Cleaning device for air inlet of air return pipeline

Abstract

A cleaning device for an air inlet of an air return pipeline comprises a device body, the device body comprises adjustable fan blades, a filter screen and an air direction guide plate, a communicated cavity is formed between the adjustable fan blades and the filter screen, an electric telescopic plate is arranged between the filter screen and the air direction guide plate, an air blowing assembly is arranged above the cavity, and an air exhaust assembly is arranged below the cavity. The air blowing assembly comprises an air blowing fan for blowing air into the cavity and an air blowing pipeline communicated with the cavity, the air blowing pipeline is communicated with the air blowing fan, the air extraction assembly comprises an air extraction fan for extracting impurity gas in the cavity and an air extraction pipeline communicated with the cavity, and the air extraction pipeline is communicated with the air extraction fan. The air blowing assembly and the air exhaust assembly are arranged on the cavity between the adjustable fan blades and the filter screen, the air blowing assembly blows up dust and impurities on the filter screen, and then the dust and impurities are exhausted through the air exhaust assembly, so that the purpose of cleaning the filter screen is achieved, the filter screen does not need to be manually replaced, use is convenient, and the service life of the filter screen is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of return air ducts, specifically a return air duct inlet cleaning device. Background Technology

[0002] The main function of return air ducts is to recycle and filter indoor air, maintain air circulation, and ensure that treated air is returned to the room to improve indoor air freshness and comfort. It helps save energy, reduces dependence on the external environment, maintains uniform indoor temperature, and improves air quality through the filtration system. However, return air ducts present some difficult problems in practical use: The air inlet of the return air duct is usually equipped with a filter to remove impurities and dust from the air. Therefore, the filter needs to be replaced after a period of use to maintain air quality. However, some air inlets are installed in high or dangerous locations, making it inconvenient to replace the filter in a timely manner. Furthermore, replacing the filter requires disassembly, which is troublesome and shortens the filter's lifespan. Therefore, a device that allows for filter cleaning without frequent disassembly is needed. Utility Model Content

[0003] In view of the above, this utility model provides a return air duct inlet cleaning device to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a return air duct inlet cleaning device, including a device body, which is installed at the return air duct inlet. The device body includes an adjustable fan blade, a filter screen, and an air guide plate. The adjustable fan blade, filter screen, and air guide plate are arranged sequentially from the outside to the inside. A cavity is provided between the adjustable fan blade and the filter screen. A retractable electric telescopic plate is provided between the filter screen and the air guide plate. An air blowing component for cleaning the filter screen is provided above the cavity, and an air extraction component for removing impurities and dust is provided below the cavity. The air blowing component includes an air blower for blowing air into the cavity and an air blowing pipe connected to the cavity. The air blowing pipe is connected to the air blower. The air extraction component includes an air extraction fan for extracting gas containing impurities from inside the cavity and an air extraction pipe connected to the cavity. The air extraction pipe is connected to the air extraction fan. In use, the adjustable fan blade and the electric telescopic plate are closed. The air blowing component blows air into the cavity to blow up the impurities and dust on the filter screen, and the air extraction component extracts the gas containing impurities and dust.

[0005] Furthermore, a collection box for collecting dust and impurities is provided at the outlet of the exhaust pipe. The collection box has an air outlet, and a filter screen is movably installed at the air outlet. The impurities and dust on the filter screen are drawn into the collection box by the exhaust fan. The filter screen in the collection box can be manually replaced after a period of use.

[0006] Furthermore, the main body of the device also includes a switch, which contains a microcontroller. The output end of the switch is connected to the input end of the microcontroller. The microcontroller is electrically connected to the adjustable fan blade, the electric telescopic plate, the air blowing assembly, and the air extraction assembly, respectively. The main body of the device is operated through the microcontroller inside the switch.

[0007] Furthermore, the main body of the device is provided with a power cord for connecting to an external power source. The power cord is electrically connected to a switch, and the external power source is connected to the power cord to provide power to the main body of the device.

[0008] Furthermore, the adjustable fan blades, filter screen, and air guide plate are equipped with rubber gaskets to prevent air leakage around the adjustable fan blades, filter screen, and air guide plate.

