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Class 96/21 - Current sensing means


Subclass of Class 96 - Gas separation: apparatus
Definition: Apparatus in which means are provided to detect electrical
No. of patents: 22
Last issue date: 11/16/2010


NumberTitleIssue Date
7833322Air treatment apparatus having a voltage control device responsive to current sensing
An air treatment apparatus that includes an electrode assembly, a voltage supply, a current sensing device operably coupled to the electrode assembly, and a voltage control device coupled to the current sensing device and the voltage supply. The voltage control devi...
11/16/2010
7785404Ionic air purifier with high air flow
An air purifier includes a housing, a high voltage power supply, a first electrode assembly in which a wire-like first electrode is either the only first electrode or, alternatively, is spaced sufficiently far from any other such first electrodes so as to avoid unde...
08/31/2010
7356987Exhaust gas recirculation system having an electrostatic precipitator
An exhaust gas recirculation system for a power source, has at least one inlet port configured to receive at least a portion of a flow of exhaust produced by the power source. The exhaust gas recirculation system also has an electrode disposed upstream of the at lea...
04/15/2008
7351274Air filtration system control
An intense field dielectric air filtration system associated with an air conditioning unit includes a microprocessor based control system which may be connected to the thermostat of the air conditioning unit to energize the air filtration system in response to a cal...
04/01/2008
7332019Air filtration system
An air filtration system includable in and for HVAC equipment includes one or more intense field dielectric filter units and a field charging unit retained in a support structure or cabinet by a removable door which includes control circuitry and contactors engageab...
02/19/2008
7267711Electrostatic precipitator for diesel blow-by
A compact electrostatic precipitator is designed specifically for use in connection with eliminating particles from crankcase emissions of a Diesel engine. Such emissions may carry solid soot particles as well as suspended oil droplets. The electrostatic precipitato...
09/11/2007
7261765Electrostatic precipitator
An electrostatic precipitator having a plurality of electrostatic precipitation units positioned within the electrostatic precipitator. Each of the electrostatic precipitation units includes a plurality of negative wire electrodes and a plurality of positive electro...
08/28/2007
7252701Method of cleaning electric filter and electric filter
The invention relates to a method of cleaning an electric filter and to an electric filter. In the method gas containing particles is fed to a chamber (2) of the electric filter. The gas is further fed to gas channels (5) in an emission system (3
08/07/2007
7246502Self-contained flush-mount bulkhead air conditioning unit with novel evaporator/blower assembly housing
An air conditioning unit having a flush-mounted self-contained evaporator assembly adapted for mounting into the front or rear bulkhead of a bus or similar type vehicle. The evaporator assembly includes a specially designed housing to provide a compact self-containe...
07/24/2007
6951582Air purifier device
An air purifier device includes a fan unit in an electrically conductive housing for drawing ambient air into the housing via an air inlet, and an electrically conductive dust-collecting member in the housing and disposed adjacent to an air outlet. A detecting unit ...
10/04/2005
6096119Apparatus for using ferrite spacers to suppress arc noise in electrostatic precipitators
In a two-stage, electrostatic precipitator for extracting airborne particles, charged plates are electrically connected to each other and physically separated from each other by ferrite spacers so that an impedance of the spacers limits an amount of arc d...
08/01/2000
5639294Method for controlling the power supply to an electrostatic precipitator
Method for controlling, in case of flashover between electrodes in an electrostatic precipitator, the current supply to the electrodes from a controllable high-voltage direct-current source. The current supplied to the precipitator and the voltage between...
06/17/1997
5378978System for controlling an electrostatic precipitator using digital signal processing
A system for controlling an electrostatic precipitator adapted to be powered by an alternating power source includes a regulator for regulating at least one precipitator operating parameter in response to at least one control signal, a measurement circuit...
01/03/1995
4860149Electronic precipitator control
A method and apparatus for controlling power to a preciptator 27. After each spark the power to the precipitator is reduced to zero, increased along a fast ramp 15 for a fixed period of time and then increased along a slow ramp 17 until a spark occurs. Th...
08/22/1989
4854948Supply circuit for electrostatic dust separator
The pulse voltage for the electrode (12) of a dust separator (10) is generated by a thyristor circuit (19) to be transferred to a dust separator through a transformer (16). It being possible that voltage arcings take place at the dust separator (10), ther...
08/08/1989
4507131Electronic air filtering apparatus
Air filtering apparatus includes a filter cell having ionizing and collecting structure, a high voltage power supply and control unit for supplying a high voltage to the filter cell, a separate low voltage power supply unit for supplying operating power t...
03/26/1985
4390831Electrostatic precipitator control
Voltage and current supplied to the primary winding of the transformer-rectifier (T-R) set of an electrostatic precipitator via silicon-controlled rectifiers and a reactor are automatically controlled by sensing spit and spark discharges within the precip...
06/28/1983
4290003High voltage control of an electrostatic precipitator system
There is provided a precipitator system including a voltage controller which produces from an alternating power source a variable output. This variable output drives a high voltage converter which applies a high voltage to a precipitator. This variable ou...
09/15/1981
4267502Precipitator voltage control system
An improved precipitator voltage control system including an automatic voltage control (AVC) circuit, a firing circuit, an alarm circuit, a power-saving circuit, a remote set-point control circuit and a power supply, all of which are mounted on a single, ...
05/12/1981
4238810Forced commutation precipitator circuit
A control circuit for an electrical precipitator having a high voltage transformer with a bridge rectifier between the secondary of the transformer and the high voltage precipitator electrodes. The control circuit includes a pair of oppositely poled main ...
12/09/1980
4152124Automatic control system for electric precipitators
In an adaptive type of control for precipitators, the current reference ramp signal is compared with a precipitator current signal to produce a phase reference signal which is combined with sawtooth waves to produce a first train of pulses. In a spark det...
05/01/1979
4061961Circuit for controlling the duty cycle of an electrostatic precipitator power supply
A circuit for controlling the duty cycle of a two-stage electrostatic precipitator power supply. The circuit includes a switching device connected in series with the primary winding of the power supply transformer and a circuit operable for controlling th...
12/06/1977
 
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