A kind of heating ventilation and air conditioning air duct filter screen cleaning device

Abstract

This utility model proposes a cleaning device for HVAC duct filters, relating to the field of HVAC duct filter cleaning technology. It includes a cleaning box, cover plate, telescopic cylinder, mounting plate, U-shaped frame, limiting component, ultrasonic transducer, spray assembly, and overflow pipe. This application can perform dual cleaning of HVAC duct filters (i.e., ultrasonic cleaning combined with spray rinsing), resulting in excellent cleaning effect. Only the duct filter needs to be placed and limited; manual cleaning with brushes or water pipes is not required, significantly reducing labor intensity. The cleaning process for HVAC duct filters is optimized and the degree of automation is improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology for air duct filters in HVAC systems, and more specifically, to a cleaning device for air duct filters in HVAC systems. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) refers to systems or related equipment responsible for heating, ventilation, and air conditioning in indoor or vehicle interiors. The design of HVAC systems applies thermodynamics, fluid mechanics, and fluid machinery, and is an important branch of mechanical engineering. HVAC systems can control the temperature and humidity of the air, improve indoor comfort, and are an important component of medium and large-sized industrial or office buildings.

[0003] Currently, most air duct filters in HVAC systems are cleaned manually. Manual cleaning is labor-intensive, and the cleaning process for air duct filters needs improvement. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a cleaning device for air duct filters in HVAC systems.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A cleaning device for air duct filters used in HVAC systems includes a cleaning box, a cover plate, a telescopic cylinder, a mounting plate, a U-shaped frame, a limiting component, an ultrasonic transducer, a spray assembly, and an overflow pipe.

[0007] The cover is movably installed on the cleaning tank;

[0008] The telescopic cylinder is fixed to the cover plate, and the telescopic cylinder is connected to a mounting plate;

[0009] Several U-shaped frames are fixed on the mounting plate and distributed in a front-to-back manner, and each U-shaped frame is provided with a limit component;

[0010] The ultrasonic transducer is located in the bottom area inside the cleaning tank.

[0011] The spray assembly is installed inside the cleaning tank and is positioned above the cleaning liquid level.

[0012] The overflow pipe connects to the inside of the cleaning tank and is located between the spray assembly and the liquid level of the initial cleaning solution.

[0013] Furthermore, the limiting assembly includes a screw, a handle, and a clamping plate.

[0014] The screw is threadedly connected to the U-shaped frame;

[0015] The handle is connected to the outer end of the screw, and the clamping plate is connected to the inner end of the screw and contacts the frame of the air duct filter.

[0016] Furthermore, the spray assembly includes a channel, a nozzle, a water pump, a T-junction, and a delivery pipe.

[0017] The channels are symmetrically fixed inside the cleaning tank and are higher than the overflow pipe;

[0018] Several nozzles connect to the interior of the channel;

[0019] The water pump is fixed on the cleaning tank and connected to a T-junction pipe;

[0020] The remaining two pipes of the three-way pipe are connected to the delivery pipes respectively, and the two delivery pipes pass through the cleaning box and connect to the two channels respectively.

[0021] Furthermore, the cleaning tank is provided with a transparent observation window, and a sludge pump connected to the bottom of the tank is fixed on the cleaning tank, which is connected to a wastewater pool.

[0022] Furthermore, the cover plate and the cleaning box are respectively fixed with oppositely distributed ear plates, and the ear plates are fitted with fixing bolts.

[0023] Furthermore, the overflow pipe is connected to the wastewater tank.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] Compared to existing technologies, this application can perform dual cleaning of HVAC duct filters (i.e., ultrasonic cleaning combined with spray rinsing), resulting in better cleaning effect. It only requires placing and positioning the duct filter, eliminating the need for manual cleaning with brushes or water pipes, thus significantly reducing the labor intensity of cleaning. The cleaning process for HVAC duct filters is optimized and the degree of automation is improved. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 for Figure 1 Enlarged view of section A (labeled A);

[0028] Figure 3 This is a schematic diagram of a transparent viewing window;

[0029] Figure label:

