Central air conditioning air inlet filtering device

Abstract

This utility model discloses a central air conditioning intake air filtration device, including a housing fixedly installed on a suspended ceiling. The housing has an air duct, and also includes a mounting frame and a displacement assembly. The mounting frame has a mounting groove, in which a fixed rod is disposed. A filter plate is disposed in the mounting groove, and multiple guardrails are spaced apart within the mounting groove. The two ends of the guardrails are rotatably connected to the inner sidewall of the mounting groove and the fixed rod. A movable rod, which is slidably connected to each guardrail, is driven by the fixed rod. The mounting frame and the housing are connected by a limiting assembly. The displacement assembly includes an electric push rod and an elastic member. The electric push rod is fixedly installed at the top of the suspended ceiling and can push the movable rod to move. The elastic member connects the fixed rod and the movable rod respectively. With the above design, the filter plate can be disassembled and replaced when a large amount of dust adheres to it. Simultaneously, when the central air conditioning is not in use, the air duct is shielded, extending the single-use lifespan of the filter plate and reducing the replacement frequency.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning equipment technology, specifically relating to a central air conditioning air intake filter device. Background Technology

[0002] Central air conditioning is a large-scale air conditioning system that centrally regulates the indoor air environment. It connects multiple indoor units through a main unit. The indoor units of a central air conditioning system are usually hidden in the ceiling, while the air intake structure is installed on the ceiling. This design not only saves space but also maintains the overall aesthetics of the interior.

[0003] Chinese patent CN222393056U discloses a central air conditioning air intake structure that is easy to clean. This design includes an air intake grille and a base plate. The base plate has ventilation openings, and a rectangularly distributed enclosure is connected to the lower end of the base plate. A set of vertical partitions is mirrored on the left and right sides of the ventilation openings, forming independent chambers with the left and right sides of the enclosure, respectively. Connecting parts are provided on both sides of the air intake grille, with a laterally retractable baffle on the inner end of each connecting part. The bottom end of each vertical partition has a flange extending laterally into the corresponding chamber. A dust filter layer is also provided between the air intake grille and the base plate. This design utilizes movable baffles to allow the air intake grille to be removed from the base plate, making it easier and faster to clean the dust filter layer.

[0004] In real life, the temperature difference between indoors and outdoors or the wind will drive the air to move. When the central air conditioning is not in use, the dust filter layer of the above solution is continuously exposed to the indoor environment. Fine dust in the air can easily pass through the air intake grille and adhere to the dust filter layer during the air flow, resulting in a lot of dust adsorbed by the dust filter layer, a short service life, and a high replacement frequency. Utility Model Content

[0005] The present invention aims to provide a central air conditioning intake air filtration device to extend the service life of the filter plate and reduce the replacement frequency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A central air conditioning intake air filtration device includes a housing fixedly installed on a suspended ceiling. The housing has a vertically penetrating air duct. It also includes a mounting frame and a displacement assembly. The mounting frame has a vertically penetrating mounting groove. A fixed rod is disposed within the mounting groove. A filter plate is disposed within the mounting groove. Multiple guardrails are spaced apart below the filter plate within the mounting groove. The two ends of each guardrail are rotatably connected to the inner sidewall of the mounting groove and the outer sidewall of the fixed rod. A movable rod, which is slidably connected to each guardrail, is driven within the fixed rod. The mounting frame is connected to the housing via a limiting assembly. The displacement assembly includes an electric push rod and an elastic member. The electric push rod is fixedly installed at the top of the suspended ceiling, and its output end can push the movable rod to move. The elastic member connects the fixed rod and the movable rod respectively.

