HK1063442A

HK1063442A - Electrode self-cleaning mechanism for electro-kinetic air transporter-conditioner devices

Info

Publication number: HK1063442A
Application number: HK04106256.2A
Authority: HK
Inventors: Paul Reeves John; Fai Lau Shek; J. Parker Andrew
Original assignee: 高超明智公司
Priority date: 2002-06-20
Filing date: 2004-08-20
Publication date: 2004-12-31

Description

Electrode self-cleaning mechanism for electric air conveying-regulating device

Priority requirement

The present application is U.S. provisional patent application No. 60/391,070, filed on date 6/20 2002, which is hereby incorporated by reference.

Cross reference to related applications

This application relates to U.S. patent application No. 09/924,600, 8/2001, which is a continuation of U.S. patent application No. 09/564,960, 5/4/2000, 09/564,960, which is now U.S. patent No. 6,350,417B1, which is a continuation-in-part of U.S. patent application No. 09/186,471, 11/5/1998, which is now U.S. patent No. 6,176,977. This application also relates to U.S. patent application No. 09/730,499 filed on 5/12/2000, which is a continuation of U.S. patent application No. 09/186,471 filed on 5/11/1998, now U.S. patent 6,176,977. All of these references are incorporated herein by reference.

Technical Field

The present invention relates generally to apparatus for generating ozone and an electrokinetic air stream substantially depleted of particulate matter, and more particularly to cleaning of wires or wire electrodes in such apparatus.

It has long been known in the art to generate air flow by rotating fan blades by a motor. However, such fans can generate significant noise and can also be harmful to children who insert their fingers or pencils into the rotating fan blades. While such fans can produce a strong air flow, for example 1,000 cubic inches per minute or more, they require a significant amount of electrical power to operate the motor and have virtually no conditioning effect on the flowing air.

Background

It is known that a fan with a high efficiency particulate air filter element can remove particulate matter greater than about 0.3 μm. However, because the filter element presents a resistance to the airflow, the motor size needs to be doubled to maintain the required airflow strength. In addition, HEPA filter elements are expensive and represent a significant portion of the sales price of HEPA fan units. While such filter fan devices can condition air by removing larger particulate matter, they cannot remove smaller particulate matter, such as bacteria, that can pass through the filter element.

It is also known in the art to generate an air flow by electro-kinetic (electro-kinetic) technology, in which electrical energy is directly converted into an air flow without the need for mechanically moving elements. Such a system is described in U.S. Pat. No. 4,789,801 issued to Lee in 1988, FIGS. 1A and 801

A simplified version of which is shown in fig. 1B. The Lee system 10 includes an array of small area (minimum cross-section) electrodes 20 symmetrically spaced from an array of large area (maximum cross-section) electrodes 30. The positive pole of a pulse generator 40, which can output a series of high voltage pulses (e.g. 0 to 5kV), is connected in the array of smallest cross-section, while the negative pole of the pulse generator is connected in the array of largest cross-section.

The high voltage pulses ionize the air between the arrays and thus achieve an air flow 50 moving from the minimum cross-sectional array to the maximum cross-sectional array without any moving parts. Particulate matter 60 in the air is carried by the air flow 50 and also moves in the direction of the maximum cross-sectional array 30. Most particulate matter is electrostatically attracted to and stays at the surface of the largest cross-sectional electrode array, thereby regulating the air flow in the system 10. In addition, the high voltage electric field between the electrode arrays may release ozone into the surrounding environment, which may destroy or at least alter the entrainment, including bacteria, in the air stream.

In the embodiment shown in FIG. 1A, the smallest cross-section electrode 20 is circular in cross-section and about 0.003 inches (0.08mm) in diameter, while the largest cross-section electrode 30 is larger in area, with its cross-section forming a "teardrop" shape. The size of the cross-sectional radius of curvature ratio between the maximum and minimum section electrodes is not specified in the invention, but should be greater than 10: 1 from the Lee drawing. As shown in fig. 1A, the bulbous front surface of the largest cross-section electrode faces the smallest cross-section electrode, while the sharp tail thereof faces the direction of discharge of the air stream. It is clear that the "sharp" tail of the largest cross-section electrode promotes good electrostatic adsorption of particulate matter carried by the air stream. Lee does not describe how such a teardrop shaped maximum cross-section electrode is manufactured, but rather estimates that a more expensive die casting or extrusion process is used.

In another embodiment shown in fig. 1B, the maximum cross-section electrode 30 of Lee is symmetrically elongated in cross-section. The elongate trailing edge of the largest cross-section electrode increases the area available for adsorption of particulate matter carried by the air stream. Lee teaches that adding a passive third electrode array 70 improves deposition efficiency and that the release of anions into the environment can be reduced as desired. It will be appreciated that increasing efficiency by adding a third electrode array increases the cost of producing and maintaining the system.

While the electrokinetic technique proposed by Lee is more advantageous than conventional electric fan-filter devices, the maximum cross-section electrode of Lee is expensive to produce. Furthermore, it would be advantageous to increase the efficiency of the filter in other ways than by the embodiment proposed by Lee, especially without the addition of a third electrode array.

In applicant's parent invention, an electrically powered air transporter-conditioner having first and second electrode array configurations is provided which is more efficient than Lee-type systems and does not require expensive production techniques to produce the electrodes. The user may also be allowed to select an acceptable amount of ozone generated.

The second array of electrodes is used to collect particulate matter and the user can remove the second array of electrodes from the air transporter-conditioner for periodic cleaning to remove particulate matter from the electrode surfaces. However, the user must take care to clean the second array of electrodes with water, and to ensure that the electrodes are completely dry before reinserting them into the air delivery-conditioning apparatus. If a wet freshly cleaned electrode is inserted into the device, moisture from the freshly cleaned electrode accumulates in the device after the device is switched on, and the accumulated moisture bands can create a high voltage arc from the first electrode array to the second electrode array, which can damage the device.

The metal wire or wire-like electrode in the first electrode array is less robust than the electrode in the second electrode array (the terms "metal wire" or "wire-like" are used interchangeably herein to indicate that the electrode may be made of metal wire, or that the electrode is larger or stiffer than the metal wire and has the shape of a metal wire). In embodiments where the user can remove the first array electrode from the air delivery-conditioning apparatus, care is taken during cleaning to prevent excessive force from breaking the wire electrode. However, eventually the first array electrode will accumulate a layer of deposited material, or a coating of fine grey material.

Eventually the efficiency of the air transporter-conditioner will be reduced if this deposit continues to accumulate. In addition, the deposition can produce an audible vibration that can interfere with persons approaching the air transporter-conditioner, but the reason for this has not been fully ascertained.

There is therefore a need for a means to protect air delivery-conditioning units from moisture that may accumulate in the unit as a result of cleaning by the user. In addition, there is a need for a means to periodically clean the wire electrodes of the first electrode array in an air delivery-conditioning unit. This cleaning is preferably accomplished directly without removing the first array electrodes from the air transporter-conditioner, requiring periodic operation by the user.

The present invention provides such a method and apparatus.

Disclosure of Invention

The present invention relates to an improvement over the state of the art. In particular, the present invention includes an air cleaner having at least one emitter electrode and at least one collector electrode. Embodiments of the present invention include a ball or other object having a hole therethrough such that the emitter passes through the hole of the ball or other object. To move the ball or other object relative to the emitter to clean the emitter, a ball or object moving arm is disposed within the air cleaner and is operatively associated with the ball or object.

In another aspect of the invention, the collecting electrode is removable from the air cleaner for cleaning, and a ball or object moving arm is operatively associated with the collecting electrode, e.g., the collecting electrode is removed from the air cleaner, and moves the ball or object to clean the emitter.

In another aspect of the invention, an air cleaner includes a housing having a top and a bottom, wherein a collecting electrode can be removed through the top for cleaning, wherein when such collecting electrode is removed from the top, the ball and or object moving arm moves the ball or object to the top to clean the emitter.

