Air supply laminar flow ceiling structure of clean room

Abstract

The utility model discloses a clean room air supply laminar flow ceiling structure which is characterized in that a laminar flow ceiling body is of a cuboid frame structure, openings are symmetrically formed in the two long side edges of the laminar flow ceiling body, a plurality of filter screen supports are arranged in the laminar flow ceiling body, a plurality of tubular filter screens are arranged on the filter screen supports, and a separation net is arranged in the outer direction of the laminar flow ceiling body; a negative pressure layer is arranged on a frame of the laminar flow ceiling body, the negative pressure layer is attached to the filter screen support and the tubular filter screen in shape, a plurality of negative pressure fans are arranged on the negative pressure layer, a gas flow guide layer is arranged on the negative pressure layer, and a gas flow channel, a gas flow rate sensor and an electric control flow channel valve are arranged in the gas flow guide layer. High-flux filtration of air is realized through the densely arranged tubular filter screens, and stable and uniform directional output of air flow is realized through the air flow guide layer and flow channel control.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air filtration, particularly relates to a clean room air supply laminar ceiling structure. BACKGROUND

[0002] The main function of a clean room is to provide a controlled, low-pollution environment, ensuring that the concentration of particulate matter, bacteria and other pollutants in the indoor air is controlled within certain limits. This is crucial for many high-tech industries such as semiconductor manufacturing, biomedicine, precision instrument processing, etc., which can prevent product contamination and improve product quality and yield. At the same time, clean rooms can also protect the health of operating personnel and prevent them from being harmed by harmful substances. In short, clean rooms are an indispensable part of modern industrial production and play an important role in ensuring product quality and production safety.

[0003] In a clean room, air supply laminar ceiling is a key component to ensure indoor air quality. Through a precisely designed air supply system, air supply laminar ceiling can achieve effective air filtration and flow control to reduce the number of particulate matter and bacteria in the air, thereby reducing the risk of cross-infection. In the medical field, in particular, clean operating rooms are the core place for performing various surgeries, and the design and function of their air supply laminar ceiling are crucial. They move air from the clean zone to the contaminated zone through uniform horizontal airflow, avoiding cross-contamination and providing a clean, sterile, and safe working environment for medical personnel, reducing the risk of surgery and maximizing patient safety and recovery.

[0004] Although air supply laminar ceiling plays a crucial role in clean rooms, existing technologies still face some challenges. First, the filtration flux of some air supply laminar ceilings is relatively low, which means that they may not be efficient in handling large amounts of air, resulting in air quality in the clean room not meeting the desired cleanliness standards. Second, air supply uniformity is also a major problem. Due to design or installation deficiencies, such as fan failure, filter clogging, and unreasonable structures inside the air duct, air supply laminar ceiling may produce uneven airflow during operation. This not only affects the distribution of air quality in the clean room, but also may cause the formation of local pollution areas, thereby violating the original intention of clean room design. SUMMARY

[0005] The clean room air supply laminar ceiling structure provided by the embodiments of the present application solves the problem of low filtration flux of some air supply laminar ceilings in the prior art, which means that they may not be efficient in handling large amounts of air, resulting in air quality in the clean room not meeting the desired cleanliness standards, and fan failure, filter clogging, and unreasonable structures inside the air duct causing air supply laminar ceiling to produce uneven airflow during operation.

[0006] In one aspect, the embodiment of the present application provides a clean room air supply laminar ceiling structure, comprising:

[0007] The laminar ceiling body is a cuboid frame structure, two long sides of the laminar ceiling body are symmetrically provided with openings, a plurality of filter screen supports are arranged on the openings and face the interior of the laminar ceiling body, a plurality of tubular filter screens are arranged on the filter screen supports, the tubular filter screens are one-way opening microporous membrane tubes, a separation net is arranged on the openings and faces the exterior of the laminar ceiling body, a negative pressure layer is arranged on the frame of the laminar ceiling body, the negative pressure layer is arranged in a shape matched with the filter screen supports and the tubular filter screens, a plurality of negative pressure fans are arranged on the negative pressure layer, a gas flow guide layer is arranged on the negative pressure layer, a gas flow channel, a gas flow rate sensor and an electrically controlled flow valve are arranged in the gas flow guide layer, the gas flow rate sensor and the electrically controlled flow valve are connected to a gas flow guide controller through a wireless signal, and a ventilation net cover is arranged on the negative pressure layer and is arranged in a length-width corresponding to the negative pressure layer and the laminar ceiling body.

