769results about "Railway heating/cooling" patented technology

The invention belongs to the technical field of rail transit intelligent monitoring, and particularly relates to an intelligent monitoring method and device for a rail transit air conditioning system. According to the method, the sensor array with the self-adaptive sampling frequency is used for collecting the multi-modal operation data, then the collected multi-modal operation data is preprocessed, the feature degradation track atlas is established, powerful data support is provided for subsequent fault early warning and diagnosis, and the fault diagnosis accuracy is improved. Historical abnormal events are introduced to dynamically correct the health state evaluation base line, the timeliness and accuracy of the evaluation base line are ensured, in comparative analysis of real-time operation data and the dynamic evaluation base line, a health degree scoring and dynamic threshold mechanism is adopted, quantitative evaluation of the health state of the air conditioner system is achieved, and the evaluation accuracy of the health state of the air conditioner system is improved. According to the method, a decision graph containing fault diagnosis and predictive maintenance suggestions is generated by analyzing the propagation path and time sequence relevance of abnormal parameters in the air conditioning system and combining an equipment topological relation graph, so that the troubleshooting and repairing efficiency is improved.

The utility model relates to the technical field of adjustable locomotive air duct structures applied to center sill bearing, in particular to an adjustable locomotive air duct structure applied to center sill bearing, which comprises an air duct body and an air volume adjusting device. An air inlet is formed in one end of the air duct body, arc-shaped flow guide plates are arranged on the two sides of the air inlet, and a near-end ventilation air duct and a far-end ventilation air duct are arranged on the side faces of the arc-shaped flow guide plates respectively. Three sets of air volume adjusting devices are arranged on the side, close to the air inlet, of the near-end ventilation air duct. Three sets of air volume adjusting devices are arranged on the side, away from the air inlet, of the near-end ventilation air duct. The air volume adjusting device comprises an air outlet and an air volume adjusting plate, and the air outlet is connected with the air volume adjusting plate in a sliding mode. A frame ventilation cavity is optimized, the problems of air pressure slowing down and air volume attenuation during long-distance ventilation of the locomotive are solved, the air volume and the air pressure of each air outlet can be further controlled through the air volume adjusting device, and air volume distribution of each air outlet can be matched to the maximum extent.

The invention provides a vehicle body top cover structure, a railway vehicle, electronic equipment and a method. The car body top cover structure comprises a middle top cover, an air duct, a longitudinal beam and top cover edge beams, the air duct and the longitudinal beam are connected to the lower end of the middle top cover, the top cover edge beams are connected to the two ends of the middle top cover, the top cover edge beams extend in the length direction and divide the section of each top cover edge beam into a plurality of special-shaped cavities, and the cross section of each top cover edge beam is a special-shaped section with one end becoming wider from narrow. The thin end of the special-shaped section is connected with the middle top cover; the middle top cover comprises an upper face plate, a framework and a lower face plate which are sequentially stacked from top to bottom, the upper face plate, the framework and the lower face plate are connected through tough glue, a foam plate is embedded in the framework, and the longitudinal beams are arranged on the two sides of the air channel respectively. The top cover edge beam air conditioner bearing and lightweight design is achieved, and under the constraint conditions of air conditioner bearing, integrated overall deformation, torsional deformation and the like, overall deformation is controllable in the two-time vehicle weight ultimate bearing state.

The invention discloses a remote intelligent monitoring method for the health condition of an air conditioning system of a rail transit vehicle, and relates to the technical field of intelligent control, the rail transit air conditioning system is initialized, data are collected in real time, and the data are sent to edge computing equipment through wireless communication; after edge calculation, the preprocessed data are compared with preset parameters, and the current state of the air conditioner system is calculated; based on the state, a physical model is constructed for fault deduction, operation of the air conditioning system is simulated through thermal load prediction and pressure change analysis, and a fault deduction report is generated through comparison with real-time data; inputting the report into a machine learning algorithm for analysis, and judging a fault type and a fault source according to historical fault data and an air conditioning system working mode; and in combination with remote intelligent self-adaptive control, system parameters are optimized, and the state of the air conditioning system is updated. Real-time acquisition, modeling deduction and machine learning are fused, the fault diagnosis accuracy and response speed are improved, and the reliability and intelligence of the rail transit air conditioning system are enhanced.

