An anti-infiltration wind intelligent regulation and control device and a control method thereof

Abstract

The application discloses a kind of anti-infiltration wind intelligent regulation and control device and regulation and control method thereof, by setting temperature detection system (outdoor, door bucket, indoor temperature sensor) and air taking / sending mechanism (variable speed fan+outdoor / indoor electric air valve+louver air port) in building door bucket, t1, t2, t3 are compared in real time by central processing unit, and the direction of infiltration wind is judged;Subsequently, the fan is started to take air from indoor or outdoor, forms air curtain in door bucket, cuts off natural infiltration wind, and dynamically fine tunes air volume by continuously comparing ΔT (temperature difference between door bucket temperature and non-air sending side) and set threshold A (0.1-0.5 ℃), realizes "zero infiltration" and does not excessively consume energy.The device is symmetrical, compact structure, can significantly improve the energy saving and comfort of door bucket.The application also provides corresponding computer readable storage medium to support the software implementation of the above method.

Description

Technical Field

[0001] This invention relates to the field of building anti-seepage technology, specifically to an anti-seepage air intelligent control device and its control method applicable to building exterior door vestibule scenarios. Technical Background

[0002] In large public buildings, the presence of indoor and outdoor thermal pressure and wind pressure will generate a large amount of unorganized infiltration wind. Especially during the air-conditioning season (winter and summer), the use of air conditioning further increases the indoor and outdoor thermal pressure, exacerbates the formation of infiltration wind, and has an adverse effect on the indoor thermal environment and building energy consumption.

[0003] Currently, the conventional practice to reduce infiltration wind entering the building is to install air curtain machines at the exterior entrance. These machines are installed directly above the exterior door and work by drawing in indoor (or outdoor) air and blowing it downwards, creating sheet-like airflow to block infiltration. However, infiltration wind is constantly changing due to factors such as building shape, geographical location, outdoor wind speed, and temperature. Traditional air curtain machines, with their fixed airflow, cannot effectively block infiltration and cannot adjust the air volume and direction in real time according to changes in outdoor infiltration wind. Existing research shows that the highest blocking efficiency of air curtains is only 27.65% in winter and 25.13% in summer. Especially when there is high traffic at the exterior door, people moving back and forth disrupt the sheet-like airflow of the air curtain, making it ineffective in blocking infiltration wind.

[0004] Because outdoor infiltration air enters the building, it increases the exchange of heat between indoors and outdoors, significantly increasing air conditioning energy consumption and building energy consumption. Summary of the Invention

[0005] The technical concept of this invention is to install an intelligent anti-seepage wind control device at the exterior entrance of a building. By collecting the temperature of the entrance and the indoor and outdoor temperatures through temperature sensors, the direction of the seepage wind is determined, and the air intake position and air volume of the fan are further controlled. Furthermore, through the evenly distributed air outlets, uniform airflow and pressure are achieved, reducing the feeling of blowing wind and noise, and the air volume is adjusted in real time to effectively block the seepage wind from entering the interior of the building.

[0006] The present invention first proposes an anti-seepage air intelligent control device, which is installed in the vestibule of the building located on the exterior wall. The vestibule includes an outer door (10) facing the outside and an inner door (9) facing the inside, and includes a temperature detection system, an air intake / supply mechanism located in the vestibule and a central processing unit (11).

[0007] The temperature detection system includes an outdoor temperature sensor (1) installed outside and inside the building, an indoor temperature sensor (7) installed inside the building, and a temperature sensor (6) installed inside the vestibule.

[0008] The air intake / supply mechanism includes a variable speed fan (4) and three air outlets connected to the variable speed fan (4). The first air outlet is set on the wall (8) of the foyer located outside, the second air outlet is set on the wall (8) of the foyer located inside, and the third air outlet is set inside the foyer. The first air outlet is equipped with an outdoor electric air valve (3), and the second air outlet is equipped with an indoor electric air valve (5).

[0009] The input terminals of the central processing unit (11) are respectively connected to the outdoor temperature sensor (1), the porch temperature sensor (6) and the indoor temperature sensor (7) to obtain the outdoor temperature t1, porch temperature t2 and indoor temperature t3 in real time.

[0010] The output of the central processing unit (11) is connected to the control terminal of the variable speed fan (4), the actuator of the outdoor electric air valve (3), and the actuator of the indoor electric air valve (5) respectively. It is used to control the air volume of the variable speed fan (4) and the opening and closing states of the outdoor electric air valve (3) and the indoor electric air valve (5) according to the temperature signal collected by the temperature detection system, so as to realize the anti-infiltration function.

[0011] Furthermore, louvers are provided at the ends of the three air outlets connected to the variable speed fan (4) to form louvered air outlets.

[0012] Furthermore, the air intake / supply mechanism is symmetrically arranged on both sides where the vestibule connects to the building wall.

