A HVAC filter device with easy-to-replace filter element

Abstract

This utility model relates to the field of HVAC technology and discloses an HVAC filtration device that facilitates filter replacement. It includes an air inlet pipe with a quick-release mechanism for easy component maintenance. A fixing plate is symmetrically installed on the inner wall of the air inlet pipe, and a rubber pad is fixedly installed in the dovetail groove inside the fixing plate. This utility model employs an interlocking structure of the dovetail block and the dovetail groove of the fixing plate, along with a quick-locking mechanism using a baffle and a locking rod. Without the need for any tools, operators can easily disassemble and assemble the filter plate in a short time with simple push-pull and rotation actions. This simplifies the filter replacement process, improves replacement efficiency, and reduces maintenance costs. Simultaneously, the rubber pad deforms under pressure during filter plate installation, tightly filling the gap between the filter plate and the dovetail groove of the fixing plate, effectively preventing unfiltered air from leaking out, ensuring air filtration effect, and improving the operating quality of the HVAC system.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning technology, and in particular to a heating, ventilation and air conditioning filtration device that facilitates filter element replacement. Background Technology

[0002] HVAC filter devices that facilitate filter replacement are specialized devices that, based on traditional HVAC filter systems, achieve convenient disassembly and installation of filter elements through structural optimization. Their core objective is to reduce the difficulty of filter replacement, shorten maintenance time, and improve equipment operating efficiency.

[0003] Patent CN222123466U discloses a heating, ventilation, and air conditioning (HVAC) filtration device, including an air inlet duct with a protective mesh on its left side. A filter screen is installed inside the air inlet duct, and a vibration assembly for vibrating the filter screen is located on its left side. Mounting rods are connected to the top and bottom right sides of the air inlet duct's inner cavity. Through a structural design of a housing, motor, rotating shaft, eccentric wheel, box, support rod, and spring, the motor drives the rotating shaft to rotate. Under the action of the spring, the eccentric wheel drives the filter screen to reciprocate, causing the filter screen to vibrate and effectively clean the dust embedded in it, improving air intake filtration efficiency. When the user turns on the motor, the motor drives the rotating shaft to rotate, which in turn drives the eccentric wheel. Under the action of the spring, the eccentric wheel drives the filter screen to reciprocate, shaking off the dust embedded in the filter screen and improving the cleaning effect.

[0004] In the above-mentioned patent, the filter screen is fixed by tightening screws during use. When the filter screen needs to be replaced or deeply cleaned, the screws need to be loosened one by one. The operation is cumbersome and time-consuming, and the maintenance is not convenient. In addition, the repeated tapping of the filter screen by the tapping block will generate obvious noise, thereby affecting the environmental comfort. Based on this, a HVAC filter device that is easy to replace the filter element is proposed for improvement. Utility Model Content

[0005] In view of the problems of inconvenient installation and disassembly and noise pollution of existing filters, this utility model is proposed.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a HVAC filter device that facilitates filter element replacement, including an air inlet pipe, the air inlet pipe including a quick-release mechanism for easy component maintenance, fixing plates symmetrically installed on the inner wall of the air inlet pipe, and a rubber pad fixedly installed in the dovetail groove inside the fixing plate;

[0007] The air inlet pipe is equipped with a filter plate, and dovetail blocks are fixedly connected to both the upper and lower ends of the filter plate. The dovetail blocks are fitted into the dovetail groove inside the fixed plate.

[0008] A baffle is rotatably connected to the outside of the air inlet pipe. The middle surface of the baffle is fitted into the slot at the top of the filter plate handle. A fixed seat is fixedly connected to the outside of the air inlet pipe. One end of the baffle is fitted into the groove inside the fixed seat. A locking rod is slidably connected inside the fixed seat. One end of the locking rod is fitted into the groove at one end of the baffle.

[0009] As a preferred embodiment, a spring is sleeved on the surface of the clamping rod, and the two ends of the spring are respectively connected to a circular plate at one end of the clamping rod and the side wall of the fixing seat.

[0010] As a preferred embodiment, a motor is fixedly mounted on one end of the inner wall of the air inlet pipe via a mounting bracket, and a rotating rod is fixedly sleeved on the output shaft of the motor. One end of the rotating rod passes through the bottom of the support plate and extends to one side of the filter plate.

[0011] As a preferred embodiment, a fan is fixedly sleeved on the surface of the rotating rod near the motor, and a cleaning brush is fixedly sleeved on the end of the rotating rod near the filter plate, with the bristles of the cleaning brush in contact with one side of the filter plate.

[0012] As a preferred embodiment, a maintenance door is movably connected to one side of the air inlet pipe, and a protective net is fixedly installed on one end of the inner wall of the air inlet pipe.

