Intelligent fresh air control system and method for railway vehicle

Abstract

The invention relates to the technical field of railway vehicle fresh air systems, in particular to a railway vehicle intelligent fresh air control system and method.The system comprises a controller, a collecting mechanism and a temperature adjusting mechanism; the temperature adjusting mechanism comprises a semiconductor refrigeration module, a condenser fan unit and an electric valve group, the semiconductor refrigeration module is connected to the condenser fan unit, and the electric valve group is connected to the condenser fan unit; the semiconductor refrigeration module is installed on a top cover of an equipment cabin of a machine room, and the condenser fan unit, the electrically operated valve group, the acquisition mechanism and the controller are installed in the equipment cabin of the machine room. And the controller is in control connection with the condenser fan unit, the electric valve group, the acquisition mechanism and the semiconductor refrigeration module. The technical problems that an existing locomotive vehicle mechanical room equipment compartment is limited by the narrow space, the difficulty of installing a large heat dissipation device is large, and the ventilation and heat dissipation effect is affected are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle fresh air system technology, in particular to a rail vehicle intelligent fresh air control system and method. BACKGROUND

[0002] Due to the compact internal structure and complex layout of the mechanical compartment of a locomotive vehicle, traditional air conditioning cooling equipment cannot be installed, which brings significant challenges to the thermal management of the mechanical compartment in high-temperature or low-temperature environments. Due to the narrow space in the mechanical compartment, it is difficult to install large heat dissipation devices, and the existing ventilation and heat dissipation design often cannot meet the heat dissipation requirements under extreme working conditions, resulting in low heat dissipation efficiency. In a continuous high-temperature environment, electrical equipment, power devices, etc. in the mechanical compartment are prone to overheating for a long time, which seriously affects the stability and reliability of their work; and in severe cold conditions, the temperature may be too low to affect the start and normal operation of the equipment. Long-term overheating operation can accelerate the aging of equipment components, reduce insulation performance, and even cause malfunctions, thereby significantly shortening the service life of the equipment and increasing maintenance costs and operational risks. Therefore, how to achieve effective thermal management in a limited space has become a key problem for improving the safety and durability of locomotive vehicles. SUMMARY

[0003] The main purpose of the present application is to provide a rail vehicle intelligent fresh air control system and method, which aims to solve the technical problem that the existing mechanical compartment of a locomotive vehicle is limited by the narrow space, it is difficult to install large heat dissipation devices, and the ventilation and heat dissipation effect is affected.

[0004] To achieve the above-mentioned purpose, the present application provides a rail vehicle intelligent fresh air control system, which comprises a controller, an acquisition mechanism and a temperature adjusting mechanism; the temperature adjusting mechanism comprises a semiconductor refrigeration module, a condenser fan unit and an electric valve group, the semiconductor refrigeration module is connected to the condenser fan unit, and the electric valve group is connected to the condenser fan unit; the semiconductor refrigeration module is installed on the top cover of the mechanical compartment, and the condenser fan unit, the electric valve group, the acquisition mechanism and the controller are installed in the mechanical compartment; the controller controls the connection of the condenser fan unit, the electric valve group, the acquisition mechanism and the semiconductor refrigeration module.

[0005] The rail vehicle intelligent fresh air control system of the present application is further improved in that the semiconductor refrigeration module comprises a hot surface water cooling plate, a semiconductor refrigeration sheet, a cold surface water cooling plate, a water inlet and a water outlet, the semiconductor refrigeration sheet is installed between the hot surface water cooling plate and the cold surface water cooling plate, the water inlet is connected to the hot surface water cooling plate, the water outlet is connected to the cold surface water cooling plate, and the water inlet and the water outlet are both connected to the condenser fan unit.

[0006] The track vehicle intelligent fresh air control system of the application is further improved in that the semiconductor refrigeration module further comprises an upper anti-extrusion fiberboard and a lower anti-extrusion fiberboard, the upper anti-extrusion fiberboard is installed between the hot surface water-cooled plate and the semiconductor refrigeration sheet, and the lower anti-extrusion fiberboard is installed between the cold surface water-cooled plate and the semiconductor refrigeration sheet.

