CN114704884A - Mechanical method subway platform induction type ventilation air conditioning system and ventilation method - Google Patents
Mechanical method subway platform induction type ventilation air conditioning system and ventilation method Download PDFInfo
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- CN114704884A CN114704884A CN202210364494.6A CN202210364494A CN114704884A CN 114704884 A CN114704884 A CN 114704884A CN 202210364494 A CN202210364494 A CN 202210364494A CN 114704884 A CN114704884 A CN 114704884A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 67
- 238000009423 ventilation Methods 0.000 title claims abstract description 51
- 238000010297 mechanical methods and process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 14
- 230000006698 induction Effects 0.000 title claims description 12
- 239000000779 smoke Substances 0.000 claims abstract description 37
- 230000008520 organization Effects 0.000 claims abstract description 7
- 230000001939 inductive effect Effects 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
- F24F11/34—Responding to malfunctions or emergencies to fire, excessive heat or smoke by opening air passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
- F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Ventilation (AREA)
Abstract
An induced ventilation air-conditioning system for a mechanical method subway platform comprises a fresh air shaft, an exhaust air shaft and a plurality of jet fans, wherein the fresh air shaft is communicated with one end of the air-conditioning system through a pipeline; the other end of the air conditioning system is communicated with an air conditioning blast pipe in the standing plate through a pipeline; and a plurality of attached air supply outlet devices arranged on the standing plate are communicated with an air supply pipe of the air conditioner through a pipeline. The invention optimizes the air conditioning and smoke exhaust airflow organization of the platform layer, cancels the return air duct of the public area of the platform layer, improves the platform clearance, and greatly reduces the platform shield radius and the engineering cost.
Description
Technical Field
The invention relates to the technical field of ventilation of station platform layers of a station by a mechanical method, in particular to an induced ventilation air-conditioning system and a ventilation method for a subway platform by the mechanical method.
Background
At present, the domestic subway station is mainly built by combining open excavation, underground excavation and light and shade excavation, the open excavation station needs to occupy larger ground space in the building process, and the station building is more and more necessary to be realized by a mechanical method in the urban center without pipeline modification, house removal and traffic evacuation.
The ventilation air-conditioning system of the underground station is configured in an air-conditioning mode that an all-air system is taken as a main mode and a distributed air-conditioning tail end is taken as an auxiliary mode, generally, the ventilation air-conditioning system is an air pipe arrangement mode that one air pipe is fed back or two air pipes are fed back, the space requirement occupied by a huge ventilation air-conditioning pipeline cannot be met when a mechanical station with limited construction conditions is constructed, the main design difficulty of the mechanical station is in a station platform layer, the pipeline arrangement of the mechanical station platform layer is realized at present, and the traditional system does not meet the requirement.
Based on this, under the large environment where the mechanical method station is prevalent, the traditional ventilation air-conditioning system already restricts the push of the mechanical method station to a certain extent, in order to adapt to the special form of the mechanical method station platform layer and meet the comfort requirement of passengers, under the condition that the configuration of the station ventilation air-conditioning is not reduced, the ventilation air-conditioning system of the station must be properly and reasonably adjusted, and a new ventilation mode is required to replace the traditional air-conditioning ventilation system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an induced ventilation air-conditioning system and a ventilation method for a mechanical subway platform, which optimize air-conditioning and smoke exhaust airflow organization of a public area, cancel a return air pipe of the public area of a platform layer, improve the platform clearance and reduce the platform shield radius and the engineering cost; in order to realize the purpose, the invention is realized by the following technical scheme:
an induced ventilation air-conditioning system of a mechanical subway platform comprises a fresh air well, an exhaust air well and a plurality of jet fans, wherein the fresh air well is communicated with one end of an air-conditioning system through a pipeline, the exhaust air well is communicated with one ends of two groups of smoke exhaust fans in parallel through a pipeline, the other ends of the two groups of smoke exhaust fans are respectively communicated with an exhaust and smoke exhaust air inlet and a return air inlet through pipelines, the jet fans are arranged on the upper side of a platform layer of a mechanical subway station and are distributed in a dot matrix manner, the equipment spacing between the adjacent jet fans is controlled to be 10-20 m, and the jet fans are used for longitudinally inducing ventilation; the other end of the air conditioning system is communicated with an air conditioning blast pipe in a platform plate laid at the bottom of the platform layer through a pipeline; and a plurality of attached air supply outlet devices are arranged on the station board and are communicated with the air conditioning air supply pipe through pipelines.
