JP2001087325A - Sputum collecting unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sputum collecting unit capable of lengthening a life of a filter by reducing an exhaust amount of an exhauster. SOLUTION: An exhauster 3 for filtering the air in a small room 1 through an exhausting filter 2 to exhaust the air outdoor is provided in the room 1 capable of maintaining its predetermined hermitical sealability, and a circulating air flow unit 5 for filtering the air in the room 1 through a circulating filter 4 while circulating the air in the room 1 in the room 1 is provided in the room 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sputum collecting unit used for preventing spatter of bacteria when collecting sputum for tuberculosis test or the like, and more particularly, to controlling a negative pressure in a unit room with a small displacement. The present invention relates to a sputum collection unit that enables a long life of an exhaust filter.

[0002]

2. Description of the Related Art For example, sputum is collected from a patient in a tuberculosis test, and sputum is collected to prevent the tubercle bacillus from scattering into the air and infecting other patients in a hospital. Equipment called a collecting unit that does not disperse bacteria has been proposed and put into practical use.

[0003] In this sputum collecting unit, air in the small chamber is exhausted to a small chamber capable of maintaining a predetermined airtightness.
(High efficiency particulate air) An exhaust system is provided to filter the exhaust air to the outside of the room after filtering through a filter. The exhaust system purifies the exhaust gas and keeps the small room at a negative pressure to prevent the bacteria from scattering.

[0004]

By the way, in the conventional sputum collection unit, in order to keep the inside of the small room at a negative pressure, the air in the small room is always filtered by an exhaust filter by an exhaust device, and is continuously exhausted to the outside. However, in order to quickly filter bacteria scattered in the small chamber, it is necessary to set a large exhaust volume of the exhaust device, and thereby, the exhaust HEPA.
There is a problem that the life of the filter is shortened.

The present invention has been made in view of the above-mentioned problems of the conventional sputum collection unit, and has a reduced exhaust volume of an exhaust device.
It is an object of the present invention to provide a sputum collection unit that can extend the life of a filter.

[0006]

In order to achieve the above object, a sputum collection unit according to the present invention filters air in a small chamber through an exhaust filter and exhausts the air to a small chamber capable of maintaining a predetermined airtightness. In the sputum collection unit provided with the exhaust device, a circulating airflow device for filtering air with a circulation filter while circulating the air in the small room in the small room is provided. Here, the "predetermined degree of sealing" refers to a degree of sealing such that air in the small room does not flow out of the room except through the exhaust device.

[0007] The sputum collection unit of the present invention having the above-described structure can quickly filter bacteria in the small chamber by a circulating airflow device provided separately from the exhaust device. The exhaust amount can be reduced to the extent that the negative pressure is maintained, and the exhaust filter can be reduced in dirt to extend its life.

In this case, the circulating airflow device can filter the air in the small room together with the outside air sucked into the small room in response to the exhaustion by the exhaust device.

Thus, the filtered outside air can be supplied into the small room, and the small room can be kept more clean.

Furthermore, the air outlet of the circulating airflow device is formed near the entrance of the small chamber, and the air that exits from the entrance can be formed by the air that exits from the air outlet.

Thus, even when a patient or the like opens and closes the door, it is possible to prevent the air from flowing out of the small room.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the sputum collection unit of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the sputum collection unit of the present invention.
An example will be described. The sputum collecting unit is configured such that the air in the small chamber 1 is exhausted to a small chamber 1 capable of maintaining a predetermined airtightness.
An exhaust device 3 for filtering with the PA filter 2 and exhausting the air outside the room is provided, and a circulating air flow device 5 for filtering the air in the small room 1 with the circulating HEPA filter 4 while circulating the air in the small room is provided.

In the small room 1, a door 15 is provided so that a patient or the like can enter and leave, and a table 6 on which a sputum collecting device (not shown) is placed.

The exhaust device 3 keeps the inside of the small chamber 1 at a negative pressure by an exhaust fan 12 in order to keep the germs from flying out of the room.
It is filtered by the PA filter 2 and exhausted from the exhaust port 8 at the lower part of the small chamber. The exhaust port 8 is provided with a damper 8a,
When the exhaust device 3 is stopped, the outside air flows backward from the exhaust port 8 so that the air in the small chamber 1 does not flow out of the room. The damper 8a has an exhaust fan 1
2 that is automatically opened by the wind pressure during the operation of the exhaust fan 12 and closes when the exhaust fan 12 stops, or that includes a drive mechanism that opens and closes in accordance with the operation of the exhaust fan 12. Can be used. And
Outside air is sucked into the small chamber 1 from the intake port 7 in the upper part of the small chamber so as to replace the exhausted air. In this case, the outside air sucked from the intake port 7 is supplied to the small chamber 1 after being filtered by the circulating HEPA filter 4 of the circulating airflow device 5, whereby the small chamber 1 is always cleaned. Air is supplied.

On the other hand, the circulating airflow device 5 improves the cleanliness of the inside of the small chamber 1 and the circulating fan 9 and the circulating HEPA filter 4 in order to quickly filter the scattered bacteria by the circulating HEPA filter 4. Is installed near the intake port 7 above the small chamber. That is, the circulation airflow device 5
After the air in the small chamber 1 is taken in from the bypass passage 10 and filtered by the circulation HEPA filter 4 together with the outside air from the intake port 7, the air is supplied into the small chamber 1 from the outlet 11 on the ceiling.

