CN-224231378-U - Device for collecting aerosol in air

CN224231378UCN 224231378 UCN224231378 UCN 224231378UCN-224231378-U

Abstract

The application discloses a device for collecting aerosol in air, which comprises a gas collecting shell, a fan and an electric field assembly. The gas collecting shell comprises a gas inlet and a gas outlet which are arranged at the top of the gas collecting shell, and a release opening which is arranged at the bottom of the gas collecting shell. The fan is arranged in the gas collecting shell, and can guide air to enter the gas collecting shell from the air inlet and flow out of the gas collecting shell from the air outlet, so that the air is induced to generate cyclone motion in the gas collecting shell, and aerosol in the air moves towards the inner side wall of the gas collecting shell and the release opening under the influence of the cyclone motion. The electric field assembly is disposed within the gas-collecting housing and is capable of imparting an electric charge to the aerosol therein as air enters the gas-collecting housing and utilizing the electric field to assist the cyclonic motion to move the charged aerosol more and faster toward the inner sidewall of the gas-collecting housing. The fan in the device is combined with the electric field component to move more and quicker aerosol in the air to the inner side wall of the gas collecting shell of the device, so that the efficient collection of the aerosol in the air is realized.

Inventors

CHI HAIPENG
ZHANG JINGJUN
ZHANG HUAIDONG
XING XIXUE
GONG CHANGHUA

Assignees

北京戴纳极光科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250422

Claims (10)

1. A device for collecting aerosols in air, the device comprising: The gas collecting shell comprises a gas inlet and a gas outlet which are arranged at the top of the gas collecting shell, and a release opening which is arranged at the bottom of the gas collecting shell; The fan is arranged in the gas collecting shell and can guide the air to enter the gas collecting shell from the air inlet and flow out of the gas collecting shell from the air outlet so as to cause the air to generate cyclone motion in the gas collecting shell, and then the aerosol in the air moves towards the inner side wall of the gas collecting shell and the release port under the influence of the cyclone motion; And the electric field component is arranged in the gas collecting shell, can be used for giving electric charge to the aerosol in the gas collecting shell when the air enters the gas collecting shell, and can assist the cyclone motion to move the aerosol with the electric charge to the inner side wall of the gas collecting shell more quickly by utilizing an electric field.
2. The apparatus of claim 1, wherein the electric field assembly comprises a ring electrode concentrically disposed within or outside the gas-collecting housing, and a cylindrical electrode fixedly disposed at a central axis of the gas-collecting housing, wherein the ring electrode is of opposite polarity to the cylindrical electrode.
3. The apparatus of claim 2, wherein the electric field assembly further comprises an electric needle disposed on the air inlet and radially of the gas collecting housing, the electric needle for imparting an electric charge to the aerosol and having the same polarity as the cylindrical electrode.
4. The device according to claim 3, wherein the gas collecting housing comprises a housing having the gas inlet and the release port, a partition provided in the housing and dividing the interior thereof into a collection chamber and a power chamber, a connection hole provided on the partition and communicating a top of the collection chamber with a bottom of the power chamber, a hollow rotating shaft rotatably provided on the top of the housing and penetrating the housing and the partition, the release port communicates with the bottom of the collection chamber, a hollow portion of the hollow rotating shaft is the gas outlet, and the hollow rotating shaft comprises an internal portion in the gas collecting housing and an external portion outside the gas collecting housing; The fan comprises a motor fixedly arranged relative to the gas collecting shell, a driving gear arranged on a rotating shaft of the motor, a driven gear fixedly sleeved on the external part of the hollow rotating shaft and meshed with the driving gear, and an impeller fixedly sleeved on the internal part of the hollow rotating shaft, wherein the impeller can guide air entering from the air inlet to sequentially pass through the power bin, the connecting hole and the collecting bin when rotating, and then generate whirlwind in the collecting bin and then flow out through the air outlet.
5. The device of claim 4, wherein the collection chamber comprises a cylindrical region connected to the connection hole and a conical region connected to the cylindrical region and connected to the release port, the ring electrode is fixedly sleeved outside the collection chamber around the cylindrical region, and the cylindrical electrode is arranged at the center of the cylindrical region.
6. The device of claim 5, wherein the electrical needle is disposed within the cylindrical region and below the connection aperture.
7. The device of claim 5, wherein the connection aperture is adjacent an outer edge of the cylindrical region of the collection bin.
8. The device of claim 4, wherein the cylindrical electrode is attached to the inner wall of the housing by a support rod.
9. The device of claim 4, wherein the hollow shaft has an inner diameter that is greater than an outer diameter of the cylindrical electrode.
10. The device of claim 4, further comprising a valve disposed on the gas collection housing and connected to the release port.

