Summary of the invention it is an object of the invention to provide a kind of microwave cylindrical coaxial cavity resonator plasma lamp, to solve prior art pottery
Porcelain cavity resonator structure complex process and the bigger problem of dielectric loss.
In order to achieve the above object, the technical solution adopted in the present invention is:
Microwave cylindrical coaxial cavity resonator plasma lamp, it is characterised in that: include rosette base, resonator cavity outer conductor, circle
Metal shrouding disc, described resonator cavity outer conductor is the hollow cylindrical configuration that conductive metallic material is made, and resonator cavity outer conductor coaxially sets
Put on rosette base, rosette base tube port position bottom resonator cavity outer conductor close resonator cavity outer conductor, institute
State circular metal shrouding disc and cover at resonator cavity outer conductor top tube port position, by circular metal shrouding disc at resonator cavity outer conductor top cylinder
Closing resonator cavity outer conductor at Kou, be coaxially arranged with inner wire in resonator cavity outer conductor, inner wire bottom is closely vertically connected on
On rosette base, constitute the short-circuit attachment structure between inner wire and resonator cavity outer conductor, institute by rosette base
State circular metal shrouding disc center and have through hole, and inner wire top is stretched in circular metal shrouding disc central through hole, described inner wire
Top is provided with hemispherical groove, is provided with electrodeless cylindrical bulb in hemispherical groove, and electrodeless cylindrical bulb from
Circular metal shrouding disc exposes, and also includes round ceramic ring, and round ceramic ring is by the bigger hypomere of the less epimere of external diameter and external diameter
Constitute, and round ceramic ring epimere external diameter and circular metal shrouding disc central through hole diameter matches, it is provided with vertical in round ceramic ring
Cavity, cavity diameter mates with inner conductor outer diameter, and cavity top is set to reducing at round ceramic top surface of ring, the bore of reducing
Mating with electrodeless cylindrical bulb external diameter, the height of the hypomere of round ceramic ring is much smaller than the height of resonator cavity outer conductor cavity
Degree, round ceramic ring hypomere side has the blind hole of non-through round ceramic ring, and described round ceramic ring is assemblied in by cavity
Inner wire top, round ceramic ring epimere stretches in circular metal shrouding disc central through hole and exposes circular metal shrouding disc center and leads to
Hole, and round ceramic top surface of ring reducing is enclosed within electrodeless cylindrical bulb, the described resonator cavity outer conductor upper side side of being provided with
Shape plane, has coupling throughhole in the middle of square planar, square planar is provided with flange, has same with coupling throughhole in the middle of flange
The round tube hole of axle connection, is inserted with coaxial type probe, and coaxial type probe stretches into resonator cavity outer conductor in described flange round tube hole
In and insert in the blind hole of round ceramic ring side.
Described microwave cylindrical coaxial cavity resonator plasma lamp, it is characterised in that: described rosette base, resonator cavity outer conductor material
Matter selects high conductivity metal material, can be selected for aluminum, or aluminium alloy, or copper, wherein preferred aluminium alloy.
Described microwave cylindrical coaxial cavity resonator plasma lamp, it is characterised in that: described inner wire can be solid construction, or is
Hollow structure, or the hollow structure of high thermal conductivity material it is filled with for inside.
Described microwave cylindrical coaxial cavity resonator plasma lamp, it is characterised in that: described round ceramic ring selects high heat conductance insulation
Material, can be selected for aluminium oxide, or beryllium oxide, or zirconium oxide, wherein preferential oxidation aluminum.
Described microwave cylindrical coaxial cavity resonator plasma lamp, it is characterised in that: the described electrodeless upper and lower two ends of column type bulb are
Hemispherical hollow structure, centre is cylindrical hollow configuration, and electrodeless column type bulb bubble wall uses quartz glass or pottery
Material, inside comprises argon and metal halide element, or comprises mercury element.
