Quick release structure for return air inlet of operating room

Abstract

The utility model relates to the technical field of air return, and particularly discloses a quick release structure for an air return port of an operating room. Comprising an installation keel, an installation outer frame and an installation inner frame, the installation outer frame and the installation inner frame are arranged in a penetrating mode, and the installation inner frame is located in the installation outer frame and provided with ventilation openings and ventilation blades. The installation outer frame is connected with the keel through a buckle, a magnetic part is arranged on the inner side of the installation inner frame, and a filter element is arranged on the inner side of the ventilation opening and detachably installed through a magnetic face. The filter element is simple in structure and easy to disassemble and replace, maintenance cost is reduced, and ventilation system operation efficiency is improved. The installation outer frame is connected in a buckling mode and fixed to the keel, the surface is smooth and flat, cleaning is easy, and attractiveness is achieved. And the air quality of the operating room is ensured, the stability is high, and falling is avoided. The number and positions of the return air inlets are adjusted according to requirements to meet different operation requirements. The surface is smooth, bacteria and dust are prevented from being accumulated, and operating room environments are met.

Description

Technical Field

[0001] This utility model relates to the field of return air technology, and in particular to a quick-release structure for the return air vent of an operating room. Background Technology

[0002] In traditional operating room designs, the construction of return air vents is typically prioritized for disassembly, thus widely employing components such as screws and hinges for connection. The design of these components exposes them on the external surface of the vent, significantly impacting the overall aesthetics and integration of the surface. While this facilitates later maintenance and cleaning, it appears somewhat jarring and lacks the clean and minimalist style sought after in modern operating rooms. Furthermore, in traditional operating room return air vents, the blades and frame are usually welded together as an inseparable unit, meaning the airflow direction of the blades is predetermined at the factory. While this design has structural rationale, it introduces limitations in practical use, especially when adjusting airflow direction and ventilation rate according to different surgical environments. Due to the fixed direction of the blades, the airflow distribution within the operating room may not meet the needs of all surgical scenarios, potentially affecting not only air quality but also the surgeon's procedures and the patient's recovery environment. Therefore, this design, to some extent, limits the flexibility of operating room environmental control and cannot adapt to ever-changing medical needs and higher operating room standards.

[0003] The patent “A Simple Return Air Inlet” (publication number CN215062782U, hereinafter referred to as prior art 1) discloses a return air inlet structure that is easy to disassemble.

[0004] The main technical principle of prior art 1 is to design a simple return air vent that allows for easy removal of the mesh panel for cleaning. Prior art 1 features a simple return air vent characterized by easy removal of the mesh panel and filter for cleaning. Prior art 1 includes a frame, a mesh panel, and a filter. The frame is fixedly wrapped around all four sides, the mesh panel has through holes and a latch design for fixing it within the frame, and the filter is fixed to the mesh panel. The return air vent in prior art 1 uses the latch and latch design, along with springs and guide holes, to achieve the fixing and removal of the mesh panel. Simultaneously, the design of elastic components and limiting hooks enhances the ease of disassembly. The frame consists of a clamping plate, longitudinal plates, and transverse plates, which are fixed together by rivets. The outer sides of the longitudinal and transverse plates are provided with lifting edges.

[0005] While existing technology 1 achieves a relatively simple detachable screen design through a simple locking mechanism and latch, it still doesn't simplify the disassembly of the overall return air vent structure. Existing technology 1 only provides a simple detachable screen, but it's not just the screen that needs to be disassembled and cleaned; more importantly, the filter element needs to be replaced or cleaned. Utility Model Content

[0006] In view of this, this utility model embodiment provides a quick-release structure for operating room return air inlets to solve the problem in the prior art that the filter element and installation components in the return air inlet structure cannot be quickly disassembled.

[0007] This utility model embodiment provides a quick-release structure for an operating room return air vent, including a mounting frame, an outer mounting frame, and an inner mounting frame; both the outer and inner mounting frames are through-type; the inner mounting frame is located within the outer mounting frame; the through-type portion of the inner mounting frame is a ventilation opening; the ventilation opening is provided with a plurality of ventilation blades at even intervals; the outer mounting frame and the mounting frame are connected by snap-fit; magnetic suction components are provided around the inner perimeter of the through-type portion of the inner mounting frame; a filter element is provided inside the ventilation opening of the inner mounting frame; the filter element is surrounded by magnetic suction surfaces that cooperate with the magnetic suction components for installation; the filter element is detachably installed to the inner side of the ventilation opening of the inner mounting frame via the magnetic suction surfaces.

