System and method of controlling operation of a liquid diffusion appliance

• US 7,930,068 B2
• Filed: 03/26/2007
• Issued: 04/19/2011
• Est. Priority Date: 03/26/2007
• Status: Expired due to Fees

• Current Assignee: Prolitec Incorporated
• Original Assignee: Prolitec Incorporated
• Inventors: Robert, Marc, Weening, Richard
• Primary Examiner(s): Kasenge; Charles R
• Application Number:
  US11/691,363
• Publication Number:
  US 20080243273A1
• Time in Patent Office: 1,485 Days
• Field of Search: 700/67, 700/281, 700/282, 700/283, 700/285, 239/34, 239/44, 239/45, 239/68, 239/69, 239/573, 222/1, 222/14, 222/52, 222/57, 222/71, 222/649, 261/26, 261/115, 422/5
• US Class Current: 700/283
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/22 Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2209/111 Sensor means, e.g. motion, brightness, scent, contaminant sensors
• CPC Class Codes: A61L 9/12 Apparatus, e.g. holders, therefor
• CPC Class Codes: A61L 9/14 using sprayed or atomised substances including air-liquid contact processes
• CPC Class Codes: F24F 8/50 by odorisation

Abstract

A method and system of controlling operation of a diffusion appliance to treat the atmosphere within an enclosed space. The appliance may be programmed to operate according to a control scheme specifying a flow rate of liquid to a diffusion means and a periodic operation of the diffusion means. Control schemes may be associated with different volumes of spaces to be treated by the appliance. Anti-fatigue schemes may provide variation of the flow rate or periodic operation of the appliance. Initiation controls schemes may be used to start treatment of the space before the appliance is programmed to operate according to one of the control schemes.

Claims

1. A method of controlling a liquid diffusion appliance comprising:

providing an enclosed space to be treated by a liquid and with which the appliance is in fluid communication, the appliance including a reservoir of liquid and a means of diffusing the liquid into the air of the space;

providing a plurality of control schemes for the appliance which based on characteristics of the liquid and a level of treatment desired for the space, each of the control schemes specifying operational parameters for the appliance including a flow rate of liquid, and a periodic timing of operation of the diffusion means;

providing the diffusion means including a venturi in fluid communication with the liquid reservoir, and the venturi in fluid communication with a source of compressed gas, and wherein operation of the diffusion means comprises release of the pressurized gas into the venturi, the release of the gas into the venturi operating to draw liquid from the reservoir into the venturi where the liquid mixes with the gas at the desired flow rate and then dispersing the gas and liquid mixture into the space;

determining a volume of the space to be treated; and

selecting one of the control schemes based on the volume of the space to be treated;

operating the appliance based on the selected control scheme.

2. The method of claim 1, further comprising;

providing a plurality of initiation of treatment schemes, each of these initiation schemes adapted to accelerate diffusion of liquid to the desired level of treatment in the space and each initiation scheme associated with at least one of the control schemes, each initiation scheme defining liquid flow rate and operation of the diffusion means;

selecting the initiation scheme associated with the selected control scheme; and

operating the appliance based on the initiation scheme before operating the appliance based on the control scheme.

3. The method of claim 1, wherein at least one of the control schemes include an anti-fatigue scheme which includes a predetermined periodic variation in flow rate.

4. The method of claim 1, wherein at least one of the control schemes include an anti-fatigue scheme which includes a predetermined periodic variation in operation of the diffusion means.

5. The method of claim 1, wherein at least one of the control schemes include an anti-fatigue scheme which includes variation of the flow rate and operation of the diffusion means at predetermined intervals.

6. The method of claim 1, wherein at least one of the control schemes include an anti-fatigue scheme which includes variation of the flow rate at random intervals.

7. The method of claim 1, wherein at least one of the control schemes include an anti-fatigue scheme which includes variation of the operation of the diffusion means at random intervals.

8. The method of claim 1, wherein at least one of the control schemes include an anti-fatigue scheme which includes variation of the flow rate and operation of the diffusion means at random intervals.

9. The method of claim 1, wherein the flow rate for any of the plurality of control schemes is selected to permit intermittent operation of the diffusion means to provide the desired level of treatment within the space.

10. The method of claim 1, wherein a length of pause in the periodic operation of the diffusion means for at least one of the control schemes is selected to permit the level of treatment within the space to drop below the desired level of treatment and a length of operation of the diffusion means is selected to return the level of treatment to the desired level of treatment.