In another aspect of the invention, the emitter has a bottom end stop on which the ball can rest when it is at the bottom of the emitter. A ball moving arm is movably mounted to the emitter electrode such that by having a ball or object resting on the bottom end stop, the ball or object moving arm can move through the ball or object and return under the ball or object in preparation for moving the ball or object to clean the emitter electrode.

In another aspect of the present invention, there is provided a method of cleaning an air cleaner including a housing having a top and a bottom, and wherein the air cleaner includes a first electrode, a second electrode array, balls or objects mounted on the first electrode, and a ball or object moving arm mounted on the second electrode array, comprising the steps of: the second electrode array is removed from the top of the housing while the ball or object is moved along the first electrode by the urging of a ball or object moving arm to clean the first electrode.

Other features and advantages of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings.

Drawings

FIG. 1A is a plan cross-sectional view of a first embodiment of a prior art electrically-powered air-delivery conditioning system;

FIG. 1B is a plan cross-sectional view of a second embodiment of a prior art electrically-powered air-delivery conditioning system;

FIG. 2A is a perspective view of an embodiment of the present invention;

FIG. 2B is a perspective view of the embodiment of FIG. 2A with a second array electrode assembly partially withdrawn depicting a mechanism for self-cleaning the first array electrode assembly in accordance with the present invention;

FIG. 3 is a block circuit diagram of the present invention;

FIG. 4A is a perspective block diagram showing a first embodiment of an electrode assembly according to the present invention;

FIG. 4B is a plan block diagram of the embodiment of FIG. 4A;

FIG. 4C is a perspective block diagram showing a second embodiment of an electrode assembly according to the present invention;

FIG. 4D is a plan block diagram of a variation of the embodiment of FIG. 4C;

FIG. 4E is a perspective block diagram showing a third embodiment of an electrode assembly according to the present invention;

FIG. 4F is a plan block diagram of the embodiment of FIG. 4E;

FIG. 5A is a perspective view of an electrode assembly depicting a first embodiment of a mechanism for cleaning a first electrode array electrode in accordance with the present invention;

FIG. 5B is a side view illustrating the electrode cleaning mechanism shown in FIG. 5A according to the present invention;

FIG. 5C is a plan view of the electrode cleaning mechanism shown in FIG. 5B in accordance with the present invention;

FIG. 6A is a perspective view of a pivotable electrode cleaning mechanism according to the present invention;

6B-6D depict the cleaning mechanism of FIG. 6A in various positions according to the present invention;

FIGS. 7A-7E are cut-away views of a ball-like mechanism for cleaning a first electrode array electrode in accordance with the present invention;

FIG. 8A depicts a cross-sectional view of another embodiment of a cleaning mechanism of the present invention illustrating a ball located on top of a ball lift arm;

FIG. 8B is a cross-sectional view of the embodiment of the invention of FIG. 8A depicting a ball lift arm;

FIG. 8C is a perspective view of the embodiment of the present invention depicted in FIGS. 8A and 8B;

Detailed Description

The following description is presented to enable any person skilled in the art to make and use the invention. Various modifications to the described embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present invention as defined in the appended claims. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein. The specification and drawings of all patents and patent applications cited in this application are hereby incorporated by reference for a complete understanding of the invention disclosed.

By way of general introduction, the applicant's parent application provides an electrically powered system for conveying and conditioning air without moving parts. The air is conditioned in such a way that it is ionized, contains an appropriate amount of ozone and removes at least some of the airborne particles. The electrically powered air delivery-conditioning device disclosed herein comprises a louvered and grid-like body housing an ionization unit. The ionization cell includes a high voltage Direct Current (DC) converter that steps up ordinary 110V Alternating Current (AC) to a high voltage and a generator that receives the high voltage DC and outputs peak-to-peak high voltage pulses of about 10KV, although an output of approximately 100% duty cycle (e.g., high voltage DC) can be used instead of pulses. The apparatus also includes an electrode assembly device having first and second spaced apart arrays of conductive electrodes, the first and second arrays preferably being connected to the positive and negative outputs of the high voltage generator, respectively.

The electrode assembly is preferably composed of a first array and a second array having electrode shapes that are easy to manufacture. In a related embodiment of the invention, the first array comprises metal wire (or wire-like) electrodes. The second array includes U-shaped or L-shaped electrodes having one or two trailing surfaces, the outer surface area of which is large, and which can collect airborne particulate matter. In a preferred embodiment, the effective radius of curvature ratio of the second array electrode to the first array electrode is at least 20: 1.

The high voltage pulses generate an electric field between the first and second electrode arrays. This electric field creates an electrokinetic air flow from the first array to the second array, with a greater concentration of negative ions and ozone in the air flow. Ambient air, including dust particles and other undesired constituents, such as microorganisms, enters the housing of the air delivery-conditioning device through the openings of the grille or louvered type, while the clean air that has been ionized is discharged through the openings in the lower side of the housing.

Dust and other particulate matter is electrostatically attracted to the second array (or collector) electrodes and the exhaust air is substantially free of these particulate matter. In addition, the ozone generated by the air delivery-conditioning apparatus may kill certain types of microorganisms or the like, and also remove odors from the discharged air. The conveyor is preferably operated periodically and the operator can control, for example, the output of the high voltage pulse generator to be temporarily increased to more quickly remove odors from the environment.

In the applicant's previous application, a second array of electrode assemblies was provided which was sufficiently robust that it could be removed from the air delivery-conditioning apparatus for cleaning by the user. The second array of electrode assemblies may simply be pulled from the air delivery-conditioning unit, wiped clean with a wet cloth, and then returned to the air delivery-conditioning unit. However, at some point, if the electrode assembly is still wet (due to cleaning) and is returned to the air delivery-conditioning unit, moisture build-up may cause the electrical resistance between the first and second electrode arrays to decrease, thereby creating a high voltage arc.

Another problem is that the wire electrodes in the first electrode array become dirty with time and a layer of deposited or grey matter builds up on them. The species collected on the first array electrode will eventually reduce the ionization efficiency. In addition, the mass layer can cause the air delivery-conditioning unit to generate audible vibrations at 500Hz to 5kHz, which can interfere with people in the same room as the air delivery-conditioning unit.

In a first embodiment of the invention, one or more flexible sheets of mylar or polyimide film material extend under the removable second array electrode assembly. The sheet or sheets are oriented towards the first array electrode and lie nominally in a plane orthogonal to the longitudinal axes of the first and second array electrodes. The material of the sheet has high breakdown voltage and dielectric constant, can resist high temperature and can be deformed. A slot is provided at the end of the sheet at each electrode of the first array so that each wire electrode of the first array fits into the slot of the sheet. When the user removes the second electrode array from the air delivery-conditioning apparatus, the sheet is also removed together. However, during disassembly, the foil is also pulled upwards and the friction between each wire and the inner edge of the surrounding slot can scrape the coating off the first array electrode. When the second array of electrode assemblies is reinserted into the air delivery-conditioning device, the slits in the sheet automatically encircle the electrodes of the corresponding first electrode array. Thus, when the second array electrode assembly is removed from the air delivery-conditioning apparatus or simply moved up and down, an up and down scraping action may occur on the electrodes of the first electrode array.

Alternatively, upwardly projecting posts may be provided on the bottom surface of the interior of the air delivery-conditioning device, which posts may deflect the end of the sheet material upwardly and away from the first array electrode after the second array electrode assembly is fully inserted. This feature reduces the likelihood of the foil itself reducing the resistance between the two electrode arrays.

In a preferred embodiment, the lower end of the second array electrode is mounted on a holder comprising a pivoting arm connected to a sheet of mylar or polyimide film material. Alternatively, two overlapping material sheets are joined. The end of each lamella is provided with a slit, and each lamella (and the slit therein) is arranged to be self-aligned with the corresponding wire electrode. A base extends downwardly from the base of the holder and is inserted into a base opening in the bottom floor of the device when fully inserted into the air delivery-conditioning device. The side wall of the opening of the base facing the first electrode array pushes the pivot arm and the wafer to pivot upward from a horizontal position to a vertical position. This structure can increase the resistance between the electrode arrays.

