CN202178911U

CN202178911U - Novel plasma generator

Info

Publication number: CN202178911U
Application number: CN2011202572115U
Authority: CN
Inventors: 林阳新; 杨家远
Original assignee: XIAMEN MAXMAC AIR TECHNOLOGY Co Ltd
Current assignee: XIAMEN MAXMAC AIR TECHNOLOGY Co Ltd
Priority date: 2011-07-20
Filing date: 2011-07-20
Publication date: 2012-03-28
Anticipated expiration: 2021-07-20

Abstract

The utility model discloses a novel plasma generator comprising a housing, a PCB mounted inside the housing, and a plasma ceramic wafer and a power supply line which are both connected inside the PCB, wherein the power supply line is connected with a 12 V DC power supply, the PCB is provided with a narrow pulse generation circuit for generating a DC pulse signal with a steep rising edge, and a step-up transformer for transforming the DC pulse signal into a narrow pulse high voltage signal, and the plasma ceramic wafer is connected with the output end of the step-up transformer. The plasma generator can be operated under a relatively high voltage, and uneasily generates spark discharge thereby being capable of providing active particles with concentration higher than the traditional DC corona discharge by a plurality of orders of magnitude; and under the action of the high voltage, the corona zone of the plasma ceramic wafer is relatively large and the electron density of the discharge space is relatively high, and the space charge effect enables the distribution of the electrons to tend to be uniform on the surface of the plasma ceramic wafer, and thereby the plasma generator is large in active space and high in energy conversion efficiency.

Description

A kind of novel plasma generator

Technical field

The utility model relates to the air cleaning facility art, refers in particular to a kind of novel plasma generator.

Background technology

Plasma generator is applied to air cleaning, deodorizing, sterilization occasion, in order to the circuit arrangement of the free radical that produces strong oxidizing property.Traditional plasma generator is the huge energy release of moment generation of in air, carrying out the positive and negative charge neutralization through produced simultaneously cation and anion; Thereby cause its change of bacterial structure on every side or the conversion of energy; Thereby cause bacterial death, realize the effect of its sterilization.

Be illustrated in figure 1 as a kind of STRUCTURE DECOMPOSITION figure of traditional plasma generator; It comprises shell, be installed in PCB circuit board in the shell, be connected power line and cation carbon brush, anion carbon brush in the PCB circuit board; Wherein, this cation carbon brush and anion carbon brush specifically are meant a kind of carbon fiber brush.Please combine Fig. 2 and Fig. 3; The operation principle of this plasma generator is: the 12V DC power supply on the electrical equipment terminal adapter is input on the PCB circuit board through power line; Sine wave oscillation circuit through being arranged in the PCB circuit board is reverse into AC signal; Boosting through step-up transformer is the high pressure sine wave alternating current again, and rectification is the direct current positive or negative high voltage to High Level AC Voltage through voltage doubling rectifing circuit, and this positive high voltage end is connected in the cation carbon brush; Negative high-voltage end is connected in the anion carbon brush, thereby drives cation carbon brush and anion carbon brush generation corona discharge.

Hence one can see that, and this traditional plasma generator produces plasma through dc corona discharge, and it can not be operated under higher voltage, under the situation of overtension, carries out the transition to sparkover easily, causes burning out also of device possibly cause security incident.And because voltage can only be limited in the relatively low scope; The corona zone that negative ions carbon brush periphery is produced is little; The electron density of discharge space is not high, and the electron distributions on negative ions carbon brush surface is inhomogeneous, so the concentration of its active space active particle is not high; The energy that it directly influences the abrupt release of positive and negative charge neutralization is difficult to improve energy conversion efficiency.

The utility model content

In view of this; The utility model is to the disappearance of prior art existence; Its main purpose provides a kind of novel plasma generator, and it can be operated under higher pulse voltage, and the active particle concentration than traditional high several magnitude of dc corona discharge can be provided; Its active space is also much bigger than traditional dc corona discharge, and energy conversion efficiency is high.

