CN114087698B - Clean silence air supply system for operating room - Google Patents
Clean silence air supply system for operating room Download PDFInfo
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- CN114087698B CN114087698B CN202111405294.2A CN202111405294A CN114087698B CN 114087698 B CN114087698 B CN 114087698B CN 202111405294 A CN202111405294 A CN 202111405294A CN 114087698 B CN114087698 B CN 114087698B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F2007/005—Cyclic ventilation, e.g. alternating air supply volume or reversing flow direction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses a mute air supply system for a clean operating room, which is arranged outside the operating room and guides clean air into the operating room, and comprises a shell, an air inducing device, an air purifying device, a reversing device and an air return device, wherein the shell is arranged at the upper side of the operating room, a working cavity is arranged on the shell, the air inducing device is arranged in the working cavity, the air inducing device is connected with the air purifying device, the air purifying device is arranged in the working cavity, the reversing device is communicated with an air inducing device pipeline, the reversing device is arranged at the upper side of the operating room, the wind direction of the reversing device is downward, the wind direction lower end of the reversing device is an operating bed, the air return device is arranged at the lower side of the operating room, the air return device is communicated with the air inducing device pipeline, air flow treated by the air inducing device is disinfected and sterilized through the air purifying device, flow distribution is carried out through the reversing device, the operating bed is arranged at the lower end of a wind port of the reversing device, and the air return device guides the air into the air inducing device for filtration and sterilization, so that the air return can be recycled conveniently.
Description
Technical Field
The invention relates to the technical field of clean air supply of operating rooms, in particular to a mute air supply system for a clean operating room.
Background
Clean operating room is used for the internal medicine operation in-process more, through reforming transform air supply system, purifies, the sterilization to the air, reduces bacterium, the germ content in the operating room to reach aseptic protection's purpose, prevent when carrying out the internal medicine operation, cause the intraoperative infection, thereby influence the successful efficiency of operation.
Most of the existing air supply systems for operating rooms are implemented by a laminar flow technique, and output airflow directions are consistent and streamlines are approximately parallel. However, the conventional laminar flow air supply system performs aseptic processing on the whole operating room, the coverage area is large, the energy consumption is high, resource waste is easily caused, most of operations except large-area operations are only performed on local parts, and the aseptic scope selection cannot be performed according to the operation scale.
In addition, in order to reduce the energy consumption, reduce filtration and sterilization pressure, through indoor return air technique, carry out the residual air and utilize, guarantee operating room pressure balance, prevent that too big reduction of pressure from becoming aseptic effect, influence the operation even and going on.
Disclosure of Invention
The invention aims to provide a silent air supply system for a clean operating room, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a clean silence air supply system for operating room, silence air supply system installs outside the operating room, in leading-in operating room with clean air, which comprises a housin, the induced air device, the air purification device, switching-over device and air return device, the operating room upside is arranged in to the casing, be equipped with the working chamber on the casing, the working chamber is arranged in to the induced air device, induced air device and air purification device are connected, the working chamber is arranged in to the air purification device, switching-over device and induced air device pipeline intercommunication, the operating room upside is arranged in to the switching-over device, switching-over device wind direction is down, switching-over device wind direction lower extreme is the operation table, the operating room downside is arranged in to the air return device, air return device and induced air device pipeline intercommunication.
The casing is main installation basis, fix the casing through the operating room, collect wind through the induced air device, compress the air current, improve the air input, carry out impurity filtering and disinfection and isolation to the air inlet through the air purification device, carry out the air current direction through the switching-over device, carry out the residual air through the air return device and retrieve, it is normal to keep the indoor atmospheric pressure of operating room, to the induced air device in proper order through the working chamber, air purification device and switching-over device are fixed, the air current after the induced air device handles is disinfected through the air purification device, disinfect, join in marriage a journey through the switching-over device, switching-over device wind gap lower extreme is arranged in to the operation table, the air return device filters in the air direction induced air device, disinfect, be convenient for cyclic utilization.
Further, the induced air device includes the fan, guide duct and air mixing pipe, the fan, guide duct and air mixing pipe arrange in proper order in the work intracavity, fan air-out end and guide duct intercommunication, be equipped with acceleration section on the guide duct in proper order, pressure-equalizing section and diffuser segment, acceleration section is along the air current trend convergent setting, the diffuser segment is along the air current trend gradual expansion setting, the air purification device includes filter and ultraviolet sterilamp, the fan one end is kept away from to the guide duct is passed through filter and air mixing pipe intercommunication, be equipped with the air mixing chamber on the air mixing pipe, the mixed wind intracavity is arranged in to the ultraviolet sterilamp, filter both ends wind gap communicates with diffuser segment and air mixing chamber respectively.
Fix the fan through the working chamber, and install guide duct and mixed tuber pipe, the fan inlet end is equipped with air inlet filter assembly, carry out prefilter to the air inlet, prevent that great granule impurity from getting into the circulation wind channel, lead to the air current through the guide duct, section convergent setting with higher speed, pressurize the air current and speed up, carry out the water conservancy diversion through the equalizer section, reduce the unordered flow of air current, carry out the deceleration through the diffuser section, reduce the impact to the filter, improve filter life, further filter the air current after the air inlet filter assembly filters through the filter, improve the clean degree of air, install the sterilamp through mixed wind chamber, disinfect through the sterilamp, clear away the bacterium in the air current, prevent to cause the intraoperative infection, after the air current after the deceleration passes through the filter further, get into mixed wind intracavity velocity of flow reduction, change gaseous kinetic energy into gaseous static pressure, reduce flow performance, improve sterilization time.