[0008] Preferably, the mounting keel is made of several square steel and channel steel spliced ​​together; the mounting keel is set at a preset installation position and fixed to the installation position by the cooperation of bolts and nuts.

[0009] Preferably, the mounting frame is composed of two short outer frame plates and two long outer frame plates spliced ​​together; the two short outer frame plates and the two long outer frame plates are installed in an alternating manner; the joints of the short outer frame plates and the long outer frame plates are connected by outer frame connectors.

[0010] Preferably, the ventilation opening of the mounting frame is provided with a number of fan blade clamps at even intervals; each fan blade clamp is provided with a buckle that matches the number of ventilation blades.

[0011] Preferably, the ventilation blades are detachably connected by several snaps located on the same horizontal line on each of the blade plates.

[0012] Preferably, the ventilation blade includes a snap-fit ​​end and an air outlet end; the snap-fit ​​end has a circular cross-section; the buckle has an "eight"-shaped inlet and an inner cavity; the inner cavity is adapted to the snap-fit ​​end; the ventilation blade rotates based on the blade clamping plate through the snap-fit ​​end and the inner cavity.

[0013] Preferably, both the snap-fit ​​end and the air outlet end are internally connected; the connection between the snap-fit ​​end and the air outlet end is a solid structure.

[0014] Preferably, the filter element is a HEPA filter element, an activated carbon filter element, an electrostatic filter element, or an antibacterial filter element.

[0015] Preferably, the mounting inner frame is composed of two inner frame short plates and two inner frame long plates spliced ​​together; the two inner frame short plates and the two inner frame long plates are installed in an alternating manner; the joints of the inner frame short plates and inner frame long plates are connected by outer frame connectors.

[0016] Preferably, the inner side of the mounting frame is also provided with rotating clips around its perimeter; the filter element can be tightened or loosened by rotating the rotating clips.

[0017] The quick-release structure for the operating room return air vent provided by this utility model has the following beneficial effects:

[0018] This invention utilizes a magnetic filter design, significantly reducing time and labor costs during the maintenance of the operating room ventilation system. Filter replacement is more efficient, ensuring optimal air quality within the operating room. The magnetic connection between the filter and the mounting frame guarantees filter stability, preventing detachment or displacement even under high-speed airflow. The snap-on connection of the new return air vents makes installation and disassembly exceptionally simple. Medical institutions can adjust the number and location of return air vents as needed to accommodate surgeries of varying sizes. This connection method also facilitates later maintenance and reduces overall maintenance costs. Furthermore, the smooth and flat surface of the new return air vents not only facilitates cleaning but also prevents the accumulation of bacteria and dust. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0020] Figure 1 This is an exploded view of a quick-release structure for an operating room return air vent.

[0021] Figure 2 This is a front view of a quick-release structure for an operating room return air vent.

[0022] Figure 3 This is a rear view of a quick-release structure for an operating room return air vent.

[0023] Figure 4 This is a schematic diagram of the inner frame structure of a quick-release structure for operating room return air vents.

[0024] Figure 5 This is a partial structural diagram of a quick-release structure for an operating room return air vent.

[0025] Figure 6 yes Figure 5 A schematic diagram of the assembly structure;

[0026] Parts and component numbers in the diagram:

[0027] 200-Installation frame, 210-Ventilation opening, 220-Ventilation blade, 221-Snap-fit ​​end, 222-Air outlet end, 230-Outer frame short plate, 240-Outer frame long plate, 250-Outer frame connector, 260-Fan blade clamping plate, 261-Snap-fit, 262-Inlet, 263-Inner cavity;

[0028] 300 - Install inner frame, 310 - Inner frame short plate, 320 - Inner frame long plate, 330 - Rotating fastener;

[0029] 400 - Filter element, 410 - Magnetic surface. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0031] Example 1

[0032] Please see Figure 1This utility model provides a quick-release structure for an operating room return air vent. In traditional operating room return air systems, screws, hinges, and other components are typically used to connect the various parts for easy disassembly and maintenance. However, these screws and hinges are exposed on the surface of the return air vent, which undoubtedly compromises its cleanliness and overall appearance. Furthermore, in traditional designs, the blades and frame of the operating room return air vent are usually a single unit, and the airflow direction is predetermined at the factory, which limits the adjustment of airflow direction and the change of ventilation rate.