[0013] This invention also proposes a method for intelligent control of infiltration air based on the above-mentioned intelligent infiltration air control device, comprising the following steps:

[0014] (1) Temperature detection and preliminary judgment: Outdoor temperature t1, porch temperature t2, and indoor temperature t3 are collected respectively. The numerical relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is calculated and compared. The relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is obtained by judgment, and the airflow direction of the infiltration wind at the porch is determined.

[0015] (2) Take in the air to establish an air curtain and cut off the natural infiltration air. According to the airflow direction of the infiltration air at the entrance obtained in step (1), control the air intake / supplier mechanism in the entrance to take in the air from the room and send it to the entrance to suppress the infiltration airflow from the outside to the entrance and into the room, or take in the air from the outside and send it to the entrance to suppress the infiltration airflow from the room to the entrance and out to the outside.

[0016] (3) Air volume compensation step: continuously collect outdoor temperature t1, porch temperature t2, and indoor temperature t3, compare the values ​​of outdoor temperature t1, porch temperature t2, and indoor temperature t3, and calculate the absolute value ΔT of the temperature difference between the porch temperature t2 and the temperature on the non-supply side. If the absolute value ΔT of the temperature difference is less than the threshold A, adjust the air volume supplied to the porch by the air intake / supply mechanism in the porch to increase. If the absolute value ΔT of the temperature difference is equal to the threshold A, keep the air volume supplied to the porch by the air intake / supply mechanism in the porch unchanged. If the absolute value ΔT of the temperature difference is greater than the threshold A, adjust the air volume supplied to the porch by the air intake / supply mechanism in the porch to decrease.

[0017] (4) Real-time temperature detection and air volume fine-tuning, repeat steps (1) to (3) again, control the frequency of repeating steps (1) to (3), dynamically fine-tune the air volume according to the changes in the outdoor environment, so that the absolute value ΔT between the temperature t2 of the porch and the temperature of the non-supply side is equal to the threshold A, so that the infiltration air is zero and the excessive supply air energy consumption is avoided.

[0018] The outdoor temperature t1, the temperature inside the vestibule t2, and the indoor temperature t3 are collected by the temperature detection system and the comparison and calculation of the temperature values ​​are processed by the central processing unit (11). The air intake and air supply actions of the air intake / supply mechanism are driven and executed by the central processing unit (11). The adjustment of the air volume of the air intake / supply mechanism to supply air into the vestibule is driven and executed by the central processing unit (11).

[0019] Furthermore, the magnitude of the temperature relationship and its corresponding infiltration air direction in step (1) include,

[0020] If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2<t3, it indicates that cold outdoor air has infiltrated; if the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1<t2≈t3, it indicates that hot indoor air has infiltrated; if the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1>t2≈t3, it indicates that cold indoor air has infiltrated; if the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2>t3, it indicates that hot outdoor air has infiltrated.

[0021] Furthermore, step (2), the process of taking in air to establish an air curtain, specifically includes the following steps:

[0022] If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2<t3, it means that cold outdoor air is infiltrating. The air intake / supply mechanism in the porch is controlled to draw air from the indoors and send it to the porch, thereby inhibiting the flow of cold outdoor air into the porch and into the indoors.

[0023] If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1<t2≈t3, it means that hot air is seeping out of the room. The air intake / supply mechanism in the porch is controlled to draw air from the outside and send it to the porch, thereby inhibiting the flow of hot air from the room to the porch and to seep out of the room.

[0024] If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1>t2≈t3, it means that cold air is seeping out of the room. The air intake / supply mechanism in the porch is controlled to draw air from the outside and send it to the porch, thereby inhibiting the flow of cold infiltrating air from the room to the porch and to the outside.

[0025] If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2>t3, it means that hot outdoor air is infiltrating. The air intake / supply mechanism in the porch is controlled to draw air from the indoors and send it to the porch, thereby inhibiting the flow of hot outdoor air into the porch and into the indoors.

[0026] Furthermore, in step (2) of establishing an air curtain, the control steps for the air intake / supply mechanism within the vestibule to take in and supply air include:

[0027] When the air intake / supply mechanism in the vestibule draws air from the room and sends it to the vestibule, the central processing unit 11 controls the indoor electric air valve (5) at the vestibule to open and the outdoor electric air valve (3) to close. At the same time, it drives the variable speed fan (4) that controls the air intake / supply mechanism to start, and performs the action of drawing air from the room and sending it to the vestibule.

[0028] When the air intake / supply mechanism in the vestibule draws air from the outside and sends it to the vestibule, the central processing unit 11 controls the indoor electric air valve (5) at the vestibule to close and the outdoor electric air valve (3) to open. At the same time, it drives the variable speed fan (4) that controls the air intake / supply mechanism to start, and performs the action of drawing air from the outside and sending it to the vestibule.

[0029] Furthermore, the threshold A in step (3) is in the range of 0.1-0.5℃.

[0030] The present invention also proposes a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the various steps of the intelligent control method for infiltration air as described in any one of claims 4 to 8.

