The present invention discloses an electrostatic air cleaner, comprising an upper filter screen, an electrode a, a tungsten wire, a spring, a main body, an ionization generator, a lower filter screen, an electrode b and an electrode c. The main body is a hollow structure, and the upper end of the main body is buckled with the upper filer screen and the lower end of the main body is buckled with a lower filter screen. A tungsten wire fixed at the upper end of the main body is provided at the inner side of the upper filter screen and the both ends of the tungsten wire are respectively connected with a spring, and the tungsten wire is tensioned by the spring to prevent sagging or deformation, wherein one spring is hitched on the electrode a, the electrode a is fixed on the upper end of the main body, and the main body is provided with an ionization generator. The ionization generator is disposed on the lower side of the tungsten wire and connected to the tungsten wire; the lower end of the main body is further provided with an electrode b and an electrode c arranged side by side. The electrode b and electrode c are connected to the ionization generator and disposed at the upper side of the lower filter screen. Its structure is simple and scientific, convenient to use, without consumables and replacing parts, with low cost and energy saving, good cleaning effect. Therefore, the invention can meet the market demands and it is worthy of promotion in the markets.

The present invention relates to a filter apparatus (1) for dedusting gas comprising one or more electrostatic precipitators (100), in each of said electrostatic precipitators (100) there being inserted at least one filtering unit (300) comprising, in turn, a plurality of filtering cells (301), e.g. of the wall flow type. The present invention also relates to a dedusting process for treating industrial gas. In particular, the dedusting process according to the present invention implemented by the filter apparatus having improved dusting efficiency, which is the object of the present invention, allows the treatment of gas coming from industrial processes, such as coal boilers, cement works, incinerators and like.

Disclosed is a dust collection assembly (100), comprising a first annular ring (110), a second annular ring (120), an insulated spacer assembly (130) and an air guide (220), wherein the second annular ring (120) is arranged below the first annular ring (110); the insulated spacer assembly (130) is arranged between the first annular ring (110) and the second annular ring (120), so that the first annular ring (110) is spaced apart from the second annular ring (120); the air guide (220) is formed as annular and sheathed outside the first annular ring (110) and/or the second annular ring (120); the air guide (220) is connected in a snap-fit with the first annular ring (110) and/or the second annular ring (120); and the external diameter of the upper end of the air guide (220) is greater than that of the lower end thereof. Further disclosed are an air purification device and an air conditioner comprising the dust collection assembly (100).

The invention relates to a system comprising a discharge electrode assembly, the system being for an electrostatic precipitator unit. The discharge electrode assembly comprises a discharge electrode to be electrically connected to an associated high voltage generator via an insulator. The connection is established via a connector pin and an insulator connector. The parts comprise a number of mutually engageable locking surfaces designed to prevent mutual translational and rotational movement of the parts. The invention also relates to an electrostatic precipitator unit comprising such a system. The discharge electrode assembly is designed so that it is easier to assemble and arrange correctly in a flow passage of a flue gas passageway than what is known from prior art. In particular, it is designed to provide a lower risk of misalignment of the discharge electrode with respect to the flue gas passage than what is known from prior art.

A commercial cooking equipment exhaust hood system includes a hood structure including an inlet opening to an exhaust flow path through the hood. A filter unit is positioned along the exhaust flow path. An electrostatic precipitator unit is downstream of the filter unit. The electrostatic precipitator includes an ionizing section upstream of a collecting section. The ionizing section includes a plurality of ionizing flow paths having side profile patterns that vary in width between at least one wide section and at least one narrow section. The collecting section includes a plurality of collecting flow paths with side profile patterns of substantially uniform width and a repeating undulating side profile pattern. A UV light source may also be provided within the hood, with a controller operatively connected to control the UV light source via a dimmer to enable selective production various UV levels.

An ion filtration air cleaning device for cleaning air by use of electrostatic ion attraction. Air having suspended particles is drawn into the device through an inlet by a fan. An ionization source near the inlet generates ions. Electrical charge transfers from the ions to the suspended particles. The fan pushes the air and suspended charged particles toward an outlet. A filter located adjacent to the outlet operates by electrostatic attraction and filters the charged particles from the air, allowing cleansed air to be released from the device, with a reduced level of charged particle emission

The present invention includes a device, a system, and a method for enhancing a particle separation efficiency, including a particle charging device adapted to impart predominately unipolar charging on a plurality of particles in a fluid stream, e.g. a gas stream; wherein the particle charging device is positioned upstream from and adapted to provide the plurality of particles charged by the particle charging device to a particle deflection device capable of separating the particles charged by the particle charging device from a core fluid flow that is substantially free of dust particles.

A method for filtering air includes: passing air through a prefilter disposed in a housing to remove at least a portion of particulates suspended in the air to thereby create prefiltered air; passing the prefiltered air by an ionizer disposed in the housing to ionize at least a portion of the particulates suspended in the air to thereby create ionized particulates in the prefiltered air, the ionizer downstream from the prefilter and upstream from the fan positioned to create an airflow within the housing; and prior to the prefiltered air exiting the housing with ionized particulates, causing the ionized particulates to pass through an electrostatically charged main filter disposed within the housing downstream from each of the ionizer and the fan.

A particle separation system for separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is disclosed. The particle separation system includes an airflow path for directing the airflow from an inlet to an outlet. The airflow path includes a first airflow path section in a first direction and a second airflow path section in a second direction, the first and second directions being different relative to each other. The airflow path also includes at least one electrically charged surface such that the airflow undergoes electrostatic precipitation as it traverses the airflow path. A method of separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is also disclosed.

A dust collection assembly (100) comprises a first annular ring (110) and a second annular ring (120). The first annular ring (110) is provided with a first electrical connection member (113) for connection to either the positive pole or the negative pole of a power source; the second annular ring (120) is disposed both separatedly from and insulatedly from the first annular ring (110); the second annular ring (120) is provided with a second electrical connection member (123) for connection to the other of the positive or negative poles of the power source. Also disclosed are an air purification device and an air conditioner comprising the present dust collection assembly (100).