Preferably, the fresh air shaft, the exhaust shaft, the air conditioning system and the smoke exhaust fan are all positioned in a centralized air returning chamber of the mechanical station, and the centralized air returning chamber is positioned in an open cut shaft section of the mechanical station.
Preferably, the exhaust and exhaust air inlet, the return air inlet, the jet fan and the attached air supply outlet device are all arranged on a platform layer of the mechanical method station, and the platform layer is positioned on a mechanical method shield section of the mechanical method station.
Preferably, the pipeline is provided with 1 or more air valve assemblies according to the air flow regulation requirement.
Preferably, the number of the jet flow fans is not less than 2.
Preferably, the jet fan adopts an ultra-silent fan with double speed, double direction and high temperature resistance.
Preferably, the number of the attached air supply outlet devices is not less than 2, and the equipment interval between every two adjacent attached air supply outlet devices is controlled to be 6-8 meters.
Preferably, the height of the attached air supply outlet device is controlled to be 2.3-2.5 meters.
The ventilation method realized by utilizing the induction type ventilation air-conditioning system comprises the following steps:
s1, starting a jet fan for induction, and performing induced ventilation on the station platform layer;
s2, under normal working conditions, carrying out attached air supply by using an attached air supply outlet device and an air conditioning system in the station plate, carrying out longitudinal induced ventilation in the station by using a low-speed running jet fan, carrying out air-conditioning air-returning and exhausting operation by matching with an air return inlet, returning return air to a centralized air return chamber, and realizing in-station circulation by using the air conditioning system; the airflow organization requirements under different working conditions are realized by controlling the forward and reverse rotation combination of the jet flow fan;
and S3, if a fire occurs, the jet fan operates at a high speed to induce smoke discharge, the smoke generated by the fire is concentrated at the end of the station, and at the moment, an air discharge and smoke discharge port communicated with the exhaust duct and an air valve connected in series with the air discharge port are opened to discharge the smoke.
The invention has the beneficial effects that:
1. the system is simple in ventilation method and flexible in arrangement, the defect that the space of a station layer of a mechanical station is compact can be effectively overcome, meanwhile, an air supply pipe is arranged below a station plate of the station layer to carry out attached air supply, induced return air at the upper end of a jet fan is more energy-saving and effective than a traditional upward-conveying and upward-returning air exhaust mode, induced smoke exhaust during fire can be longitudinally induced to exhaust according to the position of a fire point, and the smoke exhaust effect is more rapid and effective than a traditional smoke exhaust mode. The problem of insufficient space of a station by a mechanical method is effectively solved, and the ventilation air-conditioning system is more energy-saving, efficient and effective than the traditional ventilation air-conditioning system.
2. The invention optimizes the air conditioning and smoke exhaust air flow organization of the public area, cancels the return air pipe of the station layer public area, improves the station clearance, greatly reduces the shield radius of the station and reduces the construction cost.
Drawings
Fig. 1 is a schematic longitudinal sectional view of an induced air-conditioning ventilation system of a station platform layer by a mechanical method.
