Air purification and circulation system for compartment of motor train unit

Abstract

The invention relates to the technical field of air purification, in particular to a motor train unit compartment air purification and circulation system which comprises an air duct module, an air conditioner module, a control module, a detection module, a drainage module, an air pressure adjusting module, a display module and an emergency module. Wherein the detection module is used for detecting the air quality condition and the passenger condition inside a compartment of the motor train unit and detecting the air pressure condition outside the compartment of the motor train unit, and transmitting data to the control module and the display module; the detection module comprises an air pressure detection unit, an air quality detection unit, a temperature detection unit and a man-made influence detection unit. The invention provides an air purification and circulation system for a compartment of a motor train unit, which can still keep efficient air supply and return, optimize the air purification effect and ensure the comfort of passengers in high-altitude areas and crowded crowds.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly to the air purification and circulation system for the carriages of multiple unit trains. Background Art

[0002] The air purification and circulation system for the carriages of multiple unit trains is an important part of modern high-speed railway trains. Its main purpose is to provide a healthy and comfortable riding environment for passengers. By integrating various functions such as air purification, air circulation, and environmental control, this system can monitor and adjust parameters such as the air quality, temperature, and humidity inside the carriage in real time, effectively remove harmful substances such as dust, bacteria, and viruses in the air, and at the same time ensure smooth air circulation, bringing passengers a fresh and pleasant riding experience. Especially during long-distance trips, an efficient and stable air purification and circulation system can significantly improve the comfort and satisfaction of passengers, which is of great significance for improving the overall service quality and market competitiveness of multiple unit trains.

[0003] However, the existing air purification and circulation systems for multiple unit train carriages still have some deficiencies when dealing with special situations such as high-altitude areas and crowded passengers. In high-altitude areas, due to drastic changes in air pressure, the air pressure difference between the inside and outside of the multiple unit train carriage may cause poor air supply and return, thereby affecting the air purification effect and air circulation efficiency. At the same time, the air in high-altitude areas is thin and has a low oxygen content, which poses higher requirements for the performance of the air purification system. In addition, in the case of crowded passengers, the density of people inside the carriage is large, and the emissions of pollutants such as carbon dioxide and water vapor generated by breathing increase. With limited air circulation space, it is easy to cause deterioration of air quality. When dealing with such situations, the existing systems often have difficulty in responding quickly and adjusting effectively, thus affecting the comfort, health, and safety of passengers. Therefore, developing an efficient air purification and circulation system for multiple unit train carriages that can adapt to high-altitude areas and crowded situations has become an urgent technical problem to be solved. Summary of the Invention

[0004] To solve the above problems, the present invention provides an air purification and circulation system for multiple unit train carriages, which can still maintain efficient air supply and return, optimize the air purification effect, and ensure the comfort of passengers in high-altitude areas and crowded situations.

[0005] To achieve the above object, the technical solution of the present invention is as follows: The air purification and circulation system for multiple unit train carriages includes an air duct module, an air conditioning module, a control module, a detection module, a drainage module, a pressure regulation module, a display module, and an emergency module, wherein:

[0006] The air duct module is arranged at the top and the lower parts on both sides of the EMU car body. The air duct module is used to supply air to the interior of the car body and recycle the air flowing inside the car body. The air duct module includes a supply air unit for supplying air and a return air unit for recycling the air flowing inside the car body.

[0007] The control module is used to receive the signals from the detection module and compare the data transmitted by the detection module with the preset data, so as to activate the air conditioning module, the drainage module, the air pressure regulation module and the emergency module.

[0008] The air conditioning modules are respectively arranged at the top and the lower parts on both sides of the EMU car body. The air conditioning module is used to purify the gas recycled by the return air unit and distribute the gas. The air conditioning module includes an outlet unit, an inlet unit, a purification unit, a waste exhaust unit and a temperature and humidity unit.

[0009] The detection module is respectively used to detect the air quality situation and the passenger situation inside the EMU car body and the air pressure situation outside the EMU car body, and transmit the data to the control module and the display module respectively. The detection module includes an air pressure detection unit, an air quality detection unit, a temperature detection unit and a human impact detection unit.

[0010] The drainage module is used for the management and discharge of the accumulated water in the EMU car body to ensure the dryness and hygiene of the interior environment of the car body.

[0011] The air pressure regulation module is used to adjust the air pressure balance inside and outside the EMU car body according to the data detected by the air pressure detection unit.

[0012] The display module is used to provide real-time feedback on the air quality inside the EMU car body to the train crew and passengers.