The invention discloses a rail locomotive air conditioner low-harmonic variable-frequency power supply system and a control method, and relates to the technical field of harmonic control. According to the method, historical harmonic fault data are analyzed to determine a harmonic sensitive section, and multiple control strategies are determined based on the harmonic sensitive section; starting the locomotive air conditioner, collecting cold start load data of the locomotive air conditioner in real time, and preprocessing the cold start load data to obtain a standard cold start data set; extracting a cold start load index in the standard cold start data set, when the cold start load is judged to be abnormal based on the cold start load index, extracting harmonic trend data, a harmonic trend index and a frequency output function in the standard cold start data set, calculating and outputting a comprehensive execution risk value, and determining a start risk level based on the comprehensive execution risk value. And selecting and executing a corresponding control strategy, and dynamically adjusting the starting frequency of the locomotive air conditioner based on the control strategy. By means of the method, the air conditioner starting stability under the complex working condition can be greatly improved.

The invention provides a CO2 transcritical rail vehicle air conditioner heat pump system and a control method thereof, and belongs to the technical field of rail vehicle air conditioner control. The control method comprises the steps that heat pump system parameter data and vehicle running state data are obtained, and a vehicle condition mode is determined according to the vehicle running state data; according to the determined vehicle condition mode and the heat pump system parameter data, a high-pressure side pressure set value is generated through a preset self-adaptive heat pump regulation and control model; calculating an opening value of the electronic expansion valve according to the generated pressure set value; and according to the generated pressure set value, the rotating speed of the inverter compressor is adjusted through PID closed-loop control, and the opening degree of the electronic expansion valve is adjusted according to the calculated opening degree value of the expansion valve. According to the CO2 transcritical railway vehicle air conditioner heat pump control method, the energy efficiency of a heat pump system is effectively improved, and the adaptability of the heat pump system is greatly improved.

The application discloses a traction transformer control cabinet and a rail train, and relates to the technical field of rail transit vehicles.The traction transformer control cabinet comprises a detachable shell and a control module arranged in the detachable shell; wherein the control module is used for determining the fan frequency of the fan in the cooling system of the traction transformer according to the first collection data sent by the whole vehicle controller of the rail train and the second collection data sent by the traction transformer, so as to utilize the fan frequency to perform frequency conversion control on the fan; the first collection signal comprises vehicle speed data, and the second collection signal comprises oil temperature data; through the arrangement of the traction transformer control cabinet, the control module in the traction transformer control cabinet performs frequency conversion control on the cooling fan according to the data such as the vehicle speed of the train and the oil temperature of the traction transformer, the low noise and the intelligentization of the traction transformer are realized, the noise of the rail train can be effectively reduced, and the passenger comfort is improved.

The invention provides a control method and a power-saving analysis method of a railway vehicle air conditioning system, and relates to the technical field of railway vehicle air conditioning system control. The control method comprises the steps that at least one environmental parameter sensor distributed in each compartment is used for collecting at least one piece of environmental parameter data, and the collected environmental parameter data are classified and marked according to compartment numbers; on the basis of the collected environment parameter data and a preset air conditioner regulation and control strategy, an execution command used for railway vehicle partition control is generated; and an execution command is sent to an execution unit of the corresponding compartment, so that the execution unit responds to the execution command and executes dynamic adjustment, and partition control over the air conditioning system of the railway vehicle is achieved. According to the method, through decision making of zone control, dynamic adjustment, intelligent management and data driving, the comfort, reliability and energy utilization efficiency of the rail vehicle air conditioning system are remarkably improved, and meanwhile the adaptability and flexibility of the system are enhanced.

The utility model discloses a heat dissipation structure of train vehicle air conditioner control equipment, which relates to the technical field of rail transit and comprises a box body, a fan fixing box, an alternating current device contact module and a heat dissipation fan. The box body is provided with a containing cavity with an opening in the top, the fan fixing box covers the opening of the containing cavity, an air outlet is formed in the fan fixing box, the multiple cooling fans are installed in the fan fixing box, and hot air in the containing cavity is exhausted through the cooling fans; a plurality of alternating current contactor modules are arranged in the accommodating cavity of the box body side by side, each alternating current contactor module comprises a board card fixed in the accommodating cavity along the vertical direction, and each board card is provided with a radiator; the beneficial effects of the utility model are that the heat accumulated in the AC contactor module can be reduced, the service life is prolonged, the working efficiency of the AC contactor module is improved, and the long-term stable work of the AC contactor module is ensured.