Further, the induced draft device includes the aperture board, be equipped with the aperture groove on the mixed tuber pipe, the aperture trench is located and mixes the wind chamber end, aperture board and aperture groove rotate to be connected, the fan-shaped design of aperture board axial cross-section, aperture board both ends are equipped with the lug, be equipped with the aperture spring on the lug, the lug one end and aperture groove fastening connection are kept away from to the aperture spring, be equipped with the rectification passageway on mixing the tuber pipe, be equipped with the wedge groove on the aperture board, mix the wind chamber and pass through wedge groove and rectification passageway intermittent type intercommunication, the end and the aperture groove wall intermittent type contact of giving vent to anger of water conservancy diversion way, be equipped with super-pressure groove and pressure release groove on mixing the tuber pipe in proper order, be equipped with a plurality of water conservancy diversion ways on the aperture board, water diversion way air inlet section and mixed wind chamber intercommunication, water diversion way air-out end in proper order with super-pressure groove and pressure release groove intermittent type intercommunication, super-pressure groove is given vent to anger the end and is towards mixing wind chamber air inlet end.
The opening plate is rotatably guided through the opening groove, the opening plate controls the air inflow of the rectifying channel, the air outlet flow is adjusted according to needs, the opening plate is used for installing the opening spring through the bumps at two ends, the opening spring is located at a torsion spring, the other end of the opening spring is fixed through the opening groove, when the air inlet end of the wedge groove is located on the side edge of the fan-shaped opening plate, the air outlet end of the wedge groove is located on the arc edge of the opening plate, in the initial state, the wedge groove is plugged through the wall of the opening groove, the pretightening force is kept through the opening spring, the pressure is increased along with the increase of the air quantity in the air mixing cavity, the pressure difference at two sides of the opening plate is increased, the opening plate rotates under the action of the pressure difference at two sides, the air outlet end of the wedge groove is communicated with the rectifying channel, the pressure difference at two sides of the opening plate is increased, the corner of the opening plate is increased along with the increase of the air quantity, and the overlap ratio of the air outlet end of the wedge groove and the rectifying channel is increased; when the pressure in the air mixing cavity is higher, the flow velocity of the air flow is increased, the impact force on the lower bottom edge of the wedge groove is increased, the lower bottom surface of the wedge groove tends to be horizontal, so that the corner of the opening plate is increased, the flow guide channel is communicated with the overpressure groove, the high-pressure air flow flows out of the overpressure groove and faces the air inlet end of the air mixing cavity, the speed of the air flow entering the air mixing cavity is further reduced through convection impact, the disordered flow of the air flow in the air mixing cavity is improved, the mixing degree is improved, and the uniform sterilization performance is improved conveniently; when the mixed air cavity pressure is too large, in order to ensure that the pressure in the operating room is maintained in a certain interval, the impact of the air flow on the wedge groove is further increased, the opening plate rotates, so that the overlapping area of the wedge groove and the rectifying channel is further reduced, the flow guide channel crosses the overpressure groove and is communicated with the pressure relief groove, the pressure is relieved through the pressure relief groove, the excessive air is prevented from being introduced into the operating room, the flow speed of the air outlet end is increased, and the operation is influenced.
Further, the air return device comprises an air return ring and an air return pipe, the air return ring is arranged in the operating room, an air return port is arranged on the air return ring, an air outlet end of the air return port is provided with an air entraining flow channel, the air return pipe is communicated with the air entraining flow channel, a negative pressure air port is arranged on the air guide pipe, one end of the air return pipe, far away from the air entraining flow channel, is communicated with the negative pressure air port, the negative pressure air port is located at one end, close to the pressure equalizing section, of the diffusion section, and the air outlet end of the pressure relief groove is intermittently communicated with the negative pressure air port through a pipeline.
The air return ring is fixed through an operating room, the operating bed is arranged in an inner ring of the air return ring, the air return ring drains airflow in the operating room through an air return port, so that the airflow in the operating room flows downwards, the airflow short circuit and the turbulent flow are avoided through vertical laminar flow, the air return port is annular and faces the upper part of the operating bed, clean air blown by the reversing device is transmitted vertically, the directional performance is improved, surface horizontal transmission forms turbulent flow to blow ground impurities and raise bacteria, intraoperative infection is caused, the lower end of the operating room is ensured to be low pressure through the downward arrangement of the air return port, the upper end of the operating room is positive pressure, the air return pipe is communicated with a negative pressure air port, high-speed airflow is diffused through a diffusion section, the air guide pipe forms a venturi tube, a negative pressure area is formed at the negative pressure air port, suction force is generated through the air return pipe and communicated with an air exhaust flow channel, the ground clearance is ensured through the operating bed, negative pressure air suction is performed through the air return port, the collected airflow is recycled through the air flow channel, and when too much air is mixed in the air chamber, the pressure groove faces the upper end of the negative pressure air port, the negative pressure area is punched, and the negative pressure air port is prevented from being stabilized, and the air inlet from continuing to be used in the operating room.
Furthermore, the air return device also comprises an opening and closing ball, the opening and closing ball is arranged in the air entraining flow channel, the direction along which the air return port, the air entraining flow channel and the air return pipe sequentially flow is the air return direction, the diameter of the air entraining flow channel is gradually enlarged along the air return direction, the air entraining flow channel is obliquely arranged, and one end of the air entraining flow channel, which is close to the air return pipe, is positioned at a high position. The on-off of the air guide flow channel is controlled by the opening and closing ball, the air guide flow channel is obliquely arranged, and when negative pressure is generated in the return air pipe, the opening and closing ball moves upwards under the action of pressure difference between two sides, so that the cavities on two sides of the opening and closing ball are communicated, untreated air flows backwards to enter an operating room when an air supply system is stopped, and the use safety performance is improved.
