A smoke and ventilation system that couples smoke extraction and ventilation in a tall space

Abstract

This utility model relates to a smoke and ventilation system that couples smoke exhaust and ventilation in a high-ceilinged space, comprising a plenum chamber, a smoke exhaust system, a ventilation system, and a terminal duct system. The smoke exhaust system includes a main smoke exhaust duct equipped with a smoke exhaust valve. The ventilation system includes a main ventilation duct equipped with a fire damper. The inlet ends of both the main smoke exhaust duct and the main ventilation duct are connected to the plenum chamber, and the outlet ends of both the main smoke exhaust duct and the main ventilation duct are connected to the outside. The terminal duct system includes at least one main smoke and ventilation duct, the outlet end of which is connected to the plenum chamber, and at least one air outlet is provided on the main smoke and ventilation duct. This utility model, by coupling smoke exhaust and ventilation, satisfies both the smoke and ventilation requirements of a high-ceilinged space and the building and owner's requirements for the ceiling height and aesthetics of such spaces.

Description

Technical Field

[0001] This utility model relates to the technical field of building construction, specifically to a smoke and ventilation system that couples smoke exhaust and ventilation in high-ceilinged spaces. Background Technology

[0002] With the formal implementation of the "Technical Standard for Smoke Control and Exhaust Systems in Buildings" (GB51251-2017) and the subsequent promulgation and implementation of fire protection design guidelines in various provinces, the mechanical smoke exhaust volume for high-ceilinged spaces is generally 60,000 m³ / h. 3 / h~130000m 3 / h, the higher the net height of the space, the greater the smoke exhaust volume. When there is no sprinkler in a tall space, the smoke exhaust volume can reach twice the above-mentioned smoke exhaust volume.

[0003] High ceilings also require ventilation to meet indoor air quality requirements. To simultaneously meet the smoke extraction and ventilation needs of high ceilings, the conventional approach is to completely separate the smoke extraction ducts and vents from the ventilation ducts and vents. This involves installing separate smoke extraction and ventilation ducts within the ceiling, as well as smoke extraction and ventilation vents on the ceiling itself. Due to the large volume of smoke extraction, the width and height of the smoke extraction ducts are significant, and the number of smoke extraction vents is also large. Furthermore, ventilation ducts and vents also need to be installed. Adding the existing air conditioning ducts in the high ceiling, this results in numerous and complex wiring within the ceiling, sometimes even overlapping, and many ceiling vents that are difficult to arrange. Using this conventional approach directly impacts the ceiling height and aesthetics of the high ceiling. Utility Model Content

[0004] Based on the above description, this utility model provides a smoke and ventilation system that couples smoke exhaust and ventilation in a high-ceilinged space. By coupling smoke exhaust and ventilation, it not only meets the smoke exhaust and ventilation requirements of a high-ceilinged space, but also meets the requirements of the building and the owner for the clear height and aesthetics of the ceiling in a high-ceilinged space.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a smoke exhaust and ventilation system coupled with smoke exhaust in a high space, including a static pressure box, a smoke exhaust system, a ventilation system and a terminal duct system; The smoke exhaust system includes a main smoke exhaust duct, on which a smoke exhaust valve is installed; the ventilation system includes a main ventilation duct, on which a fire damper is installed; the inlet ends of both the main smoke exhaust duct and the main ventilation duct are connected to the static pressure box, and the outlet ends of both the main smoke exhaust duct and the main ventilation duct are connected to the outside. The terminal piping system includes at least one main exhaust pipe, the outlet of which is connected to the static pressure box, and at least one air outlet is provided on the main exhaust pipe.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the static pressure box, the smoke exhaust system, the ventilation system, and the terminal piping system are installed inside the beam socket.

[0008] Furthermore, each of the main exhaust pipes is provided with at least one exhaust branch pipe at its bottom. The top of the exhaust branch pipe is connected to the corresponding main exhaust pipe, and the bottom of the exhaust branch pipe is connected to the bottom of the ceiling to form the air vent.

[0009] Furthermore, the smoke exhaust branch pipe includes an upper fixed pipe, a telescopic pipe, a lower fixed pipe, and a lifting assembly; the top of the upper fixed pipe is connected to the main smoke exhaust pipe, the top of the telescopic pipe is connected to the bottom of the upper fixed pipe, and the top of the lower fixed pipe is connected to the bottom of the telescopic pipe; the lifting assembly is used to drive the lower fixed pipe to move up and down.

[0010] Furthermore, the lifting assembly includes a fixed frame, an exhaust pipe frame, and a lifting motor; the fixed frame is installed in the beam socket, and the lifting motor is installed on the fixed frame; the exhaust pipe frame is installed on the lower fixed pipe; the output end of the lifting motor is connected to at least one pulley via a transmission, and each pulley is connected to the exhaust pipe frame via a tensioning belt.

[0011] Furthermore, the lifting assembly includes four pulleys and four tightening belts, which are evenly arranged in a square around the lower fixed tube.

[0012] Furthermore, a smoke collection hood is provided at the bottom of the lower fixed tube, and the cross-sectional area of ​​the smoke collection hood gradually increases from top to bottom.

