Air filter and air conditioning unit

Abstract

The air filter and air conditioning unit provided by the application comprise a filter screen frame, a primary filter screen and M secondary filter screens, M openable and closable louver sub-frames are arranged on the air inlet side of the filter screen frame along the height direction of the filter screen frame, the primary filter screen is arranged on the filter screen frame and is close to the air outlet side of the openable and closable louver sub-frames, and the M secondary filter screens are arranged on the M openable and closable louver sub-frames respectively. In the case that the air filtering demand is low, the M openable and closable louver sub-frames are in the open state, and the primary filter screen is used for filtering and treating air. In the case that the air filtering demand is high, the M openable and closable louver sub-frames are in the closed state, the M secondary filter screens and the primary filter screen are used for filtering and treating air together, the air filtering efficiency is improved, and the overall machine efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to air filters and air conditioning units. Background Technology

[0002] Air filters separate and remove solid particulate matter from the air through physical processes such as mechanical blocking and electrostatic adsorption. They are currently widely used in dedicated computer rooms, large, medium, and small data centers, medical laboratories, and other fields. Existing air filters are generally divided into two types based on the air conditioning unit: full return air type and fresh-return air hybrid type. For full return air conditioning units, the return air comes entirely from inside the computer room, resulting in a high level of cleanliness, and a single-layer filter is used. For fresh-return air hybrid air conditioning units, since the fresh air comes directly from the external environment, a double-layer filter is required.

[0003] For the more widely used dual-layer filters, the performance is affected by the axial machining clearance between the frames due to the existing split-layer structure. If the machining precision is insufficient, untreated air can bypass into the unit, reducing air filtration efficiency and room cleanliness. Furthermore, in low-load, all-return-air applications where the fresh air ratio is zero, the dual-layer filter becomes redundant, offering no significant improvement in air cleanliness while significantly increasing unit operating power, thus reducing overall energy efficiency. Utility Model Content

[0004] This utility model provides an air filter and an air conditioning unit to solve the problems of insufficient axial machining accuracy between the filter frames of the existing double-layer filter, which allows untreated air to bypass into the unit and affect the air filtration efficiency, and the redundant design of the double-layer filter in the full return air application scenario, which leads to a reduction in the overall energy efficiency of the unit.

[0005] In a first aspect, this application provides an air filter, comprising: a filter frame, a primary filter, and M secondary filters, wherein the M openable louvered frames are arranged along the height direction of the filter frame on the air inlet side of the filter frame, and the primary filter is disposed on the filter frame and close to the air outlet side of the openable louvered frames.

[0006] The M secondary filter screens are respectively disposed on the M openable louvered frame; M is a positive integer greater than or equal to 2;

[0007] When the M openable louvered frames are in the open state, the primary filter is used to filter the air; when the M openable louvered frames are in the closed state, the M secondary filters and the primary filter are used together to filter the air.

[0008] The air filter provided in this application embodiment has M openable louvered sub-frames arranged along the height of the filter frame on the air inlet side, and M secondary filters respectively arranged on the M openable louvered sub-frames. A primary filter is arranged on the air outlet side of the filter frame near the openable louvered sub-frames. Thus, when the air filtration demand is low, the M openable louvered sub-frames are in the open state, and the primary filter is used to filter the air; when the air filtration demand is high, the M openable louvered sub-frames are in the closed state, and the M secondary filters and the primary filter work together to filter the air, thereby improving the air filtration efficiency and thus improving the overall energy efficiency of the unit.

[0009] In one possible design, the primary filter screen is a plate filter screen;

[0010] The secondary filter screen is either a single-layer filter screen or a double-layer filter screen.

[0011] The above solution meets the filtration requirements of different operating conditions by setting the primary filter screen as a plate filter screen and the secondary filter screen as a single-layer or double-layer filter screen.

[0012] In one possible design, the primary filter screen is detachably mounted on the filter screen frame; and / or

[0013] The secondary filter screen is detachably installed on the openable louvered frame.

[0014] The above solution allows for the detachable installation of the primary filter on the filter frame and / or the detachable installation of the secondary filter on the openable louver frame, thereby enabling the primary and / or secondary filters to be disassembled and replaced, improving filtration efficiency, and ultimately increasing the efficiency of the air conditioning unit.

