Ventilation switching box
By designing a ventilation switching box that utilizes the space of building beams and caves, the small operating space of the existing ventilation and smoke exhaust system in complex pipelines or narrow spaces is solved, and a ventilation and smoke exhaust solution that does not occupy building plane space is achieved. The layout of fire shared pipelines.
Patent Information
- Application Number
- CN202323573332.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The existing ventilation and smoke exhaust system has a small operating space under complex pipelines or narrow spaces, and it is difficult to effectively utilize the building beam and cave space, resulting in tight installation space and difficult construction operations.
Design a ventilation switching box, which is transformed by building beams and holes, and is fixed in the space between two adjacent pipes or beams on the top of the basement through the first and second fixed support rods, including smoke-proof and fire-proof valves and smoke exhaust valves and smoke exhaust fire-proof valves realize automatic valve opening and closing of valves to meet ventilation needs under different circumstances.
It solves the problem of small operating space in complex pipelines or narrow spaces, uses building beams and nest space for transformation, does not occupy building plane space, and optimizes the layout of fire shared pipelines to make it more streamlined and efficient.
Smart Images
Figure CN222459723U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a ventilation switching box and belongs to the field of air and smoke exhaust systems. Background Art
[0002] The popularity of new energy household cars has led to an increasing number of basement charging pile garages. In such basements with charging piles, in order to reduce the area occupied by the machine room and increase the utilization rate of ventilation and smoke exhaust equipment, a design scheme of two charging parking space fire protection units sharing the exhaust and smoke exhaust system is often used, as shown in the attached figure of the specification. Figure 1 As shown, each branch system requires a double-pipe valve switching part. During normal ventilation, that is, when the ventilation temperature does not exceed 70°C, the smoke and fire dampers on the two branch pipes are opened, and the convex pipe is a combination of smoke exhaust valve and smoke exhaust fire damper, in which the smoke exhaust is in the normally closed state and the smoke exhaust fire damper is in the normally open mode. When exhausting smoke, the smoke will automatically melt at 280°C. In case of fire, the smoke and fire dampers FYF of the two branch pipes are usually closed, and the smoke exhaust valve of the burning unit is opened to exhaust the fire unit.
[0003] This solution occupies a relatively large space, which increases the clear height problem of various professional pipe complexes in the basement with complex pipelines. In addition, the installation space is tight, the construction operation surface is small, and the fireproof package installation is often not up to standard.
[0004] Therefore, the utility model provides a ventilation switching box which utilizes the space of the building beam cavity for conversion and has a simple circuit. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide a ventilation switching box which utilizes the space of the building beam cavity for conversion and has a simple circuit.
[0006] The utility model is achieved in this way:
[0007] A ventilation switching box includes a ventilation pipe for ventilation and smoke exhaust;
[0008] A switch box and a first fixed support rod, wherein the switch box is located in the space between two adjacent pipes or beams at the top of the basement, and the top surface of the switch box is mounted on the floor slab through a plurality of first fixed support rods;
[0009] The second fixed support rod, both ends of the bottom of the switching box are connected with ventilation pipes, and the end of the ventilation pipe close to the connection is fixed to the floor slab through the second fixed support rod.
[0010] As a further improvement, the switching box comprises a box body and a first air duct, the first air duct is located at the bottom of the box body, and both ends of the first air duct pass through the box body and are connected to the ventilation pipe;
[0011] The smoke and fire damper is installed in the first air duct in the middle of the box;
[0012] A smoke exhaust damper and a smoke exhaust fire damper, wherein the smoke exhaust fire damper and the smoke exhaust damper are sequentially installed above the smoke fire damper through a first partition;
[0013] The second air duct is located above the first air duct and is connected to the first air duct at the beginning and the end.
[0014] As a further improvement, the first and last ends of the first air duct are an air inlet and an air outlet respectively.
[0015] As a further improvement, the first air duct and the ventilation pipe are connected via a flange.
[0016] As a further improvement, a filling block is provided at the diagonal position above the box body corresponding to the connection between the second air duct and the first air duct, so that the inner wall of the second air duct forms a smooth curved surface.
[0017] As a further improvement, a plurality of guide vanes are provided at the end of the second air duct close to the smoke exhaust valve or the smoke exhaust fire damper.
[0018] As a further improvement, the guide vane and the curved surface of the inner wall of the second air duct are parallel to each other.
[0019] As a further improvement, a manual smoke exhaust valve control mechanism is provided next to the smoke exhaust valve.