[0007] The track vehicle intelligent fresh air control system of the application is further improved in that the water inlet and the water outlet are respectively connected with an electronic water pump, and the controller controls the electronic water pump.

[0008] The track vehicle intelligent fresh air control system of the application is further improved in that the temperature adjusting mechanism further comprises an angle adjusting driving member for adjusting the angle of the louver air inlet, and the angle adjusting driving member is connected to the controller.

[0009] The track vehicle intelligent fresh air control system of the application is further improved in that the collecting mechanism comprises a temperature collecting assembly, a humidity collecting assembly, a wind speed collecting assembly, a pressure collecting assembly and an automatic identification assembly connected to the controller, the temperature collecting assembly is used to collect the temperature in the mechanical equipment cabin, the humidity collecting assembly is used to collect the air humidity in the mechanical equipment cabin and the air humidity outside the vehicle, the wind speed collecting assembly is used to collect the air supply wind speed of the condenser fan unit, the pressure collecting assembly is used to collect the pressure in the mechanical equipment cabin, and the automatic identification assembly is used to collect the position of the maintenance worker.

[0010] The track vehicle intelligent fresh air control system of the application is further improved in that the controller comprises a PLC logic control unit, a control power supply and a display screen, the PLC logic control unit is connected to the control power supply and the display screen, and the PLC logic control unit controls the collecting mechanism and the temperature adjusting mechanism.

[0011] The track vehicle intelligent fresh air control system of the application is further improved in that the control power supply is provided with a power supply switching switch and a manual or automatic switching switch, the power supply switching switch is used to selectively switch the power supply inside the vehicle or the power supply outside the vehicle, and the manual or automatic switching switch is used to manually or automatically connect the PLC logic control unit.

[0012] The track vehicle intelligent fresh air control system of the application is further improved in that a load power output control relay is arranged between the PLC logic control unit and the temperature adjusting mechanism.

[0013] In addition, the application also provides a track vehicle intelligent fresh air control method, comprising the following steps: providing the track vehicle intelligent fresh air control system as described above; Collecting temperature in the mechanical equipment cabin through the temperature collection component, collecting pressure in the mechanical equipment cabin through the pressure collection component, and transmitting signals to the PLC logic control unit; when the temperature is higher than 36 DEG C and the pressure in the mechanical equipment cabin is less than 90 Pa, the semiconductor refrigeration module and the condenser fan unit are started to carry out refrigeration cooling, and air is sent into the mechanical equipment cabin through the condenser fan unit; When the temperature is lower than 26 DEG C, the semiconductor refrigeration module is turned off, and the air in the mechanical equipment cabin is made to flow through the condenser fan unit; When the pressure in the mechanical equipment cabin is greater than 250 Pa, the condenser fan unit is controlled to work to exhaust air outside the vehicle through the controller, and after the pressure in the mechanical equipment cabin is less than 90 Pa, the air flow state is automatically switched, and the semiconductor refrigeration module and the condenser fan unit are automatically restored to carry out refrigeration cooling; When the humidity outside the vehicle is greater than 90%, the condenser fan unit stops sending air into the mechanical equipment cabin; The position of the maintenance worker is collected through the automatic identification component, the air outlet of the condenser fan unit and the ventilator is controlled to face the maintenance worker, and cooling is carried out.

[0014] The technical scheme of the present application has the following beneficial effects: The rail vehicle intelligent fresh air control system of the present application uses the heating and refrigeration principle of the semiconductor refrigeration sheet, is installed on the top cover, and uses the large size and relatively flat characteristics of the top cover of the locomotive vehicle to provide the heat dissipation cooling condition for the water cooling plate of the semiconductor refrigeration sheet, so as to carry out the whole vehicle system heat management distribution, achieve uniform distribution and regulation and control of the whole vehicle heat management, and when the locomotive is running, it is a natural radiator. Through the hot and cold alternation of the water cooling plate and the condenser, the environment temperature of the mechanical equipment cabin is improved, and the technical problems that the existing mechanical equipment cabin of the locomotive vehicle is limited by narrow space, it is difficult to install large heat dissipation devices, and the ventilation and heat dissipation effect is affected are solved. The present application carries out state perception and system working state monitoring in the equipment cabin through the collection mechanism, carries out cold and hot alternation through the semiconductor refrigeration sheet, realizes the water circulation alternation of the water cooling plate, the condenser and the electronic water pump, so that the temperature generated on the condenser is sent into the mechanical equipment cabin through the fan and the pipeline. In summer, the mechanical equipment cabin can be cooled, and in winter, the mechanical equipment cabin can be heated. The service life of the electrical devices in the mechanical equipment cabin is effectively improved, the internal environment temperature of the mechanical equipment cabin is improved, and the equipment cabin is in a comfortable temperature environment. When the locomotive is returned to the depot for maintenance, the locomotive can be powered by an external power supply without power supply, and the mechanical equipment cabin can be provided with circulating cool air or hot air to provide a more comfortable maintenance environment for the equipment cabin. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without any creative effort.