[0015] In one possible design, a rubber strip is provided on the outer periphery of each of the said openable louvered frame.

[0016] The above solution improves the sealing between each openable louver frame by setting a rubber strip on the outer periphery of each openable louver frame. This prevents gaps between the closed openable louver frames when the air particle concentration is greater than or equal to a preset threshold. This prevents some air from bypassing the secondary filter and entering the unit, increasing the filtration burden on the primary filter and reducing the efficiency of the air conditioning unit.

[0017] One possible design also includes an openable louvered frame actuator;

[0018] The actuator of the openable louvered frame is used to control the openable louvered frame to be in an open or closed state according to the detected air particle concentration.

[0019] The above scheme includes an actuator for an openable louvered frame. This actuator detects the concentration of air particles and sets the openable louvered frame to be in an open or closed state based on the concentration. This filters the air. When the air filtration requirement is low, the air filter only filters the air through the primary filter. When the air filtration requirement is high, the air is filtered through M secondary filters and the primary filter. This integrated design of the openable louvered frame and the filter frame improves the efficiency of the air conditioning unit and avoids the redundancy caused by both secondary and primary filters filtering the air when the air filtration requirement is low.

[0020] In one possible design, the openable louvered frame actuator includes a particle concentration sensor and an openable louvered frame switch electrically connected to the particle concentration sensor.

[0021] The particle concentration sensor is used to detect the concentration of air particles;

[0022] The switch for the openable louvered frame is used to control the M openable louvered frames to be in an open state when the air particle concentration is less than a preset threshold, and to control the M openable louvered frames to be in a closed state when the air particle concentration is greater than or equal to the preset threshold.

[0023] The above solution incorporates a particle concentration sensor and an openable louver frame switch electrically connected to the particle concentration sensor within the openable louver frame actuator. Based on the comparison between the air particle concentration and a preset threshold, the openable louver frame is set to either open or closed to filter the air. This integrated design of the openable louver frame and the filter frame improves the efficiency of the air conditioning unit and avoids redundant design caused by both the secondary and primary filters filtering the air when air filtration requirements are low.

[0024] In one possible design, the openable louvered subframe actuator also includes a particle concentration display screen electrically connected to the particle concentration sensor;

[0025] The particle concentration display screen is used to display the numerical value of air particle concentration.

[0026] The above solution involves setting up a particle concentration display screen on the filter frame to show the numerical value of air particle concentration, allowing users to intuitively understand the value of air particle concentration and record changes in air particle concentration.

[0027] In one possible design, the filter element material of the primary filter screen is high-density synthetic fiber or ultra-fine glass fiber filter paper;

[0028] The filter element material of the secondary filter is polyester fiber or high-density synthetic fiber.

[0029] The above solution meets the filtration requirements of different operating conditions by setting the filter materials of the primary filter and the secondary filter.

[0030] In one possible design, the M openable louvered frame is integrally formed with the filter screen frame.

[0031] The above solution features M openable louvered frames integrated with the filter frame, thereby preventing untreated air from bypassing into the unit and reducing air filtration efficiency and room cleanliness.

[0032] Secondly, embodiments of this application provide an air conditioning unit, including air conditioning equipment and an air filter as described in any of the first aspects.

[0033] In this embodiment, M openable louvered sub-frames are arranged along the height of the filter frame on the air inlet side, and M secondary filters are respectively arranged on the M openable louvered sub-frames. A primary filter is arranged on the air outlet side of the filter frame near the openable louvered sub-frames. Thus, when the air filtration demand is low, the M openable louvered sub-frames are in the open state, and the primary filter is used to filter the air; when the air filtration demand is high, the M openable louvered sub-frames are in the closed state, and the M secondary filters and the primary filter work together to filter the air, thereby improving the air filtration efficiency and thus improving the overall energy efficiency of the machine. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an air filter provided in an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the structure of an openable and closable louvered frame provided in an embodiment of this application;

[0037] Figure 3 A schematic diagram of another openable louvered frame provided in an embodiment of this application;

[0038] Figure 4 A schematic diagram of the structure of an opening and closing louvered subframe actuator provided in an embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the structure of an air conditioning unit provided in an embodiment of this application.