Further, the tail end of the mixed air pipe is arranged in the reversing device, the reversing device comprises a mounting seat, an air distribution disc, a side pressure air pipe and an adjusting component, the mounting seat is fixedly connected with the shell, a mounting groove is formed in the mounting seat, a rectifying channel is communicated with the mounting groove through a rectifying pipeline, the air distribution disc is rotatably connected with the mounting groove, the mixed air pipe is communicated with the mounting groove, the adjusting component is fixedly connected with the wall surface of the mounting groove, a plurality of clamping grooves are formed in the air distribution disc along the circumferential direction, a ball joint is arranged on the side pressure air pipe and rotatably connected with the side pressure air pipe through the ball joint, the side pressure air pipe is spirally arranged, the air inlet end of the side pressure air pipe is communicated with the mounting groove, the side pressure air pipe is spirally arranged, the adjusting component comprises an adjusting air cylinder, the outer frame of the adjusting air cylinder is fixedly connected with the wall surface of the mounting groove, a transmission plate is arranged at the output end of the adjusting air cylinder, the lower side pressure air pipe is in transmission connection with the ball joint in an eccentric mode, the ball joint is located at one end of the side pressure air pipe, and the aperture of the side pressure air pipe is gradually reduced from top to bottom.
The air flow rectified by the air mixing pipe is distributed through the reversing device, the mounting seat is mounted through the shell, the edge of the mounting seat is mounted on a through hole on the upper side of an operating room, the mounting seat and the air return ring are concentrically arranged, the mounting seat rotatably guides the air distribution plate through the mounting groove, the side air distribution pipe is communicated with the air mixing pipe through the mounting groove, the rectified air flow is discharged to the lower side through the side air distribution pipe, the air is discharged downwards through a plurality of side air pipes which are circumferentially arranged and spirally arranged in an inclined way, the air distribution plate is driven to rotate through the reverse acting force of the discharged air, so that a tapered air flow layer is generated, an operating bed is isolated and is screened and protected through the air flow layer, germs in the operating room are prevented from rushing through the air flow layer to enter the range of the operating bed, intraoperative infection is caused, the operating part is a region with the maximum cleanliness through pressure regulation, the air flow flows from the region with the highest cleanliness to the region with the low cleanliness, the operation safety performance is improved, the lateral pressure air pipes jet downwards through the reducing arrangement, entrainment is caused to the taper center and the side edges, so that air flow at the taper axis flows to the air flow layer, the cleanliness of the middle area is ensured, the positive pressure range is adjusted according to the operation requirement, so that various operation requirements are met, when the operation range is large, displacement is output downwards through the adjusting cylinder, the lateral pressure air pipes are driven to rotate along the ball joints through the downward movement of the driving plate, the rotation guide is carried out through the clamping grooves, so that the inclination angles of the lateral pressure air pipes are changed, the vertical included angles of the lateral pressure air pipes are increased, the radiation range of the taper air flow layer is enlarged, the ball joints are eccentrically arranged on the lateral pressure air pipes, the lateral pressure air pipes at the lower ends of the ball joints are heavy, the driving plate positions the lateral pressure air pipes upwards, and the lateral pressure air pipes are positioned downwards through the self-weight of the lateral pressure air pipes and the reverse jet flow direction, thereby carry out bi-polar location to the side pressure tuber pipe, prevent that the side pressure tuber pipe from airing exhaust the in-process and causing vibrations to strike the driving plate, cause the noise, disturb the operation and go on.
Further, the reversing device further comprises a positive pressure air pipe, a through hole is formed in the middle of the air distribution plate, the positive pressure air pipe is fixedly connected with the wall surface of the through hole of the air distribution plate, an air blocking block is arranged at the lower end of the transmission plate and is designed in an inverted cone shape, the axis of the air blocking block and the axis of the positive pressure air pipe are collinear, and the aperture of the positive pressure air pipe is gradually enlarged from top to bottom.
Fix the positive pressure tuber pipe through the middle through-hole of air distribution plate, positive pressure tuber pipe upper end and mounting groove intercommunication, air exhaust to the middle of the toper air current layer, thereby guarantee that the inside air current of air current layer maintains the malleation, after the air current layer carries out the separation to outside germ, keep pressure through middle positive pressure tuber pipe, the downward flow in-process, outside dispersion, thereby produce the air current from inside to outside, further prevent the bacterium from getting into the operation area, and the safety performance is improved, through the setting of the air blocking piece tapering, when carrying out isolated on a large scale, the side pressure tuber pipe sprays the flow and increases, the air blocking piece moves down, reduce the cross-sectional area that overflows of positive pressure trachea, thereby change the distribution ratio of positive pressure tuber pipe and side pressure tuber pipe, make more air currents flow through the side pressure tuber pipe, guarantee the air current jet velocity in side pressure tuber pipe injection area, prevent dispersion, thereby improve the isolation performance of air current layer.
Preferably, the air return port is obliquely arranged along the air flow direction in the diffusion section to be leeward. The gas return port faces to the gas flow direction in the diffusion section and is arranged in a crossed angle, so that the gas of the primary screen is prevented from directly entering the gas return port.
As optimization, the return air pipe is provided with an air outlet, and the air outlet is provided with an exhaust valve. Carry out the residual air clearance through the air exit on the return-air duct, when accomplishing the operation, the return-air in the clearance return-air duct prevents that gaseous delay from causing bacterial growing, when the gas of pressure relief groove pressure release is too much, opens the supplementary exhaust of air discharge valve.