[0031] This invention proposes an intelligent anti-seepage air control device and its control method. By installing the intelligent anti-seepage air control device at the building entrance, the anti-seepage air volume is adjusted in real time, systematically solving the defects of existing technologies. The specific innovations are as follows:

[0032] 1. Intelligent determination of infiltration airflow direction: Building infiltration is affected by a variety of factors such as building shape, geographical location, indoor and outdoor temperature difference, outdoor wind speed and direction. By comparing the indoor, vestibule and outdoor temperatures, the infiltration airflow direction can be determined, solving the problem of uncertain infiltration airflow direction.

[0033] When infiltration air flows from the outside to the inside, the equipment needs to draw air from the inside and send it to the vestibule to form an air wall at the vestibule, preventing the infiltration air from entering the building. If the infiltration air flows from the outside to the inside, and the equipment draws air from the outside and sends it to the vestibule, it will intensify the entry of outdoor airflow into the building, further increasing the infiltration.

[0034] When infiltration air flows from indoors to outdoors, the equipment needs to draw air from outdoors and supply it to the vestibule, forming an air wall at the vestibule to prevent airflow from inside the building from escaping. According to the principle of air quality balance, this will further reduce the amount of outdoor air entering the building. If, when infiltration air flows from indoors to outdoors, air is still drawn from indoors and supplied to the vestibule, this method of supplying air to the outside will exacerbate the outflow of indoor air to the outside.

[0035] 2. Real-time intelligent control: As the indoor and outdoor temperature difference, outdoor air direction and wind speed change, the volume and direction of the infiltration air volume change in real time. The central processor compares the indoor, outdoor and porch temperatures to determine the current flow direction and volume of the infiltration air, and then adjusts the fan volume and fan intake position (indoor or outdoor air intake). The air intake method directly determines the infiltration prevention effect. Currently, other patents have not considered this. Real-time control is achieved through intelligent control, realizing the requirements of precise and intelligent control.

[0036] 3. Uniform air supply: The larger the air volume supplied by the equipment, the better the anti-seepage effect. If the air outlet is small and uneven, it will cause a blowing sensation and noise. In order to achieve a better air infiltration effect, the fans are evenly arranged on both sides of the vestibule, and the air outlet area is increased. The airflow on both sides is delivered to each other, forming a stable and uniform airflow and pressure inside the vestibule, reducing the blowing sensation and noise, and effectively blocking the entry of infiltrated air.

[0037] 4. Real-time airflow adjustment: Through intelligent control, the direction and volume of infiltration air are determined, and the airflow and air intake position of the anti-infiltration air device are adjusted in real time to achieve the purpose of blocking infiltration air from entering the building. Attached Figure Description

[0038] Figure 1 A plan view of the overall structure of the intelligent control device for preventing air infiltration.

[0039] Among them, 1—outdoor temperature sensor, 2—louvered air vent, 3—outdoor electric air valve, 4—variable speed fan, 5—indoor electric air valve, 6—entrance hall temperature sensor, 7—indoor temperature sensor, 8—wall, 9—inner door, 10—outer door, 11—central processing unit. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the invention.

[0041] like Figure 1 As shown, this invention provides an intelligent airflow control device for preventing air infiltration, which is installed in the vestibule of a building facing outwards. Specifically, the vestibule includes an outer door 10 facing outwards and an inner door 9 facing inwards. Air intake / supply mechanisms are provided on both sides of the vestibule near the building walls. Specifically, taking one side of the vestibule as an example, the air intake / supply mechanism on one side of the vestibule includes louvered air vents 2 respectively arranged opposite each other on the outer wall 8 and the inner wall 8. A third louvered air vent 2 is also provided inside the vestibule. The louvered air vents 2 on the outer side, the inner side, and the louvered air vents 2 inside the vestibule form an air intake / supply mechanism. A variable speed fan 4 is installed in this air intake / supply mechanism. An outdoor electric air valve 3 and an indoor electric air valve 5 are respectively installed inside the vestibule. The outdoor electric air valve 3 is close to the louvered air vent 2 on the outer wall 8, and the indoor electric air valve 5 is close to the louvered air vent 2 on the inner wall 8. The temperature detection system includes an outdoor temperature sensor 1 located outside the vestibule, an indoor temperature sensor 7, and a temperature sensor 6 located inside the vestibule. The central processing unit 11 is located inside the vestibule.

