the indoor temperature difference can be adjusted and energy consumption can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Figure 1 It is a layout structure diagram of the multi-box fresh air system of the present invention;

[0036] Figure 2 This is a structural diagram of the layout of the fresh air system for a single box of the present invention;

[0037] Figure 3 It is a structural diagram of the electric control board in the present invention;

[0038] Figure 4 It is a principle block diagram of the present invention;

[0039] Figure 5 It is a structural diagram of another embodiment of the present invention.

[0040] Reference numerals:

[0041] 1. Box; 2. Fresh air unit; 21. Air duct; 22. Three-way pipe; 23. Connecting pipe; 24. Fan 1; 25. End pipe 1; 26. Fan 2; 27. End pipe 2; 28. Wind hood; 3. Electric control board; 31. Circuit board; 32. Power input terminal; 33. Power output terminal 1; 34. Power output terminal 2; 35. Power output terminal 3; 4. Sensor; 5. Display. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment 1

[0044] Please refer to the attached Figure 1 to Figure 2 As shown, an intelligent fresh air purification system in an embodiment of the present invention includes a plurality of boxes 1, which are arranged side by side, and further includes:

[0045] Fresh air unit 2, there are multiple fresh air units 2, each box 1 is provided with at least two fresh air units 2, the fresh air units 2 in the same box 1 are used for air intake and exhaust respectively; the fresh air unit 2 includes an air duct 21, the air duct 21 is connected to a fan 1 24 and a fan 2 26 respectively;

[0046] In this embodiment, the area of ​​box 1 is 3m*5m, the height is 2.8m, the power of fan 1 24 is 60w, and the power of fan 2 is 120w. When the air is not polluted, fan 1 24 works at a ventilation rate of 8.1 times / hour, and fan 2 26 does not work. Such ventilation rate can ensure normal ventilation and deodorization in the room, and can also continue to purify the indoor air when the air pollution is low. When PM2.5 reaches a certain value, fan 1 24 and fan 2 26 work at the same time, and the total ventilation rate of the two sets of fans reaches 30 times / hour. Such ventilation rate can keep the decline rate of PM2.5 at 120μg-300μg / minute (the higher the PM2.5 concentration, the faster the decline rate, and the lower the PM2.5 concentration, the slower the decline rate).

[0047] When the PM2.5 concentration in a single compartment 1 is 999μg / m 3 When no new air pollution is generated, the PM2.5 concentration is reduced to 150 μg / m 3 , the traditional fresh air system needs more than half an hour to change the air 8 times / hour, while in this system, fan 1 24 and fan 2 26 work at the same time, the total ventilation volume reaches 30 times / hour, and the time required is 10 minutes. 70%-80% of the air pollutants will be discharged, reducing the pollution level in box 1 to a low state, and the purification speed is more than 3 times that of the traditional fresh air system.

[0048] In addition, the measured noise value when fan 1 24 and fan 2 26 are running at the same time is 38 decibels, which is equivalent to the noise value of a wall-mounted air conditioner and is acceptable to 80% of people. As long as no new air pollution is generated indoors, fan 2 26 will stop running, and the noise value of fan 1 24, which is always running, is only 32 decibels, which can be accepted by most people even in sleep state.

[0049] Moreover, the power of the four fans running at full load is 180 watts / hour, which is less than half of the theoretical energy consumption of 400 watts / hour of the traditional fresh air system, and less than one-tenth of the actual energy consumption of 2000 watts / hour. If all 20 fans in the five boxes are running at full load, the total power consumption is 900 watts / hour. When there is no new air pollution in box 1, only fan 1 will work 24 hours a day, and the energy consumption of a single box 1 will be as low as 60 watts / hour, and the total energy consumption of the five boxes 1 is only 300 watts / hour, which is also lower than the theoretical energy consumption of the traditional fresh air system.

[0050] Embodiment 2

[0051] See also Figures 2 to 3 As shown, on the basis of the first embodiment, this embodiment is provided with an electric control panel 3, which has multiple electric control panels 3, which are respectively arranged on the top of each box 1 and electrically connected to the fan 1 24 and the fan 2 26 in the same box 1; the display 5 and the sensor 4, both of which have multiple, multiple displays 5 and sensors 4 are respectively arranged on the wall and the top center of each box 1, the sensor 4 is electrically connected to the electric control panel 3 in the same box 1, and the display 5 is connected to the electric control panel 3 in the same box 1 via Bluetooth;

[0052] In order to place the sensor 4 as close to the pollution source as possible and control the power on / off and gear shifting in the shortest time, the sensor 4 is installed in the center of the top of the room, which is the closest to the pollution source. The path of the oil smoke is first from bottom to top, then spreads to the surroundings along the top of the room, and finally settles down along the surrounding walls. The sensor 4 is usually 3 meters away from the pollution source at the top of the room. It only takes 10-20 seconds to sense and immediately send the data to the electronic control board 3 and the display 5. At the same time, the electronic control board 3 sends the instruction to the fan 26, so the fan 26 can be turned on in the shortest time to achieve rapid air purification.

