Ultralow-resistance multifunctional medical return air purification device

Abstract

The utility model provides an ultralow-resistance multifunctional medical return air purification device which comprises an outer frame, a shutter, a filter element, a door lock device and an anti-collision clamping spring. The outer frame comprises an upper-layer frame body and a lower-layer frame body which are connected in sequence, and a filter element separation blade is arranged on the connecting surface of the upper-layer frame body and the lower-layer frame body; the filter element is mounted in the lower-layer frame body, and the shutter is mounted on the upper end surface of the upper-layer frame body; the door lock device comprises a lock body and a lock catch, the lock body is fixed on the upper-layer frame body, and the lock catch is fixed on the shutter; the anti-collision clamping spring comprises two torsion arms, one torsion arm of the anti-collision clamping spring is fixed to the inner wall of the upper-layer frame body, and the two torsion arms of the anti-collision clamping spring are tightly attached to the upper-layer frame body and the louver respectively. According to the utility model, the shutter is limited, so that the filter element is prevented from being crushed; the shutter is convenient to open to maintain the filter element, mistaken touch is prevented, and the shutter can be kept locked when strong vibration or accidental deflection of the device occurs; when the filter element separation blade fixes the filter element, the strength is higher, and the operation is more convenient; the filter element is low in resistance, efficient and stable in efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air purification, and in particular to an ultra-low resistance multi-functional medical return air purification device. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) equipment is a widely used and important piece of equipment in public buildings, accounting for 50%-60% of the building's total electricity consumption. From the perspective of improving energy efficiency and reducing energy consumption, reducing the operating energy consumption of air conditioning systems is of great significance for reducing carbon emissions.

[0003] GB 50073-2013, the "Code for Design of Cleanrooms," stipulates that when no harmful substances are generated during the production process, the cleanroom air conditioning system should utilize return air as much as possible to save energy, while ensuring the amount of fresh air and maintaining the pressure differential in the cleanroom. GB 51039-2014, the "Code for Design of General Hospital Buildings," sets forth specific requirements for return air devices, stipulating that the return air inlets of centralized air conditioning systems and fan coil units must be equipped with filtration equipment with an initial resistance of less than 50 Pa, a single-pass microbial throughput of no more than 10%, and a single-pass particulate matter throughput of no more than 5%. At the beginning of the COVID-19 pandemic, the US ASHRAE proposed that return air filtration in public places should meet a requirement of at least F7 (equivalent to F7).

[0004] However, despite the promulgation of the "GB 51039-2014 Code for Design of General Hospital Buildings" nearly ten years ago, few hospitals truly recognize the significance of the general medical environment control measures mentioned in the code. Even architectural design institutes do not pay enough attention to it, resulting in most existing general medical departments failing to meet the code's requirements for ventilation and return air purification devices. Currently, most hospitals use simple hinged return air vent filters. In these simple devices, the louvers are connected to the frame with pivot pins, which act as both latches and pivots, causing significant swaying and vibration and noise when the airflow is fully open. Furthermore, during periods of strong vibration or maintenance, the filter element rests on top of the louvers, posing a safety hazard as the louvers and filter element could easily fall off together. Summary of the Invention

[0005] To address the aforementioned problems, this utility model provides an ultra-low resistance, multi-functional medical return air purification device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An ultra-low resistance multi-functional medical return air purification device includes an outer frame, louvers, filter element, door lock device, and anti-collision spring clips.

[0008] The outer frame includes an upper frame and a lower frame connected in sequence. A filter element baffle is provided on the connecting surface of the upper frame and the lower frame. The filter element baffle is rotatably engaged with the outer frame. The filter element is installed in the lower frame and between the filter element baffle and the lower end face of the lower frame. The louvers are hinged and installed on the upper end face of the upper frame.

[0009] The door lock device includes a lock body and a latch. The lock body is fixed to the upper frame, and the latch is correspondingly fixed to the louver.

