CN221673742U - A foldable air filter - Google Patents

Abstract

The utility model provides a folding air filter, which relates to the technical field of filtering equipment and aims to solve the problem that when the area of a filter screen on most air filters is relatively fixed and large-flow air flows, the filter efficiency of the filter screen is low; the fixed frame comprises a positioning chute arranged at the position of the included angle of the edges around and a guiding chute arranged at the upper side and the lower side, and a wind resistance plate is arranged in the inner space of the fixed frame; the wind resistance plate is of a waist-shaped arc structure, the inner side of the wind resistance plate receives air flow from the front end of the fixed frame, and a connecting rod is arranged on the outer side of the wind resistance plate; two inclined airflow guide covers are respectively arranged on two sides of the top of the inner side of the fixed frame. The front movable plate and the rear movable plate move in the front-back position to drive the folding filter assembly to stretch, so that the efficiency of filtering high-flow air is improved, and the impact of the atmospheric air flow on the filter assembly is reduced.

Description

A foldable air filter

Technical Field

The utility model belongs to the technical field of filtering equipment, and more specifically, particularly relates to a folded air filter.

Background Art

An air filter is a device that captures dust from gas-solid two-phase flow through porous filter materials and purifies the gas. By using air filters, the air with low dust content is purified and sent into the room to ensure the process requirements of the clean room and the air cleanliness in the general air-conditioned room.

The air filter filters the air entering the room. Usually, the fan on the air filter is used to draw the air into the air filter. The filter area on most air filters is relatively fixed, so the flow rate of the air flow filtration is also relatively fixed. When a large amount of air flows, the filtration efficiency of the filter with a fixed area will definitely decrease, and the large amount of air can easily cause impact damage to the filter.

Utility Model Content

In order to solve the above technical problems, the utility model provides a foldable air filter to solve the problem that the air filter is used to filter the air entering the room. Usually, a fan on the air filter is used to draw the airflow into the air filter. The filter area on most air filters is relatively fixed, so the flow rate of the airflow filtration is relatively fixed. When a large flow of air flows, the filtering efficiency of the filter with a fixed area is low.

The purpose and function of this practical foldable air filter are achieved by the following specific technical means:

A foldable air filter, comprising a fixed frame, the fixed frame being a rectangular frame structure; the fixed frame comprising positioning slide grooves provided at four edge angles and guide slide grooves provided at upper and lower sides, and a wind resistance plate is installed in the internal space of the fixed frame; the wind resistance plate is a waist-shaped arc structure, the inner side of the wind resistance plate receives the airflow from the front end of the fixed frame, and a connecting rod is installed on the outer side of the wind resistance plate; two inclined airflow guide covers are respectively installed on both sides of the top of the inner side of the fixed frame;

The openings at both ends of the positioning slide groove become narrower, and the guide slide groove has an overall rectangular structure.

Furthermore, positioning storage tanks are respectively provided on the left and right sides of the fixed frame, and a front movable plate is installed at the front end of the fixed frame; an air inlet is installed at the front end of the front movable plate, wherein a driving motor is installed on the inner side of the air inlet, and a guide fan blade is installed on the output end of the driving motor, and a front outer sealing plate and a front inner sealing plate are sequentially provided at the upper and lower ends of the inner side of the front movable plate from the outside to the inside; wherein the front outer sealing plate is slidably installed on the upper and lower sides of the front end of the fixed frame, and the front inner sealing plate is slidably installed on the inner front end of the guide groove.

Furthermore, a rear movable plate is installed at the rear end position of the fixed frame; the rear movable plate is a rectangular plate structure, and the upper and lower ends of the inner side of the rear movable plate are provided with a rear inner sealing plate and a rear outer sealing plate in sequence from the outside to the inside; wherein the rear inner sealing plate is slidably installed on the upper and lower sides of the rear end of the fixed frame, and the rear outer sealing plate is slidably installed on the inner rear end of the guide groove.

Furthermore, positioning sliders are respectively installed at the positions of the inner edge angles of the front movable plate and the rear movable plate; a limit block is provided at the inner end of the positioning slider, and the positioning slider is slidably installed in the positioning slide grooves at the four edge angles of the fixed frame. The four positioning sliders form a group, and the inner ends of the two positioning sliders at relative positions are connected by springs.