[0013] As a preferred embodiment, a dust collection box is fixedly sleeved at the bottom end of the air inlet pipe, the air inlet pipe is connected to the dust collection box, and a dust collection container is slidably connected to the inner wall of the dust collection box.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. This utility model adopts an interlocking structure of dovetail block and dovetail groove of fixed plate, as well as a quick locking mechanism of baffle and locking rod. Without the aid of any tools, the operator can complete the disassembly and assembly of filter plate in a short time with simple push, pull and rotation actions. This simplifies the filter replacement process, improves filter replacement efficiency, and reduces maintenance costs. At the same time, the rubber pad will deform due to compression during filter plate installation, tightly filling the gap between filter plate and dovetail groove of fixed plate, effectively preventing unfiltered air from leaking out of the gap, ensuring air filtration effect and improving the operating quality of HVAC system.

[0016] 2. This utility model has no complicated parts, making maintenance more convenient and reducing maintenance difficulty. The fan and cleaning brush are coaxially linked, blowing air while brushing away dust from the filter plate, avoiding the impact noise caused by traditional knocking dust removal methods, making the indoor environment quieter and more comfortable, and improving environmental comfort. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 for Figure 3 A magnified structural diagram at point B in the middle.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Air inlet duct; 11. Maintenance door; 12. Protective net; 2. Dust collection box; 21. Dust collection tray; 3. Filter plate; 4. Quick release mechanism; 41. Fixing plate; 42. Dovetail block; 43. Rubber pad; 44. Baffle; 45. Fixing base; 46. Locking rod; 47. Spring; 5. Motor; 6. Rotating rod; 7. Fan; 8. Cleaning brush; 9. Support plate. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Reference Figures 1-4 This is the first embodiment of the present utility model, which provides a HVAC filter device that is easy to replace the filter element. It includes an air inlet pipe 1, the air inlet pipe 1 includes a quick-release mechanism 4 for easy component maintenance, and a fixing plate 41 is symmetrically installed on the inner wall of the air inlet pipe 1. A rubber pad 43 is fixedly installed in the dovetail groove inside the fixing plate 41.

[0025] The air inlet pipe 1 is equipped with a filter plate 3. Both the upper and lower ends of the filter plate 3 are fixedly connected with dovetail blocks 42, which are fitted into the dovetail groove inside the fixed plate 41.

[0026] A baffle 44 is rotatably connected to the outside of the air inlet pipe 1. The middle surface of the baffle 44 is fitted into the slot at the top of the handle of the filter plate 3. A fixed seat 45 is fixedly connected to the outside of the air inlet pipe 1. One end of the baffle 44 is fitted into the groove inside the fixed seat 45. A locking rod 46 is slidably connected inside the fixed seat 45. One end of the locking rod 46 is fitted into the groove at one end of the baffle 44.

[0027] A spring 47 is fitted on the surface of the lever 46, and the two ends of the spring 47 are connected to the circular plate at one end of the lever 46 and the side wall of the fixing seat 45, respectively.

[0028] During use, when installing the filter plate 3, align the dovetail blocks 42 at the top and bottom ends of the filter plate 3 with the dovetail groove of the fixing plate 41, and push them horizontally along the groove. When the dovetail blocks 42 are fully embedded in the dovetail groove, the rubber pad 43 is squeezed and deformed, filling the gap between the filter plate 3 and the dovetail groove of the fixing plate 41, forming a seal and buffering vibration, thus completing the initial installation.

[0029] Next, rotate the outer baffle 44 so that its middle part is inserted into the slot at the top of the handle of the filter plate 3, and at the same time, one end of the baffle 44 is inserted into the slot of the fixing seat 45 to complete the initial positioning. Then, under the initial thrust of the spring 47, the end of the locking rod 46 is inserted into the slot at one end of the baffle 44, locking the baffle 44 on the fixing seat 45, thereby restricting the lateral movement of the filter plate 3, thus completing the installation of the filter plate 3.

[0030] This design employs a dovetail block 42 and a dovetail groove of a fixing plate 41, along with a quick-locking mechanism of a baffle 44 and a locking rod 46. Without the need for any tools, operators can easily disassemble and assemble the filter plate 3 in a short time by simply pushing, pulling, and rotating. This simplifies the filter replacement process, improves filter replacement efficiency, and reduces maintenance costs. At the same time, the rubber pad 43 deforms due to compression during the installation of the filter plate 3, tightly filling the gap between the filter plate 3 and the dovetail groove of the fixing plate 41. This effectively prevents unfiltered air from leaking out of the gap, ensuring air filtration effect and improving the operating quality of the HVAC system.

[0031] Reference Figures 1-4 This is the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is that: a motor 5 is fixedly installed on one end of the inner wall of the air inlet pipe 1 by a mounting bracket, and a rotating rod 6 is fixedly sleeved on the output shaft of the motor 5. One end of the rotating rod 6 passes through the bottom of the support plate 9 and extends to one side of the filter plate 3.