Description

Device for collecting aerosol in air Technical Field Embodiments of the present utility model relate to the field of collection of aerosols in air, and more particularly, to a device for collecting aerosols in air. Background In the fields of current environmental protection monitoring, medical health, air quality control and the like, the collection and analysis of aerosol in air are particularly important. Aerosols are tiny particulate matter suspended in air, both solid and liquid forms, which are typically present in aerosol form and widely distributed in air. Not only does the aerosol contain various contaminants, but it may carry pathogenic microorganisms, such as viruses, bacteria, etc., which pose a threat to human health and environmental safety. Currently, there is a class of cyclonic sampler on the market that uses the inertial centrifugal force of an aerosol during the rotation of an airflow to separate and capture the aerosol. Such cyclone samplers typically create a cyclonic motion of the air sample as it passes through by designing a specific airflow path and rotating structure, and the aerosol, due to its relatively large mass, is subjected to relatively large inertial centrifugal forces during rotation, and is thrown against the path walls and trapped. However, although the cyclone type sampler has a certain trapping effect in theory, in practical application, the collection efficiency of the cyclone type sampler is often low for the object with small size and light weight such as aerosol. Disclosure of utility model In order to solve one or more of the technical problems mentioned above, the present utility model provides a device for collecting aerosols in air, which moves more and faster the aerosols in the air to the inner side wall of the gas collecting shell of the device by a fan in the device in combination with an electric field assembly, thereby realizing efficient collection of aerosols in the air. An embodiment of the present utility model provides a device for collecting aerosol in air, the device comprising: The gas collecting shell comprises a gas inlet and a gas outlet which are arranged at the top of the gas collecting shell, and a release opening which is arranged at the bottom of the gas collecting shell; The fan is arranged in the gas collecting shell and can guide the air to enter the gas collecting shell from the air inlet and flow out of the gas collecting shell from the air outlet so as to cause the air to generate cyclone motion in the gas collecting shell, and then the aerosol in the air moves towards the inner side wall of the gas collecting shell and the release port under the influence of the cyclone motion; And the electric field component is arranged in the gas collecting shell, can be used for giving electric charge to the aerosol in the gas collecting shell when the air enters the gas collecting shell, and can assist the cyclone motion to move the aerosol with the electric charge to the inner side wall of the gas collecting shell more quickly by utilizing an electric field. Further, the electric field assembly comprises an annular electrode concentrically arranged inside or outside the gas collecting shell and a cylindrical electrode fixedly arranged at the central axis of the gas collecting shell, wherein the polarity of the annular electrode is opposite to that of the cylindrical electrode. Further, the electric field assembly further comprises an electric needle which is arranged on the air inlet and is arranged along the radial direction of the gas collecting shell, and the electric needle is used for giving charges to the aerosol and has the same polarity as the cylindrical electrode. Further, the gas collecting shell comprises a shell with the gas inlet and the release port, a partition arranged in the shell and dividing the interior of the shell into a collecting bin and a power bin, a connecting hole arranged on the partition and used for communicating the top of the collecting bin with the bottom of the power bin, and a hollow rotating shaft rotatably arranged on the top of the shell and penetrating through the shell and the partition, wherein the release port is communicated with the bottom of the collecting bin, the hollow part of the hollow rotating shaft is the gas outlet, and the hollow rotating shaft comprises an internal part in the gas collecting shell and an external part outside the gas collecting shell; The fan comprises a motor fixedly arranged relative to the gas collecting shell, a driving gear arranged on a rotating shaft of the motor, a driven gear fixedly sleeved on the external part of the hollow rotating shaft and meshed with the driving gear, and an impeller fixedly sleeved on the internal part of the hollow rotating shaft, wherein the impeller can guide air entering from the air inlet to sequentially pass through the power bin, the connecting hole and the collecting bin when rotating, and then generate whirlwind in the collectin