# US 10,369,241 B2 · Sterilization apparatus and sterilization method using same

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- Number: US 10,369,241 B2
- Document ID: US10369241B2
- Status: Granted
- Kind: B2
- Application number: 14/902,494
- Filed: 2014-06-25
- Published: 2016-12-29
- Granted: 2019-08-06
- Earliest claimed: 2013-07-15
- Assignees: Cmtech Co., Ltd.
- Applicants: Cmtech Co., Ltd.
- Inventors: Heung Sik Min; Young Keun Ahn; Sung Jin Yang; Jong Wook Kim
- Web page: https://patentgrep.com/patent/US10369241B2

## CPC

- A61L 2/208: Hydrogen peroxide
- A61L 2202/11: Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
- A61L 2202/122: Chambers for sterilisation
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)

## Abstract

Provided are a sterilization apparatus including a sterilization chamber, a vacuum pump connected to one side of the sterilization chamber, a vaporizer connected to another side of the sterilization chamber, and a collector having one side connected to the vaporizer and the other side connected to the sterilization chamber and a sterilization method using the sterilization apparatus. In the sterilization apparatus and the sterilization method, a hydrogen peroxide solution having a concentration of 95 wt % or higher may be obtained through multiple concentration steps and used as a sterilant, thereby considerably improving a sterilization effect.

## Claims

### Claim 1

A sterilization apparatus, comprising:
a sterilization chamber;
a vacuum pump connected to one side of the sterilization chamber;
a vaporizer connected to another side of the sterilization chamber;
a collector having one side connected to the vaporizer and the other side connected to the sterilization chamber;
a vaporization valve disposed between the sterilization chamber and the collector,
wherein the vaporization valve is also disposed between the sterilization chamber and the vaporizer;
a collection valve disposed between the sterilization chamber and the collector,
wherein the vaporization valve and the collection valve are connected in parallel between the sterilization chamber and the collector;
a first connecting pipe connecting the collector and the vaporization valve;
a second connecting pipe connecting the vaporization valve and the sterilization chamber;
a third connecting pipe connecting the collector and the collection valve;
a fourth connecting pipe connecting the collection valve and the sterilization chamber; and
a fifth connecting pipe connecting the vaporizer and the vaporization valve.

### Claim 2 (depends on 1)

The sterilization apparatus of claim 1,
wherein the vaporization valve has one side connected to the sterilization chamber; and
wherein the other side of the vaporization valve is connected to the vaporizer and is connected to the collector.

### Claim 3 (depends on 1)

The sterilization apparatus of claim 1, wherein the first and second connecting pipes have a larger inner diameter than the third or fourth connecting pipe and the fifth connecting pipe.

### Claim 4

A sterilization apparatus comprising:
a sterilization chamber;
a vacuum pump connected to one side of the sterilization chamber;
a vaporizer connected to another side of the sterilization chamber;
a collector having one side connected to the vaporizer and the other side connected to the sterilization chamber;
a collection valve and a fumigation valve disposed between the sterilization chamber and the collector,
wherein the collection valve and the fumigation valve are connected in parallel between the sterilization chamber and the collector;
a vaporization valve disposed between the sterilization chamber and the vaporizer,
wherein the vaporization valve has one side connected to the sterilization chamber, and
wherein the other side of the vaporization valve is connected to the vaporizer and the vaporizer is connected to the collector;
a first connecting pipe connecting the vaporizer and the vaporization valve;
a second connecting pipe connecting the vaporization valve and the sterilization chamber;
a third connecting pipe connecting the collector and the collection valve;
a fourth connecting pipe connecting the collection valve and the sterilization chamber;
a fifth connecting pipe connecting the collector and the fumigation valve;
a sixth connecting pipe connecting the fumigation valve and the sterilization chamber; and
a seventh connecting pipe connecting the vaporizer and the collector.

### Claim 5 (depends on 4)

The sterilization apparatus of claim 4, wherein the fifth and sixth connecting pipes have a larger inner diameter than the first or second connecting pipe, the third or fourth connecting pipe, and the seventh connecting pipe.