[0033] This new return air vent uses a snap-on connection to the keel, allowing for quick and secure attachment. Furthermore, the surface remains smooth and flat, which is not only aesthetically pleasing but also facilitates cleaning and maintenance. In addition, the new return air vent features an independent filter element 400 structure, which can be quickly and easily secured magnetically, greatly simplifying the removal and replacement of the filter element 400. These innovative designs make the maintenance of the operating room's return air vents more convenient, while also improving its surface cleanliness and overall appearance, ensuring the cleanliness and hygiene of the operating room.

[0034] Please see Figure 1 This utility model provides a quick-release structure for an operating room return air vent, comprising a mounting frame, an outer mounting frame 200, and an inner mounting frame 300; both the outer mounting frame 200 and the inner mounting frame 300 are through-type; the inner mounting frame 300 is located within the outer mounting frame 200. The characteristic of this structure is that both the outer mounting frame 200 and the inner mounting frame 300 are permeable, thus improving the overall ventilation performance. In this arrangement, the inner mounting frame 300 is placed inside the outer mounting frame 200, forming an internal and external combined layout, ensuring structural stability while improving ease of assembly and disassembly. Simultaneously, this quick-release structure significantly improves the cleanliness of the operating room interior, helping to reduce bacterial growth and ensuring the safety and hygiene of the operating room.

[0035] Furthermore, the through portion of the inner mounting frame 300 is a ventilation opening 210; the ventilation opening 210 is evenly provided with a plurality of ventilation blades 220 at intervals; the outer mounting frame 200 is connected to the mounting keel via snap fasteners 261; the inner mounting frame 300 has a through portion, which is configured as a ventilation opening 210 to facilitate air circulation. On this ventilation opening 210, a plurality of ventilation blades 220 are evenly installed at certain intervals, which help regulate the direction of airflow and maintain fresh indoor air. In addition, the outer mounting frame 200 and the mounting keel are connected via snap fasteners 261, a simple and convenient connection method that ensures a firm connection and makes the entire structure more stable.

[0036] Please see Figure 1 The inner frame 300 has a through section with magnetic components around its inner perimeter. A filter element 400 is located inside the ventilation opening 210 of the inner frame 300. The filter element 400 has a magnetic surface 410 around its perimeter that cooperates with the magnetic components. The filter element 400 is detachably installed to the inner perimeter of the ventilation opening 210 of the inner frame 300 via the magnetic surface 410. The inner frame 300 has a through section with magnetic components around its perimeter. These magnetic components provide a convenient and secure connection, allowing the inner frame 300 to be firmly fixed in its position. Furthermore, a filter element 400 is specifically provided inside the ventilation opening 210 of the inner frame 300. This filter element 400 filters the air entering the inner frame 300 to maintain the cleanliness of the interior. The filter element 400 has a ring of magnetic surfaces 410 around its perimeter that cooperate with the magnetic components. This design allows the filter element 400 to be detachably installed on the inside of the ventilation opening 210 of the mounting frame 300 via the magnetic surface 410. This detachable installation method not only simplifies the installation and replacement of the filter element 400, but also makes the overall structure of the mounting frame 300 more compact, saving space. It ensures both the ventilation effect of the mounting frame 300 and the stability and ease of use of its structure.

[0037] The mounting keel is constructed from several square steel and channel steel sections spliced ​​together. It is positioned at a predetermined installation location and secured thereby using bolts and nuts. The mounting keel is a frame structure assembled from multiple square steel and channel steel sections. It is placed in a pre-determined specific installation location and firmly fixed there using a combination of bolts and nuts. This ensures the stability of the keel structure, enabling it to withstand loads. Through this fixing method, the mounting keel provides a stable support platform for the installation of various return air vent structures.