[0013] The emergency module is used to independently activate the air conditioning module and the air pressure regulation module bypassing the control module when the data transmitted by the detection module to the control module exceeds the preset data threshold of the control module. The emergency module includes an emergency ventilation unit and an air pressure emergency regulation unit.

[0014] Furthermore, the outlet unit is communicated with the supply air unit, the return air unit is communicated with the inlet unit. The inlet unit is used to convey the air recycled by the return air unit into the air conditioning module. The outlet unit is used to convey the air processed inside the air conditioning module to the supply air unit. The purification unit, the waste exhaust unit and the temperature and humidity unit are all located between the outlet unit and the inlet unit.

[0015] Furthermore, the purification unit includes an air filter, and the air filter is used to capture the air entering from the inlet unit and remove particulate matters such as dust, pollen and bacteria and viruses in the air.

[0016] Furthermore, the waste exhaust unit is used to discharge the particulate matters filtered by the purification unit, and the waste exhaust unit is also used to discharge the air that has passed through the purification unit but does not meet the air supply standard to the outside of the car body.

[0017] Furthermore, the temperature and humidity unit includes a compressor and an electric heater, and the temperature detection unit includes a temperature and humidity sensor. After the detection module receives the humidity data from the temperature and humidity sensor, the dehumidification function in the EMU carriages is realized through the synchronous operation of the compressor and the electric heater. The temperature and humidity unit also includes a refrigerator. After the detection module receives the temperature data from the temperature and humidity sensor, the temperature of the air entering the air-conditioning module is changed by the refrigerator, and the air is cooled or heated to the set temperature according to the preset data of the control module and then output.

[0018] Furthermore, the air pressure detection unit includes an air pressure sensor which real-time monitors the air pressure difference inside and outside the carriage and transmits it to the air pressure regulation module. The air pressure regulation module includes an air pressure regulating valve which adjusts the air pressure balance inside and outside the carriage according to the data of the air pressure sensor.

[0019] Furthermore, the air quality detection unit includes an air quality sensor which real-time detects the carbon dioxide and oxygen concentrations inside the carriage and transmits the data to the detection module.

[0020] Furthermore, the human influence detection unit includes a number of pressure sensors distributed at the positions of the material storage racks. When the material storage rack is placed above the seat of the passengers in the carriage and the passengers below the material storage rack breathe, the carbon dioxide concentration rises. When the carbon dioxide enters the return air unit with the upward air flow, it is easily affected by the obstruction of the luggage, resulting in the aggregation of carbon dioxide under or on top of the material storage rack. Therefore, the pressure sensors are used to real-time detect the luggage distribution inside the carriage, and combined with the air quality sensor, the control module adjusts the outlet position and intensity of the air supply unit to change the path of the carbon dioxide entering the return air unit;

[0021] The human influence detection unit also includes an infrared sensor and a camera installed in the EMU carriage. The camera is used to real-time monitor the abnormal reactions of the passengers inside the carriage, and combined with the infrared sensor to real-time monitor the body temperature of the passengers, so as to judge whether there is an increase in the facial temperature of the passengers caused by the accumulation of carbon dioxide inside the carriage. When the camera compares the facial expressions and skin colors of several passengers and they are not in a situation of dyspnea, but the infrared sensor monitors that the head temperature of these passengers shows an upward trend, the control module controls the air-conditioning module to accelerate the air flow inside the carriage;

[0022] The human influence detection unit also includes a number of ultrasonic sensors which are respectively integrated at the input end of the return air unit and the output end of the air supply unit. The ultrasonic sensors are used to real-time monitor whether there is any luggage, passengers or other obstacles blocking the air duct. Once it is found that the air duct is blocked, the ultrasonic sensors immediately send signals to the control module, and through the display module, the passengers or the staff are alerted to remove the obstacles.

[0023] Further, the emergency ventilation unit is used to automatically start the air conditioning module to enhance the air circulation in the carriage when it detects that the air change rate in the carriage is lower than a preset threshold;

[0024] The air pressure emergency regulation unit is used to assist in regulating the internal air pressure of the carriage to maintain the air pressure balance inside and outside the carriage when the air pressure difference between inside and outside the carriage detected by the air pressure detection unit exceeds the adjustable threshold of the air pressure regulating valve.