In the figure: 1. a station hall layer; 2. a station layer; 3. a station board; 4. a jet fan; 5. attaching an air supply outlet device; 6. an air return opening; 7. an air exhaust and exhaust port; 8. an air conditioning system; 9. a smoke exhaust fan; 10. an air discharge well; 11. a fresh air shaft; 12. an air valve.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
in order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described below with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1, an induced ventilation air conditioning system for a mechanical subway platform comprises a fresh air shaft 11, an exhaust shaft 10 and a plurality of jet fans 4, wherein, the fresh air well 11 is communicated with one end of the air conditioning system 8 through a pipeline, the other end of the air conditioning system 8 is communicated with an air conditioning blast pipe in the platform plate 3 laid at the bottom of the platform layer 2 through a pipeline, a plurality of attached air supply outlet devices 5 are also arranged on the platform plate 3, the attached air supply outlet devices 5 are communicated with an air supply pipe of the air conditioner through a pipeline, is used for supplying air to the station layer 2, in addition, the number of the air supply outlet devices 5 which are attached is reasonably set according to the plane area of the station layer 2, the minimum number is not less than 2, the equipment distance between every two adjacent groups of attached air supply outlet devices is controlled to be 6-8 m most suitable, and ventilation and air circulation in the station layer 2 are guaranteed; the attached air supply outlet device 5 is also determined according to the side hole opening position of the mechanical station, the hole opening range needs to be avoided, the attached air supply outlet device 5 is arranged by combining the side wall of the duct piece, and the height of the attached air supply outlet device 5 is preferably controlled to be 2.3-2.5 meters.
The exhaust shaft 10 is communicated with one end of two groups of exhaust fans 9 in parallel through a pipeline, the other end of the two groups of exhaust fans 9 is communicated with an exhaust and exhaust air port 7 and a return air port 6 through pipelines respectively, the jet fans 4 are arranged on the upper side of a platform layer 2 of a mechanical station and adopt a dot matrix layout, the equipment spacing between adjacent jet fans 4 is controlled to be 10-20 m, the type selection of the jet fans 4 adopts double-speed, bidirectional, high-temperature resistant, super-silent type fans, and fans with small diameters, the number of the jet fans 4 is not less than 2, the number of the jet fans 4 is selected as even as possible and is symmetrically distributed on the upper end of the platform layer 2, the orientation of the jet fans 4 can be selected according to the fluidity of the air flow direction, and the air flow is ensured to form circulating air flow under the driving of the jet fans 4. Further, the jet fan 4 is used for longitudinal induced ventilation, and performs attached air supply through an air-conditioning air supply duct and an attached air supply outlet device 5 in the station board 3, and forms a circulating air flow in the station through a return air inlet 6 and an air-conditioning system 8.
The fresh air shaft 11, the exhaust shaft 10, the air conditioning system 8 and the smoke exhaust fan 9 are all positioned in a centralized air returning chamber of the mechanical method station, and the centralized air returning chamber is positioned in an open cut shaft section of the mechanical method station; the air exhaust and smoke exhaust port 7, the air return port 6, the jet fan 4 and the attached air supply port device 5 are all arranged on a platform layer 2 of the mechanical method station, and the platform layer 2 is positioned on a mechanical method shield section of the mechanical method station; the pipeline used in the mechanical law station of the invention needs to be provided with 1 or more air valve 12 components according to the air flow regulation requirement, and the air valve 12 components are used for opening or closing a certain air valve 12 in the air flow circulation process, thereby achieving the purpose of controlling air flow circulation and discharge.
Example 2:
a ventilation method implemented using the induction type ventilation air-conditioning system of embodiment 1, comprising the steps of:
s1, starting the jet flow fan 4 to perform an inducing action, and performing induced ventilation on the station platform layer 2;
s2, under normal working conditions, carrying out attached air supply by using an attached air supply outlet device 5 and an air conditioning system 8 in the station plate 3, carrying out longitudinal induced ventilation in the station by using a jet flow fan 4 running at a low speed, carrying out air-conditioning air return and exhaust operation by matching with an air return inlet 6, returning air to a concentrated air return chamber, and realizing in-station circulation by using the air conditioning system 8; the airflow organization requirements under different working conditions are realized by controlling the forward and reverse rotation combination of the jet flow fan 4;
s3, if a fire occurs, the jet fan 4 operates at high speed to induce smoke discharge, the smoke generated by the fire is concentrated at the end of the station, and at the moment, the air discharge and smoke discharge port 7 communicated with the exhaust duct and the air valve 12 connected in series are opened to discharge the smoke.