[0016] Figure 1 The structural framework diagram of the intelligent fresh air control system of the rail vehicle of the present application; Figure 2 The control principle diagram of the intelligent fresh air control system of the rail vehicle of the present application; Figure 3 The sectional view of the semiconductor refrigeration module of the intelligent fresh air control system of the rail vehicle of the present application; Figure 4 The perspective view of the semiconductor refrigeration module of the intelligent fresh air control system of the rail vehicle of the present application.

[0017] Explanation of the reference numerals: 1, in-vehicle power supply; 2, out-vehicle power supply; 3, power supply switch; 4, control power supply; 5, manual or automatic switch; 6, display screen; 7, PLC logic control unit; 8 and 9, first direct current solid-state control relay; 10 and 11, second direct current solid-state control relay; 12 and 13, third direct current solid-state control relay; 14, first electric valve; 15, second electric valve; 16, first condenser fan unit; 17, second condenser fan unit; 18, first semiconductor refrigeration module; 19, first electronic water pump; 20, second semiconductor refrigeration module; 21, second electronic water pump; 22, first angle adjustment driving member; 23, second angle adjustment driving member; 24, first temperature sensor; 25, second temperature sensor; 26, third temperature sensor; 27, fourth temperature sensor; 28, fifth temperature sensor; 29, sixth temperature sensor; 30, seventh temperature sensor; 31, eighth temperature sensor; 32, first temperature and humidity sensor; 33, second temperature and humidity sensor; 34, first wind speed sensor; 35, second wind speed sensor; 36, differential pressure sensor; 37, first laser sensor; 38, second laser sensor; 39, upper anti-extrusion fiberboard; 40, hot surface water cooling plate; 41, semiconductor refrigeration sheet; 42, cold surface water cooling plate; 43, lower anti-extrusion fiberboard; 44, water inlet; 45, water outlet. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of the present application.

[0019] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0020] In addition, the descriptions such as “first”, “second” and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with “first”, “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “plurality” is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0021] In the present application, unless otherwise specifically defined and limited, the terms “connection”, “fixing” and the like should be understood in a broad sense, for example, “fixing” can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0023] For example, the technical solutions of the first embodiment of the present application can be combined with the technical solutions of the second embodiment of the present application, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application. Figures 1-4As shown, the application proposes a track vehicle intelligent fresh air control system, comprising a controller, an acquisition mechanism and a temperature adjusting mechanism; the temperature adjusting mechanism comprises a semiconductor refrigeration module, a condenser fan unit and an electric valve group, the semiconductor refrigeration module is connected to the condenser fan unit, and the electric valve group is connected to the condenser fan unit; the semiconductor refrigeration module is installed on the mechanical compartment roof, and the condenser fan unit, the electric valve group, the acquisition mechanism and the controller are installed in the mechanical compartment; the controller controls the condenser fan unit, the electric valve group, the acquisition mechanism and the semiconductor refrigeration module.

