CN212605133U - Air conditioner exhaust system for rail vehicle - Google Patents
Air conditioner exhaust system for rail vehicle Download PDFInfo
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- CN212605133U CN212605133U CN202021583645.XU CN202021583645U CN212605133U CN 212605133 U CN212605133 U CN 212605133U CN 202021583645 U CN202021583645 U CN 202021583645U CN 212605133 U CN212605133 U CN 212605133U
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Abstract
The utility model discloses an air conditioner exhaust system for rail vehicle, include: an air conditioner controller; an exhaust mounted within the rail vehicle; the exhaust device comprises an EC fan, and the air conditioner controller can send a speed regulation control signal to the EC fan to adjust the air volume of the EC fan. The utility model provides an air conditioner exhaust system for rail vehicle, exhaust apparatus adopt the design of EC fan, and air conditioner controller can directly send adjustable direct current drive voltage signal to the EC fan, the EC fan can be according to received target drive voltage signal value, comes the rotational speed of linear adjustment EC fan, and then realizes the full range regulation of the amount of wind, satisfies the demand of air volume adjustable under the complicated operating mode, and normal ventilation and urgent ventilation are all realized by the EC fan through rotational speed control, saves the design of other parts such as air-saving valve, urgent ventilation inverter, saves exhaust apparatus inner space and cost.
Description
Technical Field
The utility model belongs to the technical field of the rail vehicle air conditioner technique and specifically relates to an air conditioner exhaust system for rail vehicle.
Background
In order to ensure the ventilation and sanitary circulation inside a subway carriage, a certain amount of fresh air must enter the inside of the carriage through a fresh air port of a passenger room air conditioner, and a rail vehicle exhaust device exhausts waste gas entering the inside of the carriage out of the train in an equivalent mode through the operation of an exhaust fan inside the device, so that the cleanliness, reasonable flowing speed and reasonable airflow organization of air in the train are ensured.
When a high-speed railway vehicle passes through a tunnel or meets a vehicle at a high speed, pressure fluctuation is inevitably generated, and the pressure wave transmitted into the vehicle has a great influence on the riding comfort of passengers. Because the air port of the exhaust device of the railway vehicle is connected with the outside air, a pressure protection valve can be arranged in the exhaust device, and the influence of air pressure fluctuation on the interior of a carriage is avoided by controlling the opening and closing of the pressure protection valve.
As shown in fig. 1, the power supply of the exhaust fan in the existing exhaust device uses AC380V power supply provided for the train auxiliary inverter, the fan can only maintain fixed rotation speed operation during normal ventilation, in order to meet the matching of the air output of the whole vehicle air duct, an exhaust air valve is required to be separately arranged in the exhaust device, the air output of the whole vehicle is controlled by adjusting the opening angle of the air valve blade, and the air valve control adjustment period is long and the response speed is slow.
In emergency ventilation, because only direct current power supply input can be provided on the train, an emergency ventilation inverter needs to be added in the unit, and the direct current voltage provided by a train power supply system is inverted into the supply of a three-phase alternating current voltage exhaust fan power supply required by an exhaust fan under the condition that the vehicle air conditioner AC380V power supply fails.
Because the capacity of the power supply of the direct-current power supply after inversion by the inverter is limited and can only meet the use requirement of fan loads, contactors K1 and K2 are required to be added for interlocking control. After the alternating current power supply fails, after the inverter works, the K1 contactor is closed, and the K2 contactor is opened, so that the situation that the capacity exceeds the standard due to the fact that the inverted power supply is reversely sent to a bus is avoided. Under the condition that the power supply of the vehicle air conditioner AC380V fails, an emergency ventilation inverter needs to be arranged in a unit to meet the requirement of emergency ventilation, the direct-current power supply voltage provided by a train power supply system is inverted into three-phase alternating-current voltage required by an exhaust fan, the exhaust fan can only operate, and the design of the emergency ventilation inverter occupies space and increases the weight of the whole vehicle.