Described microwave cylindrical coaxial cavity resonator plasma lamp, it is characterised in that: described round ceramic ring is by the less epimere of external diameter
The hypomere bigger with external diameter is constituted, and round ceramic ring hypomere external diameter mates with resonator cavity outer conductor intracavity diameter, or less than humorous
Shake chamber outer conductor intracavity diameter, and round ceramic ring hypomere height mates with resonator cavity outer conductor cavity heights, on round ceramic ring
Section external diameter and circular metal shrouding disc central through hole diameter matches, round ceramic ring epimere height and circular metal shrouding disc central through hole
Matched, is provided with vertical cavity in round ceramic ring, cavity diameter mates with inner conductor outer diameter, round ceramic ring upper side
Face has the blind hole of non-through round ceramic ring, and described round ceramic ring is set with in the conductor by its cavity, round ceramic
The bottom surface of ring hypomere contacts with rosette base, and annular ceramic ring epimere stretches in circular metal shrouding disc central through hole also
Filling up circular metal shrouding disc central through hole, described coaxial type probe is direct after passing resonator cavity outer conductor upper side coupling throughhole
Insert in the blind hole of round ceramic ring side.
Benefit of the invention is that, Multi-beam klystron plasma source can greatly reduce the consumption of pottery,
Without ceramic metallization, technique is simple, alleviates the weight of plasma lamp.It is additionally, since chamber in-vivo medium and is mainly air,
Substantially reduce the dielectric loss of cavity, be conducive to improving the luminous efficiency of plasma lamp.Meanwhile, as improvement, cavity medium
Ceramic material can also be used, thus strengthen heat radiation and the job stability of plasma lamp, compared to the prior art, also simultaneously
Volume can be reduced and reduce weight, thus there is bigger motility.
Present invention could apply to the resonator cavity of various microwave excited plasma lamp, it is achieved the gathering to microwave energy,
Produce higher electric field intensity, so that bulb gas ionization, form the plasma source of high brightness.
Detailed description of the invention
As Figure 1-Figure 4.Microwave cylindrical coaxial cavity resonator plasma lamp, include rosette base 2, resonator cavity outer conductor 1,
Circular metal shrouding disc 5, the hollow cylindrical configuration that resonator cavity outer conductor 1 is made for conductive metallic material, resonator cavity outer conductor 1 is coaxial
It is arranged on rosette base 2, rosette base 2 leads outside tube port position closing resonator cavity bottom resonator cavity outer conductor 1
Body 1, circular metal shrouding disc 5 covers at resonator cavity outer conductor 1 top tube port position, by circular metal shrouding disc 5 at resonator cavity outer conductor 1
Top tube port position closes resonator cavity outer conductor 1, is coaxially arranged with inner wire 8 in resonator cavity outer conductor 1, and inner wire 8 bottom is tight
Be vertically connected on rosette base 2, by rosette base 2 constitute between inner wire 8 and resonator cavity outer conductor 1 short
Road attachment structure, circular metal shrouding disc 5 center has through hole, and circular metal shrouding disc 5 central through hole is stretched on inner wire 8 top
In, inner wire 8 top is provided with hemispherical groove, is provided with electrodeless cylindrical bulb 6, and electrodeless circle in hemispherical groove
Cylindricality bulb 6 exposes from circular metal shrouding disc 5, also includes round ceramic ring 7, round ceramic ring 7 by the less epimere of external diameter and
The bigger hypomere of external diameter is constituted, and round ceramic ring 7 epimere external diameter and circular metal shrouding disc 5 central through hole diameter matches, circular
Being provided with vertical cavity in ceramic ring 7, cavity diameter mates with inner wire 8 external diameter, and cavity top sets at round ceramic ring 7 end face
Being set to reducing, the bore of reducing mates with electrodeless cylindrical bulb 6 external diameter, and the height of round ceramic ring 7 hypomere is much smaller than humorous
Shake the height of chamber outer conductor cavity, and round ceramic ring 7 hypomere side has the blind hole of non-through round ceramic ring 7, round ceramic
Ring 7 is assemblied in inner wire 8 top by cavity, and round ceramic ring 7 epimere stretches in circular metal shrouding disc 5 central through hole and exposes
Circular metal shrouding disc 5 central through hole, and round ceramic ring 7 end face reducing is enclosed within electrodeless cylindrical bulb 6, leads outside resonator cavity
Body 1 upper side is provided with square planar, has coupling throughhole in the middle of square planar, and square planar is provided with flange 3, flange 3
Centre has and the round tube hole of coupling throughhole coaxial communication, is inserted with coaxial type probe 4 in flange 3 round tube hole, and coaxial type is visited
In pin 4 stretches into resonator cavity outer conductor 1 and insert in the blind hole of round ceramic ring 7 side.
