Air handling units with easy filter replacement

Abstract

This utility model discloses an air handling unit that facilitates filter replacement, belonging to the technical field of air handling units. It includes a unit housing, fresh air inlets located at the top and front of the housing, a filter element installed inside the housing near the fresh air inlet, and access doors hinged to the side of the housing corresponding to different zones. By adding an openable side cover that works in conjunction with the existing access door, this utility model significantly increases the size of the access opening. This provides operators with more ample operating space, allowing for flexible arm extension for quick filter element removal and removal. It also allows more light to enter the housing, enabling operators to clearly observe details such as the filter element installation structure and clip positions. This effectively avoids filter element damage or improper installation due to limited visibility, significantly improving filter element replacement efficiency and installation accuracy.

Description

Technical Field

[0001] This utility model relates to an air handling unit that facilitates filter replacement and belongs to the technical field of air handling units. Background Technology

[0002] During the operation of an air handling unit, the filter element is a key component for filtering pollutants such as dust and impurities from the air. Its filtration effect directly affects the quality of the treated air. To ensure the normal and efficient operation of the air handling unit, the filter element needs to be replaced regularly.

[0003] Currently, air handling units typically have an openable access door on the side for operators to perform maintenance tasks such as filter replacement. However, existing access doors are too small, limiting the operator's working space and making it difficult to quickly and smoothly remove the old filter and accurately install the new one. This significantly impacts the efficiency of filter replacement. Furthermore, because the air handling unit's interior is relatively enclosed, the limited external light entering through the access door results in dim lighting inside. This makes it difficult for operators to clearly observe details such as the filter's installation structure and clip positions, increasing the risk of filter damage or improper installation due to improper operation, affecting subsequent filtration. It also prolongs the replacement process, increases the operator's workload, and causes numerous inconveniences for filter replacement.

[0004] To address these issues, an air handling unit was designed that facilitates filter replacement. Utility Model Content

[0005] The main purpose of this invention is to provide an air handling unit that facilitates filter replacement, thereby solving the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] An air handling unit that facilitates filter replacement includes a unit housing, fresh air inlets located at the top and front of the unit housing, a filter installed inside the unit housing near the fresh air inlet, and access doors hinged to the side of the unit housing corresponding to different zones.

[0008] A side cover is provided on the side of the unit casing at the position corresponding to the filter element, and an inspection door is installed on the side cover near the filter element partition on the side of the unit casing.

[0009] The top and bottom of the side cover are slidably provided with insert rods, and the side cover has openings for the insert rods to pass through. The top and bottom of the inner part of the unit housing are provided with slots that cooperate with the insert rods.

[0010] The inside of the side cover is equipped with a telescopic mechanism that controls the synchronous extension and retraction of multiple sets of insert rods;

[0011] A temporary storage mechanism is provided on the side wall of the unit casing near the fresh air inlet for temporary storage of the filter element.

[0012] Preferably, the telescopic mechanism includes gears, racks, L-shaped rods, and connecting rods. The gears are rotatably mounted at the four corners inside the side cover. Racks are meshed on the outer sides of the gears. Insert rods are fixed to the ends of the racks. L-shaped rods are mounted on the sides of the gears. Connecting rods are provided between the ends of adjacent L-shaped rods.

[0013] Preferably, the telescopic mechanism further includes an adjusting wheel, which is coaxially connected to the gear and is located on the outside of the side cover.

[0014] Preferably, the temporary storage mechanism includes a vertical groove, a slider, and a support plate. The vertical groove is vertically opened on the inner side wall of the unit housing. A slider is vertically slidably arranged inside the vertical groove, and a support plate is fixed to the side of the slider.

[0015] Preferably, the temporary storage mechanism further includes a pull rod and positioning holes. The positioning holes are spaced apart on the unit housing along the length of the vertical groove. The pull rod passes through the slider and is inserted between the positioning holes, and the pull rod and the slider are slidably connected.

[0016] Preferably, the top of the tray has an arc-shaped groove, and the inside of the groove is provided with a rubber anti-slip pad.

[0017] Preferably, one side of the side cover is rotatably connected to the unit housing via a hinge, and a sealing strip is provided on the contact surface between the side cover and the unit housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model significantly expands the size of the maintenance opening by adding an openable side cover that works in conjunction with the original maintenance door. This provides operators with more operating space, allowing for flexible arm extension to quickly pick up and put down the filter element. It also allows more external light to enter the machine, enabling operators to clearly observe details such as the filter element installation structure and the position of the clips. This effectively avoids filter element damage or improper installation caused by limited operating visibility, and significantly improves filter element replacement efficiency and installation accuracy.

