摘要:
The subject of the present invention relates to a high efficiently dielectric barrier discharge (DBD)-lamp for generating and/or emitting a radiation of ultraviolet (UV)-light comprising: a discharge gap (1) being at least partly formed and/or surrounded by at least an inner wall (2) and an at least partly transparent (3), each with an inner surface (2a, 3a), facing the discharge gap (1) and an outer surface (2b, 3b) arranged opposite of and directed away from the corresponding inner surface (2a, 3a), a filling located inside the discharge gap (1), at least two electrical contacting means (4), a first electrical contacting means (4a) at the inner wall (2) and a second electrical contacting means (4b) at the outer wall (3), and at least one luminescent coating layer (5) arranged at/on and at least partly covering at least a part of the respective wall's inner surface (3a), arranged such, that at least a part of the generated UV-light of a certain wavelength range can pass the luminescent coating layer (5) from the discharge gap (1) to the outside of the DBD-lamp, whereby at least one of both walls (2, 3) is at least partly arranged with directing means (6), so that the diffusive radiation is directed in direction through the transparent part of the outer wall (3) with reduced losses due to absorption effects and the like.
摘要:
The subject of the present invention relates to a high efficiently dielectric barrier discharge (DBD) -lamp for generating and/or emitting a radiation of ultraviolet (UV)-light comprising: a discharge gap (1) being at least partly formed and/or surrounded by at least an inner wall (2) and an at least partly transparent (3), each with an inner surface (2a, 3a), facing the discharge gap (1) and an outer surface (2b, 3b) arranged opposite of and directed away from the corresponding inner surface (2a, 3a), a filling located inside the discharge gap (1), at least two electrical contacting means (4), a first electrical contacting means (4a) at the inner wall (2) and a second electrical contacting means (4b) at the outer wall (3), and at least one luminescent coating layer (5) arranged at/on and at least partly covering at least a part of the respective wall's inner surface (3a), arranged such, that at least a part of the generated UV-light of a certain wavelength range can pass the luminescent coating layer (5) from the discharge gap (1) to the outside of the DBD-lamp, whereby at least one of both walls (2, 3) is at least partly arranged with directing means (6), so that the diffusive radiation is directed in direction through the transparent part of the outer wall (3) with reduced losses due to absorption effects and the like.
摘要:
The subject of the present invention is a system incorporating a DBD lamp (1), a dielectric barrier discharge (DBD-) lamp (1), and a phosphor coating (2) for use as luminescent coating in a dielectric barrier discharge (DBD-) lamp (1), especially in a mercury-free DBD-lamp, comprising several phosphor grains (3a) together forming a luminescent coating layer (3) for converting a primary discharge radiation into a wanted radiation, whereby the phosphor coating (2) comprises a protective coating layer (4) at least partly surrounding the luminescent coating layer (3) for minimizing degradation of the luminescent coating layer (3) during use in a DBD-lamp (1).
摘要:
A dielectric barrier discharge (DBD-) lamp (1) comprising a discharge volume (2) which is delimited by a first and a second wall (4, 5) is disclosed, wherein both walls (4, 5) are exposed to different electrical potentials by means of a power supply (11) for exciting a gas discharge within the discharge volume (2). By providing at least one electrically conductive ignition aid or igniter which extends within the discharge volume (2) and which electrically contacts the first and the second wall (4, 5) with each other, a significant reduction of the initial ignition voltage of the lamp (1) can be obtained, especially after long pauses of operation of the lamp (1).
摘要:
The subject of the present invention is a lamp-ballast-system (1), especially a dielectric barrier discharge (DBD-) lamp-ballast-system for generating and/or emitting a radiation of ultraviolet (UV-)-light comprising: a lamp (2) having means for electrical contacting and a ballast (3) having a housing (4) accommodating at least a high-voltage part and a lamp support, connectable to and supplying the DBD-lamp (2) at least with electricity, whereby the electrical connection (5) between the DBD-lamp (2) and the ballast (3) is arranged cable-free.
