Automatic source-seeking indoor pollution purifying and removing device and method

Patent metadata

Field	Value
Publication number	US-11324847-B2
Application number	US-201817051116-A
Country	US
Kind code	B2
Filing date	May 28, 2018
Priority date	May 7, 2018
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

The present invention discloses an automatic source-seeking indoor pollution purifying and removing device and method for airborne pollutants. The device comprises pollutant concentration sensors, a control unit, a position sensor, a power plant, a moving mechanism, a telescopic device, a pollutant collection hood, and a filtering and purifying device. The control unit can identify the actual release positions and hourly release rates of relevant pollutants according to the concentration data monitored by the pollutant concentration sensors, and can control the pollutant collection hood in the device to move to a designated position in a space, so as to realize the collection and removal of pollutants at the release position of the pollutants.

First claim

The invention claimed is:

1. An automatic source-seeking indoor pollution purifying and removing device, comprising pollutant concentration sensors, a control unit, a position sensor, a power plant, a moving mechanism, a telescopic device, a pollutant collection hood, and a filtering and purifying device; the pollutant concentration sensors are used to monitor indoor pollutant concentration and transfer data to the control unit; the control unit is used to identify actual pollution source information of relevant pollutants according to concentration data monitored by the pollutant concentration sensors, and issue a movement instruction to the power plant according to a current position signal sent by the position sensor in the device; the actual pollution source information includes the release positions of pollutants; the power plant is used to move the pollutant collection hood to the positions of identified pollution sources by controlling the moving mechanism and the telescopic device; the pollutants collected by the pollutant collection hood are sucked into the filtering and purifying device through a fan for removal; and the inside of the power plant is provided with power supply equipment to supply power for the moving mechanism, the telescopic device and the fan.

2. The automatic source-seeking indoor pollution purifying and removing device of claim 1 , wherein the control unit identifies the actual pollution source information of relevant pollutants according to positions of potential pollution sources of relevant pollutants in combination with the concentration data monitored by the pollutant concentration sensors; the control unit also continues to dynamically update the pollution source information according to the concentration data monitored by the pollutant concentration sensors in the process of device movement or pollutant removal, until the pollutant concentrations at the positions of all pollution sources are lower than corresponding pollutant concentration alarm values; and the actual pollution source information also includes the hourly release rates of pollution sources.

3. The automatic source-seeking indoor pollution purifying and removing device of claim 1 , wherein after identifying pollution sources, the control unit arranges a movement track of the device according to pre-input indoor geometric layout information; a front part of the moving mechanism is provided with an obstacle monitoring sensor which returns a signal to the control unit to correct the movement track when an obstacle is encountered; and the control unit also internally has an automatic return function which enables the device to return to an original position after all pollution sources are removed.

4. The automatic source-seeking indoor pollution purifying and removing device of claim 3 , wherein the movement track of the device arranged according to the pre-input indoor geometric layout information is that: when all pollution sources release same kind of pollutants, the control unit arranges the track according to an hourly release rate of each pollution source from higher to lower, and then issues a movement instruction to the power plant; when multiple kinds of pollutants are released from each pollution source, the control unit sorts according to a distance between each pollution source and the device, selects a shortest track that includes all pollution sources, and then issues an instruction to the power plant.

5. The automatic source-seeking indoor pollution purifying and removing device of claim 1 , wherein the pollutant concentration sensors comprise a VOC sensor, a microbial sensor and a particulate sensor to monitor the concentrations of indoor pollutants in real time.

6. The automatic source-seeking indoor pollution purifying and removing device of claim 1 , wherein the inside of the control unit is provided with a module for controlling the start and stop of the fan; when the pollutant collection hood moves to a release position where a pollution source is located, the fan starts running; and when the concentrations monitored by all the pollutant concentration sensors are lower than a corresponding pollutant concentration alarm values, the fan stops running.

7. The automatic source-seeking indoor pollution purifying and removing device of claim 1 , wherein the moving mechanism is connected with the power supply equipment in the power plant, and receives the movement instruction issued by the power plant.

8. The automatic source-seeking indoor pollution purifying and removing device of claim 1 , wherein the telescopic device comprises a fixed base, gimbals and a multi-section arm; the telescopic device is fixed in the device through the fixed base; the pollutant collection hood is connected with the multi-section arm through the gimbals, the multi-section arm closest to the pollutant collection hood is a telescopic sleeve pipe, and a length of the multi-section arm can be adjusted to change the position of the pollutant collection hood; and each gimbal is connected with the power supply equipment in the power plant, and receives the movement instruction issued by the power plant.

9. The automatic source-seeking indoor pollution purifying and removing device of claim 1 , wherein the inside of the filtering and purifying device is sequentially provided with a primary filter screen, a high-efficiency filter screen, ultraviolet lamps, activated carbon and an air outlet, so as to purify multiple kinds of pollutants and discharge the purified air through the air outlet.

10. A pollution source identifying method of the automatic source-seeking indoor pollution purifying and removing device of claim 1 , comprising the following identifying process:
(1) pre-inputting indoor geometric layout information and position information of potential pollution sources indoors to the control unit;
(2) arranging n-1 sensors that monitor the concentrations of a same kind of pollutants at any different positions in a room according to a number n (n≥1) of potential pollution sources for various kinds of pollutants, and returning a real-time concentration data monitored by each sensor and sensor installation positions to the control unit; and
(3) obtaining an indoor flow field through numerical simulation by solving Navier-Stokes equations according to the pre-input indoor geometric layout information in the control unit, and on the basis of this flow field, solving a species transport equation through numerical simulation for various kinds of pollutants to obtain a unit pulse response F of all potential pollution sources at the positions of the n-1 sensors, so as to identify the positions and hourly release rates of actual pollution sources for various kinds of pollutants.

Assignees

• Univ Dalian Tech

Inventors

• Zhang Tengfei
• Wei Yun
• Wang Shugang

Classifications

• B01D2253/102

  Carbon · CPC title

• B01D53/0407

  Constructional details of adsorbing systems · CPC title

• A61L2209/22

  Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning · CPC title

• A61L9/20

  Ultraviolet radiation · CPC title

• F24F11/64

  using pre-stored data · CPC title