Telescopic smoke exhaust valve for medical buildings
By designing a sliding fit structure between the outer and inner shells of the retractable smoke exhaust valve, combined with locking components and scale markings, the spatial contradictions of traditional smoke exhaust valves in medical buildings are resolved, enabling flexible adjustment and precise positioning, meeting fire safety regulations and improving spatial comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA MCC22 GROUP CORP LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-07
AI Technical Summary
When traditional smoke exhaust valves are installed in medical buildings, they face challenges such as limited ceiling space and inability to meet regulatory requirements, resulting in a sense of spatial oppression or visual defects, especially in areas with strict requirements for floor height, such as CT rooms and operating rooms, which affect the comfort of the building space.
A retractable smoke exhaust valve is designed. Through the sliding fit structure between the outer shell and the inner shell, combined with locking components and scale markings, the installation height of the smoke exhaust valve can be flexibly adjusted and precisely positioned to adapt to the differences in ceiling height in different areas, ensuring airtightness and structural stability.
It achieves a balance between standardized installation in limited spaces and the quality of building space, avoiding the spatial oppression and visual defects caused by traditional smoke exhaust valves, while meeting fire protection requirements and is suitable for medical spaces with dense pipelines.
Smart Images
Figure CN224470396U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smoke exhaust technology, specifically a retractable smoke exhaust valve for medical buildings. Background Technology
[0002] In contemporary medical building design, fire protection and smoke extraction systems are crucial facilities for ensuring personnel safety. Their design and installation must simultaneously meet the mandatory specifications of the "Technical Standard for Smoke Control and Exhaust Systems in Buildings" and the specific needs of medical spaces. With the increasing complexity of medical processes, the density of cross-laying of various pipeline systems within buildings (including medical gases, cleanroom air conditioning, electrical cable trays, etc.) has significantly increased, leading to increasingly strained ceiling space. This spatial contradiction is particularly prominent in densely populated corridor areas. Because the height of smoke exhaust valves in the same project is generally consistent, the installation of traditional fixed-height smoke exhaust valves often faces a dilemma: if installed according to the factory height, the overall ceiling height often needs to be lowered, which will create a feeling of oppression in the medical environment; if the original ceiling height is maintained, the smoke exhaust valves may be exposed or parts of the ceiling may sink, affecting both visual aesthetics and potentially having a negative psychological impact on patients.
[0003] Especially in medical functional areas with strict requirements on floor height, such as CT rooms and operating rooms, traditional solutions often sacrifice the comfort of the building space to achieve compliance. To address this technical challenge, there is an urgent need to develop a new type of smoke exhaust valve structure that can meet installation specifications within limited spaces while maintaining the quality of the building space. Utility Model Content
[0004] The present invention aims to solve the above problems, thereby providing a retractable smoke exhaust valve for medical buildings that allows for flexible adjustment of installation height.
[0005] The technical solution adopted by this utility model to solve the aforementioned problem is:
[0006] A retractable smoke exhaust valve for medical buildings includes a rectangular housing and a blade assembly inside it. The housing includes an outer shell and an inner shell. The inner shell is connected to a smoke exhaust duct via a flange. The blade assembly is fixedly connected in the inner shell. The outer shell is slidably fitted on the outside of the inner shell. A locking component is provided between the outer shell and the inner shell.
[0007] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:
[0008] The sliding fit structure between the outer and inner shells enables stepless adjustment of the smoke exhaust valve's installation height, effectively resolving the conflict between compliant installation and spatial quality under the limited ceiling space conditions of medical buildings. Compared to traditional fixed-height smoke exhaust valves, this design allows construction personnel to flexibly adjust the extension length of the outer shell according to the on-site pipe intersections, adapting to differences in ceiling heights in different areas and avoiding the spatial oppression caused by overall ceiling reduction or the visual defects caused by partial ceiling sagging. The locking component ensures the structural stability after adjustment. This telescopic structure is particularly suitable for medical spaces sensitive to ceiling height, such as CT rooms and operating rooms, meeting regulatory requirements while preserving the integrity of the architectural design and the comfort of the patient environment.