摘要:
In a fluid treatment system includes a housing with fluid inlet and outlet for a process fluid, an irradiation zone disposed between the fluid inlet and fluid outlet, and at least one radiation source module with a radiation source having a discharge vessel with outer and inner wall. The inner wall encloses an internal volume with at least one opening and an internal electrode for igniting and maintaining a discharge. The radiation source module also includes a submersible frame with a guide to guide the process fluid into and out of the internal volume of the radiation source. The dissipation of the heat generated by the discharge in the discharge gap via a fluid flow in the internal volume of the lamp and in contact with the internal electrode is substantially more effective than dissipation via a cooling channel separated from the internal electrode. It is therefore substantially easier to maintain the discharge at an approximately optimal temperature.
摘要:
A lamp holder for a dielectric barrier discharge (DBD) lamp (1), especially for use in a treatment system or reactor or housing or in an irradiation apparatus, for radiating a medium like a fluid and/or a gas and/or a solid material by means of the DBD lamp (1) is disclosed. The holder substantially comprises two end caps (21, 31) at the axial ends of the lamp (1) and an inner electrode (23, 24; 33, 34) with a screw fitting (SF) for exerting an axial pressure on both axial ends of the lamp (I) via both end caps (21, 31) and with axial bores (25, 35) into an inner volume (14) for guiding especially a cooling medium and for electrically contacting an inner tube (II) of the lamp (1). The holder has a comparatively simple construction and can easily be assembled. Furthermore, even larger tolerances of the lamp length can be compensated and a reliable sealing of the inner volume (14) against the outside of the lamp (1) is achieved.
摘要:
The subject of the present invention is a dielectric barrier discharge (DBD-) lamp (1) for generating and emitting an ultraviolet radiation with ignition aid comprising: a discharge gap (2) being at least partly formed and/or surrounded by at least an inner wall (5) and an outer wall (4), whereby at least one of the walls (4, 5) is a dielectric wall and at least one of the walls (4, 5) has an at least partly transparent part, a filling located inside the discharge gap (2), at least two electrical contacting means, a first mean for electrical contacting associated with the outer wall (4) and a second mean for electrical contacting associated with the inner wall (5), whereby at least one multifunctional means (3) is arranged adjacent to the discharge gap (2) functioning as guiding aid and as ignition aid.
摘要:
Transformers (1) for transforming primary signals into secondary signals comprise primary and secondary parts that comprise boards (11-14, 21-23) with turns. By introducing distances larger than zero between for example any pair of neighboring boards (11-14, 21-23), parasitic capacitances of the transformers (1) are reduced, and the secondary signals may comprise relatively fast/high voltage pulses having rise times >1 kV/μsec. To reduce proximity effects and any resulting losses, the primary and secondary boards (11-14, 21-23) may be stacked in interleaved ways. Such sandwich constructions reduce leakage inductances. In a particular direction, distances between subsequent primary boards (11-14, 21-23) and distances between subsequent combinations of primary and secondary boards (11-14, 21-23) are to be increased to further reduce capacitive losses in that particular direction. Relatively low voltage differences may be present between relatively close boards (11-14, 21-23), and relatively high voltage differences may be present between boards (11-14, 21-23) that are relatively far away from each other.
摘要:
The subject of the present invention is a dielectric barrier discharge (DBD-) lamp (1) for generating and emitting ultraviolet radiation comprising: —a housed discharge gap (3), whereby the housing has at least two walls, whereby at least one of the walls is a dielectric wall and at least one of the walls has an at least partly transparent part, a filling located inside the discharge gap (3), at least two electrical contacting means for electrical contacting associated with at least the two walls, respectively, whereby the discharge gap (3) is formed by at least two discharge sub-volumes (7) and/or discharge sub-areas (8) differing in at least one of their discharge parameters for realizing at least two dominant emission regimes and/or one emission regime with different radiant intensities and a method for producing said DBD-lamp (1).