[0030] 1. Cleaning tank; 2. Cover plate; 3. Telescopic cylinder; 4. Mounting plate; 5. U-shaped frame; 6. Ultrasonic transducer; 7. Overflow pipe; 8. Screw; 9. Handle; 10. Pressure plate; 11. Channel; 12. Nozzle; 13. Water pump; 14. T-pipe; 15. Conveying pipe; 16. Transparent observation window; 17. Sludge pump; 18. Ear plate; 19. Fixing bolts. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0032] like Figure 1 and Figure 2 As shown, a duct filter cleaning device for HVAC systems includes a cleaning box 1, a cover plate 2, a telescopic cylinder 3, a mounting plate 4, a U-shaped frame 5, a limiting component, an ultrasonic transducer 6 (which is existing technology and will not be improved), a spray assembly, and an overflow pipe 7.

[0033] The cover plate 2 is movably installed on the cleaning tank 1 (specifically, the cover plate 2 and the cleaning tank 1 are respectively fixed with oppositely distributed ear plates 18, and the ear plates 18 are fitted with fixing bolts 19).

[0034] The telescopic cylinder 3 is fixed on the cover plate 2, and the telescopic cylinder 3 is connected to the mounting plate 4;

[0035] Several U-shaped frames 5 are fixed on the mounting plate 4 and are distributed in a front-to-back manner, and each U-shaped frame 5 is provided with a limit component;

[0036] The ultrasonic transducer 6 is located in the bottom area inside the cleaning tank 1.

[0037] The spray assembly is installed inside the cleaning tank 1 and is positioned above the cleaning liquid level.

[0038] The overflow pipe 7 is connected to the inside of the cleaning tank 1 and is located between the spray assembly and the liquid level of the initial cleaning solution.

[0039] Specific implementations of this utility model embodiment, such as Figure 1 As shown, the limiting assembly includes a screw 8, a handle 9, and a clamping plate 10.

[0040] Screw 8 is threadedly connected to U-shaped frame 5;

[0041] The handle 9 is connected to the outer end of the screw 8, and the clamping plate 10 is connected to the inner end of the screw 8 and contacts the frame of the air duct filter.

[0042] Specific implementations of this utility model embodiment, such as Figure 1 As shown, the spray assembly includes a channel 11, a nozzle 12, a water pump 13, a three-way pipe 14, and a delivery pipe 15.

[0043] Channel 11 is symmetrically fixed inside the cleaning tank 1 and is higher than the overflow pipe 7;

[0044] Several nozzles 12 connect to the interior of channel 11;

[0045] The water pump 13 is fixed on the cleaning tank 1, and the output end of the water pump 13 is connected to the three-way pipe 14, and the input end of the water pump 13 is connected to the water tank (the water tank is not shown in the figure).

[0046] The remaining two pipes of the three-way pipe 14 are connected to the delivery pipe 15 respectively, and the two delivery pipes 15 pass through the cleaning box 1 and connect to the two channels 11 respectively.

[0047] To monitor the turbidity of the cleaning solution in real time and complete the solution change, further optimizations to the above-described embodiments are possible, such as... Figure 3 As shown, a transparent observation window 16 is provided on the cleaning tank 1, and a sludge pump 17 connected to the bottom of its interior is fixed on the cleaning tank 1. The sludge pump 17 is connected to the wastewater tank, and the overflow pipe 7 is connected to the wastewater tank, which is not shown in the figure.

[0048] It should be noted that the telescopic cylinder 3, ultrasonic transducer 6, water pump 13 and sludge pump 17 are all electrically connected to the controller, which is fixed on the outer wall of the cleaning tank 1 and is not shown in the figure.

[0049] The working process of this utility model is as follows:

[0050] Before the initial cover plate 2 is connected to the cleaning box 1, a certain amount of cleaning fluid is added to the cleaning box 1. After the cleaning fluid is injected, several air duct filters of the same size are placed in several U-shaped frames 5 and clamped by the limiting component. After clamping, the air duct filters are in an upright position. The air duct filters are not shown in the figure.