[0025] Further, the drainage module includes a water collection unit, a filtration unit, a drainage pump, and a drainage pipe, where:

[0026] The water collection unit is arranged at the bottom or low-lying area of the EMU carriage and is used to collect the accumulated water that may be generated in the carriage, such as air-conditioning condensate or cleaning water;

[0027] The filtration unit is connected between the water collection unit and the drainage pump and is used to filter out the impurities that may be contained in the accumulated water;

[0028] The drainage pump is arranged after the filtration unit and is used to provide water pressure to drain the accumulated water out of the carriage;

[0029] The drainage pipe is connected to the drainage pump and the outside of the carriage to form a drainage path to safely drain the filtered accumulated water to the outside of the carriage;

[0030] When the water level in the water collection unit exceeds the preset threshold, the control module receives a signal from the water level sensor and automatically starts the drainage pump for drainage operations. At the same time, when an abnormality occurs during the drainage process, such as poor drainage or pipeline blockage, the control module will receive an error signal and trigger an alarm, and take maintenance measures.

[0031] The principle and beneficial effects of adopting the above solution are as follows:

[0032] 1. This solution provides an air purification and circulation system for EMU carriages. By integrating multiple functional modules, it forms an efficient and intelligent air purification and circulation system. This system can real-time monitor the environmental parameters inside and outside the EMU carriage, such as air quality, temperature and humidity, air pressure, etc., and automatically adjust strategies for air purification, circulation, temperature and humidity control, and air pressure balance according to these parameters. At the same time, the system also has an emergency response mechanism, which can be quickly activated in extreme situations to ensure the comfort, health and safety of passengers. Specifically, the system realizes the air supply and return in the carriage through the air duct module, and purifies the recycled air through the air conditioning module and then sends it out. The control module compares the data transmitted by the detection module with the preset data and issues instructions to start or adjust the working status of each functional module. The detection module is responsible for real-time monitoring of the environmental parameters inside and outside the carriage, providing a decision-making basis for the control module. The drainage module is responsible for handling the possible accumulated water in the carriage to keep the carriage environment dry and hygienic. The air pressure regulation module automatically adjusts the air pressure balance according to the air pressure difference inside and outside the carriage to ensure the smooth air supply and return. The display module provides real-time feedback on information such as the air quality inside the carriage to train staff and passengers, while the emergency module can be quickly activated at critical moments to ensure the safety of passengers.

[0033] 2. In this solution, when the bullet train is at high altitude and the carriage is crowded, in the face of complex environments such as dense crowds and air pressure fluctuations, especially when the material storage racks are generally set above the passenger seats, the carbon dioxide generated by the passengers' breathing rises with the air flow and is easily blocked by the luggage, resulting in accumulation under or on top of the material storage racks, affecting the air circulation and purification efficiency. By distributing pressure sensors at the positions of the material storage racks in the carriage, the presence of luggage will change the local air pressure distribution and thus be detected by the pressure sensors. These sensors can real-time sense the distribution of the luggage, including the number, position of the luggage and whether it blocks the air duct. By collecting and analyzing this data, the system can build a real-time model of the luggage distribution in the carriage, providing a basis for subsequent air flow optimization. The air quality sensors are responsible for monitoring the carbon dioxide concentration, oxygen content and other gas components that may affect the passengers' health in the carriage, ensuring a comprehensive monitoring of the air quality in the carriage. When the carbon dioxide concentration rises to the preset threshold, the system immediately activates the response mechanism and analyzes the specific location and cause of the carbon dioxide accumulation in combination with the data provided by the pressure sensors. On this basis, through the information collected by the control module, the air outlet position and intensity of the air supply unit are intelligently adjusted. By changing the air supply path, the system can also effectively avoid the blockage of the air flow by the luggage, ensuring that the air can smoothly enter the return air unit for further purification treatment. This intelligent optimization strategy not only improves the air circulation efficiency and purification quality in the carriage, but also significantly reduces the problem of air dead zones caused by luggage blockage. This series of processing methods effectively avoid the accumulation of carbon dioxide in the carriage, ensuring the breathing health of the passengers and providing a good riding experience for the passengers.

