JP2001178785A - Sterilizing system of anatomizing room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a sterilizing HEPA filter built in an air supply port and an exhaust port of air conditioning air whose fumigation gas leads to the inside of a room so as to be completely sterilizable by the fumigation gas when sterilizing an anatomizing room by fumigation of a medicine. SOLUTION: In this anatomizing room having a fully outside air type air conditioning equipment for exhausting outside air outside through an exhaust duct from an exhaust port 13 with built-in sterilizing filter by supplying the outside air taken in through an air conditioner 5 to an anatomizing room 1 from an air supply port 8 for housing a sterilizing HEPA filter 7 through an air supply duct 6, a gas circulating duct 17 having a closing damper 17a and an air blowing fan 17b is connected between the air supply duct and the exhaust duct, closing dampers 6a, 14a are respectively provided in the air supply and exhaust ducts, fumigation gas of a sterilizing medicine burnt in the room at sterilizing processing time of the anatomizing room is circulated and ventilated in the room through the gas circulating duct, and the fumigation gas is made to flow to the air supply port and the exhaust port to completely sterilize the HEPA filter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to
The present invention relates to a sterilization system for an autopsy room for performing judicial dissection or preservative treatment, or an embossing room (preservative treatment room for a corpse).

[0002]

2. Description of the Related Art In hospitals, pathological laboratories, police, and funeral companies that process corpses, pathological anatomy, judicial anatomy,
In addition, a dissection room or an evaporating room is provided for performing preservative treatment and the like.

[0003] By the way, since many autopsy bodies die from infection with pathogens, the dissection room (including the evacuation room) is designed to prevent the dissector from becoming infected with pathogenic bacteria during autopsy. In addition to careful precautions, pathogens (bacteria and microorganisms) scattered in the dissection room along with blood, meat fragments, and bone fragments of the corpse that scattered from the dissection table to the surroundings, as well as equipment.
It is necessary to take measures against biohazard that does not escape from the dissection room to the outside.

[0004] Fig. 2 shows a conventional room air-conditioning and ventilation system for a dissection room and a dissection table provided in the room, which are known from Japanese Utility Model Publication No. 4-26090. In the figure, 1
Denotes an anatomical room constructed in a building, 2 denotes an anatomical table, and the figure shows a corpse 3 and an anatomist 4 placed on the anatomical table 2. As an air conditioner for the dissection room 1, an air conditioner 5, an air supply duct 6, a HEPA filter (high-performance filter) 7 as a disinfecting filter, which is provided on the ceiling side of the room, is provided. Air is supplied to the dissection room through the vent 8 at an appropriate temperature. The filter 7 prevents the pathogens floating in the room air from escaping outside through the air supply port 7 and the air supply duct 6, rather than purifying the outside air supplied to the room. Is provided for the main purpose.

A fan filter unit having a built-in HEPA filter 7 for disinfection on the ceiling side of the room in order to down-flow and send clean air disinfected from above toward the working space around the dissection table 2. In addition, the dissection table 2 has a built-in HEPA filter 7 for sterilization so that mist (possibly containing infectious pathogens) generated from the corpse 3 during dissection is sucked. And
Further, a duct 10 is provided between the dissection table 2 and the fan filter unit 9 on the ceiling side through the underfloor pit, a fan 11 is connected to the duct 10, and the intermediate point of the exhaust duct 10 is branched into two parts. One branch duct is connected to the fan filter unit 9 to recirculate a part of the exhaust air from the dissection table 2 to the indoor side, and the other branch duct exhausts the HEPA filter 7 for sterilization and a built-in exhaust fan. It is connected to the unit 12 so as to emit it to the outside air. In order to prevent room air from leaking to the outside from the dissection room 1 through a gap such as a door, the room pressure in the dissection room 1 needs to be maintained at a negative pressure with respect to the external pressure. In order to maintain the differential pressure between the inside and outside of the ventilation equipment, the exhaust air volume is generally larger than the intake air volume of the outside air.

On the other hand, as described above, microorganisms such as pathogenic bacteria floating in the air in the dissection room can be physically eliminated by the HEPA filter 7, but they are placed around the dissection table 2 by the autopsy operation. Microorganisms scattered and attached to the walls and floor of the dissection room 1 cannot be removed not only by ventilation of room air, but also
In this situation, pathogens can propagate and spread the contamination. Therefore, conventionally, a method has been adopted in which the dissection room 1 is hermetically sealed after or after the autopsy, and the operation of the air-conditioning and ventilation equipment is stopped, and then the medicine such as formaldehyde is fumigated to sterilize the interior. ing.

[0007]

However, the above-described conventional dissection room equipment has the following problems. That is, even if a chemical fumigation such as formaldehyde is performed in the dissection room, the fumigation gas is filled in the room and the bacteria floating in the room air and the bacteria adhering to the wall, floor, ceiling, etc. of the dissection room are not removed. Although it is sterilized, air supply to the dissection room 1
Since the blower fan of the exhaust duct is stopped, the inside of the air supply and exhaust ports becomes blind spots, and a built-in HEPA filter 7 for disinfection (the HEPA filter generally has a large filter collection area). The fumigation gas does not sufficiently penetrate deep into the folds of the filter material. Because of this, air supply,
It is difficult to completely sterilize the bacteria collected in the HEPA filter for sterilization at the exhaust port with fumigation gas.