[0038] Please see Figure 1 The mounting frame 200 is composed of two short outer frame plates 230 and two long outer frame plates 240 spliced ​​together; the two short outer frame plates 230 and the two long outer frame plates 240 are installed in an alternating manner; the joints of the short outer frame plates 230 and the long outer frame plates 240 are connected by outer frame connectors 250.

[0039] The mounting frame 200 is composed of two types of panels of different lengths, including two shorter panels and two longer panels. These panels are spliced ​​together in a specific order and manner to form a complete frame structure. During the splicing process, the two shorter panels 230 and the two longer panels 240 of the outer frame are staggered, that is, one short panel and one long panel are interleaved and combined to form a staggered arrangement. This staggered installation not only increases the stability of the outer frame, but also gives it better load-bearing capacity and wind resistance.

[0040] Please see Figure 2 During the assembly process, the outer frame short plate 230 and outer frame long plate 240 are connected at their joints by outer frame connectors 250, which firmly fix the short and long plates together, ensuring the stability and reliability of the entire outer frame. Through this connection method, the outer frame short plate 230 and outer frame long plate 240 can jointly withstand external forces, enabling the installed outer frame 200 to maintain good performance and durability in various environments.

[0041] Please see Figure 4 The mounting frame 200 has several fan blade retaining plates 260 evenly spaced at the ventilation openings 210. Each fan blade retaining plate 260 has a buckle 261 that matches several ventilation blades 220. These buckles 261 ensure that the ventilation blades 220 are securely mounted on the fan blade retaining plate 260, and also ensure that the blades function properly during operation. This design not only improves the stability of the entire ventilation system but also simplifies installation and disassembly. In this way, the cooperation between the fan blade retaining plates 260 and the ventilation blades 220 makes the entire ventilation system more efficient during operation and also ensures uniform ventilation.

[0042] Please see Figure 4The ventilation blades 220 are detachably connected via a plurality of clips 261 located on the same horizontal line on each of the blade retaining plates 260. Each ventilation blade 220 is secured by the clips 261 on all the blade retaining plates 260, creating a vertical installation relationship between the ventilation blades 220 and the blade retaining plates 260. This design makes the installation and removal of the ventilation blades 220 more convenient, allowing users to easily assemble or disassemble them as needed. Simultaneously, the vertical installation of the ventilation blades 220 and the blade retaining plates 260 helps improve ventilation efficiency and ensures smooth indoor airflow. In practical applications, this detachable connection design not only facilitates maintenance and cleaning but also allows for adjustment of the number and position of the ventilation blades 220 according to actual conditions to meet ventilation needs in different scenarios.

[0043] Please see Figure 5 and Figure 6 The ventilation blade 220 includes a snap-fit ​​end 221 and an outlet end 222. The snap-fit ​​end 221 has a circular cross-section. The latch 261 has an "eight"-shaped inlet 262 and an inner cavity 263. The inner cavity 263 is adapted to the snap-fit ​​end 221. The ventilation blade 220 rotates based on the blade clamping plate 260 through the snap-fit ​​between the snap-fit ​​end 221 and the inner cavity 263. The circular cross-section of the snap-fit ​​end 221 allows for a better match with the inner cavity 263, resulting in a more secure snap-fit. The "eight"-shaped inlet 262 and inner cavity 263 of the latch 261 allow the ventilation blade 220 to easily snap into the latch 261. The inner cavity 263 is adapted to the snap-fit ​​end 221, meaning their shapes and sizes are matched, which allows the ventilation blade 220 to be more securely locked in the inner cavity 263. When the ventilation blade 220 is engaged with the inner cavity 263 through the snap-fit ​​end 221, it can rotate based on the rotation of the blade clamping plate 260, thus realizing the flexible adjustment of the ventilation blade 220.

[0044] Please see Figure 5 During use, the ventilation blade 220 is engaged with the inner cavity 263 through the inlet 262 via the snap-fit ​​end 221. The inner cavity 263 then holds the ventilation blade 220 in place, creating friction between the ventilation blade 220 and the inner cavity 263. This friction makes the ventilation blade 220 more stable when manually rotated. If not rotated, it remains fixed in a certain position, ensuring the angle adjustment of the ventilation blade 220. This type of ventilation blade 220 meets the user's needs for angle adjustment while also ensuring its stability.