Compared with the prior art, the invention has the following beneficial effects: when the pressure in the air mixing cavity is higher, the flow velocity of the air flow is increased, the impact force on the lower bottom edge of the wedge groove is increased, the lower bottom surface of the wedge groove tends to be horizontal, so that the corner of the opening plate is increased, the flow guide channel is communicated with the overpressure groove, the high-pressure air flow flows out of the overpressure groove and faces the air inlet end of the air mixing cavity, the speed of the air flow entering the air mixing cavity is further reduced through convection impact, the disordered flow of the air flow in the air mixing cavity is improved, the mixing degree is improved, and the sterilization uniformity is convenient to improve; when the pressure of the air mixing cavity is overlarge, in order to ensure that the pressure in the operating room is maintained in a certain interval, the impact of air flow on the wedge groove is further increased, the opening plate rotates, so that the overlapping area of the wedge groove and the rectifying channel is further reduced, the flow guide channel passes through the overpressure groove and is communicated with the pressure relief groove, and the pressure is relieved through the pressure relief groove, so that the phenomenon that the flow velocity of an air outlet end is increased and the operation is influenced due to overlarge pressure in the air mixing cavity and the introduction of excessive air into the operating room is avoided; arrange through side pressure tuber pipe spiral, the slope is exhaust downwards, it rotates to drive the air distribution plate through carminative reverse acting force, thereby the production is tapered air current layer, completely cut off the operation table, screen the protection through the air current layer, prevent that the germ in the operation room from rushing through the air current layer and getting into the operation table scope, cause the intraoperative infection, through pressure adjustment, make operation local be the biggest region of cleanliness factor, the air current flows to the low region of cleanliness factor from the region of the highest cleanliness factor, improve operation safety performance, the side pressure tuber pipe sets up to downside efflux through the convergent, cause the entrainment to tapering center and side, thereby make the air current of tapering axis department flow to the air current layer, thereby guarantee the cleanliness factor of middle zone, according to the operation needs, adjust the malleation scope, thereby satisfy multiple operation demand.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a partial cross-sectional view of the reversing device of the present invention;
FIG. 3 isbase:Sub>A sectional view taken along line A-A of the view of FIG. 2;
FIG. 4 is a schematic view of the gas flow over-pressure bleed of the present invention;
FIG. 5 is an enlarged view of portion C of the view of FIG. 4;
FIG. 6 is an enlarged view of portion B of the view of FIG. 1;
FIG. 7 is an enlarged view of a portion D of the view of FIG. 2;
in the figure: 1-shell, 11-working chamber, 2-induced draft device, 21-blower, 22-induced draft tube, 221-accelerating section, 222-pressure equalizing section, 223-diffusing section, 224-negative pressure section, 23-air mixing tube, 231-air mixing chamber, 232-overpressure groove, 233-pressure relief groove, 234-rectifying channel, 235-opening groove, 24-opening plate, 241-flow guide channel, 242-wedge groove, 25-opening spring, 3-air purifying device, 31-filter, 32-ultraviolet sterilizing lamp, 4-reversing device, 41-mounting seat, 411-mounting groove, 42-air distribution disc, 421-clamping groove, 43-lateral air pipe, 44-positive pressure air pipe, 45-adjusting component, 451-adjusting cylinder, 452-transmission plate, 453-air blocking block, 5-air return device, 51-air return ring, 511-air return port, 512-air guide channel, 52-air return channel, 53-air return closing ball and 6-operating room.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the technical scheme that:
as shown in fig. 1 to 7, the silent air supply system is installed outside an operating room 6 to guide clean air into the operating room 6, and comprises a shell 1, an air inducing device 2, an air purifying device 3, a reversing device 4 and an air returning device 5, wherein the shell 1 is arranged on the upper side of the operating room 6, a working cavity 11 is arranged on the shell 1, the air inducing device 2 is arranged in the working cavity 11, the air inducing device 2 is connected with the air purifying device 3, the air purifying device 3 is arranged in the working cavity 11, the reversing device 4 is communicated with the air inducing device 2 through a pipeline, the reversing device 4 is arranged on the upper side of the operating room 6, the air direction of the reversing device 4 faces downwards, the lower end of the air direction of the reversing device 4 is an operating bed, the air returning device 5 is arranged on the lower side of the operating room 6, and the air returning device 5 is communicated with the air inducing device 2 through a pipeline.
As shown in fig. 3 and 4, the air inducing device 2 includes a fan 21, an air guide tube 22 and an air mixing tube 23, the fan 21, the air guide tube 22 and the air mixing tube 23 are sequentially disposed in the working chamber 11, an air outlet end of the fan 21 is communicated with the air guide tube 22, the air guide tube 22 is sequentially provided with an accelerating section 221, a pressure equalizing section 222 and a diffusing section 223, the accelerating section 221 is gradually reduced along an air flow direction, the diffusing section 223 is gradually expanded along the air flow direction, the air purifying device 3 includes a filter 31 and an ultraviolet sterilizing lamp 32, one end of the air guide tube 22 far away from the fan 21 is communicated with the air mixing tube 23 through the filter 31, the air mixing tube 23 is provided with an air mixing chamber 231, the ultraviolet sterilizing lamp 32 is disposed in the air mixing chamber 231, and air outlets at two ends of the filter 31 are respectively communicated with the diffusing section 223 and the air mixing chamber 231.
Fix fan 21 through working chamber 11, and install guide duct 22 and muddy tuber pipe 23, fan 21 inlet end is equipped with air inlet filter assembly, carry out prefilter to the air inlet, prevent that great granule impurity from getting into the circulation wind channel, lead to the air current through guide duct 22, section 221 convergent setting accelerates, pressurize the air current and speed up, carry out the water conservancy diversion through pressure-equalizing section 222, reduce the unordered flow of air current, slow down through diffuser 223, reduce the impact to filter 31, improve filter 31 life, air current after filter 31 filters the air inlet filter assembly filtration carries out further filtration through filter 31, improve the clean degree of air, install ultraviolet sterilizing lamp 32 through muddy tuber chamber 231, disinfect through ultraviolet sterilizing lamp 32, clear away the bacterium in the air current, prevent to cause the art to infect, air current after slowing down through diffuser 223 further slows down through filter 31, get into the interior velocity of flow reduction of muddy tuber chamber 231, change gaseous kinetic energy into gaseous static pressure, reduce the flow performance, improve the sterilization time.