In another embodiment, a cleaning device for wires in a first electrode array is provided, wherein one or more balls are provided around each wire, and the wire electrodes are passed through the passages of the balls. When the air delivery-conditioning apparatus is turned upside down, the ball slides over the length of the wire around which it surrounds, wiping off the deposits during the sliding. This embodiment using a ball may be used in combination with any or all of the embodiments using various tabs to provide a means for allowing a user to safely clean the wire electrodes of the first electrode array in the air delivery-conditioning apparatus.

It is also evident from a review of the present description that embodiments of the present invention include a ball and ball lift arm operatively associated with the ball and the collection electrode. When the collector electrode is moved for cleaning, the ball lift arms engage the ball to cause the ball to move up the emitter electrode to clean the emitter electrode. When the collector electrode is removed from the housing, the ball lift arms disengage from the ball, allowing the ball to fall to the bottom of the emitter electrode. When the collector electrode is reinserted into the housing, the ball lift arms again engage the ball at the bottom of the emitter.

Fig. 2A and 2B show an electrically powered air delivery-conditioning system 100 having a housing 102 including rear air intake apertures or louvers 104. Additionally, the housing 102 includes an exhaust vent 106 at the front side, and a seat 108. Within the housing is an ionizer 160 that is powered by a power source that can be energized or energized by switch S1. Suitable power sources include, for example, alternating current-direct current (AC: DC) power sources. The ionizer 160 is housed in the housing instead of being exposed to the outside air, and it is not necessary to provide any parts outside the housing for the operation of the present invention, and the external working potential can be saved.

The upper surface of the housing 102 includes a user-liftable handle 112 that is secured to the electrodes 242 of the second array 240 of electrode assemblies 220. The electrode assembly 220 also includes a first electrode array 230, here a single wire or wire-like electrode 232. In the illustrated embodiment, the lifting element 112 (in the form of a handle) enables a user to lift the second array electrode 240 upwardly, if desired out of the device 100, while the first electrode array 230 remains within the device 100. In fig. 2B, when the user moves the handle 112 up or down, the bottom end of the second array of electrodes 242 is connected to the member 113, and the member 113 is connected to a mechanism 500 for cleaning the electrodes of the first electrode array, here the electrodes 232. Further details of various mechanisms 500 are provided in fig. 5A-7E, which will be described later, which mechanisms 500 can clear the wire or wire-like electrode 232 from the first electrode array 230, maintaining a high electrical resistance between the first and second electrode arrays 230, 240 even when moisture collects at the bottom of the interior of the device 100.

The electrodes of the first and second arrays are connected in series between the output terminals of ionizer 160, as shown in fig. 3. The handle 112 can be lifted upward so that the electrodes in the electrode assembly can be easily accessed for cleaning and, if necessary, replacement.

The general shape of the invention shown in fig. 2A and 2B is not important. Other shapes may be used without departing from the scope of the invention. In the preferred embodiment, the height is about 1m from top to bottom, the width is about 15cm from left to right, and the depth is about 10cm from front to back, although other sizes and shapes may be used. The use of the louver structure can provide sufficiently large air intake and exhaust holes in a relatively economical housing structure. There is no real difference between the apertures 104 and 106, except for the different positions relative to the second array electrodes, and indeed the same apertures may be used. These holes ensure that a sufficient amount of ambient air flow is drawn into the apparatus 100 and that a safe amount of ozone-ionized air flow is expelled from the apparatus 100.

When device 100 is energized via switch S1, the high voltage output of ionizer 160 generates ions at the first electrode array, which are adsorbed by the second electrode array, as described below. The ions moving in the "in" to "out" direction carry air molecules, thus electrokinetically producing an output flow of ionized air. The in symbol in fig. 2A and 2B represents the inhaled ambient air with the particulate matter 60, and the out symbol represents the exhausted clean air with the particulate matter substantially removed, wherein the particulate matter is electrostatically adsorbed on the surface of the second array electrode. In the process of generating an ionized air stream, a safe amount of ozone (O3) is advantageously generated. An electrostatic shield may also be provided on the inner surface of the housing 102 to reduce the amount of electromagnetic radiation that is detectable. For example, a metal shield may be provided within the housing, or a portion of the interior of the housing may be painted to reduce such radiation.

As can be seen in fig. 3, ionizer 160 includes a high voltage generating device 170, and circuitry 180 for converting the original ac voltage (e.g., 117V ac) to a dc voltage. Circuitry 180 preferably includes circuitry that controls the shape and/or duty cycle of the generator output voltage (which control is changed by a user via switch S2, as shown at 200). Circuitry 180 also preferably includes a pulse mode element coupled to switch S3 that temporarily increases the ozone output. Circuitry 180 also includes a timing circuit and visual indicators such as Light Emitting Diodes (LEDs). When ions are generated, a light emitting diode or other indicator (including an audible indicator if necessary) emits a signal. After a preset time, for example 30min, the timer may automatically stop the generation of ions and/or ozone and turn off the indicator and/or audible indicator.

As shown in fig. 3, the high voltage generator device 170 includes a low voltage oscillator circuit 190, which may have a frequency of 20kHz, that outputs low voltage pulses to an electronic switch 200, such as a thyristor or the like. The switch 200 switchably connects the low voltage pulse to the input coil of the step-up transformer T1. The secondary winding of T1 is connected to a high voltage multiplier circuit 210 that outputs high voltage pulses. The circuits and components that make up the high voltage pulse generator 170 and the circuit 180 are preferably fabricated on a printed circuit board mounted within the housing 102. If desired, an external sound input (e.g., a signal from a stereo tuner) may be suitably connected to oscillator 190 so that the moving air stream generated by ionizer 160 may be acoustically modulated. This external sound may be an electrostatic loudspeaker whose output air flow is in line with the audible input signal and can be heard by the human ear. In addition, the output air stream still includes ions and ozone.

The high voltage generator 170 preferably produces output pulses of at least 10kV peak-to-peak with an effective dc bias of about half the peak-to-peak voltage value and a frequency of about 20 kHz. The pulse train output preferably has a 10% duty cycle, which improves battery life. Of course other peak-to-peak amplitudes, dc offsets, pulse train waveforms, duty cycles and/or repetition rates may be used. In practice, a 100% pulse sequence (e.g., substantially dc high voltage) may be used, but with a shorter battery life. Thus, the generator device 170 may (but need not) be considered a high voltage pulse generator.

The frequency of oscillation is not particularly critical, but is preferably at least about 20kHz so that it is inaudible to humans. If a pet is present in the room in which the device 100 is installed, a higher operating frequency should be used to prevent the pet from feeling uncomfortable and/or howling. As shown in fig. 5A through 6E, to reduce the likelihood of audible vibration, at least one means for cleaning the electrodes 232 in the first electrode array 230 should be provided.

The output of the high voltage pulse generator device 170 is connected to an electrode assembly 220 comprising a first electrode array 230 and a second electrode array 240. The device 170 functions as a direct current to direct current (DC: DC) high voltage generator, and other circuits and/or techniques may be utilized to output high voltage pulses for input to the electrode assembly 220.

In the embodiment shown in fig. 3, the positive output of the device 170 is connected to a first electrode array 230 and the negative output is connected to a second electrode array 240. This polar connection has been found to work well, minimizing unwanted audible electrode vibration or noise. This creates an electrostatic air flow from the first electrode array to the second electrode array (this flow is indicated by "out" in the figure). Thus, the electrode assembly 220 is installed in the air delivery-conditioning system 100 such that the second electrode array 240 is closer to the "out" hole and the first electrode array 230 is closer to the "in" hole.

When the voltage or pulse of the high voltage pulse generator 170 is connected to the first and second electrode arrays 230 and 240, it can be considered that a plasma-like electric field is generated around the electrodes 232 of the first array 230. This electric field ionizes the ambient air between the first and second electrode arrays and creates an "outgoing" air flow moving toward the second array. It will be appreciated that the "in" air flow enters through aperture 104 and the "out" air flow exits through aperture 106.

