Abstract: The invention relates to an intermediate circuit discharge unit for an intermediate circuit discharge, in particular of a multi-level inverter, having a capacitor and a discharge circuit which is connected in parallel, where the discharge circuit has an active discharge branch with at least one first discharge element and a passive discharge branch with at least one second discharge element. The active discharge branch comprises a first control connection, and the passive discharge branch comprises a second control connection. The active discharge branch is coupled to the passive discharge branch via the first control connection in such a way that the active discharge branch can be controlled by the passive discharge branch, in particular a discharge via the active discharge branch can be activated or deactivated as required. The invention further relates to an electrical assembly, a vehicle, as well as a method.

Abstract: A powder feed apparatus for a powder spraycoating equipment includes a dense phase powder pump fitted with at least one, or two feed chambers. Each of the feed chambers includes at one chamber end a powder intake valve and at the opposite chamber end a powder outlet valve and further includes at least one air exchange aperture to alternatingly apply compressed conveying air or a partial vacuum to the feed chamber. The apparatus further includes an integral structural block. The structural block includes the feed chambers and first control valves connected in fluid communication to at least one of feed chambers for the purpose of applying compressed conveying air and a partial vacuum to it. The first control valves are directly connected, in fluid communication via ducts constituted in the structural block, to at least one of the feed chambers.

Abstract: A powder spraycoating method and powder spraycoating equipment. A dense phase powder pump is used. According to a predetermined conveying-air function in a control unit, different rates of compressed conveying air can be defined for different powder rates. In one predetermined total-air function in the control unit, the sum of total-air rate composed of the rate of compressed conveying air and of the rate of supplemental compressed air can be kept constant even if the rate of compressed conveying air changes.

Abstract: An electronic spraycoating control device for implementing spraycoating methods includes at least one manually driven program selecting element for selecting programs from two different groups of programs. The electronic spraycoating control device further includes a plurality of manually driven parameter setting elements and display units to automatically display the adjusted parameter references values.

Abstract: A coating powder feed method, coating powder feeding device, electrostatic powder spraycoating apparatus containing such a coating powder feeding device. The invention includes a dense phase powder pump fitted with at least one feed chamber. A control signal to create a partial vacuum in the feed chamber is generated no earlier than simultaneously with, preferably by a predetermined delay time after, a control signal opening a powder intake valve of the feed chamber, as a result of which the beginning of partial vacuum buildup in the feed chamber shall take place no earlier than simultaneously with the initial opening of the powder intake valve or by a defined time delay after the opening of the powder intake valve.

Abstract: A powder feed apparatus for a powder spraycoating equipment includes a dense phase powder pump fitted with at least two feed chambers, alternatingly discharging coating powder. Each feed chamber includes a powder intake valve to aspirate coating powder during a suction stage and one powder outlet valve to discharge coating powder during a discharge stage. Each feed chamber further includes control valves to operate the dense phase powder pump and a control unit controlling the dense phase powder pump by the control valves. A dependence mode of the total open time (ttotal) of the powder intake valves defines the dependence of the total open time (ttotal) on an adjustable nominal value (mp) adjusted by a powder adjusting element and relating to the rate of powder to be conveyed by the dense phase powder pump, and defining a response delay time (tdelay) and an apparatus constant (C).

Abstract: A powder spraycoating control system and its combination with a powder pump or with a powder spraycoating unit. The control system contains an controller programmed to alternatingly operate a powder spraycoating unit in turn containing an injector serving as the powder pump or a powder spraycoating unit containing a dense phase powder pump serving as the powder pump.

Abstract: A coating powder feed method, coating powder feeding device, electrostatic powder spraycoating apparatus containing such a coating powder feeding device. The invention includes a dense phase powder pump fitted with at least one feed chamber. A control signal to create a partial vacuum in the feed chamber is generated no earlier than simultaneously with, preferably by a predetermined delay time after, a control signal opening a powder intake valve of the feed chamber, as a result of which the beginning of partial vacuum buildup in the feed chamber shall take place no earlier than simultaneously with the initial opening of the powder intake valve or by a defined time delay after the opening of the powder intake valve.

Abstract: The invention relates to a powder feed apparatus of a powder spraycoating equipment, containing a dense phase powder pump fitted with at least one feed chamber, preferably two feed chambers, alternatingly discharging coating powder, each feed chamber having one powder intake valve at a powder intake to aspirate coating powder during a suction stage and one powder outlet valve at a powder outlet to discharge coating powder during a discharge stage; further control valves to operate the dense phase powder pump; further an electric control unit containing at least one computer controlling the dense phase powder pump by means of said control valves, characterized in that a dependence mode of the total open time (ttotal) of the powder intake valves is stored in the control unit and defines the dependence of the total open time (ttotal) on an adjustable nominal value (mp) adjusted by a powder adjusting element at the control unit and relating to the rate of powder to be conveyed to be conveyed by the dense phase po

Abstract: A powder spraycoating method and powder spraycoating equipment. A dense phase powder pump is used. According to a predetermined conveying-air function in a control unit, different rates of compressed conveying air can be defined for different powder rates. In one predetermined total-air function in the control unit, the sum of total-air rate composed of the rate of compressed conveying air and of the rate of supplemental compressed air can be kept constant even if the rate of compressed conveying air changes.

Abstract: A powder spraycoating control system and its combination with a powder pump or with a powder spraycoating unit. The control system contains an controller programmed to alternatingly operate a powder spraycoating unit in turn containing an injector serving as the powder pump or a powder spraycoating unit containing a dense phase powder pump serving as the powder pump.

Abstract: A powder spraycoating equipment's powder feed apparatus containing a dense phase powder pump fitted with at least one, preferably two feed chambers each of which comprises at one chamber end a powder intake valve and at the opposite chamber end a powder outlet valve and further comprises at least one air exchange aperture to alternatingly apply compressed conveying air or a partial vacuum to the feed chamber, characterized by an integral structural block, by the feed chambers being constituted in the structural block, by all those first control valves that are connected in fluid communication to the minimum of one feed chamber for the purpose of applying compressed conveying air and a partial vacuum to it, being configured at the structural block and being directly connected, in fluid communication and by means of ducts constituted in the structural block, to the minimum of one feed chamber.

Abstract: The invention relates to an electronic spraycoating control device implementing spraycoating methods and containing at least one manually driven program selecting element to select programs from two different groups of programs, further containing a plurality of manually driven parameter setting elements and display units to automatically display the adjusted parameter references values.