[0008] The present invention has been made in view of the above points, and an object of the present invention is to solve the above-mentioned problems and to provide air-conditioning air through which fumigation gas flows into a dissection room when sterilizing a room by fumigation with a drug. HEP for disinfection equipped in air supply and exhaust ports
It is an object of the present invention to provide a disinfection room sterilization system improved so that fumigation gas is allowed to flow through the A-filter and the air supply / exhaust ducts connected to the air supply / exhaust ports so that these parts can be completely sterilized.

[0009]

According to the present invention, in order to attain the above object, according to the present invention, outside air taken in through an air conditioner is supplied into a room through an air supply duct through an air supply port provided with a sterilization filter. Thereafter, in a dissection room equipped with an exhaust air outlet equipped with a filter for sterilization and an all-outside air-conditioning system for exhausting the air to the outside via an exhaust duct, the fumigating gas of the sterilizing agent fired inside the dissection room during the sterilization treatment of the dissection room is used as described above. The air is circulated into the room via a gas circulation duct, and a fumigation gas is passed through a sterilization filter at an air supply port and an exhaust port for sterilization (claim 1).
Specifically, it is to be implemented in the following manner.

(1) The sterilization filter is a HEPA filter, and among the air supply and exhaust ports provided with the sterilization filter, the air supply port is provided on the ceiling side in the dissection room and the exhaust port is provided on the indoor side wall. At the same time, a closing damper is provided for each of the supply duct and the exhaust duct outside the junction with the gas circulation duct (claim 2).

(2) At the time of sterilization, a fan filter unit which is arranged on the ceiling side of the dissection room and downflows laminar air toward the dissection table, and is incorporated in the dissection table to inhale air from the upper peripheral area thereof. Simultaneously operating a fan with a built-in disinfecting filter, the chemical fumigant gas is also forced through the fan filter unit and the filter built into the dissection table to sterilize bacteria collected by the filter. ).

According to the above sterilization system, the fumigation gas of the sterilizing agent fired in the dissection room during the sterilization process in the room is supplied to the air supply duct, the exhaust duct, and the gas circulation duct to remove the air supply port and the exhaust port. It flows through the fungus filter (HEPA filter) and penetrates deeply inside the fold of the HEPA filter. Thereby, the pathogenic bacteria collected in the HEPA filter can be completely sterilized. In this case, by providing the exhaust port on the side wall of the dissection room,
There is no need for underfloor pit work for passing ducts, and construction costs are reduced. Furthermore, by operating the fan built into the dissection table at the time of drug fumigation and the fan filter unit for down flow arranged on the ceiling side of the room,
HE disinfection HE equipped with these fan filter units
The PA filter can be sterilized together with the air supply and exhaust port HEPA filters.

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention.
A description will be given based on the embodiment shown in FIG. In the drawings of the embodiment, members corresponding to those in FIG.

In this embodiment, the air supply port 8 for the conditioned air to be supplied from the air conditioner 5 to the dissection room 1 is provided on the ceiling side of the dissection room 1 and the exhaust port 13 is provided on the side wall of the room. A HEPA filter 7 for disinfecting bacteria is built in the air port 8 and the exhaust port 13. Here, the exhaust duct connected to the exhaust port 13 is drawn out to, for example, the roof of a building, connected to the exhaust unit 15 having a built-in deodorizing activated carbon filter 15a, and the exhaust fan 16 sucks room air and exhausts it into the atmosphere. I have to. Further, the gas circulation duct 17 extends between the air supply duct 6 connected to the air supply port 8 and the exhaust duct 14.
The gas circulation duct 17 includes a closing damper 17a and a blower fan 17b. Further, the gas circulation duct 1 is connected to the air supply duct 6.
7, a closing damper 6a is provided on the upstream side (outside) of the connection branch point of 7, and the exhaust duct 14 is provided with a closing damper 14a on the downstream side of the connection branch point of the gas circulation duct 17.
In addition, 18 is an outside air intake, and 19 is an outside air duct connecting between the outside air intake 18 and the air conditioner 5.

Further, as in the conventional example shown in FIG. 2, a fan filter unit 9 having a built-in HEPA filter 7 on the ceiling side of the dissection room 1 for down-flowing clean laminar air toward the dissection table 2 is provided. In addition, the base of the dissection table 2 is equipped with a mist (possibly containing infectious pathogens) generated from the corpse during the dissection, and is immediately sucked from the upper surface area of the dissection table with air. A fan 2a and a HEP for disinfection so as to return the air after disinfection to the room.
A filter 7 is built in.