[0053] The sensor 4 may be a multifunctional air quality sensor, which may be connected to the electric control board 3 via a weak electric line, or may be connected wirelessly via Bluetooth.

[0054] During installation, the electric control board 3 and the sensor 4 are packed in a shell and fixed in the inspection opening of the hidden fan or any hidden place inside or outside the room (if there is no inspection opening);

[0055] The display 5 is connected to the electric control panel 3 via Bluetooth and is installed near the switch beside the gate or other places that are convenient for users to operate.

[0056] Please refer again Figure 2 and Figure 3 As shown, the electric control board 3 includes a circuit board 31, and the circuit board 31 is provided with a power input terminal 32, a power output terminal 1 33, a power output terminal 2 34 and a power output terminal 35. The power input terminal 32 is used to connect the power supply, the power output terminal 1 33 is used to supply power to the fan 1 24, the power output terminal 2 34 is used to supply power to the fan 2 26, and distinguishes between high and low speed ports, and the power output terminal 35 is connected to the sensor 4;

[0057] Each box 1 has an independent electrical control panel 3 connected to 4 fans. When working, you only need to turn on the fresh air system of the box 1 that needs to be used, and other unused boxes 1 can be left open, thereby reducing energy consumption; in addition, the electrical control panel 3 divides the power output terminal into multiple groups, and the fan 1 terminal 24 does not distinguish between high and low speeds, and outputs a constant air volume; the fan 2 terminal 26 distinguishes between high and low speeds, and can use corresponding air volume output according to different PM2.5 values.

[0058] Specifically, after the four fans have been running for a period of time, the indoor air quality has dropped to a low pollution state. In order to ensure that the indoor air is still purified and the temperature difference is controlled, the ventilation volume demand should be adjusted from 30 times / hour to 6-8 times / hour. At this time, there is no need to shut down the intelligent control system. The electrical control board 3 will send a command to the fan 26 to stop running, and the fan 1 24 will continue to run to ensure that the indoor air is still purified. The actual measurement of the ventilation volume of 6-8 times / hour running for 1 hour has an impact on the temperature within ±0.5℃.

[0059] Embodiment 3

[0060] See also Figures 1 to 2 As shown, on the basis of Example 1 and Example 2, one end of the two fans 24 is connected to an air outlet through an end pipe 1 25, and one end of the two fans 26 is connected to another group of air outlets through an end pipe 27. The two groups of air outlets are used for air intake and exhaust, respectively. The two groups of air outlets are arranged in a rectangular row on the top of the box 1. Fan 1 24 and fan 2 26 are connected to a three-way pipe 22 through a connecting pipe 23, and the three-way pipe 22 is connected to the air duct 21. The end pipe 1 25, the end pipe 27 and the connecting pipe 23 are all hoses, and the use of hoses facilitates the adjustment of the ventilation volume.

[0061] It should be noted that the cross-sectional area of ​​the converging portion of the three-way pipe 22 is larger than the sum of the cross-sectional areas of the two connecting pipes 23 connecting the fan 1 24 and the fan 2 26, so as to ensure that there is no excessive loss of air volume;

[0062] Also, see Figure 5As shown, as another implementation of this embodiment, when other holes are allowed to be opened in the box 1, fan 1 24 and fan 2 26 are each connected to an air duct 21 through a connecting pipe 23. This method can avoid the air volume loss caused by using a three-way pipe 22.

[0063] In the actual installation process, due to the different uses of the boxes 1, the ventilation volume requirements of each box 1 are also different. For example, some boxes 1 are used as guest rooms or bedrooms, and require relatively low noise. This can be achieved by lengthening the hose part and making the distance between the air outlet and the fan farther to reduce the ventilation volume. Some boxes 1 are used in hot pot restaurants, barbecue restaurants, mahjong rooms and other places with a large number of people and prone to generating fumes. They have a higher ventilation volume requirement, and the hose part can be shortened to make the distance between the air outlet and the fan closer to increase the ventilation volume.

[0064] Among them, the total ventilation volume is guaranteed to be between 25-35 times / hour, which can achieve a PM2.5 value reduction of 120-300μg / m per minute. 3 , to meet the actual ventilation needs.