Furthermore, folded filter components are installed on the left and right sides of the inner sides of the front movable plate and the rear movable plate; the upper and lower ends of the filter component are slidably installed inside the positioning storage tank, and the filter component includes reinforcing ribs, which are arranged at the position of the folding angle of the filter component.

Furthermore, the connecting rod is a cylindrical structure, and one end of the connecting rod is installed on the inner side of the rear movable plate; the left and right sides of the fixed frame are rotatably installed with driving wheels; the left and right sides of the inner side of the rear movable plate are installed with an upper driving plate, and the left and right sides of the inner side of the front movable plate are installed with a lower driving plate; wherein the bottom of the upper driving plate is meshingly connected to the driving wheel, and the top of the lower driving plate is meshingly connected to the driving wheel.

Furthermore, the bottom of the airflow guide cover is a conical structure, and a guide pipe is installed at one end of the airflow guide cover; the outer side of the guide pipe is installed on the inner top of the fixed frame through a structural member, and an airflow collecting hood is installed at one end of the guide pipe; the opening position of the airflow collecting hood is an oval structure, and the airflow collecting hood is located above the inner side of the air inlet at the front end of the front movable panel.

Compared with the prior art, the utility model has the following beneficial effects:

1. By using the front movable plate and the rear movable plate to move forward and backward, the folded filter assembly is stretched to increase the efficiency of large-flow air filtration. When a large-flow of air enters the fixed frame, the wind resistance plate is pushed to move. The wind resistance plate drives the rear movable plate to move backward through the connecting rod, and the front movable plate moves forward with the cooperation of the driving wheel. The internal space of the fixed frame is increased, and the filter assembly is stretched to increase the efficiency of large-flow air filtration. The dust in the air is eliminated in time, and the ribs are strengthened to increase the firmness of the filter assembly. The large-area filter assembly allows the air to flow out quickly, reducing the impact of the large airflow on the filter assembly, preventing the filter assembly from being damaged by impact, allowing clean air to enter the room, and improving the efficiency of indoor air filtration;

2. Increase the air pressure of the airflow through the airflow deflector to clean the inside of the filter assembly. When the air flows through the air inlet at the front end of the front movable plate, part of the air is collected by the airflow collection hood and guided to the inside of the airflow deflector through the guide pipe. The large-diameter opening of the airflow collection hood not only collects the airflow, but also increases the air pressure of the airflow, so that the airflow is ejected in a flat shape through the bottom of the airflow deflector, so that the airflow gathers on the inside of the filter assembly. The debris is blown away and gathered at the bottom of the inside of the filter assembly, thereby ensuring the life of the filter assembly to filter the air and reducing the cost of replacing the filter assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of the utility model.

FIG. 2 is a schematic structural diagram of the filter assembly of the present invention in an expanded state.

FIG3 is a schematic diagram of a cross-sectional structure of a fixed frame of the present invention.

FIG. 4 is a schematic diagram of the three-dimensional structure of the wind resistance plate of the present invention.

FIG. 5 is a schematic diagram of the three-dimensional structure of the airflow guide cover of the present utility model.

In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

1. Fixed frame; 101. Positioning slide; 102. Guide slide; 103. Positioning storage tank; 104. Front movable plate; 105. Front outer sealing plate; 106. Front inner sealing plate; 107. Rear movable plate; 108. Rear inner sealing plate; 109. Rear outer sealing plate; 1010. Positioning slider; 1011. Filter assembly; 1012. Reinforcing rib; 2. Wind resistance plate; 201. Connecting rod; 202. Driving wheel; 203. Upper driving plate; 204. Lower driving plate; 3. Airflow deflector; 301. Air guide pipe; 302. Airflow collecting hood.