[0045] Both the snap-fit ​​end 221 and the air outlet end 222 are internally interconnected; the connection between the snap-fit ​​end 221 and the air outlet end 222 is solid. The completely interconnected internal structure of the snap-fit ​​end 221 and the air outlet end 222 means that the interiors of both ends are connected, with no obstructions hindering the flow of air or other substances. Furthermore, the solid design at the connection between the snap-fit ​​end 221 and the air outlet end 222 prevents automatic rotation due to gravity. This design considers preventing unnecessary movement due to gravity during prolonged use, thereby increasing the stability and lifespan of the equipment. In addition, this design helps improve the efficiency of the equipment because it reduces energy loss due to movement, ensuring a more stable and efficient flow of air or other substances.

[0046] The filter element 400 can be a HEPA filter 400, activated carbon filter 400, electrostatic filter 400, or antibacterial filter 400. The choice depends on the specific application. If high air quality is required, such as for allergies or respiratory issues, a HEPA filter 400 is recommended. It effectively filters 99.97% of particles with a diameter of 0.3 microns and has excellent filtration effects on pollen, dust, and smoke. If the primary need is to remove odors and harmful gases (such as formaldehyde and volatile organic compounds), an activated carbon filter 400 is more suitable, as it removes these gases through adsorption. If the need is to remove bacteria and harmful gases from the air, a photocatalytic filter 400 provides additional protection, using photocatalysis to decompose harmful substances and kill bacteria. An electrostatic filter 400 is suitable for filtering smaller particles, is easy to maintain, and is suitable for daily use. If the need is to inhibit the growth of bacteria and mold, an antibacterial filter 400 can be used. In summary, the HEPA filter 400 can be chosen as the primary filter because it performs excellently in filtering common airborne particulate matter. For specific air quality requirements, it can be paired with other types of HEPA filters, such as activated carbon or photocatalytic filters, for optimal results.

[0047] Please see Figure 3The mounting inner frame 300 is composed of two inner frame short plates 310 and two inner frame long plates 320 spliced ​​together; the two inner frame short plates 310 and the two inner frame long plates 320 are installed in an alternating manner; the inner frame short plates 310 and inner frame long plates 320 are connected by an outer frame connector 250 at their joints. Rotating clips 330 are also provided around the inner perimeter of the mounting inner frame 300; the filter element 400 is locked or released by rotating the rotating clips 330. Initially, the filter element 300 is attracted by a magnetic component, but the attraction effect may decrease with increased usage time. To prevent the filter element 300 from becoming ineffective, the filter element 300 is then secured around its perimeter using simple rotating clips 330. The rotating clips 330 are simple to operate and provide a secure hold.

[0048] Please see Figure 1 and Figure 2 The inner frame 300 is composed of four plates of different lengths, including two shorter inner frame short plates 310 and two longer inner frame long plates 320. These plates are spliced ​​together in a specific order and manner to form a complete inner frame structure. It is worth noting that the two inner frame short plates 310 and the two inner frame long plates 320 are not simply arranged parallel to each other, but are installed in a staggered manner, which can increase the stability and strength of the inner frame to a certain extent. During the splicing process, adjacent inner frame short plates 310 and inner frame long plates 320 are connected by outer frame connectors 250 to ensure the firmness and stability of the entire inner frame structure. This connection method not only ensures the structural integrity of the inner frame but also makes the inner frame more flexible, facilitating installation and disassembly.

[0049] Please see Figure 3 Rotating clips 330 are specially provided around the inner perimeter of the mounting frame 300. These rotating clips 330 play a crucial role, allowing the filter element 400 to be locked or released by rotation. This means that when replacing or adjusting the filter element 400, no complicated operations are required; it can be easily completed by simply rotating the rotating clips 330, and the filter element can be removed from the magnetic component.