Rosette base 2, resonator cavity outer conductor 1 material selection high conductivity metal material, can be selected for aluminum, or aluminum closes
Gold, or copper, wherein preferred aluminium alloy.
Inner wire 8 can be solid construction, or is hollow structure, or is filled with the hollow of high thermal conductivity material for inside
Structure.
Round ceramic ring 7 selects high heat conductance insulant, can be selected for aluminium oxide, or beryllium oxide, or zirconium oxide, its
Middle preferential oxidation aluminum.
Electrodeless column type bulb about 6 two ends are hemispherical hollow structure, and centre is cylindrical hollow configuration, electrodeless
Column type bulb 6 steeps wall and uses quartz glass or ceramic material, and inside comprises argon and metal halide element, or bag
Containing mercury element.
As shown in Figure 5, Figure 6.Round ceramic ring 7 is made up of the hypomere that the less epimere of external diameter and external diameter are bigger, circular pottery
Porcelain ring 7 hypomere external diameter mates with resonator cavity outer conductor 1 intracavity diameter, or less than resonator cavity outer conductor 1 intracavity diameter, circular pottery
Porcelain ring 7 hypomere height mates with resonator cavity outer conductor 1 cavity heights, in round ceramic ring 7 epimere external diameter and circular metal shrouding disc 5
Heart through-hole diameter mates, round ceramic ring 7 epimere height and circular metal shrouding disc 5 central through hole matched, round ceramic ring 7
Inside being provided with vertical cavity, cavity diameter mates with inner wire 8 external diameter, and round ceramic ring 7 upper side has non-through circle
The blind hole of ceramic ring 7, round ceramic ring 7 is sleeved on inner wire 8 by its cavity, the bottom surface of round ceramic ring hypomere and metal
Disc base 2 contacts, and annular ceramic ring 7 epimere stretches in circular metal shrouding disc 5 central through hole and fills up circular metal lid
Dish 5 central through hole, coaxial type probe 4 is inserted directly into round ceramic ring 7 after resonator cavity outer conductor 1 upper side coupling throughhole
In the blind hole of side.
The present invention provides a kind of Multi-beam klystron for plasma source, simple in construction, reduces cavity
Dielectric loss, can be effectively improved the luminous efficiency of plasma lamp.Its microwave operational frequencies of the present invention can be 100MHz-3GHz
Between optional frequency scope, the microwave power of injection is between 50W to 1500W.
The contour structures of the coaxial resonant cavity plasma source of the embodiment of the present invention is as it is shown in figure 1, wherein circular metal
Realize short circuit by rosette base 2 with inner wire bottom coaxial resonant cavity outer conductor 1 be connected and close.Microwave energy passes through
The probe of outer conductor side is coupled into resonator cavity.The top half of resonator cavity outer conductor 1 has a square planar, and plane is opened coupling
Closing hole, flat outer is connected by screw flange 3, has circular hole in the middle of flange.Inserted by this flange circular hole and outer conductor coupling aperture
Entering coaxial type probe 4, coaxial type probe 4 inserts intra resonant cavity.Circular metal shrouding disc 5 is had on resonator cavity outer conductor 1 top, logical
Cross screw to realize being connected with resonator cavity outer conductor 1, in the middle of circular metal shrouding disc 5, have a circular hole, electrodeless cylindrical bulb 6 and circle
The upper part of shape ceramic ring 7 exposes circular metal shrouding disc 5 through this circular hole.Fig. 2 is outside coaxial cavity plasma lamp of the present invention
Shape front view.
The first embodiment of the present invention, resonator cavity mainly uses air dielectric, to reach extremely low conductor losses, meanwhile,
When using a small amount of ceramic material to make microwave excited plasma luminescence, bulb realizes good heat radiation.As it is shown on figure 3, round metal
Seat 2 of trying to get to the heart of a matter realizes good being conductively connected with resonator cavity outer conductor 1 by helicitic texture, and inner wire 8 hangs down with rosette base 2
Direct join compact siro spinning technology.Wherein, inner wire can be solid construction, it is also possible to for hollow structure, or internal to fill pottery contour
Heat-conductivity materials.One square planar is arranged at resonator cavity outer conductor 1 top, opens coupling aperture in the middle of plane, and flat outer is by screw even
Acting flange 3, has circular hole in the middle of flange.Coaxial type probe 4 is inserted by this flange circular hole and outer conductor coupling aperture.On inner wire top
End, has a hemispheric groove, puts into electrodeless cylindrical bulb 6 in groove, and electrodeless cylindrical bulb 6 is recessed with inner wire
Groove is connected by the bonding fixing compact that realizes.