[0008] In a possible implementation, edges of the laminar ceiling body, the negative pressure layer, the gas flow guide layer and the ventilation net cover that are in contact with each other are provided with sealing strips.

[0009] In a possible implementation, the filter screen supports are welded to the tubular filter screens, and the tubular filter screens are provided in multiple specifications according to the pore size of the microporous membrane.

[0010] In a possible implementation, the negative pressure layer is a concave structure, and a plurality of negative pressure fans are arranged at concave positions of the concave structure.

[0011] In a possible implementation, the gas flow channel is provided with a plurality of gas input ports and a plurality of gas output ports, and the plurality of gas input ports are correspondingly arranged at air outlets of the plurality of negative pressure fans.

[0012] In a possible implementation, the gas output ports face the ventilation net cover, and the plurality of gas output ports are arranged in a rectangular equidistant arrangement corresponding to an air outlet face of the ventilation net cover.

[0013] In a possible implementation, the air outlet face is a rectangular plate provided with a plurality of air permeable holes, an adjusting plate is slidably arranged on the air outlet face, the adjusting plate is arranged in a length-width corresponding to the air outlet face, a plurality of through holes corresponding to the air permeable holes are arranged on the adjusting plate, the adjusting plate is driven to slide by an adjusting motor, and the adjusting motor is connected to a ventilation net cover controller through a wireless signal.

[0014] The clean room air supply laminar ceiling structure has the following advantages:

[0015] (1) By densely arranged tubular filter screen to achieve high flux filtration of air.

[0016] (2) By gas flow layer and flow control to achieve stable and uniform directional output of airflow. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The overall structure schematic diagram of a clean room air supply laminar ceiling structure provided by the embodiment of the present application.

[0019] Explanation of figure marks: 1, laminar ceiling main body; 11, filter screen support; 12, tubular filter screen; 13, isolation screen; 2, negative pressure layer; 21, negative pressure fan; 3, gas flow layer; 4, ventilation screen cover. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Figure 1 The overall structure schematic diagram of a clean room air supply laminar ceiling structure provided by the embodiment of the present application; the embodiment of the present application provides a clean room air supply laminar ceiling structure, which comprises:

[0022] The laminar flow ceiling body 1 is a cuboid frame structure, two long sides of the laminar flow ceiling body 1 are symmetrically provided with openings, a plurality of filter screen supports 11 are arranged on the openings and face the inside of the laminar flow ceiling body 1, a plurality of tubular filter screens 12 are arranged on the filter screen supports 11, the tubular filter screens 12 are one-way opening microporous membrane tubes, a separation net 13 is arranged on the openings and faces the outside of the laminar flow ceiling body 1, a negative pressure layer 2 is arranged on the frame of the laminar flow ceiling body 1, the negative pressure layer 2 is arranged in the shape of the filter screen support 11 and the tubular filter screen 12, a plurality of negative pressure fans 21 are arranged on the negative pressure layer 2, a gas flow guide layer 3 is arranged on the negative pressure layer 2, the gas flow guide layer 3 is internally provided with a gas flow channel, a gas flow rate sensor and an electrically controlled flow channel valve, the gas flow rate sensor and the electrically controlled flow channel valve are connected to a gas flow guide controller through a wireless signal, and a ventilation net cover 4 is arranged on the negative pressure layer 2 and corresponds to the length and width of the negative pressure layer 2 and the laminar flow ceiling body 1.

