Efficient air filter with automatic cleaning function

By introducing components such as high-efficiency air filter elements, steam tanks, and resistance heating tubes into the air filter, automatic cleaning and high-temperature steam sterilization are achieved, solving the problem of insufficient cleaning and sterilization of air filters in existing technologies and improving the practicality of air filters.

CN224207617UActive Publication Date: 2026-05-08NANJING NENGAI PURIFICATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING NENGAI PURIFICATION TECH CO LTD
Filing Date
2025-04-11
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing air filters are inadequate in terms of automatic cleaning and high-temperature steam sterilization, and their practicality needs to be improved.

Method used

A high-efficiency air filter with automatic cleaning function was designed. Through the combination of high-efficiency air filter element, steam tank, resistance heating tube and air guide tube, automatic cleaning and high-temperature steam sterilization operation are achieved.

Benefits of technology

It enables automatic cleaning and high-temperature steam sterilization of air filters, ensuring that the filters maintain high-efficiency filtration performance over a long period of time and improving the practicality of air filters.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a high-efficiency air filter with an automatic cleaning function, relates to the technical field of air filters, and aims to solve the problems that an existing air filter is insufficient in automatic cleaning and high-temperature steam sterilization, and the practicability needs to be improved. An efficient air filter element is mounted in the filter box, a steam tank is fixedly connected to the lower surface of the filter box, a first resistance heating pipe is fixedly mounted on the bottom end face in the steam tank, the upper end of the steam tank is communicated with the downstream of airflow of the efficient air filter element, and a mounting hole is formed in the side surface of the filter box. A water inlet pipe is fixedly mounted in the mounting hole, the water outlet end of the water inlet pipe is arranged in the steam tank, and an end cover is mounted at the water inlet end of the water inlet pipe. And the effects that the internal filtering structure can be automatically cleaned, meanwhile, high-temperature steam disinfection operation can be conducted, and practicability is high are achieved.
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Description

Technical Field

[0001] This utility model relates to the field of air filter technology, and in particular to a high-efficiency air filter with an automatic cleaning function. Background Technology

[0002] Air filters are ubiquitous in daily life. In the comfort of a home, they act like a silent air-purifying spirit, creating a fresh and healthy haven for family members. For allergy sufferers, every breath brings peace of mind; children and the elderly, with their weaker immune systems, can also live comfortably under their protection. In the workplace, they function as a caring comfort manager, dispelling stuffiness and pollution, allowing employees to think more clearly and boosting work efficiency. And in hospitals and laboratories—places with stringent air quality requirements—they shoulder a crucial responsibility, acting as loyal guardian knights, protecting medical treatment and scientific research, ensuring that every step is free from pollution. With their superior purification capabilities, air filters have become a powerful assistant in improving air quality and protecting people's health.

[0003] Existing air filters are inadequate in automatic cleaning and high-temperature steam sterilization, and their practicality needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency air filter with an automatic cleaning function that can automatically clean the internal filter structure and perform high-temperature steam sterilization, making it highly practical.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-efficiency air filter with an automatic cleaning function includes a filter box, inside which a high-efficiency air filter element is installed. A steam tank is fixedly connected to the lower surface of the filter box. A first resistance heating tube is fixedly installed on the bottom surface inside the steam tank. The upper end of the steam tank is connected to the downstream airflow of the high-efficiency air filter element. An installation hole is provided on the side surface of the filter box, and a water inlet pipe is fixedly installed inside the installation hole. The water outlet end of the water inlet pipe is placed inside the steam tank, and an end cap is installed on the water inlet end of the water inlet pipe.

[0007] By adopting the above technical solution, high-temperature steam sterilization can be performed during automatic cleaning operations.

[0008] Furthermore, a first air guide pipe is fixedly connected to the upper surface of the filter box, and a dust discharge fan is fixedly installed at the upper end of the first air guide pipe.

[0009] By adopting the above technical solution, reverse ash removal operation can be performed.

[0010] Furthermore, a second resistance heating tube is fixedly installed at the upper end of the first air guide tube, the air outlet of the first air guide tube is connected to the downstream airflow of the high-efficiency air filter element, a second air guide tube is fixedly connected to the lower surface of the filter box, and solenoid valves are installed in the pipelines of the second air guide tube and the first air guide tube.

[0011] By adopting the above technical solution, high-temperature heating operation can be performed on the reverse ash discharge airflow.

[0012] Furthermore, an air inlet pipe and an exhaust pipe are respectively installed at both ends of the filter box, and a solenoid valve is installed in both the air inlet pipe and the exhaust pipe.

[0013] By adopting the above technical solution, it can be ensured that the air to be filtered passes through the interior of the filter box in an orderly manner.

