JP2007275168A - Door gas sealing part structure for ozonization warehouse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door gas sealing part structure for an ozone processing warehouse capable of preventing an ozone gas from leaking between the ozonization warehouse and an opening closing door. <P>SOLUTION: Packings 4 are provided twofold between an ozonization warehouse body 1 and the opening closing door 3 which closes the warehouse 2, can freely open and close, and be shut tight. Space 5 between an inside packing 4a and an outside packing 4b is connected to a suction pump 9 with an ejection passage 6, and an ozone gas leaked from the inside of the warehouse 2 are sucked and ejected into the ejection passage 6 via an ozone resolution catalyst 7 and a HEPA filter 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure of a door gas seal part of an ozone treatment cabinet.

2. Description of the Related Art An ozone processing chamber is known that disinfects and sterilizes instruments and bedding used in hospitals and nursing facilities using ozone gas. (See Patent Document 1)
In these ozone treatment cabinets, after the object to be sterilized is carried into the cabinet, the door is closed, and ozone gas is filled in the cabinet to perform the sterilization treatment. An ozone-resistant rubber seal packing material is used for the door portion that closes the carry-in opening of the ozone treatment chamber in order to ensure the sealability between the treatment chamber body and the door.

FIG. 1 is a schematic configuration diagram showing a door portion of a conventional ozone treatment cabinet. In an ozone treatment cabinet main body 1, an open / close door 3 that closes an entrance of a processing object to the inside 2 is rotatable and sealed. It is provided so that it can be locked. Ozone-resistant packing 4 is double mounted on the part where the open / close door 3 comes into contact with the ozone treatment cabinet body 1 to prevent leakage of ozone gas filled in the cabinet 2 during the disinfection and sterilization treatment. The packing 4 may be attached to the door 3 side or may be single.
JP 2001-1209063 A

  The conventional ozone gas storage door gas seal structure has a problem that if the ozone concentration in the storage chamber continues to be high, the packing material deteriorates due to the oxidation reaction of ozone gas, and the ozone gas tends to leak out. is doing.

  The present invention has been made to solve the above-described problems, and improves the sealing performance by improving the adhesion between the packing and the opening / closing door when the opening / closing door is closed with respect to the ozone treatment cabinet body. Accordingly, an object of the present invention is to provide a door gas seal part structure of an ozone treatment cabinet capable of preventing leakage of ozone gas.

  In order to solve the above problems, a double packing is provided between the ozone treatment chamber main body and the openable / closable openable / closable door that closes the inside of the chamber, and a space between the inner packing and the outer packing. And a suction pump are connected by a discharge passage, and ozone gas leaked from the inside of the storage is sucked into the discharge passage through an ozone decomposition catalyst and a HEPA filter.

  According to the present invention, by sucking the air in the space between the inner and outer packings with the suction pump, this space becomes a negative pressure state, and the adhesion between the packing and the ozone processing body or the open / close door is increased, and the suction pump The ozone gas sucked from the space can be decomposed and detoxified and released to the outside air.

  An embodiment of the present invention will be described with reference to FIG. In addition, description is abbreviate | omitted about the same part as the prior art demonstrated based on FIG. 1, and the code | symbol of drawing is demonstrated using the same code | symbol. The ozone treatment chamber main body 1 is provided with a discharge passage 6 for communicating the space 5 between the inner packing 4a and the outer packing 4b and the outside air, and the ozone decomposition catalyst 7 and the HEPA filter 8 are sequentially provided in the discharge passage 6. And a suction pump 9 are interposed. Further, a three-way solenoid valve 10 is interposed in the discharge passage 6 in front of the ozone decomposition catalyst 7, and a HEPA filter 11 is connected to one side of the three-way solenoid valve 10 to communicate with the outside air.

  After storing the object to be processed in the chamber 2 of the ozone processing chamber main body 1 configured as described above, the door 3 is closed and locked, filled with ozone gas, and sterilization processing is started. Even if ozone gas leaks out from the inner packing 4a during this processing time, the ozone gas is decomposed and rendered harmless by suction from the space 5 through the discharge passage 6, the ozone decomposition catalyst 7, and the HEPA filter 8 by the suction pump 9. Discharged outside the storage. When opening the opening / closing door 3 after the disinfection and sterilization treatment, the three-way solenoid valve 10 is switched so that air flows into the space 5 through the HEPA filter 11 and the negative pressure is released.

  As described above, according to the present invention, it is possible to reliably improve the sealing accuracy of the gas seal of the open / close door accompanying the increase in the size of the ozone treatment chamber or the increase in the ozone concentration in the chamber.

It is a block diagram which shows the prior art example of the door part of an ozone treatment store | warehouse | chamber. It is a block diagram which shows embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ozone processing body 2 Inside 3 Opening door 4 Packing 4a Inner packing 4b Outer packing 5 Space 6 Exhaust passage 7 Ozone decomposition catalyst 8 HEPA filter 9 Suction pump 10 Three-way solenoid valve 11 HEPA filter

Claims (1)

Double packing is provided between the ozone treatment chamber main body and the openable / closable openable / closable door that closes the inside of the chamber, and the space between the inner packing and the outer packing and the suction pump are discharged through the discharge passage. A door gas seal structure for an ozone treatment cabinet, wherein the ozone gas leaked from the inside of the chamber is sucked and discharged through an ozone decomposition catalyst and a HEPA filter in the discharge passage.