For realizing above-mentioned purpose, the utility model adopts following technical scheme:

A kind of novel plasma generator; Comprise housing, be installed in PCB circuit board in the housing, be connected plasma ceramic sheet and power line in the PCB circuit board; This power line is connected on the 12V DC power supply; This PCB circuit board is provided with the narrow pulse generating circuit that produces steep rising edge dc pulse signal and makes this dc pulse signal become the step-up transformer of burst pulse high tension voltage signal, and this plasma potsherd is connected the output of step-up transformer.

As a kind of preferred version, said housing comprises that drain pan and lid are located at the panel on the drain pan, is provided with several draw-in grooves in drain pan, is provided with several trips over against each draw-in groove in panel, and each trip is corresponding to fasten with each draw-in groove.

As a kind of preferred version, be provided with a perforate in the said panel, aforementioned plasma ceramic sheet is embedded in this perforate.

As a kind of preferred version, the both sides of said drain pan are provided with and are used for this drain pan is fixed to the hangers on the wall.

After the utility model adopted technique scheme, its beneficial effect was, mainly is through narrow pulse generating circuit and step-up transformer are set on the PCB circuit board; Under the effect of this narrow pulse generating circuit and step-up transformer, produce the pulse of steep rising edge dc pulse signal; In the extremely short burst length, electronics is accelerated and becomes high energy electron, excited gas molecule under this high energy electron effect; Make its ionization, and produce the free radical of strong oxidizing property.Take this and can know, this plasma generator can be operated under higher pulse voltage, and unlike traditional dc corona discharge, carries out the transition to sparkover easily, thereby the active particle concentration than traditional high several magnitude of dc corona discharge can be provided; In addition; Under action of high voltage; The corona zone of this plasma potsherd is big and the discharge space electron density is higher; Space charge effect also makes electronics be tending towards evenly in the surface distributed of plasma ceramic sheet simultaneously, so its active space is also much bigger than traditional dc corona discharge, the conversion efficiency of energy is high.

Be architectural feature and the effect of more clearly setting forth the utility model, come the utility model is elaborated below in conjunction with accompanying drawing and specific embodiment.

Description of drawings

Fig. 1 is the STRUCTURE DECOMPOSITION sketch map of prior art products;

Fig. 2 is the operation principle block diagram of prior art products;

Fig. 3 is the circuit diagram of prior art products;

Fig. 4 is the STRUCTURE DECOMPOSITION sketch map among the embodiment of the utility model;

Fig. 5 is the circuit diagram among the embodiment of the utility model;

Fig. 6 is the operation principle block diagram among the embodiment of the utility model.

The accompanying drawing identifier declaration:

100, plasma generator 10, housing

11, drain pan 111, hangers

112, through hole 12, panel

121, trip 122, opening

20, PCB circuit board 21, power line

30, plasma ceramic sheet 40, cation carbon brush

50, anion carbon brush.

Embodiment

Extremely shown in Figure 6 like Fig. 4; It has demonstrated the concrete structure of the embodiment of the utility model, and this plasma generator 100 comprises housing 10, be installed in PCB circuit board 20 in the housing 10, be connected plasma ceramic sheet 30 and power line 21 in the PCB circuit board 20.

Particularly; This housing 10 comprises that drain pan 11 and lid are located at the panel 12 on the drain pan 11; This drain pan 11 is the chest of a cuboid, and two lateral walls are provided with two hangers 111 in about this drain pan 11, is provided with through hole 112 in this hangers 111; Act on through fixture in the through hole 112 of hangers 111, can drain pan 11 be fixed on positions such as wall, truck body screw or iron nail and so on.In addition, madial wall is provided with draw-in groove (not diagrammatic sketch) in the front and back of this housing 10, is used for trip 121 collocation with following panel 12.Said panel 12 is a flat thin plate; The side edge is to having several trips 121 in the front and back of this thin plate; Each draw-in groove that position and drain pan 11 are set of each trip 121 over against, and each trip 121 is corresponding is interlocked with each draw-in groove (not diagrammatic sketch), and panel 12 and drain pan 11 are combined.And; Be provided with in the middle part of this panel 12 one with the suitable openings 122 of plasma ceramic sheet 30 sizes; This plasma potsherd 30 is embedded in this opening 122, and wherein one side is exposed outside housing 10, thereby can purify the outer air of housing 10, deodorizing, sterilization.

