CN216114535U - Medical grade return air inlet air purification device - Google Patents

Abstract

The utility model discloses a medical-grade air return inlet air purification device which comprises an outer frame component and an inner frame component, wherein the outer frame component and the inner frame component are both provided with ventilation openings; the inner frame assembly is positioned at the lower side in the outer frame assembly, a first filtering module is arranged in the inner frame assembly, and a second filtering module is arranged at the upper side in the outer frame assembly; a stepped mounting surface is arranged on the outer side of the outer frame assembly, and the stepped mounting surface sequentially comprises a first vertical stepped surface, a horizontal stepped surface and a second vertical stepped surface from bottom to top, wherein the second vertical stepped surface is inwards concave relative to the first vertical stepped surface to form a mounting space; the outer side of the outer frame component is designed by adopting the stepped mounting surface on the outer side, so that the air purification device can be conveniently replaced on the premise of preventing air leakage, and the air purification device does not need to be frequently integrally detached.

Description

Medical grade return air inlet air purification device

Technical Field

The utility model relates to the technical field of air purification, in particular to a medical air return inlet air purification device.

Background

At present, at the air return port of a ventilation system or an air-conditioning ventilation system in a public place or each occasion of a hospital with larger dust, a filter screen is generally arranged on a louver of an inner frame of an air return port so as to improve the environmental cleanliness, but a movable gap exists between the outer frame and the inner frame of the traditional air return port, and the air leakage phenomenon seriously reduces the actual filtering efficiency during use. In particular, in clean room air supply systems such as operating rooms and cleaning workshops, the requirements on air filtration of an air return inlet are stricter, the initial resistance is less than 50Pa, the once-through rate of microorganisms is less than 10 percent, and the once-weighing pass rate of particles is less than 5 percent according to the GB51039-2014 comprehensive hospital building design Specification. The return air louvers and filters must be sanitized or replaced about every month.

And traditional return air inlet tripe generally adopts hinge and spring bolt mode fixed, under the prerequisite that will guarantee the leakproofness, dismantles on the one hand and changes the troublesome poeration, and on the other hand, the easy part damage of frequent operation scrapes the flower, and this kind of damage is difficult to restoreing, seriously influences ventilation system's use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a medical air return inlet air purification device.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the air purification device for the medical-grade air return inlet comprises an outer frame component and an inner frame component, wherein the outer frame component and the inner frame component are provided with ventilation openings; the inner frame assembly is positioned at the lower side in the outer frame assembly, a first filtering module is arranged in the inner frame assembly, and a second filtering module is arranged at the upper side in the outer frame assembly; the frame subassembly outside is provided with the step installation face, step installation face from the bottom up is in proper order including first vertical ladder face, horizontal ladder face, the vertical ladder face of second, wherein the vertical ladder face of second is relative first vertical ladder face forms installation space to the indent.

According to the medical air return inlet air purification device provided by the utility model, the outer side of the outer frame component adopts the outer side stepped mounting surface design, so that the replacement of the filter module is convenient on the premise of ensuring that the air purification device does not leak air, and the air purification device does not need to be disassembled integrally frequently.

As some preferred embodiments of the present invention, the outer frame assembly is connected to the inner frame assembly through a rotating shaft, and a switch lock structure is further disposed between the outer frame assembly and the inner frame assembly.

As some preferred embodiments of the present invention, the switch lock structure includes a latch on the inner frame assembly and a push switch on the outer frame assembly.

As some preferred embodiments of the present invention, the switch lock structure includes a lock pin and a lock pin spring on the inner frame assembly, and the outer frame assembly is provided with a lock pin hole.

As some preferred embodiments of the present invention, the inner frame assembly is provided with louver blades.

As some preferred embodiments of the present invention, the inner frame assembly includes an inner frame cover and an inner frame mounting frame.

As some preferred embodiments of the present invention, the inner frame assembly includes a cartridge retaining tab.

As some preferred embodiments of the present invention, the inner frame member includes a cartridge chucking groove.

As some preferred embodiments of the present invention, the second filter module is provided with sealing cotton at the edge.

As some preferred embodiments of the present invention, the second filter module is provided with a brace.