DETAILED DESCRIPTION

The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

Embodiment 1:

As shown in Figures 1 to 5:

The utility model provides a folding air filter, comprising a fixed frame 1, which is a rectangular frame structure; the fixed frame 1 comprises positioning slide grooves 101 arranged at four edge angle positions and guide slide grooves 102 arranged at upper and lower sides, and a wind resistance plate 2 is installed in the internal space of the fixed frame 1; the wind resistance plate 2 is a waist-shaped arc structure, the inner side of the wind resistance plate 2 receives the airflow from the front end of the fixed frame 1, and a connecting rod 201 is installed on the outer side of the wind resistance plate 2; two inclined airflow guide covers 3 are respectively installed on both sides of the top of the inner side of the fixed frame 1; wherein, the openings at both ends of the positioning slide groove 101 are narrowed, and the guide slide groove 102 is an overall rectangular structure.

The left and right sides of the fixed frame 1 are respectively provided with positioning storage tanks 103, and a front movable plate 104 is installed at the front end of the fixed frame 1; an air inlet is installed at the front end of the front movable plate 104, wherein a driving motor is installed on the inner side of the air inlet, and a guide fan blade is installed on the output end of the driving motor, and a front outer sealing plate 105 and a front inner sealing plate 106 are sequentially arranged at the upper and lower ends of the inner side of the front movable plate 104 from the outside to the inside; wherein the front outer sealing plate 105 is slidably installed on the upper and lower sides of the front end of the fixed frame 1, and the front inner sealing plate 106 is arranged on the upper and lower sides of the front end of the fixed frame 1. The plate 106 is slidably mounted on the inner front end of the guide slot 102; a rear movable plate 107 is mounted at the rear end of the fixed frame 1; the rear movable plate 107 is a rectangular plate structure, and the upper and lower ends of the inner side of the rear movable plate 107 are sequentially provided with a rear inner sealing plate 108 and a rear outer sealing plate 109 from the outside to the inside; wherein, the rear inner sealing plate 108 is slidably mounted on the upper and lower sides of the rear end of the fixed frame 1, and the rear outer sealing plate 109 is slidably mounted on the inner rear end of the guide slot 102; the inner edges of the front movable plate 104 and the rear movable plate 107 are clamped Positioning slide blocks 1010 are installed at the positions of the four corners respectively; the inner ends of the positioning slide blocks 1010 are provided with limit blocks, and the positioning slide blocks 1010 are slidably installed in the positioning slide grooves 101 at the four edge angle positions of the fixed frame 1, and the four positioning slide blocks 1010 form a group, and the inner ends of the two positioning slide blocks 1010 at the relative positions are connected by springs; folded filter components 1011 are installed on the left and right sides of the inner sides of the front movable plate 104 and the rear movable plate 107; the upper and lower ends of the filter component 1011 are slidably installed in the positioning storage tank 103 Inside, the filter assembly 1011 includes a reinforcing rib 1012, which is arranged at the position of the folding angle of the filter assembly 1011; wherein the connecting rod 201 is a cylindrical structure, and one end of the connecting rod 201 is installed on the inner side of the rear movable plate 107; the driving wheels 202 are rotatably installed on the left and right sides of the fixed frame 1; the upper driving plate 203 is installed on the left and right sides of the inner side of the rear movable plate 107, and the lower driving plate 204 is installed on the left and right sides of the inner side of the front movable plate 104; wherein the bottom of the upper driving plate 203 is connected to the driving wheel 202; The wheel 202 is meshed and connected, and the top of the lower driving plate 204 is meshed and connected with the driving wheel 202. When the air filter is in use, under the action of the springs at the inner ends of the two positioning sliders 1010, the front movable plate 104 and the rear movable plate 107 are closed at the front and rear ends of the fixed frame 1, and the driving motor at the air inlet on the front movable plate 104 at the front end of the fixed frame 1 works, and the driving motor drives the guide fan blades to rotate so that the airflow of normal flow enters the interior of the fixed frame 1, and the air passes through the filter components 101 on both sides. 1 flows out to filter the air. When the driving motor rotates quickly to make a large amount of air flow enter the interior of the fixed frame 1, the large amount of air flow pushes the wind resistance plate 2 to move, so that the inner side of the arc-shaped wind resistance plate 2 receives the air flow. The larger the air flow, the larger the amplitude of the movement of the rear movable plate 107 pushed by the outer side of the wind resistance plate 2 through the connecting rod 201. Then, the left and right sides of the inner side of the rear movable plate 107 drive the driving wheel 202 to rotate through the upper driving plate 203, so that the driving wheel 202 drives the lower driving plate 204 to move, so that the two lower driving plates 204 drives the front movable plate 104 to move forward, then the rear movable plate 107 drives the rear inner sealing plate 108 to move on the upper and lower sides of the fixed frame 1, and the rear outer sealing plate 109 moves along the rear end of the inner side of the guide slot 102. At the same time, the front movable plate 104 drives the front outer sealing plate 105 to move on the upper and lower sides of the front end of the fixed frame 1, and the front inner sealing plate 106 moves at the front end of the inner side of the guide slot 102. The positioning slider 1010 moves on the inner side of the positioning slot 101, and the four positioning sliders 1010 respectively move the front movable plate 104 The position of the front movable plate 104 and the rear movable plate 107 is limited to increase the internal space of the fixed frame 1. At the same time, the front movable plate 104 and the rear movable plate 107 drive the filter component 1011 to move along the positioning storage tank 103, so that the folded filter component 1011 is unfolded, the air filtration area is increased, and the efficiency of large-flow air filtration is improved. The reinforcing rib 1012 is installed at the folded position of the filter component 1011 to increase the firmness of the filter component 1011 and reduce the impact damage to the filter component 1011 caused by large-flow air.