The size dimension of said PCB circuit board 20 can longitudinally be enclosed in the drain pan 11 just; Lead in this PCB circuit board 20 is as shown in Figure 5 with being connected of electronic devices and components; It comprises narrow pulse generating circuit and step-up transformer T1; Narrow pulse generating circuit is connected the low-pressure side of this step-up transformer T1, and aforementioned plasma ceramic sheet 30 is connected the high-pressure side of step-up transformer T1.

Comprehensive, cooperate Fig. 6, the circuit working principle of this plasma generator 100 does; The input of 12V DC power supply, the process narrow pulse generating circuit produces the dc pulse signal of steep rising edge, and this signal of telecommunication boosts into the burst pulse high voltage signal through step-up transformer T1; Drive plasma ceramic sheet 30 electrode discharges, in the extremely short burst length, electronics is accelerated and becomes high energy electron; Excited gas molecule under the high energy electron effect makes its ionization, and produces the free radical of strong oxidizing property; And the bigger ion of other quality since effect of inertia have little time to be accelerated and keep static basically in pulse moment.

The design focal point of the utility model is; Mainly be through narrow pulse generating circuit and step-up transformer being set on the PCB circuit board, under the effect of this narrow pulse generator and step-up transformer, producing the pulse of steep rising edge dc pulse signal, in the extremely short burst length; Electronics is accelerated and becomes high energy electron; Excited gas molecule under this high energy electron effect makes its ionization, and produces the free radical of strong oxidizing property.Take this and can know, this plasma generator can be operated under higher pulse voltage, and unlike traditional dc corona discharge, carries out the transition to sparkover easily, thereby the active particle concentration than traditional high several magnitude of dc corona discharge can be provided; In addition; Under action of high voltage; The corona zone of this plasma potsherd is big and the discharge space electron density is higher; Space charge effect also makes electronics be tending towards evenly in the surface distributed of plasma ceramic sheet simultaneously, so its active space is also much bigger than traditional dc corona discharge, the conversion efficiency of energy is high.

The above; It only is the preferred embodiment of the utility model; Be not that the technical scope of the utility model is done any restriction; So every technical spirit according to the utility model all still belongs in the scope of the utility model technical scheme any trickle modification, equivalent variations and modification that above embodiment did.

Claims

1. novel plasma generator; It is characterized in that: comprise housing, be installed in PCB circuit board in the housing, be connected plasma ceramic sheet and power line in the PCB circuit board; This power line is connected on the 12V DC power supply; This PCB circuit board is provided with the narrow pulse generating circuit that produces steep rising edge dc pulse signal and makes this dc pulse signal become the step-up transformer of burst pulse high tension voltage signal, and this plasma potsherd is connected the output of step-up transformer.

2. a kind of novel plasma generator according to claim 1; It is characterized in that: said housing comprises that drain pan and lid are located at the panel on the drain pan; Be provided with several draw-in grooves in drain pan, be provided with several trips over against each draw-in groove in panel, each trip is corresponding to fasten with each draw-in groove.

3. a kind of novel plasma generator according to claim 2 is characterized in that: be provided with a perforate in the said panel, aforementioned plasma ceramic sheet is embedded in this perforate.

4. a kind of novel plasma generator according to claim 2 is characterized in that: the both sides of said drain pan are provided with and are used for this drain pan is fixed to the hangers on the wall.