[0009] The beneficial effects of this utility model are: the cavity between the adjustable fan blade and the filter screen is equipped with an air blowing component and an air extraction component. The air blowing component blows up the dust and impurities on the filter screen, and then the air extraction component removes them, thereby achieving the purpose of cleaning the filter screen, avoiding the problem of frequent replacement and cleaning of the filter screen, making it more convenient to use, and extending the service life of the filter screen. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a front view schematic diagram of the main body of the device of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of the electric telescopic plate of this utility model when it is unfolded and retracted.

[0013] exist Figures 1-3 The components are as follows: 1. Main body of the device; 2. Adjustable fan blades; 3. Filter screen; 4. Air guide plate; 5. Electric telescopic plate; 6. Air blower; 7. Air blowing pipe; 8. Air extraction fan; 9. Air extraction pipe; 10. Collection box; 11. Air outlet; 12. Switch; 13. Microcontroller; 14. Power cord; 15. Return air duct; 16. Cavity. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and some embodiments.

[0015] exist Figures 1-3A return air duct inlet cleaning device includes a main body 1, which is installed at the air inlet of the return air duct 15. The main body 1 includes adjustable fan blades 2, a filter screen 3, and an air guide plate 4. The adjustable fan blades 2 are common electric louvers, such as the M1 / V1 basic electric louvers, whose structure mainly includes a motor, a rope winder, and slats, and can be opened or closed according to actual conditions. The adjustable fan blades 2, the filter screen 3, and the air guide plate 4 are arranged sequentially from the outside to the inside. A cavity 16 is provided between the adjustable fan blades 2 and the filter screen 3. A retractable electric telescopic plate 5 is provided between the filter screen 3 and the air guide plate 4. The electric telescopic plate 5 is a common electric telescopic device, such as the L6 / L7 / L8 / L9 electric pedal, whose main structure includes a telescopic door and a motor. The electric telescopic plate 5 retracts when air intake is needed and extends when cleaning the filter screen 3 is needed. A cleaning filter screen 3 cleaning device is provided above the cavity 16. The air blowing assembly includes an air extraction assembly located below the cavity 16 to remove impurities and dust. The air blowing assembly includes an air blower 6 that blows air into the cavity 16 and an air blowing pipe 7 connected to the cavity 16. The air blowing pipe 7 is connected to the air blower 6. The air extraction assembly includes an air extraction fan 8 that extracts gas containing impurities from inside the cavity 16 and an air extraction pipe 9 connected to the cavity 16. The air extraction pipe 9 is connected to the air extraction fan 8. When cleaning the filter screen 3, the adjustable fan blade 2 and the electric telescopic plate 5 are closed via switch 12, placing the filter screen 3 in a sealed space to prevent the cleaned dust from entering the return air duct 15. Then, the air blower 6 is turned on, blowing air through the air blowing pipe 7 to remove dust and impurities from the filter screen 3. The air extraction fan 8 is turned on, extracting the gas containing impurities and dust through the air extraction pipe 9. In use, the adjustable fan blade 2 and the electric telescopic plate 5 are closed. The air blowing assembly blows air into the cavity to lift the impurities and dust from the filter screen 3, and the air extraction assembly extracts the gas containing impurities and dust.

[0016] In this embodiment, a collection box 10 for collecting dust and impurities is provided at the outlet of the exhaust pipe 9. An air outlet 11 is provided on the collection box 10, and a filter screen is movably installed at the air outlet 11. The impurities and dust on the filter screen 3 are drawn into the collection box 10 by the exhaust fan 8. The filter screen in the collection box 10 can be manually replaced after a period of use.

[0017] In this embodiment, the main body 1 of the device also includes a switch 12, and a microcontroller 13 is provided inside the switch 12. The output end of the switch 12 is connected to the input end of the microcontroller 13. The microcontroller 13 is electrically connected to the adjustable fan blade 2, the electric telescopic plate 5, the air blowing assembly, and the air extraction assembly. The microcontroller 13 is also electrically connected to the adjustable fan blade 2, the air blowing fan 6, the air extraction fan 8, and the electric telescopic plate 5. The main body 1 of the device is operated through the microcontroller 13 inside the switch 12, and the microcontroller 13 receives and transmits signals.