[0024] In this embodiment, the number of condenser fan units is two, which are a first condenser fan unit 16 and a second condenser fan unit 17. The condenser fan unit is composed of a cooling fin, a water-cooled copper pipe and a fan, wherein when hot water flows through the condenser fan unit, the fan blows hot air to the air outlet for heating in a low-temperature environment; and when cold water flows through the condenser fan unit, the fan blows cold air to the air outlet for refrigeration in a high-temperature environment. The electric valve group comprises a first electric valve 14 and a second electric valve 15, which can change the flow direction of the cooling liquid flowing to the first condenser fan unit 16 and the second condenser fan unit 17 through the first electric valve 14 and the second electric valve 15 according to the need of the working condition temperature, so as to realize the refrigeration and heating functions in low-temperature and high-temperature environments.

[0025] Preferably, as Figure 3 and Figure 4As shown, the semiconductor refrigeration module includes a hot-face water-cooled plate 40, a semiconductor refrigeration sheet 41, a cold-face water-cooled plate 42, a water inlet 44, and a water outlet 45. The semiconductor refrigeration sheet 41 is installed between the hot-face water-cooled plate 40 and the cold-face water-cooled plate 42. The water inlet 44 is connected to the hot-face water-cooled plate 40, and the water outlet 45 is connected to the cold-face water-cooled plate 42. Both the water inlet 44 and the water outlet 45 are connected to the condenser fan unit. In this embodiment, the number of semiconductor refrigeration modules is two, which are a first semiconductor refrigeration module 18 and a second semiconductor refrigeration module 20. In this embodiment, the semiconductor refrigeration sheet 41 has an outer size of 60 mm in length, 60 mm in width, and 5 mm in thickness, and has a small outer volume. The number of semiconductor refrigeration sheets 41 is multiple, and the multiple semiconductor refrigeration sheets 41 are installed at intervals. The single working voltage of the semiconductor refrigeration sheet 41 is DC 18V-DC 26V, and the single power is 240W. The power and voltage of the semiconductor refrigeration sheet 41 can be increased by a series connection. In this embodiment, six semiconductor refrigeration sheets 41 are installed in each semiconductor refrigeration module. The refrigeration and heating of each set of unit are composed of two first semiconductor refrigeration modules 18 and two second semiconductor refrigeration modules 20. After the twelve semiconductor refrigeration sheets 41 are connected in series in each semiconductor refrigeration module, the series working voltage is DC 216V-DC 288V. The rated working voltage AC 220V of the locomotive is converted to DC 220V to supply power to the semiconductor refrigeration module, thereby solving the power supply problem of the intelligent fresh air control system on the locomotive.

[0026] Preferably, the semiconductor refrigeration module further includes an upper anti-extrusion fiber plate 39 and a lower anti-extrusion fiber plate 43. The upper anti-extrusion fiber plate 39 is installed between the hot-face water-cooled plate 40 and the semiconductor refrigeration sheet 41. The lower anti-extrusion fiber plate 43 is installed between the cold-face water-cooled plate 42 and the semiconductor refrigeration sheet 41. The upper anti-extrusion fiber plate 39 and the lower anti-extrusion fiber plate 43 can prevent the semiconductor refrigeration sheet 41 from being damaged, thereby improving the service life of the semiconductor refrigeration module.

[0027] Preferably, the water inlet 44 and the water outlet 45 are respectively connected with electronic water pumps, and the controller is connected with the electronic water pumps. The number of the electronic water pumps is two, which are respectively a first electronic water pump 19 and a second electronic water pump 21. When the semiconductor refrigeration module is powered on, one side is a refrigeration side and the other side is a heating side. A hot surface water cooling plate 40 and a cold surface water cooling plate 42 are respectively installed on the heating side and the refrigeration side. The liquid flowing through the water cooling plate is driven by the first electronic water pump 19 and the second electronic water pump 21 to take away heat and cold air. The refrigeration and heating power of a single set reaches about 2880W. Two sets of semiconductor refrigeration modules are distributed in the mechanical compartment equipment cabin top cover area. After installation and fixation, the water cooling plate heating surface is cooled through the locomotive top cover, so that the cooling liquid in the water cooling plate on the refrigeration side of the semiconductor refrigeration sheet 41 flows into the first condenser fan unit 16 and the second condenser fan unit 17, and then the first electronic water pump 19 and the second electronic water pump 21 circulate the cooling liquid to form a cooling liquid circulation system composed of two sets of first semiconductor refrigeration modules 18 and two sets of second semiconductor refrigeration modules 20.

