Double-fan pressurized air supply system and working method

A technology of air supply system and double fan, which is applied in the direction of ventilation system, heating and ventilation control system, heating and ventilation safety system, etc. It can solve the problems of large size of pressurized blower, large power consumption, high power of pressurized blower, etc. Achieve the effect of prolonging the continuous working time and avoiding paralysis

Inactive Publication Date: 2021-12-28
NANJING YANGTZE RIVER URBAN AGCHITECTURAL DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] From the parameters of the pressurized blower shown in Table 1, it can be known that the pressurized blower is large in size, requires a large machine room, has high power, and consumes a lot of electricity. Due to the high building height, the required blower head is also large; Moreover, in a conventional pressurized air supply system, only one pressurized air supply fan is provided in a pressurized air supply system, and no spare pressurized air supply fan is provided. If the pressurized air supply fan fails, the entire pressurized air supply system will be damaged. Paralyzed due to failure, unable to realize pressurized air supply work

Method used

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  • Double-fan pressurized air supply system and working method
  • Double-fan pressurized air supply system and working method

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Embodiment 1

[0043] like figure 1 Shown, the present embodiment is a kind of double fan pressurized air supply system, comprises building roof machine room 11, building basement machine room 12 and building pipe well 13, is provided with air pipe 3 in building pipe well 13, and air pipe 3 is connected from building pipe well 13 The top extends vertically downwards to the bottom of the building tube well 13; the side wall of the service object space 1 inside the building is provided with a pressurized air supply port 2 communicating with the air duct 3; in this embodiment, the service object space 1 inside the building is the interior of the building The front room of each floor; the pressurized air outlet 2 is a normally closed air outlet;

[0044] The computer room 11 on the roof of the building and the computer room 12 in the basement of the building are respectively provided with a pressurized blower 4, the air inlet of the pressurized blower 4 communicates with the outside, and the ai...

Embodiment 2

[0065] like figure 2 As shown, this embodiment is a dual-fan pressurized air supply system. This embodiment is similar to Embodiment 1, the only difference is that in this embodiment, the service object space 1 inside the building is the stairwell inside the building; because the stairs The room is connected up and down. Compared with the traditional air supply method with only one pressurized blower 4, the double-fan pressurized air supply system in this embodiment can make the air volume distribution in the stairwell more uniform and make the positive pressure value in the stairwell faster. When the set value is reached; when the double-fan pressurized air supply system supplies air to the stairwell, the pressurized air supply port 2 is a normally open air port; the pressurized air supply port 2 is always open and does not need to be installed on each floor. It only needs to be installed on odd-numbered or even-numbered floors, and the pressure detector 18 does not need to ...

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Abstract

The invention discloses a double-fan pressurized air supply system. The system comprises a building roof machine room, a building basement machine room and a building tube well, an air pipe is arranged in the building tube well, and a pressurized air supply opening communicated with the air pipe is formed in a side wall of a service object space in a building; the building roof machine room and the building basement machine room are respectively provided with a pressurized air feeder, an air inlet of each pressurized air feeder is communicated with the outside, and an air outlet of each pressurized air feeder is communicated with the air pipe; and the two pressurized air feeders work synchronously. The building roof machine room and the building basement machine room are each provided with a pressurized air feeder, the two pressurized air feeders supply air to the air pipe in the tube well at the same time, and therefore the total air volume in the air pipe is not changed, the size of the air pipe is reduced by half, and the area of the tube well is reduced by nearly half; and meanwhile, the pressurized air supply system has backup capacity, and if one pressurized air blower breaks down during fire, the other pressurized air blower can still normally conduct pressurized air supply work, so that the whole pressurized air supply system is prevented from being paralyzed due to faults.

Description

technical field [0001] The invention relates to a double fan pressurized air supply system and a working method, belonging to the technical field of pressurized air supply systems. Background technique [0002] When a fire breaks out in a building, especially a high-rise building, the smoke will spread along the corridor to the front room or the stairwell, and the front room or the stairwell is an important evacuation channel for the crowd to escape, and a certain positive pressure must be maintained to prevent the smoke from spreading. Intrusion, Article 3.4.4 of the national standard "Technical Standards for Smoke Prevention and Smoke Exhaust Systems in Buildings" GB51251-2017 stipulates that the pressure difference between the front room and the corridor should be 25Pa ~ 30Pa, and the pressure difference between the stairwell and the corridor should be It is 40Pa~50Pa; in order to meet the positive pressure requirements of the front room or stairwell, high-rise buildings ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F7/06F24F11/34F24F11/64F24F11/75F24F11/80F24F13/02F24F110/10F24F110/40
CPCF24F7/06F24F11/34F24F11/64F24F11/75F24F11/80F24F13/02F24F2110/10F24F2110/40
Inventor 顾诚新任体秀
Owner NANJING YANGTZE RIVER URBAN AGCHITECTURAL DESIGN
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