[0040] Figure label:

[0041] 101-Filter screen frame; 102-Primary filter screen; 103-Secondary filter screen; 104-Openable louvered frame; 105-Rubber strip; 106-Openable louvered frame actuator. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] The application scenarios of the technical solutions in the embodiments of this application are described below.

[0044] The air filter provided in this application embodiment is applied to new return air mixing air conditioning units that require a double-layer filter structure in fields such as dedicated computer rooms, large, medium and small data centers, and medical laboratories.

[0045] In related technologies, air filters separate and remove solid particulate matter, such as dust, pollen, and PM2.5, from the air through physical processes such as mechanical blocking and electrostatic adsorption. Air filters serve two purposes: firstly, they prevent dust from entering air conditioning units and adhering to the surfaces of heat exchangers, fans, or sensors, thus affecting heat exchange efficiency; secondly, they purify the air, enhancing equipment stability and extending its service life. Existing air filters are generally classified into two types based on the type of air conditioning unit: full return air type and fresh-return air hybrid type. For full return air type units, the return air comes entirely from inside the machine room, requiring a high level of cleanliness, and employs a single-layer filter of coarse or medium-high efficiency. For fresh-return air hybrid type units, since the fresh air comes directly from the external environment, a dual-layer filter structure of coarse + medium-high efficiency is required.

[0046] For dual-layer filters, which are more widely used in existing technologies, their performance is directly affected by the axial machining clearance between the two filter frames due to their inherent split-layer structure. If the machining precision is insufficient, untreated air can bypass into the unit, significantly impacting air filtration efficiency and room cleanliness. Furthermore, when the air conditioning unit's load rate is low, the fresh air ratio is zero, rendering the dual-layer filter redundant. It provides no significant improvement in air cleanliness while significantly increasing the unit's operating power, leading to a reduction in overall energy efficiency.

[0047] In view of this, this application provides an air filter and an air conditioning unit, which, when the air filtration demand is low, allows the M openable louvered frames to be in the open state, filtering the air through a primary filter; and when the air filtration demand is high, allows the M openable louvered frames to be in the closed state, filtering the air through M secondary filters and a primary filter, thereby improving air filtration efficiency and thus improving the overall energy efficiency of the unit.

[0048] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0049] See Figure 1 As shown in the embodiment of this application, an air filter includes: a filter frame 101, a primary filter 102, and M secondary filters 103. The M openable louvered frames 104 are arranged along the height of the filter frame 101 on the air inlet side. The primary filter 102 is disposed on the filter frame 101 and close to the air outlet side of the openable louvered frames 104. The M secondary filters 103 are respectively disposed on the M openable louvered frames 104. M is a positive integer greater than or equal to 2. When the M openable louvered frames 104 are in the open state, the primary filter 102 is used to filter the air. When the M openable louvered frames 104 are in the closed state, the M secondary filters 103 and the primary filter 102 are used together to filter the air.

[0050] The air filter provided in this application embodiment has M openable louvered frames 104 arranged along the height direction of the filter frame 101 on the air inlet side of the filter frame, and M secondary filters 103 respectively arranged on the M openable louvered frames 104. A primary filter 102 is arranged on the air outlet side of the filter frame 101 near the openable louvered frames 104. Thus, when the air filtration demand is low, the M openable louvered frames 104 are in the open state, and the primary filter 102 is used to filter the air; when the air filtration demand is high, the M openable louvered frames 104 are in the closed state, and the M secondary filters 103 and the primary filter 102 are used together to filter the air, thereby improving the air filtration efficiency and thus improving the overall energy efficiency of the unit.

[0051] It should be noted that the M openable louvered frame 104 and the filter frame 101 are integrally formed, thereby preventing untreated air from bypassing into the unit and reducing air filtration efficiency and cleanliness of the machine room.

[0052] Specifically, the primary filter 102 is a plate filter; the secondary filter 103 is a single-layer or double-layer filter. For example... Figure 2 The diagram shown is a structural schematic of an openable louvered frame 104 provided in an embodiment of this application. When the secondary filter 103 is a single-layer filter, a filter is provided on one side of the openable louvered frame 104 (a), and no filter is provided on the other side of the openable louvered frame 104 (b). Figure 3 The diagram shows another structural schematic of the openable louvered frame 104 provided in the embodiment of this application. When the secondary filter 103 is a double-layer filter, the filter is provided on both sides of the openable louvered frame 104, that is, the filter is provided on one side of the louvered frame 104 in (a) and on the other side of the openable louvered frame 104 in (b).