[0028] Preferably, the temperature adjusting mechanism further comprises an angle adjusting drive connected with the controller for adjusting the angle of the louvered inlet. In the embodiment, the angle adjusting drive is an electric motor. The number of the angle adjusting drives is two, which are respectively a first angle adjusting drive 22 and a second angle adjusting drive 23.

[0029] Preferably, the collecting mechanism comprises a temperature collecting component, a humidity collecting component, a wind speed collecting component, a pressure collecting component and an automatic identification component connected with the controller. The temperature collecting component is used for collecting the temperature in the mechanical compartment equipment cabin. The humidity collecting component is used for collecting the air humidity in the mechanical compartment equipment cabin and the air humidity outside the vehicle. The wind speed collecting component is used for collecting the air supply wind speed of the condenser fan unit. The pressure collecting component is used for collecting the pressure in the mechanical compartment equipment cabin. The automatic identification component is used for collecting the position of the maintenance personnel.

[0030] In the embodiment, the temperature collecting component comprises a first temperature sensor 24, a second temperature sensor 25, a third temperature sensor 26, a fourth temperature sensor 27, a fifth temperature sensor 28, a sixth temperature sensor 29, a seventh temperature sensor 30 and an eighth temperature sensor 31. The humidity collecting component comprises a first temperature and humidity sensor 32 and a second temperature and humidity sensor 33. The wind speed collecting component comprises a first wind speed sensor 34 and a second wind speed sensor 35. The pressure collecting component is a differential pressure sensor 36. The automatic identification component comprises a first laser sensor 37 and a second laser sensor 38, which are used for accurately cooling the maintenance personnel in the mechanical compartment equipment cabin during the locomotive vehicle return inspection in a high temperature environment.

[0031] Preferably, the controller comprises a PLC logic control unit 7 connected to the control power supply 4 and the display screen 6, the PLC logic control unit 7 controls the connection to the acquisition mechanism and the temperature adjusting mechanism. The PLC logic control unit 7 uses 485 communication / CAN communication port to connect all sensors for simultaneous acquisition of working condition data. The control power supply 4 provides DC 24V control power supply 4 for each component, after all sensors receive DC 24V control power supply 4, they automatically perform sampling detection and transmit each group of data to the PLC logic control unit 7. The PLC logic control unit 7 connects all sensors through 485 communication / CAN communication port for working condition data acquisition. Connecting each sensor through communication mode can reduce the wiring between all sensors and the PLC logic control unit 7 and equipment installation wiring, and improve the anti-interference performance of the components; the centralized communication connection in the control system facilitates centralized control and fault diagnosis of the system. The PLC logic control unit 7 realizes multi-channel semiconductor refrigeration module control through software control program, then realizes communication with the PLC logic control unit 7 control program through the host computer control program on the display screen 6, and realizes temperature display, temperature monitoring, fault diagnosis, temperature setting and debugging setting, data storage function through the display screen 6, which can be checked at any time. Through checking the working condition data, the temperature, humidity, pressure, laser sensing wavelength and other parameters that meet the working condition requirements can be accurately set. This is the prior art, which will not be described here.

[0032] Preferably, the control power supply 4 is provided with a power switch 3 for selectively switching the in-vehicle power supply 1 or the off-vehicle power supply 2, and a manual or automatic switch 5 for manually or automatically connecting the PLC logic control unit 7. The power supply uses the in-vehicle power supply 1 or the off-vehicle power supply 2 of the locomotive vehicle, and the supply voltage is the input voltage of AC 220V or AC 380V of the locomotive or ground standard, to provide working power for the system.

[0033] Preferably, the PLC logic control unit 7 is provided with a load power output control relay for the temperature adjusting mechanism. The relay is used to connect the load end output. The relay includes two first DC solid-state control relays 8 and 9, two second DC solid-state control relays 10 and 11, and two third DC solid-state control relays 12 and 13, or AC solid-state relays can also be selected according to actual needs, mainly for load power output control. The load components include first electric valve, second electric valve, first condenser fan unit 16, second condenser fan unit 17, first semiconductor refrigeration module 18, second semiconductor refrigeration module 20, first electronic water pump 19, second electronic water pump 21 and other module component load power supply and control power supply 4 are isolated and separated for power supply. The power supply realizes strong and weak current isolation power supply, so as to solve the control interference problem. When the controller overall system fails, it can be converted to manual operation mode by manual or automatic switching switch 5; under the working condition of the intelligent controller overall system, the automatic mode is mainly used.

