An air purification device with a filter screen that is easy to clean

Abstract

The utility model discloses an air purification device convenient to clean filter screen, including outer frame, still be equipped with inner frame in outer frame, and inner frame can separate in outer frame, and the front and back surface of inner frame is equipped with first air vent and second air vent respectively, and first filter screen and second filter screen are installed in inner frame respectively, and the filter medium is installed between first filter screen and second filter screen, and the surface of inner frame is equipped with at least two sockets, and the filter medium selects one of two sockets and separates out, the specific beneficial effect of the utility model is: based on the structure that inner frame can separate in outer frame, and at least two sockets of inner frame surface setting, and user can select the filter medium from specific socket and take out alone, and it is convenient to flush first filter screen or second filter screen, and can independent cleaning or replacement filter medium, prolongs cleaning efficiency and promotes 60% or more, realizes filter screen layering independent maintenance.

Description

Technical Field

[0001] This utility model relates to the field of air purifier technology, and in particular to an air purification device that facilitates cleaning of the filter. Background Technology

[0002] Occupants of buildings typically open their windows to allow fresh air into their homes, workplaces, or other enclosed spaces. However, in many places, such as densely populated areas in China or India, outdoor air contains high levels of air pollutants. New filtration solutions are needed to remove pollutants from the air before it enters indoor spaces. Outdoor pollutants may include large particles such as pollen, dust, and mold spores, as well as smaller particles such as PM2.5, bacteria, and viruses. In some places, gaseous outdoor pollutants include odors, ozone, and other substances.

[0003] To address the aforementioned problems, several solutions exist; one of them is: the State Intellectual Property Office has published a patent entitled "Uniformly Expandable Air Filter" (application number 201580045917.6). This structure comprises: a filter media assembly capable of expanding from a collapsed state to an expanded state, the filter media assembly including a pleated filter media with multiple pleats; and an expandable element connecting at least some of the multiple pleats; wherein the filter media assembly expands substantially uniformly from the collapsed state to the expanded state. This structure achieves a filtering effect.

[0004] The aforementioned uniformly expandable air filter still has shortcomings:

[0005] 1. Insufficient ease of maintenance: Existing air filters generally adopt an integrated structure. Cleaning or replacing the filter screen requires disassembling the entire filter device, which is complicated and can easily damage the sealing structure, increasing the user's maintenance costs.

[0006] Second, limited functionality: The comparative document focuses on the "uniform expansion" performance of the filter media, but does not address the need for layered cleaning of the filter. Users cannot independently clean specific filter layers for different types of pollution (such as large particulate dust and PM2.5), resulting in low maintenance efficiency.

[0007] 3. Poor structural adaptability: Traditional frames lack modular design, cannot flexibly adapt to filter media of different thicknesses, and are prone to affecting airtightness due to inaccurate positioning during resetting. Summary of the Invention

[0008] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an air purification device that facilitates filter cleaning, enabling independent maintenance of filter layers, improving installation sealing and positioning accuracy, and reducing long-term operating costs.

[0009] This utility model also provides an air purification device that facilitates filter cleaning, including an outer frame and an inner frame inside the outer frame. The inner frame is separable from the outer frame. The front and rear surfaces of the inner frame are respectively provided with a first air vent and a second air vent. A first filter and a second filter are respectively installed inside the inner frame. A filter medium is installed between the first filter and the second filter. The surface of the inner frame is provided with at least two insertion ports. The filter medium is separated out from one of the two insertion ports.

[0010] Furthermore, the outer surface of the outer frame is provided with a connecting part.

[0011] Furthermore, the connecting part is also provided with a screw hole.

[0012] Furthermore, the outer surface of the outer frame is also provided with at least two sponges.

[0013] Specifically, the sponges are arranged symmetrically.

[0014] Furthermore, the inner surface of the outer frame is provided with a slot, and the edge of the inner frame is placed in the slot.

[0015] Specifically, one side surface of the inner frame is provided with a first pin and a second pin.

[0016] Specifically, the length of the first pin is greater than the length of the second pin.

[0017] Specifically, the length of the first pin is less than the length of the second pin.

[0018] Specifically, the pore size of the first filter screen is smaller than that of the second filter screen.

[0019] This utility model achieves significant improvements through the above-mentioned technical means, with the following specific beneficial effects:

[0020] 1. Enables independent maintenance of filter layers: Based on the structure of the inner frame being separable from the outer frame, and at least two slots on the surface of the inner frame, users can choose to remove the filter media separately from a specific slot, which is convenient for rinsing the first or second filter screen. The filter media can be cleaned or replaced independently, extending the cleaning efficiency by more than 60%.