11. The method of claim 1, wherein a length of pause in the periodic operation of the diffusion means for at least one of the control schemes is selected so that the level of treatment within the space stays substantially constant and near the desired level of treatment.

12. The method of claim 1, wherein the source of pressurized gas is a compressor, and the operation of the diffusion means includes operating the compressor to release pressurized gas to the venturi.

13. The method of claim 12, wherein the compressor is incorporated into the appliance.

14. The method of claim 1, wherein the source of pressurized gas is a precompressed source and the operation of the diffusion means includes permitting gas from the precompressed source to flow into the venturi.

15. The method of claim 1, wherein the liquid in the reservoir is a scent.

16. The method of claim 1, wherein the liquid in the reservoir is a disinfectant.

17. The method of claim 1, wherein the liquid in the reservoir is a bio-technical treatment.

18. The method of claim 1, further comprising:

providing an atmospheric sensor positioned within the space operatively connected to the appliance; and

adjusting the operational parameters of the appliance based on signals from the atmospheric sensor relating to the desired level of treatment within the space.

19. The method of claim 1, further comprising a plurality of appliances treating the enclosed space and operating each of the appliances according to the selected control scheme.

20. The method of claim 1, further comprising a plurality of appliances each positioned to treat a portion of the enclosed space, selecting a control scheme for each appliance based on the portion of the enclosed space that appliance is treating, and operating each appliance according to a control scheme selected for that appliance.

21. The method of claim 1, further comprising a plurality of appliances treating a plurality of enclosed spaces and operating each appliance based on the selected control scheme.

22. The method of claim 1, further comprising an auxiliary fan positioned to disperse the liquid diffused by the appliance.

23. The method of claim 22, further comprising operating the auxiliary fan in coordination of the operation of the appliance according to the selected control scheme.

24. A system for treating an enclosed space with a liquid, the system comprising:

an appliance with a diffusion means in fluid communication with the space and also connected to a liquid reservoir containing the liquid to be dispersed;

the diffusion means including a venturi in fluid communication with the liquid reservoir, and the venturi in fluid communication with a source of compressed gas, and wherein operation of the diffusion means comprises release of the pressurized gas into the venturi, the release of the gas into the venturi operating to draw liquid from the reservoir into the venturi where the liquid mixes with the gas at a desired flow rate and the dispersing the gas and liquid mixture into the space; and

,

a controller connected to the appliance, the controller including a plurality of control schemes for dispersion of the liquid into the space, each control scheme defining operational parameters for the appliance including a periodic operation of the diffusion means and the flow rate of liquid from the reservoir through the diffusion means, each of the control schemes corresponding to a particular volume within the space.

25. The system of claim 24, further comprising each control scheme associated with an initiation control scheme, the initiation control scheme defining a constant operation of the diffusion means at the flow rate of the associated control scheme for a fixed period of time, and wherein upon the selection of an initiation function the appliance will diffuse the liquid according to the initiation control scheme and then the appliance will diffuse liquid according to the selected control scheme.

26. The system of claim 24, further comprising each control scheme associated with an anti-fatigue control scheme, the anti-fatigue control scheme defining a variation in the periodic operation of the diffusion means of the associated control scheme at predetermined intervals.

27. The system of claim 24, further comprising each control scheme associated with an anti-fatigue control scheme, the anti-fatigue control scheme defining a variation in the periodic operation of the diffusion means of the associated control scheme at random intervals.

28. The system of claim 24, further comprising each control scheme associated with an anti-fatigue control scheme, the anti-fatigue control scheme defining a variation in the flow rate of the associated control scheme at predetermined intervals.

29. The system of claim 24, further comprising each control scheme associated with an anti-fatigue control scheme, the anti-fatigue control scheme defining a variation in the flow rate of the associated control scheme at random intervals.

30. The system of claim 24, further comprising:

a sensor operatively connected to the controller, wherein the controller may adjust the operational parameters of the appliance based on signals from the sensor related to the conditions within the space.

31. The system of claim 24, further comprising a plurality of appliances each operated by the controller.

32. The system of claim 24, further comprising a plurality of appliances, each appliance operated by one of a plurality of controllers.

33. The system of claim 24, further comprising an auxiliary fan positioned to disperse the liquid diffused by the appliance into the enclosed space.