[0023] Sealing strips are arranged on the edges of the laminar flow ceiling body 1, the negative pressure layer 2, the gas flow guide layer 3 and the ventilation net cover 4 which contact each other.

[0024] As shown in the drawings, Figure 1 The laminar flow ceiling body 1 is arranged on the top of the operating room, the openings of the two long sides of the laminar flow ceiling body 1 are connected to the air inlet of the ventilation system of the operating room, the air treated by biochemical treatment enters the filter screen support 11 through the opening, and is filtered through the tubular filter screen 12, the tubular filter screen 12 arranged densely is provided with a large number of nanometer micropores uniformly distributed by the microporous membrane material, which can filter the solid particles in the air while basically not affecting the flux of the air, so as to achieve the function of high-speed filtration, different pore sizes of the tubular filter screen 12 can be selected according to the filtration grade, and the filter screen support 11 can be replaced to achieve rapid replacement and maintenance.

[0025] The filtered air is extracted by the negative pressure fan 21 of the negative pressure layer 2 and enters the gap between the negative pressure layer 21 and the gas flow guide layer 3, and then is uniformly distributed to the ventilation net cover 4 through the gas flow channel of the gas flow guide layer 3 and flows out, so as to achieve the purpose of uniform air supply of the air supply laminar flow ceiling structure, the negative pressure fan 21 is powered by a cable, the negative pressure fan cable is arranged along the corners of the air supply laminar flow ceiling structure and is sealed by a sealing rubber strip and a sealing groove to prevent contaminated air from flowing in through the gap, a plurality of gas flow rate sensors are arranged on the gas flow channel, the air flow rate in the gas flow channel is controlled by the threshold value of the gas flow rate sensor and the electrically controlled flow channel valve, so as to achieve air flow rate adjustment and realize the purpose of uniform air supply.

[0026] A through hole is arranged in the middle of the ventilation net cover 4 for installing lamps and other equipment.

[0027] In a possible embodiment, the filter screen support 11 is welded to the tubular filter screen 12, and the tubular filter screen 12 is provided with multiple specifications according to the pore size of the microporous membrane.

[0028] For example, the pore size of the tubular filter screen 12 is selected according to the particle size of the particulate matter to be filtered indoors.

[0029] In a possible embodiment, the negative pressure layer 2 is a concave structure, and the concave position of the concave structure is provided with multiple negative pressure fans 21 arranged side by side.

[0030] The gas flow channel is provided with multiple gas input ports and multiple gas output ports, and the multiple gas input ports are correspondingly arranged at the air outlets of the multiple negative pressure fans 21.

[0031] The gas output ports are arranged towards the ventilation mesh cover 4, and the multiple gas output ports are arranged in a rectangular equidistant manner on the air outlet surface of the ventilation mesh cover 4.

[0032] For example, the external air is drawn into the negative pressure layer 2 through the negative pressure fans arranged side by side in the middle, and is guided through the gas flow channel of the gas flow guiding layer 3, uniformly distributed to the air outlet surface of the ventilation mesh cover 4, and then uniformly and directionally flows out.

[0033] After the air passes through the negative pressure fans 21 of the negative pressure layer 2, it is input into the gas flow channel through the multiple gas input ports of the gas flow channel, and then is guided to the multiple gas output ports arranged in a rectangular equidistant manner on the air outlet surface of the ventilation mesh cover 4. Each gas flow channel is provided with a gas flow rate sensor, which detects the gas flow rate of each gas flow channel through the cooperation of the gas flow guiding controller. Then, the threshold value of the gas flow guiding controller is set to feedback control, and the air flow rate in the gas flow channel is controlled by the electrically controlled flow channel valve, so that the air flow rate output from each gas flow channel is the same, achieving the effect of uniform air outlet.

[0034] In a possible embodiment, the air outlet surface is a rectangular plate provided with multiple air permeable holes, and an adjusting plate is slidably arranged on the air outlet surface. The adjusting plate is arranged corresponding to the length and width of the air outlet surface, and the adjusting plate is provided with through holes corresponding to the air permeable holes. The adjusting plate is driven to slide by an adjusting motor, and the adjusting motor is connected to the ventilation mesh cover controller through wireless signals.