[0042] The specific operation method of the aforementioned anti-infiltration air intelligent control device is as follows: The temperature detection system detects the outdoor temperature t1, the temperature inside the vestibule t2, and the indoor temperature t3 respectively. After collecting the temperature data, the central processing unit 11 performs judgment and processing to further determine the air intake direction of the air intake / supply mechanism and the air volume of the variable speed fan 4. That is, it determines whether air needs to be drawn from the indoor or outdoor environment and sent to the vestibule. It then closes (or opens) the outdoor electric air valve 3 and opens (or closes) the indoor electric air valve 5. Subsequently, the variable speed fan 4 is started to supply air to the vestibule, at which point the indoor and outdoor air mixes. The outdoor temperature sensor 1, the vestibule temperature sensor 6, and the indoor temperature sensor 7 collect the temperatures at three locations to determine the amount of infiltration air. Then, the central processing unit 11 issues a command to control the air volume of the variable speed fan 4, that is, it increases (or decreases) the air volume of the variable speed fan 4 until the set temperature difference of 0.1℃ is reached. The central processing unit 11 controls the variable speed fan 4 to maintain the air supply volume. At this time, the infiltration air volume at the outer door is almost zero, thereby achieving the purpose of preventing infiltration air.

[0043] During the operation of the variable speed fan 4, the temperature changes at three locations (outdoor temperature t1, ventilator temperature t2, and indoor temperature t3) are collected by the outdoor temperature sensor 1, the ventilator temperature sensor 6, and the indoor temperature sensor 7. The central processing unit 11 makes judgments and processes these changes, and adjusts the speed and number of variable speed fans 4 in real time according to different operating conditions, continuously adjusting the air intake direction, air supply direction, and air supply volume.

[0044] The following section provides a detailed explanation of the control method of the aforementioned intelligent anti-seepage wind control device, taking different environments as examples where the relationships between outdoor temperature, vestibule temperature, and indoor temperature vary.

[0045] Example 1

[0046] This embodiment uses a scenario where the outdoor temperature and the porch temperature are close, but the indoor temperature is the hottest, as the first operating condition, to introduce the control method of the anti-seepage air intelligent control device.

[0047] The first step is temperature detection and preliminary judgment. The temperature sensor system collects the first temperature readings: outdoor temperature sensor 1, vestibule temperature sensor 6, and indoor temperature sensor 7. These readings are then sent to the central processing unit 11 for initial judgment. The system calculates and compares the relative values ​​of outdoor temperature t1, vestibule temperature t2, and indoor temperature t3. When t1 ≈ t2 < t3, the outdoor (t1) and vestibule (t2) temperatures are the same, but the outdoor temperature is lower than the indoor temperature (t3). Both the outdoor and vestibule temperatures are colder than the indoor temperature, creating a thermal pressure difference. The indoor hot air, with its lower density, rises, while the outdoor cold air, with its higher density, sinks. Since the vestibule and outdoor temperatures are the same, there is no direct thermal pressure drive. However, the indoor hot air diffuses into the vestibule through the inner door 9 (because t3 > t2). Therefore, the direction of the infiltration air is determined to be that the outdoor cold air flows into the vestibule through the outer door 10 and further into the room through the inner door 9.

[0048] The second step involves determining the airflow direction. The central processing unit 11 calculates the numerical relationship between the outdoor temperature t1, the porch temperature t2, and the indoor temperature t3. The porch temperature is as low as the outdoor temperature (t1≈t2<t3), indicating that a large amount of cold air enters the room through the porch. Using this temperature relationship as an adjustment signal, the central processing unit 11 issues an instruction to close the outdoor electric air valve 3 and open the indoor electric air valve 5. Subsequently, the central processing unit 11 issues an instruction to start the variable speed fan 4, which begins to draw air from the room and pressurizes the porch with the warmer indoor air. At this time, the indoor air and outdoor air mix at the porch, and the positive pressure inhibits the infiltration of cold outdoor air.

[0049] The third step is air volume compensation. In the previous step, the variable speed fan 4 draws air from the room and sends the warmer indoor air into the vestibule, causing the vestibule temperature t2 to start to rise and approach the temperature on the air supply side.

[0050] The temperature sensor system collects a second temperature, specifically outdoor temperature t1, porch temperature t2, and indoor temperature t3 through outdoor temperature sensor 1, porch temperature sensor 6, and indoor temperature sensor 7, respectively. The second temperature value is then sent to the central processing unit 11 for a second judgment and processing. The values ​​of outdoor temperature t1, porch temperature t2, and indoor temperature t3 are calculated and compared, and the difference between the porch temperature and the temperature on the side without air supply is determined.

[0051] If the temperature relationship is t1 < t2 < t3, and t2 - t1 < 0.1℃, the temperature in the pier is still close to the outdoor temperature, indicating that there is still infiltration of cold outdoor air. The central processing unit 11 uses this temperature difference as an adjustment signal to issue an instruction to control the variable speed fan 4 to increase the air volume, so that the air volume drawn from the indoor air to the pier increases. Until the temperature relationship is t1 < t2 < t3 and t2 - t1 = 0.1℃, it means that after the indoor hot air enters the pier, the temperature t2 in the pier is slightly higher than the outdoor temperature t1, forming an air curtain, so that the outdoor air rarely enters the pier again, and the indoor and outdoor air in the pier no longer mix, that is, the infiltration wind is suppressed. The central processing unit 11 issues an instruction to control the variable speed fan 4 to maintain the air supply volume.

