Sterilization apparatus and sterilization method

1. A sterilization apparatus for sterilizing, using sterilizer, an object in a sterilization chamber, comprising:

a direct conduit portion including a sterilizer pooling portion configured to pool sterilizer to be introduced;

a first conduit extending from the direct conduit portion to the sterilization chamber and configured to pass air contained in the direct conduit portion to the sterilization chamber while leaving the sterilizer pooled in the sterilizer pooling;

the sterilization chamber configured to sterilize the object using gasified sterilizer obtained by vaporizing the sterilizer pooled in the sterilizer pooling portion;

a first valve attached to the first conduit between the direct conduit portion and the sterilization chamber to control passing the air contained in the direct conduit portion to the sterilization chamber; and

a vacuuming device configured to vacuum the sterilization chamber,

wherein the sterilization apparatus, by opening and closing the first valve before introducing the sterilizer into the sterilization chamber, sucks, through the first conduit, the air contained in the direct conduit portion into the sterilization chamber which has been vacuumed by the vacuuming device while leaving the sterilizer pooled in the sterilizer pooling portion as it is, and performs vacuuming of the sterilization chamber using the vacuuming device.

2. The sterilization apparatus according to claim 1 , wherein the sterilization apparatus, by keeping the first valve open for a predetermined time and closing the first valve before introducing the sterilizer into the sterilization chamber, sucks, through the first conduit, the air contained in the direct conduit portion into the sterilization chamber which has been vacuumed by the vacuuming device while leaving the sterilizer pooled in the sterilizer pooling portion as it is, and performs vacuuming of the sterilization chamber using the vacuuming device.

3. The sterilization apparatus according to claim 2 , further comprising:

a concentration chamber configured to concentrate the sterilizer;

a vaporizing chamber configured to vaporize the sterilizer; and

a second valve configured to be opened and closed to control communication between the vaporizing chamber and the sterilizer pooling portion,

wherein after the sterilizer is introduced from the concentration chamber into the sterilizer pooling portion, gas contained in the measuring pipe is removed by opening the first valve for a predetermined time and closing the first valve, and then opening the second valve.

4. A sterilization method in a sterilization apparatus for sterilizing an object including a concentration chamber configured to concentrate a sterilizer, a vaporizing chamber configured to vaporize the sterilizer, a measuring pipe into which the sterilizer is introduced from the concentration chamber before introduced into the vaporizing chamber, a vacuuming device configured to vacuum the sterilization chamber, and a first valve configured to be opened and closed to control communication between the sterilization chamber and the measuring pipe, the method comprising:

removing gas contained in the measuring pipe from the measuring pipe by opening the first valve, after the sterilizer is introduced from the concentration chamber into the measuring pipe.

5. The sterilization method according to claim 4 , wherein in the removing the gas contained in the measuring pipe is removed from the measuring pipe by opening the first valve for a predetermined time, after the sterilizer is introduced from the concentration chamber into the measuring pipe.

6. The sterilization method according to claim 5 , wherein the sterilization apparatus further includes a second valve configured to be opened and closed to control communication between the vaporizing chamber and the measuring pipe; and

wherein, in the removing, the gas contained in the measuring pipe is removed by opening the first valve for a predetermined time and closing the first valve, and then opening the second valve, after the sterilizer is introduced from the concentration chamber into the measuring pipe.

7. The sterilization apparatus according to claim 1 , further comprising:

a vaporizing chamber configured to vaporize the sterilizer pooled in the sterilizer pooling portion;

a second conduit through which the sterilizer pooling portion and the vaporizing chamber are communicated with each other; and

a second valve provided to the second conduit through which the sterilizer pooling portion and the vaporizing chamber are communicated with each other,

wherein the conduit configured to pass air contained in the direct conduit portion while leaving the sterilizer pooled in the sterilizer pooling portion as it is and being provided to the direct conduit portion is the first conduit through which the direct conduit portion and the sterilization chamber are communicated with each other;

wherein the sterilization chamber sterilizes the object using the gasified sterilizer obtained by vaporizing the sterilizer in the vaporizing chamber, and

wherein the sterilization apparatus, by opening and closing the first valve before introducing the sterilizer pooled in the sterilizer pooling portion into the vaporizing chamber through the second conduit through which the sterilizer pooling portion and the vaporizing chamber are communicated with each other by opening the second valve, sucks, through the first conduit through which the direct conduit portion and the sterilization chamber are communicated with each other, the air contained in the direct conduit portion into the sterilization chamber which has been vacuumed by the vacuuming device while leaving the sterilizer pooled in the sterilizer pooling portion as it is, and performs vacuuming of the sterilization chamber using the vacuuming device.

8. The sterilization apparatus according to claim 7 , further comprising:

a third conduit through which the vaporizing chamber and the sterilization chamber are communicated with each other; and

a third valve provided to the third conduit through which the vaporizing chamber and the sterilization chamber are communicated with each other,

wherein the sterilization apparatus, by opening and closing the first valve, sucks, through the first conduit through which the direct conduit portion and the sterilization chamber are communicated with each other, the air contained in the direct conduit portion into the sterilization chamber which has been vacuumed by the vacuuming device, by opening the second valve after sucking the air contained in the direct conduit portion into the sterilization chamber, introduces the sterilizer pooled in the sterilizer pooling portion into the vaporizing chamber through the second conduit through which the sterilizer pooling portion and the vaporizing chamber are communicated with each other and, by opening the third valve, introduces the gasified sterilizer obtained by vaporizing the sterilizer by the vaporizing chamber, and

wherein the vacuuming device vacuums the sterilization chamber during the period prior to the gasified sterilizer obtained by vaporizing the sterilizer by the vaporizing chamber being introduced into the sterilization chamber by opening the third valve after the air contained in the direct conduit portion is sucked into the sterilization chamber by opening and closing the first valve.

9. The sterilization apparatus according to claim 1 , further comprising:

a vaporizing chamber configured to vaporize the sterilizer pooled in the sterilizer pooling portion,

wherein the sterilization chamber sterilizes the object using the gasified sterilizer obtained by vaporizing the sterilizer pooled in the sterilizer pooling;

wherein the conduit configured to pass air contained in the direct conduit portion while leaving the sterilizer pooled in the sterilizer pooling portion as it is and being provided to the direct conduit portion is the first conduit through which the direct conduit portion and the vaporizing chamber are communicated with each other;

wherein the sterilization apparatus, by opening and closing the first valve before introducing the sterilizer pooled in the sterilizer pooling portion into the vaporizing chamber, sucks the air contained in the direct conduit portion into the vaporizing chamber decompressed by being communicated with the sterilization chamber which has been vacuumed by the vacuuming device, and

wherein the vacuuming devices performs, during the period from when the air contained in the direct conduit portion is sucked into the vaporizing chamber to when the sterilizer pooled in the sterilizer pooling chamber is introduced into the vaporizing chamber, the vacuuming in a state in which the sterilization chamber and the vaporizing chamber are communicated with each other.

10. The sterilization apparatus according to claim 1 , further comprising a concentration chamber configured to concentrate the sterilizer,

wherein the direct conduit portion is a portion into which air, together with the sterilizer, is introduced via the concentration chamber, and

wherein the sterilizer pooling portion is a portion in which the sterilizer introduced into the direct conduit portion through the concentration chamber is pooled.