[0053] In this embodiment, the secondary filter 103 is configured as a single-layer or double-layer filter depending on the filtration requirements. For example, when the air particle concentration is high, using a double-layer filter can more effectively separate and remove solid particles from the air. Therefore, this application can improve the filtration effect by appropriately increasing the number of layers in the secondary filter. When the air particle concentration is low, using a single-layer filter saves costs.

[0054] In one possible implementation, such as Figures 1-3 As shown, a rubber strip 105 is provided on the outer periphery of each openable louver frame 104.

[0055] In this embodiment, by providing rubber strips 105 on the outer periphery of each openable louver frame 104, the airtightness between the openable louver frames 104 is improved, avoiding the problem that when the air particle concentration is greater than or equal to a preset threshold, there are gaps between the closed openable louver frames 104, which would allow some air to bypass the secondary filter and enter the unit, increasing the filtration burden on the primary filter and reducing the efficiency of the air conditioning unit.

[0056] Because in related technologies, once the filter is selected, it can only be used for specific application scenarios and operating conditions based on the filter model, and cannot be matched to occasions with varying ambient air quality and operating conditions. In this application, by detachably installing the primary filter 102 onto the filter frame 101; and / or detachably installing the secondary filter 103 onto the openable louver frame 104, the primary and / or secondary filters can be disassembled and replaced according to different filtration needs, thereby improving filtration efficiency and thus improving the efficiency of the air conditioning unit.

[0057] In one possible implementation, such as Figure 1 As shown, it also includes an openable louvered frame actuator 106; the openable louvered frame actuator 106 is used to control the openable louvered frame 104 to be in an open or closed state according to the detected air particle concentration.

[0058] Specifically, such as Figure 4 The diagram shown is a structural schematic of an openable and closable louvered frame actuator 106 provided in an embodiment of this application. The openable and closable louvered frame actuator 106 includes a particle concentration sensor 401 and an openable and closable louvered frame switch 402 electrically connected to the particle concentration sensor 401.

[0059] In practical applications, the particle concentration sensor 401 is used to detect the concentration of air particles; the openable louver frame switch 402 is used to control M openable louver frames 104 to be in the open state when the air particle concentration is less than a preset threshold, and to control M openable louver frames 104 to be in the closed state when the air particle concentration is greater than or equal to the preset threshold. The preset threshold is a pre-set value.

[0060] For example, the preset threshold can be 1μm, 2μm, 3μm, 4μm, 5μm, etc. For instance, when the preset threshold is 1μm, if the particle concentration sensor 401 detects that the air particle concentration is less than the preset threshold of 1μm, the openable louver frame switch 402 controls M openable louver frames 104 to be in the open state, and the primary filter 102 is used to filter the air. If the particle concentration sensor 401 detects that the air particle concentration is greater than or equal to the preset threshold of 1μm, the openable louver frame switch 402 controls M openable louver frames 104 to be in the closed state, and M secondary filters 103 and the primary filter 102 work together to filter the air. Thus, the integrated design of the openable louver frame 104 and the filter frame 101 improves the efficiency of the air conditioning unit and avoids redundant design caused by both the secondary and primary filters filtering the air when air filtration demand is low.

[0061] In one possible implementation, such as Figure 4 As shown, the openable louvered frame actuator 106 also includes a particle concentration display screen 403 electrically connected to the particle concentration sensor 401; the particle concentration display screen 403 is used to display the numerical value of the air particle concentration.

[0062] In this embodiment of the application, a particle concentration display screen 403 is provided on the louvered frame actuator 106, so that the value of air particle concentration can be displayed in real time through the particle concentration display screen 403, so that the user can intuitively understand the value of air particle concentration and record the changes of air particle concentration within a preset time period.

[0063] In one possible implementation, the filter element material of the primary filter 102 is high-density synthetic fiber or ultra-fine glass fiber filter paper; the filter element material of the secondary filter 103 is polyester fiber or high-density synthetic fiber.