[0008] The principle and effects of this technical solution:

[0009] In the initial state, the electric push rod is in the retracted state, with its output end located outside the air duct. All the panels are horizontal, and adjacent panels are connected end to end, with multiple panels blocking the air duct. When the central air conditioning is started, the electric push rod extends, and its output end contacts the movable rod, pushing the movable rod to move. As the movable rod moves, it causes the panels to rotate to open the air duct, while simultaneously compressing the elastic component. When indoor air passes through the filter plate, dust adheres to the filter plate. When the central air conditioning is turned off, the electric push rod retracts, and the elastic force of the elastic component drives the movable rod to return to its original position, causing the panels to rotate in the opposite direction, blocking the air duct again. When the filter plate needs to be replaced, the limiting component is unlocked, the mounting frame and filter plate are removed, the new filter plate is installed on the mounting frame, and then the mounting frame and housing are connected again through the limiting component.

[0010] With the above settings, the filter plates can be disassembled and replaced when a lot of dust adheres to them. At the same time, by using the movable rods and guardrails, the air ducts can be shielded when the central air conditioning is not in use, thereby reducing the amount of dust adhering to the filter plates, extending the service life of the filter plates, and reducing the replacement frequency.

[0011] In this invention, a sliding groove is provided along the length of the fixed rod, and a through groove is provided on the inner side wall of the sliding groove. Multiple fixed shafts passing through the through grooves are spaced apart on the side wall of the movable rod. A connecting rod is rotatably sleeved on the outside of each fixed shaft, and the end of each connecting rod is rotatably connected to the corresponding railing plate. Through the above arrangement, the purpose of causing the movable rod to drive the railing plates to rotate during movement is achieved.

[0012] In this invention, a vertical rod is fixedly installed at the top of one end of the movable rod, slidingly passing through the top wall of the groove, and the output end of the electric push rod can contact the vertical rod. This arrangement achieves the purpose of enabling the electric push rod to move the movable rod.

[0013] In this invention, the elastic member is configured as a first compression spring, which is disposed within a groove. The two ends of the first compression spring are respectively connected to the side of the movable rod away from the electric push rod and the inner end wall of the groove. This configuration allows the elastic member to have elastic force when the electric push rod is extended, and to drive the movable rod back to its original position when the electric push rod is retracted.

[0014] In this utility model, the inner wall of the air duct is provided with a slot, and the outer wall of the mounting frame is provided with a limiting groove that can be aligned with the slot. The limiting component includes a limiting rod that is slidably disposed in the limiting groove and a second compression spring. The two ends of the second compression spring are respectively connected to the limiting rod and the inner end wall of the limiting groove.

[0015] In this invention, a lever that slides through the mounting frame is fixedly provided on the radial outer side wall of the limiting rod.

[0016] The principle and effects of this technical solution:

[0017] Install the mounting frame in front of the housing, and move the lever to move the limiting rod into the limiting groove. During this process, the second compression spring is compressed and deformed, and has elasticity. After inserting the mounting frame into the air duct, align the limiting groove with the slot. At this time, the second compression spring pushes the limiting rod into the slot.

[0018] With the above settings, the mounting frame and the housing can be assembled using the movable limiting rod, and the mounting frame can be easily disassembled when the filter plate needs to be replaced.

[0019] In this invention, a U-shaped pressure plate is fixedly installed on the top of the housing, and a placement groove is provided on the top of the inner wall of the air duct. The bottom of the filter plate is placed on the bottom wall of the placement groove, and the top of the filter plate can abut against the bottom of the pressure plate. Through this arrangement, when the mounting frame is connected to the housing, the bottom wall of the placement groove and the pressure plate press the filter plate tightly, ensuring that the air flowing through the central air conditioning system passes through the filter plate first, thus improving the purification effect on indoor air. Attached Figure Description

[0020] Figure 1 This is an isometric view of the overall structure of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 Partial axonometric sectional view of this utility model Figure 1 ;

[0023] Figure 4 Partial axonometric sectional view of this utility model Figure 2 ;

[0024] Figure 5Disassembly of some components of this utility model Figure 1 ;