The system of the invention sets up the jet fan 4 on the top of the platform layer 2 of station of mechanical method station, set up the air-conditioning blast pipe to supply air under the platform plate 3, set up the attachment blast hole apparatus 5 along the wall, the station end sets up and concentrates and sends back the wind chamber, exhaust well 10, concentrate and send back the wind chamber and set up the wind gap directly to connect the public area with the exhaust well 10 alone; under the normal working condition, the jet flow fan 4 is started to run at a low speed, the return air valve 12 with the series-connected return air pipelines is started, dirty air of the station is concentrated at the end of the station by utilizing the induction effect, and the dirty air flows back to the air conditioning system 8 and the exhaust well 10 through return air; under the working condition of fire, the jet fan 4 is started to run at a high speed, smoke generated at the fire point is concentrated at the end of a station, and at the moment, the exhaust shaft 10 and the air valve 12 connected in series with the exhaust shaft are started to exhaust smoke. The ventilation method can directly send cold air to the personnel activity area, and exhaust air is induced at a high position to form annular airflow, so that the ventilation method is an efficient airflow organization; meanwhile, under the working condition of fire, the hydraulic balance at the tail end of a common system is generally difficult to realize, the tail end is often poor in smoke exhaust effect, the jet fan 4 is adopted for induced smoke exhaust, smoke can be rapidly concentrated at the end of a station, and the concentrated smoke exhaust effect of the end is obvious. The ventilation method is suitable for ventilation and smoke exhaust of the station layer 2 of the station by a mechanical method.
The method changes the return air pipe above the public area of the platform layer 2 into the jet flow fan 4, the jet flow fan 4 is used for inducing return air in low-speed operation at ordinary times, and the return air returns to the concentrated return air chamber of the air conditioning system 8 through the return air ducts near the doors at the two ends of the platform. Under the working condition of fire, the jet flow fan 4 runs at a high speed to induce smoke discharge, the smoke is discharged to the exhaust duct, and the air conditioning blast pipe below the air conditioning blast pipe supplies air at ordinary times.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (9)
1. An induced ventilation air-conditioning system of a mechanical subway platform comprises a fresh air well, an exhaust air well and a plurality of jet fans, and is characterized in that the fresh air well is communicated with one end of an air-conditioning system through a pipeline, the exhaust air well is communicated with one ends of two groups of smoke exhaust fans in parallel through a pipeline, the other ends of the two groups of smoke exhaust fans are respectively communicated with an exhaust and exhaust air inlet and a return air inlet through pipelines, the jet fans are arranged on the upper side of a platform layer of a mechanical station and are in dot matrix layout, the equipment spacing between the adjacent jet fans is controlled to be 10-20 m, and the jet fans are used for longitudinally inducing ventilation; the other end of the air conditioning system is communicated with an air conditioning blast pipe in a platform plate laid at the bottom of the platform layer through a pipeline; and a plurality of attached air supply outlet devices are arranged on the station board and are communicated with the air conditioning air supply pipe through pipelines.
2. The mechanical method subway platform induction type ventilation air-conditioning system as claimed in claim 1, wherein said fresh air shaft, said air exhaust shaft, said air-conditioning system and said smoke exhaust fan are all located in the centralized air return chamber of the mechanical method station, said centralized air return chamber is located in the open cut shaft section of the mechanical method station.
3. The mechanical method subway platform induction type ventilation air-conditioning system as claimed in claim 1, wherein said exhaust and exhaust air inlet, air return inlet, jet fan and attached air supply outlet device are all installed on the platform layer of the mechanical method station, said platform layer is located on the mechanical method shield segment of the mechanical method station.
4. The mechanical metro platform induced ventilation air conditioning system according to claim 1, wherein 1 or more air valve assemblies are arranged on the pipeline according to the air flow regulation requirement.
5. The mechanical metro platform induced ventilation air conditioning system according to claim 1, wherein the number of the jet flow fans is not less than 2.
6. The mechanical metro platform induction type ventilation air conditioning system according to claim 5, wherein the jet fan is a super-silent fan with double speed, bidirectional and high temperature resistance.