[0035] For example, the air outlet surface is covered with a regulating plate with the same hole position and aperture as the air outlet surface, and the regulating plate is controlled to slide on the air outlet surface by a remote control regulating motor through the ventilation grille controller. When the air outlet surface hole position completely coincides with the regulating plate hole position, the ventilation grille 4 reaches the maximum flow rate. When the flow rate needs to be reduced, the regulating plate is remotely controlled to be misaligned with the air outlet surface, so that the hole position is blocked, achieving the purpose of reducing the air flow rate.

[0036] While the preferred embodiments of the application have been described, additional variations and modifications can be made to the preferred embodiments by those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to encompass within their scope all such variations and modifications as are included within the spirit and scope of the application.

[0037] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all such modifications and changes be included within the scope of the application as claimed in the following claims and their equivalents.

Claims

1. A clean room air supply laminar ceiling structure, characterized by, The utility model relates to a layer flow ceiling body (1) is cuboid frame structure, two long side of layer flow ceiling body (1) symmetry is provided with opening, the opening is provided with a plurality of filter screen support (11) to layer flow ceiling body (1) inside direction, filter screen support (11) is provided with a plurality of tubular filter screen (12), tubular filter screen (12) is one-way opening's microporous membrane pipe, the opening is provided with isolation net (13) to layer flow ceiling body (1) outside direction, the frame of layer flow ceiling body (1) is provided with negative pressure layer (2), negative pressure layer (2) is attached filter screen support (11) and tubular filter screen (12) shape setting, negative pressure layer (2) is provided with a plurality of negative pressure fan (21), negative pressure layer (2) is provided with gas flow guide layer (3), gas flow guide layer (3) is provided with gas flow channel, gas flow velocity sensor and electric control flow valve, gas flow velocity sensor and electric control flow valve are connected gas flow guide controller through wireless signal, negative pressure layer (2) is provided with ventilation screen cover (4), ventilation screen cover (4) length width corresponds negative pressure layer (2) and layer flow ceiling body (1) length width setting. The edges of the layer flow ceiling body (1), negative pressure layer (2), gas flow guide layer (3) and ventilation screen cover (4) that contact each other are provided with sealing strips.

2. A clean room air supply laminar ceiling construction according to claim 1, wherein, The filter screen support (11) is welded to the tubular filter screen (12), and the tubular filter screen (12) is provided with multiple specifications according to the pore size of the microporous membrane.

3. A clean room air supply laminar ceiling construction according to claim 1, wherein, The negative pressure layer (2) is a concave structure, and the concave position of the concave structure is provided with a plurality of negative pressure fans (21), and a plurality of negative pressure fans (21) are arranged side by side.

4. A clean room air supply laminar ceiling construction according to claim 1, wherein, The gas flow channel is provided with a plurality of gas input ports and a plurality of gas output ports, and a plurality of gas input ports are correspondingly arranged at the air outlets of a plurality of negative pressure fans (21).

5. A clean room air supply laminar ceiling construction according to claim 1, wherein, The gas output ports are directed to the ventilation screen cover (4), and a plurality of gas output ports are arranged in a rectangular equidistant manner corresponding to the air outlet surface of the ventilation screen cover (4).

6. A clean room air supply laminar ceiling construction according to claim 5, wherein, The air outlet surface is a rectangular plate provided with a plurality of air holes, and an adjusting plate is slidably arranged on the air outlet surface, the adjusting plate is correspondingly arranged according to the length and width of the air outlet surface, the adjusting plate is provided with through holes corresponding to the air holes, the adjusting plate is driven to slide by an adjusting motor, and the adjusting motor is connected to a ventilation screen cover controller through a wireless signal.

7. A clean room air supply laminar ceiling construction according to claim 6, wherein, ​

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