The bottom of the airflow guide cover 3 is a conical structure, and a guide pipe 301 is installed at one end of the airflow guide cover 3; the outer side of the guide pipe 301 is installed on the inner top of the fixed frame 1 through a structural member, and an airflow collection cover 302 is installed at one end of the guide pipe 301; the opening position of the airflow collection cover 302 is a waist-shaped structure, and the airflow collection cover 302 is located above the inner side of the air inlet at the front end of the front movable plate 104. When the air filter is in use, the airflow enters the air inlet at the front end of the front movable plate 104, and the airflow collection cover 302 Part of the inflowing air flow is collected, and the large diameter opening of the air flow collecting cover 302 allows the collected air flow to enter the interior of the air flow guide cover 3 through the guide tube 301. The air flow in the air flow guide cover 3 is ejected through the bottom outlet, and the air flow is flat, so that the air flow blows and cleans the impurities gathered on the inside of the filter component 1011, and the debris is gathered at the inner bottom of the fixed frame 1, thereby reducing the debris on the filter component 1011, ensuring the efficiency of the filter component 1011 in filtering air, and improving the service life of the filter component 1011.

Embodiment 2:

Compared with Embodiment 1, the installation of the wind resistance plate 2 inside the fixed frame 1 can also be eliminated, and the driving wheel 202 can be directly driven to rotate by installing a servo motor, so that the driving wheel 202 drives the upper driving plate 203 and the lower driving plate 204 to move, so that the movement state of the front movable plate 104 and the rear movable plate 107 is relatively stable, and the filter component 1011 is in a stable state to filter the air.

Embodiment 3:

A boost module is installed outside the air guide pipe 301 to further pressurize the airflow flowing in the air guide pipe 301, so that the high-pressure airflow is ejected through the airflow guide cover 3, thereby increasing the area of airflow cleaning and achieving a significant cleaning effect.

The specific usage and function of this embodiment are as follows: when in use, the driving motor at the air inlet at the front end of the front movable plate 104 drives the guide fan blades to rotate so that the airflow enters the fixed frame 1, and the air flows out after being filtered by the filter components 1011 on both sides. When the driving motor rotates quickly, a large amount of airflow enters the fixed frame 1, and the large amount of airflow pushes the wind resistance plate 2 to push the rear movable plate 107 to move backward through the connecting rod 201. The upper driving plate 203 on the inner side of the rear movable plate 107 drives the driving wheel 202 to drive the lower driving plate 204 to move. The lower driving plates 204 at the two places are driven The front movable plate 104 is moved forward to increase the internal space of the fixed frame 1. At the same time, the front movable plate 104 and the rear movable plate 107 drive the folded filter assembly 1011 to unfold along the positioning storage tank 103. The airflow collecting hood 302 collects part of the airflow flowing into the air inlet at the front end of the front movable plate 104. The large-diameter opening of the airflow collecting hood 302 allows the collected airflow to enter the airflow guide hood 3 through the guide pipe 301. The airflow is ejected in a flat shape through the outlet at the bottom of the airflow guide hood 3. The airflow blows and cleans the impurities gathered on the inside of the filter assembly 1011.