[0034] 3. In this solution, when entering high-altitude areas, the infrared sensor can monitor the body temperature of the passengers in the carriage in real time. The phenomenon of rising facial temperature that passengers may experience due to oxygen deficiency caused by the increase in altitude often indicates an abnormal carbon dioxide concentration. By accurately measuring the body temperature changes of the passengers, the infrared sensor provides an important basis for the control module to judge whether there is carbon dioxide accumulation in the carriage. At the same time, the camera is responsible for monitoring the abnormal reactions of the passengers in the carriage in real time, such as shortness of breath and pale complexion. These reactions may be early signs of oxygen deficiency or carbon dioxide poisoning. Through image recognition and algorithm analysis, the system can quickly identify and locate the passengers with abnormalities and promptly activate the emergency response mechanism to ensure the safety of the passengers. The application of ultrasonic sensors in the system further improves the accuracy and efficiency of air duct monitoring. These sensors are respectively integrated at the input end of the return air unit and the output end of the supply air unit. By emitting ultrasonic waves and receiving the reflected signals, they can monitor in real time whether there are luggage, passengers or other obstacles in the air duct. Once it is found that the air duct is blocked, the ultrasonic sensor immediately sends a signal to the control module to trigger the alarm mechanism. At this time, the display module will display the specific location of the obstacle and alert the passengers or staff through the in-car broadcast system to remove the obstacle in time, ensuring the smoothness of air circulation and the smoothness and efficiency of air circulation.

[0035] 4. In this solution, in the face of complex environments such as high altitude and crowded people, when the data transmitted by the detection module to the control module exceeds the preset data threshold, the emergency module will independently activate the air-conditioning module and the air pressure regulation module bypassing the control module to ensure the air circulation and air pressure balance in the carriage in case of emergency. This design not only improves the emergency response speed of the system but also enhances the safety guarantee of the passengers in extreme environments.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic structural block diagram of an embodiment of the air purification and circulation system for the EMU carriage of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The following is a further detailed description through specific embodiments:

[0042] Embodiment 1:

[0043] As shown in the attached Figure 1 drawing: The air purification and circulation system of the EMU carriages includes an air duct module, an air conditioning module, a control module, a detection module, a drainage module, a pressure regulation module, a display module, and an emergency module, where:

[0044] The air duct module is arranged at the top and the lower parts on both sides of the EMU carriage. The air duct module is used to supply air to the interior of the carriage and recycle the air flowing in the carriage. The air duct module includes a supply air unit for supplying air and a return air unit for recycling the air flowing in the carriage.

[0045] The air conditioning module is respectively arranged at the top and the lower parts on both sides of the EMU carriage. The air conditioning module is used to purify the gas recycled by the return air unit and distribute the gas. The air conditioning module includes an outlet unit, an inlet unit, a purification unit, a waste exhaust unit, and a temperature and humidity unit.

[0046] The detection module is respectively used to detect the air quality situation and the occupant situation inside the EMU carriage and the air pressure situation outside the EMU carriage, and transmit the data to the control module and the display module respectively. The detection module includes an air pressure detection unit, an air quality detection unit, a temperature detection unit, and a human influence detection unit.

[0047] The control module is used to receive the signals from the detection module and compare the data transmitted by the detection module with the preset data to activate the air conditioning module, the drainage module, the pressure regulation module, and the emergency module.

[0048] The drainage module is used for the management and discharge of accumulated water in the EMU carriages to ensure the dryness and hygiene of the interior environment of the carriages.

[0049] The air pressure regulation module is used to adjust the air pressure balance inside and outside the EMU carriages according to the data detected by the air pressure detection unit.

[0050] The display module is used to provide real-time feedback on the air quality inside the EMU carriages to train staff and passengers.

[0051] The emergency module is used to independently start the air conditioning module and the air pressure regulation module bypassing the control module when the data transmitted by the detection module to the control module exceeds the preset data threshold of the control module. The emergency module includes an emergency ventilation unit and an air pressure emergency regulation unit.

[0052] The outlet unit is connected to the air supply unit, the return air unit is connected to the inlet unit. The inlet unit is used to transport the air recovered by the return air unit to the inside of the air conditioning module. The outlet unit is used to transport the air processed inside the air conditioning module to the air supply unit. The purification unit, the waste exhaust unit and the temperature and humidity unit are all located between the outlet unit and the inlet unit.

[0053] The purification unit includes an air filter, which is used to capture the air entering from the inlet unit and remove particulate matters such as dust, pollen and bacteria and viruses in the air.

[0054] The waste exhaust unit is used to discharge the particulate matters filtered by the purification unit, and the waste exhaust unit is also used to discharge the air that has passed through the purification unit but does not meet the air supply standard to the outside of the carriage.

[0055] The temperature and humidity unit includes a compressor and an electric heater. The temperature detection unit includes a temperature and humidity sensor. When the detection module receives the humidity data of the temperature and humidity sensor, the dehumidification function inside the EMU carriage is realized through the synchronous operation of the compressor and the electric heater. The temperature and humidity unit also includes a refrigerator. When the detection module receives the temperature data of the temperature and humidity sensor, the temperature of the air entering the air conditioning module is changed by the refrigerator, and the air is cooled or heated to the set temperature according to the preset data of the control module and then output.

