Fresh air filter

Abstract

The utility model provides a fresh air filter which comprises a mounting section, a through hole is formed in the lower end face of the mounting section, a sliding groove is formed in the mounting section, a fixing frame is arranged in the sliding groove in a matched mode, a buckling groove is formed in the air outlet side of the fixing frame, and a filter screen and a buckling frame are arranged on one side of the buckling groove. The buckling frame is arranged in the buckling groove in a matched mode, the edge of the filter screen is pressed into the buckling groove, a plurality of blades are arranged on the other side of the fixing frame, a first protrusion and a second protrusion are arranged at the two ends of each blade, a first assembling hole is formed in the side wall of the fixing frame, the first protrusions are matched with the first assembling hole, and the second protrusions are matched with the second assembling hole. A C-shaped frame is movably arranged in the fixing frame, a second assembling frame is arranged on the C-shaped frame and matched with the second protrusion, and when the blade is horizontal, the first assembling hole and the second assembling hole are equal in height. According to the invention, the filter screen is convenient to replace, and dust is prevented from falling off in the replacement process.

Description

TECHNICAL FIELD

[0001] The present application relates to the filter technical field, especially to a fresh air filter. BACKGROUND

[0002] The fresh air system is a set of independent air handling system composed of the air supply system and the exhaust system, which is divided into the duct type fresh air system and the ductless fresh air system. The duct type fresh air system is composed of the fresh air machine and the duct accessories, and the outdoor air is purified by the fresh air machine and introduced into the indoor, and the indoor air is discharged through the duct. The ductless fresh air system is composed of the fresh air machine, and the outdoor air is also purified by the fresh air machine and introduced into the indoor.

[0003] The filter screen needs to be set before the fresh air enters the indoor to improve the air quality. The existing filter screen is mostly simple in structure, and is basically the filter screen and the support frame of the edge, and when the filter screen is replaced, the whole is taken down. Since the air pipe is mostly set in the ceiling, when the filter screen is replaced, dust is easily dropped on the replacement personnel due to vibration and other factors. SUMMARY

[0004] In order to solve the above problems, the present application discloses a fresh air filter, which comprises a mounting section, a through hole is formed in the lower end face of the mounting section, and a sliding groove is arranged in the interior of the mounting section, a fixed frame is arranged in the sliding groove in a matched mode, a buckle groove is arranged on one side of the fixed frame, a filter screen and a buckle frame are arranged on one side of the buckle groove, the buckle frame is matched in the buckle groove, and the edge of the filter screen is pressed into the buckle groove. That is, the filter screen is placed on the fixed frame, and then the buckle frame is used for fixation, and this mode has the advantages of simple and convenient installation and disassembly of the filter screen.

[0005] A plurality of blades are arranged on the other side of the fixed frame, first and second protrusions are arranged at both ends of the blade, a first assembly hole is arranged on the side wall of the fixed frame, the first protrusion is matched with the first assembly hole, a C-shaped frame is movably arranged in the interior of the fixed frame, a second assembly frame is arranged on the C-shaped frame, and the second assembly frame is matched with the second protrusion, and the first assembly hole and the second assembly hole are in the same height when the blade is horizontal. That is, the C-shaped frame is pulled up and down to change the inclination angle of the blade, and the ventilation volume can be controlled to a certain extent. In addition, when the filter screen is replaced, a large amount of dust is attached to the filter screen, and the dust falls off from the filter screen due to vibration and other factors during the process of taking down the fixed frame. Therefore, when the fixed frame is taken down, the blades are vertical, one side is blocked, and the dust is prevented from falling.

[0006] Preferably, the inner side of the buckle frame is fixedly connected with a tab. The tab is used for taking out the buckle frame.

[0007] Preferably, the middle part of the C-shaped frame is bent to form a handle. The handle pushes and pulls the C-shaped frame downward or upward.

[0008] Preferably, the lower part of the mounting section is provided with Y-shaped fastening members on both sides, one end of the fastening members holds the fixed frame, and the end is provided with a protrusion, which cooperates with the groove provided at the bottom of the fixed frame. The fixed frame is held and positioned by the fastening members.

[0009] Preferably, the end of the mounting section is fixedly connected with a fixing member, and the fixing member and one end of the fastening member are rotationally connected.

[0010] Preferably, both ends of the mounting section are provided with connecting sections. The connecting sections are used to connect the air duct.

[0011] The beneficial effects of the present application are as follows:

[0012] 1. A plurality of blades are provided. When the filter screen is replaced, the C-shaped frame is pulled to make the blades vertical, that is, the side of the filter screen with dust is blocked, thereby avoiding the scattering of dust.