The invention provides a comfort-based big data analysis and adjustment system for an urban rail transit vehicle air conditioner, and relates to the technical field of data analysis and adjustment. Comprising a data acquisition module, a data analysis module, a control strategy module and a control execution module. The data acquisition module acquires related data of urban rail transit vehicles in real time; the data analysis module obtains the sendible temperature with the highest comfort at present; the control strategy module is used for constructing a control model based on a random forest and obtaining a real-time adjustment strategy; the control execution module adjusts the temperature, the humidity and the wind speed. The comfort level of passengers can be improved, personalized comfort adjustment is achieved, energy can be saved, consumption can be reduced, the operation efficiency can be improved, and environmental protection is facilitated. Meanwhile, through intelligent operation and maintenance, the maintenance cost can be reduced, and the reliability of the system is improved.

The invention relates to the technical field of rail transit electrical equipment monitoring, and discloses a thermal fault cooperative monitoring method and system for a silicon carbide module in a rail transit frequency converter. According to the method, multi-dimensional parameters of junction temperature, leakage current, threshold voltage and thermal stress are collected, a loss model is constructed based on an FOC algorithm to calculate the junction temperature, and the three-dimensional parameters are associated to form fault precursor identification logic; a threshold value is dynamically adjusted in combination with working condition and service life double factors, and graded early warning is triggered through an SIL2-level safety closed loop; the fault risk is predicted based on the LSTM model, and operation and maintenance instruction closed-loop interaction is realized. The system comprises a thermal monitoring module, a collaborative analysis module, a graded early warning module and a data interaction module, and a large number of existing components are reused. According to the method, the problems of multi-physics field missing report, poor threshold adaptation and weak safety operation and maintenance are solved, the missing report rate is reduced to 0.3%, the false alarm rate is reduced to 2%, the operation and maintenance time is shortened by 75%, and the method is suitable for high-speed rail and subway frequency converter scenes.

The invention provides an internal combustion motor train unit equipment compartment and an internal combustion motor train unit, and the equipment compartment comprises two apron boards which extend along the length direction of a train body and are arranged at intervals along the width direction of the train body; the bottom plate is parallel to the bottom of the vehicle body and is lapped between the two apron boards; the two end plates are arranged at intervals in the length direction, and a containing space used for containing an internal combustion power pack is defined by the two end plates, the apron board, the bottom plate and the vehicle body; the first ventilation module comprises a first air outlet and a plurality of first fans arranged around the internal combustion power pack, and the first air outlet is formed in the bottom plate and used for driving at least part of heat generated by the internal combustion power pack to be discharged out of the containing space through the first air outlet; and the second ventilation module is used for driving residual heat generated by the internal combustion power pack and heat of other equipment in the cabin to be discharged out of the accommodating space and allowing cold air outside the cabin to be supplemented to the accommodating space. The exhaust air rate and the pressure head of the second ventilation module are larger than those of the first ventilation module, so that overall ventilation of the equipment compartment and local ventilation of the internal combustion power pack are both considered.

An object of the present invention is to provide an air conditioner for a rail vehicle that is excellent in cleanliness and comfort by cleaning the air conditioner at an appropriate timing without causing discomfort to passengers. An air conditioner for a rail vehicle including a vehicle control system includes: a refrigeration cycle device 3 that can execute a cleaning operation; and an air conditioning control device 4 that controls the refrigeration cycle device, and the air conditioning control device 4 can communicate with the vehicle control system 2 and causes the refrigeration cycle device 3 to execute a cleaning operation on the basis of status information obtained from the vehicle control system 2.

The application discloses a double air door air volume regulating valve for rail transit, and particularly relates to a rail transit ventilation system, which comprises: symmetrical louver air valves, which are linearly arranged and rotationally connected with regulating blades; and a bidirectional driving assembly, which comprises coupled driving wheels, and a transmission belt is arranged between the two driving wheels and two groups of the regulating blades, and the transmission belt is in a T shape and surrounds the driving wheels; and the two groups of the regulating blades are rotated to extend outward in a state of tending to be parallel to each other. The regulating blades of the louver air valve are driven by the transmission belt, the regulating blades are widely regulated, the direction of the regulating blades can be regulated according to the advancing direction of the train, the air inlet volume can be regulated in the process of driving in two directions, the regulating blades can extend outward, the effect of guiding air is achieved in the process of low-speed driving, and the air extraction volume of the subsequent centrifugal fan is reduced.