[0010] The anti-collision spring is a torsion spring, which includes two torsion arms. The anti-collision spring is disposed on the inner side of the upper frame. One torsion arm of the anti-collision spring is fixed to the inner wall of the upper frame. The two torsion arms of the anti-collision spring are respectively close to the inner wall of the upper frame and the side of the louver facing the upper frame.

[0011] Furthermore, the upper frame and the lower frame are a stepped double-layer structure. The lower frame is provided with a filter element mounting slot, which is located on the lower end face of the lower frame. The opening of the filter element mounting slot faces upward. An elastic sealing strip is provided in the filter element mounting slot. The filter element baffle presses against the filter element and tightens the elastic sealing strip to seal and install the filter element and the lower frame.

[0012] Furthermore, the connection between the upper frame and the lower frame has a horizontal end face, and the two filter element baffles are correspondingly arranged on both sides of the horizontal end face. Each filter element baffle includes a crossbar and a connecting rod. There are two crossbars. One end of each crossbar is hinged to the side of the horizontal end face facing the upper frame using countersunk rivets, and the other ends of the two crossbars are respectively hinged to both ends of the connecting rod using countersunk rivets. A gasket is sandwiched between the crossbar at the hinge and the horizontal end face or the connecting rod.

[0013] Furthermore, the door locking device includes a spring door lock and an elephant trunk lock; the spring door lock includes a spring bolt latch and a spring latch body; the elephant trunk lock includes an elephant trunk latch and an elephant trunk lock body; the spring bolt latch and the elephant trunk latch are fixed at the edge of the louver, and the spring latch body and the elephant trunk lock body are correspondingly fixed on the upper frame.

[0014] Furthermore, the filter element is made of nano-filter paper composite anti-mildew and antibacterial agent folded into a "W" shape.

[0015] Furthermore, the louver includes louver blades and a louver frame. The louver blades are fixed to the louver frame. A reinforcing connecting rod is also provided on the inner side of the louver frame to connect two opposite sides of the louver frame. The louver frame is connected to the upper end face of the upper frame through a hinge.

[0016] Furthermore, the upper frame and the lower frame are riveted together using rivet bolts, and the riveting joint has a through hole. A steel wire is passed through the through hole to fix the return air purification device to the roof.

[0017] Furthermore, the inner side of the upper frame is also provided with anti-collision clips, which are attached to the surface of the louvers facing the inner side of the outer frame.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The louvers of this utility model are connected to the outer frame by spring hinges. Anti-collision clips and anti-collision springs are set on the inner side of the outer frame to limit the louvers and prevent them from crushing the filter element installed at the bottom of the outer frame when the louvers are closed. When vibration occurs, the anti-collision springs can effectively suppress the vibration and reduce the noise of the filter device.

[0020] 2. The blinds and the outer frame are connected by a double-locking mechanism, with a spring latch and a push-button elephant trunk lock used simultaneously. When opening the blinds, the spring latch is opened first, and then the elephant trunk lock is pressed. This makes it convenient to open the blinds to maintain the filter, and also prevents people from accidentally touching the elephant trunk lock to open the blinds and causing risks. The blinds can also remain locked in the event of strong vibration or accidental tilting of the device.

[0021] 3. The outer frame has a stepped double-layer structure. The lower frame has a filter element mounting slot, and the upper frame is connected to the lower frame by rivets. A filter element baffle is set on the connection surface. The filter element baffle has a linkage structure. When installing or removing the filter element, simply open the louvers, move the filter element baffle close to the inner wall of the outer frame, loosen the filter element, and then remove it. Installation is convenient. Using the filter element baffle to fix the filter element provides higher strength, prevents the filter element from falling off, and avoids safety hazards.

[0022] 4. The filter element uses nano-filter paper composite anti-mildew and antibacterial agent folded into a "W" shape, which has both particulate matter removal and antibacterial and anti-mildew functions. The nano-filter paper gives it excellent performance of low resistance, high efficiency and stable efficiency. The composite anti-mildew and antibacterial agent can effectively prevent the filter element from getting moldy and breeding bacteria during use, and causing secondary pollution. Attached Figure Description

[0023] Figure 1 This is a top view of an ultra-low resistance multi-functional medical return air purification device according to the present invention;

[0024] Figure 2This is a front view of an ultra-low resistance multi-functional medical return air purification device according to the present invention.

