A public area ventilation and air conditioning system arranges a machine room in the middle of a subway station

Abstract

The application provides a public area ventilation and air conditioning system with a machine room arranged in the middle of a subway station, and relates to the technical field of heating, ventilation and air conditioning of subway stations. The ventilation and air conditioning system with the machine room arranged in the middle of the subway station is configured for a three-floor underground subway station, in which the first floor is a station hall floor, the second floor is an equipment floor, and the third floor is a platform floor. A fresh air shaft and an exhaust air shaft are arranged in the middle of the subway station, and the fresh air shaft and the exhaust air shaft are configured for the inlet and outlet air of the whole station. A public area environment control machine room is arranged in the middle of the station hall floor, a refrigeration machine room, an environment control machine room for equipment management rooms and a heat exhaust machine room are arranged in the middle of the equipment floor. The environment control machine room, the refrigeration machine room, the fresh air shaft and the exhaust air shaft are arranged in the middle of the station, the number of new exhaust shafts is reduced compared with the conventional two-end arrangement of the station, the large system equipment arrangement is simplified, the area of the environment control machine room is reduced, the construction cost is reduced, the energy consumption is reduced, and the system energy efficiency is improved.

Description

A ventilation and air conditioning system for public areas with computer rooms located in the middle of subway stations. Technical Field

[0001] This invention relates to the field of heating, ventilation and air conditioning technology for subway stations, specifically a ventilation and air conditioning system for public areas in subway stations with the machine room located in the middle. Background Technology

[0002] Currently, the environmental control room and ventilation shafts of the subway stations are located at the left and right ends of the station, respectively, at the ends of the equipment areas at the large and small track levels. Each environmental control room at both ends is equipped with one combined air conditioner, one return / exhaust fan, and one smoke exhaust fan to serve the public areas, and other air conditioners and fans to serve the equipment management rooms at their respective ends. The refrigeration room is located near the load center, generally in the large-end equipment area. Exhaust ducts are located at both ends, with one exhaust fan at each end, responsible for exhausting half of the exhaust air for the left and right tracks, as well as smoke exhaust from the track area.

[0003] The ventilation and air conditioning equipment in the public area and the ventilation and air conditioning equipment in the equipment management room share a common room. There is a significant difference in length between the combined air conditioners in the public area and those in the equipment management room. According to market comparisons, the combined air conditioners in the public area are 2-3 times longer than those in the equipment management room. Designing the longitudinal length of the room based on the combined air conditioners in the public area leads to insufficient utilization of the longitudinal space where the air conditioners and fans in the equipment management room are located, resulting in wasted room space. Air ducts at the large end of the equipment area need to cross the equipment area to reach the public area, resulting in long duct distances, high energy consumption, and problems such as dense, congested pipelines and inconvenient maintenance in the large end equipment area. The refrigeration room is located at the large end of the equipment area, and chilled water pipes need to cross the entire length of the station to connect to the air conditioners at the small end of the equipment area, resulting in long water pipe distances and high energy consumption. The separate placement of fresh air shafts and exhaust shafts at both ends impacts land acquisition and the ground landscape. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a ventilation and air conditioning system that places the computer room in the public area of ​​a subway station, thus optimizing and improving the layout of the ventilation and air conditioning system in a three-level underground subway station.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a ventilation and air conditioning system for a public area with the machine room located in the middle of a subway station. The system is configured for a three-level underground subway station, with the first underground level being the concourse level, the second underground level being the equipment level, and the third underground level being the platform level. A fresh air shaft and an exhaust air shaft are provided in the middle of the subway station, and the fresh air shaft and exhaust air shaft are configured for the intake and exhaust of air for the entire station.

[0006] A public area environmental control room is located in the central attached area of ​​the station hall. This room houses two combined air conditioners, one return / exhaust fan, and one smoke exhaust fan, serving the public area's ventilation and air conditioning system. The two combined air conditioners are connected in parallel, with their air inlet ducts connected to a mixing box. The air inlet of the mixing box is connected to a fresh air shaft. The air outlet ducts of the combined air conditioners are connected to a supply air box. The return / exhaust fan and the smoke exhaust fan are connected in parallel. One side of the exhaust fan outlet duct is connected to the mixing box, and the other side of the return exhaust fan outlet duct is connected to the exhaust shaft. The exhaust fan outlet duct is connected to the exhaust shaft. The return exhaust fan intake and the exhaust fan intake are both connected to the air box. The air box inlet is equipped with a return exhaust duct that also serves as an exhaust duct. The air supply box outlet is equipped with an air supply duct. The air supply duct and the return exhaust duct that also serves as an exhaust duct enter the public area directly from the environmental control room and are laid from the middle of the public area to both ends.

