Multi-mode switching fresh air filtering and purifying device

Abstract

The utility model provides a multi-mode switching fresh air filtering and purifying device, which relates to the technical field of fresh air filtering and purifying and comprises a filtering box, the filtering box comprises a box body, and an upper filtering piece and a lower filtering piece are respectively arranged on the top surface and the bottom surface of the box body. The upper filtering piece and the lower filtering piece filter air flowing through the upper filtering piece and the lower filtering piece and intercept impurities, and the upper filtering piece and the lower filtering piece are fixed to the box body through screws or in a clamping connection mode. When the multi-mode switching fresh air filtering and purifying device needs to be switched to an air supply mode, a rotating shaft is reversely rotated, an L-shaped plate is driven by the rotating shaft to reversely rotate, a first sealing block can leave the box body and abut against a fixing plate, a second baffle can leave the first baffle, and a second sealing block can abut against the inner wall of the box body; and at the moment, outside air is sucked into the box body by the fan through the air inlet, and the device can realize an air supply or exhaust mode by only one group of fan, so that the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to a fresh air filtration and purification device, specifically a multi-mode switching fresh air filtration and purification device, belonging to the field of fresh air filtration and purification technology. Background Technology

[0002] A fresh air system consists of a blower unit and a filtration and purification device. The blower unit introduces outdoor air into the room, while the filtration and purification device purifies the incoming air, effectively removing particulate matter, harmful gases, and odors. Both work together to ensure a stable and continuous supply of clean air. As a crucial component, the filtration and purification device not only improves air quality but also protects the operational stability of the blower unit; its performance directly affects the purification efficiency and lifespan of the entire fresh air system.

[0003] Indoor air often becomes polluted due to human activity and household pollution. If not removed promptly, it can easily cause discomfort or health problems. Furthermore, a lack of fresh air can lead to oxygen deficiency, affecting quality of life. Therefore, fresh air systems have both supply and exhaust modes. The supply mode introduces fresh outdoor air into the room to replenish oxygen, while the exhaust mode removes stale indoor air, reducing pollutant concentrations. These two modes work together to achieve continuous air renewal and improved air quality.

[0004] The aforementioned patented technical solution uses two sets of fans, namely supply fans and exhaust fans. Although it can achieve independent control and more precise air volume adjustment, it also has some obvious drawbacks, such as a more complex system structure and increased overall maintenance costs.

[0005] Furthermore, during extreme weather conditions, the outside air contains a large amount of dust, pollutants, water vapor, and other impurities, which can enter the room with the fresh air and pollute the indoor air. Therefore, a multi-mode switching fresh air filtration and purification device is proposed here. Utility Model Content

[0006] This invention proposes a multi-mode switching fresh air filtration and purification device that only requires one set of fans to achieve either air supply or exhaust modes, thereby reducing maintenance costs.

[0007] This utility model is achieved through the following technical solution: a multi-mode switching fresh air filtration and purification device, including a filter box, the filter box including a box body, an upper filter element and a lower filter element respectively installed on the top and bottom surfaces of the box body, the upper filter element and the lower filter element filter the air flowing through the upper filter element and the lower filter element, intercepting impurities, the upper filter element and the lower filter element are fixed to the box body by screws or snap-fit, so as to facilitate subsequent maintenance or replacement.

[0008] It also includes an air supply component, which is disposed inside the filter box. The air supply component includes an L-shaped plate, which is rotatably mounted on the filter box. A fan is mounted on the L-shaped plate. The air supply component also includes an air inlet opened on the filter box. The air supply component also includes an exhaust air supply mode adjustment component, which includes a rotating shaft connected to the L-shaped plate and rotatably connected to the box body.

[0009] The exhaust / supply mode adjustment component also includes a first sealing block, which is made of elastic material. When the first sealing block abuts against the fixed plate, there is a good seal between the fixed plate and the L-shaped plate. The first sealing block is fixed to the upper end of the L-shaped plate, and a second sealing block is fixed to the lower end of the L-shaped plate. The second sealing block is made of elastic material, and when the second sealing block abuts against the housing, there is a good seal between the housing and the L-shaped plate.

[0010] The exhaust and ventilation mode adjustment component also includes a fixing plate, which is fixed to the inner wall of the box. A first baffle is fixed on the fixing plate, and a second baffle is fixed on the L-shaped plate. The second baffle is made of elastic material, and when the second baffle abuts against the first baffle, there is good sealing between the first baffle and the second baffle.

[0011] It also includes a sealing component, which is disposed on the filter box. The sealing component includes a sliding plate, on which a locking rod is fixed. The locking rod and the sliding groove are interference-fitted, and the locking rod can move within the sliding groove. The sealing component also includes a sliding groove formed on the box body, on which the locking rod is slidably connected. The sealing component also includes a retaining sleeve, which is fixed on the box body.