[0025] Figure 6 Disassembly of some components of this utility model Figure 2 ;

[0026] Figure 7 This is a partial sectional view of the present invention. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0028] The reference numerals in the accompanying drawings include: 10, housing; 11, air duct; 12, slot; 13, pressure plate; 20, mounting frame; 21, mounting groove; 22, limiting groove; 23, placement groove; 30, fixing rod; 31, sliding groove; 32, through groove; 40, filter plate; 50, guardrail; 60, movable rod; 61, fixed shaft; 62, connecting rod; 63, vertical rod; 71, limiting rod; 72, second compression spring; 73, lever; 81, electric push rod; 82, elastic component; 100, ceiling.

[0029] Example:

[0030] As attached Figure 1-7 As shown, this utility model discloses a central air conditioning intake air filtration device, including a housing 10 fixedly installed on a ceiling 100. The housing 10 has a vertically penetrating air duct 11, and also includes a mounting frame 20 and a displacement assembly. The mounting frame 20 has a vertically penetrating mounting groove 21, a fixing rod 30 is provided in the mounting groove 21, a filter plate 40 is provided in the mounting groove 21, and multiple guardrails 50 are spaced apart below the filter plate 40 in the mounting groove 21. The two ends of the guardrails 50 are connected to the inner sidewall of the mounting groove 21 and the fixing rod 30. The outer wall is rotatably connected, and the fixed rod 30 is slidably provided with a movable rod 60 that is transmittedly connected to each of the railings 50. The mounting frame 20 is connected to the housing 10 through a limiting component. The displacement component includes an electric push rod 81 and an elastic member 82. The electric push rod 81 is fixedly installed on the top of the ceiling 100, and the output end of the electric push rod 81 can push the movable rod 60 to move. The elastic member 82 is connected to the fixed rod 30 and the movable rod 60 respectively. The electric push rod 81 is electrically connected to the controller of the central air conditioner.

[0031] In this embodiment, a sliding groove 31 is provided inside the fixed rod 30 along its length direction, and a through groove 32 is provided on the inner side wall of the sliding groove 31. A plurality of fixed shafts 61 passing through the through grooves 32 are provided at intervals on the side wall of the movable rod 60. A connecting rod 62 is rotatably sleeved on the outside of each fixed shaft 61, and the end of each connecting rod 62 is rotatably connected to the corresponding guardrail 50.

[0032] In this embodiment, a vertical rod 63 is fixedly provided at the top of one end of the movable rod 60, which slides through the top wall of the slide groove 31, and the output end of the electric push rod 81 can contact the vertical rod 63.

[0033] In this embodiment, the elastic member 82 is configured as a first compression spring, which is disposed in the slide groove 31, and the two ends of the first compression spring are respectively connected to the side of the movable rod 60 away from the electric push rod 81 and the inner end wall of the slide groove 31.

[0034] In this embodiment, the inner wall of the air duct 11 is provided with a slot 12, and the outer wall of the mounting frame 20 is provided with a limiting groove 22 that can be aligned with the slot 12. The limiting component includes a limiting rod 71 and a second compression spring 72 that are slidably disposed in the limiting groove 22. The two ends of the second compression spring 72 are respectively connected to the limiting rod 71 and the inner end wall of the limiting groove 22.

[0035] In this embodiment, a lever 73 that slides through the mounting frame 20 is fixedly provided on the radial outer side wall of the limiting rod 71.

[0036] In this embodiment, a mouth-shaped pressure plate 13 is fixedly provided on the top of the housing 10, a placement groove 23 is provided on the top of the inner sidewall of the air duct 11, the bottom of the filter plate 40 is placed on the bottom wall of the placement groove 23, and the top of the filter plate 40 can abut against the bottom of the pressure plate 13.