The application discloses a train fresh air oxygen supplement system and a control method thereof, and relates to a fresh air system. The train fresh air oxygen supplement system comprises a first air inlet channel and a second air inlet channel. The air inlet of the first air inlet channel is arranged at the head of the train, so that when the train is running, air can directly enter the first air inlet channel from the air inlet. In order to avoid the lack of fresh air when the train is running slowly or is stopped, the application further provides the second air inlet channel, and air enters the second air inlet channel through a fan. Therefore, when the first air inlet channel can meet the demand of the train, the fan of the second air inlet channel does not need to be started, energy is saved, and the use cost is reduced. When the first air inlet channel cannot meet the demand of the train, the fan of the second air inlet channel is started, so that the amount of fresh air can meet the use demand. Meanwhile, the oxygen concentration of outdoor air is increased through a membrane separator assembly, and then the outdoor air is mixed with the outdoor air, so that the required oxygen concentration is achieved.

The train type dust falling device comprises a front section train and a rear section train which are arranged on a track of a return airway and connected in series, a horizontal cyclone water film dust remover and an electrostatic dust remover are sequentially arranged on the front section train from front to back, and an air inlet in the front end of the horizontal cyclone water film dust remover is connected with a dust collection pipeline system. A floating dust suction hood, a transfer point dust suction hood and a plurality of working face dust suction hoods are arranged on the dust suction pipeline system, and an electrostatic generator and a counter-rotating axial flow fan are arranged on the rear section of train side by side in the left-right direction. The device can move along with the movement of the coal face, keeps a good dust collection state, and greatly improves the dust collection effect and greatly improves the air environment of the coal face of an underground coal mine in a wet dust collection and electrostatic dust collection combined mode on the premise of ensuring gas safety.

The invention discloses a fireproof partition system, method and device of a rail vehicle energy storage system and a medium, relates to the technical field of rail traffic, and provides the fireproof partition system of the rail vehicle energy storage system in order to solve the problem that an effective fireproof scheme is lacked in a space-first application scene of the rail vehicle energy storage system at present. Fireproof protection of the energy storage system is achieved through the air door arranged at the ventilation and heat dissipation air opening of the energy storage system, and the air door and the energy storage system hardly occupy extra space. And closing control over the air door is fused with an original fault processing mechanism of the train, additional control module arrangement is omitted, and occupied space is further reduced. Therefore, the system provides an effective protection scheme for the fire prevention problem of the rail vehicle energy storage system in a scene with extremely limited space. The energy storage system can be additionally arranged on the railway vehicle on the premise that the requirement of the railway traffic for the fireproof safety level is guaranteed.

This invention relates to the field of vehicle air conditioning control technology, providing a control circuit, method, and rail vehicle for an air conditioning system. The control circuit includes a power supply, an air conditioning controller, and a ventilation switching relay, with the power supply and air conditioning controller forming a first circuit. It also includes a first time relay and a second time relay, with the power supply, ventilation switching relay, first time relay, and second time relay forming a second circuit. The first and second time relays are respectively used to start timing when the air conditioning controller is powered on. If the air conditioning controller fails to start after power-on, and the second time relay has timed for a second duration, the second time relay controls the first circuit to disconnect. After the first time relay has timed for a third duration, the first time relay controls the second time relay to de-energize, thereby reconnecting the first circuit. This invention achieves automatic hard-wired restart in the event of an air conditioning controller failure to start after power-on.

The utility model relates to the technical fields of rail transit especially, a kind of high-speed rail vehicle porous corrugated modeling composite middle roof;Including surface panel, intermediate layer core material, backboard, the surface panel, the intermediate layer core material, the backboard are formed composite middle roof by composite glue composite;The surface panel is porous aluminum plate structure, is provided with corrugated modeling 1-1, the composite filling area is set in the intermediate layer between the parallel surface area of the surface panel and the backboard, and several groups of the intermediate layer core material are set in the composite filling area, and the area outside the composite filling area on the surface panel is provided with decorative hole and can penetrate the structure of the composite middle roof, meet the original decoration and the function premise of convenient inspection door under, further improve sound insulation and thermal insulation performance, while having better stiffness, can reduce the effect of the component vibration when train operation.