Claims (7)

1. A foldable air filter, comprising a fixed frame (1), wherein the fixed frame (1) is a rectangular frame structure; characterized in that the fixed frame (1) comprises positioning slots (101) provided at four edge angles and guide slots (102) provided at upper and lower sides of the fixed frame (1), and a wind resistance plate (2) is installed in the internal space of the fixed frame (1); the inner side of the wind resistance plate (2) receives the airflow from the front end of the fixed frame (1), and a connecting rod (201) is installed on the outer side of the wind resistance plate (2); two inclined airflow guide covers (3) are respectively installed on both sides of the top of the inner side of the fixed frame (1); wherein the openings at both ends of the positioning slot (101) become narrower. 2. A foldable air filter as described in claim 1, characterized in that: the left and right sides of the fixed frame (1) are respectively provided with positioning storage grooves (103), and a front movable plate (104) is installed at the front end of the fixed frame (1); the front end of the front movable plate (104) is an air inlet, and the upper and lower ends of the inner side of the front movable plate (104) are sequentially provided with a front outer sealing plate (105) and a front inner sealing plate (106) from the outside to the inside; the front outer sealing plate (105) is slidably installed on the upper and lower sides of the front end of the fixed frame (1), and the front inner sealing plate (106) is slidably installed on the inner front end of the guide groove (102). 3. A foldable air filter as described in claim 2, characterized in that: a rear movable plate (107) is installed at the rear end position of the fixed frame (1); the upper and lower ends of the inner side of the rear movable plate (107) are provided with a rear inner sealing plate (108) and a rear outer sealing plate (109) in sequence from the outside to the inside; wherein the rear inner sealing plate (108) is slidably installed on the upper and lower sides of the rear end of the fixed frame (1), and the rear outer sealing plate (109) is slidably installed on the inner rear end of the guide groove (102). 4. A foldable air filter as described in claim 3, characterized in that: positioning sliders (1010) are respectively installed at the positions of the inner edge angles of the front movable plate (104) and the rear movable plate (107); the inner ends of the positioning sliders (1010) are provided with limit blocks, and the positioning sliders (1010) are slidably installed in the positioning grooves (101) at the four edge angles of the fixed frame (1), the four positioning sliders (1010) form a group, and the inner ends of the two positioning sliders (1010) at relative positions are connected by springs. 5. A foldable air filter as described in claim 4, characterized in that: folded filter components (1011) are installed on the left and right sides of the inner side of the front movable plate (104) and the rear movable plate (107); the upper and lower ends of the filter component (1011) are slidably installed inside the positioning storage tank (103), and the filter component (1011) includes a reinforcing rib (1012), and the reinforcing rib (1012) is arranged at the position of the folding angle of the filter component (1011). 6. A foldable air filter as described in claim 5, characterized in that: one end of the connecting rod (201) is installed on the inner side of the rear movable plate (107); the driving wheels (202) are rotatably installed on the left and right sides of the fixed frame (1); the upper driving plate (203) is installed on the left and right sides of the inner side of the rear movable plate (107), and the lower driving plate (204) is installed on the left and right sides of the inner side of the front movable plate (104); wherein, the bottom of the upper driving plate (203) is meshingly connected with the driving wheel (202), and the top of the lower driving plate (204) is meshingly connected with the driving wheel (202). 7. A foldable air filter as described in claim 6, characterized in that: a guide pipe (301) is installed at one end of the airflow guide cover (3); the outer side of the guide pipe (301) is installed on the inner top of the fixed frame (1) through a structural member, and an airflow collection cover (302) is installed at one end of the guide pipe (301); the airflow collection cover (302) is located above the inner side of the front air inlet of the front movable plate (104).