[0012] It also includes a limiting component, which is installed on the filter box. The limiting component includes a fixed plate, which is fixed to the box body. The fixed plate has two limiting holes. The limiting component also includes a tension spring, which is fixed to the rotating shaft. A rotating block is fixed on the tension spring. A guide sleeve is fixed on the rotating block. The guide sleeve is slidably connected to the rotating shaft. The guide sleeve can slide on the rotating shaft but cannot rotate on the rotating shaft. Therefore, when the guide sleeve rotates, the rotating shaft will also rotate. A limiting block is fixed on the guide sleeve, and a limiting rod is fixed on the limiting block.

[0013] This utility model provides a multi-mode switching fresh air filtration and purification device, which has the following beneficial effects:

[0014] 1. When the multi-mode switching fresh air filtration and purification device needs to be switched to exhaust mode, the L-shaped plate is rotated by the rotating shaft. The L-shaped plate will drive the first sealing block away from the fixed plate and press the first sealing block against the inner wall of the box. At the same time, the second baffle will also press against the first baffle. At this time, the air in the box can be discharged from the air inlet by the fan, realizing the switching of exhaust mode.

[0015] 2. When the multi-mode switching fresh air filtration and purification device needs to be switched to the air supply mode, the rotating shaft is rotated in the opposite direction. The rotating shaft drives the L-shaped plate to rotate in the opposite direction. The first sealing block will leave the box and abut against the fixed plate. The second baffle will leave the first baffle. The second sealing block will abut against the inner wall of the box. At this time, the outside air will be drawn into the box through the air inlet by the fan. This device only needs one fan to realize the air supply or exhaust mode, reducing maintenance costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the air supply mode structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the exhaust mode structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting component structure of this utility model.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Filter box; 101. Box body; 102. Upper filter element; 103. Lower filter element;

[0022] 2. Air supply components; 201. L-shaped plate; 202. Fan; 203. Air inlet; 204. Rotating shaft; 205. First sealing block; 206. Second sealing block; 207. First baffle; 208. Second baffle; 209. Fixing plate;

[0023] 3. Enclosure components; 301. Slide plate; 302. Rubber pillar; 303. Slide groove; 304. Clamping sleeve;

[0024] 4. Limiting components; 401. Fixed plate; 402. Limiting hole; 403. Tension spring; 404. Rotating block; 405. Guide sleeve; 406. Limiting block; 407. Limiting rod. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0026] Please see Figures 1-4The present invention proposes the following implementation scheme: a multi-mode switching fresh air filtration and purification device, including a filter box 1, the filter box 1 including a box body 101, and an upper filter element 102 and a lower filter element 103 respectively installed on the top and bottom surfaces of the box body 101.

[0027] The upper filter element 102 and the lower filter element 103 filter the air flowing through them and intercept impurities. The upper filter element 102 and the lower filter element 103 are fixed to the housing 101 by screws or snap-fit ​​for subsequent maintenance or replacement.

[0028] Please refer to this carefully. Figure 2 and Figure 3 It also includes an air supply component 2, which is installed inside the filter box 1. The air supply component 2 includes an L-shaped plate 201, which is rotatably mounted on the filter box 1. A fan 202 is installed on the L-shaped plate 201.

[0029] The air supply component 2 also includes an air inlet 203 opened on the filter box 1. The air supply component 2 also includes an exhaust air supply mode adjustment component. The exhaust air supply mode adjustment component includes a rotating shaft 204, which is connected to an L-shaped plate 201 and is rotatably connected to the box body 101.

[0030] Please refer to this carefully. Figure 2 and Figure 3 The exhaust and ventilation mode adjustment component also includes a first sealing block 205. The first sealing block 205 is made of elastic material. When the first sealing block 205 abuts against the fixed plate 209, there is good sealing between the fixed plate 209 and the L-shaped plate 201.

[0031] The first sealing block 205 is fixed to the upper end of the L-shaped plate 201, and the lower end of the L-shaped plate 201 is fixed with a second sealing block 206. The second sealing block 206 is made of elastic material. When the second sealing block 206 abuts against the box 101, there is good sealing between the box 101 and the L-shaped plate 201.

[0032] The exhaust and ventilation mode adjustment component also includes a fixing plate 209, which is fixed to the inner wall of the housing 101. A first baffle 207 is fixed on the fixing plate 209, and a second baffle 208 is fixed on the L-shaped plate 201. The second baffle 208 is made of elastic material. When the second baffle 208 abuts against the first baffle 207, there is good sealing between the first baffle 207 and the second baffle 208.

[0033] Please refer to this carefully. Figure 1 and Figure 2 It also includes a sealing component 3, which is disposed on the filter box 1. The sealing component 3 includes a slide plate 301, on which a locking rod 302 is fixed. The locking rod 302 and the slide groove 303 are interference fit.

[0034] Furthermore, the lever 302 can move within the slide groove 303. The sealing component 3 also includes a slide groove 303 formed on the housing 101. The lever 302 is slidably connected to the slide groove 303. The sealing component 3 also includes a sleeve 304, which is fixed to the housing 101.