[0013] Furthermore, the cross-sectional area of ​​the main exhaust duct is smaller than that of the main smoke exhaust duct.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. This utility model, by coupling smoke exhaust and ventilation, not only satisfies the smoke exhaust and ventilation requirements of high-ceilinged spaces, but also meets the requirements of buildings and owners for the clear height and aesthetics of ceilings in high-ceilinged spaces; 2. By installing retractable smoke and air exhaust branch pipes, the branch pipes can be extended to lower the height of the air outlet during smoke exhaust, making it easier to draw away the smoke at a low altitude and fully ensuring the safety of personnel. Attached Figure Description

[0015] Figure 1 A schematic diagram of a smoke and ventilation system coupled with ventilation in a tall space, provided for Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the installation structure of the terminal pipeline system in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of a smoke and ventilation system that couples smoke exhaust and ventilation in a tall space, as provided in Embodiment 2 of this utility model. Figure 4 This is a schematic diagram of the structure of the smoke and air exhaust branch pipe in Embodiment 2 of this utility model; The attached diagram lists the components represented by each number as follows: 1. Ceiling; 2. Beam recess; 3. Usable space; 4. Static pressure box; 5. Smoke exhaust system; 51. Main smoke exhaust duct; 52. Smoke exhaust valve; 6. Ventilation system; 61. Main ventilation duct; 62. Fire damper; 7. Terminal duct system; 71. Main smoke exhaust and ventilation duct; 72. Branch smoke exhaust and ventilation duct; 721. Upper fixed pipe; 722. Telescopic pipe; 723. Lower fixed pipe; 724. Smoke hood; 725. Fixing frame; 726. Ventilation duct frame; 727. Lifting motor; 728. Belt reel; 729. Tightening belt; 73. Air outlet. Detailed Implementation

[0016] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0018] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0019] Example 1 A smoke exhaust and ventilation system 6 that couples smoke exhaust and ventilation in a tall space includes a static pressure box 4, a smoke exhaust system 5, a ventilation system 6, and a terminal duct system 7.

[0020] In this embodiment, a suspended ceiling 1 is installed at the top of the high space, dividing the high space into a beam recess 2 above the suspended ceiling 1 and a usable space 3 below the suspended ceiling 1. A plenum 4, a smoke exhaust system 5, a ventilation system 6, and a terminal duct system 7 are all installed within the beam recess 2. The plenum 4 is flexibly arranged within the beam recess 2, and its dimensions meet the connection requirements of the surrounding main smoke exhaust ducts 51, main ventilation ducts 61, and main smoke and ventilation pipes 71. The main smoke exhaust ducts 51, main ventilation ducts 61, and main smoke and ventilation pipes 71 can be freely connected to the plenum 4 from different directions.

[0021] The smoke exhaust system 5 includes a main smoke exhaust duct 51, on which a smoke exhaust valve 52 is installed. The ventilation system 6 includes a main ventilation duct 61, on which a fire damper 62 is installed. The inlet ends of both the main smoke exhaust duct 51 and the main ventilation duct 61 are connected to a static pressure box 4, and the outlet ends of both are connected to the outdoors. The cross-sectional area of ​​the main ventilation duct 61 is smaller than that of the main smoke exhaust duct 51.

[0022] The terminal piping system 7 includes at least one main exhaust pipe 71, the outlet of which is connected to the static pressure box 4. At least one branch pipe 72 is provided at the bottom of each main exhaust pipe 71, the top of which is connected to the corresponding main exhaust pipe 71, and the bottom of which is connected to the bottom of the ceiling 1 to form an air outlet 73.

[0023] Air vent 73 serves as both an exhaust vent 73 and a smoke exhaust vent. The number of main exhaust and ventilation pipes 71, branch exhaust and ventilation pipes 72, and air vent 73 are calculated and confirmed based on actual project requirements.

[0024] The terminal piping system 7 normally serves as an exhaust duct and in case of fire, it serves as a smoke exhaust duct. Its fire resistance meets the fire resistance limit requirements for smoke exhaust ducts.

[0025] Specifically, under normal circumstances, the smoke exhaust valve 52 is closed and the fire damper 62 is open, and ventilation is completed through the terminal duct system 7, the static pressure box 4, and the exhaust system 6 in sequence. In the event of a fire, the smoke exhaust valve 52 opens, the fire damper 62 closes, and a feedback signal is sent to the fire control center, and smoke is exhausted through the terminal duct system 7, the static pressure box 4, and the smoke exhaust system 5 in sequence.

[0026] This embodiment combines smoke exhaust and ventilation, satisfying both the smoke exhaust and ventilation requirements of large spaces, as well as the building and owner's requirements for the clear height and aesthetics of the ceiling in large spaces.

[0027] Example 2 This embodiment is an improvement upon Embodiment 1. In this embodiment, the smoke and air exhaust branch pipe 72 includes an upper fixed pipe 721, a telescopic pipe 722, a lower fixed pipe 723, a smoke collection hood 724, and a lifting assembly. The top of the upper fixed pipe 721 is connected to the main smoke and air exhaust pipe 71, the top of the telescopic pipe 722 is connected to the bottom of the upper fixed pipe 721, and the top of the lower fixed pipe 723 is connected to the bottom of the telescopic pipe 722. The lifting assembly is used to drive the lower fixed pipe 723 to move up and down.

