Targeted clean air delivery

• US 10,393,399 B2
• Filed: 07/10/2017
• Issued: 08/27/2019
• Est. Priority Date: 07/15/2016
• Status: Active Grant

• Current Assignee: Versuni Holding BV
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Hilbig, Rainer, Shi, Jun, Koerber, Achim Gerhard Rolf, Scheja, Michael Martin, Suijver, Jan Frederik, Bouma, Peter Hermanus
• Primary Examiner(s): McAllister, Steven B
• Assistant Examiner(s): Schult, Allen R
• Application Number:
  US16/077,121
• Publication Number:
  US 20190128553A1
• Time in Patent Office: 778 Days
• Field of Search: 454229
• CPC Class Codes: F24F 1/00 Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/77 by controlling the speed of ventilators
• CPC Class Codes: F24F 11/79 for controlling the direction of the supplied air
• CPC Class Codes: F24F 11/83 by controlling the supply of heat-exchange fluids to heat-exchangers
• CPC Class Codes: F24F 2110/00 Control inputs relating to air properties
• CPC Class Codes: F24F 2120/10 Occupancy
• CPC Class Codes: F24F 2120/12 Position of occupants
• CPC Class Codes: F24F 2120/14 Activity of occupants
• CPC Class Codes: F24F 2120/20 Feedback from users
• CPC Class Codes: F24F 2221/125 mounted on wheels
• CPC Class Codes: F24F 2221/38 Personalised air distribution
• CPC Class Codes: F24F 3/163 Clean air work stations, i.e. selected areas within a space which filtered air is passed
• CPC Class Codes: Y02B 30/70 Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

Disclosed is an air purification system (10) including an air purification apparatus (100) comprising an air inlet (112); an air outlet (114) for expelling air in a target direction (116) into a region and including an adjustment mechanism (121) arranged to adjust said target direction in response to a target direction adjustment signal from a control system for aiming the air outlet at the face of a person in said region; at least one pollutant removal structure (101) in between the air inlet and the air outlet; and an air displacement apparatus (113) for displacing air from the air inlet to the air outlet through the at least one pollutant removal structure, and a sensor (151, 160, 135) adapted to determine a breathing parameter of the person, wherein the air purification apparatus is configured to expel said air as a function of said breathing parameter. A computer program product for configuring such a control system is also disclosed.

Claims

1. An air purification system comprising:

an air purification apparatus that includes

(a) an air inlet,

(b) an air outlet for expelling air in a target direction into a region, wherein the air outlet includes an adjustment mechanism arranged to adjust said target direction in response to a target direction adjustment signal for aiming the air outlet at the face of a person in said region,

(c) at least one pollutant removal structure disposed in between the air inlet and the air outlet, and

(d) an air displacement apparatus for displacing air from the air inlet to the air outlet through the at least one pollutant removal structure;

a breathing sensor adapted to determine a breathing parameter of the person, wherein the breathing parameter comprises at least an inhalation or an exhalation phase of a breathing cycle of the person at which the air outlet is aimed, wherein the air purification apparatus is configured to expel said air via the air outlet as a function of said breathing parameter; and

a controller coupled to the air outlet and/or the air displacement apparatus, wherein responsive to the breathing parameter determined via the breathing sensor, the controller is arranged to increase an air flow rate and/or reduce the air flow rate of air expelled in the target direction, further comprising a suction device including;

a suction port arranged to capture air exhaled by the person, said suction port including (i) a suction device and (ii) at least one sensor including the breathing sensor adapted to determine the breathing parameter of the person arranged in said suction port, said at least one sensor being arranged to monitor an analyte of interest in the captured air exhaled by the person; and

a monitoring device arranged to monitor vital signs of the person from sensor data provided by the at least one sensor as the breathing parameter, wherein the air purification apparatus is configured to expel said air as a function of the vital signs monitored by said monitoring device, wherein the at least one sensor is at least one of;

an O₂ sensor, a relative humidity sensor and a gas temperature sensor.