In addition, at present, the judgment mode for detecting whether the fan operates is that after a starting command is issued, the K1 contactor and the K2 contactor of the main loop are attracted, a power supply is sent to the fan body, and after the air conditioner controller receives a feedback command for correspondingly controlling the attraction of the contactors, the state of the fan is judged to be normal, but the judgment definition cannot be made on whether the fan body actually operates normally.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides the direct current EC fan of the direct power supply of accessible power module and has pressure protection function's air conditioner exhaust system for rail vehicle concurrently.
In order to achieve the object, according to the utility model discloses an aspect, the utility model discloses a following technical scheme:
an air conditioning exhaust system for a rail vehicle, comprising:
an air conditioner controller;
an exhaust mounted within the rail vehicle;
the exhaust device comprises an EC fan, and the air conditioner controller can send a speed regulation control signal to the EC fan to adjust the air volume of the EC fan.
Further, the air conditioner controller is provided with a wind speed adjusting output port, the EC fan is provided with a wind speed adjusting input port which is electrically connected with the wind speed adjusting output port through a signal input line, and the speed adjusting control signal is a driving voltage signal which is sent to the EC fan by the air conditioner controller through the signal input line;
preferably, the driving voltage signal is an adjustable DC driving voltage signal of 0-mV, wherein m is greater than or equal to 3.
Further, the air conditioner controller is also provided with a wind speed regulation feedback receiving port, and the EC fan is provided with a wind speed regulation feedback output port which is electrically connected with the wind speed regulation feedback receiving port through a signal feedback line;
the EC fan comprises a voltage conversion module, and the voltage conversion module can convert the actual rotating speed of the EC fan into a voltage signal and feed the voltage signal back to the air conditioner controller.
The EC fan comprises a power supply input port electrically connected with the power supply module, and the power supply module can provide direct-current power supply for the EC fan through the power supply input port.
Further, still including installing the pressure wave protection device in the exhaust apparatus cavity and installing the inside and outside pressure wave sensor in the carriage, air conditioner controller can control according to the inside and outside pressure wave signal in carriage that pressure wave sensor detected the switching condition of pressure wave protection device.
Further, the pressure wave protection device comprises a first pressure protection valve electrically connected with a first pressure regulation output port of the air conditioner controller and a second pressure protection valve electrically connected with a second pressure regulation output port of the air conditioner controller;
preferably, the first pressure protection valve is internally provided with a first pressure cavity, the first pressure cavity is provided with a first air port, and a first valve plate is arranged on the first air port in an openable and closable manner;
a second pressure cavity is formed in the second pressure protection valve, a second air port is formed in the second pressure cavity, and a second valve plate is arranged on the second air port in an openable and closable manner;
the first air opening is larger than the second air opening, and the area of the first valve plate is larger than that of the second valve plate.
The air flow detection device is arranged in the cavity of the exhaust device and is electrically connected with an air flow detection port of the air conditioner controller;
preferably, the airflow detecting device comprises a wind pressure switch connected between the airflow detecting port of the air conditioner controller and the power supply module, and the wind pressure generated by the gas inside the exhaust device cavity can trigger the on/off of the wind pressure switch.
According to the control method of the air conditioning exhaust system for the railway vehicle, the controller of the EC fan can adjust the air volume of the EC fan according to the received speed regulation control signal sent to the EC fan by the air conditioning controller.
Further, a wind speed adjusting output port of the air conditioner controller inputs target driving voltage signals with different values to the EC fan, and the EC fan linearly adjusts the rotating speed of the EC fan according to the received target driving voltage signal value, so that the control of the air volume is realized;
preferably, the voltage conversion module of the EC fan converts the actual rotation speed of the EC fan into an actual voltage signal and feeds the actual voltage signal back to the air conditioner controller, and the air conditioner controller controls the compensation voltage of the corresponding value to be input to the EC fan according to the difference value between the actual voltage signal and the target driving voltage signal.
Further, the air conditioning controller controls the opening and closing of the pressure wave protection device according to the magnitude of the pressure wave signal in the vehicle cabin detected by the pressure wave sensor;
preferably, the air conditioner controller can realize multi-gear air volume adjusting control of the fresh air volume by controlling the first valve plate and the second valve plate of the pressure wave protection device to perform time-sharing actions.