[0051] After all the duct filters are installed and arranged in a front-to-back pattern, the cover plate 2 is then installed on the cleaning tank 1. Once installed, the controller operates the telescopic cylinder 3, immersing all the duct filters in the cleaning solution. The controller then controls the ultrasonic transducer 6 to perform the first step of cleaning the duct filters. The surfactants in the cleaning solution reduce dirt adhesion, and the cavitation effect accelerates the penetration of the cleaning solution, emulsifying and decomposing contaminants such as grease and dust. After the first step of cleaning is completed, the controller operates the telescopic cylinder 3 again to lift the duct filters off the surface of the cleaning solution. (The upward movement distance can be preset in the controller). After the upward movement is completed, the two channels 11 are on both sides of the air duct filter. Then, the water pump 13 is controlled by the controller to work and water is injected into the two channels 11. Then, the water is sprayed out from the nozzles 12 on both sides to perform double spray cleaning on both sides of the air duct filter. Then, the dirt washed off falls into the cleaning solution. As the spray cleaning process proceeds, the level of the cleaning solution will rise. When it reaches the height of the overflow pipe 7, it can flow directly out of the cleaning tank 1 into the wastewater pool. This can prevent impurities in the cleaning solution from contacting the air duct filter again.

[0052] After ultrasonic cleaning and spray cleaning are completed, the cover plate 2 is removed, and then the air duct filter screens are removed one by one by releasing the limiting position. After drying, the air duct filter screens can be reused.

[0053] When the turbidity of the cleaning fluid is observed to be severe from the outside, the sludge pump 17 is activated by the controller to pump the cleaning fluid into the wastewater tank. Then, a new round of duct filter cleaning can begin by replacing the cleaning fluid.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for air duct filters used in heating, ventilation, and air conditioning systems, characterized in that, It includes a cleaning tank (1), a cover plate (2), a telescopic cylinder (3), a mounting plate (4), a U-shaped frame (5), a limiting component, an ultrasonic transducer (6), a spray assembly, and an overflow pipe (7). The cover plate (2) is movably installed on the cleaning tank (1); The telescopic cylinder (3) is fixed on the cover plate (2), and the telescopic cylinder (3) is connected to the mounting plate (4). Several U-shaped frames (5) are fixed on the mounting plate (4) and distributed in a front-to-back manner, and each U-shaped frame (5) is provided with a limit component; The ultrasonic transducer (6) is located in the bottom area inside the cleaning tank (1); The spray assembly is installed inside the cleaning tank (1) and is positioned above the surface of the cleaning liquid; The overflow pipe (7) is connected to the inside of the cleaning tank (1) and is located between the spray assembly and the liquid surface of the initial cleaning liquid.

2. The air duct filter cleaning device for HVAC according to claim 1, characterized in that, The limiting assembly includes a screw (8), a handle (9), and a clamping plate (10). The screw (8) is threadedly connected to the U-shaped frame (5); The handle (9) is connected to the outer end of the screw (8), and the clamping plate (10) is connected to the inner end of the screw (8) and contacts the frame of the air duct filter.

3. The air duct filter cleaning device for HVAC according to claim 1, characterized in that, The spray assembly includes a channel (11), a nozzle (12), a water pump (13), a three-way pipe (14), and a delivery pipe (15). The channel (11) is symmetrically fixed inside the cleaning tank (1) and is higher than the overflow pipe (7). Several nozzles (12) connect to the interior of channel (11); The water pump (13) is fixed on the cleaning tank (1), and the water pump (13) is connected to the tee pipe (14). The remaining two pipes of the three-way pipe (14) are connected to the delivery pipe (15) respectively, and the two delivery pipes (15) pass through the cleaning box (1) and connect to the two channels (11).

4. The air duct filter cleaning device for HVAC according to claim 1, characterized in that, The cleaning tank (1) is provided with a transparent observation window (16), and a sludge pump (17) connected to the bottom of its interior is fixed on the cleaning tank (1), and the sludge pump (17) is connected to the wastewater pool.

5. A duct filter cleaning device for HVAC systems according to claim 1, characterized in that, The cover plate (2) and the cleaning box (1) are respectively fixed with ear plates (18) that are directly opposite each other, and the ear plates (18) are fitted with fixing bolts (19).

6. A duct filter cleaning device for HVAC according to claim 4, characterized in that, The overflow pipe (7) is connected to the wastewater pool.

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