As shown in fig. 3 to 5, the induced draft device 2 includes an opening plate 24, an opening groove 235 is disposed on the air mixing pipe 23, the opening groove 235 is located at the end of the air mixing cavity 231, the opening plate 24 is rotatably connected to the opening groove 235, the axial section of the opening plate 24 is designed in a sector shape, a bump is disposed at each of two ends of the opening plate 24, an opening spring 25 is disposed on each bump, one end of each opening spring 25, which is far away from each bump, is fixedly connected to the opening groove 235, a rectifying channel 234 is disposed on the air mixing pipe 23, a wedge groove 242 is disposed on the opening plate 24, the air mixing cavity 231 is intermittently communicated with the rectifying channel 234 through the wedge groove 242, the air outlet end of the flow guide channel 241 is intermittently contacted with the wall surface of the opening groove 235, an overpressure groove 232 and a pressure relief groove are sequentially disposed on the air mixing pipe 23, a plurality of flow guide channels 241 are disposed on the opening plate 24, the air inlet section of the flow guide channel 241 is communicated with the air mixing cavity 231, the air outlet end of the overpressure groove 232 and the pressure relief groove 233 are sequentially intermittently communicated with the air inlet end of the air mixing cavity 231.
The opening plate 24 is rotatably guided through the opening groove 235, the opening plate 24 controls the air inflow of the rectifying channel 234, the air outlet flow is adjusted as required, the opening plate 24 is provided with the opening spring 25 through the bumps at two ends, the opening spring 25 is a torsion spring, the other end of the opening spring 25 is fixed through the opening groove 235, when the air inlet end of the wedge groove 242 is arranged at the side edge of the fan-shaped opening plate 24, the air outlet end of the wedge groove 242 is arranged at the arc edge of the opening plate 24, in the initial state, the wedge groove 242 is blocked through the wall surface of the opening groove 235, the pretightening force is kept through the opening spring 25, as the air quantity in the air mixing cavity 231 is increased, the pressure difference between two sides of the opening plate 24 is increased, the opening plate 24 rotates under the action of the pressure difference between two sides, the air outlet end of the wedge groove 242 is communicated with the rectifying channel 234, and as the air quantity is increased, the pressure difference between two sides of the opening plate is increased, the rotation angle of the opening plate 24 is increased, and the overlap ratio of the air outlet end of the wedge groove 242 and the rectifying channel 234 is increased; when the pressure in the air mixing cavity 231 is higher, the flow velocity of the air flow is increased, the impact force on the lower bottom edge of the wedge groove 242 is increased, the lower bottom surface of the wedge groove 242 tends to be horizontal, so that the rotating angle of the opening plate 24 is increased, the flow guide channel 241 is communicated with the overpressure groove 232, the high-pressure air flow flows out of the overpressure groove 232 and faces the air inlet end of the air mixing cavity 231, the speed of the air flow entering the air mixing cavity is further reduced through convection impact, the disordered flow of the air flow in the air mixing cavity is improved, the mixing degree is improved, and the sterilization uniformity performance is improved conveniently; when the pressure in the air mixing cavity 231 is too high, in order to ensure that the pressure in the operating room is maintained in a certain range, the impact of the air flow on the wedge groove 242 is further increased, the opening plate 24 rotates, so that the overlapping area of the wedge groove and the rectifying channel 234 is further reduced, the guide channel 241 crosses the overpressure groove 232 and is communicated with the pressure relief groove 233, the pressure is relieved through the pressure relief groove 233, the phenomenon that the pressure in the air mixing cavity 231 is too high, and the excessive air is introduced into the operating room, so that the flow speed of the air outlet end is increased, and the operation is influenced is performed.
As shown in fig. 1, 4 and 6, the air return device 5 includes an air return ring 51 and an air return pipe 52, the air return ring 51 is disposed in the operating room 6, the air return ring 51 is provided with an air return port 511, an air outlet end of the air return port 511 is provided with an air bleed flow passage 512, the air return pipe 52 is communicated with the air bleed flow passage 512, the air guide pipe 22 is provided with a negative pressure air port 224, one end of the air return pipe 52 far from the air bleed flow passage 512 is communicated with the negative pressure air port 224, the negative pressure air port 224 is located at one end of the diffusion section 223 close to the pressure equalizing section 222, and an air outlet end of the pressure relief groove 233 is intermittently communicated with the negative pressure air port 224 through a pipeline.
The air return ring 51 is fixed through the operating room 6, the operating bed is arranged in the inner ring of the air return ring 51, the air return ring 51 guides the air flow in the operating room 6 through an air return port 511, so that the air flow in the operating room 6 flows downwards, the air flow is prevented from being short-circuited and turbulent through vertical laminar flow, the air return port 511 is annular and faces the upper part of the operating bed, the clean air blown by the reversing device 4 is vertically transmitted to improve the orientation performance, the surface horizontal transmission forms turbulent flow to drive ground impurities and bacteria to rise, so as to cause intraoperative infection, the air return port 511 is arranged below to ensure that the lower end of the operating room is low-pressure and the upper end is positive-pressure, the air return pipe 52 is communicated with a negative-pressure air port 224, the high-speed air flow is diffused through a diffusion section 223 to form a venturi-like tube 22, a negative-pressure area is formed at the negative-pressure air port 224, so that the air return pipe 52 generates suction, the air return pipe 52 is communicated with the air guide flow channel 512, the ground space is ensured through the operating bed, the air return port 511 performs negative-pressure air suction, the collected air flow passes through the negative-pressure air channel 512 for recycling, when the air mixing cavity 231, the air leakage exceeds the pressure groove, the upper end of the negative-pressure air inlet 231, the air channel presses the air inlet 224, and the air inlet 224, thereby preventing the air from the negative-pressure from pressing of the operating room 6 from the negative-stabilizing air inlet from the operating room 6.