[0065] As an implementation method of this embodiment, the outer ends of multiple air ducts 21 extend out of the box 1 and are fixedly connected to the hood 28, and each box 1 can have an independent air inlet and outlet.

[0066] Embodiment 4

[0067] See also Figures 1 to 4 As shown, the present invention also provides a control method for an intelligent fresh air purification system, which is applicable to the intelligent fresh air purification system. The fan 1 24 does not distinguish between high and low speeds, and outputs a constant air volume. The fan 2 26 distinguishes between high and low speeds, and uses corresponding air volume output according to different PM2.5 values. After the system is started, the fan 1 24 is running regardless of whether the fan 2 26 is running.

[0068] The operation modes of fan 26 include:

[0069] High-speed operation: PM2.5 concentration 551μg / m 3 The above setting is the high-speed operation range of fan 26, which has a ventilation volume of 30 times / hour and a PM2.5 concentration of 551μg / m 3 The above setting is the high-speed operation range of fan 26, and the PM2.5 concentration drops to 550μg / m 3 After that, fan 26 continues to run at high speed for 15 seconds. If the PM2.5 concentration is still below 551μg / m 3 , switch to low speed operation;

[0070] Among them, 15 seconds is a buffer period to prevent the PM2.5 value from fluctuating back and forth between 551 and 550, triggering the fan to repeatedly switch gears. The actual measurement shows that the indoor temperature change will not exceed ±0.8℃ after running at a ventilation volume of 30 times / hour for 5 minutes. Considering that if new air pollution is generated at this time, the PM2.5 concentration will continue to rise, and the indoor temperature difference will be enlarged if the fan 26 is still running at high speed, so the fan 26 is stopped for 1 minute after running at high speed for 5 minutes, and the fan 1 24 is kept running at a ventilation volume of 6-8 times / hour (the 1 minute when the fan 26 is stopped can make the indoor temperature slightly close to the initial value). After 1 minute, if the PM2.5 value is in the high-speed range, the fan 26 is run at high speed, and if it is in the low-speed range, the fan 26 is run at low speed;

[0071] Low speed operation: PM2.5 concentration 301-550μg / m 3 Set the fan 26 to low speed operation range, this range is 19 times / hour ventilation, PM2.5 concentration from 550μg / m 3 Down to 300 μg / m 3 After that, fan 26 continues to run at low speed for 15 seconds. If the PM2.5 concentration is still below 301μg / m 3 , switch to stop running;

[0072] Among them, 15 seconds is a buffer period to prevent the PM2.5 value from fluctuating between 301 and 300, triggering the fan to switch gears repeatedly. The measured indoor temperature change after running at 19 times / hour for 4 minutes will not exceed ±0.5℃. Considering that if new air pollution is generated at this time, the PM2.5 concentration will continue to rise; for example, at 42m 3 If two cigarettes are burned in a room for one minute, the PM2.5 concentration can exceed 999μg / m 3 , and it comes to the high-speed operation range again. Switching fan 26 to low speed or even high speed operation will expand the temperature difference in the room, so let fan 26 stop running for 1 minute after running at low speed for 4 minutes, and keep fan 1 24 to continue running at a ventilation volume of 6-8 times / hour (the 1 minute when fan 26 stops running can make the indoor temperature slightly close to the initial value). After 1 minute, if the PM2.5 value is in the high-speed range, let fan 26 run at high speed; if it is in the low-speed range, let fan 26 run at low speed; if it is in the closed range, let fan 26 stop running.

[0073] In addition, the low-speed operation range is 301μg / m 3 -550 μg / m 3The numerical interval 249 from low to high is not a fixed value, and this value can also be 150-350; if it is lower than 150, the low-speed operation time is too short and the indoor temperature difference will increase; if it is higher than 350, the low-speed operation time is too long and the indoor air purification speed will slow down. It can be set according to actual needs.

[0074] Closed operation: PM2.5 concentration 0-300μg / m 3 The fan 26 is set to the off-operation range. After actual measurement, the PM2.5 concentration is 300μg / m 3 The air quality is the critical value for people to breathe comfortably, and the increase of 50μg / m 3 The effect on the comfort of human breathing is acceptable, and the ventilation volume in this range is 6-8 times / hour. 3 Next, the fan 26 is turned off to ensure that the temperature difference and energy consumption in the room will not continue to increase, while the fan 1 24 continues to operate to ensure proper air purification in the room;

[0075] It should be noted that the shutdown operation range is 0-300μg / m 3 It does not mean that the fan can only be turned off and the temperature can only be 300μg / m 3 , but 300μg / m 3 Above 350 μg / m 3 Any value below 26 can be used as the interval for shutting down fan 2.