After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has:
1. the utility model provides an air conditioner exhaust system for rail vehicle, exhaust apparatus adopt the design of EC fan, and air conditioner controller can directly send 0 ~ mV's adjustable direct current drive voltage signal to the EC fan, and wherein, m is greater than or equal to 3, the EC fan can be according to received target drive voltage signal value, comes the rotational speed of linear regulation EC fan, and then realizes the full range regulation of the amount of wind, satisfies the demand of air volume adjustable under the complicated operating mode, and normal ventilation and urgent ventilation are all realized through rotational speed control by the EC fan, save the design of other parts such as air valve, urgent ventilation inverter, save exhaust apparatus inside overall arrangement space and cost.
2. The utility model provides an air conditioner exhaust system for rail vehicle is provided with the voltage conversion module in the EC fan, the voltage conversion module can convert the actual rotational speed of EC fan into actual voltage signal, and pass through signal feedback line feeds back to air conditioner controller, air conditioner controller is according to actual voltage signal and target drive voltage signal's difference, and control has avoided the actual rotational speed of EC fan and has certain difference with predetermined rotational speed effectively to EC fan input corresponding value's offset voltage, and the staff can't discover this drawback, leads to the actual amount of wind of fan can not satisfy actual demand.
3. The utility model provides an air conditioner exhaust system for rail vehicle, the first pressure protection valve of exhaust apparatus internal integration passive form and second pressure protection valve can realize that the pressure oscillation promptly closes the function that hinders air pressure fluctuation and cause the influence in to the carriage, and the accessible is the time-sharing action of the first valve plate and the second valve plate of controlling variation in size respectively again, satisfies the demand of the three air regulation controls that keep off of fresh air amount of wind.
4. The utility model provides an air conditioner exhaust system for rail vehicle, whether normally judge the operating condition of fan through installing the air current detection device who establishes in the exhaust apparatus cavity, EC fan work operation back can produce the air current to trigger air current detection device's wind pressure switch produces closed action, can send the closed signal of connecting contact for air conditioner controller, air conditioner controller can regard air current detection device to start work after receiving this signal, and with this affirm the EC fan normal operating. And if the air conditioner controller does not receive the corresponding feedback closing signal after the air conditioner controller sends the speed regulation control signal but the air pressure switch does not act, the connecting contact is in an open state, and the air conditioner controller does not receive the corresponding feedback closing signal, the possible fault of the EC fan is inferred, and an alarm signal is uploaded.
5. The utility model provides an air conditioner exhaust system for rail vehicle, the inside power module who sets up of exhaust apparatus provides DC power supply to the EC fan, and during normal power supply and the emergency power supply of train, all can maintain the input of providing EC fan DC power supply, when having saved early emergency ventilation power supply, the inside design of establishing the emergency ventilation dc-to-ac converter that needs to add of exhaust apparatus plays and subtracts the weight and saves space's effect.
Drawings
FIG. 1 is a schematic view of a control connection of an exhaust system according to the prior art;
FIG. 2 is a schematic view of the control connection of the exhaust apparatus in the present embodiment;
FIG. 3 is a schematic top view of the first and second valve plates in the present embodiment;
wherein: 1. an air conditioner controller; 2. a power supply module; 3. a signal input line; 4. a signal feedback line; 5. an EC fan; 6. a first pressure protection valve; 61. a first valve plate; 7. a second pressure protection valve; 71. a second valve plate; 8. an airflow detecting device; 9. and an exhaust device.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail with reference to examples.
As shown in fig. 2, the present embodiment provides an air conditioning exhaust system for a rail vehicle, including: an air conditioner controller 1; an exhaust device 9 installed in the rail vehicle; the exhaust device 9 comprises an EC fan 5, and the air conditioner controller 1 can send a speed regulation control signal to the EC fan 5 to adjust the air volume of the EC fan 5. The utility model discloses well exhaust apparatus 9 is through the design that adopts EC fan 5, realizes the full range regulation of the amount of wind, satisfies the demand of air volume adjustable under the complicated operating mode, saves the design work of other parts such as blast gate.