The utility model has the beneficial effects that:

1. the frame subassembly presents the double step, and first vertical ladder facial features inboard is equipped with the hinge cassette, and the vertical ladder facial features outside of second is equipped with the push type switch, and the vertical ladder facial features inboard of second is medical grade filter's installation inside groove, and medical grade filter installation is the very end of whole module again promptly, can make the return air all pass through the filter, has avoided the air leakage phenomenon.

2. The outermost layer of the frame of the medical filter is sealing cotton, a handle is arranged between the frame and the PP frame, the medical filter is convenient to disassemble when the filter is replaced, the outer dimension of the medical filter is 1-2 mm larger than the dimension of the inner groove of the outer frame, the medical filter is in interference fit with the inner groove of the outer frame when being assembled, the sealing effect of the filtering module is enhanced,

3. frame subassembly and inside casing subassembly are connected with the push type switch through the hinge buckle, and when locking completely, inside casing subassembly panel and frame subassembly panel parallel and level when need to be changed and just imitate filter screen or medical grade filter, only need on the inside casing panel that the push type switch corresponds, impel 2 ~ 3 mm's the stroke of unblanking, can open the inside casing subassembly, easy operation is the aspect of.

4. The module adopts the combination of the primary filter screen and the medical filter, meets the requirements that the primary resistance is less than 50Pa, the once-through rate of microorganisms is less than 10 percent and the once-through rate of particles is less than 5 percent, and can effectively prolong the service life of the filter.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of the present invention in an open state;

FIG. 2 is a front view of the present invention in the open position;

FIG. 3 is a front view of the present invention in the closed position;

FIG. 4 is an enlarged partial view of the latch position in the open condition of the present invention;

fig. 5 is a partially enlarged view of the position of the inner frame mounting frame in the open state of the present invention.

Reference numerals:

the outer frame assembly 100, a stepped mounting surface 110, a first vertical stepped surface 111, a horizontal stepped surface 112, a second vertical stepped surface 113 and a mounting space 114;

the inner frame assembly 200, the mortise lock 210, the lock pin 220, the louver air guide sheet 230, the fixing strip 231, the inner frame cover 240, the inner frame mounting frame 250, the filter element clamping sheet 260, the filter element clamping edge groove 270 and the push switch 280;

a first filter module 300;

a second filtration module 400, a brace 410.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Rather, the utility model can be practiced without these specific details, i.e., those skilled in the art can more effectively introduce the essential nature of their work to others skilled in the art using the description and presentation herein.

Furthermore, it should be noted that the terms "front side", "rear side", "left side", "right side", "upper side", "lower side", and the like used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a specific part, respectively, and those skilled in the art should not understand that the technology beyond the scope of the present application is simply and innovatively adjustable in the directions.

If the description of "first", "second", etc. is used for the purpose of distinguishing technical features, it is not intended to indicate or imply relative importance or to implicitly indicate the number of indicated technical features or to implicitly indicate the precedence of the indicated technical features.

It should be understood that the detailed description and specific examples, while indicating the scope of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. Well-known manufacturing methods, control procedures, component dimensions, material compositions, pipe arrangements, etc., have not been described in detail since they are readily understood by those of ordinary skill in the art, in order to avoid obscuring the present invention.

Fig. 1 is a perspective view of an embodiment of the present invention in an open state, and referring to fig. 1, an embodiment of the present invention provides a medical-grade air return opening air purification device, which comprises an outer frame assembly 100 and an inner frame assembly 200, wherein the outer frame assembly 100 and the inner frame assembly 200 are provided with ventilation openings for ensuring the air flow in the purification device to pass through. The external frame assembly 100 may be embedded in a wall or other installation position, and the external frame assembly 100 is connected with the ventilation duct.

Further, referring to fig. 2 and 3, the inner frame assembly 200 is located at the lower side of the inner frame assembly 100, the first filter module 300 is disposed in the inner frame assembly 200, and the second filter module 400 is disposed at the upper side of the inner frame assembly 100. First filter module 300, second filter module 400 are as this purifier's filter module, and this purifier purifies the filtration through this purifier's air current through first filter module 300, second filter module 400 promptly.