[0052] The fourth step involves real-time temperature detection and airflow fine-tuning. As the outdoor environment changes, the central processing unit 11 compares and judges the temperature value obtained from real-time detection, and simultaneously issues instructions to compensate for the airflow. That is, when t1 < t2 < t3 and t2 - t1 > 0.1℃, the central processing unit 11 controls the variable speed fan 4 to reduce the airflow in step three to avoid further energy consumption, until t1 < t2 < t3 and t2 - t1 = 0.1℃. At this point, the central processing unit 11 controls the variable speed fan 4 to maintain the current low airflow. At this time, the infiltration airflow at the outer door is almost zero, achieving the purpose of preventing infiltration.

[0053] Example 2

[0054] This embodiment uses the coldest outdoor temperature and the temperature in the vestibule and indoor temperature as the second working condition to introduce the control method of the anti-seepage wind intelligent control device.

[0055] The first step is preliminary temperature detection and judgment. The temperature is collected for the first time by the temperature sensor system, namely the outdoor temperature sensor 1, the porch temperature sensor 6, and the indoor temperature sensor 7. The outdoor temperature is collected as t1, the porch temperature as t2, and the indoor temperature as t3. Then, the temperature values ​​of the three points are sent to the central processing unit 11 for the first judgment and processing. The relationship between the outdoor temperature t1, the porch temperature t2, and the indoor temperature t3 is calculated and compared. When t1 < t2 ≈ t3, the outdoor temperature (t1) is the coldest, the porch temperature (t2) and the indoor temperature (t3) are the same, there is no temperature difference between the porch and the indoor temperature, but the outdoor temperature is colder. It is determined that the infiltration airflow direction at this time is that the indoor hot air flows through the inner door 9 to the porch and then to the outside.

[0056] The second step is to determine the direction of air intake. The central processing unit 11 calculates the numerical relationship between the outdoor temperature t1, the temperature inside the vestibule t2, and the indoor temperature t3. The temperature inside the vestibule is already the same as the indoor temperature (t1 < t2 ≈ t3), indicating that the cold air has not yet penetrated deeply, but it will soon enter the vestibule. Using this temperature relationship as an adjustment signal, the central processing unit 11 issues an instruction to control the indoor electric air valve 5 to close and the outdoor electric air valve 3 to open. Subsequently, the central processing unit 11 issues an instruction to start the variable speed fan 4, which begins to draw air from the outside and send it into the vestibule. The cold air from the outside is drawn in and mixed with the hot air in the vestibule for preheating. The cold air forms an air curtain to prevent the hot air from seeping out of the vestibule.

[0057] The third step is air volume compensation. In the previous step, the variable speed fan 4 draws air from the outside and delivers the cooler t1 air into the pier, causing the pier temperature t2 to begin to drop and approach the temperature on the air supply side.

[0058] The temperature sensor system collects a second temperature, specifically outdoor temperature t1, porch temperature t2, and indoor temperature t3 through outdoor temperature sensor 1, porch temperature sensor 6, and indoor temperature sensor 7, respectively. The second temperature value is then sent to the central processing unit 11 for a second judgment and processing. The values ​​of outdoor temperature t1, porch temperature t2, and indoor temperature t3 are calculated and compared, and the difference between the porch temperature and the temperature on the side without air supply is determined.

[0059] If the temperature is t1 < t2 < t3, and t3 - t2 < 0.1℃, it means that the temperature in the pier is still close to that in the room, and the hot air in the pier is still seeping out. The central processing unit 11 uses this temperature difference as an adjustment signal to issue a command to control the variable speed fan 4 to increase the air volume, so that the air volume drawn from the outside to the pier increases. Until the temperature values ​​obtained are t1 < t2 < t3 and t3 - t2 = 0.1℃, it means that after the cold air from the outside is sent into the pier, the indoor temperature t3 is slightly higher than the temperature t2 in the pier, forming an air curtain, so that the air in the pier rarely enters the outside, and the indoor and outdoor air in the pier no longer mix. The central processing unit 11 issues a command to control the variable speed fan 4 to maintain the air volume.

[0060] The fourth step involves real-time temperature detection and airflow fine-tuning. As the outdoor environment changes, the central processing unit 11 compares and judges the temperature value obtained in real time, and simultaneously issues instructions to compensate for the airflow. That is, when t1 < t2 < t3 and t3 - t2 > 0.1℃, the central processing unit 11 controls the variable speed fan 4 to reduce the airflow in step three to avoid further energy consumption, until t1 < t2 < t3 and t3 - t2 = 0.1℃. At this point, the central processing unit 11 controls the variable speed fan 4 to maintain the current low airflow. At this time, the infiltration airflow at the outer door is almost zero, achieving the purpose of preventing infiltration.