As shown in fig. 6, the air return device 5 further includes an opening and closing ball 53, the opening and closing ball 53 is disposed in the air-bleed flow passage 512, the direction along which the air return port 511, the air-bleed flow passage 512 and the air return pipe 52 sequentially flow is the air return direction, the diameter of the air-bleed flow passage 512 is gradually increased along the air return direction, the air-bleed flow passage 512 is obliquely disposed, and one end of the air-bleed flow passage 512, which is close to the air return pipe 52, is located at a high position. The opening and closing ball 53 is used for controlling the on-off of the air-entraining flow passage 512, the air-entraining flow passage 512 is obliquely arranged, and when negative pressure is generated in the air return pipe 52, the opening and closing ball 53 moves upwards under the action of pressure difference between two sides, so that the cavities on two sides separated by the opening and closing ball 53 are communicated, untreated air is prevented from flowing backwards to enter an operating room when the air supply system is stopped, and the use safety performance is improved.
As shown in fig. 1, 3-5, and 7, the reversing device 4 is disposed at the tail end of the air mixing duct 23, the reversing device 4 includes a mounting seat 41, an air distribution plate 42, a side pressure air duct 43 and an adjusting component 45, the mounting seat 41 is fastened to the housing 1, a mounting groove 411 is disposed on the mounting seat 41, the air distribution passage 234 is communicated with the mounting groove 411 through a rectification duct, the air distribution plate 42 is rotatably connected with the mounting groove 411, the air mixing duct 23 is communicated with the mounting groove 411, the adjusting component 45 is fastened to the wall surface of the mounting groove 411, a plurality of slots 421 are circumferentially disposed on the air distribution plate 42, a ball joint is disposed on the side pressure air duct 43, the side pressure air duct 43 is rotatably connected with the slots 421 through the ball joint, the side pressure air duct 43 is spirally disposed, the air inlet end of the side pressure air duct 43 is communicated with the mounting groove 411, the adjusting component 45 includes an adjusting cylinder 451, the outer frame 451 is fastened to the wall surface of the adjusting cylinder 411, an output end of the adjusting cylinder is provided with a driving plate 452, the driving plate 452 is drivingly connected with the side pressure air duct 43, the ball joint is eccentrically disposed at one end of the ball joint, and the aperture of the driving plate 43 is gradually reduced from the upper end to the lower end of the lower side pressure air duct 43.
The air flow rectified by the air mixing pipe 23 is distributed through the reversing device 4, the mounting seat 41 is mounted through the shell 1, the edge of the mounting seat 41 is mounted on a through hole on the upper side of the operating room 6, the mounting seat 41 and the air return ring 51 are concentrically arranged, the mounting seat 41 rotatably guides the air distribution plate 42 through the mounting groove 411, the side pressure air pipe 43 is communicated with the air mixing pipe 23 through the mounting groove 411, the rectified air flow is discharged towards the lower side through the side pressure air pipe 43, the air is discharged obliquely downwards through the spiral arrangement of the side pressure air pipes 43 through the plurality of side air pipes 43 which are circumferentially arranged, the air distribution plate 42 is driven to rotate through the reverse acting force of the discharged air, so that a tapered air flow layer is generated, the operating bed is isolated, the air flow layer is screened and protected, the germs in the operating room 6 are prevented from entering the range of the operating bed through the air flow layer, the infection in the operation is caused, the local part of the operation is the maximum cleanliness through pressure regulation, the air current flows from the region with the highest cleanliness to the region with the low cleanliness, the operation safety performance is improved, the lateral pressure air pipes jet downwards through the reducing arrangement to cause entrainment to the taper center and the side edges, so that the air current at the taper axis flows to the air current layer, the cleanliness of the middle region is ensured, the positive pressure range is adjusted according to the operation requirement, so as to meet various operation requirements, when the operation range is larger, the lateral pressure air pipes are downwards output and displaced through the adjusting air cylinder 451, the lateral pressure air pipes 43 are downwards moved through the transmission plate 452 to be driven to rotate along the ball joints, the rotation and the guidance are carried out through the clamping grooves 421, so that the inclination angles of the lateral pressure air pipes are changed, the vertical included angles of the lateral pressure air pipes are increased, so as to increase the radiation range of the taper air current layer, the ball joints are eccentrically arranged on the lateral pressure air pipes 43, so that the lateral pressure at the lower ends of the ball joints are heavy, and the transmission plate 452 positions the lateral pressure air pipes 43 upwards, fix a position under the side pressure tuber pipe through side pressure tuber pipe dead weight and efflux reverse action power to carry out the bi-polar location to the side pressure tuber pipe, prevent that side pressure tuber pipe 43 from leading to the fact vibrations in-process of airing exhaust, thereby strike drive plate 452, cause the noise, disturb the operation and go on.
As shown in fig. 7, the reversing device 4 further includes a positive pressure air pipe 44, a through hole is formed in the middle of the air distribution plate 42, the positive pressure air pipe 44 is fixedly connected with the wall surface of the through hole of the air distribution plate 42, an air blocking block 453 is arranged at the lower end of the transmission plate 452, the air blocking block 453 is designed in an inverted cone shape, the axial lines of the air blocking block 453 and the positive pressure air pipe 44 are collinear, and the aperture of the positive pressure air pipe 44 is gradually enlarged from top to bottom.
