室内空气净化系统
By installing wind speed detection devices and negative ion generators inside ventilation ducts, and using metal plates and metal needles to generate negative ions, the problem of limited air circulation and purification effect in ventilation ducts is solved, achieving efficient air purification and energy saving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN VANKE BUILDING TECHN RES
- Filing Date
- 2025-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
Adding filters to ventilation ducts reduces airflow and limits purification effectiveness.
A wind speed detection device and a negative ion generator are installed inside the ventilation duct. Negative ions are generated using metal plates and metal needles. The voltage is adjusted according to the wind speed through a high-voltage power supply to release negative ions, which, combined with a dust collection plate, achieves air purification.
While ensuring air purification effectiveness, it reduces power consumption and improves air circulation and purification efficiency.
Smart Images
Figure CN224516967U_ABST
Abstract
Claims
1. An indoor air purification system comprising a ventilation duct for ventilating a building interior, characterized in that The indoor air purification system also includes a wind speed detection device and a negative ion generator. The negative ion generator includes a high-voltage power supply, a metal plate, and multiple conical metal needles. The metal plate and the wind speed detection device are respectively installed inside the ventilation duct, with the metal plate perpendicular to the airflow direction within the ventilation duct and insulated from it. The metal plate has multiple ventilation holes, and the multiple metal needles are respectively vertically connected to the windward side surface of the metal plate, avoiding the ventilation holes. The high-voltage power supply includes a control signal input terminal and a high-voltage output terminal. The high-voltage output terminal of the high-voltage power supply is electrically connected to the metal plate, and the multiple metal needles are respectively electrically connected to the metal plate. The control signal input terminal of the high-voltage power supply is electrically connected to the output terminal of the wind speed detection device, and the voltage of the high-voltage output terminal is adjusted according to the signal from the control signal input terminal.
2. The indoor air purification system of claim 1, wherein, The ventilation duct is made of metal, and the shape and size of the metal plate are adapted to the radial shape and size of the ventilation duct.
3. The indoor air purification system of claim 2, wherein, The edge of the metal plate is wrapped with an insulating collar, and the ventilation duct has an inspection port adjacent to the metal plate.
4. The indoor air purification system of claim 2, wherein, The ventilation duct includes a first connecting section and a second connecting section connected axially. The inner wall of the end of the first connecting section has a first insulating retaining ring, and the interior of the end of the second connecting section has a second insulating retaining ring. The first insulating retaining ring and the second insulating retaining ring are spliced together to form an annular mounting groove. The metal plate is installed in the ventilation duct by embedding its edge into the annular mounting groove.
5. The indoor air purification system of claim 1, wherein, The detection head of the wind speed detection device is located on the windward side of the metal plate, and the distance between the detection head and the metal plate is not less than 0.5m.
6. The indoor air purification system of claim 1, wherein, The ventilation holes are composed of circular holes with a diameter of 40-50 mm, and the spacing between adjacent ventilation holes is 10 mm; the length of the metal needle is 15 mm, and the radius of curvature of the end of the metal needle is less than or equal to 0.1 mm.
7. The indoor air purification system of claim 1, wherein, The high-voltage power supply includes a low-voltage output terminal, and a dust collection plate is installed inside the ventilation duct, and the dust collection plate is electrically connected to the low-voltage output terminal of the high-voltage power supply.
8. The indoor air purification system of claim 7, wherein, The dust collection plate is attached to the inner wall of the ventilation duct and is located on the leeward side of the metal plate; the ventilation duct has a maintenance port corresponding to the position of the dust collection plate.
9. The indoor air purification system of claim 1, wherein, Both the cross-section of the ventilation duct and the metal plate are rectangular.
10. The indoor air purification system of claim 1, wherein, The ventilation duct is the air supply duct of a central air conditioning system, and the metal plate is adjacent to the air outlet of the indoor unit of the central air conditioning system; or, the ventilation duct is the air supply duct of a central ventilation system, and the metal plate is adjacent to the air outlet of the fan in the central ventilation system.