Abstract

An electrostatic sprayer system for dispensing and dispersing a liquid containing a spray compound includes a spray cloud dispersal feature that reduces the time that a residual spray cloud containing droplets including the spray compound remains suspended after spraying. A method of dispersing the residual spray cloud is implemented by a control system that causes a flow control system to deliver a non-active gas or liquid in conjunction with stopping delivery of the liquid containing the spray agent and charged with the same polarity, so that a charged cloud of the non-active gas or liquid, which may be air, displaces the suspended active fluid particles. The non-active gas or liquid may be dispensed for a predetermined time interval as determined by the control system, or the operator may control the time interval during which that the non-active fluid is dispensed.

IPC Classes  ?

• B05B 5/03 - Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas
• B05B 12/00 - Arrangements for controlling deliveryArrangements for controlling the spray area
• B05B 5/00 - Electrostatic spraying apparatusSpraying apparatus with means for charging the spray electricallyApparatus for spraying liquids or other fluent materials by other electric means
• B05B 5/053 - Arrangements for supplying power, e.g. charging power
• B05B 5/16 - Arrangements for supplying liquids or other fluent material

Abstract

An electrostatic sprayer system for dispensing and dispersing a liquid containing a spray compound includes a spray cloud dispersal feature that reduces the time that a residual spray cloud containing droplets including the spray compound remains suspended after spraying. A method of dispersing the residual spray cloud is implemented by a control system that causes a flow control system to deliver a non-active gas or liquid in conjunction with stopping delivery of the liquid containing the spray agent and charged with the same polarity, so that a charged cloud of the non-active gas or liquid, which may be air, displaces the suspended active fluid particles. The non-active gas or liquid may be dispensed for a predetermined time interval as determined by the control system, or the operator may control the time interval during which that the non-active fluid is dispensed.

IPC Classes  ?

• B05B 5/03 - Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas
• B05B 5/00 - Electrostatic spraying apparatusSpraying apparatus with means for charging the spray electricallyApparatus for spraying liquids or other fluent materials by other electric means
• B05B 5/053 - Arrangements for supplying power, e.g. charging power
• B05B 5/16 - Arrangements for supplying liquids or other fluent material
• B05B 12/00 - Arrangements for controlling deliveryArrangements for controlling the spray area

Abstract

An electrostatic sprayer system for spraying a liquid includes a control system that provides user certification status control and usage reporting for the electrostatic sprayer system, including authorizing the user in conformity with the user's certification status and tracking the user, material(s), locations, duration of operation and amount of material being sprayed. The sprayer system includes a sprayer head having an outlet for dispensing a liquid that has been atomized and electrically charged via an electrode of the sprayer system, a vessel containing the liquid prior to dispensing, a power supply for providing a voltage and current to the electrode, a flow controller for controlling flow of liquid emitted from an outlet of the sprayer head, and a control system for controlling the flow controller in conformity with a certification status of a user of the sprayer system and reporting usage of the sprayer system to a database.

IPC Classes  ?

• B05B 5/00 - Electrostatic spraying apparatusSpraying apparatus with means for charging the spray electricallyApparatus for spraying liquids or other fluent materials by other electric means
• B05B 5/03 - Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas
• B05B 12/00 - Arrangements for controlling deliveryArrangements for controlling the spray area
• B05B 12/12 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target responsive to conditions of ambient medium or target, e.g. humidity, temperature
• B05B 12/08 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target

Abstract

An electrostatic sprayer for spraying a liquid includes a nozzle formed from a a nozzle body that has an inlet for receiving a liquid and a liquid tip having an outlet for ejection of the liquid to form a liquid spray. The nozzle also includes an electrode disposed around the outlet of the liquid tip for charging the liquid and a dielectric shroud disposed around at least a portion of the liquid tip to prevent leakage currents from reducing a potential of the electric field between the liquid and the electrode, which would otherwise reduce the effectiveness of the sprayer. A conductor that couples the electrode to a power supply may pass through a hole extending through the shroud. The shroud may include one or more vents to permit air and liquid to pass through the dielectric shroud to reduce accumulation of liquid.

IPC Classes  ?

• B05B 5/08 - Plant for applying liquids or other fluent materials to objects
• B05B 5/043 - Discharge apparatus, e.g. electrostatic spray guns using induction-charging
• B05B 7/04 - Spray pistolsApparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
• B05B 7/22 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed electrically, e.g. by arc

Abstract

An electrostatic sprayer for spraying a liquid includes a nozzle formed from a nozzle body that has an inlet for receiving a liquid and a liquid tip having an outlet for ejection of the liquid to form a liquid spray. The nozzle also includes an electrode disposed around the outlet of the liquid tip for charging the liquid. The electrode is captive in a removable cap that is that is detachably secured, e.g., via threaded connection, to the sprayer, so that the cap is removable for servicing, cleaning or replacement of nozzle components such as the liquid tip. The nozzle includes a calibratable stop mechanism for controlling a position of the electrode with respect to the outlet of the liquid tip when the cap is installed. The stop mechanism may be provided by a locking ring around a barrel of the sprayer that stops rotation of the cap.

IPC Classes  ?

• B05B 5/00 - Electrostatic spraying apparatusSpraying apparatus with means for charging the spray electricallyApparatus for spraying liquids or other fluent materials by other electric means
• B05B 5/043 - Discharge apparatus, e.g. electrostatic spray guns using induction-charging
• B05B 7/04 - Spray pistolsApparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
• B05B 7/22 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed electrically, e.g. by arc