[0020] 2. This utility model utilizes a telescopic mechanism composed of gears, racks, L-shaped rods, connecting rods, and adjusting wheels. With the coordinated action of the insert rods and slots, it achieves integrated control of side cover disassembly and assembly. Only a single adjusting wheel needs to be rotated to simultaneously drive the extension and retraction of multiple sets of insert rods, greatly simplifying the opening and closing process of the side cover, reducing operational complexity, and improving the convenience of maintenance operations.

[0021] 3. This utility model provides a stable temporary storage space for new and old filter elements by setting a temporary storage mechanism consisting of a vertical groove, a slider, a support plate, a pull rod and a positioning hole inside the unit housing. This effectively avoids the fatigue and accidental drop risk when the operator holds the filter element, reduces labor intensity, and further ensures the safety and convenience of the replacement operation. Attached Figure Description

[0022] Figure 1 This is a front sectional view of the present invention;

[0023] Figure 2 This is the front view of the present invention;

[0024] Figure 3 This is an internal side view of the side cover of this utility model;

[0025] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle.

[0026] In the diagram: 1. Unit casing; 101. Fresh air inlet; 102. Filter element; 103. Inspection door; 2. Side cover; 3. Slot;

[0027] 4. Insert rod; 401. Through port;

[0028] 5. Telescopic mechanism; 501. Gear; 502. Rack; 503. L-shaped rod; 504. Connecting rod; 505. Adjusting wheel;

[0029] 6. Temporary storage mechanism; 601. Vertical groove; 602. Slider; 603. Support plate; 604. Tie rod; 605. Positioning hole. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0031] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Example 1

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes an air handling unit that facilitates filter replacement, including a unit housing 1, a fresh air inlet 101 opened at the top and front of the unit housing 1, a filter 102 installed inside the unit housing 1 near the fresh air inlet 101, and an inspection door 103 hinged to the side of the unit housing 1 corresponding to different zones.

[0037] A side cover 2 is provided on the side of the unit housing 1 at the position corresponding to the filter element 102, and an inspection door 103 is installed on the side cover 2 near the partition of the filter element 102 on the side of the unit housing 1.

[0038] The top and bottom of the side cover 2 are slidably provided with insert rods 4, and the side cover 2 is provided with a through opening 401 for the insert rods 4 to pass through. The top and bottom of the inner part of the unit housing 1 are provided with slots 3 that cooperate with the insert rods 4.

[0039] The side cover 2 is equipped with a telescopic mechanism 5 that controls the synchronous extension and retraction of multiple sets of insert rods 4;

[0040] A temporary storage mechanism 6 is provided on the side wall of the unit casing 1 near the fresh air inlet 101 for temporarily storing the filter element 102.

[0041] The unit housing 1 serves as the overall load-bearing structure. Its top and front fresh air inlets 101 are used to introduce air to be treated. The filter element 102 is installed inside the unit housing 1 near the fresh air inlet 101 and is responsible for filtering impurities in the air. A side cover 2 is provided on the side of the unit housing 1 corresponding to the position of the filter element 102. The maintenance door 103 near the filter element 102 is installed on the side cover 2. Compared with the traditional single maintenance door 103, the side cover 2 and the maintenance door 103 work together to greatly expand the size of the maintenance opening. This provides operators with more operating space, making it easier for them to flexibly extend their arms to pick up and put down the filter element 102. It also allows more external light to enter the interior of the unit housing 1, improving the clarity of the operator's field of vision.

[0042] The side cover 2 is fixed and opened by the cooperation of the insert rod 4 and the slot 3. The insert rod 4 at the top and bottom of the side cover 2 can slide along the opening 401. When the insert rod 4 is inserted into the slot 3 at the top and bottom of the unit housing 1, the side cover 2 is fixed stably. When it needs to be opened, the insert rod 4 is pulled out of the slot 3 by the telescopic mechanism 5 inside the side cover 2, which can release the fixation. In addition, the temporary storage mechanism 6 on the side wall of the unit housing 1 near the fresh air inlet 101 can temporarily place the new and old filter elements 102, avoiding the fatigue and risk of dropping when the operator holds the filter element 102, and further improving the convenience of replacement.