[0076] For example, in winter, especially in the north, the temperature difference between indoor and outdoor is very large, so the fan 26 should be stopped early, and the shutdown range can be 0-350μg / m 3 Before installation, the ventilation volume of fan 1 24 should be adjusted to 3-4 times / hour (should be lower than the standard ventilation volume of 6-8 times / hour), so that the indoor temperature difference can be guaranteed; if it is a hot pot restaurant or other area where oil smoke is always generated, fan 26 can be operated for a longer period of time, and the closing interval can be 0-150μg / m 3 ; All these numerical changes can be completed through display 5 without re-modifying the program.

[0077] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An intelligent fresh air purification system, comprising a plurality of boxes (1), wherein the plurality of boxes (1) are arranged side by side, and characterized in that: Also includes: Fresh air units (2), the fresh air units (2) being provided in plurality, and at least two fresh air units (2) being provided inside each of the boxes (1), and the fresh air units (2) inside the same box (1) are used for air intake and air exhaust respectively; The fresh air unit (2) comprises an air duct (21), and the air duct (21) is respectively connected to a fan 1 (24) and a fan 2 (26); There are multiple electric control panels (3), each of which is disposed on the top of each compartment (1) and is electrically connected to a fan 1 (24) and a fan 2 (26) in the same compartment (1); The display (5) and the sensor (4) are both provided in plurality, and the plurality of the display (5) and the sensor (4) are respectively arranged on the wall and the top center of each box (1), the sensor (4) is electrically connected to the electric control board (3) in the same box (1), and the display (5) is connected to the electric control board (3) in the same box (1) via Bluetooth; Fan 1 (24) does not distinguish between high and low speeds and uses a constant air volume output. Fan 2 (26) distinguishes between high and low speeds and uses corresponding air volume output according to different PM2.5 values. After the system is started, fan 1 (24) will run regardless of whether fan 2 (26) is running.

2. The intelligent fresh air purification system according to claim 1, characterized in that: One end of each of the two fans (24) is connected to an air outlet via an end pipe (25), and one end of each of the two fans (26) is connected to another set of air outlets via an end pipe (27). The two sets of air outlets are used for air intake and air exhaust respectively. The two sets of end pipes (25) and end pipes (27) are arranged in a rectangular shape on the top of the box (1).

3. The intelligent fresh air purification system according to claim 2, characterized in that: The fan 1 (24) and the fan 2 (26) are both connected to a three-way pipe (22) via a connecting pipe (23), the three-way pipe (22) is connected to the air duct (21), and the end pipe 1 (25), the end pipe 2 (27) and the connecting pipe (23) are all soft hoses.

4. The intelligent fresh air purification system according to claim 1, characterized in that: The outer ends of the plurality of air ducts (21) extend out of the box (1) and are fixedly connected to air hoods (28).

5. The intelligent fresh air purification system according to claim 1, characterized in that: The electric control board (3) comprises a circuit board (31), the circuit board (31) being provided with a power input terminal (32), a first power output terminal (33), a second power output terminal (34) and a third power output terminal (35), the power input terminal (32) being used to connect to a power source, the first power output terminal (33) being used to supply power to a first fan (24), the second power output terminal (34) being used to supply power to a second fan (26), and distinguishing between high-speed and low-speed ports, and the third power output terminal (35) being connected to a sensor (4).

6. The control method of the intelligent fresh air purification system according to claim 1 is characterized by: The operation mode of the second fan (26) includes: High-speed operation: PM2.5 concentration 551μg / m 3 The above setting is the high-speed operation range of fan 2 (26), with a ventilation rate of 30 times / hour and a PM2.5 concentration of 551μg / m 3 The above setting is the high-speed operation range of the fan 2 (26), and the PM2.5 concentration drops to 550μg / m 3 After that, the fan 2 (26) continues to run at high speed for 15 seconds. If the PM2.5 concentration is still lower than 551 μg / m 3 , switch to low speed operation; Low speed operation: PM2.5 concentration 301-550μg / m 3 The low speed operation range of the fan 2 (26) is set to 19 times / hour for ventilation, and the PM2.5 concentration is from 550μg / m 3 Down to 300 μg / m 3 After that, the fan 2 (26) continues to run at a low speed for 15 seconds. If the PM2.5 concentration is still below 301 μg / m 3 , switch to stop running; Closed operation: PM2.5 concentration 0-300μg / m 3 The fan 2 (26) is set to be in the off-operation interval, which is 6-8 times / hour for ventilation, at 300 μg / m 3 Next, the fan 2 (26) is turned off to ensure that the temperature difference and energy consumption in the room will not continue to increase, while the fan 1 (24) continues to operate to ensure proper air purification in the room.

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