[0020] The beneficial effects of the utility model are:
[0021] ① Compared with the traditional design of adding a convex pipe, the utility model adopts a smoke and fire damper, a smoke exhaust valve and a smoke exhaust fire damper to form a switching box, which can be directly fixed in the space between two adjacent pipes or beams on the top of the basement through the first fixed support rod and the second fixed support rod, solving the problem of small operating space under complex pipelines or narrow spaces. It can also use the space of the building beam nest for conversion, does not occupy the plane space of the building, is conducive to the layout of other professional pipes, and optimizes and simplifies the common pipelines for fires in normal times.
[0022] ② The utility model opens and closes different valves according to different situations and they are linked to each other. The first air duct is the air duct used in normal times, and the smoke temperature does not exceed 70°C. In a fire state, the second air duct is opened, which is also the fire air inlet duct. If the smoke temperature exceeds 280°C, the smoke exhaust fire damper will be automatically closed and the opened smoke exhaust valve will be opened. If it does not exceed, the smoke exhaust valve and the smoke exhaust fire damper will be in the open state. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a schematic diagram of the principle of a traditional exhaust and smoke exhaust system provided by the background technology of the present utility model.
[0025] Figure 2 This utility model Figure 2 Schematic diagram of the principles of smoke exhaust dampers and smoke exhaust fire dampers.
[0026] Figure 3 It is a structural schematic diagram of a ventilation switching box provided by an embodiment of the utility model.
[0027] Figure 4 The utility model provides a top view of a ventilation switching box according to an embodiment of the utility model.
[0028] Figure 5 The utility model provides a schematic diagram of the normal ventilation state of a ventilation switching box after installation.
[0029] Figure 6 The utility model provides a schematic diagram of the fire ventilation state after the ventilation switching box is installed. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0031] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0032] Reference Figure 3-Figure 6 As shown, the utility model provides a specific implementation method for a ventilation switching box, including a ventilation pipe 10 for ventilation and smoke exhaust;
[0033] A switch box 20 and a first fixed support rod 30, wherein the switch box 20 is located in the space between two adjacent pipes or beams at the top of the basement, and the top surface of the switch box 20 is mounted on the floor slab through a plurality of first fixed support rods 30;
[0034] The second fixed support rod 40 , both ends of the bottom of the switch box 20 are connected with the ventilation pipe 10 , and the end of the ventilation pipe 10 close to the connection is fixed to the floor slab through the second fixed support rod 40 .
[0035] like Figure 5 and Figure 6 As shown, compared with the traditional design of adding convex pipes, the utility model adopts a switch box 20 that integrates smoke and fire dampers 203, smoke exhaust valves 204 and smoke exhaust fire dampers 205, which can be directly fixed in the space between two adjacent pipes or beams on the top of the basement through the first fixed support rod 30 and the second fixed support rod 40, solving the problem of small operating space under complex pipelines or narrow spaces, and can also use the space of the building beam nest for conversion, without occupying the plane space of the building, which is conducive to the layout of other professional pipes, so that the pipelines shared by fires are optimized and streamlined. Specifically:
[0036] The switch box 20 comprises a box body 201 and a first air duct 202. The first air duct 202 is located at the bottom of the box body 201. Both ends of the first air duct 202 pass through the box body 201 and are connected to the ventilation pipe 10.
[0037] The smoke and fire damper 203 is installed in the first air duct 202 and is located in the middle of the box 201;
[0038] A second air duct 211, wherein the second air duct 211 is located above the first air duct 202 and is connected to a head end and a tail end of the first air duct 202;
[0039] The smoke exhaust valve 204 and the smoke exhaust fire damper 205 are used to control the opening or closing of the second air duct 211. The smoke exhaust fire damper 205 and the smoke exhaust valve 204 are sequentially installed above the smoke and fire damper 203 through the first partition plate 206;
[0040] Furthermore, the first and last ends of the first air duct 202 are an air inlet 221 and an air outlet 222 respectively.
[0041] During specific use, the first air duct 202 is the air duct for normal use, and the smoke temperature does not exceed 70°C. The second air duct 211 is also the fire air inlet duct, and is provided with a smoke exhaust fire damper 205 that automatically closes when the smoke temperature exceeds 280°C and a smoke exhaust valve 204 that opens.