[0028] In this embodiment, the lifting assembly includes a fixed frame 725, an exhaust duct frame 726, a lifting motor 727, four pulleys 728, and four tensioning belts 729. The fixed frame 725 is installed inside the beam recess 2, and the lifting motor 727, pulleys 728, and tensioning belts 729 are all installed on the fixed frame 725. The exhaust duct frame 726 is installed on the lower fixed pipe 723.

[0029] The output end of the lifting motor 727 is connected to two parallel drive shafts via two belts. Each drive shaft is equipped with two pulleys 728, so that the four pulleys 728 and four tensioning belts 729 are evenly arranged in a square around the lower fixed pipe 723. The pulleys 728 are connected to the exhaust pipe bracket 726 via the corresponding tensioning belts 729.

[0030] In addition, a smoke collection hood 724 is provided at the bottom of the lower fixed pipe 723, forming an air vent 73. The cross-sectional area of ​​the smoke collection hood 724 gradually increases from top to bottom, which can concentrate and collect the smoke into the terminal duct system 7. The structure of the smoke collection hood 724, which is smaller at the top and larger at the bottom, can also serve as a limiting structure, so that when the lifting motor 727 drives the air vent 73 to rise, it can be pressed against the bottom of the suspended ceiling 1 to prevent the air vent 73 from being lifted into the beam recess 2 above the suspended ceiling 1.

[0031] This embodiment is equipped with a retractable smoke and air exhaust branch pipe 72. When exhausting smoke, the smoke and air exhaust branch pipe 72 can be extended to lower the height of the air outlet 73, so as to facilitate the removal of smoke at a low altitude and fully ensure the safety of personnel. When not in use, the smoke and air exhaust branch pipe 72 can be retracted into the beam socket 2 to ensure the aesthetics of the tall space.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high space smoke exhaust and exhaust air coupled smoke exhaust system, characterized in that, This includes a static pressure box, a smoke exhaust system, a ventilation system, and a terminal duct system; The smoke exhaust system includes a main smoke exhaust duct, on which a smoke exhaust valve is installed; the ventilation system includes a main ventilation duct, on which a fire damper is installed; the inlet ends of both the main smoke exhaust duct and the main ventilation duct are connected to the static pressure box, and the outlet ends of both the main smoke exhaust duct and the main ventilation duct are connected to the outside. The terminal piping system includes at least one main exhaust pipe, the outlet of which is connected to the static pressure box, and at least one air outlet is provided on the main exhaust pipe.

2. The smoke exhaust system of claim 1, wherein, Includes a suspended ceiling that divides a tall space into a beam recess above the suspended ceiling and a usable space below the suspended ceiling; the static pressure box, the smoke exhaust system, the ventilation system and the terminal duct system are installed in the beam recess.

3. The smoke exhaust system of claim 2, wherein the smoke exhaust system is coupled to the exhaust system. At least one smoke exhaust branch pipe is provided at the bottom of each of the main smoke exhaust and ventilation pipes. The top of the branch pipe is connected to the corresponding main smoke exhaust and ventilation pipe, and the bottom of the branch pipe is connected to the bottom of the ceiling to form the air outlet.

4. The smoke exhaust system of claim 3, wherein the smoke exhaust system is coupled to the air exhaust system. The smoke exhaust and ventilation branch pipe includes an upper fixed pipe, a telescopic pipe, a lower fixed pipe, and a lifting assembly; the top of the upper fixed pipe is connected to the main smoke exhaust and ventilation pipe, the top of the telescopic pipe is connected to the bottom of the upper fixed pipe, and the top of the lower fixed pipe is connected to the bottom of the telescopic pipe; the lifting assembly is used to drive the lower fixed pipe to move up and down.

5. A smoke and ventilation system coupled with exhaust in a high-ceilinged space according to claim 4, characterized in that, The lifting assembly includes a fixed frame, an exhaust pipe frame, and a lifting motor; the fixed frame is installed in the beam socket, and the lifting motor is installed on the fixed frame; the exhaust pipe frame is installed on the lower fixed pipe; the output end of the lifting motor is connected to at least one pulley via a transmission, and each pulley is connected to the exhaust pipe frame via a tensioning belt.

6. A smoke and ventilation system coupled with exhaust in a high-ceilinged space according to claim 5, characterized in that, The lifting assembly includes four pulleys and four tightening belts, which are evenly arranged in a square around the lower fixed tube.

7. A smoke and ventilation system coupled with exhaust in a high-ceilinged space according to claim 4, characterized in that, A smoke collection hood is provided at the bottom of the lower fixed pipe, and the cross-sectional area of ​​the smoke collection hood gradually increases from top to bottom.

8. A smoke and ventilation system coupled with exhaust in a high-ceilinged space according to claim 1, characterized in that, The cross-sectional area of ​​the main exhaust duct is smaller than that of the main smoke exhaust duct.

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