[0043] Example 2

[0044] The solution in Example 1 will be further described below with reference to its specific working method.

[0045] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the telescopic mechanism 5 further includes a gear 501, a rack 502, an L-shaped rod 503 and a connecting rod 504. The gear 501 is rotatably mounted at the four corners inside the side cover 2. The rack 502 is meshed on the outer side of the gear 501. The insert rod 4 is fixed to the end of the rack 502. The L-shaped rod 503 is mounted on the side of the gear 501. A connecting rod 504 is provided between the ends of adjacent L-shaped rods 503.

[0046] The L-shaped rods 503 installed on the side of each gear 501 are connected by the connecting rods 504 to form a linkage structure. When the side cover 2 needs to be opened, the inspection door 103 on the side cover 2 is opened first, and then one of the gears 501 is controlled to rotate from the inside. Through the transmission of the L-shaped rods 503 and the connecting rods 504, the other three gears 501 rotate synchronously, thereby driving the rack 502 to slide in the horizontal direction. Finally, the insertion rod 4 is synchronously extended or retracted along the opening 401, completing the fixing or separation of the side cover 2 from the unit housing 1.

[0047] like Figure 3As shown, in a preferred embodiment, based on the above method, the telescopic mechanism 5 further includes an adjusting wheel 505. The adjusting wheel 505 is coaxially connected to the gear 501, and the adjusting wheel 505 is located on the outside of the side cover 2. The use of the adjusting wheel 505 allows for convenient manual adjustment.

[0048] like Figure 1 As shown, in a preferred embodiment, based on the above method, the temporary storage mechanism 6 further includes a vertical groove 601, a slider 602 and a support plate 603. The vertical groove 601 is vertically opened on the inner side wall of the unit housing 1. The slider 602 is vertically slidably arranged inside the vertical groove 601. The support plate 603 is fixed on the side of the slider 602 for placing the filter element 102.

[0049] When in use, the filter element 102 can be temporarily stored on the top of the tray 603. For ease of use, the slider 602 can be dragged to slide inside the vertical groove 601 to adjust the working height of the tray 603.

[0050] like Figure 1 As shown, in a preferred embodiment, based on the above method, the temporary storage mechanism 6 further includes a pull rod 604 and a positioning hole 605. The positioning hole 605 is spaced along the length of the vertical groove 601 on the unit housing 1. The pull rod 604 passes through the slider 602 and is inserted between the positioning hole 605, and the pull rod 604 and the slider 602 are slidably connected.

[0051] Positioning holes 605 are spaced apart along the length of the vertical groove 601 and cooperate with the pull rod 604 that passes through the slider 602. When the pull rod 604 is pulled to disengage from the positioning hole 605, the slider 602 can slide along the vertical groove 601 to adjust the height of the support plate 603. After the adjustment is completed, the pull rod 604 is released and inserted into the corresponding positioning hole 605 to fix the slider 602.

[0052] like Figure 1 As shown, in a preferred embodiment, based on the above method, the top of the tray 603 is further provided with an arc-shaped groove, and the inside of the groove is provided with a rubber anti-slip pad. The tray 603 is made of aluminum alloy plate with a thickness of 5mm and is stamped. The overall dimensions are 400mm in length and 200mm in width. The radius of the arc-shaped groove is 150mm (suitable for cylindrical filter elements with a diameter of 300mm), the groove depth is 20mm, the rubber anti-slip pad is 5mm thick (Shore hardness 60°), and the maximum load-bearing capacity of the tray is 10kg. The arc-shaped groove on the top of the tray 603 and the internal rubber anti-slip pad can increase the stability of the filter element 102 and prevent it from sliding and falling.

[0053] like Figure 2As shown, in a preferred embodiment, based on the above method, one side of the side cover 2 is rotatably connected to the unit housing 1 by a hinge, and a sealing strip is provided on the contact surface between the side cover 2 and the unit housing 1. When the side cover 2 is unlocked, the side cover 2 can be rotated to one side to avoid affecting the replacement.

[0054] Example 3

[0055] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0056] When the filter element 102 needs to be replaced, the operator first opens the inspection door 103 on the side cover 2, and then controls the adjusting wheel 505 from the inside. The adjusting wheel 505 drives the gear 501 to rotate. Through the linkage between the L-shaped rod 503 and the connecting rod 504, all gears 501 rotate synchronously and drive the rack 502 to slide, so that the insertion rod 4 is pulled out from the slot 3 of the unit housing 1, releasing the fixation of the side cover 2. Then, the side cover 2 is rotated around the hinge. At this time, the inspection door 103 installed on the side cover 2 opens together with the side cover 2, revealing the filter element 102 installation area inside the unit housing 1. The greatly enlarged opening provides ample space and light for operation.

