CN205265988U

CN205265988U - Hand -held type low temperature plasma fluidic device

Info

Publication number: CN205265988U
Application number: CN201520907482.9U
Authority: CN
Inventors: 王兴权; 王凤鹏; 黄骏; 陈维; 何洪涛; 曾祥华
Original assignee: GAN NAN NORMAL COLLEGE
Current assignee: GAN NAN NORMAL COLLEGE; Gannan Normal University
Priority date: 2015-11-16
Filing date: 2015-11-16
Publication date: 2016-05-25
Anticipated expiration: 2025-11-16

Abstract

The utility model discloses a hand -held type plasma generation device, including plasma chamber, insulating protective clothing pipe, hard air duct, external power source and outside air supply, the plasma chamber includes small -bore copper pipe electrode and tape insulation layer electrode, tape insulation layer electrode is the wire of enameled wire or tape insulation covering, and this electrode can twine on the copper pipe or the winding is in form the return circuit of discharging apart from position within the copper pipe 10mm on the hard air duct, the return circuit forms and receives external disturbance less at the intracavity owing to discharging, hard air duct can directly overlap in copper pipe electrode outside, insulating protective clothing pipe is 10~14mm of internal diameter external diameter, 14~18mm's silicone tube or PU pipe, can be plasma chamber and inseparable firm the packing into wherein of trachea, and protective case can play the security isolation effect and be convenient for handheld operation. This device can stable work under the atmospheric pressure to keep the plasma temperature for the room temperature or only a little more than the room temperature. Plasma jet area, length, intensity accessible mains voltage and frequency that this device produced are adjusted, can provide different mode to the processing object of difference. This device can conveniently produce the stable atmospheric pressure low temperature plasma efflux that is rich in the high energy active particle, and the handheld operation discharge device of being convenient for.

Description

A kind of hand-held low-temperature plasma jet device

Technical field

The utility model relates to a kind of atmospheric pressure plasma fluidic device, is specially hand-held atmospheric pressure He gas medium barrier discharge low-temperature plasma fluidic device.

Background technology

Dielectric barrier discharge is to have dielectric to insert a kind of gas discharge of discharge space, and medium can cover on electrode and also can be suspended in discharge space. Like this, when apply sufficiently high alternating voltage on sparking electrode time, even if interelectrode gas also can be breakdown under hyperbar very and be formed so-called dielectric barrier discharge. Dielectric barrier discharge plasma is a kind of anticyclonic cold plasma. Because it can produce under higher than atmospheric condition at atmospheric conditioned disjunction, and not needing vacuum equipment just can at lower temperature, obtain the needed active particle of chemical reaction, it also has physical process and the chemical processes such as special light, heat, sound, electricity.

Dielectric barrier discharge can under atmospheric pressure produce stable low temperature plasma, compared with other low temperature plasma production method, be more suitable in large-scale industrial production, in fields such as exhaust-gas treatment, wastewater treatment, flue gas desulfurization, sterilizing, material surface modifying, oxidation operation processing, thin film deposition, skin surface processing, there is broad prospect of application, caused showing great attention to of many researchers. Especially in recent years, lower temperature plasma technology has obtained studying widely and applying at biomedical sector, people are attempting replacing or ancillary drug and traditional medical procedure reach better result for the treatment of with plasma, the side effect that so not only can avoid medicine to cause human body, also can not damage environment.

Owing to being subject to the constraint of dielectric material, size and shape in dielectric barrier discharge structure, and discharge voltage and temperature conventionally higher, traditional dielectric barrier discharge device exists following shortcoming (1) profile larger; (2) use and have Danger Electric shock risk; (3) jet temperature is higher; (4) processing cost is higher. Because causing traditional sucrose discharge-blocking device, the existence of these shortcomings is unfavorable for hand-held.

Summary of the invention

The purpose of this utility model be to provide a kind of cost lower, be convenient to hand-held and safe atmos low-temperature plasma jet device, to solve traditional sucrose barrier discharge inconvenience hand-held and discharge voltage and the higher problem of temperature.

In order to achieve the above object, the technical scheme that the utility model adopts is: the related Handheld plasma body of the utility model generating means comprises plasma chamber, insulating protective sleeve, hard wireway, external power source and external air source; Described plasma chamber comprises small-bore copper pipe electrode and tape insulation layer electrode, and described two electrodes are connected respectively to the two poles of the earth of described external power source; Described external power source is AC power or the pulse power of 10kHz ~ 30kHz; Described external air source is He gas, is connected with plasma chamber by wireway.

Handheld plasma body generating means, is characterized in that: described copper pipe electrode is copper tube or the brass tube of internal diameter 0.5 ~ 3mm, wall thickness 0.5 ~ 2mm, and has line effect; Described tape insulation layer electrode is the wire of enamel-covered wire or tape insulation covering, its insulating barrier has the effect of block media simultaneously, effectively prevent that plasma from transforming to arc discharge, described tape insulation layer electrode can be wrapped on copper pipe or be wrapped in distance copper pipe 10mm on described hard wireway and form discharge loop with interior position; Described two electrodes are connected respectively to the two poles of the earth of described external power source; Because discharge loop forms and is subject to external interference less in chamber, be therefore conducive to form stable plasma jet, and described tape insulation layer electrode is by the ground end ground connection of power supply, to ensure instrument safety; Described external power source is AC power or the pulse power of 10kHz ~ 30kHz; Silicone tube or polyfluortetraethylene pipe that described hard wireway is internal diameter 3 ~ 5mm, have excellent bending performance, and wireway can directly closely be enclosed within copper pipe electrode outside, and gas is passed into and in copper pipe, discharges and penetrate; Described external air source is He gas, is connected with plasma chamber by wireway, and the use of He gas is conducive to reduce discharge voltage and discharge power, thereby ensures the safety of hand-held device; Described insulating protective sleeve is silicone tube or the PU pipe of internal diameter 10 ~ 14mm external diameter 14 ~ 18mm; there is good pliability and bending property; can be the packing into wherein of plasma chamber and tracheae close and firm, and described protective casing can play safe buffer action and be convenient to hand-held.