[0009] As a preferred embodiment, a further technical solution of this utility model is:
[0010] Furthermore, the locking assembly includes several fixing bolts, guide strips are provided on both sides of the inner housing along the longitudinal direction, and guide grooves are provided on the inner side of the outer housing to cooperate with the guide strips. Adjustment elongated holes are respectively opened on both sides of the outer housing along the longitudinal direction, and through holes are opened on the inner housing corresponding to the adjustment elongated holes. The fixing bolts pass through the through holes and the corresponding adjustment elongated holes in sequence. Locking nuts are fitted on the fixing bolts and located on the outer side of the outer housing, abutting against the outer housing. The cooperation between the fixing bolts and the adjustment elongated holes achieves precise positioning after height adjustment. The sliding design of the guide strips and guide grooves effectively prevents the housing from shifting, making it particularly suitable for installation environments in medical spaces with dense pipelines.
[0011] Furthermore, the locking nut is a wing nut, which is designed for easy hand tightening. While ensuring structural stability, it also improves the convenience of installation and maintenance, making it particularly suitable for construction conditions in narrow spaces within the ceiling of medical buildings.
[0012] Furthermore, a scale value is provided on the outer casing and outside the adjustment orifice. The scale value marking next to the adjustment orifice on the outer casing provides installers with an intuitive length reference, which helps to achieve standardized adjustment of the height of the smoke exhaust valve in different areas and reduces repeated adjustments caused by visual error.
[0013] Furthermore, sealant is filled between the outer shell and the inner shell. After the position of the outer shell is adjusted, sealant is filled between the outer shell and the inner shell to ensure the airtightness of the smoke exhaust system after adjustment. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the present utility model;
[0015] Figure 2 This is a side view of an embodiment of the present utility model.
[0016] Figure 3This is a schematic diagram of the structure of the fixing bolt and locking nut in an embodiment of this utility model;
[0017] The components are marked as follows: outer shell 1, inner shell 2, blade assembly 3, fixing bolt 4, adjusting elongated hole 5, and locking nut 6. Detailed Implementation
[0018] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.
[0019] A retractable smoke exhaust valve for medical buildings includes a rectangular housing and an internal blade assembly 3. The housing includes an outer shell 1 and an inner shell 2. The outer shell 1 is made of 304 stainless steel, and the inner shell 2 is made of galvanized steel plate. The inner shell 2 is connected to a smoke exhaust duct via a flange. The blade assembly 3 is fixedly connected in the inner shell 2. The blade assembly 3 is a conventional structure in the prior art, including a fixing frame fixed in the inner shell 2. A drive motor is integrated on one side of the fixing frame. The output end of the drive motor is connected to an adjustable guide fan blade assembly on the other side of the fixing frame via a coupling. The guide fan blade assembly is made of 310S stainless steel, and the tilt angle adjustment range of the guide fan blade assembly is 0-90 degrees. The opening degree is controlled by the drive motor. The outer shell 1 is slidably fitted onto the outside of the inner shell 2. A locking component is provided between the outer shell 1 and the inner shell 2. A smoke exhaust port is connected to the bottom of the outer shell 1. A normally closed fire damper is provided at the smoke exhaust port, which is opened by an electronic control device or a manual lever in case of fire.
[0020] Furthermore, the locking assembly includes several fixing bolts 4. Guide strips are provided on both sides of the inner housing 2 along the longitudinal direction. The inner side of the outer housing 1 is provided with a guide groove that cooperates with the guide strips. Adjustment elongated holes 5 are respectively opened on both sides of the outer housing 1 along the longitudinal direction. Through holes are opened on the inner housing 2 that are opposite to the adjustment elongated holes 5. The fixing bolts 4 pass through the through holes and the corresponding adjustment elongated holes 5 in sequence. Two sets of adjustment elongated holes 5 and through holes are respectively set on both sides of the housing. Locking nuts 6 that abut against the outer housing 1 are fitted on the fixing bolts 4 and located on the outer side of the outer housing 1. The cooperation between the fixing bolts 4 and the adjustment elongated holes 5 realizes the precise positioning after height adjustment. The sliding design of the guide strips and guide grooves effectively prevents the housing from shifting, which is particularly suitable for the installation environment of medical spaces with dense pipelines.