The first array electrodes 232 are believed to produce ozone and ions simultaneously, substantially as a function of the potential of the generator 170 connected to the first array. Increasing or decreasing the potential of the first array may increase or decrease the occurrence of ozone. Connecting a potential of opposite polarity to the second array electrodes 242 can essentially accelerate the movement of ions generated by the first array, producing the "out" air flow shown in the figure. As the ions move towards the second array, they can be considered to push the air molecules towards the second array. Decreasing the potential of the second array relative to the first array increases the relative speed of this motion.

For example, if a potential of +10kV is applied to the first array electrode, but no potential is applied to the second array electrode, then many ions (whose net charge is positive) will form near the first electrode array. In addition, the higher +10kV potential generates a large amount of ozone. By connecting a relatively negative potential to the second array electrodes, the velocity of the air stream driven by the emitted ions is increased as the momentum of the moving ions is preserved.

On the other hand, if one wants to maintain the same effective output ("out") rate but produce less ozone, one could split the exemplary 10kV potential between the electrode arrays. For example, the generator 170 may provide +4kV (or other amount) to the first array electrodes and-6 kV (or other amount) to the second array electrodes. In this example, +4kV and-6 kV were measured with respect to ground. So that the apparatus 100 can output a safe amount of ozone. Thus, the high voltage may preferably be applied to the first array electrode at about +4kV and the second array electrode at about-6 kV.

As mentioned above, the output stream(s) preferably include a safe amount of ozone that destroys or at least substantially alters bacteria, microorganisms and other living (or similarly living) substances in the output stream. Thus, when switch S1 is on and B1 has sufficient operating potential, the pulsing of the high voltage pulse generator device 170 produces an output flow (out) of ionized air and ozone. When S1 is turned on, the led will emit a visual signal when ionization occurs.

The operating parameters of the apparatus 100 are preferably set during manufacture and cannot be adjusted by the user. For example, increasing the peak-to-peak output voltage and/or duty cycle of the high voltage pulses generated by the device 170 may increase the air flow rate, ion content, and ozone content. In one embodiment, the output flow rate is about 200 feet per minute, the ion content is about 2,000,000 per milliliter, and the ozone content is about 40ppb (relative to ambient) to about 2,000ppb (relative to ambient). Reducing the ratio of R2/R1 below about 20: 1 reduces the peak-to-peak voltage and/or duty cycle of the high voltage pulses between the first and second electrode arrays, thereby reducing the flow rate.

In practice, the device 100 is placed in a room and connected to a suitable operating power supply, typically 117 vac. Upon actuation of switch S1, ionizer 160 emits ionized air and some ozone through exhaust vents 150. The air stream with ions and ozone purifies the air in the room, and the ozone can advantageously remove or at least reduce unwanted certain odors, bacteria, microorganisms and the like. The air flow is in fact generated electrically, since there are no moving parts within the device 100 (as mentioned above there may be some mechanical vibrations within the electrodes). As illustrated in fig. 4A, it is desirable that the device 100 actually output more negative ions, which are more beneficial to human health than positive ions.

Having generally described various aspects of the present invention, a preferred embodiment of the electrode assembly 220 is described below. In various embodiments, the electrode assembly 220 includes: a first array 230 having at least one electrode 232, and a first array 240 having at least one electrode 242. It will be appreciated that the material of the electrodes 232 and 242 should be electrically conductive, capable of withstanding the corrosive effects of high voltage, and sufficiently robust to permit cleaning.

In each of the electrode assemblies described herein, the electrodes 232 in the first electrode array 230 are preferably made of tungsten. Tungsten is strong enough to withstand cleaning, has a high melting point to retard breakdown due to ionization, and has a rough outer surface to promote effective ionization. On the other hand, the outer surface of the electrode 242 is preferably sufficiently smooth to minimize undesirable point-to-point radiation. Accordingly, the electrodes 242 are preferably made of stainless steel, brass, and other materials. The polished surface of the electrode 232 also enables the electrode to be easily cleaned.

The electrodes 232 and 242 used in the apparatus 100 are lighter in weight, easier to manufacture, and suitable for mass production than the prior art electrodes proposed by Lee. In addition, the electrodes 232 and 242 described herein may more efficiently produce ionized air and safe amounts of ozone.

In the apparatus 100, a high voltage pulse generator 170 is connected between a first electrode array 230 and a second electrode array 240. The high voltage pulse creates an ionized air stream that moves from the first array toward the second array (here indicated by the open arrows). Thus, electrode 232 may be considered to be the escape electrode, while electrode 242 may be considered to be the collection electrode. This output stream advantageously contains a safe amount of ozone and is discharged from the orifice 106 of the apparatus 100.

The positive output terminal or port of the high voltage pulse generator is preferably connected to electrode 232 and the negative output terminal or port is preferably connected to electrode 242. It is considered that the emitted ions have a positive polarity, that is, more positive ions are emitted than negative ions. In any event, the preferred electrode assembly electrical connections minimize audible noise generated by the electrodes 232 as compared to the opposite polarity case (i.e., the positive and negative output connections are interchanged).

However, while the generation of positive ions may result in a relatively quiet air flow, from a health perspective, the output air flow should contain more negative ions than positive ions. It should be noted, however, that in some embodiments, one port of the high voltage pulse generator (preferably the negative port) is actually in ambient air. Thus, the electrodes in the second array do not have to be connected to the high voltage pulse generator by a metal wire. In this case, however, an "active connection" is formed between the second array electrode and an output port of the high voltage pulse generator by the external air.

Turning now to the embodiment shown in fig. 4A and 4B, the electrode assembly 220 includes a first array 230 having wire electrodes 232, and a second array 240 having generally U-shaped electrodes 242. The number of electrodes N1 making up the first array and the number of electrodes N2 making up the second array may be different. In the various embodiments shown, N2 > N1. However, additional first electrodes 232 may be added at the outer ends of the array 230 in FIG. 4A if desired, such that N1 > N2, i.e., 5 electrodes 232 versus 4 electrodes 242.

The length of electrode 232 is preferably the length of the tungsten wire and electrode 242 is formed from a metal plate, preferably stainless steel, although brass or other metal plates may be used. The metal plate is susceptible to forming side regions 244 and bulbous protrusion regions 246 to form hollow elongated U-shaped electrodes 242. Although 4 electrodes 242 in the second array 240 and 3 electrodes 232 in the first array 230 are shown in fig. 4A, other numbers of electrodes may be used in each array, preferably maintaining a symmetrical staggered shape as shown. As can be seen in fig. 4A, although the incoming ("in") air contains particulate matter 60, the outgoing ("out") air is substantially free of particulate matter, which is adsorbed onto a larger surface area of the second array electrode (as shown in fig. 4B).

As can be seen in fig. 4B, the spaced apart shapes of the arrays are staggered so that each electrode 232 of the first array is equidistant from the electrodes 242 of the two second arrays. This symmetrical staggered arrangement has been found to be a particularly effective electrode arrangement. Preferably, the staggered shape is symmetrical, with adjacent electrodes 232 or 242 being spaced apart by fixed distances Y1 and Y2, respectively. However, an asymmetric shape may be used, but the ion emission and air flow are reduced. In addition, it is understood that the number of electrodes 232 and 242 may vary from that shown.

In fig. 4A, the dimensions generally employed are as follows: the diameter of the electrodes 232 is about 0.08mm, the spacings Y1 and Y2 are each about 16mm, the spacing X1 is about 16mm, the distance L is about 20mm, and the electrode heights Z1 and Z2 are each about 1 m. The width W of the electrodes 242 is preferably 4mm, and the thickness of the material from which the electrodes 242 are made is about 0.5 mm. Of course, other sizes and shapes may be used. The diameter of the electrode 232 is preferably small to help create the desired high voltage electric field. On the other hand, it is desirable that the electrodes 232 (and 242) be sufficiently robust, regardless of diameter, to withstand occasional cleaning.