[0061] Example 3

[0062] This embodiment uses the hottest outdoor temperature and the temperature in the vestibule being close to the indoor temperature as the third operating condition to introduce the control method of the anti-seepage wind intelligent control device.

[0063] The first step is temperature acquisition and preliminary judgment. Temperature is acquired through a temperature sensor system, specifically through outdoor temperature sensor 1, porch interior temperature sensor 6, and indoor temperature sensor 7. The outdoor temperature is collected as t1, the porch interior temperature as t2, and the indoor temperature as t3, respectively. The temperature values ​​from the three locations are then sent to the central processing unit 11 for the first judgment process. The relationship between the outdoor temperature t1, the porch interior temperature t2, and the indoor temperature t3 is calculated and compared. When t1 > t2 ≈ t3, it is determined that a large amount of hot outdoor air has entered the porch. The infiltration airflow flows from the indoor area through the inner door 9 to the porch, and then further through the outer door 10 to the outside.

[0064] The second step is to determine the air intake direction. The central processing unit 11 calculates the numerical relationship between the outdoor temperature t1, the porch temperature t2, and the indoor temperature t3. The porch temperature is the same as the indoor temperature (t1>t2≈t3), indicating that hot air is about to enter the indoor cold air environment. Using this temperature difference relationship as an adjustment signal, the central processing unit 11 issues an instruction to control the indoor electric air valve 5 to close and the outdoor electric air valve 3 to open. Subsequently, the central processing unit 11 issues an instruction to start the variable speed fan 4, which begins to draw air from the outside and send air into the porch, transporting the hotter outdoor airflow into the porch and pressurizing it. At this time, the indoor air and outdoor air in the porch mix, and the positive pressure suppresses the seepage of hot and cold air from the indoor environment.

[0065] The third step is air volume compensation. In the previous step, the variable speed fan 4 draws air from the outside and sends the warmer outdoor air into the vestibule, causing the vestibule temperature t2 to start to rise and approach the temperature on the air supply side.

[0066] The temperature sensor system collects a second set of data, specifically outdoor temperature sensor 1, vestibule temperature sensor 6, and indoor temperature sensor 7, which collect outdoor temperature t1, vestibule temperature t2, and indoor temperature t3, respectively. The second set of temperature data is then sent to the central processing unit 11 for a second judgment and processing. The system calculates and compares the magnitudes of outdoor temperature t1, vestibule temperature t2, and indoor temperature t3, and determines the difference between the vestibule temperature and the temperature on the side without air supply.

[0067] If the temperature is t1 > t2 > t3, and t2 - t3 < 0.1℃, the temperature in the pier is still close to the indoor temperature, indicating that indoor airflow is still entering the pier and cold seepage still exists. The central processing unit 11 uses this temperature difference as an adjustment signal to issue a command to control the variable speed fan 4 to increase the airflow, so that the airflow from the outside to the pier increases until the temperature values ​​are t1 > t2 > t3 and t2 - t3 = 0.1℃. This indicates that after the outdoor hot airflow enters the pier, the temperature t2 inside the pier is slightly higher than the indoor temperature t3, forming an air curtain, so that indoor airflow rarely enters the pier, and the indoor and outdoor air inside the pier no longer mix. The central processing unit 11 issues a command to control the variable speed fan 4 to maintain the airflow.

[0068] The fourth step involves real-time temperature detection and airflow fine-tuning. As the outdoor environment changes, the central processing unit 11 compares and judges the temperature values ​​obtained in real time, and simultaneously issues instructions to compensate for the airflow. That is, when t1 > t2 > t3 and t2 - t3 > 0.1℃, the central processing unit 11 controls the variable speed fan 4 to reduce the airflow in step three to avoid further energy consumption, until t1 > t2 > t3 and t2 - t3 = 0.1℃. At this point, the central processing unit 11 controls the variable speed fan 4 to maintain the current low airflow. At this time, the infiltration airflow at the outer door is almost zero, achieving the purpose of preventing infiltration.

[0069] Example 4

[0070] This embodiment describes the control method of the anti-seepage air intelligent control device under the condition that the outdoor temperature is close to the temperature inside the vestibule, but the indoor temperature is the coldest.

[0071] The first step is temperature acquisition and preliminary judgment. The temperature is acquired for the first time through the temperature sensor system, namely, the outdoor temperature sensor 1, the porch temperature sensor 6, and the indoor temperature sensor 7, which respectively collect the outdoor temperature t1, the porch temperature t2, and the indoor temperature t3. Then, the temperature values ​​of the three points are sent to the central processing unit 11 for the first judgment processing. The relationship between the outdoor temperature t1, the porch temperature t2, and the indoor temperature t3 is calculated and compared. When t1≈t2>t3, it is determined that the outdoor hot air has not yet entered the porch in large quantities. The airflow direction of the infiltration air is that the outdoor hot air flows into the porch through the outer door 10 and further enters the room through the inner door 9.