Still further, a stepped mounting surface 110 is arranged on the outer side of the outer frame assembly 100, the stepped mounting surface 110 sequentially includes, from bottom to top, a first vertical stepped surface 111, a horizontal stepped surface 112, and a second vertical stepped surface 113, wherein the second vertical stepped surface 113 is recessed inward relative to the first vertical stepped surface 111 to form a mounting space 114. The installation space 114 is a working space between the inner wall of the ventilation opening and the second vertical stepped surface 113, which not only facilitates the assembly and disassembly of the second filter module 400, but also can install the switch and fixing device between the inner frame assembly 200 and the outer frame assembly 100.

When it is necessary to replace the filter module, the first filter module 300 can be replaced by simply opening the inner frame assembly 200, and then the second filter module 400 can be easily replaced through the working space left by the installation space 114.

The disclosure of the above-mentioned medical grade air-return opening air-purifying device is only a preferred embodiment of the present invention, and is only used for illustrating the technical solution of the present invention, and not for limiting the same. It will be understood by those skilled in the art that the foregoing technical solutions may be modified or supplemented by the prior art, or some of the technical features may be replaced by equivalents; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Reference will now be made in detail to some embodiments, wherein "an embodiment" is referred to herein as a particular feature, structure, or characteristic that may be included in at least one implementation of the present application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Furthermore, the details representative of one or more embodiments are not necessarily indicative of any particular order, nor are they intended to be limiting.

In some embodiments, the outer frame assembly 100 is connected to the inner frame assembly 200 through a hinge, and a switch lock structure is further disposed between the outer frame assembly 100 and the inner frame assembly 200.

In this embodiment, optionally, the rotating shaft is a hinge buckle.

In this embodiment, optionally, the rotation axis between the outer frame assembly 100 and the inner frame assembly 200 is located at the left side of the outer frame assembly 100 and the inner frame assembly 200, and the switch lock structure between the outer frame assembly 100 and the inner frame assembly 200 is located at the right side of the outer frame assembly 100 and the inner frame assembly 200.

In this embodiment, optionally, referring to fig. 2, when the inner frame assembly 200 is in the closed position and the switch lock structure is fully locked, the lower side panel of the inner frame assembly 200 is flush with the lower side panel of the outer frame assembly 100.

In some embodiments, the switch lock structure includes a latch 210 on the inner frame assembly 200 and a push switch 280 on the outer frame assembly 100. When the inner frame assembly 200 needs to be opened, the inner frame assembly 200 can be opened only by pushing the 2-3 mm unlocking stroke on the lower side panel of the inner frame assembly 200 corresponding to the push switch 280.

In this embodiment, the push switch 280 may optionally have a spring clip built therein for clipping the latch 210 of the inner frame assembly 200.

In some embodiments, referring to fig. 4, the locking and unlocking structure includes a locking pin 220 and a locking pin spring on the inner frame assembly 200, and a locking pin hole is formed on the outer frame assembly 100.

In some embodiments, referring to fig. 2 and 4, the louver blades 230 are disposed on the inner frame assembly 200.

In this embodiment, optionally, the louver blades 230 are connected to the inner frame assembly 200 by fixing bars 231, wherein the louver blades 230 are sleeved in the holes of the fixing bars 231, and the fixing bars 231 and the louver blades 230 are locked in the inner frame assembly 200 by self-tapping screws.

In some embodiments, the inner frame assembly 200 includes an inner frame cover 240 and an inner frame mounting frame 250, and the first filter module 300 is mounted in the inner frame mounting frame 250.

In some embodiments, the inner frame assembly 200 includes a filter cartridge retaining tab 260 for securing the first filter module 300. Wherein the cartridge retaining tab 260 is removable.

In this embodiment, optionally, the filter element positioning piece 260 is "L" shaped, and the filter element positioning piece 260 includes a first positioning piece bending edge and a second positioning piece bending edge, wherein the first positioning piece bending edge is connected to the inner frame mounting frame 250 of the inner frame assembly 200, and the second positioning piece bending edge is used for clamping the first filter module 300.

In some embodiments, referring to fig. 5, the inner frame assembly 200 includes a cartridge chucking groove 270 for holding the rim of the first filter module 300.

In this embodiment, optionally, the filter element clipping groove 270 includes a first clipping rib and a second clipping rib, and the inner frame mounting frame 250, the first clipping rib and the second clipping rib form an "F" -shaped structure, which is enough to ensure that the first filtering module 300 is stably mounted.