[0056] The air quality detection unit includes an air quality sensor, which real-time detects the carbon dioxide and oxygen concentrations inside the carriage and transmits the data to the detection module.

[0057] The human influence detection unit includes several pressure sensors distributed at the positions of the material storage racks. When the material storage rack is placed above the seat of the passengers in the carriage, and the passengers below the material storage rack breathe, the carbon dioxide concentration rises. When the carbon dioxide enters the return air unit with the upward airflow, it is easily affected by the obstruction of the luggage, resulting in the aggregation of carbon dioxide under or on the top of the material storage rack. Therefore, the pressure sensors are used to detect the luggage distribution in the carriage in real time, and combined with the air quality sensor, the control module adjusts the outlet position and intensity of the air supply unit to change the path of the carbon dioxide entering the return air unit.

[0058] The human influence detection unit also includes infrared sensors and cameras installed in the EMU carriage. The cameras are used to monitor the abnormal reactions of the passengers in the carriage in real time, and combined with the infrared sensors to monitor the body temperature of the passengers in real time, so as to judge whether there is an increase in the facial temperature of the passengers caused by the accumulation of carbon dioxide in the carriage. When the cameras compare the facial expressions and skin colors of several passengers and they are not in a state of dyspnea, but the infrared sensors detect that the head temperatures of these passengers show an upward trend, the control module controls the air-conditioning module to accelerate the air flow in the carriage.

[0059] The human influence detection unit also includes several ultrasonic sensors, which are respectively integrated at the input end of the return air unit and the output end of the air supply unit. The ultrasonic sensors are used to monitor in real time whether there are luggage, passengers or other obstacles blocking the air duct. Once it is found that the air duct is blocked, the ultrasonic sensors immediately send signals to the control module, and the display module alerts the passengers or staff to remove the obstacles.

[0060] The specific implementation process is as follows: During the running of the EMU, especially under high-altitude conditions and when the carriage is crowded with people, problems such as poor air circulation, rising carbon dioxide concentration, and declining air quality are particularly prominent. Under normal circumstances, the air in the EMU carriage enters the air-conditioning module through the return air unit. After the air filter filters out particulate matters such as dust, pollen, and bacteria and viruses in the air, the waste discharge unit will detect whether the air filtered by the air filter can be recycled and discharged back into the carriage. The waste discharge unit will discharge the air that does not meet the air supply standard, while the air that meets the air supply standard will enter the temperature and humidity unit. The temperature and humidity unit monitors the temperature in the carriage according to the temperature and humidity sensors. The control module judges whether the temperature data is too high or too low, changes the temperature of the air entering the air-conditioning module through the cooler, and cools or heats the air to the set temperature according to the preset data of the control module and then outputs it to the air supply unit.

[0061] When in a crowded carriage, the carbon dioxide exhaled by passengers increases. Facing complex environments such as dense crowds and air pressure fluctuations, especially when the material storage racks are generally set above the passenger seats, the carbon dioxide generated by passengers' breathing rises with the airflow and is easily blocked by luggage, thus accumulating under or on top of the material storage racks, affecting the air circulation and purification efficiency. First of all, pressure sensors are distributed at the positions of the material storage racks in the carriage. The presence of luggage will change the local air pressure distribution, which is then captured by the pressure sensors. These sensors can real-time sense the distribution of luggage, including the number, position of the luggage, and whether it blocks the air duct. By collecting and analyzing this data, the system can build a real-time model of the luggage distribution in the carriage, providing a basis for subsequent air flow optimization. At the same time, the air quality sensor is responsible for monitoring the carbon dioxide concentration, oxygen content, and other gas components that may affect the health of passengers in the carriage, ensuring a comprehensive monitoring of the air quality in the carriage. When the carbon dioxide concentration rises to the preset threshold, the system immediately activates the response mechanism and analyzes the specific location and cause of the carbon dioxide accumulation in combination with the data provided by the pressure sensors. On this basis, the control module intelligently adjusts the outlet position and intensity of the air supply unit according to the information collected. For example, if the system detects carbon dioxide accumulation under the material storage rack, the control module will adjust the air supply unit to provide a stronger airflow to this area to promote the diffusion and discharge of carbon dioxide. At the same time, by changing the air supply path, the system can also effectively avoid the blockage of the airflow by luggage, ensuring that the air can smoothly enter the return air unit for further purification. This intelligent optimization strategy not only improves the air circulation efficiency and purification quality in the carriage but also significantly reduces the problem of air dead zones caused by luggage blockage.