The electrodes 232 in the first array 230 are connected by a conductor 234 to a first output port (preferably positive) of the high voltage pulse generator 170 and the electrodes 242 in the second array 240 are connected by a conductor 244 to a second output port (preferably negative) of the generator 170. One skilled in the art will recognize that other locations for each electrode may be used for electrical connection with conductors 234 or 244. Thus, in FIG. 4B, the conductor 244 is shown connected to the interior of the bulbous end portion 246 of some of the electrodes 242, while in other ones of the electrodes 242 it is connected to the conductor 244 elsewhere. The electrical connections of the individual electrodes 242 may also be attached to the outer surface of the electrodes so long as the output air flow is not significantly affected.

To facilitate removal of the electrode assembly from the device 100 (as shown in fig. 2B), the lower end of each electrode may be configured to engage a mating portion of a wire or other conductor 234 or 244. For example, a "cup" may be provided on wire 234 or 244, which may fit into the free end of each electrode when electrode array 220 is fully inserted into housing 102 of device 100.

The ratio of the effective electric field divergence area of electrode 232 to the nearest effective area of electrode 242 is at least about 15: 1, and preferably at least 20: 1. Thus, in the embodiment shown in FIGS. 4A and 4B, the ratio R2/R1 is about 2mm/0.04mm, which is about 50: 1. Other ratios may be used without departing from the scope of the invention.

In this and other embodiments described herein, ionization occurs at the small electrodes 232 of the first electrode array 230, and ozone generation varies with the high voltage arc. For example, increasing the peak-to-peak voltage amplitude and/or duty cycle of the pulses generated by the high voltage pulse generator 170 may increase the ozone content in the output stream of ionized air. If necessary, the user can use S2 to change (in a safe manner) the amplitude and/or duty cycle to change the ozone content to some extent. Specialized circuitry is known in the art to accomplish such control and need not be described in detail herein.

It should be noted that at least one output control electrode 243 is included in fig. 4A and 4B, which is preferably electrically connected at the same potential as the second array of electrodes. Preferably, the electrodes 242 have a pointed shape on the sides, such as a triangle. The sharp point of the electrode 243 results in the generation of a large number of negative ions (because the electrode is connected to a relatively negative high potential). These negative ions neutralize the excess positive ions, and the remaining negative ions appear in the output air stream, causing the "out" air stream to have a negative charge. The electrode 243 is preferably stainless steel, copper or other conductor and may have a base 20mm high and about 12mm wide.

Another advantage of having sharp electrodes 243 is that they may be fixedly mounted within the housing of the device 100 and thus not readily accessible to a person's hand when cleaning the device. If not, the sharp point on the electrode 243 can easily scratch the user. It has been found that having only one electrode 243 is sufficient to provide a sufficient amount of negative ion output, but more such electrodes may be used.

In the embodiment shown in fig. 4A and 4C, each U-shaped electrode 242 has two trailing edges that promote efficient motion transfer of the ionized air and ozone output streams. At least one cusp electrode area 243' should be included at a location on the trailing edge. The electrode region 243' facilitates the generation of negative ions in the same manner as described in connection with fig. 4A and 4B. However, when the electrodes 242 are wiped with a cloth or other object to remove particulate matter accumulated on the electrodes, the sharp portion is likely to scratch the user. In fig. 4C and subsequent figures, the particulate matter is omitted for clarity. However, as can be seen from fig. 2A to 4B, particulate matter is contained in the introduced air, whereas the particles are substantially absent in the discharged air. As described above, the particulate matter 60 is electrostatically deposited on the surface area of the electrode 242. As shown in fig. 4C, it is relatively less important at which position in the electrode array the electrical connection is made. Thus, as shown, the first array electrodes 232 are connected at their bottom regions, while the second array electrodes 242 are connected at their middle regions. Both arrays may be connected in more than one area, for example at the top and bottom. This may provide minimal obstruction to airflow movement when metal wires, ribbons or other internal connecting members are employed on the top or bottom or perimeter of the second array electrodes 242.

The embodiment shown in fig. 4C and 4D shows electrode 242 with a portion cut away. In the embodiment of fig. 4B the length L is about 20mm, in fig. 4C L is reduced to about 8 mm. The other dimensions in fig. 4C are the same as those in fig. 4A and 4B. In fig. 4C and 4D, the provision of a cusp region 246 at the trailing edge of the electrode 243 promotes more efficient generation of the ionized air stream. It will be appreciated that the second electrode array 240 shown in figure 4C is more structurally robust than the second electrode array 240 shown in figures 4A and 4B due to the shorter trailing edge. As mentioned above, the first and second electrode arrays in fig. 4C should also take a symmetrically staggered shape.

In the embodiment shown in FIG. 4D, the outermost second electrodes 242-1 and 242-2 have substantially no outermost trailing edges. Dimension L in fig. 4D is preferably about 3mm, and the other dimensions are the same as described in fig. 4A and 4B. In addition, the ratio R2/R1 of the embodiment shown in FIG. 4D should preferably exceed 20: 1.

Fig. 4E and 4F show another embodiment of an electrode assembly 220 in which a first electrode array includes a single wire electrode 232 and a second electrode array includes a pair of single L-shaped curved electrodes 242. Generally, the dimensions differ from the above embodiment by about 12mm for X1, about 6mm for Y1, about 5mm for Y2, and about 3mm for L1. The effective ratio R2/R1 is still greater than about 20: 1. The fewer electrodes making up assembly 220 in fig. 4E and 4F make the structure economical and also easier to clean, although more than one electrode 232 and two electrodes 242 may be used. This embodiment still employs the staggered symmetrical arrangement described above, with the electrodes 232 being equidistant from the two electrodes 242.

Turning to FIG. 5A, a first embodiment of an electrode cleaning apparatus 500 is shown. In the illustrated embodiment, the device 500 includes a flexible sheet 515 made of an insulating material, such as polyester or polyamide film (e.g., Mylar available from Dupont, Inc.)^Or Kapton^) And other high pressure and high temperature resistant materials, and the thickness of the thin sheet can be about 0.1 mm. One end of the sheet 500 is attached to a substrate or other member 113 that is secured to the lower end of the second electrode array 240. The tabs 500 extend or protrude from the base 113 toward the first electrode array 230. In fig. 5A the sheet 500 extends a total length sufficient to span the distance between the substrate 113 of the second array 240 and the electrodes 232 of the first array 230. This span depends on the shape of the electrode array, but is typically on the order of a few inches. Preferably, the ends of the sheet 500 extendExtending slightly beyond the electrode 232 and may exceed 0.5 inches. As shown in fig. 5A and 5C, a slit 510 is provided at the end of the sheet 500, for example, at a position corresponding to the electrode 232 near one end of the electrode 232. The inward end of the slit is preferably formed as a small circle 520 to enhance flexibility.

The shape of the sheet or strip 515 and slots 510 of the electrode cleaning mechanism 500 is such that each wire or wire-like electrode 232 in the first electrode array 230 and the corresponding slot 510 grip and frictionally engage. As shown in fig. 5A and 5C, instead of a unitary sheet 500 having a plurality of slots 510, a single sheet or strip 515 of cleaning mechanism 500 may be provided, each sheet or strip having a slot 510 at its end, which may surround an associated wire electrode 232. As shown in fig. 5B and 5C, the cleaning mechanism 500 or sheet or strip 515 may be provided with holes 119 that may be connected to pegs 117 extending from the base portion 113 of the second electrode array 240. Other attachment means may of course be used, such as glue, double sided tape, insertion of the sheet into a horizontal slot or protrusion on the substrate 113 towards the side of the array 240, etc.

In fig. 5A, the second electrode array 240 is shown in the process of being moved upward, and the user can remove the array 240 and remove particulate matter from the surface of the electrodes 242. As the array 240 moves up (or down), the cleaning mechanism 500 for the sheet or strip 515 also moves up (or down). Vertical movement of the array 240 causes vertical movement in the cleaning mechanism 500 or the sheet or strip 515 so that the outer surfaces of the electrodes 232 wipe over the inner surfaces of the corresponding slots 510. For example, FIG. 5 shows a deposit 612 (represented by the symbol "x") on metal line 232 above sheet 500. As the array 240 and cleaning mechanism 500 move upward, the deposits 612 are wiped off the wire electrodes and fall off (they are evaporated or collected as particulate matter when the device is again assembled and turned on). Thus, in FIG. 5A, the outer surface of the electrode 232 below the cleaning mechanism 500 is cleaner than the surface of the same electrode above the cleaning mechanism 500 because the wiping action has not yet occurred.