The sputum collecting unit increases the cleanliness of the room and collects the scattered bacteria quickly, and an exhaust device that always keeps the inside of the small room under a negative pressure so as to prevent the scattered bacteria from being discharged outside the room. By adding 3 and
The bacteria in the small chamber can be quickly filtered and purified, and the exhaust volume of the exhaust device 3 can be reduced to a level that maintains the negative pressure, thereby extending the life of the exhaust HEPA filter 2. it can.

Next, FIG. 2 shows a second embodiment of the sputum collection unit of the present invention. In the sputum collection unit, the exhaust device 3 is configured to exhaust air in the small chamber 1 to a HEPA filter 2 for exhaust.
And the air is exhausted from the exhaust port 8 in the upper part of the small chamber, and the outside air is sucked into the small chamber 1 from the intake port 7 in the lower part of the small chamber so as to replace the exhausted air. The exhaust port 8 is provided with a damper 8a, and when the exhaust device 3 is stopped, the exhaust port 8
To prevent the outside air from flowing backward and the air inside the small chamber 1 from flowing out of the room.

In this case, the outside air sucked from the intake port 7 is directly supplied into the small chamber 1 without passing through the circulation HEPA filter 4 as in the first embodiment.

On the other hand, the circulating airflow device 5 simply circulates the air in the small room and filters it. The air in the small room 1 is taken in from the bypass passage 10 and supplied into the small room 1 from the outlet 11 on the ceiling. I do. In the bypass passage 10, a circulation HEPA filter 4 is disposed at an opening behind the table 6. Air circulated by the circulation airflow device 5 is filtered by the circulation HEPA filter 4 and supplied into the small chamber 1. You. A hood 13 is formed on the upper part of the table 6 so as to surround the opening of the bypass passage 10, so that air on the table 6 can efficiently pass the bypass passage 10.
Is to be sucked into.

That is, in this sputum collecting unit, the scattered bacteria are quickly circulated to the circulation
The first purpose is to filter the EPA filter 4 and prevent the air from being discharged outside the room. The outside air enters the small room without passing through the circulation HEPA filter 4.

The air outlet 11 of the circulating airflow device 5 is formed above the door 15 of the small chamber 1. The air coming out of the air outlet 11 prevents the air curtain 14 from flowing out of the inlet / outlet. Are formed. The air curtain 14 can prevent the air from flowing out of the small chamber 1 even when a patient or the like opens and closes the door 15.

This sputum collecting unit can quickly filter bacteria in the small chamber 1 by a circulation airflow device 5 provided separately from the exhaust device 3, thereby reducing the exhaust volume of the exhaust device. The pressure can be reduced to such an extent that the pressure is maintained, and the life of the exhaust HEPA filter 2 can be prolonged by reducing dirt.

The other configurations and operations of the sputum collection unit of the present embodiment are the same as those of the sputum collection unit of the first embodiment.

Although the embodiment of the present invention has been described above, the circulating fan 9 of the circulating airflow device 5 does not always need to be operated at all times.
It may be configured to stop automatically by a timer or the like.

[0026]

According to the unit for collecting sputum of the present invention,
By the circulating airflow device provided separately from the exhaust device, it is possible to quickly filter the bacteria in the small chamber,
The exhaust amount of the exhaust device can be reduced to the extent that the negative pressure is maintained, and the exhaust filter can be reduced in dirt and its life can be extended. The longer filter life reduces maintenance costs and lowers pressure loss, making it easier to maintain negative pressure, thereby ensuring safety against bacterial leakage outside the room. Is improved.

Further, the circulating airflow device filters the air in the small room together with the outside air sucked into the small room in response to the exhaustion by the exhaust device, thereby supplying the filtered outside air to the small room. The small room can be kept more clean. Further, the circulating airflow device filters the air in the small room together with the outside air sucked by the exhaust device, so that the filtered outside air can be supplied to keep the small room more clean.

Further, the air outlet of the circulating airflow device forms an air curtain for preventing the air from flowing out of the entrance, so that even when a patient or the like opens and closes the door, the air outflow in the small room is prevented. Can be prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first embodiment of a sputum collection unit of the present invention.

FIG. 2 is an explanatory view showing a second embodiment of the sputum collection unit of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Small chamber 2 Exhaust filter (HEPA filter) 3 Exhaust device 4 Circulation filter (HEPA filter) 5 Circulating air flow device 6 Table 7 Intake port 8 Exhaust port 9 Circulation fan 10 Bypass passageway 11 Outlet port 12 Exhaust fan 13 Hood 14 Air Curtain 15 door

Claims (3)

[Claims] 1. A sputum collection unit in which a small chamber capable of maintaining a predetermined degree of sealing is provided with an exhaust device for filtering air in the small chamber with an exhaust filter and exhausting the air outside the small chamber, the air in the small chamber is circulated in the small chamber. A sputum collection unit characterized by comprising a circulating airflow device for filtering with a circulating filter while performing. 2. The sputum collection unit according to claim 1, wherein the circulating airflow device filters the air in the small room together with the outside air sucked into the small room in response to the exhaust by the exhaust device. 3. The air flow outlet of the circulating air flow device is formed near the entrance of the small chamber, and an air curtain is formed to prevent air from flowing out of the entrance / exit by the air exiting from the air exit. 3. The unit for collecting sputum according to 1 or 2.