[0064] For example, air filters use different types of filter materials depending on the filtration requirements. When the filter material is polyester fiber, it can filter particles with a diameter of 5 μm or greater; when the filter material is high-density synthetic fiber, it can filter particles with a diameter of 1 μm to 5 μm; and when the filter material is ultra-fine glass fiber filter paper, it can filter particles with a diameter of 1 μm or less.

[0065] In specific embodiments, the filter element material of the primary filter 102 can be set to high-density synthetic fiber, and the filter element material of the secondary filter 103 can be set to polyester fiber; or the filter element material of the primary filter 102 can be set to high-density synthetic fiber, and the filter element material of the secondary filter 103 can be set to high-density synthetic fiber; or the filter element material of the primary filter 102 can be set to ultrafine glass fiber filter paper, and the filter element material of the secondary filter 103 can be set to polyester fiber; or the filter element material of the primary filter 102 can be set to ultrafine glass fiber filter paper, and the filter element material of the secondary filter 103 can be set to high-density synthetic fiber.

[0066] Furthermore, a preset threshold can be set according to filtration requirements, and / or the secondary filter 103 can be set as a single-layer filter or a double-layer filter. Based on the same utility model concept, such as Figure 5 As shown in the figure, this application embodiment provides an air conditioning unit. The principle of the air conditioning unit is similar to that of the air filter, and the repeated parts will not be described again. The air conditioning unit includes an air conditioning device 501 and the aforementioned air filter 502.

[0067] In this embodiment, M openable louvered frames 104 are arranged along the height of the filter frame 101 on the air inlet side of the filter frame, and M secondary filters 103 are respectively arranged on the M openable louvered frames 104. A primary filter 102 is arranged on the air outlet side of the filter frame 101 near the openable louvered frames 104. Thus, when the air filtration demand is low, the M openable louvered frames 104 are in the open state, and the primary filter 102 is used to filter the air. When the air filtration demand is high, the M openable louvered frames 104 are in the closed state, and the M secondary filters 103 and the primary filter 102 are used together to filter the air, thereby improving the air filtration efficiency and thus improving the overall energy efficiency of the machine.

[0068] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An air filter, characterized by, include: The filter includes a filter frame, a primary filter, and M secondary filters. The M openable louvered frames are arranged along the height of the filter frame on the air inlet side of the filter frame. The primary filter is arranged on the filter frame and close to the air outlet side of the openable louvered frames. The M secondary filter screens are respectively disposed on the M openable louvered frame; M is a positive integer greater than or equal to 2; When the M openable louvered frames are in the open state, the primary filter is used to filter the air; when the M openable louvered frames are in the closed state, the M secondary filters and the primary filter are used together to filter the air.

2. The air filter of claim 1, wherein, The primary filter screen is a plate filter screen; The secondary filter screen is either a single-layer filter screen or a double-layer filter screen.

3. The air filter of claim 2, wherein, The primary filter screen is detachably mounted on the filter screen frame; and / or The secondary filter screen is detachably installed on the openable louvered frame.

4. The air filter of claim 1, wherein A rubber strip is provided on the outer periphery of each of the openable louvered frame.

5. The air filter of claim 1, wherein It also includes an actuator for a louvered frame; The actuator of the openable louvered frame is used to control the openable louvered frame to be in an open or closed state according to the detected air particle concentration.

6. The air filter of claim 5, wherein, The openable louvered frame actuator includes a particle concentration sensor and an openable louvered frame switch electrically connected to the particle concentration sensor. The particle concentration sensor is used to detect the concentration of air particles; The switch for the openable louvered frame is used to control the M openable louvered frames to be in an open state when the air particle concentration is less than a preset threshold, and to control the M openable louvered frames to be in a closed state when the air particle concentration is greater than or equal to the preset threshold.

7. The air filter of claim 6, wherein The openable louvered frame actuator also includes a particle concentration display screen electrically connected to the particle concentration sensor; The particle concentration display screen is used to display the numerical value of air particle concentration.

8. The air filter according to any one of claims 1 to 7, wherein The filter element material of the primary filter screen is high-density synthetic fiber or ultra-fine glass fiber filter paper; The filter element material of the secondary filter is polyester fiber or high-density synthetic fiber.

9. The air filter of claim 8, wherein, The M openable louvered frame and the filter screen frame are integrally formed.

10. An air conditioning unit characterized by, Includes air conditioning equipment and air filters as described in any one of claims 1 to 9.

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