2. The air purification system of claim 1, wherein the controller is adapted to increase an air flow rate of the air expelled by the air outlet during a detected inhalation phase of the breathing cycle.

3. The air purification system of claim 2, further comprising a substance delivery device responsive to a trigger signal from the controller, wherein the controller is adapted to trigger a release of a substance by the substance delivery device into the air expelled via the air outlet during a detected specific phase of the breathing cycle.

4. The air purification system of claim 2, wherein the controller is adapted to increase the air flow rate produced by the air displacement apparatus and/or adjust a diameter of the air outlet during the detected inhalation phase of the breathing cycle.

5. The air purification system of claim 1, wherein the controller is arranged to trigger the generation of an air flow aimed at the person during the monitoring of the vital signs with the monitoring device.

6. The air purification system of claim 1, wherein the suction device further comprises a guide surface extending from the suction port, wherein the controller is arranged to trigger the generation of an air flow aimed at the guide surface during the monitoring of the vital signs with the monitoring device.

7. The air purification system of claim 1, wherein the orientation of the air outlet is adjustable or the orientation of the air purification apparatus is adjustable by the adjustment mechanism.

8. The air purification system of claim 1, further comprising:

a control system, wherein the control system includes;

a presence detection arrangement including an image capturing device arranged to capture an image of said region; and

a processing arrangement arranged to;

process the image captured by the image capturing device in order to recognize a face in said image and to determine a position of said face in said region; and

generate the target direction adjustment signal based on the determined position of said face in said region.

9. The air purification system of claim 8, wherein:

the image capturing device is arranged to capture a sequence of images of said region; and

the processing arrangement is arranged to update the target direction adjustment signal in accordance with a change in the position of said face in said region detected from said sequence.

10. The air purification system of claim 8, wherein the image capturing device is mounted on or near the air outlet.

11. The air purification system of claim 8, further comprising a user input device, wherein the processing arrangement is further arranged to:

systematically vary the target direction adjustment signal until receiving a user input from the user input device indicative of said air being expelled in the target direction;

trigger the image capturing device to capture an image of the region in response to the received user input;

process the image captured by the image capturing device in order to recognize a face in said image and to determine the position of said face in said region; and

correlate the target direction with the determined position.

12. A computer program product comprising a computer readable storage medium having computer readable program instructions embodied therewith for, when executed on a processing arrangement of a control system for the air purification system of claim 1, cause the processing arrangement to:

trigger an image capturing device of the control system to capture an image of a region into which the air outlet of the air purification apparatus is arranged to expel air in a target direction;

process the image captured by the image capturing device in order to recognize a face of a person in said image and to determine the position of said face in said region;

trigger a sensor to determine a breathing parameter of the person;

generate the target direction adjustment signal based on the determined position of said face in said region;

generate an air flow generation control signal based on the determined breathing parameter; and

transmit the generated target direction adjustment signal and the air flow generation control signal to the air purification apparatus for controlling the target direction of the air outlet and the expelling of clean air through the air outlet respectively.

13. The computer program product of claim 12, further comprising computer readable program instructions embodied therewith for, when executed on said processing arrangement, cause the processing arrangement to:

trigger the image capturing device to capture a sequence of images of said region; and

update the target direction adjustment signal in accordance with a change in the position of said face in said region detected from said sequence.

14. The air purification system of claim 1, wherein the controller is further adapted to define a composition of the air to be delivered to the person in response to exhaled air composition information concerning air exhaled by the person as obtained via the at least one sensor.

15. The air purification system of claim 14, wherein responsive to components in the exhaled air being indicative of halitosis or another condition that may cause breath of the user to be perceived as smelling unpleasantly, the controller is further adapted to control a release of one or more scented substances of one or more substance delivery devices to mask corresponding unpleasant smells.