[0018] In this embodiment, the main body 1 of the device is provided with a power cord 14 for connecting to an external power source. The power cord 14 is electrically connected to the switch 12, and the external power source is connected through the power cord 14 to provide power to the main body 1 of the device.

[0019] In this embodiment, the adjustable fan blade 2, filter screen 3, and air guide plate 4 are provided with rubber gaskets on their exterior. The rubber gaskets can be attached to the exterior of the adjustable fan blade 2, filter screen 3, and air guide plate 4 by means of adhesives or other methods to prevent air leakage around the adjustable fan blade 2, filter screen 3, and air guide plate 4.

[0020] In this embodiment, the microcontroller 13 is a common electrical component, such as the AT89C2051 or TMS320VC5509A model microcontroller 13.

[0021] In this embodiment, the blowing fan 6 and the exhaust fan 8 are common fans, such as 4-72 centrifugal fans, B4-72 series centrifugal fans, etc.

[0022] In this embodiment, the control circuit of this utility model is a common circuit in the field of circuits. The device of this utility model can be connected to an external power source or a built-in battery through a power cord to provide power to the device. Those skilled in the art can implement it, so it will not be described in detail here.

[0023] In practical implementation, this utility model is used as follows: When in use, the external power supply is connected via the power cord 14. When the filter screen 3 needs to be cleaned, the adjustable fan blade 2 and the electric telescopic plate 5 are closed via the switch 12, so that the filter screen 3 is in a sealed space to prevent the dust from entering the return air duct 15. Then, the blower 6 is turned on, and the dust and impurities on the filter screen 3 are blown out through the blower pipe 7. The exhaust fan 8 is turned on, and the gas containing impurities and dust is drawn into the collection box 10 through the exhaust pipe 9. Finally, the adjustable fan blade 2 and the electric telescopic plate 5 are turned on.

[0024] It is worth noting that in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] It will be apparent to those skilled in the art that this utility model patent is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model patent. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model patent is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be encompassed within this utility model patent. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A return air duct inlet cleaning device, comprising a device body installed at the return air duct inlet, the device body including adjustable fan blades, a filter screen, and an air guide plate, characterized in that: The adjustable fan blades, filter screen, and air guide plate are arranged sequentially from the outside to the inside. A cavity is connected between the adjustable fan blades and the filter screen, and a retractable electric telescopic plate is provided between the filter screen and the air guide plate. An air blowing assembly for cleaning the filter screen is provided above the cavity, and an air extraction assembly for removing impurities and dust is provided below the cavity. The air blowing assembly includes an air blower that blows air into the cavity and an air blowing pipe connected to the cavity. The air blowing pipe is connected to the air blower. The air extraction assembly includes an air extraction fan that extracts gas containing impurities from inside the cavity and an air extraction pipe connected to the cavity. The air extraction pipe is connected to the air extraction fan. In use, the adjustable fan blades and electric telescopic plate are closed. The air blowing assembly blows air into the cavity to blow up the impurities and dust on the filter screen, and the air extraction assembly extracts the gas containing impurities and dust.

2. The air inlet cleaning device for a return air duct according to claim 1, characterized in that: The exhaust pipe outlet is equipped with a collection box for collecting dust and impurities, and the collection box has an air outlet with a filter screen movably installed at the air outlet.

3. The air inlet cleaning device for a return air duct according to claim 1, characterized in that: The main body of the device also includes a switch, which contains a microcontroller. The output end of the switch is connected to the input end of the microcontroller, and the microcontroller is electrically connected to the adjustable fan blade, the electric telescopic plate, the air blowing assembly, and the air extraction assembly.

4. The air inlet cleaning device for a return air duct according to claim 1, characterized in that: The main body of the device is equipped with a power cord that connects to an external power source, and the power cord is electrically connected to a switch.

5. The air inlet cleaning device for a return air duct according to claim 1, characterized in that: The adjustable fan blades, filter screen, and air guide plate are equipped with rubber gaskets on their exteriors.

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