When the user hears too much noise from the device 100, the user simply turns off the device, slides the array 240 (and the cleaning mechanism 500 or sheet or strip 515) up and down (as shown by the up/down arrows in figure 5A), and wipes the wire electrodes of the first electrode array. This method does not damage the wire electrode and allows the user to clean it as desired.

As before, the user may remove the second electrode array for cleaning (while removing the sheet 500, which wipes the electrodes 232 in an upward vertical path of movement). If the user cleans the electrodes 242 with water and installs the second array 240 back into the device 100 without being completely dry, moisture may form on the upper surface of the horizontally disposed piece 550 in the device 100. Therefore, as shown in FIG. 5B, an upwardly projecting blade 560 is preferably provided adjacent the base of each electrode 232. Thus, when the array 240 is fully inserted into the device 100, the ends of the cleaning mechanism 500, preferably the sheet or strip 515, are bent upward. When the cleaning mechanism 500 or the sheet or strip 515 forms an angle θ of about 90 °, the angle θ increases, approaching 0 °, as the substrate 113 is fully inserted into the apparatus 100, e.g., the sheet extends nearly vertically upward. If desired, a portion of the cleaning mechanism 500 or sheet or strip 515 may be made stiffer by laminating two or more layers of a suitable mylar or other similar material. For example, the ends of the sheet or strip 515 in FIG. 5B may be one thick layer, while sheets or strips about half the length of the electrode 242 may be made stiffer by laminating one or two layers of polyester or similar material.

The inclusion of a protruding blade 560 in the shape shown in fig. 5B advantageously prevents physical contact between the cleaning mechanism 500 or the sheet or strip 515 and the electrode 232. A high ohmic impedance is maintained between the first and second electrode arrays 230, 240. In the embodiment shown in fig. 6A through 6D, the cleaning mechanism 500 or sheet or strip 515 can be pivoted to be substantially parallel to the electrodes 232 to help maintain a high impedance between the first and second electrode arrays. In fig. 5B the slit ends of the cleaning mechanism 500 or sheet or strip 515 are deflected upward, forming an air gap 513.

In fig. 6A, the lower edge of the second array electrode 242 is fixed by the base 133, the base 113 extends from the arm 677, and the arm 677 is pivotable about the pivot 687. The shaft 687 may bias the arm 677 in a horizontal position such that θ is approximately 90 °. The arms 645 extend from the longitudinal axis of the base 113 and help self-align the base 113 within the openings 655 in the members 550, as will be described below. The base 113 and the arms 677 are preferably made of a material having high voltage breakdown performance and high temperature resistance. Ceramic materials are preferred (if cost and weight are not a concern), but some plastics may be used. The unattached end of each arm 677 extends from Mylar, polyimide film (e.g., Mylar)^，Kapton^) Or similar material, is formed as a sheet or strip 515, and the ends of the sheet or strip 515 terminate in slots 510. It can be seen that the pivotable arm 677 and the sheet or strip 515 are arranged such that each slit 510 is aligned with a wire or wire-like electrode 232 in the first array 230. The electrodes 232 preferably extend from brackets 627 on the base 550, and the base 550 is located on feet 565 at the bottom of the housing of the air delivery-conditioning unit. To further maintain high impedance between the first and second electrode arrays, the base 550 preferably includes a blocking wall 665 and upwardly extending leaves 675. The vane 675, shelf 627 and barrier 665 extend upwardly about 1 inch or so and are formed integrally, for example by casting, from a material having a high breakdown voltage and capable of withstanding high temperatures, such as ceramic or some plastic, depending on the shape of the two electrodes. As shown in FIG. 6A, the base 550 includes an opening 655 sized to receive a lower portion of the second electrode array substrate 113. In fig. 6A and 6B, arm 677 and tab 515 can be pivoted from base 113 about axis 687 to a position in which θ is about 90. In this position, the electrodes 232 are in the slots 510 on the end of each sheet 515.

Assuming that the user has completely removed the second electrode array 240 from the air delivery-conditioning apparatus and cleaned it is shown in fig. 6A and 6B that the array 240 is reinserted into the apparatus. When a user inserts the array 240 into the apparatus 100, a coil spring or other biasing member associated with the pivot 687 urges the arm 677 to a position at an angle θ of approximately 90 °. The side bumps 645 can help properly align the substrate 113 so that each wire or wire-like electrode 232 is received in the slot 510 of the sheet or strip 515 on the arm 677. When a user slides the array 240 downward and into the device 100, a wiping action occurs between the sides of the slot 510 of the sheet or strip 515 and the outer surfaces of the electrodes 232 substantially sandwiched within the slot. This rubbing helps to remove deposits formed on the surface of the electrode 232. The user can move the array 240 up and down to further clean the electrode 232 of deposits formed on the surface.

In fig. 6C, the user slides the array 240 downward, almost completely into the device 100. In the illustrated embodiment, when the lower portion of the base 232 is about 1 inch above the surface of the base 550, the upper edge of the vane 675 encounters the lower surface of the reach arm 677. In this way, arm 677 and the attached slotted tab or strip 515 pivot about axis 687 such that angle θ is reduced. In the position shown in fig. 6C, θ is about 45 °, and the slits of the sheet 515 are no longer in contact with the corresponding electrodes 232.

In FIG. 6D, the user has pushed the array 240 completely downward into the air delivery-conditioning apparatus 100. In this position, as the bottommost portion of the base 113 begins to enter the opening 655 of the base 550 (see FIG. 6A), contact between the base 113 and the inner wall 657 of the base 550 urges each arm 677 to pivot fully upward, e.g., θ is about 0. Thus, in FIG. 6D, which shows the fully inserted state, each slot electrode cleaner 515 is rotated upward and parallel to the corresponding electrode 232. In this way, neither arm 677 nor member 515 reduces the impedance between the first and second electrode arrays 230, 240. In addition, the vane 675 and the blocking wall 665 can also increase resistance.

Thus, the embodiment shown in FIGS. 5A to 6D shows another structure of the cleaning device for the metal wire or the wire-like electrode in the air transporting-conditioning apparatus.

Turning to fig. 7A through 7E, various ball cleaning devices are shown that can clean deposits from the outer surface of the wire electrode 232 of the first electrode array 230 of the air delivery-conditioning apparatus. In fig. 7A, a symmetrical ball 600 is shown around wire electrode 232, with wire electrode 232 threaded into passage 610 when the first electrode array is manufactured. The globe 600 is made of a material resistant to high temperature and high pressure and is not easily burned, such as ceramic or glass. Although metal spheres may also be used, conductive spheres may slightly reduce the impedance between the first and second arrays, for example due to the radius of the metal spheres. In fig. 7A, the deposit on electrode 232 is indicated by the symbol "x", and ball 600 moves relative to wire electrode 232 in the direction indicated by the arrow. This movement is caused by the user flipping the device 100, for example, by placing the upper portion of the device downward. As the ball 600 slides in the direction of the arrow, the deposits 612 are wiped off and cleaned by the inner walls of the channel 610. The scraped-off deposits are finally collected at the bottom in the air transporting-conditioning apparatus. These deposits have broken up, evaporated as the apparatus is used, or have collected as particulate matter on the surface of the electrodes 242. If the nominal diameter of wire 232 is 0.1mm, the diameter of channel 610 may be several times larger, such as on the order of 0.8mm, although larger or smaller dimensions may also be used. The ball 600 need not be circular and may be cylindrical, as shown by ball 600' in fig. 7A. The diameter of the circular ball may be in the range of 0.3 to 0.5 inches. The cylindrical ball may be 0.3 inches in diameter and about 0.5 inches in height, although other dimensions may be used.