[0007] The equipment floor is equipped with a refrigeration room, an equipment management room, an environmental control room, and an equipment floor exhaust duct. The chilled water pipes of the refrigeration room are connected to the combined air conditioner in the public area environmental control room in the middle of the station and the air conditioner in the equipment management room environmental control room. The equipment management room environmental control room is equipped with equipment such as air conditioners and fans to provide services to the equipment rooms at both ends. An exhaust fan is installed in the equipment floor exhaust duct. The exhaust fan's suction end faces the exhaust air hole and exhausts air to the exhaust duct. It is responsible for exhausting the rail top heat of the left and right tracks and exhausting smoke from the track area. The exhaust air and the exhaust air share the same exhaust shaft.

[0008] The platform level rail top is provided with a platform level heat exhaust duct, and the platform level heat exhaust duct has heat exhaust vents in the middle of the station leading to the equipment level heat exhaust duct.

[0009] Preferably, the air supply duct includes an air supply duct for the platform public area and an air supply duct for the station hall public area.

[0010] Preferably, the return exhaust duct and smoke exhaust duct include a return exhaust duct and smoke exhaust duct for the platform public area and a return exhaust duct and smoke exhaust duct for the station hall public area.

[0011] Preferably, the exhaust fan and the chiller room are located in the central auxiliary area of ​​the station hall. The exhaust fan is located in the central auxiliary area of ​​the station hall, and the exhaust vents of the equipment floor need to be moved to the auxiliary location and connected to the intake end of the exhaust fan in the station hall. The chilled water pipes of the chiller room are connected to the combined air conditioner and the air conditioner in the equipment management room.

[0012] Preferably, the combined air conditioner consists of two units operating in parallel, with the air supply boxes of the combined air conditioner connected by air ducts, and the combined air conditioner is configured to supply air to the public areas of the station hall and platform simultaneously.

[0013] Preferably, the combined air conditioner consists of two units operating in parallel, and the air supply boxes of the combined air conditioner are connected by an air duct equipped with an electric air valve. The combined air conditioner is configured to supply air to the station hall and the public area of ​​the platform by closing the electric air valve.

[0014] Preferably, the combined air conditioner consists of two units, each operating independently. The air supply boxes of the combined air conditioner are connected by a duct equipped with an electric air valve. The combined air conditioner is configured to be mutually redundant by opening the electric air valve.

[0015] This invention provides a ventilation and air conditioning system for arranging the computer room in the public area of ​​a subway station.

[0016] It has the following beneficial effects:

[0017] 1. This invention centrally locates the environmental control room, refrigeration room, fresh air shaft, and exhaust air shaft in the middle of the station, which reduces the number of fresh air ducts and ground-level air shafts compared to the conventional arrangement at both ends of the station. This simplifies the layout of large system equipment, reduces the area of ​​the environmental control room, and lowers the civil construction cost.

[0018] 2. This invention reduces the initial investment in ventilation and air conditioning systems, lowers transmission energy consumption, and improves system energy efficiency by shortening the service radius of air ducts and water pipes. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the central layout of the public area ventilation and air conditioning system of the present invention;

[0020] Figure 2 is a schematic diagram of the central arrangement of the track heat dissipation system of the present invention.

[0021] Among them, 1. Fresh air shaft; 2. Exhaust air shaft; 3. Mixing air box; 4. Combined air conditioner; 5. Return and exhaust fan; 6. Smoke exhaust fan; 7. Supply air box; 8. Air box; 9. Supply air duct for platform public area; 10. Return and exhaust air duct for platform public area (also for smoke exhaust); 11. Supply air duct for concourse public area; 12. Return and exhaust air duct for concourse public area (also for smoke exhaust); 13. Electric air valve; 14. Heat exhaust duct for equipment floor; 15. Heat exhaust duct for platform floor; 16. Heat exhaust fan. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example:

[0024] As shown in Figures 1-2, this embodiment of the invention provides a ventilation and air conditioning system for a public area where the equipment room is located in the middle of a subway station. The system is configured for a three-level underground subway station with the first underground level being the concourse level, the second underground level being the equipment level, and the third underground level being the platform level. A fresh air shaft 1 and an exhaust air shaft 2 are provided in the middle of the subway station. The fresh air shaft 1 and the exhaust air shaft 2 are configured to provide air intake and exhaust for the entire station.