Further, the air conditioner controller 1 has a wind speed adjusting output port, the EC fan 5 has a wind speed adjusting input port electrically connected to the wind speed adjusting output port through a signal input line 3, the speed adjusting control signal is a driving voltage signal sent by the air conditioner controller 1 to the EC fan 5 through the signal input line 3, and the speed adjusting control signal is not limited to a voltage signal and may also be a driving signal such as a current signal.
Preferably, the driving voltage signal is a wide-range adjustable direct current driving voltage signal, the train TCMS network issues a corresponding mode, after the air conditioner controller 1 receives an issued execution instruction, the wind speed adjustment port in its own hardware loop may output a voltage of 0 to mV, where m is greater than or equal to 3, and the voltage is transmitted to the wind speed adjustment input port of the EC fan 5 through the signal input line 3, and after the EC fan 5 receives the driving voltage signal of 0 to mV issued by the air conditioner controller 1, the rotation speed of the EC fan 5 may be correspondingly adjusted, and the higher the voltage signal value is, the faster the rotation speed of the EC fan 5 is correspondingly controlled.
In the air-conditioning exhaust system for the rail vehicle, the exhaust device 9 is designed by the EC fan 5, the air-conditioning controller 1 can directly send a wide-range adjustable driving voltage signal of 0-mV to the EC fan 5, wherein m is greater than or equal to 3, the EC fan 5 can linearly adjust the rotating speed of the EC fan 5 according to the received target driving voltage signal value, so that the full-range adjustment of the air volume is realized, the requirement of adjustable air volume under complex working conditions is met, normal ventilation and emergency ventilation are realized by the EC fan 5 through rotating speed control, the design of other components such as an air valve and an emergency ventilation inverter is saved, and the internal layout space and the cost of the exhaust device 9 are saved.
Further, the air conditioner controller 1 is also provided with a wind speed regulation feedback receiving port, and the EC fan 5 is provided with a wind speed regulation feedback output port electrically connected with the wind speed regulation feedback receiving port through a signal feedback line 4; the EC fan 5 comprises a voltage conversion module, and the voltage conversion module can convert the actual rotating speed of the EC fan 5 into a voltage signal and feed the voltage signal back to the air conditioner controller 1 through the signal feedback line 4.
According to the air conditioner exhaust system for the railway vehicle, the voltage conversion module is arranged in the EC fan 5, the voltage conversion module can convert the actual rotating speed of the EC fan 5 into an actual voltage signal, the actual voltage signal of the EC fan 5 is fed back to the air conditioner controller 1 through the signal feedback line 4, the air conditioner controller 1 can control the compensation voltage of the corresponding value input to the EC fan 5 according to the difference value of the actual voltage signal and the target driving voltage signal, and therefore the situation that the actual rotating speed of the EC fan 5 has a certain difference value with the preset rotating speed and a worker cannot find the defect to cause that the actual air volume of the fan cannot meet the actual demand is effectively avoided.
Further, the power supply system further comprises a power supply module 2, the power supply module 2 is a power supply of the train power supply system, the EC fan 5 comprises a power supply input port electrically connected with the power supply module 2, and the power supply module 2 can provide direct-current power supply for the EC fan 5 through the power supply input port.
According to the air conditioner exhaust system for the railway vehicle, the power module 2 arranged in the exhaust device 9 provides the direct-current power supply for the EC fan 5, so that the input of the direct-current power supply for the EC fan 5 can be maintained during normal power supply and emergency power supply of a train, the design that an emergency ventilation inverter needs to be additionally arranged in the exhaust device 9 during early emergency ventilation power supply is saved, and the effects of reducing weight and saving space are achieved.