[0034] In addition, the application also provides a rail vehicle intelligent fresh air control method, comprising the following steps: Providing a rail vehicle intelligent fresh air control system as described above; Collecting the temperature in the mechanical equipment cabin by the temperature collection assembly, collecting the pressure in the mechanical equipment cabin by the pressure collection assembly, and transmitting the signals to the PLC logic control unit 7; when the temperature is higher than 36℃ (the average temperature of all temperature sensors) and the pressure in the mechanical equipment cabin is less than 90Pa, the semiconductor refrigeration module and the condenser fan unit are started to cool, and the condenser fan unit is used to send air to the mechanical equipment cabin; When the temperature is lower than 26℃, the semiconductor refrigeration module is turned off, and the condenser fan unit is used to make the air in the mechanical equipment cabin convect; specifically, the first condenser fan unit 16 is started to send fresh air into the mechanical equipment cabin, and the second condenser fan unit 17 is used to exhaust air outside the locomotive, so as to make the air in the mechanical equipment cabin convect; When the pressure in the mechanical equipment cabin is greater than 250Pa, the condenser fan unit is controlled by the controller to exhaust air outside the vehicle, and when the pressure in the mechanical equipment cabin is less than 90Pa, the air convecting state is automatically switched, and the semiconductor refrigeration module and the condenser fan unit are automatically restored to cool; The humidity acquisition assembly is used to acquire the air humidity in the mechanical equipment cabin and the air humidity outside the vehicle. When the humidity outside the vehicle is greater than 90%, the condenser fan unit stops sending air into the mechanical equipment cabin. The first temperature and humidity sensor 32 and the second temperature and humidity sensor 33 are mainly used to detect the air humidity in the mechanical equipment cabin sent by the first condenser fan unit 16 and the second condenser fan unit 17 from outside the vehicle and the internal air humidity when the air in the mechanical equipment cabin is exhausted.

[0035] The automatic identification assembly is used to acquire the position of the maintenance worker, control the air outlet direction of the condenser fan unit and the ventilator towards the maintenance worker, and perform cooling. Specifically, the first laser sensor 37 and the laser sensor are used to check whether there is a worker on the passageway of the mechanical equipment cabin of the locomotive to perform inspection work. When a worker is detected to perform work, the angle adjusting drive automatically adjusts the angle of the louver to send air from outside the vehicle, and automatically adjusts the air outlet direction of the first condenser fan unit 16 and the second condenser fan unit 17 to align with the worker to perform cooling. With the movement of the worker's inspection position, the angle of the louver to send air from outside the vehicle can be adjusted to follow the position of the worker, so that the air outlet direction is always aligned with the worker. When no worker enters the mechanical equipment cabin, the first laser sensor 37 and the second laser sensor 38 detect the position of the worker, and the angle adjusting drive controls the louver to send cold air at a fixed full opening angle to cool the cabin, thereby providing the worker with cabin cooling before entering the mechanical equipment cabin to perform inspection work.

[0036] The above only describes the preferred embodiments of the present application, and does not limit the scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or direct / indirect application in other related technical fields within the inventive concept of the present application and the content of the specification and drawings are included in the protection scope of the present application.

Claims

1. A rail vehicle intelligent fresh air control system, characterized in that, The temperature adjusting mechanism comprises a semiconductor refrigeration module, a condenser fan unit and an electric valve group, the semiconductor refrigeration module is connected to the condenser fan unit, and the electric valve group is connected to the condenser fan unit.

2. The rail vehicle intelligent fresh air control system of claim 1, wherein, The semiconductor refrigeration module comprises a hot surface water cooling plate (40), a semiconductor refrigeration sheet (41), a cold surface water cooling plate (42), a water inlet (44) and a water outlet (45), the semiconductor refrigeration sheet (41) is installed between the hot surface water cooling plate (40) and the cold surface water cooling plate (42), the water inlet (44) is connected to the hot surface water cooling plate (40), the water outlet (45) is connected to the cold surface water cooling plate (42), and the water inlet (44) and the water outlet (45) are both connected to the condenser fan unit.