The invention provides an urban rail train air conditioner dual-redundancy variable-frequency power source control method and system, and relates to the technical field of emergency protection circuit devices.The method comprises the steps that multi-compartment cooperative control optimization solution is carried out with train exterior environment time sequence data as dynamic boundary conditions, and K refrigeration distribution time sequence baselines are generated; in the differential refrigeration executing process, time sequence state tracking is carried out, and K in-vehicle environment dynamic parameter streams and K multi-mode power state data are obtained; performing power supply health trend analysis, and outputting K power redundancy margin predicted values; demand deviation identification is carried out, and K refrigeration power dynamic compensation amounts are output; and executing two-dimensional toughness control of the K dual-redundancy variable-frequency power supplies through a distributed consensus negotiation algorithm. The technical problems that in the prior art, urban rail train air conditioner power supply control usually adopts load distribution based on preset rules, dynamic change factors of carriages cannot be responded in real time, and the overall energy efficiency of an air conditioner system is affected are solved.

In order to solve the problem that an existing air conditioner cabinet does not have enough installation space for arranging a control panel for achieving the manual refrigeration function of an air conditioner, the utility model provides the external control box of the air conditioner cabinet of the motor train unit. The external control box of the air conditioner cabinet of the motor train unit is installed above a luggage rack of a passenger cabin of the motor train unit, and comprises a sliding rail installed on a camber beam of a train body; one part of the fixing support penetrates through a notch of a side top plate of a passenger cabin of the motor train unit and then is fixed to the sliding rail; the air conditioner control panel is fixed on the fixed bracket; the control box body is connected with the fixing support, the air conditioner control panel and the fixing support are wrapped by the control box body, and the control box body is tightly attached to a side top plate of a passenger cabin of the motor train unit.

The invention relates to the technical field of motor train unit ventilation heaters, in particular to an efficient heat dissipation multifunctional motor train unit ventilation heater which comprises a mounting shell, two guide air ducts, an air filter cartridge, a self-cleaning filter part, a ventilation heating part, a flow guide exhaust part and an air return part. The two guide air ducts are symmetrically arranged on the outer side of the mounting shell in parallel, the air filter cartridge is arranged in the middle of the inner side of the mounting shell, the self-cleaning filter part is arranged in the middle of the inner side of the mounting shell, and the self-cleaning filter part is used for filtering ventilation air and scraping and cleaning the air filter cartridge at the same time; according to the motor train unit ventilation heater, the structural design is optimized, the functions of self-cleaning filtering, efficient heating, airflow guiding and discharging and the like are integrated, and efficient heat dissipation, low maintenance cost and energy-saving and environment-friendly operation of the motor train unit ventilation heater are achieved.

The utility model discloses a heat guarantee device, electric energy equipment and a vehicle, and relates to the technical field of rail transit air conditioners, a liquid cooling branch of the heat guarantee device comprises a water return sub-branch, a water outlet sub-branch, a second heating branch and one or more first heating branches, and the second heating branch and the one or more first heating branches are arranged in parallel; each first heating branch is provided with a first heater; the second heating branch is provided with a second heater and a flow adjusting part; wherein the heating power of the first heater is Q1, and Q1 is a non-negative number; the heating power of the second heater is Q2, and Q2 is a non-negative number; the number of the first heating branches is N, and N is a natural number greater than 0; the heating power of the heat guarantee device can be adjusted in a stepless mode in the range of {kQ2 + NQ1k belongs to [0, 1]}, and k is the adjusting range of the flow adjusting piece. According to the heat guarantee device, stepless adjustment of the heating power is achieved, the problem that in the prior art, the temperature of cooling liquid is difficult to flexibly adjust through a single high-power electric heater is effectively solved, and therefore the stability and adaptability of temperature control are improved.

The utility model relates to the technical field of rail ventilation, and discloses a ventilation device for rail transit, which comprises a ventilation box, a fixing plate is fixedly connected to the front side of the inside of the ventilation box, and bolts are in threaded connection to four corners of the front side of the ventilation box. The rear sides of the multiple bolts all penetrate through the front side of the ventilation box and are in threaded connection with the front side of a fixing plate, an air inlet is formed in the front side of the fixing plate, a draught fan is fixedly connected into the air inlet, an air outlet is formed in the rear side of the interior of the ventilation box, and a hinge is fixedly connected to the top end of the rear side of the interior of the ventilation box. In the utility model, during normal ventilation, airflow inflows to push the valve open, so that the air flows smoothly, the ventilation is stopped or the airflow flows reversely, the inlet pressure is reduced, the gravity shut-off valve is automatically closed by virtue of the hinge under the action of self gravity, the air backflow is prevented, and the one-way ventilation function is realized, so that various weather conditions can be met, and the one-way ventilation device can be suitable for various vehicle types.