[0062] Especially when entering high-altitude areas, the oxygen required by the occupants increases. The infrared sensor can monitor the body temperature of the occupants in the carriage in real time. This function is particularly important in high-altitude areas because as the altitude increases, the rising facial temperature of the occupants due to hypoxia often indicates an abnormal carbon dioxide concentration. The infrared sensor provides an important basis for the control module to judge whether there is carbon dioxide accumulation in the carriage by precisely measuring the body temperature changes of the occupants. At the same time, the camera is responsible for monitoring the abnormal reactions of the occupants in the carriage in real time, such as rapid breathing and pale complexion. These reactions may be early signals of hypoxia or carbon dioxide poisoning. Through image recognition and algorithm analysis, the system can quickly identify and locate the occupants with abnormalities and promptly activate the emergency response mechanism to ensure the safety of the occupants. The application of ultrasonic sensors in the system further improves the accuracy and efficiency of air duct monitoring. These sensors are respectively integrated at the input end of the return air unit and the output end of the supply air unit. By emitting ultrasonic waves and receiving the reflected signals, they monitor in real time whether there are luggage, occupants or other obstacles in the air duct. Once it is found that the air duct is blocked, the ultrasonic sensor immediately sends a signal to the control module to trigger the alarm mechanism. At this time, the display module will display the specific location of the obstacle and alert the occupants or staff through the in-car broadcast system to remove the obstacle in time to ensure the smooth air circulation.

[0063] Integrating the human influence detection unit and the air quality detection unit, the control module can intelligently adjust the rates of the supply air unit and the return air unit to achieve the effect of accelerating the air flow in the carriage.

[0064] Embodiment 2:

[0065] As shown in the Figure 1 attachment, the difference from Embodiment 1 is that the air pressure detection unit includes an air pressure sensor. The air pressure sensor monitors the air pressure difference inside and outside the carriage in real time and transmits it to the air pressure regulation module. The air pressure regulation module includes an air pressure regulating valve. The air pressure regulating valve adjusts the air pressure balance inside and outside the carriage according to the data of the air pressure sensor.

[0066] The emergency ventilation unit is used to automatically start the air conditioning module to strengthen the air circulation in the carriage when the air change rate in the carriage is lower than the preset threshold.

[0067] The air pressure emergency regulation unit is used to assist in regulating the internal air pressure of the carriage to maintain the air pressure balance inside and outside the carriage when the air pressure difference inside and outside the carriage detected by the air pressure detection unit exceeds the adjustable threshold of the air pressure regulating valve.

[0068] The specific implementation process is as follows: When the EMU carriage is running at high speed, it is particularly important to maintain the air pressure balance between the inside and outside of the carriage, especially in high-altitude areas where the external air pressure is higher than normal. The air pressure sensor can monitor the air pressure difference inside and outside the carriage in real time to ensure the accuracy and timeliness of the data. When the air pressure sensor detects the difference in air pressure inside and outside the carriage, it will immediately transmit the data to the air pressure regulating module. The air pressure regulating valve can automatically adjust the opening according to the size and direction of the air pressure difference, thereby controlling the air pressure in the carriage and ensuring that passengers can enjoy a stable riding environment even in high-altitude areas with drastic air pressure fluctuations.

[0069] However, in the face of extreme air pressure changes, the air pressure regulating valve alone may not be able to completely maintain the balance of air pressure inside and outside the cabin. At this time, the emergency ventilation unit and the air pressure emergency regulating unit will play a key role. The emergency ventilation unit can detect when the air change rate in the cabin is lower than the preset threshold, and automatically start the air conditioning module to strengthen the air circulation in the cabin and increase the air change rate, thereby ensuring the freshness and circulation of the air in the cabin.

[0070] When the air pressure detection unit detects that the difference in air pressure inside and outside the carriage exceeds the adjustable threshold of the air pressure regulating valve, the air pressure emergency adjustment unit activates the auxiliary adjustment mechanism, such as opening additional vents or adjusting the carriage structure, to quickly and effectively adjust the air pressure inside the carriage, maintain the balance of air pressure inside and outside the carriage, and ensure the safety and comfort of the passengers. The application of this comprehensive control strategy not only improves the air circulation and purification efficiency of EMU carriages in high-altitude environments, but also significantly enhances the stability of air pressure inside the carriage and the comfort of passengers.

[0071] Embodiment 3:

[0072] As attached Figure 1 As shown, the difference from Example 2 is that the drainage module includes a water collection unit, a filtering unit, a drainage pump and a drainage pipeline, wherein:

[0073] The water collection unit is set at the bottom or low-lying area of ​​the EMU carriage to collect accumulated water that may be generated in the carriage, such as air-conditioning condensate or cleaning water.