Furthermore, in order to avoid the influence of air pressure fluctuation on the interior of the carriage and improve the comfort of the passenger room, a pressure wave protection device is installed in the head car carriage. Specifically, pressure wave protection device installs in 9 cavities of exhaust apparatus, and what correspond installs pressure wave sensor inside and outside the carriage, pressure wave sensor can feed back the size of the inside and outside pressure wave in the carriage that detects to air conditioner controller 1. The air conditioner controller 1 can control the opening and closing of the pressure wave protection device according to the pressure wave signal of the air inside and outside the vehicle cabin detected by the pressure wave sensor. The exhaust apparatus 9 that this embodiment provided guarantees the normal taking a breath in the carriage under normal condition, can pass through again when the sudden change of pressure wave protection device prevents the pressure wave and gets into in the carriage, provides more comfortable experience by bus for the passenger.
Further, the pressure wave protection device comprises a first pressure protection valve 6 electrically connected with a first pressure regulation output port of the air conditioner controller 1 and a second pressure protection valve 7 electrically connected with a second pressure regulation output port of the air conditioner controller 1, when pressure fluctuation in a carriage is abnormal in the running process of a train, the air conditioner controller 1 issues closing commands of the first pressure protection valve 6 and the second pressure protection valve 7, and the influence of the air pressure fluctuation on the carriage is avoided.
Preferably, as shown in fig. 1 and fig. 2, the first pressure protection valve 6 has a first pressure chamber therein, the first pressure chamber is provided with a first air port, and a first valve plate 61 is arranged on the first air port in an openable and closable manner; a second pressure cavity is arranged in the second pressure protection valve 7, a second air port is arranged on the second pressure cavity, and a second valve plate 71 is arranged on the second air port in an openable and closable manner; the first air port is larger than the second air port, and the area of the first valve plate 61 is larger than that of the second valve plate 71.
In this embodiment, the first pressure protection valve 6/the second pressure protection valve 7 includes a bottom plate, a first air port/a second air port is provided on the bottom plate, sealing strips are provided at the edges around the first air port/the second air port, two symmetrical sides on the bottom plate are provided with vertical columns, a first valve plate 61/a second valve plate 71 is provided above the bottom plate, the first valve plate 61/the second valve plate 71 is slidably provided on the vertical columns up and down, the first valve plate 61/the second valve plate 71 is electrically connected with a cylinder and an electromagnetic valve which drive the first valve plate 61/the second valve plate 71 to move up and down, and the first valve plate 61/the second valve plate 71 moves down and then falls on the sealing rubber strips and blocks the first air port/the second air port.
According to the air conditioning exhaust system for the railway vehicle, the passive first pressure protection valve 6 and the passive second pressure protection valve 7 are integrated in the exhaust device 9, so that the function of obstructing air pressure fluctuation from influencing the interior of a carriage in a pressure fluctuation emergency closing mode can be realized, the first valve plate 61 and the second valve plate 71 which are different in size can be controlled to act in a time-sharing mode respectively, and the requirement of fresh air volume three-gear air volume adjusting control is met.
Further, still including the air current detection device 8 that is used for detecting 5 operating condition of EC fan, air current detection device 8 is installed in exhaust apparatus 9 cavity, air current detection device 8 with air current detection port electricity of air conditioner controller 1 is connected, rotates the back at EC fan 5 operation, can produce certain air current, utilizes the static pressure of the inside air current of exhaust apparatus 9 cavity to promote the action of air current detection device 8, when the inside wind pressure value of exhaust apparatus 9 reaches air current detection device 8 and sets for the wind pressure value, and air conditioner controller 1 judges the operating condition of EC fan 5 according to the received closed signal of air current detection device 8 that air conditioner controller 8 is closed.
Preferably, the airflow detecting device 8 includes a wind pressure switch connected between the airflow detecting port of the air conditioner controller 1 and the power module 2, and the wind pressure generated by the gas inside the cavity of the exhaust device 9 can trigger the on/off of the wind pressure switch. As shown in fig. 1, when the exhaust device 9 is not used, the wind pressure switch is in an open state, the connection contact 1 and the connection contact 2 are in a disconnected state, and after the EC fan 5 operates and rotates, the static pressure of the gas in the cavity of the exhaust device 9 is used to push the wind pressure switch to act, so that the connection contact 1 and the connection contact 2 are conducted and closed, and the EC fan 5 is inferred to normally operate.