[0042] In normal state, the smoke and fire damper 203 on the first air duct 202 is always open as long as the ventilation temperature does not exceed 70°C, the smoke exhaust valve 204 on the fire air inlet duct is always closed, and the smoke and fire damper 205 is always open as long as the temperature does not exceed 280°C; that is, in normal state, the first air duct 202 remains open and the second air duct 211 remains closed;
[0043] In a fire state, the smoke and fire damper 203 on the first air duct 202 is closed when the ventilation temperature exceeds 70°C, the smoke exhaust valve 204 on the second air duct 211 is opened, and the smoke exhaust and fire damper 205 is normally open as long as the temperature does not exceed 280°C, and is closed when the smoke temperature reaches 280°C. In a fire state, the first air duct 202 remains closed and the second air duct 211 remains open.
[0044] As a possible specific implementation of the utility model, the first air duct 202 and the ventilation pipe 10 are connected by a flange. The flange adopts the principle of surface sealing, which can effectively ensure that there will be no air leakage at the connection and can still operate stably under high temperature or high pressure working conditions.
[0045] Furthermore, a filling block 207 is provided at the diagonal position above the box 201 corresponding to the connection between the second air duct 211 and the first air duct 202, so that the inner wall of the second air duct 211 forms a smooth curved surface. The smooth curved surface allows smooth smoke flow and is easier to clear. The filling block 207 is a box filling structure and is made of non-combustible materials, including but not limited to rock wool.
[0046] As a possible specific implementation of the present invention, a plurality of guide vanes 208 are provided at the end of the second air duct 211 close to the smoke exhaust valve 204 or the smoke exhaust fire damper 205 to guide the smoke to circulate.
[0047] Furthermore, the guide vane 208 and the inner wall curved surface of the second air duct 211 are parallel to each other, so that no dead angle of smoke flow is generated, and smoke can be smoothly guided to flow toward the smoke exhaust fire damper 205 .
[0048] Furthermore, a manual smoke exhaust valve control mechanism 209 is provided next to the smoke exhaust valve 204. The manual smoke exhaust valve control mechanism 209 is a smoke exhaust valve control device located on the valve body of the smoke exhaust valve 204. When a fire occurs or smoke exhaust is required, the smoke exhaust valve can be opened manually or electrically to perform smoke exhaust.
[0049] As a possible specific implementation of the utility model, an inspection door 210 is provided on the box 201 corresponding to the smoke and fire damper 203, the smoke exhaust valve 204 and the smoke and fire damper 205 to facilitate inspection.
[0050] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A ventilation switching box, characterized in that: It includes a ventilation pipe (10) for ventilation and smoke exhaust; A switch box (20) and a first fixed support rod (30), wherein the switch box (20) is located in a space between two adjacent pipes or beams at the top of the basement, and the top surface of the switch box (20) is mounted on the floor slab via a plurality of first fixed support rods (30); A second fixed support rod (40), both ends of the bottom of the switch box (20) are connected with ventilation pipes (10), and the end of the ventilation pipe (10) close to the connection is fixed to the floor slab through the second fixed support rod (40).
2. The ventilation switching box according to claim 1, characterized in that: The switch box (20) comprises a box body (201) and a first air duct (202), wherein the first air duct (202) is located at the bottom of the box body (201), and the first air duct (202) passes through the box body (201) at both ends and is connected to the ventilation pipe (10); The smoke and fire damper (203) is installed in the first air duct (202) and is located in the middle of the box (201); A smoke exhaust damper (204) and a smoke exhaust fire damper (205), wherein the smoke exhaust fire damper (205) and the smoke exhaust damper (204) are sequentially installed above the smoke and fire damper (203) via a first partition plate (206); A second air duct (211), wherein the second air duct (211) is located above the first air duct (202) and is connected to the head end and the tail end of the first air duct (202).
3. The ventilation switching box according to claim 2, characterized in that: The first and last ends of the first air duct (202) are an air inlet (221) and an air outlet (222), respectively.
4. The ventilation switching box according to claim 2, characterized in that: The first air duct (202) and the ventilation pipe (10) are connected via a flange.
5. The ventilation switching box according to claim 2, characterized in that: A filling block (207) is provided at the diagonal position above the box body (201) corresponding to the connection between the second air duct (211) and the first air duct (202), so that the inner wall of the second air duct (211) forms a smooth curved surface.
6. The ventilation switching box according to claim 5, characterized in that: The end of the second air duct (211) close to the smoke exhaust valve (204) or the smoke exhaust fire damper (205) is provided with a plurality of guide vanes (208).
7. The ventilation switching box according to claim 6, characterized in that: The guide blade (208) and the inner wall curved surface of the second air duct (211) are parallel to each other.
8. The ventilation switching box according to claim 2, characterized in that: A smoke exhaust valve manual control mechanism (209) is provided next to the smoke exhaust valve (204).