[0072] The second step involves determining the wind direction. The central processing unit 11 calculates the numerical relationship between the outdoor temperature t1, the temperature inside the vestibule t2, and the indoor temperature t3. The temperature inside the vestibule is the same as the outdoor temperature (t1≈t2>t3), indicating that a large amount of hot air enters the room through the vestibule. Using this temperature difference as an adjustment signal, the central processing unit 11 issues an instruction to close the outdoor electric air valve 3 and start the indoor electric air valve 5. Subsequently, the central processing unit 11 issues an instruction to start the variable speed fan 4 to draw air from the room and send air into the vestibule, mixing the cooler indoor air with the hot air in the vestibule, and using the cool air to form an air curtain to prevent the hot air from the vestibule from seeping into the room.

[0073] The third step is air volume compensation. In the previous step, the variable speed fan 4 draws air from the room and sends the cooler indoor air into the vestibule, causing the vestibule temperature t2 to begin to drop and approach the temperature on the air supply side.

[0074] The temperature is collected a second time by a temperature sensor system, namely, outdoor temperature sensor 1, porch temperature sensor 6, and indoor temperature sensor 7, which respectively collect outdoor temperature t1, porch temperature t2, and indoor temperature t3. The second temperature value is then sent to the central processing unit 11 for a second judgment and processing, which calculates and compares the magnitude of outdoor temperature t1, porch temperature t2, and indoor temperature t3, and determines the difference between the porch temperature and the temperature on the side without air supply.

[0075] If the temperature is t1 > t2 > t3, and t2 - t1 < 0.1℃, the porch temperature is still close to the outdoor temperature, indicating that hot outdoor air is still entering the porch. The central processing unit 11 uses this temperature difference as an adjustment signal to issue a command to control the variable speed fan 4 to increase the air volume, so that the air volume drawn from the indoor air to the porch increases, until the temperature values ​​obtained are t1 > t2 > t3 and t1 - t2 = 0.1℃, indicating that after the indoor airflow enters the porch, the temperature t2 inside the porch is slightly lower than the outdoor temperature t3, so that very little hot outdoor air enters the porch. Inside the porch, the indoor and outdoor air no longer mix. The central processing unit 11 issues a command to control the variable speed fan 4 to maintain the air supply volume.

[0076] The fourth step involves real-time temperature detection and airflow fine-tuning. As the outdoor environment changes, the central processing unit 11 compares and judges the temperature values ​​obtained in real time, and simultaneously issues instructions to compensate for the airflow. That is, when t1 > t2 > t3 and t1 - t2 > 0.1℃, the central processing unit 11 controls the variable speed fan 4 to reduce the airflow in step three until t1 > t2 > t3 and t1 - t2 = 0.1℃. At this point, the central processing unit 11 controls the variable speed fan 4 to maintain the current low airflow. At this time, the infiltration airflow at the outer door is almost zero, achieving the purpose of preventing infiltration.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, combinations, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart air-conditioning device for preventing air infiltration, installed in a vestibule of an exterior wall of a building, the vestibule comprising an outer door (10) facing the outside and an inner door (9) facing the interior, characterized in that, Includes a temperature detection system, an air intake / supply mechanism located in the vestibule, and a central processing unit (11). The temperature detection system includes an outdoor temperature sensor (1) installed outside and inside the building, an indoor temperature sensor (7) installed inside the building, and a temperature sensor (6) installed inside the vestibule. The air intake / supply mechanism includes a variable speed fan (4) and three air outlets connected to the variable speed fan (4). The first air outlet is set on the wall (8) of the foyer located outside, the second air outlet is set on the wall (8) of the foyer located inside, and the third air outlet is set inside the foyer. The first air outlet is equipped with an outdoor electric air valve (3), and the second air outlet is equipped with an indoor electric air valve (5). The input terminals of the central processing unit (11) are respectively connected to the outdoor temperature sensor (1), the porch temperature sensor (6) and the indoor temperature sensor (7) to obtain the outdoor temperature t1, porch temperature t2 and indoor temperature t3 in real time. The output of the central processing unit (11) is connected to the control terminal of the variable speed fan (4), the actuator of the outdoor electric air valve (3), and the actuator of the indoor electric air valve (5) respectively. It is used to control the air volume of the variable speed fan (4) and the opening and closing states of the outdoor electric air valve (3) and the indoor electric air valve (5) according to the temperature signal collected by the temperature detection system, so as to realize the anti-infiltration function.

2. The anti-seepage air intelligent control device according to claim 1, characterized in that, At the ends of the three air outlets connected to the variable speed fan (4), louvers are provided to form louvered air outlets.

3. The anti-seepage air intelligent control device according to claim 1, characterized in that, The air intake / supply mechanism is symmetrically arranged on both sides where the vestibule connects to the building wall.