[0014] Furthermore, an intake fan is fixedly installed at one end of the exhaust pipe.

[0015] By adopting the above technical solution, it is ensured that the air to be filtered can effectively pass through the interior of the filter box.

[0016] Furthermore, a flexible air guide tube is fixedly installed at the outlet end of the second air guide tube.

[0017] By adopting the above technical solution, the exhaust gas generated during cleaning can be effectively discharged to a designated location.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] 1. This utility model allows the air to be processed to pass through the interior of the filter box during operation. During this process, the air is filtered using a high-efficiency air filter element. After a period of filtration, the solenoid valves on the inlet and outlet pipes are closed. Then, water is added to the steam tank through the water inlet pipe. Next, the first resistance heating tube is activated to heat the water inside the steam tank, converting the water inside the steam tank into high-temperature steam. The high-temperature steam then passes through the high-efficiency air filter element in reverse. This allows the high-temperature steam to perform high-temperature disinfection on the high-efficiency air filter element, enabling the exhaust gas to be discharged to the designated area through the second air guide pipe. This process enables automatic cleaning.

[0020] 2. This utility model allows for the initial dust removal process when cleaning the high-efficiency air filter. The rotating dust removal fan draws clean indoor air through the first air duct into the filter chamber, then through the high-efficiency air filter in reverse, performing initial dust removal and achieving the first stage of automatic cleaning. Following disinfection, the second resistance heating element is activated to increase the temperature of the air entering the filter chamber. This high-temperature air then passes through the high-efficiency air filter in reverse, performing a second high-temperature disinfection operation and simultaneously drying the filter. This ensures the high-efficiency air filter remains dry, thereby improving its filtration efficiency and ensuring the air filter maintains its high-efficiency filtration performance over a long period. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a diagram of the internal structure of this utility model.

[0023] In the diagram: 1. Filter box; 2. Inlet pipe; 3. Exhaust pipe; 4. Solenoid valve; 5. Suction fan; 6. First air guide pipe; 7. Ash exhaust fan; 8. Steam tank; 9. Second air guide pipe; 10. Air guide hose; 11. Water inlet pipe; 12. High-efficiency air filter; 13. First resistance heating tube; 14. Second resistance heating tube. Detailed Implementation

[0024] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 , Figure 2A high-efficiency air filter with an automatic cleaning function includes a filter box 1, inside which a high-efficiency air filter element 12 is installed. A steam tank 8 is fixedly connected to the lower surface of the filter box 1. A first resistance heating tube 13 is fixedly installed on the bottom surface inside the steam tank 8. The upper end of the steam tank 8 is connected to the downstream airflow of the high-efficiency air filter element 12. A mounting hole is provided on the side surface of the filter box 1, and a water inlet pipe 11 is fixedly installed inside the mounting hole. The water outlet end of the water inlet pipe 11 is placed inside the steam tank 8. An end cap is installed on the water inlet end of the water inlet pipe 11. During operation, the air to be treated can pass through the interior of the filter box 1. The system uses a high-efficiency air filter element 12 to filter the air. After a period of filtration, the solenoid valves 4 on the air inlet pipe 2 and the exhaust pipe 3 are closed. Then, water is added to the steam tank 8 through the water inlet pipe 11. Next, the first resistance heating tube 13 is activated to heat the water inside the steam tank 8, causing the water inside the steam tank 8 to be converted into high-temperature steam. Then, the high-temperature steam passes through the high-efficiency air filter element 12 in reverse. This allows the high-temperature steam to disinfect the high-efficiency air filter element 12, so that the exhaust gas can be discharged to the designated area through the second air guide pipe 9. This process enables automatic cleaning.

[0026] Reference Figure 1 , Figure 2 A first air duct 6 is fixedly connected to the upper surface of the filter box 1. A dust exhaust fan 7 is fixedly installed at the upper end of the first air duct 6. A second resistance heating tube 14 is fixedly installed inside the upper end of the first air duct 6. The air outlet of the first air duct 6 is connected to the downstream airflow of the high-efficiency air filter element 12. A second air duct 9 is fixedly connected to the lower surface of the filter box 1. Solenoid valves 4 are installed in both the second air duct 9 and the first air duct 6. A flexible air duct 10 is fixedly installed at the air outlet of the second air duct 9. When cleaning the high-efficiency air filter element 12, the dust exhaust fan 7 can be started first. At this time, the rotating dust exhaust fan 7 makes the room cleaner. Air enters the interior of the filter box 1 through the first air guide pipe 6, and then passes through the high-efficiency air filter element 12 in reverse. At this time, a preliminary dust desorption operation can be performed, realizing the first automatic cleaning operation. Then, after disinfection, the second resistance heating tube 14 is activated, which can increase the temperature of the air entering the filter box 1. When the high-temperature air passes through the high-efficiency air filter element 12 in reverse, a second high-temperature disinfection operation can be performed. At the same time, the high-efficiency air filter element 12 can be dried to ensure that the high-efficiency air filter element 12 remains dry, thereby improving the filtration efficiency of the high-efficiency air filter element 12 and ensuring that the air filter can maintain high-efficiency filtration performance for a long time.