[0021] II. Improved installation sealing and positioning accuracy: The slots on the inner surface of the outer frame and the edge of the inner frame are matched to ensure zero offset when the inner frame is reset; the differentiated length design of the first and second pins forms a physical anti-misinstallation structure to avoid airflow leakage caused by reverse installation; symmetrically distributed sponge is compressed and filled to fill the gap between the outer frame and the mounting frame of the air purifier, and the pollutant bypass rate is reduced by up to 35% in actual tests.

[0022] 3. Expanding the applicable scenarios of the equipment: The connecting parts and screw holes of the outer frame support multiple installation methods inside the air purifier; the modular inner frame is compatible with filter media of different thicknesses, and users can flexibly adjust the filter layer combination according to the type of pollution (such as thickening the HEPA layer during pollen season).

[0023] IV. Reduced long-term usage costs: The tiered maintenance mechanism allows low-cost filters (such as pre-filters) to be cleaned frequently, while high-priced filter media (such as antibacterial filter media) are only replaced when they fail, thus reducing overall maintenance costs. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the connection structure of the filter medium, inner frame, first filter screen and first pin.

[0027] Figure 3 This is a schematic diagram of the connection between the outer frame and the sponge.

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the outer frame.

[0029] The markings in the attached diagram are as follows: outer frame 1, connecting part 101, screw hole 102, slot 103, sponge 2, inner frame 3, first filter screen 301, first pin 302, second pin 303, second filter screen 304, first vent 305, second vent 306, filter medium 4. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] The following is for reference. Figure 1According to an embodiment of the present invention, an air purification device with an easy-to-clean filter includes an outer frame 1 and an inner frame 3 inside the outer frame 1. The inner frame 3 is detachable from the outer frame 1. The front and rear surfaces of the inner frame 3 are respectively provided with a first vent 305 and a second vent 306. A first filter 301 and a second filter 304 are respectively installed inside the inner frame 3. A filter medium 4 is installed between the first filter 301 and the second filter 304. The surface of the inner frame is provided with at least two insertion ports, and the filter medium is separated out from one of the two insertion ports.

[0032] Based on the structure that the inner frame 3 can be separated from the outer frame 1, and the at least two inlets provided on the surface of the inner frame, the user can choose to remove the filter media separately from a specific inlet, which is convenient for rinsing the first filter screen 301 or / and the second filter screen 304, and the filter media can be cleaned or replaced independently, extending the cleaning efficiency by more than 60% and realizing independent maintenance of the filter screen layers.

[0033] The outer surface of the outer frame 1 of this structure is provided with a connecting part 101, and the connecting part 101 is also provided with a screw hole 102. The connecting part 101 and the screw hole 102 of the outer frame 1 support multiple installation methods in the air purifier; the modular inner frame is compatible with filter media of different thicknesses, and users can flexibly adjust the filter layer combination according to the type of pollution (such as thickening the HEPA layer during pollen season). In addition, the layered maintenance mechanism allows low-cost filters (such as pre-filters) to be cleaned frequently, while high-priced filter media (such as antibacterial filter media) are only replaced when they fail, reducing the overall maintenance cost. In addition, the first filter 301 and the second filter 304 can be fixed to the inner wall of the inner frame 3 with hot melt adhesive, which is convenient for future replacement.

[0034] The outer surface of the outer frame 1 of this structure is also provided with at least two sponges 2, which are symmetrically distributed. When compressed, the symmetrically distributed sponges 2 fill the gap between the outer frame and the mounting frame of the air purifier, reducing the pollutant bypass rate by up to 35% in actual measurements. The inner surface of the outer frame 1 of this structure is provided with a slot 103, and the edge of the inner frame 3 is placed within the slot 103 to ensure zero offset when the inner frame is reset.

[0035] The inner frame 3 of this structure has a first pin 302 and a second pin 303 on one side surface, and the length of the first pin 302 is greater than the length of the second pin 303. For example, the length of the first pin 302 is L1=15mm, and the length of the second pin 303 is L2=10mm (L1 > L2).

[0036] Alternatively, the length of the first pin 302 may be less than the length of the second pin 303. For example, the length of the first pin 302 is L1 = 10 mm, and the length of the second pin 303 is L2 = 15 mm (L1 < L2).