The air conditioner exhaust system for the rail vehicle provided by the embodiment judges whether the working state of the EC fan 5 is normal or not through the airflow detection device 8 arranged in the cavity of the exhaust device 9, after the EC fan 5 works and operates, airflow is generated, the wind pressure switch of the airflow detection device 8 is triggered to generate closing action, a connection contact closing signal is fed back to the air conditioner controller 1, the air conditioner controller 1 receives the signal and then determines that the airflow detection device 8 is started to work, and the EC fan 5 is determined to normally operate.
If the air conditioner controller 1 issues the speed regulation control signal, but the wind pressure switch does not act, the connecting contact 1 and the connecting contact 2 are still in a disconnected state, and the air conditioner controller 1 does not receive the corresponding feedback closing signal, it is inferred that the EC fan 5 may have a fault, and an alarm signal is uploaded.
The embodiment also provides a control method of the air conditioning exhaust system for the railway vehicle, and the controller of the EC fan 5 can adjust the air volume of the EC fan 5 according to the received speed regulation control signal sent to the EC fan 5 by the air conditioning controller 1.
Further, the air speed adjusting output port of the air conditioner controller 1 inputs target driving voltage signals with different values to the EC fan 5, and the EC fan 5 linearly adjusts the rotation speed of the EC fan 5 according to the received target driving voltage signal value, thereby realizing the control of the air volume.
Preferably, the signal value of the target driving voltage is an adjustable direct current driving voltage signal with a wide range of 0 to mV, after the EC fan 5 receives the driving voltage signal issued by the air conditioner controller 1, the rotation speed of the EC fan 5 may be correspondingly adjusted, and the higher the voltage signal value is, the faster the rotation speed of the EC fan 5 is correspondingly controlled.
Further, the voltage conversion module of the EC fan 5 converts the actual rotation speed of the EC fan 5 into an actual voltage signal and feeds the actual voltage signal back to the air conditioner controller 1 through the signal feedback line 4, and the air conditioner controller 1 controls the input of the compensation voltage with a corresponding value to the EC fan 5 according to the difference value between the actual voltage signal and the target driving voltage signal, so that the situation that the actual rotation speed of the EC fan 5 has a certain difference value with the preset rotation speed and a worker cannot find the defect to cause that the actual air volume of the fan cannot meet the actual demand is effectively avoided.
Further, the air conditioner controller 1 controls the opening and closing of the pressure wave protection device according to the magnitude of the pressure wave signals inside and outside the carriage detected by the pressure wave sensor, so that when trains meet or pass in and out of the tunnel, severe compression or expansion pressure fluctuation generated instantly by gas between the vehicles or between the vehicles and the tunnel influences the interior of the carriage, the comfort of a passenger room is improved, the pressure wave protection control device is installed on a head car, and the first pressure protection valve 6 and/or the second pressure protection valve 7 are controlled to be opened or closed by the air conditioner controller 1 to avoid the influence of the air pressure fluctuation on the interior of the carriage by detecting the change of the air pressure inside and outside the carriage.
Preferably, the air conditioner controller 1 may control the first valve plate 61 and the second valve plate 71 of the pressure wave protection device to perform time-sharing operation, so as to realize multi-level air volume adjustment control of the fresh air volume. Specifically, the air conditioning controller 1 can control the first valve plate 61 to close and the second valve plate 71 to open, or control the first valve plate 61 to open and the second valve plate 71 to close, or control the first valve plate 61 and the second valve plate 71 to open, so as to realize the adjustment and control of the low, medium and high wind shielding amount of the fresh air, so as to meet different requirements on the circulation rate of the external fresh air.
The embodiments in the above embodiments can be further combined or replaced, and the embodiments are only described in the preferred embodiments of the present invention, which is not limited to the concept and scope of the present invention, and without departing from the design concept of the present invention, various changes and improvements made by the technical solutions of the present invention by those skilled in the art all belong to the protection scope of the present invention.