[0021] Furthermore, the locking nut 6 is a wing nut. The design of the wing nut makes it easy to tighten by hand, which improves the convenience of installation and maintenance while ensuring structural stability. It is especially suitable for the construction conditions in the narrow space inside the ceiling of medical buildings.
[0022] Furthermore, a scale value is provided on the outer casing 1 and outside the adjustment elongated hole 5, with a scale range of 0-20cm. The scale value marking next to the adjustment elongated hole 5 on the outer casing 1 provides an intuitive length reference for installers, which helps to achieve standardized adjustment of the height of the smoke exhaust valve in different areas and reduce repeated adjustments caused by visual error.
[0023] Furthermore, a sealant is filled between the outer shell 1 and the inner shell 2. The sealant is a high-temperature resistant silicone sealant with a temperature resistance of ≥300℃. After the position of the outer shell 1 is adjusted, the sealant is filled between the outer shell 1 and the inner shell 2 to ensure the airtightness of the smoke exhaust system after adjustment.
[0024] When installed in height-sensitive areas such as CT rooms or operating rooms, the construction personnel first fix the inner shell 2 to the smoke exhaust duct via a flange. Then, based on the complex pipe intersections inside the ceiling, they slide the outer shell 1 along the guide groove to the required height by observing the scale value next to the adjustment hole 5 on the outer shell 1. At this time, the cooperation between the guide strip of the inner shell 2 and the guide groove of the outer shell 1 can effectively prevent displacement. To address the problem of the ceiling being lowered or partially sunken due to the fixed height of traditional smoke exhaust valves, this device uses the wing nut to loosen and tighten the fixing bolt 4 in the adjustment hole 5 to achieve stepless adjustment of the extension length of the outer shell 1, allowing the smoke exhaust valve to accurately adapt to the differences in ceiling height in different areas. After the height adjustment is completed, the wing nut can be tightened by hand to quickly lock it. Finally, sealant is filled into the gap between the outer shell 1 and the inner shell 2. This not only solves the spatial oppression and visual defects caused by traditional solutions, but also ensures the airtightness requirements of the smoke exhaust system after adjustment. The whole process fully meets the dual requirements of medical buildings for spatial quality and compliance.
[0025] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.
Claims
1. A retractable smoke exhaust valve for medical buildings, comprising a rectangular housing and an internal blade assembly, characterized in that: The housing includes an outer shell and an inner shell. The inner shell is connected to the exhaust duct via a flange. The blade assembly is fixedly connected in the inner shell. The outer shell is slidably fitted onto the outside of the inner shell. A locking assembly is provided between the outer shell and the inner shell.
2. The retractable smoke exhaust valve for medical buildings according to claim 1, characterized in that: The locking assembly includes several fixing bolts. Guide strips are provided on both sides of the inner housing along the longitudinal direction. A guide groove is provided on the inner side of the outer housing to cooperate with the guide strips. Adjustment elongated holes are provided on both sides of the outer housing along the longitudinal direction. Through holes are provided on the inner housing opposite to the adjustment elongated holes. The fixing bolts pass through the through holes and the corresponding adjustment elongated holes in sequence. Locking nuts that abut against the outer housing are fitted on the fixing bolts and located on the outer side of the outer housing.
3. The retractable smoke exhaust valve for medical buildings according to claim 1, characterized in that: The locking nut is a wing nut.
4. The retractable smoke exhaust valve for medical buildings according to claim 1, characterized in that: The outer casing has a scale value located on the outside of the adjustment hole.
5. The retractable smoke exhaust valve for medical buildings according to claim 1, characterized in that: The space between the outer shell and the inner shell is filled with sealant.