[0025] Figure 3 This is a schematic diagram of the anti-collision spring clamping state of an ultra-low resistance multi-functional medical return air purification device according to this utility model;

[0026] Figure 4 This is a schematic diagram of the filter element baffle connection structure of an ultra-low resistance multi-functional medical return air purification device according to this utility model. Detailed Implementation

[0027] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0028] Please refer to the reference. Figure 1 , Figure 2 , Figure 3 and Figure 4 An embodiment of the present invention provides an ultra-low resistance multifunctional medical return air purification device, comprising an outer frame 100, louvers 200, filter element 300, door lock device, and anti-collision spring 400.

[0029] The outer frame 100 includes an upper frame 110 and a lower frame 120 connected in sequence. A filter element baffle 130 is provided on the connecting surface of the upper frame 110 and the lower frame 120. The filter element baffle 130 is rotatably engaged with the outer frame 100, allowing for movement of the filter element baffle 130 to avoid obstructing the installation and removal of the filter element 300, facilitating its use. The filter element 300 is installed inside the lower frame 120, between the filter element baffle 130 and the lower end face of the lower frame 120, ensuring a secure installation of the filter element 300 and preventing the risk of it falling during use, thus reducing safety hazards. The louvers 200 are connected to the upper end face of the upper frame 110 using hinges 500; the louvers 200 evenly disperse the purified return air, improving the comfort of the equipment.

[0030] The door lock device includes a lock body and a latch. The lock body is fixed to the upper frame 110, and the latch is correspondingly fixed to the louver 200. This facilitates locking the louver 200, ensuring a secure lock and preventing the louver from opening.

[0031] The anti-collision spring 400 is a torsion spring, comprising two torsion arms 410. The anti-collision spring 400 is disposed on the inner side of the upper frame 110. One torsion arm 410 of the anti-collision spring 400 is fixed to the inner wall of the upper frame 110, while the two torsion arms 410 are respectively pressed against the inner wall of the upper frame 410 and the side of the louver 200 facing the upper frame 110. The anti-collision spring 400 limits the movement of the louver 200, preventing it from damaging the filter element installed at the bottom of the outer frame 100 when closed. When vibration occurs, the anti-collision spring 400 effectively suppresses vibration and reduces the noise of this purification device.

[0032] The upper frame 110 and the lower frame 120 are a stepped double-layer structure. The lower frame 120 is provided with a filter element mounting slot 121, which is located on the lower end face of the lower frame 120. The opening of the filter element mounting slot 121 faces upward. An elastic sealing strip 122 is provided inside the filter element mounting slot 121. The filter element baffle 130 presses against the filter element 300 to tighten the elastic sealing strip 122, sealing the filter element 300 and the lower frame 120. This ensures that the filter element 300 is firmly installed, has good sealing performance, good return air purification effect, and prevents pollutants from escaping.

[0033] The connection between the upper frame 110 and the lower frame 120 has a horizontal end face 140. Two filter element baffles 130 are respectively arranged on both sides of the horizontal end face 140 to ensure that the filter element is subjected to uniform force on both sides and to ensure good sealing between the filter element and the lower frame 120. The filter element baffles 130 provide good support for the filter element and prevent the filter element 300 and the louver 200 from falling off together during strong vibration or maintenance. The filter element baffle 130 includes a crossbar 131 and a connecting rod 132. There are two crossbars 131. One end of the crossbar 131 is hinged to the side of the horizontal end face 140 facing the upper frame 110 using countersunk rivets. The other ends of the two crossbars 131 are respectively hinged to the two ends of the connecting rod 132 using countersunk rivets. A gasket 133 is sandwiched between the crossbar 131 at the hinge and the horizontal end face 140 or the connecting rod 132. The gasket 133 is made of a hard and smooth material. The filter element is hinged using countersunk rivets, ensuring that the rivets are retracted into the countersunk holes and preventing exposed rivets from damaging the filter element. The filter element baffle 130 has a simple structure that does not obstruct airflow. It uses a hard and smooth gasket 133 to ensure that the crossbar 131 can rotate with the horizontal end face 140 and the connecting rod 132, reducing wear and allowing the filter element baffle 130 to be rotated and moved. When assembling or disassembling the filter element 300, there is no need to disassemble the purification device. Simply open the louver 200 to operate, which is simple and efficient. The filter element baffle 130 has a linkage structure, which provides higher strength when fixing the filter element and makes operation more convenient.