Claims (10)
1. An air conditioning exhaust system for a rail vehicle, comprising:
an air conditioner controller;
an exhaust mounted within the rail vehicle;
the exhaust device comprises an EC fan, and the air conditioner controller can send a speed regulation control signal to the EC fan to adjust the air volume of the EC fan.
2. The air conditioning exhaust system for the railway vehicle as claimed in claim 1, wherein:
the air conditioner controller is provided with a wind speed adjusting output port, the EC fan is provided with a wind speed adjusting input port which is electrically connected with the wind speed adjusting output port through a signal input line, and the speed adjusting control signal is a driving voltage signal which is sent to the EC fan by the air conditioner controller through the signal input line.
3. The air conditioning exhaust system for the railway vehicle as claimed in claim 2, wherein:
the driving voltage signal is an adjustable direct current driving voltage signal of 0-mV, wherein m is more than or equal to 3.
4. The air conditioning exhaust system for the railway vehicle as claimed in claim 2, wherein:
the air conditioner controller is also provided with a wind speed regulation feedback receiving port, and the EC fan is provided with a wind speed regulation feedback output port which is electrically connected with the wind speed regulation feedback receiving port through a signal feedback line;
the EC fan comprises a voltage conversion module, and the voltage conversion module can convert the actual rotating speed of the EC fan into a voltage signal and feed the voltage signal back to the air conditioner controller.
5. Air conditioning exhaust system for rail vehicles according to any of claims 1 to 4, characterized in that:
the EC fan comprises a power supply input port electrically connected with the power supply module, and the power supply module can provide direct-current power supply for the EC fan through the power supply input port.
6. Air conditioning exhaust system for rail vehicles according to any of claims 1 to 4, characterized in that:
still including installing the pressure wave protection device in the exhaust apparatus cavity and installing the inside and outside pressure wave sensor in the carriage, air conditioner controller can control according to the inside and outside pressure wave signal in carriage that pressure wave sensor detected the switching condition of pressure wave protection device.
7. The air conditioning exhaust system for the railway vehicle as claimed in claim 6, wherein:
the pressure wave protection device comprises a first pressure protection valve electrically connected with a first pressure regulation output port of the air conditioner controller and a second pressure protection valve electrically connected with a second pressure regulation output port of the air conditioner controller.
8. The air conditioning exhaust system for the railway vehicle as claimed in claim 7, wherein:
the first pressure protection valve is internally provided with a first pressure cavity, the first pressure cavity is provided with a first air port, and a first valve plate is arranged on the first air port in an openable and closable manner;
a second pressure cavity is formed in the second pressure protection valve, a second air port is formed in the second pressure cavity, and a second valve plate is arranged on the second air port in an openable and closable manner;
the first air opening is larger than the second air opening, and the area of the first valve plate is larger than that of the second valve plate.
9. Air conditioning exhaust system for rail vehicles according to any of claims 1 to 4, characterized in that:
the air flow detection device is arranged in the exhaust device cavity and is electrically connected with an air flow detection port of the air conditioner controller.
10. The air conditioning exhaust system for the railway vehicle as claimed in claim 9, wherein:
the air flow detection device comprises a wind pressure switch connected between an air flow detection port of the air conditioner controller and the power supply module, and the wind pressure generated by the gas in the exhaust device cavity can trigger the on/off of the wind pressure switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583645.XU CN212605133U (en) | 2020-08-03 | 2020-08-03 | Air conditioner exhaust system for rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583645.XU CN212605133U (en) | 2020-08-03 | 2020-08-03 | Air conditioner exhaust system for rail vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212605133U true CN212605133U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021583645.XU Active CN212605133U (en) | 2020-08-03 | 2020-08-03 | Air conditioner exhaust system for rail vehicle |
Country Status (1)
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|---|---|
| CN (1) | CN212605133U (en) |
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2020
- 2020-08-03 CN CN202021583645.XU patent/CN212605133U/en active Active
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