7. The induction type ventilation air-conditioning system for a mechanical subway platform as claimed in claim 1, wherein the number of said attached air supply outlet means is not less than 2, and the equipment interval between every two adjacent said attached air supply outlet means is controlled to be 6-8 m.
8. The induction type ventilation air-conditioning system for the mechanical subway platform as claimed in claim 7, wherein the height of said attached air blowing opening device is controlled to be 2.3-2.5 m.
9. The ventilation method implemented by using the induced draft air conditioning system according to any of claims 1 to 8, comprising the steps of:
s1, starting a jet fan for induction, and performing induced ventilation on the station platform layer;
s2, under normal working conditions, carrying out attached air supply by using an attached air supply outlet device and an air conditioning system in the station plate, carrying out longitudinal induced ventilation in the station by using a low-speed running jet fan, carrying out air-conditioning air-returning and exhausting operation by matching with an air return inlet, returning return air to a centralized air return chamber, and realizing in-station circulation by using the air conditioning system; the airflow organization requirements under different working conditions are realized by controlling the forward and reverse rotation combination of the jet flow fan;
and S3, if a fire occurs, the jet fan operates at a high speed to induce smoke discharge, the smoke generated by the fire is concentrated at the end of the station, and at the moment, an air discharge and smoke discharge port communicated with the exhaust duct and an air valve connected in series with the air discharge port are opened to discharge the smoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210364494.6A CN114704884A (en) | 2022-04-08 | 2022-04-08 | Mechanical method subway platform induction type ventilation air conditioning system and ventilation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210364494.6A CN114704884A (en) | 2022-04-08 | 2022-04-08 | Mechanical method subway platform induction type ventilation air conditioning system and ventilation method |
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| CN114704884A true CN114704884A (en) | 2022-07-05 |
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| CN202210364494.6A Pending CN114704884A (en) | 2022-04-08 | 2022-04-08 | Mechanical method subway platform induction type ventilation air conditioning system and ventilation method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016951A (en) * | 2004-06-03 | 2006-01-19 | Mitsubishi Electric Corp | Air conditioning system for underground space |
| CN108131770A (en) * | 2018-01-16 | 2018-06-08 | 江苏中森建筑设计有限公司 | A kind of dwelling house, automobile library ventilation and exhaust system |
| CN210220010U (en) * | 2019-07-08 | 2020-03-31 | 中铁二院工程集团有限责任公司 | Ventilation and air-conditioning system for public area of subway station |
| CN210951729U (en) * | 2019-11-27 | 2020-07-07 | 中国电建集团成都勘测设计研究院有限公司 | Subway station ventilation system capable of switching air supply and exhaust |
| CN113669812A (en) * | 2021-08-21 | 2021-11-19 | 太原市轨道交通发展有限公司 | Ventilation control method for public area of subway station |
| CN114183867A (en) * | 2021-11-24 | 2022-03-15 | 中铁第五勘察设计院集团有限公司 | Air-conditioning ventilation system of subway underground station platform |
-
2022
- 2022-04-08 CN CN202210364494.6A patent/CN114704884A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016951A (en) * | 2004-06-03 | 2006-01-19 | Mitsubishi Electric Corp | Air conditioning system for underground space |
| CN108131770A (en) * | 2018-01-16 | 2018-06-08 | 江苏中森建筑设计有限公司 | A kind of dwelling house, automobile library ventilation and exhaust system |
| CN210220010U (en) * | 2019-07-08 | 2020-03-31 | 中铁二院工程集团有限责任公司 | Ventilation and air-conditioning system for public area of subway station |
| CN210951729U (en) * | 2019-11-27 | 2020-07-07 | 中国电建集团成都勘测设计研究院有限公司 | Subway station ventilation system capable of switching air supply and exhaust |
| CN113669812A (en) * | 2021-08-21 | 2021-11-19 | 太原市轨道交通发展有限公司 | Ventilation control method for public area of subway station |
| CN114183867A (en) * | 2021-11-24 | 2022-03-15 | 中铁第五勘察设计院集团有限公司 | Air-conditioning ventilation system of subway underground station platform |
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Application publication date: 20220705 |