Have the He gas of certain flow rate to enter copper pipe by hard wireway, the He gas under the action of high voltage on two electrodes in copper pipe punctures formation plasma and develops into jet. Plasma jet temperature maintains room temperature substantially, thereby forms low temperature atmospheric pressure plasma jet, and can hand-held. This device is steady operation under atmospheric pressure, and to keep plasma temperature be room temperature or only a little more than room temperature. Plasma jet area, length, intensity that this device produces can regulate by supply voltage and frequency, can provide different mode of operations for different handling objects.

The use of this device is conducive to reduce equipment processing cost, and can conveniently produce the stable atmos low-temperature plasma jet that is rich in high energy active particle, and is convenient to hand-held use electric discharge device. Therefore the utility model will improve the range of application of low temperature plasma greatly, the irregular material surface modification of for example processing for traditional plasma inconvenience, for the topical surface treatment in limited range, for skin surface cleaning, sterilization, sterilization, and disinfection under some other occasion, disease treatment, plasma etching etc.

Brief description of the drawings

Fig. 1 is Handheld plasma body fluidic device structural representation.

Detailed description of the invention

As shown in Figure 1. The related Handheld plasma body of the utility model generating means comprises plasma chamber, insulating protective sleeve 6, hard wireway 4, external power source 3 and external air source 5; Described plasma chamber comprises small-bore copper pipe electrode 1 and tape insulation layer electrode 2, it is characterized in that: copper tube or brass tube that described copper pipe electrode 1 is internal diameter 2mm, external diameter 4mm, and there is line effect; Described tape insulation layer electrode 2 is the wire of enamel-covered wire or tape insulation covering, its insulating barrier has the effect of block media simultaneously, effectively prevent that plasma from transforming to arc discharge, described tape insulation layer electrode 2 can be wrapped on copper pipe 1 or be wrapped in distance copper pipe 10mm on described hard wireway 4 and form discharge loop with interior position; Described two electrodes 1,2 are connected respectively to the two poles of the earth of described external power source 3; Because discharge loop forms and is subject to external interference less in chamber, be therefore conducive to form stable plasma jet, and described tape insulation layer electrode 2 is by the ground end ground connection of power supply, to ensure instrument safety; AC power or the pulse power that described external power source 3 is 10kHz ~ 30kHz; Described hard wireway 4 is silicone tube or the polyfluortetraethylene pipe of internal diameter 4mm, has excellent bending performance, and wireway 4 can directly be enclosed within copper pipe electrode 1 outside, and gas 5 is passed into and in copper pipe 1, discharges and penetrate; Described external air source is He gas 5, is connected with plasma chamber by wireway 4, and the use of He gas is conducive to reduce discharge voltage and discharge power, thereby ensures the safety of hand-held device; Described insulating protective sleeve 6 is silicone tube or the PU pipe of internal diameter 12mm external diameter 16mm; there is good pliability and bending property; can be the packing into wherein of plasma chamber and tracheae close and firm, and described protective casing can play safe buffer action and be convenient to hand-held.

The He gas 5 of certain flow rate enters copper pipe 1 by hard wireway 4, and the He gas under the action of high voltage on two electrodes in copper pipe 1 punctures formation plasma and develops into jet 7. Plasma jet 7 temperature maintain room temperature substantially, thereby form low temperature atmospheric pressure plasma jet, and can hand-held. This device is steady operation under atmospheric pressure, and to keep plasma temperature be room temperature or only a little more than room temperature. Plasma jet area, length, intensity that this device produces can regulate by external power source 3 voltages and frequency, can provide different mode of operations for different handling objects.

Claims

1. a Handheld plasma body generating means, comprise plasma chamber, insulating protective sleeve, hard wireway, external power source and external air source, it is characterized in that: described plasma chamber comprises small-bore copper pipe electrode and tape insulation layer electrode, described copper pipe electrode is internal diameter 0.5 ~ 3mm, the copper tube of wall thickness 0.5 ~ 2mm or brass tube, described tape insulation layer electrode is the wire of enamel-covered wire or tape insulation covering, described tape insulation layer electrode can be wrapped on copper pipe or be wrapped on described hard wireway distance copper pipe 10mm with interior position, described two electrodes are connected respectively to the two poles of the earth of described external power source, and described tape insulation layer electrode is by the ground end ground connection of power supply.

2. a Handheld plasma body generating means as claimed in claim 1, is characterized in that: described insulating protective sleeve is silicone tube or the PU pipe of internal diameter 14mm external diameter 16mm, can packing into wherein plasma chamber and tracheae close and firm.