As shown in fig. 7A, more than one ball 600, 600' may be strung on the electrode 232. Alternatively, as shown in figures 7B to 7D, the ball may have other different channel shapes. It should be noted that although it is most convenient to make the channels 610 with a circular cross-section, the cross-section may in fact be made non-circular, such as triangular, square or irregular, etc.

Fig. 7B shows a ball similar to that of fig. 7A, but with the channel 610 off-center, so that the ball is asymmetric. The eccentric channel has mechanical momentum when the ball slides up and down, can slightly tension the electrode 232, and can improve cleaning performance. For ease of illustration, the deposits on the wire or wire-like electrode 232, or wiped off the electrode 232, are not shown in fig. 7B to 7E. In the embodiment shown in fig. 7C, the channel 610 is substantially centered in the ball 600 but slightly angled to provide a different frictional cleaning effect. In the embodiment shown in fig. 7D, ball 600 is both off-center and tilted so that it has a different frictional cleaning effect. In general, an asymmetric channel or via shape should be employed.

In the embodiment of fig. 7E, a ball 620 having a bell-shaped wall may be shaped and sized to mate with a post 550 attached to a bottom horizontal portion 560 within the device 100. The post 550 holds the lower end of the wire or wire-like electrode 232 and the electrode 232 passes through a passage 630 of a ball 620 and, if desired, through a passage 610 of another ball 600. Ball 600 in fig. 7E is shown in phantom to indicate that it is optional.

As the ball 600 slides up and down the length of the electrode, such as when a user flips the device 100, the frictional forces between the deposits 612 on the electrode 232 and the opening of the channel 630 can clean the electrode 232 of the deposits. It will be appreciated that each electrode 232 has its own sphere, some of which may have symmetrical channels, while others may have asymmetrical channels. An advantage of the shape shown in fig. 7E is that the air gap between the spheres 620 can increase the breakdown resistance when the device 100 is in use, such as when the spheres 620 surround the struts 550, particularly when the spheres 620 are made of glass, ceramic, or other high pressure, high temperature breakdown material that does not easily burn. The air gap between the outer surface of the struts 550 and the inner surface of the bell-shaped bulb 620 may increase the resistance to high voltage breakdown or arcing and charring.

Turning now to another embodiment of the present invention, in FIG. 8A, a side view of a cleaning mechanism 500 is depicted. In the preferred embodiment, the cleaning mechanism 500 includes a protruding ball lift arm 677 that extends in a horizontal position from the longitudinal axis of the collecting electrode base 113. The ball lift arm 677 includes a distal end 679 that is forked with two prongs extending on each side of the emitter or first electrode 232 (fig. 8C). Because cleaning is accomplished with the ball 600 as described below, unlike other embodiments, the two prongs of the distal end 679 do not engage the electrode 232. Preferably, the ball lift arms 677 are made of an insulating material or other high voltage, high temperature breakdown resistant material. For example, ABS plastic can be used to form the ball lift arms 677.

In a preferred embodiment, the ball lift arms 677 are constructed such that they are mounted underneath the ball 600 with the collection electrodes 242 fully seated in the unit 100 shown in FIG. 8B. When the electrode 242 is removed from the device 100, the ball lift arms 677 lift the ball 600 up the length of the electrode 232, off the cradle or electrode bottom end stop 627. It is understood that one skilled in the art may make various shapes and configurations for the ball 600 depicted in the figures without departing from the scope of the present invention. For example, the location of the ball 600 with respect to the aperture may take on various configurations as shown in FIG. 7. Similarly, as to shape, the ball apertures may be spherical, hemispherical, square, rectangular, or various other shapes without departing from the scope of the invention as described. Additionally, the ball 600 may be constructed of various materials as previously described.

Turning now to fig. 8B, electrodes 242 are shown installed within device 100. In this embodiment, a ball lift arm 677 is pivotally mounted to the base 113 of the collection electrode 242 at pivot 687. The end 681 of the ball lift arm 622 has a spring 802 attached thereto. The other end of the spring 802 is connected to a bracket 804 that extends below the collecting electrode 242. The ball lift arms 677 are thus able to deflect when the electrodes 242 are removed from the housing 102. The spring 802 has sufficient stiffness to lift the ball 600 along the surface of the electrode 232 when the electrode 242 is removed from the housing 102. Those skilled in the art will appreciate that the ball need not be lifted the entire length of the electrode 242, but should be lifted along the length of the electrode 242 to allow the electrode to function adequately as designed.

The embodiment of the invention described in fig. 8A, 8B and 8C operates as follows. With the electrode 242 in the down or operating position, the base 113 of the electrode 242 is mounted behind the blocking wall 665 as shown in FIG. 8B. To reach this position, ball lift arms 677 pivot about pivot points 687 and, likewise, are deflected about ball 600 for placement under ball 600, as shown in fig. 8A and 8B. Once the lift arm 677 has been deflected so that it is pushed around and under the ball 600, the lift arm 677 returns to a horizontal position, as shown in fig. 8A and 8B, below the ball ready to lift the ball 600.

When it is desired to clean the electrodes, the collecting electrodes 242 are lifted from the housing. When this is done, ball lift arms 677 lift ball 600 from the position of fig. 8A and 8B to the top of emitter electrodes 232, thereby cleaning the emitter electrodes as the ball is lifted. Once the ball is raised on top of the emitter electrodes 232, the lift arms 677 are deflected about the ball 600 while the ball lift arms 677 are deflected about the pivot points 687. When this occurs, the ball 600 is released from the lift arms 677 and the collection electrodes 242 are completely removed from the housing. The ball then drops to the bottom of the emitter electrode 232 and contacts the bracket 627 where it is stopped until it again engages the ball lift arms 677. After the electrodes 242 are cleaned, e.g., wiped with a cloth, the electrodes 242 are reinserted into the housing and the bottom 113 of the electrodes 242 again approaches the blocking wall 665. When this occurs, the ball lift arms 677 again deflect around the ball 600 so that they are between the ball 600 and the bracket 627, and the preparer again lifts the ball 600 upward when the collection electrode 242 is again removed from the housing for cleaning of the electrode. It will be appreciated that ball 600 operates in the same manner as the operation in fig. 7A-7E to clean the emitter.

In an alternative embodiment, the lift arms 677 themselves actually engage and clean the emitter electrodes 232, as described in other embodiments. In this configuration, the lift arms 677 can also be configured with the distal ends of the arms 677 in FIG. 6A and the distal ends of the arms 515 in FIG. 5C. In these embodiments, the distal end of the arm 677 engages and cleans the emitter electrode 232 and lifts the ball, which also cleans the emitter electrode. In these alternative embodiments, the arms must be strong enough to allow cleaning of the electrodes, yet able to lift the weight of the ball 600.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and description. But is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is evident that many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use contemplated. The scope of the invention is to be determined by the following claims and their equivalents.

Claims

1. In an air cleaner having at least one first emitter and at least one first collector electrode, the improvement comprising:

a ball having a hole therethrough, the first emitter passing through the hole; and

a ball moving arm disposed within the air cleaner and operatively associated with the ball for moving the ball relative to the first emitter to clean the first emitter.

2. An air cleaner according to claim 1 wherein:

the first collecting electrode is removable from the air cleaner for cleaning;

wherein the ball moving arm is operatively associated with the first collecting electrode such that when the first collecting electrode is removed from the air cleaner, the ball moving arm moves the ball to clean the first emitter.

3. An air cleaner according to claim 2 comprising:

a housing having a top and a bottom;

wherein the first collecting electrode is removed through the top for cleaning;

wherein the ball moving arm moves the ball toward the top to clean the first emitter when the first collection electrode is moved out of the top.

4. An air cleaner according to claim 1 wherein:

the first emitter has a bottom stop on which a ball can rest when it is at the bottom of the first emitter;

the ball moving arm is movably mounted to the first collector such that by seating the ball on the bottom stop, the ball moving arm can move through and under the ball in preparation for moving the ball to clean the first emitter.