[0034] The door locking device includes a spring lock and an elephant trunk lock; the spring lock includes a spring bolt latch 610 and a spring latch body 620; the elephant trunk lock includes an elephant trunk latch 630 and an elephant trunk lock body 640; the spring bolt latch 610 and the elephant trunk latch 630 are fixed to the edge of the louver 200, and the spring latch body 620 and the elephant trunk lock body 640 are correspondingly fixed to the upper frame 110. The double-lock switch design facilitates opening the louver 200 to maintain the filter element 300, while preventing accidental activation of the elephant trunk lock and potential risks. The louver also remains locked in the event of strong vibration or accidental misalignment.

[0035] The filter element 300 is constructed using nano-filter paper composite anti-mold and antibacterial agent folded into a "W" shape. The nano-filter paper imparts excellent properties such as low resistance, high efficiency, and stable efficiency, while the composite anti-mold and antibacterial agent effectively prevents the filter element 300 from becoming moldy and breeding bacteria during use, thus preventing secondary pollution.

[0036] The louver 200 includes louver blades 210 and a louver frame 220. The louver blades 210 are fixed to the louver frame 220. A reinforcing connecting rod 221 is also provided on the inner side of the louver frame 220, connecting two opposite sides of the louver frame 220. The louver frame 220 is connected to the upper end face of the upper frame 110 via a hinge 500. The louver 200 has high structural strength, is not easily damaged, and extends the service life of the equipment.

[0037] The upper frame 110 and the lower frame 120 are riveted together using a rivet-end screw 150. The riveting joint has a through hole, through which a steel wire is threaded to secure the return air purification device to the roof. The rivet-end screw 150 is a commonly used riveting component, comprising a rivet and an anchor nut. The rivet is threaded into the anchor nut. In use, holes are first drilled at corresponding positions on the upper and lower frames. The rivet-end screw is then inserted into the holes, and the rivet is tightened. Pulling the rivet compresses the anchor nut longitudinally, creating a protruding deformation on the end surface, thus achieving the riveting. After completion, the rivet is unscrewed through the thread, leaving a hole at the center of the anchor nut at the riveting joint. This ensures that the device has a point of application for installation force, facilitating installation and fixation with steel wire. This makes the return air purification device more securely fixed to the roof, improving its usability.

[0038] The inner side of the upper frame 110 is also provided with anti-collision clips 160, which are attached to the surface of the louver 200 facing the inner side of the outer frame. The anti-collision clips 160 limit the louver 200 to prevent it from crushing the filter element 300, suppress vibration, and reduce vibration noise.

[0039] Installing this return air purification device includes:

[0040] 1) Engage and lock the spring bolt latch 610;

[0041] 2) Press the two elephant trunk-shaped latches 630 on the venetian blind 200, and the venetian blind will pop out under the action of the elephant trunk-shaped latches;

[0042] 3) Place the filter element 300 flat into the lower frame 120;

[0043] 4) Rotate the filter element baffle 130 to the middle position of the outer frame 100. At this time, the crossbar 131 is perpendicular to the side wall of the upper frame 120. The filter element baffle 130 abuts against the filter element 300 and presses the elastic sealing strip 122. The elastic sealing strip 122 on the filter element 200 is used to fix the filter element baffle 130 in this position when it is pressed, so as to ensure that the filter element 200 is sealed and fixed firmly.