[0037] The difference between the first pin 302 and the second pin 303 is at least 5mm. More specifically: when the inner frame 3 is installed inside the outer frame 1, the first pin 302 and the second pin 303 are respectively inserted into the pre-set positioning holes of the air purifier body; the inner wall of the air purifier body has a first positioning hole with a depth of 15mm and a second positioning hole with a depth of 10mm; when correctly installed, the 15mm long first pin 302 is inserted into the 15mm deep positioning hole, and the first pin 302 is completely embedded in the first positioning hole; in addition, the second pin 303 is completely embedded in the second positioning hole, and the edge of the inner frame 3 is tightly embedded in the slot 103 of the outer frame 1, ensuring airtightness. This ensures mechanical interference during reverse installation and avoids airflow leakage caused by reverse installation.

[0038] When installed in reverse, the first pin 302 is inserted into an inappropriate position, and the outer surfaces of the outer frame 1 and the inner frame 3 cannot fit tightly with the internal installation space of the air purifier, resulting in a large gap or even making installation impossible.

[0039] In this structure, the pore size of the first filter screen 301 is smaller than that of the second filter screen 304, which effectively improves the filtration effect for different filtering objects.

[0040] like Figures 1 to 4 As shown, the positioning connection between the outer frame 1 and the inner frame 3 is as follows: a slot 103 with a depth of 3 to 5 mm is opened on the inner surface of the outer frame 1 (see...). Figure 4 The three edges of the inner frame 3 are matched with the slot 103, allowing the three edges of the inner frame 3 to be placed inside the slot 103, thus enabling quick installation or removal.

[0041] Cleaning procedure: Step 1: Pull the inner frame 3 out of the outer frame 1 as a whole; Step 2: Pull the filter medium 4 outward to separate it from the side or top inlet. The first filter screen 301 and the second filter screen 304 are still in the inner frame 3; Rinse the first filter screen 301 and the second filter screen 304 respectively, and reinstall them in their original positions after cleaning.

[0042] Multi-functional mounting interface (see) Figure 4 As shown): The connecting part 101 is an L-shaped steel plate integrally formed with the outer frame 1, and an M6 standard screw hole 102 is opened at the bend; Installation mode: the screw passes through the screw hole 102 and is fixed to the inner wall of the air purifier; the connecting part 101 is pressed against the inner wall of the installation cavity of the air purifier, and the first pin 302 and the second pin 303 are respectively inserted into the first positioning hole and the second positioning hole in the air purifier to fix the whole.

[0043] Two sponges 2 are polyurethane sponges with a density of 40kg / m³, symmetrically bonded to the left and right side walls of the outer frame 1;

[0044] During installation, the sponge 2 is squeezed to produce a 30%-50% deformation. After deformation, the sponge 2 completely fills the gap between the outer frame 1 and the inner wall of the installation space, improving airtightness.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air cleaning device facilitating cleaning of the filter screen, comprising an outer frame (1), characterized in that, An inner frame (3) is provided inside the outer frame (1). The inner frame (3) can be separated from the outer frame (1). The front and rear surfaces of the inner frame (3) are respectively provided with a first vent (305) and a second vent (306). A first filter screen (301) and a second filter screen (304) are respectively installed inside the inner frame (3). A filter medium (4) is installed between the first filter screen (301) and the second filter screen (304). The surface of the inner frame (3) is provided with at least two inlets. The filter medium (4) is separated out from one of the two inlets.

2. The air cleaning device of claim 1, wherein: The outer surface of the outer frame (1) is provided with a connecting part (101).

3. The air cleaning device of claim 2, wherein: The connecting part (101) is also provided with a screw hole (102).

4. The air cleaning device of claim 1, wherein: The outer surface of the outer frame (1) is also provided with at least two sponges (2).

5. An air purification device for easy filter cleaning according to claim 4, characterized in that: The sponges (2) are arranged symmetrically.

6. The air cleaning device of claim 1, wherein: The inner surface of the outer frame (1) is provided with a slot (103), and the edge of the inner frame (3) is placed in the slot (103).

7. The air cleaning device of claim 1 or 6, wherein: The inner frame (3) has a first pin (302) and a second pin (303) on one side surface.

8. The air cleaning device of claim 7, wherein: The length of the first pin (302) is greater than the length of the second pin (303).

9. The air cleaning device of claim 7, wherein: The length of the first pin (302) is less than the length of the second pin (303).

10. The air cleaning device of claim 1, wherein: The pore size of the first filter screen (301) is smaller than that of the second filter screen (304).

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