Fix positive-pressure air pipe 44 through the middle through-hole of air distribution plate 42, positive-pressure air pipe 44 upper end and mounting groove 411 intercommunication, to airing exhaust in the middle of the toper air current layer, thereby guarantee that the inside air current of air current layer maintains the malleation, after the air current layer carries out the separation to outside germ, keep pressure through middle positive-pressure air pipe 44, in the flow process of downside, outside dispersion, thereby produce the air current from inside to outside, further prevent that the bacterium from getting into the operation region, improve the security performance, through the setting of air blocking piece 453 tapering, when carrying out isolated on a large scale, the side pressure tuber pipe sprays the flow and increases, air blocking piece 453 moves down, reduce the cross-flow section area of positive-pressure air pipe 42, thereby change the distribution ratio of positive-pressure air pipe 44 and side pressure tuber pipe 43, make more air current flow through the side pressure tuber pipe outflow, guarantee the air current jet velocity in side pressure injection region, prevent dispersion, thereby improve the isolation performance of air current layer.
Preferably, the air return ports 511 are arranged along the air flow direction in the diffuser 223 in a leeward inclined manner. The return air port 511 is arranged in a crossing angle towards the gas flow direction in the diffuser section 223, so that the gas of the primary screen is prevented from directly entering the return air port.
Preferably, the return air duct 52 is provided with an air outlet, and the air outlet is provided with an exhaust valve. Carry out the residual air clearance through the air exit on the return-air duct 52, when accomplishing the operation, the return-air in the clearance return-air duct 52 prevents that gaseous delay from causing bacterial growing, when the gas of decompression groove 233 pressure release was too much, opens the supplementary exhaust of air release valve.
The working principle of the invention is as follows: when the pressure in the air mixing cavity 231 is higher, the flow velocity of the air flow is increased, the impact force on the lower bottom edge of the wedge groove 242 is increased, the lower bottom surface of the wedge groove 242 tends to be horizontal, so that the rotating angle of the opening plate 24 is increased, the flow guide channel 241 is communicated with the overpressure groove 232, the high-pressure air flow flows out of the overpressure groove 232 and faces the air inlet end of the air mixing cavity 231, the speed of the air flow entering the air mixing cavity is further reduced through convection impact, the disordered flow of the air flow in the air mixing cavity is improved, the mixing degree is improved, and the sterilization uniformity performance is improved conveniently; when the pressure in the air mixing cavity 231 is too high, in order to ensure that the pressure in the operating room is maintained in a certain interval, the impact of the air flow on the wedge groove 242 is further increased, the opening plate 24 rotates, so that the overlapping area of the wedge groove and the rectifying channel 234 is further reduced, the guide channel 241 crosses the overpressure groove 232 and is communicated with the pressure relief groove 233, and the pressure is relieved through the pressure relief groove 233, so that the phenomenon that the pressure in the air mixing cavity 231 is too high, and the excessive air is introduced into the operating room, so that the flow velocity of the air outlet end is increased, and the operation is influenced is avoided; arrange through side pressure tuber pipe 43 spiral, the slope is exhaust downwards, it rotates to drive air distribution plate 42 through carminative reverse acting force, thereby the production is tapered air current layer, to the operation table completely cut off, screen the protection through the air current layer, prevent that the germ in the operating room 6 from rushing through the air current layer and getting into the operation table scope, cause the intraoperative infection, through pressure adjustment, make the operation local be the biggest region of cleanliness factor, the air current flows to the low region of cleanliness factor from the region that the cleanliness factor is the highest, improve operation safety performance, the side pressure tuber pipe sets up to downside efflux through the convergent, cause the entrainment to tapering center and side, thereby make the air current of tapering axis department flow to the air current layer, thereby guarantee middle zone's cleanliness factor, according to the operation needs, adjust the malleation scope, thereby satisfy multiple operation demand.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a clean silence air supply system for operating room, silence air supply system installs in operating room (6) outside, with clean air leading-in operating room (6) in, its characterized in that: the mute air supply system comprises a shell (1), an air inducing device (2), an air purifying device (3), a reversing device (4) and an air return device (5), wherein the shell (1) is arranged on the upper side of an operating room (6), a working cavity (11) is formed in the shell (1), the air inducing device (2) is arranged in the working cavity (11), the air inducing device (2) is connected with the air purifying device (3), the air purifying device (3) is arranged in the working cavity (11), the reversing device (4) is communicated with the air inducing device (2) through a pipeline, the reversing device (4) is arranged on the upper side of the operating room (6), the air direction of the reversing device (4) faces downwards, the lower end of the air direction of the reversing device (4) is an operating bed, the air return device (5) is arranged on the lower side of the operating room (6), and the air return device (5) is communicated with the air inducing device (2) through a pipeline;
the air inducing device (2) comprises a fan (21), an air guide pipe (22) and an air mixing pipe (23), the fan (21), the air guide pipe (22) and the air mixing pipe (23) are sequentially arranged in the working cavity (11), the air outlet end of the fan (21) is communicated with the air guide pipe (22), an accelerating section (221), a pressure equalizing section (222) and a diffusing section (223) are sequentially arranged on the air guide pipe (22), the accelerating section (221) is gradually reduced along the trend of air flow, the diffusing section (223) is gradually expanded along the trend of air flow, the air purifying device (3) comprises a filter (31) and an ultraviolet sterilizing lamp (32), one end, far away from the fan (21), of the air guide pipe (22) is communicated with the air mixing pipe (23) through the filter (31), an air mixing cavity (231) is arranged on the air mixing pipe (23), the ultraviolet sterilizing lamp (32) is arranged in the air mixing cavity (231), and air ports at two ends of the filter (31) are respectively communicated with the diffusing section (223) and the air mixing cavity (231);
the induced draft device (2) comprises an opening plate (24), an opening groove (235) is formed in the air mixing pipe (23), the opening groove (235) is located at the tail end of an air mixing cavity (231), the opening plate (24) is rotatably connected with the opening groove (235), the shaft section of the opening plate (24) is designed in a fan shape, protruding blocks are arranged at two ends of the opening plate (24), opening springs (25) are arranged on the protruding blocks, one ends, far away from the protruding blocks, of the opening springs (25) are fixedly connected with the opening groove (235), a rectifying channel (234) is arranged on the air mixing pipe (23), wedge grooves (242) are formed in the opening plate (24), the air mixing cavity (231) is intermittently communicated with the rectifying channel (234) through the wedge grooves (242), a plurality of flow guide channels (241) are arranged on the opening plate (24), an air outlet end of the flow guide channels (241) is intermittently contacted with the wall surface of the opening groove (235), an overpressure groove (232) and an overpressure pressure relief groove (233) are sequentially arranged on the air mixing pipe (23), the air outlet section is communicated with the overpressure groove (241) and the air inlet groove (233) and the overpressure groove (233) are sequentially communicated with the overpressure groove (231).