[0013] 2. The structure of the fastening frame and the fastening groove is beneficial to the replacement of the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an explosion schematic view of the present application;

[0015] Figure 2 It is a perspective view of the air outlet side of the present application;

[0016] Figure 3 It is a perspective view of the air inlet side of the present application;

[0017] Figure 4 It is a front view of the air outlet side of the present application;

[0018] Figure 5 It is a perspective view of the fastening member of the present application;

[0019] Figure 6 It is Figure 1 the enlarged view of A in FIG. 4;

[0020] Figure 7 It is Figure 1 the enlarged view of B in FIG. 4;

[0021] LIST OF REFERENCE NUMBERS

[0022] 1. Connecting section; 2. Mounting section; 3. Fastening frame; 4. Filter screen; 5. Fixed frame; 6. Handle; 7. Blade; 8. Tab; 9. Fastening member; 10. Protrusion; 11. Fixing member; 12. Fastening groove; 13. First assembly hole; 14. First protrusion; 15. Second protrusion; 16. C-shaped frame. DETAILED DESCRIPTION

[0023] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] like Figures 1 to 7 As shown, a fresh air filter includes an installation section 2, which is a rectangular tube. The lower end face of the installation section 2 has a through hole, and the interior of the installation section 2 has a sliding groove. A fixing frame 5 is fitted in the sliding groove, that is, the fixing frame 5 is assembled into the interior of the installation section 2 through the through hole. At the same time, the sliding groove limits the fixing frame 5. A fastening groove 12 is provided on the air outlet side of the fixing frame 5. A filter screen 4 and a fastening frame 3 are provided on one side of the fastening groove 12. The fastening frame 3 fits in the fastening groove 12 and presses the edge of the filter screen 4 into the fastening groove 12. Through this fastening method, the filter screen 4 has the advantages of convenient installation and disassembly, that is, the filter screen 4 can be replaced quickly and flexibly.

[0025] On the other side of the fixed frame 5, several blades 7 are provided. The multiple blades 7 form a louver type. Both ends of the blades 7 are provided with a first protrusion 14 and a second protrusion 15 to realize the assembly of the blades 7. The side wall of the fixed frame 5 is provided with a first assembly hole 13, and the first protrusion 14 and the first assembly hole 13 cooperate. A C-shaped frame 16 is movably provided inside the fixed frame 5. A second assembly frame is provided on the C-shaped frame 16, and the second assembly frame and the second protrusion 15 cooperate. When the blades 7 are horizontal, the first assembly hole 13 and the second assembly hole are at the same height. That is, during the up and down movement of the C-shaped frame 16, the tilt angle of the blades 7 also changes.

[0026] A lever 8 is fixedly connected to the inner side of the fastening frame 3. The lever 8 facilitates the removal of the fastening frame 3.

[0027] The C-shaped frame 16 is bent in the middle to form a handle 6. The handle 6 is designed to facilitate pulling the C-shaped frame 16 up and down.

[0028] Y-shaped fasteners 9 are provided on both sides of the lower part of the mounting section 2. One end of the fastener 9 supports the fixing frame 5, and the end is provided with a protrusion 10. The protrusion 10 and the groove pre-set at the bottom of the fixing frame 5 cooperate. The fastener 9 supports the fixing frame 5. At the same time, the cooperation between the protrusion 10 and the groove ensures that the fastener 9 maintains its posture in a natural state.

[0029] The end of the mounting section 2 is fixedly connected to the fixing member 11, and the fixing member 11 is rotatably connected to one end of the fastener 9. The fixing member 11 supports and connects to the fastener 9.

[0030] The two ends of the mounting section 2 are provided with the connecting section 1, and the connecting section 1 is used for connecting the air pipe.

[0031] The technical means disclosed in the technical scheme of the present application is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features.

Claims

1. A fresh air filter, characterized by, Including installation section (2), the lower end surface of installation section (2) is provided with through hole, and the inside of installation section (2) is provided with sliding slot, the fixed frame (5) is matched and arranged in the sliding slot, the side of the fixed frame (5) of air outlet is provided with buckle groove (12), the side of buckle groove (12) is provided with filter screen (4) and buckling frame (3), buckling frame (3) is matched in buckle groove (12), and the edge of filter screen (4) is pressed into buckle groove (12); The other side of the fixed frame (5) is provided with a plurality of blades (7), both ends of the blade (7) are provided with first protrusion (14) and second protrusion (15), the side wall of the fixed frame (5) is provided with first assembly hole (13), and the first protrusion (14) and the first assembly hole (13) are matched, the inside of the fixed frame (5) is movably provided with C-shaped frame (16), the C-shaped frame (16) is provided with second assembly frame, and the second assembly frame and the second protrusion (15) are matched, when the blade (7) is horizontal, the first assembly hole (13) and the second assembly hole are equal height.

2. The fresh air filter of claim 1, wherein: The inner side of the buckling frame (3) is fixedly connected with the tab (8).

3. The fresh air filter of claim 1, wherein: The middle part of the C-shaped frame (16) is bent to form the handle (6).

4. The fresh air filter of claim 1, wherein: The lower part of the installation section (2) is provided with Y-shaped buckling piece (9) on both sides, one end of the buckling piece (9) supports the fixed frame (5), and the end is provided with convex point (10), the convex point (10) and the recess matched with the bottom of the fixed frame (5) are matched.

5. The fresh air filter of claim 4, wherein: The end of the installation section (2) is fixedly connected with the fixing piece (11), and the fixing piece (11) and one end of the buckling piece (9) are rotatably connected.

6. The fresh air filter of claim 1, wherein: Both ends of the installation section (2) are provided with connecting section (1).

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