[0035] Please refer to this carefully. Figure 4 It also includes a limiting component 4, which is set on the filter box 1. The limiting component 4 includes a fixing plate 401, which is fixed on the box body 101. The fixing plate 401 has two limiting holes 402. The limiting component 4 also includes a tension spring 403, which is fixed on the rotating shaft 204. A rotating block 404 is fixed on the tension spring 403.

[0036] A guide sleeve 405 is fixed on the rotating block 404. The guide sleeve 405 is slidably connected to the rotating shaft 204. The guide sleeve 405 can slide on the rotating shaft 204 but cannot rotate on the rotating shaft 204. Therefore, when the guide sleeve 405 rotates, the rotating shaft 204 will also rotate. A limit block 406 is fixed on the guide sleeve 405, and a limit rod 407 is fixed on the limit block 406.

[0037] Working principle: When switching to exhaust mode, the limiting rod 407 is pulled outward by the rotating block 404, so that the limiting rod 407 moves out of the limiting hole 402. Then, the limiting rod 407 is rotated by the rotating block 404, so that the limiting rod 407 moves into another limiting hole 402. During the above process, the rotating shaft 204 will drive the L-shaped plate 201 to rotate. The L-shaped plate 201 will drive the first sealing block 205 away from the fixed plate 209 and press the first sealing block 205 against the inner wall of the box 101. At the same time, the second baffle 208 will also press against the first baffle 207. See the sealing component 3 in the figure. At this time, the air in the box 101 can be discharged from the air inlet 203 by the fan 202, realizing the switching of exhaust mode.

[0038] When switching to the air supply mode, the shaft 204 is rotated in the reverse direction. The shaft 204 drives the L-shaped plate 201 to rotate in the reverse direction. The first sealing block 205 will leave the housing 101 and abut against the fixing plate 209. The second baffle 208 will leave the first baffle 207. The second sealing block 206 will abut against the inner wall of the housing 101. See the air supply component 2 in the figure. At this time, the outside air will be drawn into the housing 101 through the air inlet 203 by the fan 202. This device only needs one set of fans 202 to realize the air supply or exhaust mode, reducing maintenance costs.

[0039] When it is necessary to switch to the shutdown mode, push the lever 302. The lever 302 can be inserted into the sleeve 304. At this time, the slide plate 301 will cover the air inlet 203. The air inlet 203 is no longer connected to the outside, thus preventing a large amount of dust and moisture from entering the housing 101 from the air inlet 203 under extreme weather conditions.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-mode switching fresh air filtration and purification device, comprising a filter box (1), characterized in that: It also includes an air supply component (2), which is disposed inside the filter box (1); The air supply component (2) includes an L-shaped plate (201), which is rotatably mounted on the filter box (1). A fan (202) is installed on the L-shaped plate (201). The air supply component (2) also includes an air inlet (203) opened on the filter box (1). The air supply component (2) also includes an exhaust air supply mode adjustment component. It also includes a sealing component (3), which is disposed on the filter box (1).

2. The multi-mode switching fresh air filtration and purification device according to claim 1, characterized in that: The filter box (1) includes a box body (101), and an upper filter element (102) and a lower filter element (103) are respectively installed on the top and bottom surfaces of the box body (101).

3. The multi-mode switching fresh air filtration and purification device according to claim 2, characterized in that: The exhaust and ventilation mode adjustment component includes a rotating shaft (204), which is connected to an L-shaped plate (201) and is rotatably connected to the housing (101).

4. The multi-mode switching fresh air filtration and purification device according to claim 3, characterized in that: The exhaust and air supply mode adjustment component also includes a first sealing block (205), which is fixed to the upper end of the L-shaped plate (201). A second sealing block (206) is fixed to the lower end of the L-shaped plate (201). The exhaust and air supply mode adjustment component also includes a fixing plate (209), which is fixed to the inner wall of the housing (101). A first baffle (207) is fixed on the fixing plate (209), and a second baffle (208) is fixed on the L-shaped plate (201).

5. The multi-mode switching fresh air filtration and purification device according to claim 1, characterized in that: The enclosing component (3) includes a sliding plate (301) on which a lever (302) is fixed. The enclosing component (3) also includes a groove (303) opened on the housing (101), and the lever (302) is slidably connected to the groove (303). The enclosing component (3) also includes a sleeve (304) fixed on the housing (101).

6. The multi-mode switching fresh air filtration and purification device according to claim 1, characterized in that: It also includes a limiting component (4), which is disposed on the filter box (1). The limiting component (4) includes a fixed plate (401), which is fixed on the box body (101). The fixed plate (401) has two limiting holes (402). The limiting component (4) also includes a tension spring (403), which is fixed on the rotating shaft (204). A rotating block (404) is fixed on the tension spring (403). A guide sleeve (405) is fixed on the rotating block (404). The guide sleeve (405) is slidably connected to the rotating shaft (204). A limiting block (406) is fixed on the guide sleeve (405). A limiting rod (407) is fixed on the limiting block (406).

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