To provide a railway vehicle capable of reducing noise of an air-conditioning ventilator propagated through a duct and discharged into the vehicle without narrowing a flow passage cross-sectional area or providing a complicated structure.SOLUTION: In a railway vehicle including a vehicle body, an air-conditioning ventilation device provided in the vehicle body, a duct connecting the vehicle body and the air-conditioning ventilation device, and a noise reduction structure, the noise reduction structure is disposed outside a flow path of air flowing from the inside of the vehicle to the air-conditioning ventilation device in the duct, and is excited at a predetermined frequency corresponding to a sound generated by the air-conditioning ventilation device.SELECTED DRAWING: Figure 4

The utility model relates to a horizontal compressor shock absorber installation structure and a railway vehicle air conditioning unit, which comprise a shock absorber, an installation rib, a bolt and a flange nut, the shock absorber is sleeved on the bolt, the installation rib is welded on a chassis and an installation beam of the air conditioning unit, a bolt hole is arranged on the installation rib, and the flange nut is sleeved on the bolt. The flange nuts are welded to the lower surfaces of the installation ribs, and the bolts penetrate through the shock absorber and the bolt holes from top to bottom to be in threaded connection with the flange nuts. According to the utility model, the operation of replacing the shock absorber of the compressor is simple and convenient, the maintainability is improved, and under the condition that a refrigerating system is not damaged, the quick replacement of the shock absorber of the compressor is realized, the waste of a refrigerant is reduced, the maintenance workload is also reduced, the maintenance efficiency is improved, and the maintenance cost is reduced.

The invention provides a smoke and fire alarm system for a railway vehicle, a plurality of side plates extending in the height direction are mounted on the side wall of the railway vehicle, the plurality of side plates are connected in sequence, and an air return duct is defined by the side plates and the side wall; the alarm system comprises an alarm which is installed on the upper side of an air outlet of an air return duct adjacent to an air return opening of the air conditioning unit in the longitudinal direction and is suitable for triggering the alarm to give out a smoke and fire alarm under the condition that smoke dust is mixed in airflow flowing to the alarm; the filtering part is mounted near the air outlet of the air return duct and is suitable for filtering dust mixed in airflow flowing through the air return duct so as to reduce the amount of dust attached to the surface of the alarm; and the air speed adjusting part is installed in the air return duct and located on the lower side of the filtering part, and the air speed adjusting part is constructed to adjust the flow speed of airflow flowing to one side of the filtering part in the air return duct so as to be matched with the flow speed of the airflow needed for triggering the alarm.

It is proposed a railway vehicle, comprising - an electric traction motor, - a gearbox, configured to transmit a traction torque from the electric traction motor to a drive wheel of the railway vehicle, - a first heat exchanger, arranged in and / or on the gearbox and / or connected to a gearbox oil circuit, wherein the first heat exchanger is configured to transmit waste heat of the gearbox to a fluid stream, - a second heat exchanger, configured to transmit heat from the fluid stream to a passenger compartment and / or driver compartment of the railway vehicle, - a circulation duct system, configured to circulate the fluid stream between the first heat exchanger and the second heat exchanger. Furthermore, a production method and a use of the railway vehicle according to the invention are proposed.

To provide an air conditioning method for a vehicle, which is able to efficiently reduce carbon dioxide from air in a vehicle cabin containing not only carbon dioxide but also H20 at high concentrations, by using a gas separation film, and to provide a system therefor.SOLUTION: An air conditioning system 1 for a vehicle, according to the present invention, comprises: a film module 5 that has a gas separation film having a CO2 / N2 selectivity greater than 1, wherein air in a vehicle cabin is supplied to the gas separation film as a supply gas, and a gas passed through the gas separation film is discharged by a sweep gas; and a dehumidifier 3 that performs one or both of dehumidification of the supply gas and humidification of the sweep gas so that a partial pressure difference between a partial pressure of H2O of the supply gas and a partial pressure of H2O of the sweep gas is smaller than a partial pressure difference between a partial pressure of CO2 of the supply gas and a partial pressure of CO2 of the sweep gas.SELECTED DRAWING: Figure 1