3. The rail vehicle intelligent fresh air control system of claim 2, wherein, The semiconductor refrigeration module further comprises an upper anti-extrusion fiber plate (39) and a lower anti-extrusion fiber plate (43), the upper anti-extrusion fiber plate (39) is installed between the hot surface water cooling plate (40) and the semiconductor refrigeration sheet (41), and the lower anti-extrusion fiber plate (43) is installed between the cold surface water cooling plate (42) and the semiconductor refrigeration sheet (41).

4. The rail vehicle intelligent fresh air control system of claim 3, wherein, The water inlet (44) and the water outlet (45) are respectively connected with an electronic water pump, and the controller is connected with the electronic water pump.

5. The rail vehicle intelligent fresh air control system of claim 4, wherein, The temperature adjusting mechanism further comprises an angle adjusting drive connected to the controller and used for adjusting the angle of a louver air inlet.

6. The rail vehicle intelligent fresh air control system of claim 5, wherein, The collecting mechanism comprises a temperature collecting assembly, a humidity collecting assembly, a wind speed collecting assembly, a pressure collecting assembly and an automatic identification assembly connected to the controller, the temperature collecting assembly is used for collecting the temperature in the mechanical compartment, the humidity collecting assembly is used for collecting the air humidity in the mechanical compartment and the air humidity outside the vehicle, the wind speed collecting assembly is used for collecting the air supply wind speed of the condenser fan unit, the pressure collecting assembly is used for collecting the pressure in the mechanical compartment, and the automatic identification assembly is used for collecting the position of a maintenance worker.

7. The rail vehicle intelligent fresh air control system of claim 6, wherein, The controller comprises a PLC logic control unit (7), a control power supply (4) and a display screen (6), the PLC logic control unit (7) is connected to the control power supply (4) and the display screen (6), and the PLC logic control unit (7) is connected to the collecting mechanism and the temperature adjusting mechanism.

8. The rail vehicle intelligent fresh air control system of claim 7, wherein, The control power supply (4) is provided with a power switch (3) and a manual or automatic switch (5), the power switch (3) is used for selectively switching an in-vehicle power supply (1) or an external power supply (2), and the manual or automatic switch (5) is used for manually or automatically connecting the PLC logic control unit (7).

9. The rail vehicle intelligent fresh air control system of claim 8, wherein, The PLC logic control unit (7) is provided with a load power output control relay between the temperature adjusting mechanism.

10. A method for intelligent fresh air control of a rail vehicle, characterized in that The method comprises the following steps: The rail vehicle intelligent fresh air control system according to claim 9 is provided; The temperature acquisition component is used to acquire the temperature in the mechanical equipment cabin, the pressure acquisition component is used to acquire the pressure in the mechanical equipment cabin, and signals are transmitted to the PLC logic control unit (7); when the temperature is higher than 36 DEG C and the pressure in the mechanical equipment cabin is less than 90 Pa, the semiconductor refrigeration module and the condenser fan unit are started to perform refrigeration cooling, and the condenser fan unit is used to send air into the mechanical equipment cabin; When the temperature is lower than 26 DEG C, the semiconductor refrigeration module is stopped, and the condenser fan unit is used to make the air in the mechanical equipment cabin convect; When the pressure in the mechanical equipment cabin is greater than 250 Pa, the condenser fan unit is controlled by the controller to exhaust air outside the vehicle, and after the pressure in the mechanical equipment cabin is less than 90 Pa, the air convection state is automatically switched, and the semiconductor refrigeration module and the condenser fan unit are automatically restored to perform refrigeration cooling; When the humidity outside the vehicle is greater than 90%, the condenser fan unit is stopped to send air into the mechanical equipment cabin; The automatic identification component is used to acquire the position of the maintenance worker, the air outlet of the condenser fan unit and the ventilator is controlled to face the maintenance worker, and cooling is performed.

Images