[0057] After the operator removes the old filter element 102, he pulls the lever 604 of the temporary storage mechanism 6 to disengage it from the positioning hole 605, slides the slider 602 along the vertical groove 601 to adjust the tray 603 to a height that is easy to place, inserts the lever 604 into the corresponding positioning hole 605 to fix the tray 603, and then places the old filter element 102 into the arc-shaped groove of the tray 603.

[0058] When installing a new filter element 102, the new filter element 102 can be temporarily placed on the tray 603. Then, the new filter element 102 can be taken out from the tray 603 and accurately installed into the designated position inside the unit housing 1 near the fresh air inlet 101. After installation, the old filter element 102 can be removed from the tray 603 and the slider 602 can be reversed to reset the tray 603.

[0059] Finally, the adjusting wheel 505 is rotated in the opposite direction, and the insertion rod 4 is driven to re-insert into the slot 3 through the telescopic mechanism 5, so that the side cover 2 fits tightly with the unit housing 1. The sealing strip on the fitting surface ensures the seal, thus completing the entire filter element 102 replacement process.

[0060] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. An air handling unit that facilitates filter replacement, comprising a unit housing (1), a fresh air inlet (101) located at the top and front of the unit housing (1), a filter element (102) installed inside the unit housing (1) near the fresh air inlet (101), and an inspection door (103) hinged to the side of the unit housing (1) corresponding to different zones; Its features are: A side cover (2) is provided on the side of the unit housing (1) at the position corresponding to the filter element (102), and an inspection door (103) is installed on the side cover (2) near the filter element (102) partition on the side of the unit housing (1); The top and bottom of the side cover (2) are slidably provided with insert rods (4), and the side cover (2) is provided with a through opening (401) for the insert rods (4) to pass through. The top and bottom of the unit housing (1) are provided with slots (3) that cooperate with the insert rods (4). The side cover (2) is equipped with a telescopic mechanism (5) that controls the synchronous telescopic sliding of multiple sets of insert rods (4); A temporary storage mechanism (6) is provided on the side wall of the unit casing (1) near the fresh air inlet (101) for temporarily storing the filter element (102).

2. The air handling unit with easy filter replacement according to claim 1, characterized in that: The telescopic mechanism (5) includes a gear (501), a rack (502), an L-shaped rod (503), and a connecting rod (504). The gear (501) is rotatably mounted at the four corners inside the side cover (2). The rack (502) is meshed on the outer side of the gear (501). The insert rod (4) is fixed to the end of the rack (502). The L-shaped rod (503) is mounted on the side of the gear (501). A connecting rod (504) is provided between the ends of adjacent L-shaped rods (503).

3. The air handling unit with easy filter replacement according to claim 2, characterized in that: The telescopic mechanism (5) also includes an adjusting wheel (505), which is coaxially connected to the gear (501) and is located on the outside of the side cover (2).

4. The air handling unit with easy filter replacement according to claim 1, characterized in that: The temporary storage mechanism (6) includes a vertical groove (601), a slider (602) and a support plate (603). The vertical groove (601) is vertically opened on the inner side wall of the unit housing (1). The slider (602) is vertically slidably arranged inside the vertical groove (601), and the support plate (603) is fixed on the side of the slider (602).

5. The air handling unit with easy filter replacement according to claim 4, characterized in that: The temporary storage mechanism (6) also includes a pull rod (604) and a positioning hole (605). The positioning hole (605) is spaced along the length of the vertical groove (601) on the unit housing (1). The pull rod (604) passes through the slider (602) and is inserted between the positioning hole (605). The pull rod (604) and the slider (602) are slidably connected.

6. The air handling unit with easy filter replacement according to claim 4, characterized in that: The top of the tray (603) has an arc-shaped groove, and the inside of the groove is provided with a rubber anti-slip pad.

7. The air handling unit with easy filter replacement according to claim 1, characterized in that: One side of the side cover (2) is rotatably connected to the unit housing (1) by a hinge, and a sealing strip is provided on the contact surface between the side cover (2) and the unit housing (1).

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