2. The quiet air supply system for the clean operating room as claimed in claim 1, wherein: the air return device (5) comprises an air return ring (51) and an air return pipe (52), the air return ring (51) is arranged in the operating room (6), an air return port (511) is formed in the air return ring (51), an air outlet end of the air return port (511) is provided with an air introducing flow channel (512), the air return pipe (52) is communicated with the air introducing flow channel (512), a negative pressure air port (224) is formed in the air guide pipe (22), one end, far away from the air introducing flow channel (512), of the air return pipe (52) is communicated with the negative pressure air port (224), the negative pressure air port (224) is located at one end, close to the pressure equalizing section (222), of the diffusion section (223), and the air outlet end of the pressure relief groove (233) is intermittently communicated with the negative pressure air port (224) through a pipeline.
3. The quiet air supply system for the clean operating room as claimed in claim 2, wherein: the air return device (5) further comprises a starting and stopping ball (53), the starting and stopping ball (53) is arranged in the air introducing flow channel (512), the direction along which the air return port (511), the air introducing flow channel (512) and the air return pipe (52) sequentially flow is the air return direction, the diameter of the air introducing flow channel (512) is gradually enlarged along the air return direction, the air introducing flow channel (512) is obliquely arranged, and one end, close to the air return pipe (52), of the air introducing flow channel (512) is located at a high position.
4. The quiet air supply system for the clean operating room as claimed in claim 3, wherein: the air mixing pipe is characterized in that the tail end of the air mixing pipe (23) is arranged in the reversing device (4), the reversing device (4) comprises a mounting seat (41), an air distribution plate (42), a side pressure air pipe (43) and an adjusting assembly (45), the mounting seat (41) is in fastening connection with the shell (1), a mounting groove (411) is formed in the mounting seat (41), a rectifying channel (234) is communicated with the mounting groove (411) through a rectifying pipeline, the air distribution plate (42) is in rotating connection with the mounting groove (411), the air mixing pipe (23) is communicated with the mounting groove (411), the adjusting assembly (45) is in wall fastening connection with the mounting groove (411), a plurality of clamping grooves (421) are formed in the air distribution plate (42) along the circumferential direction, a ball joint is formed in the side pressure air pipe (43), the side pressure air pipe (43) is in rotating connection with the clamping grooves (421) through the ball joint, the side pressure air pipe (43) is in spiral arrangement, an air inlet end is communicated with the mounting groove (411), the side pressure air pipe (43) is in spiral arrangement, the adjusting assembly (45) comprises an adjusting cylinder transmission assembly (451), the outer frame transmission plate (451) is connected with the mounting groove (451), and an adjusting cylinder (452) connected with the side pressure air cylinder (411), the ball joint is eccentrically arranged, the ball joint is positioned at one end, close to the transmission plate (452), of the side pressure air pipe (43), and the aperture of the side pressure air pipe (43) is gradually reduced from top to bottom.
5. The quiet air supply system for the clean operating room as claimed in claim 4, wherein: reversing arrangement (4) still include malleation tuber pipe (44), be equipped with the through-hole in the middle of air distribution plate (42), malleation tuber pipe (44) and air distribution plate (42) lead to hole wall face fastening connection, driving plate (452) lower extreme is equipped with hinders air mass (453), hinder air mass (453) for the back taper design, hinder air mass (453) and malleation tuber pipe (44) axis collineation, malleation tuber pipe (44) aperture from the top down is gradually enlarged the setting.
6. The quiet air supply system for the clean operating room as claimed in claim 3, wherein: the air return ports (511) are obliquely arranged along the air flow direction in the diffusion section (223) to be leeward.
7. The quiet air supply system for the clean operating room as claimed in claim 3, wherein: an air outlet is arranged on the air return pipe (52), and an exhaust valve is arranged at the air outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111405294.2A CN114087698B (en) | 2021-11-24 | 2021-11-24 | Clean silence air supply system for operating room |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111405294.2A CN114087698B (en) | 2021-11-24 | 2021-11-24 | Clean silence air supply system for operating room |
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| CN114087698A CN114087698A (en) | 2022-02-25 |
| CN114087698B true CN114087698B (en) | 2023-01-31 |
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| CN202419800U (en) * | 2012-01-04 | 2012-09-05 | 马力 | Air purification and ventilation system and air purification and ventilation air-conditioning system |
| CN106288064A (en) * | 2016-10-27 | 2017-01-04 | 殷晓冬 | Modularity variable working condition medical air cleaning system |
| GB2562263A (en) * | 2017-05-10 | 2018-11-14 | Mosen Ltd | Bellmouth for jetfan |
| CN109945310B (en) * | 2019-03-31 | 2021-05-28 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and air conditioner |
| US11473593B2 (en) * | 2020-03-04 | 2022-10-18 | Lg Electronics Inc. | Blower comprising a fan installed in an inner space of a lower body having a first and second upper body positioned above and a space formed between the bodies wherein the bodies have a first and second openings formed through respective boundary surfaces which are opened and closed by a door assembly |
| CN111298584B (en) * | 2020-04-13 | 2022-07-29 | 山东聚亨源环保科技有限公司 | Double-venturi pneumatic wet dust removal system |
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