5. An air cleaner according to claim 1 wherein:

the first emitter has a bottom stop on which a ball can rest when the ball is at the bottom of the first emitter;

the ball moving arm is pivotally mounted to the first collector such that by seating the ball on the bottom stop, the ball moving arm can pivot through and under the ball in preparation for moving the ball to clean the first emitter.

6. An air cleaner according to claim 1 wherein:

the ball-moving arm has a distal end including first and second prongs extending therefrom that can be selectively positioned to extend beyond the first emitter such that the first emitter is located between the prongs.

7. An air cleaner according to claim 1 wherein:

the ball moving arm engages the first emitter to clean the first emitter.

8. An air cleaner according to claim 1 wherein:

the ball moving arm is pivotally mounted to the first collector about a pivot and has a first end on one side of the pivot operably engaging the ball and a second end on an opposite side of the pivot engaged with a spring secured to the first collector such that the ball moving arm can be deflected and returned to an initial position by the spring so that the ball moving arm can pivot through and under the ball in preparation for moving the ball to clean the first emitter by seating the ball on the bottom stop.

9. An air cleaner according to claim 3 comprising:

an operation controller mounted on the top of the housing.

10. An electrically powered air delivery-conditioning device, comprising:

a housing having a top and a bottom;

a first electrode array having first electrodes;

a second electrode array having second and third electrodes, wherein the second electrode array is removable through the top of the housing for cleaning;

a high voltage source connected between the first electrode array and the second electrode array;

a ball having an aperture therethrough, wherein a first electrode is disposed through the aperture such that the ball is movable along the first electrode;

a ball lift arm movably connected to the second electrode array and operatively engaged with the ball for moving the ball along the first electrode of the first array when the second electrode array is removed through the top of the housing for cleaning.

11. A method of cleaning an air cleaner including a housing having a top and a bottom, the air cleaner including a first electrode and a second electrode array, balls mounted on the first electrode and a ball moving arm mounted on the second electrode array, comprising the steps of:

removing the second electrode array from the top of the housing;

while moving the ball along the first electrode by the urging of the ball moving arm to clean the first electrode.

12. A method of cleaning an air cleaner having a housing, the air cleaner including a first electrode and a second electrode array, a ball mounted on the first electrode and a ball moving arm mounted on the second electrode array, comprising the steps of:

removing the second electrode array from the housing; and

13. An air cleaner having at least a first electrode and a second electrode, wherein the improvement comprises:

an object having an aperture therethrough, the first electrode being disposed through the aperture;

an object moving arm disposed within the air cleaner and operatively associated with the object to move the object relative to the first electrode to clean the first electrode.

14. An air cleaner according to claim 13 wherein:

the first electrode is removable from the air cleaner for cleaning;

wherein the object moving arm is operatively associated with the second electrode such that when the second electrode is removed from the air cleaner, the object moving arm moves the object to clean the first electrode.

15. An air cleaner according to claim 14 comprising:

a housing having a top and a bottom;

wherein the first electrode is removable through the top for cleaning;

wherein the object moving arm moves the object toward the top to clean the first electrode when the first electrode is moved out through the top.

16. An air cleaner according to claim 13 wherein:

the first electrode has a bottom end stop on which an object can be placed when the object is at the bottom of the first electrode;

the object-moving arm is movably mounted to the first electrode such that by the object resting on the bottom end stop, the object-moving arm is able to move through and under the object in preparation for moving the object to clean the first electrode.

17. An air cleaner according to claim 13 wherein:

the first electrode has a bottom end stop on which an object may be placed when the object is at the bottom of the first electrode;

the object-moving arm is pivotally mounted to the second electrode such that by having the object rest on the bottom-end barrier, the object-moving arm can pivot through and under the object in preparation for moving the object to clean the first electrode.

18. An air cleaner according to claim 13 wherein:

the object-moving arm has a distal end including first and second prongs extending therefrom, the first and second prongs being selectably positionable to extend past the first electrode such that the first electrode is located between the prongs.

19. An air cleaner according to claim 13 wherein:

the object-moving arm engages the first electrode to clean the first electrode.

20. An air cleaner according to claim 13 wherein:

the object moving arm is pivotally mounted to the second electrode about a pivot axis and has a first end on one side of the pivot axis and a second end on an opposite side of the pivot axis, the first end operatively engaging the object and the second end engaging a spring secured to the second electrode such that the object moving arm can be deflected and returned to an initial position by the spring such that the object moving arm can be rotated past and under the object by seating the object on the bottom end stop in preparation for moving the object to clean the first electrode.

21. An air cleaner according to claim 15 comprising:

an operation controller mounted on the top of the housing.

22. An electrically powered air delivery-conditioning device, comprising:

a housing having a top and a bottom;

a first electrode array having first electrodes;

an object having an aperture therethrough, wherein a first electrode is disposed through the aperture such that the object is movable along the first electrode;

an object lift arm movably connected to the second electrode array and operable to engage the object for moving the object along the first electrodes of the first array when the second electrode array is removed through the top of the housing for cleaning.

23. A method of cleaning an air cleaner including a housing having a top and a bottom, the air cleaner including a first electrode and a second electrode array, an object mounted on the first electrode and an object moving arm mounted on the second electrode array, comprising the steps of:

removing the second electrode array from the top of the housing;

simultaneously moving the object along the first electrode by the pushing of the object moving arm to clean the first electrode.

24. A method of cleaning an air cleaner having a housing, the air cleaner including a first electrode and a second electrode array, an object mounted on the first electrode and an object moving arm mounted on the second electrode array, comprising the steps of:

removing the second electrode array from the housing;

25. The air cleaner according to claim 1 comprising a high voltage source in communication between said first collecting electrode and said second collecting electrode, said second collecting electrode comprising two electrodes.

26. The air cleaner according to claim 13 comprising a high voltage source in communication between said first electrode and said second electrode, said second electrode comprising two electrodes.

27. The air cleaner according to claim 1 comprising a high voltage source in communication between said first collecting electrode and said second collecting electrode.

28. The air cleaner according to claim 13 comprising a high voltage source in communication between said first electrode and said second electrode.

29. An electrically powered air delivery-conditioning device, comprising:

a housing;

a first electrode array having at least one wire electrode disposed within the housing;

a second electrode array removably disposed within the housing and having at least two electrodes;

a ball lift arm movably connected to the second electrode array; and

a ball having a hole therethrough, the ball being mounted on the wire electrode such that the wire electrode passes through the hole, wherein friction between the hole and the wire electrode cleans the wire electrode, wherein the ball lift arm is capable of engaging and moving the ball, and wherein the wire electrode is cleaned when the ball is moved by the ball lift arm.

30. The electrically powered air delivery-conditioning unit of claim 29, wherein said arm is a cleaning arm.

31. The motorized air delivery-conditioning unit of claim 29, wherein said arm comprises a strip of resilient electrically insulating material that is selectively engageable with the wire-like electrode.

32. The motorized air delivery-conditioning unit of claim 31, wherein the strip has at least one characteristic selected from the group consisting of: (a) the strip comprises a polyamide film. (b) The strip comprises a polyester film. (c) The strip comprises a high pressure resistant, high temperature resistant, puncture resistant material.

33. An electrically powered air delivery-conditioning device, comprising:

a housing;

a second electrode array movably disposed within the housing, having a base element and including at least two electrodes;

a ball lift arm connected to the base element,

a ball having a hole therethrough such that the wire electrode passes through the hole, wherein friction between an inner surface of the hole and the wire electrode cleans the wire electrode, wherein the ball lift arm is capable of engaging and moving the ball, and wherein the wire electrode is cleaned when the ball is moved by the ball lift arm.

34. The electrically powered air delivery-conditioning device of claim 33, wherein said arm comprises a strip of resilient electrically insulating material that is selectively engageable with said wire-like electrode.

35. The electrically powered air delivery-conditioning unit of claim 34, wherein the strip has at least one characteristic selected from the group consisting of: (a) the strip comprises a polyamide film, (b) the strip comprises a polyester film, and (c) the strip comprises a high pressure, high temperature, puncture resistant material.