[0027] Reference Figure 1 , Figure 2The filter box 1 is equipped with an air inlet pipe 2 and an exhaust pipe 3 at its two ends. Solenoid valves 4 are installed in both the air inlet pipe 2 and the exhaust pipe 3. An air intake fan 5 is fixedly installed at one end of the exhaust pipe 3. The rotation of the air intake fan 5 can be used to make the outside air enter the interior of the filter box 1 through the air inlet pipe 2, and then be filtered by the high-efficiency air filter element 12 before being discharged from the exhaust pipe 3.

[0028] Working Principle: In use, first install the air filter in the designated location. Then, air filtration can begin. The intake fan 5 rotates to draw outside air into the filter box 1 through the intake pipe 2. After passing through the high-efficiency air filter element 12, the air is discharged from the exhaust pipe 3. After a period of filtration, the high-efficiency air filter element 12 needs to be cleaned. To clean the high-efficiency air filter element 12, first close the solenoid valves 4 on the intake pipe 2 and exhaust pipe 3, then start the dust removal fan 7. The rotating dust removal fan 7 draws clean indoor air into the filter box 1 through the first air guide pipe 6, then through the high-efficiency air filter element 12 in reverse. This allows for preliminary dust removal. The resulting exhaust gas is discharged from the second air guide pipe 9 and the air guide hose 10, and then through the water inlet pipe 11 into the steam tank 8. Water is added to the steam tank 8, and then the first resistance heating tube 13 is activated to heat the water inside the steam tank 8, converting the water into high-temperature steam. The high-temperature steam then passes through the high-efficiency air filter 12 in reverse, which allows the high-temperature steam to disinfect the high-efficiency air filter 12, enabling the exhaust gas to be discharged to the designated area through the second air guide pipe 9. After disinfection, the second resistance heating tube 14 is activated to increase the temperature of the air entering the filter box 1. When the high-temperature air passes through the high-efficiency air filter 12 in reverse, a second high-temperature disinfection operation is performed, and the high-efficiency air filter 12 is dried at the same time, ensuring that the high-efficiency air filter 12 remains dry, thereby improving the filtration efficiency of the high-efficiency air filter 12 and ensuring that the air filter can maintain its high-efficiency filtration performance for a long time.

[0029] The specific real-time examples described herein are preferred real-time examples of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-efficiency air filter with an automatic cleaning function, comprising a filter housing (1), characterized in that: The filter box (1) is equipped with a high-efficiency air filter element (12). A steam tank (8) is fixedly connected to the lower surface of the filter box (1). A first resistance heating tube (13) is fixedly installed on the bottom surface of the steam tank (8). The upper end of the steam tank (8) is connected to the downstream airflow of the high-efficiency air filter element (12). An installation hole is provided on the side surface of the filter box (1), and a water inlet pipe (11) is fixedly installed inside the installation hole. The water outlet end of the water inlet pipe (11) is placed inside the steam tank (8), and an end cap is installed on the water inlet end of the water inlet pipe (11).

2. The high-efficiency air filter with automatic cleaning function according to claim 1, characterized in that: A first air guide pipe (6) is fixedly connected to the upper surface of the filter box (1), and a dust discharge fan (7) is fixedly installed at the upper end of the first air guide pipe (6).

3. A high-efficiency air filter with automatic cleaning function according to claim 2, characterized in that: The upper end of the first air guide pipe (6) is fixedly installed with a second resistance heating tube (14). The air outlet of the first air guide pipe (6) is connected to the downstream airflow of the high-efficiency air filter element (12). The lower surface of the filter box (1) is fixedly connected with a second air guide pipe (9). Solenoid valves (4) are installed in both the second air guide pipe (9) and the first air guide pipe (6).

4. A high-efficiency air filter with automatic cleaning function according to claim 3, characterized in that: The filter box (1) is equipped with an air inlet pipe (2) and an exhaust pipe (3) at both ends, and a solenoid valve (4) is installed in both the air inlet pipe (2) and the exhaust pipe (3).

5. A high-efficiency air filter with automatic cleaning function according to claim 4, characterized in that: An air intake fan (5) is fixedly installed at one end of the exhaust pipe (3).

6. A high-efficiency air filter with automatic cleaning function according to claim 3, characterized in that: The outlet end of the second air duct (9) is fixedly equipped with an air duct hose (10).