[0025] A public area environmental control room is located in the central auxiliary area of ​​the station hall. Inside the room are two combined air conditioners 4, one return / exhaust fan 5, and one smoke exhaust fan 6, serving the public area's ventilation and air conditioning system. The air inlet ducts of the combined air conditioners 4 are all connected to a mixing box 3, and the air inlet of the mixing box 3 is connected to a fresh air shaft 1. The air outlet ducts of the combined air conditioners 4 are all connected to a supply air box 7. The return / exhaust fan 5 and the smoke exhaust fan 6 are connected in parallel. One side of the air duct is connected to the mixing box 3, the other side of the air duct of the return exhaust fan 5 is connected to the exhaust shaft 2, the air duct of the exhaust fan 6 is connected to the exhaust shaft 2, the air intake of the return exhaust fan 5 and the air intake of the exhaust fan 6 are both connected to the air box 8, the air inlet of the air box 8 is equipped with a return exhaust duct that also serves as an exhaust duct, and the air outlet of the supply air box 7 is equipped with a supply air duct. The supply air duct and the return exhaust duct that also serves as an exhaust duct enter the public area directly from the environmental control room and are laid from the middle of the public area to both ends.

[0026] The equipment floor is equipped with a refrigeration room, an equipment management room, an environmental control room, and an equipment floor exhaust duct 14. The chilled water pipes of the refrigeration room are connected to the combined air conditioner in the public area environmental control room in the middle of the station and the air conditioner in the equipment management room environmental control room. An exhaust fan 16 is installed in the equipment floor exhaust duct 14. The air intake of the exhaust fan 16 is directly opposite the exhaust air hole and exhausts air to the exhaust duct. It is responsible for the exhaust air on the rail top of the left and right tracks and the smoke exhaust in the track area. The exhaust air and the exhaust air share the exhaust shaft 2.

[0027] The platform level rail top is provided with a platform level heat exhaust duct 15, and the platform level heat exhaust duct 15 has heat exhaust vents in the middle of the station leading to the equipment level heat exhaust duct 14.

[0028] By centrally locating the environmental control room, refrigeration room, fresh air shaft 1, and exhaust air shaft 2 in the middle of the station, the number of fresh air ducts and ground-level air shafts is reduced compared to the conventional arrangement of stations at both ends. This simplifies the layout of large system equipment, reduces the area of ​​the environmental control room, and lowers the civil engineering construction cost.

[0029] The air supply ducts include the platform public area air supply duct 9 and the station hall public area air supply duct 11.

[0030] The return ventilation duct and smoke exhaust duct include 10, which is the return ventilation duct and smoke exhaust duct in the platform public area, and 12, which is the return ventilation duct and smoke exhaust duct in the station hall public area.

[0031] The exhaust fans and chiller room are located in the central auxiliary area of ​​the station concourse. The exhaust fans, located in the central auxiliary area of ​​the station concourse, require the exhaust vents on the equipment floor to be moved to the auxiliary location before being connected to the intake end of the exhaust fans on the station concourse floor. The chilled water pipes from the chiller room are connected nearby to the combined air conditioners in the public area of ​​the station concourse and the air conditioners in the equipment management room on the equipment floor.

[0032] The combined air conditioner 4 consists of two units operating in parallel. The air supply boxes 7 of the combined air conditioner 4 are connected by air ducts. The combined air conditioner 4 is configured to supply air to the station hall and the platform public area simultaneously.

[0033] The combined air conditioner 4 consists of two units operating in parallel. The air supply boxes 7 of the combined air conditioner 4 are connected by air ducts equipped with electric air valves 13. The combined air conditioner 4 is configured to supply air to the station hall and the public area of ​​the platform by closing the electric air valves 13.

[0034] The combined air conditioner 4 consists of two units, each operating independently. The air supply boxes 7 of the combined air conditioner 4 are connected by air ducts equipped with electric air valves 13. The combined air conditioner 4 is configured to be mutually redundant by opening the electric air valves 13.

[0035] The combined air conditioner 4 and the air conditioner in the equipment management room have significantly different lengths. Separating the environmental control room in the public area from the environmental control room in the equipment management room allows for full utilization of the room space. The chiller room houses chiller units, chilled water pumps, cooling water pumps, and other cooling source equipment. It can be shared with either the environmental control room in the equipment management room or the environmental control room in the public area. Chilled water pipes are connected to the combined air conditioner 4 and the air conditioner in the equipment management room, both located in the central room, without needing to cross equipment or public areas.

