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Handheld low-temperature plasma sterilization instrument

A low-temperature plasma and hand-held technology, which is applied in the field of hand-held sterilization and disinfection devices and hand-held sterilizers, can solve the problems of inability to sterilize, weak penetrating power, low ultraviolet radiation energy, etc., achieve good sterilization effect and improve stability Effect

Active Publication Date: 2021-08-31
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 sterilization instrument
  • Handheld low-temperature plasma sterilization instrument
  • Handheld low-temperature plasma sterilization instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The hand-held low-temperature plasma sterilizer provided in this embodiment, such as figure 1 As shown, it includes a housing 1, a high-voltage electrode assembly disposed in the housing, a circuit board, a high-voltage discharge circuit and an operating mode control circuit disposed on the circuit board, and a control unit for controlling the high-voltage discharging circuit and the operating mode control circuit .

[0053] Such as figure 1 As shown, the housing 1 includes a head 11, a middle part 12 and a handle 13 which are integrated from top to bottom. Such as 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 mounted on it are installed in the middle part 12 of the housing. The handle 13 is designed with corrugated grooves for easy handling. The side of the casing is designed with a slide switch 2 ...

Embodiment 2

[0073] The hand-held low-temperature plasma sterilizer provided in this embodiment is further improved on the hand-held low-temperature plasma sterilizer provided in Embodiment 1, and the DC corona discharge circuit in Embodiment 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 consists of an AC power supply, an autotransformer T11, an isolation transformer T12, a halo-free test transformer T13 and a coupling capacitor C11; the two ends of the autotransformer T1 are connected in parallel to the two ends of the AC power supply, and the The sliding contact is used as an electrical signal output terminal; 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 side, the two en...

Embodiment 3

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

[0080] In order to be applicable to different environments, the handheld low-temperature plasma sterilizer provided in this embodiment can meet five working modes: hand sterilization mode under DC corona discharge circuit, fresh fruit and vegetable sterilization mode and whole house sterilization mode, and AC corona discharge circuit The mild whole house sterilization mode and the whole house sterilization mode.

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

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Abstract

The invention discloses a handheld low-temperature plasma sterilization instrument, and the sterilization instrument comprises a shell; a high-voltage electrode assembly and a circuit board which are arranged in the shell; a high-voltage discharging circuit and a working mode control circuit which are arranged on the circuit board; and a control unit which is used for controlling the high-voltage discharging circuit and the working mode control circuit. The high-voltage electrode assembly comprises a high-voltage positive plate and needle electrodes installed on the high-voltage positive plate and matched with the nozzles in number. The needle electrodes in the spraying area are divided into a plurality of groups; the high-voltage discharge circuit comprises an alternating-current corona discharge circuit or / and a direct-current corona discharge circuit mounted on a circuit board; and the working mode control circuit is arranged between the high-voltage output end of the high-voltage discharge circuit and the high-voltage electrode assembly. The output end of the high-voltage discharge circuit is connected with more than one group of needle electrodes in an injection area through a working mode control circuit; the surface of the to-be-sterilized object is used as a negative electrode, the corresponding needle electrode and the surface of the to-be-sterilized object form needle-plate corona discharge, low-temperature plasma is generated, and sterilization treatment is achieved.

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 low-temperature plasma-based handheld sterilization instrument. Background technique [0002] In 2020, due to the epidemic caused by the new coronavirus raging around the world, it has become a task that the whole people must pay attention to in the process of fighting the epidemic. 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 is not limited to 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 possible viruses that may appear in life that endanger people's health, househo...

Claims

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Application Information

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Patent Type & Authority Applications(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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