[0032] A fan 7 is fixedly sleeved on the end of the rotating rod 6 near the motor 5, and a cleaning brush 8 is fixedly sleeved on the end of the rotating rod 6 near the filter plate 3. The bristles of the cleaning brush 8 are in contact with one side of the filter plate 3.

[0033] The bottom end of the air inlet pipe 1 is fixedly connected to the dust collection box 2, the air inlet pipe 1 and the dust collection box 2 are connected, and the inner wall of the dust collection box 2 is slidably connected to the dust collection box 21.

[0034] During use, the motor 5 is started, and its output shaft drives the rotating rod 6 to rotate. On the one hand, the rotating rod 6 drives the fan 7 to rotate, and the fan 7 generates suction, which causes air to flow in from the air inlet pipe 1. During the air flow, the filter plate 3 filters the air and intercepts dust and impurities. On the other hand, the rotating rod 6 drives the cleaning brush 8 to rotate synchronously. The bristles of the cleaning brush 8 are in close contact with one side of the filter plate 3. Through the mechanical force of rotation, the dust attached to the surface of the filter plate 3 is brushed off.

[0035] The dust brushed off by the cleaning brush 8 falls downwards under the action of gravity and airflow, and falls into the dust collection box 21 through the connecting channel between the air inlet pipe 1 and the dust collection box 2. When the dust collection box 21 is full of dust, it can be directly pulled out from the dust collection box 2 for easy cleaning.

[0036] This design has no complicated parts, making maintenance easier and reducing maintenance difficulty. The fan 7 and cleaning brush 8 are coaxially linked, blowing air while brushing away dust from the filter plate 3, avoiding the impact noise caused by traditional knocking dust removal methods, making the indoor environment quieter and more comfortable, and improving environmental comfort.

[0037] Reference Figures 1-4 This is the third embodiment of the present utility model. The difference between this embodiment and the second embodiment is that a maintenance door 11 is movably connected to one side of the air inlet pipe 1, and a protective net 12 is fixedly installed on one end of the inner wall of the air inlet pipe 1.

[0038] During use, the maintenance door 11 does not require disassembling the entire device, allowing maintenance personnel to quickly access the internal motor 5, rotating rod 6, fan 7, and cleaning brush 8. The door can be opened quickly for cleaning or adjustment, reducing maintenance time.

[0039] The protective net 12 can block larger debris that may be present in the air, preventing foreign objects from getting tangled in the fan blades 7 or hitting the cleaning brush 8.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heating, ventilation and air conditioning filter device facilitating replacement of a filter cartridge, comprising an air inlet pipe (1), characterized in that: The air inlet pipe (1) includes a quick-release mechanism (4) for easy component maintenance. Fixing plates (41) are symmetrically installed on the inner wall of the air inlet pipe (1). A rubber pad (43) is fixedly installed in the dovetail groove inside the fixing plate (41). The air inlet pipe (1) is provided with a filter plate (3), and dovetail blocks (42) are fixedly connected to both the upper and lower ends of the filter plate (3). The dovetail blocks (42) are fitted into the dovetail groove inside the fixed plate (41). A baffle (44) is rotatably connected to the outside of the air inlet pipe (1). The middle surface of the baffle (44) is fitted into the top slot of the handle of the filter plate (3). A fixed seat (45) is fixedly connected to the outside of the air inlet pipe (1). One end of the baffle (44) is fitted into the groove inside the fixed seat (45). A locking rod (46) is slidably connected inside the fixed seat (45). One end of the locking rod (46) is fitted into the groove at one end of the baffle (44).

2. The filter device according to claim 1, wherein: A spring (47) is fitted on the surface of the lever (46), and the two ends of the spring (47) are respectively connected to the circular plate at one end of the lever (46) and the side wall of the fixing seat (45).

3. The filter device according to claim 1, wherein: One end of the inner wall of the air inlet pipe (1) is fixedly mounted with a motor (5) by a mounting bracket. The output shaft of the motor (5) is fixedly sleeved with a rotating rod (6). One end of the rotating rod (6) passes through the bottom of the support plate (9) and extends to one side of the filter plate (3).

4. The filter device according to claim 3, wherein: A fan (7) is fixedly sleeved on the surface of the rotating rod (6) near the motor (5), and a cleaning brush (8) is fixedly sleeved on the end of the rotating rod (6) near the filter plate (3). The bristles of the cleaning brush (8) are in contact with one side of the filter plate (3).

5. The filter device according to claim 1, wherein: A maintenance door (11) is movably connected to one side of the air inlet pipe (1), and a protective net (12) is fixedly installed on one end of the inner wall of the air inlet pipe (1).

6. The filter device of claim 1, wherein: The bottom end of the air inlet pipe (1) is fixedly sleeved with a dust collection box (2), the air inlet pipe (1) is connected to the dust collection box (2), and a dust collection box (21) is slidably connected to the inner wall of the dust collection box (2).

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