4. A method for intelligent control of infiltration air based on the intelligent infiltration air control device according to any one of claims 1 to 3, characterized in that, Includes the following steps, (1) Temperature detection and preliminary judgment: Outdoor temperature t1, porch temperature t2, and indoor temperature t3 are collected respectively. The numerical relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is calculated and compared. The relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is obtained by judgment, and the airflow direction of the infiltration wind at the porch is determined. (2) Take in the air to establish an air curtain and cut off the natural infiltration air. According to the airflow direction of the infiltration air at the entrance obtained in step (1), control the air intake / supplier mechanism in the entrance to take in the air from the room and send it to the entrance to suppress the infiltration airflow from the outside to the entrance and into the room, or take in the air from the outside and send it to the entrance to suppress the infiltration airflow from the room to the entrance and out to the outside. (3) Air volume compensation step: continuously collect outdoor temperature t1, porch temperature t2, and indoor temperature t3, compare the values ​​of outdoor temperature t1, porch temperature t2, and indoor temperature t3, and calculate the absolute value ΔT of the temperature difference between the porch temperature t2 and the temperature on the non-supply side. If the absolute value ΔT of the temperature difference is less than the threshold A, adjust the air volume supplied to the porch by the air intake / supply mechanism in the porch to increase. If the absolute value ΔT of the temperature difference is equal to the threshold A, keep the air volume supplied to the porch by the air intake / supply mechanism in the porch unchanged. If the absolute value ΔT of the temperature difference is greater than the threshold A, adjust the air volume supplied to the porch by the air intake / supply mechanism in the porch to decrease. (4) Real-time temperature detection and air volume fine-tuning, repeat steps (1) to (3) again, control the frequency of repeating steps (1) to (3), dynamically fine-tune the air volume according to the changes in the outdoor environment, so that the absolute value ΔT between the temperature t2 of the porch and the temperature of the non-supply side is equal to the threshold A, so that the infiltration air is zero and the excessive supply air energy consumption is avoided. The outdoor temperature t1, the temperature inside the vestibule t2, and the indoor temperature t3 are collected by the temperature detection system and the comparison and calculation of the temperature values ​​are processed by the central processing unit (11). The air intake and air supply actions of the air intake / supply mechanism are driven and executed by the central processing unit (11). The adjustment of the air volume of the air intake / supply mechanism to supply air into the vestibule is driven and executed by the central processing unit (11).

5. The intelligent control method for infiltration air according to claim 4, characterized in that, The magnitude of the temperature relationship and the corresponding direction of the infiltration air in step (1) include, If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2<t3, it indicates that cold outdoor air has infiltrated; if the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1<t2≈t3, it indicates that hot indoor air has infiltrated; if the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1>t2≈t3, it indicates that cold indoor air has infiltrated; if the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2>t3, it indicates that hot outdoor air has infiltrated.

6. The intelligent control method for infiltration air according to claim 5, characterized in that, The process of establishing an air curtain by taking in air in step (2) specifically includes the following steps. If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2<t3, it means that cold outdoor air is infiltrating. The air intake / supply mechanism in the porch is controlled to draw air from the indoors and send it to the porch, thereby inhibiting the flow of cold outdoor air into the porch and into the indoors. If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1<t2≈t3, it means that hot air is seeping out of the room. The air intake / supply mechanism in the porch is controlled to draw air from the outside and send it to the porch, thereby inhibiting the flow of hot air from the room to the porch and to seep out of the room. If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1>t2≈t3, it means that cold air is seeping out of the room. The air intake / supply mechanism in the porch is controlled to draw air from the outside and send it to the porch, thereby inhibiting the flow of cold infiltrating air from the room to the porch and to the outside. If the relationship between outdoor temperature t1, porch temperature t2, and indoor temperature t3 is t1≈t2>t3, it means that hot outdoor air is infiltrating. The air intake / supply mechanism in the porch is controlled to draw air from the indoors and send it to the porch, thereby inhibiting the flow of hot outdoor air into the porch and into the indoors.

7. The intelligent control method for infiltration air according to claim 6, characterized in that, In step (2), during the process of establishing an air curtain, the control steps for the air intake / supply mechanism within the vestibule include: When the air intake / supply mechanism in the vestibule draws air from the room and sends it to the vestibule, the central processing unit (11) controls the indoor electric air valve (5) at the vestibule to open and the outdoor electric air valve (3) to close. At the same time, it drives the variable speed fan (4) that controls the air intake / supply mechanism to start, and performs the action of drawing air from the room and sending it to the vestibule. When the air intake / supply mechanism in the vestibule draws air from the outside and sends it to the vestibule, the central processing unit (11) controls the indoor electric air valve (5) at the vestibule to close and the outdoor electric air valve (3) to open. At the same time, it drives the variable speed fan (4) that controls the air intake / supply mechanism to start, and performs the action of drawing air from the outside and sending it to the vestibule.

8. The intelligent control method for infiltration air according to claim 4, characterized in that, The threshold A in step (3) is in the range of 0.1-0.5℃.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements each step of the intelligent control method for infiltration air as described in any one of claims 4 to 8.

Images