[0037] The specific implementation process is as follows:

[0038] Initially, the electric push rod 81 is in a retracted state, with its output end located outside the air duct 11. All the guardrails 50 are horizontal, with adjacent guardrails 50 connected end-to-end, obscuring the air duct 11. When the central air conditioning is activated, the electric push rod 81 extends. Its output end contacts the movable rod 60, pushing it to move. As the movable rod 60 moves, it causes the guardrails 50 to rotate, opening the air duct 11 and simultaneously compressing the elastic structure. When indoor air passes through filter plate 40, dust adheres to filter plate 40. When the central air conditioning is turned off, the electric push rod 81 is retracted, and the elastic force of the elastic component 82 drives the movable rod 60 to reset and drive each panel 50 to rotate in the opposite direction, thus blocking the air duct 11 again. When filter plate 40 needs to be replaced, the limiting component is unlocked, the mounting frame 20 and filter plate 40 are removed, the new filter plate 40 is installed on the mounting frame 20, and then the mounting frame 20 and the housing 10 are connected through the limiting component.

[0039] Install the mounting frame 20 in front of the housing 10, and move the lever 73 to move the limiting rod 71 into the limiting groove 22. During this process, the second compression spring 72 is compressed and deformed and has elasticity. After the mounting frame 20 is inserted into the air duct 11, the limiting groove 22 is aligned with the slot 12. At this time, the second compression spring 72 pushes the limiting rod 71 to be inserted into the slot 12.

[0040] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0041] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A central air conditioning air inlet filtering device, comprising a housing fixedly installed on a ceiling, the housing having an air duct through from top to bottom, characterized in that, Also includes: The mounting frame has a vertically through mounting groove, a fixing rod is installed in the mounting groove, a filter plate is installed in the mounting groove, and multiple guardrails are spaced apart below the filter plate in the mounting groove. The two ends of the guardrails are rotatably connected to the inner side wall of the mounting groove and the outer side wall of the fixing rod. A movable rod that is slidably connected to each of the guardrails is installed in the fixing rod. The mounting frame is connected to the housing through a limiting component. The displacement assembly includes an electric push rod and an elastic member. The electric push rod is fixedly installed at the top of the ceiling, and its output end can push a movable rod to move. The elastic member is connected to both the fixed rod and the movable rod.

2. The central air conditioning air intake filtering device of claim 1, wherein: The fixed rod has a sliding groove along its length, and the inner side wall of the sliding groove has a through groove. The side wall of the movable rod has multiple fixed shafts passing through the through grooves at intervals. Each fixed shaft is rotatably sleeved with a connecting rod, and the end of each connecting rod is rotatably connected to the corresponding guardrail.

3. The central air conditioning intake air filtration device as described in claim 2, characterized in that: A vertical rod is fixedly installed at the top of one end of the movable rod, which slides through the top wall of the groove, and the output end of the electric push rod can contact the vertical rod.

4. The central air conditioning air intake filtering device of claim 3, wherein: The elastic component is configured as a first compression spring, which is disposed in the slide groove, and the two ends of the first compression spring are respectively connected to the side of the movable rod away from the electric push rod and the inner end wall of the slide groove.

5. The central air conditioning air intake filtering device of claim 1, wherein: The inner wall of the air duct is provided with a slot, and the outer wall of the mounting frame is provided with a limiting groove that can be aligned with the slot. The limiting component includes a limiting rod that is slidably disposed in the limiting groove and a second compression spring. The two ends of the second compression spring are respectively connected to the limiting rod and the inner end wall of the limiting groove.

6. The central air conditioning air intake filtering device of claim 5, wherein: The radial outer side wall of the limiting rod is fixedly provided with a lever that slides through the mounting frame.

7. The central air conditioning air intake filtering device of claim 1, wherein: The top of the housing is fixedly provided with an octagonal pressure plate, the top of the inner wall of the air duct is provided with a placement groove, the bottom of the filter plate is placed on the bottom wall of the placement groove, and the top of the filter plate can abut against the bottom of the pressure plate.

Images