[0044] 5) Press the elephant trunk lock 630 position of the louver 200, the elephant trunk lock closes, and the two torsion arms 410 of the anti-collision spring 400 are respectively attached to the outer frame side wall and the louver.

[0045] 6) Close the spring latch lock body 620 and lock the louver 200 again;

[0046] 7) Use a steel wire to pass through the through hole after fixing the Latin screw 150 to fix the return air purification device to the roof.

[0047] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A low-resistance, multi-functional medical return air purification device, characterized in that: Includes outer frame, louvers, filter element, door lock device, and anti-collision spring clips; The outer frame includes an upper frame and a lower frame connected in sequence. A filter element baffle is provided on the connecting surface of the upper frame and the lower frame. The filter element baffle is rotatably engaged with the outer frame. The filter element is installed in the lower frame and between the filter element baffle and the lower end face of the lower frame. The louvers are hinged and installed on the upper end face of the upper frame. The door lock device includes a lock body and a latch. The lock body is fixed to the upper frame, and the latch is correspondingly fixed to the louver. The anti-collision spring is a torsion spring, which includes two torsion arms. The anti-collision spring is disposed on the inner side of the upper frame. One torsion arm of the anti-collision spring is fixed to the inner wall of the upper frame. The two torsion arms of the anti-collision spring are respectively close to the inner wall of the upper frame and the side of the louver facing the upper frame.

2. The ultra-low resistance multi-functional medical return air purification device as described in claim 1, characterized in that: The upper frame and the lower frame are a stepped double-layer structure. The lower frame is provided with a filter element mounting slot, which is located on the lower end face of the lower frame. The opening of the filter element mounting slot faces upward. An elastic sealing strip is provided in the filter element mounting slot. The filter element baffle presses against the filter element and tightens the elastic sealing strip to seal and install the filter element and the lower frame.

3. The ultra-low resistance multi-functional medical return air purification device as described in claim 2, characterized in that: The connection between the upper frame and the lower frame has a horizontal end face. Two filter element baffles are correspondingly arranged on both sides of the horizontal end face. Each filter element baffle includes a crossbar and a connecting rod. There are two crossbars. One end of each crossbar is hinged to the side of the horizontal end face facing the upper frame using countersunk rivets. The other ends of the two crossbars are respectively hinged to both ends of the connecting rod using countersunk rivets. A gasket is sandwiched between the crossbar at the hinge and the horizontal end face or the connecting rod.

4. The ultra-low resistance multi-functional medical return air purification device as described in claim 1, characterized in that: The door locking device includes a spring door lock and an elephant trunk lock; the spring door lock includes a spring bolt latch and a spring latch body; the elephant trunk lock includes an elephant trunk latch and an elephant trunk lock body; the spring bolt latch and the elephant trunk latch are fixed at the edge of the louver, and the spring latch body and the elephant trunk lock body are correspondingly fixed on the upper frame.

5. The ultra-low resistance multi-functional medical return air purification device as described in claim 1, characterized in that: The filter element is made of nano-filter paper composite anti-mildew and antibacterial agent folded into a "W" shape.

6. The ultra-low resistance multi-functional medical return air purification device as described in claim 1, characterized in that: The louver includes louver blades and a louver frame. The louver blades are fixed to the louver frame. A reinforcing connecting rod is also provided on the inner side of the louver frame to connect two opposite sides of the louver frame. The louver frame is connected to the upper end face of the upper frame through a hinge.

7. The ultra-low resistance multi-functional medical return air purification device as described in claim 1, characterized in that: The upper frame and the lower frame are riveted together using rivet bolts. The riveting joint has a through hole, through which a steel wire is used to fix the return air purification device to the roof.

8. The ultra-low resistance multi-functional medical return air purification device as described in claim 1, characterized in that: The inner side of the upper frame is also provided with anti-collision clips, which are attached to the surface of the louver facing the inner side of the outer frame.

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