[0036] By shortening the service radius of air ducts and water pipes, the initial investment in ventilation and air conditioning systems is reduced, energy consumption during transmission is lowered, and system energy efficiency is improved.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ventilation and air conditioning system for a public area in the middle of a subway station, characterized in that: The system is configured for a three-level underground subway station, with the first underground level being the concourse level, the second underground level being the equipment level, and the third underground level being the platform level. A fresh air shaft (1) and an exhaust shaft (2) are located in the center of the subway station, configured to provide air intake and exhaust for the entire station. A public area environmental control room is located in the attached external area of ​​the concourse level. The public area environmental control room contains two combined air conditioners (4), one return / exhaust fan (5), and one smoke exhaust fan (6) to serve the public area ventilation and air conditioning system. The combined air conditioners (4) are connected in parallel. All air inlet ducts are connected to a mixing box (3), the air inlet of the mixing box (3) is connected to a fresh air shaft (1), the air outlet ducts of the combined air conditioner (4) are all connected to a supply air box (7), the return exhaust fan (5) and the smoke exhaust fan (6) are connected in parallel, one side of the air outlet duct of the return exhaust fan (5) is connected to the mixing box (3), the other side of the air outlet duct of the return exhaust fan (5) is connected to the exhaust shaft (2), the air outlet duct of the smoke exhaust fan (6) is connected to the exhaust shaft (2), the air intake of the return exhaust fan (5) and the air intake of the smoke exhaust fan (6) are both connected to a wind box (8), and the air inlet of the wind box (8) is provided with The air supply box (7) is equipped with an air supply duct that serves as both a return and exhaust duct and a smoke exhaust duct. The air supply duct and the return and exhaust duct are connected directly from the environmental control room to the public area and are laid from the middle of the public area to both ends. The middle of the equipment floor is equipped with a chiller room, an environmental control room for equipment management, and a heat exhaust duct (14) for the equipment floor. The chilled water pipe of the chiller room is connected to the combined air conditioner (4) or the air conditioner for the equipment management room in the environmental control room for equipment management. A heat exhaust fan (16) is installed in the heat exhaust duct (14) for the equipment floor. The suction end of the heat exhaust fan (16) is directly facing the heat exhaust. The ventilation holes are connected to the exhaust ducts to handle the exhaust of hot air from the rail tops of the left and right tracks and the exhaust of smoke from the track area. The exhaust air and the exhaust share the same exhaust shaft (2). The platform level rail top is provided with a platform level exhaust duct (15). The platform level exhaust duct (15) has exhaust holes in the middle of the station leading to the equipment level exhaust duct (14). The exhaust fan (16) and the chiller room are located in the middle of the station hall. The equipment level exhaust holes need to be moved to the auxiliary position and then connected to the intake end of the station hall level exhaust fan (16). The chilled water pipes of the chiller room are connected to the combined air conditioner (4) and the air conditioner of the equipment management room.

2. The ventilation and air conditioning system for a public area in the middle of a subway station, as described in claim 1, is characterized in that: The air supply ducts include the platform public area air supply duct (9) and the station hall public area air supply duct (11).

3. A ventilation and air conditioning system for a public area in the middle of a subway station, as described in claim 1, is characterized in that: The return ventilation duct and smoke exhaust duct include the platform public area return ventilation duct and smoke exhaust duct (10) and the station hall public area return ventilation duct and smoke exhaust duct (12).

4. A ventilation and air conditioning system for a public area in the middle of a subway station, as described in claim 1, is characterized in that: The combined air conditioner (4) consists of two units operating in parallel. The combined air conditioner (4) is connected to the air supply box (7) by a duct. The combined air conditioner (4) is configured to supply air to the public areas of the station hall and platform at the same time.

5. A ventilation and air conditioning system for a public area in the middle of a subway station, as described in claim 1, characterized in that: The combined air conditioner (4) consists of two units operating in parallel. The combined air conditioner (4) is connected to the air supply box (7) by a duct equipped with an electric air valve (13). The combined air conditioner (4) is configured to supply air to the station hall and the public area of ​​the platform by closing the electric air valve (13).

6. A ventilation and air conditioning system for a public area in the middle of a subway station, as described in claim 1, characterized in that: The combined air conditioner (4) consists of two units, with each unit operating independently. The air supply boxes (7) of the combined air conditioner (4) are connected by air ducts equipped with electric air valves (13). The combined air conditioner (4) is configured to be mutually redundant by opening the electric air valves (13).

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