Around the top of inner wire, having round ceramic ring 7, as shown in Figure 4, round ceramic ring 7 epimere outer diameter D 1 is less,
Reducing interior diameter d1 is identical with electrodeless cylindrical bulb 6 external diameter;Hypomere overall diameter D2 is relatively big, more than top outer diameter D 1, cavity
Diameter d2 is identical with inner wire diameter, and the height of hypomere is much smaller than the height of resonator cavity outer conductor cavity.During installation, round ceramic
Ring 7 hypomere internal diameter is inserted directly into inner wire top, and the epimere of round ceramic ring 7 is immediately around at electrodeless cylindrical bulb 6 end
Around portion.Round ceramic ring 7 can use aluminium oxide, beryllium oxide, zirconium oxide or other ceramic material sintering or processing and
Become, preferentially select alumina material, it is possible to select other high heat conductance insulant.On the side of round ceramic ring 7 bottom
Having a blind hole, during assembling, the inner wire of coaxial type probe 4 inserts intra resonant cavity, and front end puts in round ceramic ring 7 side
In blind hole, and keep certain distance with resonator cavity inner wire 8.
There is circular metal shrouding disc 5 on coaxial cavity top, realize being connected with coaxial cavity outer conductor by screw, circular metal lid
A circular hole, the upper part of electrodeless cylindrical bulb 6 and inner circular ceramic ring 7 is had to expose circle through this circular hole in the middle of dish 5
Metal shrouding disc 5.
As above electrodeless column type bulb 6, two ends are hemispherical hollow structure, and centre is cylindrical hollow configuration, bubble
Wall uses quartz glass or ceramic material to make, and inside comprises argon and metal halide element, it is also possible to comprise hydrargyrum unit
Element is so that the startup of lamp.
The second embodiment of the present invention, intra resonant cavity mainly uses ceramic material as medium, utilizes ceramic material high
The feature of thermal conductivity, such that it is able to strengthen the heat-sinking capability of plasma lamp, reduces operating temperature when bulb runs continuously, from
And improve system stability, further, it is also possible to be greatly reduced the size of whole resonator cavity, reduce the volume of whole plasma lamp
And weight.This intra resonant cavity structure as it is shown in figure 5, and the difference of the first embodiment be the structure of inner circular ceramic ring
Difference, especially length are longer.Such as Fig. 5, in the present embodiment, round ceramic ring is cylindrical ceramic ring, and hypomere height is longer, with
Resonator cavity outer conductor 1 cavity heights is identical, and the bottom surface of ceramic ring hypomere contacts with rosette base 2.Round ceramic ring is tied
As shown in Figure 6, ceramic ring top outer diameter D 1 is much smaller than lower height h2, ceramic ring less than lower outer diameter D2, upper height h1 to structure
Inner hollow, interior diameter d is identical with resonator cavity inner conductor outer diameter, and ceramic ring lower height h2 is high with resonator cavity outer conductor 1 inner chamber
Spending identical and mate, ceramic ring lower outer diameter D2 is less than or equal to the intracavity diameter of outer conductor 1.Ceramic ring side has one blind
Hole, coaxial type probe is directly in this blind hole of ceramic ring by the circular hole of flange hole and outer conductor side.
During use, microwave energy feed-in at the probe of side, through frequency-selecting and the energy storage of resonator cavity, microwave energy is at bulb
Place assembles, and forms higher electric field intensity, can puncture gas ionization generation plasma in bulb, due to bulb major part outside
Dew, thus the light that plasma resonance produces just can be as the light source of high brightness.
According to the method and structure of the present invention, devise two Coaxial resonators as demonstration.Use first enforcement
The structure of example, devises the air resonance chamber that resonant frequency is 440MHz, test result is consistent with Theoretical Calculation, it was demonstrated that this
Bright technical feasibility.Additionally, use the structure of second embodiment, devise an aluminium oxide ceramics dielectric resonant chamber,
Resonant frequency is 230MHz, and length is only 85mm, substantially reduces size and the weight of cavity.