With this configuration, in a normal use state, the closing damper 17a of the gas circulation duct 17 is closed, and the fan 17
b is stopped, and the closing dampers 6a and 14a of the air supply duct 6 and the exhaust duct 14 are released. The temperature of the outside air taken in through the outside air intake 18 is adjusted by the air conditioner 5 and the humidity is adjusted. The air is supplied into the dissection room 1 through an air supply port 8 having a built-in HEPA filter 7 for bacteria elimination via 6.
Further, from the room, air slightly larger than the supply air amount is discharged from the exhaust port 13 having the built-in HEPA filter 7 for sterilization via the exhaust duct 14, the exhaust unit 15, and the exhaust fan 16 to the outside. The dissection room 1 is entirely air-conditioned. Further, in the dissection room 1, the fan filter unit 9 on the ceiling side is installed in order to prevent the dissection operator from transmitting the pathogenic bacteria.
Then, the fans 9a and 2a built in the dissection table 2 are operated.

On the other hand, after the dissection of the corpse or at regular intervals, when disinfecting the dissection room 2 with fumigation gas by burning a drug such as formaldehyde in the room, the air supply duct 6
Damper 6a of the exhaust duct and closing damper 14a of the exhaust duct 14
And a closing damper 17a of the gas circulation damper 17
Is opened, and the fan 17b is switched to operation. This allows
The sterilized fumigation gas fired in the dissection chamber flows from the exhaust port 13 to the gas circulation duct 17 via the exhaust duct 14, and flows from the opposite end through the air supply duct 6 to the air supply port 8 again to return to the room. Circulate. By the circulation of this fumigation gas,
Since the fumigation gas also flows through the HEPA filter 7 for sterilization built in the air supply port 8 and the exhaust port 13, the infectious pathogens trapped inside the folds of this filter are completely sterilized.

In addition to the above-mentioned circulation of the fumigation gas,
Fan filter unit 9 arranged on the ceiling side of dissection room 1,
By operating the built-in fans 9a and 2a of the dissection table 2, the fan filter unit 9 and the HEPA filter 7 for disinfection built in the dissection table 2 can be simultaneously sterilized with fumigation gas.

[0019]

As described above, according to the sterilization system of the present invention, when sterilizing the interior of a dissection room by fumigation of a sterilizing agent and sterilizing the interior of the room, a blind spot occurs with conventional equipment and a sufficient sterilization effect is obtained. According to the present invention, a gas circulation duct is additionally connected between the supply duct and the exhaust duct for the HEPA filter for disinfection built in the supply port and the exhaust port that could not be obtained, and the sterilization process is performed. The fumigating gas is circulated through the gas circulation duct between the dissection room and the dissection chamber, so that the HEPA filter for sterilization built in the air supply port and the exhaust port on the way of the fumigation gas circulation path. Since the fumigation gas also flows through the infectious agent, the infectious pathogen collected deep inside the fold of the HEPA filter can be completely sterilized.

Further, since the exhaust port is arranged on the side wall surface in the dissection room, it is not necessary to directly connect the exhaust duct to the dissection table as in the conventional equipment, thereby eliminating the need for an underfloor pit for passing the exhaust duct. As a result, the construction and construction work of the dissection room can be simplified, and the construction cost can be reduced.

Further, the fan filter unit installed on the ceiling side in the dissection room and the fan built in the dissection table are operated simultaneously with the circulation of the sterilized fumigation gas, thereby incorporating the fan filter units. The sterilization of the HEPA filter for sterilization with fumigation gas can be performed simultaneously.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a dissection room sterilization system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of air conditioning and ventilation equipment used in a conventional dissection room.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 dissection room 2 dissection table 2 a dissection table built-in fan 5 air conditioner 6 air supply duct 6 a closing damper 7 HEPA filter for sterilization 8 air supply port 9 fan filter unit 13 exhaust port 14 exhaust duct 14 a closing damper 17 gas circulation duct 17a Closed damper 17b Fan

Claims (3)

[Claims] 1. An outside air taken in through an air conditioner is supplied into a room through an air supply duct from an air supply port with a filter for sterilization, and then externally supplied through an exhaust port and an exhaust duct with a filter for sterilization. In the dissection room equipped with an all-air-conditioning air-conditioning system that discharges air to the dissection room, a closed damper and a gas circulation duct equipped with a blower fan are connected between the air supply duct and the exhaust duct by piping, and the interior of the dissection room is sterilized during sterilization processing. The fumigation gas of the sterilizing agent fired in the above is circulated and ventilated into the room via the gas circulation duct, and the fumigation gas is passed through a sterilization filter of an air supply port and an exhaust port for sterilization. Dissection room sterilization system. 2. The sterilization system according to claim 1, wherein the sterilization filter is a HEPA filter, and among the air supply and exhaust ports provided with the sterilization filter, the air supply port is located on the ceiling side in the dissection room. A sterilization system for an anatomical room, wherein an exhaust port is provided on a side wall of a room, and a closed damper is provided outside a branch point of a gas circulation duct with respect to an air supply duct and an exhaust duct. 3. The sterilization system according to claim 1, wherein the fan filter unit is disposed on the ceiling side in the dissection room and downflows laminar air toward the dissection table during the sterilization process.
And a disinfecting room sterilization system, wherein the disinfecting room is installed in a dissection table and simultaneously operates a fan filter unit with a built-in disinfecting filter for sucking air from a peripheral area of the dissection table.