Handheld Low Temperature Plasma Sterilizer

A low-temperature plasma, hand-held technology, used in plasma, treatment, disinfection and other directions, can solve the problems of inability to disinfect, weak penetration, low ultraviolet radiation energy, etc., and achieve the effect of improving stability and good sterilization effect.

Active Publication Date: 2022-06-24
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultraviolet disinfection and sterilization uses high-ozone ultraviolet lamps, which use the photochemical transformation of ultraviolet rays to sterilize, but the radiation energy of ultraviolet rays is low and the penetrating power is weak. It can only kill microorganisms that are directly irradiated, and cannot sterilize areas that cannot be irradiated.

Method used

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  • Handheld Low Temperature Plasma Sterilizer
  • Handheld Low Temperature Plasma Sterilizer
  • Handheld Low Temperature Plasma Sterilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The handheld low-temperature plasma sterilizer provided in this embodiment, such as figure 1 As shown, it includes a casing 1, a high-voltage electrode assembly arranged in the casing, a circuit board, a high-voltage discharge circuit and a working mode control circuit set on the circuit board, and a control unit for controlling the high-voltage discharge circuit and the working mode control circuit .

[0053] like figure 1 As shown, the housing 1 includes a head 11, a middle portion 12 and a hand-held portion 13 that are connected from top to bottom as a whole. like figure 2 and image 3 As shown, the high-voltage electrode assembly is installed in the housing head 11 , and the circuit board and the high-voltage discharge circuit, working mode control circuit and control unit installed thereon are installed in the middle part 12 of the housing. The handle portion 13 is designed with a corrugated groove for easy handling. A slide switch 2 connected to the control ...

Embodiment 2

[0073] The handheld low-temperature plasma sterilizer provided in this embodiment is a further improvement of the handheld low-temperature plasma sterilizer provided in Example 1, and the DC corona discharge circuit in Example 1 is replaced with an AC corona discharge circuit.

[0074] The AC corona discharge circuit used in this example, such as Figure 10 As shown, it includes an AC power supply, an autotransformer T11, an isolation transformer T12, a non-corona test transformer T13 and a coupling capacitor C11; both ends of the autotransformer T1 are connected in parallel with both ends of the AC power supply, and the The sliding contact is used as an electrical signal output end; one end of the input side of the isolation transformer T12 is connected to the sliding contact of the autotransformer T11, and the other end is grounded; the input side of the non-corona test transformer T13 is connected to the output of the isolation transformer T12 The two ends of the coupling c...

Embodiment 3

[0079] The handheld low-temperature plasma sterilizer provided in this embodiment is a further improvement of the handheld low-temperature plasma sterilizer provided in Embodiments 1 and 2. The AC corona discharge circuit and the DC corona discharge circuit are combined, and are installed on the circuit board 4 at the same time. superior.

[0080] In order to be suitable for different environments, the handheld low-temperature plasma sterilizer provided in this embodiment can satisfy five working modes: hand sterilization mode under DC corona discharge circuit, fresh fruit and vegetable sterilization mode, whole house sterilization mode, and AC corona discharge circuit Light Whole House Sterilization Mode and Whole House Sterilization Mode.

[0081]In order to meet the requirements of the above five functional modes, in this embodiment, the needle electrodes in the ejection area are divided into six groups: group A, group B, group C, group D, group E and group F; group A-group...

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Abstract

The invention discloses a hand-held low-temperature plasma sterilizer, which comprises a casing, a high-voltage electrode assembly arranged in the casing, a circuit board, a high-voltage discharge circuit and a working mode control circuit arranged on the circuit board, and a circuit for controlling the high-voltage discharge and the control unit of the working mode control circuit; the high-voltage electrode assembly includes a high-voltage positive plate and needle electrodes mounted on the high-voltage positive plate that match the number of nozzles; the needle electrodes in the spray area are divided into several groups; the high-voltage discharge circuit includes installation on the circuit board The AC corona discharge circuit or / and the DC corona discharge circuit; the working mode control circuit is arranged between the high voltage output terminal of the high voltage discharge circuit and the high voltage electrode assembly. Through the working mode control circuit, the output end of the high-voltage discharge circuit is connected to more than one set of needle electrodes in the spray area; the surface of the object to be sterilized is used as the negative electrode, and the corresponding needle electrode and the surface of the object to be sterilized form a needle-plate corona discharge, resulting in low temperature Plasma, to achieve sterilizing treatment.

Description

technical field [0001] The invention belongs to the technical field of sterilization and disinfection, and relates to a handheld sterilization and disinfection device, in particular to a handheld sterilizer based on low temperature plasma. Background technique [0002] In 2020, as the epidemic caused by the new coronavirus is raging around the world, in the process of fighting the epidemic, it is found that disinfection and sterilization has become a work that the whole people must pay attention to. Due to the commonly used fungicides, such as 84 disinfectant, alcohol, etc., there are many matters needing attention in daily use, and there are certain safety hazards in the process of storage and transportation. [0003] At present, sterilization and disinfection work does not only appear in special places such as hospitals, wards, and public areas. Due to the concept of daily sterilization brought about by the new crown epidemic and the virus that may appear in life that enda...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H1/48H05H1/26A61L2/14A61L2/24A61L2/26A61N1/44A23L5/20A23B7/144
CPCH05H1/48H05H1/26A61L2/14A61L2/24A61L2/26A61N1/44A23L5/20A23B7/144A61L2202/25A61L2202/14
Inventor 郭鑫周峻羽赵武于淼张凯陈领赵乾聂志浩
Owner SICHUAN UNIV
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