[0050] This utility model's return air vent is made of stainless steel, which not only gives it excellent corrosion resistance, allowing it to adapt to the complex environment of an operating room, but also, due to the high-quality surface treatment of stainless steel, makes the vent more aesthetically pleasing and sophisticated. The stainless steel texture also ensures that the vent maintains its appearance and durability for a long time, blending seamlessly into the overall environment of the operating room without appearing out of place. Furthermore, the filter element 400 has a simple and efficient structure, greatly reducing the difficulty of later maintenance and upkeep. The filter element 400 can be easily disassembled and replaced with simple operations, which not only saves maintenance costs but also improves the operating efficiency of the operating room ventilation system. In summary, this new type of return air vent ensures air quality in the operating room while providing a more convenient maintenance solution.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick release structure of a return air outlet in an operating room, characterized in that, It comprises a mounting keel, a mounting outer frame (200) and a mounting inner frame (300); the mounting outer frame (200) and the mounting inner frame (300) are both provided in a through manner; the mounting inner frame (300) is arranged in the mounting outer frame (200); The through part of the mounting inner frame (300) is a ventilation opening (210); the ventilation opening (210) is uniformly provided with a plurality of ventilation blades (220) at intervals; the mounting outer frame (200) and the mounting keel are connected through buckles (261); The inner side of the through part of the mounting inner frame (300) is provided with a magnetic attraction component; the inner side of the ventilation opening (210) of the mounting inner frame (300) is provided with a filter core (400); the periphery of the filter core (400) is provided with a magnetic attraction surface (410) matched with the magnetic attraction component; the filter core (400) is detachably mounted with the inner side of the ventilation opening (210) of the mounting inner frame (300) through the magnetic attraction surface (410).

2. The quick release structure of a return air outlet for an operating room according to claim 1, wherein, The mounting keel is made of a plurality of square steels and channel steels; the mounting keel is arranged at a preset mounting position and fixed at the mounting position through the cooperation of bolts and nuts.

3. The quick release structure of a return air outlet of an operating room according to claim 1, characterized in that, The mounting outer frame (200) is made by splicing two outer frame short plates (230) and two outer frame long plates (240); the two outer frame short plates (230) and the two outer frame long plates (240) are arranged in an interlaced manner; the outer frame short plates (230) and the outer frame long plates (240) are connected through outer frame connectors (250) at the joint.

4. The quick release structure of a return air outlet of an operating room according to claim 1, characterized in that, The ventilation opening (210) of the mounting outer frame (200) is provided with a plurality of fan blade clamping plates (260) at uniform intervals; each fan blade clamping plate (260) is provided with buckles (261) matched with a plurality of ventilation blades (220).

5. The operating room return air plenum quick disconnect structure of claim 4, wherein, The ventilation blades (220) are detachably connected through a plurality of buckles (261) on each fan blade clamping plate (260) located on the same horizontal line.

6. The operating room return air plenum quick disconnect structure of claim 5, wherein, The ventilation blades (220) comprise a clamping end (221) and an air outlet end (222); the clamping end (221) is provided in a circular cross-section; the buckle (261) is provided with an "eight" shaped inlet (262) and an inner cavity (263); the inner cavity (263) is matched with the clamping end (221); the ventilation blades (220) are rotated based on the fan blade clamping plate (260) through the clamping of the clamping end (221) and the inner cavity (263).

7. The operating room return air plenum quick disconnect structure of claim 6, wherein, The clamping end (221) and the air outlet end (222) are both provided in a through manner; the connection between the clamping end (221) and the air outlet end (222) is provided in a solid manner.

8. The quick release structure of a return air outlet of an operating room according to claim 1, characterized in that, The filter core (400) is a HEPA filter core (400), an activated carbon filter core (400), an electrostatic filter core (400) or an antibacterial filter core (400).

9. The quick release structure of a return air outlet for an operating room according to claim 1, characterized in that, The mounting inner frame (300) is spliced by two inner frame short plates (310) and two inner frame long plates (320); the two inner frame short plates (310) and the two inner frame long plates (320) are arranged in an interlaced manner; the inner frame short plate (310) and the inner frame long plate (320) are connected through an outer frame connecting piece (250) at the joint.

10. The quick release structure of a return air outlet of an operating room according to claim 9, characterized in that, The inner side of the mounting inner frame (300) is further provided with a rotating clamping piece (330); the filter core (400) is clamped or loosened by rotating the rotating clamping piece (330).

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