[0074] The filter unit is connected between the water collection unit and the drainage pump, and is used to filter out impurities that may be contained in the accumulated water.

[0075] The drainage pump is arranged after the filter unit and is used to provide water pressure to discharge the accumulated water out of the vehicle compartment.

[0076] The drainage pipe connects the drainage pump to the outside of the car to form a drainage path, which safely discharges the filtered accumulated water to the outside of the car.

[0077] When the water level in the water collection unit exceeds the preset threshold, the control module receives a signal from the water level sensor and automatically starts the drainage pump for drainage operations. At the same time, when an abnormality occurs during the drainage process, such as poor drainage or pipeline blockage, the control module will receive an error signal, trigger an alarm, and take maintenance measures.

[0078] The specific implementation process is as follows: In high-altitude areas, the EMU carriages not only face challenges such as air pressure fluctuations and air quality changes, but also need to cope with the precipitation problems at high altitudes. The water collection unit can quickly collect the accumulated water that may be generated in the carriage, including air-conditioning condensate, cleaning water, etc. This design ensures that the accumulated water will not accumulate in the carriage, thus avoiding safety hazards such as dampness and slipping caused by the accumulated water. The filtering unit is connected between the water collection unit and the drainage pump and can effectively filter out impurities that may be contained in the accumulated water, such as dust, hair, grease, etc., thus avoiding these impurities from blocking the drainage pipeline or causing secondary pollution to the environment. This step ensures the smooth and efficient drainage process. The drainage pump discharges the filtered accumulated water out of the carriage smoothly by providing sufficient water pressure. The design of the drainage pump fully considers the special environment in high-altitude areas and ensures its stable operation under extreme conditions such as low temperature and low pressure. The drainage pipeline is then connected to the outside of the carriage for drainage operations.

[0079] Obviously, the above embodiments are only examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. The air purification and circulation system of the EMU carriage is characterized by: It includes an air duct module, an air conditioning module, a control module, a detection module, a drainage module, an air pressure regulating module, a display module and an emergency module, wherein: The air duct module is arranged on the top and lower parts of both sides of the EMU carriage. The air duct module is used to supply air to the interior of the carriage and recover the air flowing in the carriage. The air duct module includes an air supply unit for supplying air and a return air unit for recovering the air flowing in the carriage. The air conditioning modules are arranged on the top and lower parts of both sides of the EMU carriages. The air conditioning modules are used to purify the gas recovered by the return air unit and distribute the gas. The air conditioning modules include an outlet unit, an inlet unit, a purification unit, an exhaust unit and a temperature and humidity unit. The detection module is used to detect the air quality and passenger conditions inside the EMU carriage and the air pressure outside the EMU carriage, and transmit the data to the control module and the display module respectively. The detection module includes an air pressure detection unit, an air quality detection unit, a temperature detection unit and a human impact detection unit; The control module is used to receive the signal from the detection module and compare the data transmitted by the detection module with the preset data to start the air conditioning module, the drainage module, the air pressure regulation module and the emergency module; The drainage module is used to manage and drain the accumulated water in the EMU carriage to ensure the dryness and hygiene of the internal environment of the carriage; The air pressure regulating module is used to adjust the air pressure balance inside and outside the EMU carriage according to the data detected by the air pressure detection unit; The display module is used to provide real-time feedback of the air quality in the EMU compartment to train staff and passengers; The emergency module is used to independently start the air conditioning module and the air pressure regulating module by bypassing the control module when the data transmitted from the detection module to the control module exceeds the preset data threshold of the control module. The emergency module includes an emergency ventilation unit and an air pressure emergency regulating unit.

2. The EMU compartment air purification and circulation system according to claim 1 is characterized in that: The outlet unit is connected to the air supply unit, and the return air unit is connected to the inlet unit. The inlet unit is used to transport the air recovered by the return air unit to the inside of the air-conditioning module, and the outlet unit is used to transport the air processed inside the air-conditioning module to the air supply unit. The purification unit, exhaust unit and temperature and humidity unit are all located between the outlet unit and the inlet unit.

3. The EMU compartment air purification and circulation system according to claim 2 is characterized in that: The purification unit includes an air filter, which is used to capture the air entering from the inlet unit and remove particulate matter such as dust, pollen, bacteria and viruses in the air.

