High-voltage electric field low-temperature plasma cold sterilization system circuit and device

A technology of low-temperature plasma and high-voltage electric field, which is applied in the fields of food electrical treatment, food science, food preservation, etc., can solve the problem that the inverter can only carry the load and cannot drive the capacitive load, so as to avoid the negative resistance effect and facilitate the promotion Reasonable effect of use and structure design

Active Publication Date: 2021-02-26
NANJING SUMAN PLASMA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the shortcomings of the prior art that the frequency converter can only carry inductive loads but cannot drive capacitive loads, and provides a high-voltage electric field low-temperature plasma cold sterilization system circuit, the output frequency and voltage of the power module are adjustable ; Make the harmonic current entering the voltage regulation module stable

Method used

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  • High-voltage electric field low-temperature plasma cold sterilization system circuit and device
  • High-voltage electric field low-temperature plasma cold sterilization system circuit and device
  • High-voltage electric field low-temperature plasma cold sterilization system circuit and device

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Embodiment 1

[0044] Please combine figure 2 , figure 2 It is a block diagram of a high-voltage electric field low-temperature plasma cold sterilization system circuit of the present invention.

[0045] A high-voltage electric field low-temperature plasma cold sterilization system circuit, including a power supply module 100 for outputting harmonic current, a voltage regulation module 200 for adjusting load voltage, current and power, and a switch module 300 for adjusting the opening and closing state of the circuit And a transformer power supply module 400 that generates high voltage.

[0046] The power module 100 can be externally connected with a single-phase power input or a three-phase power input, and can output a single-phase voltage. The output voltage of the power module 100 is controllable, and the harmonic component in the output SPWM sinusoidal pulse width modulation wave is effectively suppressed, and the frequency spectrum is expanded, so that the harmonic current entering...

Embodiment 2

[0057] Please combine image 3 , image 3 It is the circuit diagram of the high-voltage electric field low-temperature plasma cold sterilization system circuit. The high-voltage electric field low-temperature plasma cold sterilization system circuit of the present embodiment, wherein the power module 100 includes a single-phase frequency converter 110, and the single-phase frequency converter 110 includes two input terminals, which are connected with a single-phase power supply (such as AC220). The output terminal T1 of 110 is connected to one end of the first-stage inductor 120 , and the other end of the first-stage inductor 120 is connected to the voltage regulation module 200 ; the output terminal T3 of the single-phase inverter 110 is connected to the voltage regulation module 200 . According to needs, a capacitor can also be connected in parallel between the two output terminals T1 and T3 of the single-phase inverter 110 to enhance the filtering effect.

[0058] recombi...

Embodiment 3

[0064] Please combine Figure 4 , the high-voltage electric field low-temperature plasma cold sterilization system circuit of this embodiment, its basic circuit connection mode is the same as that of Embodiment 2, and the improvements are:

[0065] The power module 100 includes a three-phase inverter 130. The three-phase inverter 130 includes three input terminals connected to a three-phase power supply (such as AC380). The output terminal T1 of the three-phase inverter 130 is connected to one end of the first-stage inductor 120. The other end of the primary inductor 120 is connected to the voltage regulation module 200 ; the output terminal T3 of the three-phase inverter 130 is connected to the voltage regulation module 200 . According to needs, a capacitor can also be connected in parallel between the two output terminals T1 and T3 of the three-phase inverter 130 to enhance the filtering effect. The use of three-phase inverters can be applied to some situations that need to...

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Abstract

The invention discloses a high-voltage electric field low-temperature plasma cold sterilization system circuit and device, and belongs to the technical field of frequency converter power circuits. Thehigh-voltage electric field low-temperature plasma cold sterilization system circuit comprises a power module used for outputting harmonic currents, a voltage regulating module used for regulating the load voltage, the load current and the load power, a switch module used for regulating the on-off state of the circuit and a transformer power supply module used for generating high voltage, whereinthe power module comprises a single-phase frequency converter and a first-stage inductor; the frequency converter comprises an input end and two output ends, the input end is connected with an alternating-current power supply, and the output ends are connected with the voltage regulating module; and the inductor is connected between the output ends of the frequency converter and a voltage regulator in series, so that the function of an electric reactor is achieved, harmonic components in SPWM waves output by the frequency converter are effectively restrained, the frequency spectrum is broadened, the harmonic currents entering the voltage regulating module are stable, the heating loss of the voltage regulating module is reduced, and the voltage regulating module is prevented from being burnt down.

Description

technical field [0001] The invention relates to the technical field of frequency converter power circuits, and more specifically relates to a high-voltage electric field low-temperature plasma cold sterilization system circuit and device. Background technique [0002] Plasma is the fourth state of matter. It consists of an ionized conductive gas, which includes six typical particles, namely electrons, positive ions, negative ions, atoms or molecules in an excited state, atoms or molecules in a ground state, and photons. [0003] The ions, electrons, excited atoms, molecules and free radicals enriched in the low-temperature plasma space are all active particles, which are easy to react with the material surface. Therefore, it is widely used in sterilization, surface modification, thin film deposition, etching processing, device cleaning and other fields. [0004] High-voltage electric field low-temperature plasma cold sterilization is a new type of food cold sterilization t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/015A23L3/32
CPCA23L3/0155A23L3/32A23V2002/00A23V2300/12
Inventor 万良淏姚俊万京林
Owner NANJING SUMAN PLASMA TECH CO LTD
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