In some embodiments, the first filter module 300 is a stainless steel nylon mesh or an aluminum frame pp filter screen, and is used to primarily filter dust particles with a particle size of 0.5 μm or more, which is beneficial to prolonging the service life of the second filter module 400 on the premise of ensuring the purifying and filtering effects.

In some embodiments, second filtration module 400 is made of high efficiency low wind resistance electrostatic composite cotton above H11.

In some embodiments, the second filter module 400 is provided with pleated V-shaped pleats for increasing the filtering area.

In some embodiments, PET skeletons are attached to both sides of the second filter module 400 to reinforce the overall strength of the second filter module 400.

In some embodiments, the second filter module 400 is installed in an inner groove of the outer frame assembly 100, wherein the outer dimension of the second filter module 400 needs to be 1mm to 2mm larger than the inner groove of the outer frame assembly 100, so that the second filter module 400 forms an interference fit with the inner groove of the outer frame assembly 100 when assembled, the sealing effect between the second filter module 400 and the outer frame assembly 100 is enhanced, and the filtering reliability of the second filter module 400 is further ensured.

In some embodiments, the edge of the second filter module 400 is provided with a sealing cotton to improve the sealing effect of the second filter module 400.

In some embodiments, referring to fig. 1, the second filter module 400 is provided with a pull strip 410, and the second filter module 400 can be removed by grasping the pull strip 410 for easy removal when replacing.

In some embodiments, the following medical grade filters are used by presetting the second filter module 400, and the filtration efficiency and resistance values measured when the second filter module 400 is changed, for example, by the density or thickness thereof, at 600 × 250mm outside the outer dimension are shown in the following table one:

table 1 efficiency and resistance of different parameter products at 720 air volume:

according to the GB51039-2014 comprehensive hospital building design code, the initial resistance is required to be less than 50Pa, the once-through rate of microorganisms is less than 10 percent, and the once-through rate of particles by weight is less than 5 percent. It was concluded that the process design parameters for the medical grade filter were 10mm dense pleat spacing and 600 x 250 x 50mm overall size, which was satisfactory.

The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a medical grade return air inlet air purification device which characterized in that: the air conditioner comprises an outer frame assembly (100) and an inner frame assembly (200), wherein the outer frame assembly (100) and the inner frame assembly (200) are provided with ventilation openings;

the inner frame assembly (200) is positioned at the lower side in the outer frame assembly (100), a first filtering module (300) is arranged in the inner frame assembly (200), and a second filtering module (400) is arranged at the upper side in the outer frame assembly (100);

frame subassembly (100) outside is provided with step installation face (110), step installation face (110) from the bottom up is in proper order including first vertical ladder face (111), horizontal ladder face (112), the vertical ladder face of second (113), wherein the vertical ladder face of second (113) is relative first vertical ladder face (111) is to indent formation installation space (114).

2. The medical grade return air inlet air purification device of claim 1, characterized in that: the outer frame assembly (100) is connected with the inner frame assembly (200) through a rotating shaft, and a switch lock structure is further arranged between the outer frame assembly (100) and the inner frame assembly (200).

3. The medical grade return air inlet air purification device of claim 2, characterized in that: the switch lock structure comprises a mortise lock (210) on the inner frame assembly (200) and a push type switch (280) on the outer frame assembly (100).

4. The medical grade return air inlet air purification device of claim 2, characterized in that: the switch lock structure comprises a lock pin (220) and a lock pin spring on the inner frame assembly (200), and a lock pin hole is formed in the outer frame assembly (100).

5. The medical grade return air inlet air purification device of claim 1, characterized in that: the inner frame assembly (200) is provided with a louver air guide plate (230).

6. The medical grade return air inlet air purification device of claim 1, characterized in that: the inner frame assembly (200) comprises an inner frame surface cover (240) and an inner frame mounting frame (250).

7. The medical grade return air inlet air purification device of claim 1, characterized in that: the inner frame assembly (200) includes a cartridge retaining tab (260).

8. The medical grade return air inlet air purification device of claim 1, characterized in that: the inner frame assembly (200) includes a cartridge chucking groove (270).

9. The medical grade return air inlet air purification device of claim 1, characterized in that: the edge of the second filtering module (400) is provided with sealing cotton.

10. The medical grade return air inlet air purification device of claim 1, characterized in that: a brace (410) is arranged on the second filter module (400).

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