4. The EMU compartment air purification and circulation system according to claim 3 is characterized in that: The exhaust unit is used to discharge the particulate matter filtered by the purification unit, and the exhaust unit is also used to discharge the air that has passed through the purification unit but does not meet the air supply standard to the outside of the vehicle.

5. The EMU compartment air purification and circulation system according to claim 4 is characterized in that: The temperature and humidity unit includes a compressor and an electric heater, and the temperature detection unit includes a temperature and humidity sensor. When the detection module receives the humidity data from the temperature and humidity sensor, the dehumidification function in the EMU compartment is realized through the synchronous operation of the compressor and the electric heater. The temperature and humidity unit also includes a refrigerator. When the detection module receives the temperature data from the temperature and humidity sensor, the temperature of the air entering the air-conditioning module is changed through the refrigerator, and the air is cooled or heated to the set temperature according to the preset data of the control module before being output.

6. The EMU compartment air purification and circulation system according to claim 5, characterized in that: The air pressure detection unit includes an air pressure sensor, which monitors the air pressure difference inside and outside the car in real time and transmits it to the air pressure regulating module. The air pressure regulating module includes an air pressure regulating valve, which adjusts the air pressure balance inside and outside the car according to the data of the air pressure sensor.

7. The EMU carriage air purification and circulation system according to claim 6, characterized in that: The air quality detection unit includes an air quality sensor, which detects the carbon dioxide and oxygen concentrations in the vehicle cabin in real time and transmits the data to the detection module.

8. The EMU compartment air purification and circulation system according to claim 7, characterized in that: The human impact detection unit includes a number of pressure sensors distributed at the material storage rack. When the material storage rack is placed above the seat of the passenger in the car, the passenger below the material storage rack breathes, and the carbon dioxide concentration rises. When the carbon dioxide enters the return air unit with the rising air flow, it is easily blocked by the luggage, causing the carbon dioxide to gather under or on the top of the material storage rack. Therefore, the pressure sensor is used to detect the distribution of luggage in the car in real time. In combination with the air quality sensor, the control module adjusts the air outlet position and intensity of the air supply unit to change the path of carbon dioxide entering the return air unit; The human impact detection unit also includes an infrared sensor and a camera arranged in the EMU compartment. The camera is used to monitor abnormal reactions of passengers in the compartment in real time, and in combination with the infrared sensor, monitor the body temperature of passengers in real time to determine whether there is carbon dioxide accumulation in the compartment that causes the temperature of passengers' faces to rise. When the camera compares the facial expressions and skin color of several passengers and finds that they are not in a state of difficulty breathing, but the infrared sensor detects that the head temperature of such passengers is on the rise, the control module controls the air conditioning module to speed up the air flow in the compartment; The human impact detection unit also includes a number of ultrasonic sensors, which are respectively integrated at the input end of the return air unit and the output end of the air supply unit. The ultrasonic sensors are used to monitor in real time whether there are luggage, passengers or other obstacles blocking the air duct. Once the air duct is found to be blocked, the ultrasonic sensor immediately sends a signal to the control module, alerting the passengers or staff through the display module to remove the obstacle.

9. The EMU compartment air purification and circulation system according to claim 8, characterized in that: The emergency ventilation unit is used to detect when the air change rate in the cabin is lower than a preset threshold, and automatically activate the air conditioning module to enhance the air circulation in the cabin; The air pressure emergency regulating unit is used to assist in regulating the air pressure inside the vehicle compartment to maintain the air pressure balance inside and outside the vehicle compartment when the air pressure difference inside and outside the vehicle compartment detected by the air pressure detection unit exceeds the adjustable threshold of the air pressure regulating valve.

10. The EMU compartment air purification and circulation system according to claim 9, characterized in that: The drainage module includes a water collection unit, a filtration unit, a drainage pump and a drainage pipeline, wherein: The water collection unit is installed at the bottom or low-lying area of ​​the EMU carriage to collect the accumulated water that may be generated in the carriage, such as air conditioning condensate or cleaning water; The filter unit is connected between the water collection unit and the drainage pump to filter out impurities that may be contained in the accumulated water; The drainage pump is arranged after the filter unit and is used to provide water pressure to discharge the accumulated water out of the vehicle compartment; The drainage pipe connects the drainage pump to the outside of the carriage to form a drainage path, which safely discharges the filtered accumulated water to the outside of the carriage; When the water level in the water collection unit exceeds the preset threshold, the control module receives the signal from the water level sensor and automatically starts the drainage pump to drain the water. At the same time, when an abnormality occurs during the drainage process, such as poor drainage or pipe blockage, the control module will receive the signal and trigger an alarm, and take maintenance measures.

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