JPH08266596A - In-hospital automatic sterilizing and disinfecting device - Google Patents

Abstract

PURPOSE: To make it possible to expedite the drying time in a room, to shorten the working time and to surely sterilize and disinfect floating teeth and stuck teeth by mounting a fan and filter which are driven to recover a superfine particle disinfectant after the end of injection by two-fluid nozzles at a movable truck. CONSTITUTION: This in-hospital automatic sterilizing and disinfecting device is mounted at the freely movable truck 1 and a cover 2 having an approximately circular conical shape cover is mounted atop this truck 1. A rotating body 3 is freely horizontally turnably mounted at the upper part of the movable truck 1. This rotating body 3 turns in a horizontal direction when a motor 16 is driven. The compressed air from a compressor 10 and the disinfectant from a disinfectant tank 24 are then sprayed from the two-fluid nozzles 27 (27A, 27B) toward the respective directions in the room. The fan 17 is driven in the initial period of spraying of the disinfectant. The washing and drying of the liquid contact parts of the two-fluid nozzles 27 are executed when the spraying of the disinfectant is finished. The fan 17 is thereafter driven again to suck the disinfectant in the air. The disinfectant is recovered by a filter 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic sterilizer for hospitals, and more particularly to an operating room, hospital room, clean room,
In order to prevent nosocomial infections caused by bacteria or the like floating in the hospital environment such as a preparation room or adhering to walls, floors, etc., a disinfectant is sprayed to effectively perform sterilization treatment.
It can also be used in facilities such as food factories that require sterilization.

[0002]

2. Description of the Related Art Recently, nosocomial infections have rapidly increased in hospitals, and in particular, multi-drug resistant MRSA (Methicillin Resistant Staphylococc), which is ineffective against antibiotics, has become a problem.
usaureus: Methicillin-resistant Staphylococcus aureus) or Pseudomonas aeruginosa infected with premature infants, the elderly, or people with weakened resistance such as cancer patients, the bacteria multiply and pneumonia, enteritis, purulent skin, sepsis In some cases, this may lead to death.

Since the above MRSA has multidrug resistance to other antibacterial agents, the effect of antibiotics is weak, and therapeutic drugs and treatment methods are still under development. Therefore, sterilizing and disinfecting the MRSA before infection. That is an urgent issue.

The above-mentioned MRSA occurs most frequently in the operating room where surgery is carried out on carrier patients. In addition, it spreads around the bed of a carrier patient, through the clothes of doctors, nurses and hospital workers, air conditioning, etc. from the carrier patient, and through medical equipment that is not sufficiently disinfected. Therefore, in addition to the operating room, especially MR
It is necessary to sterilize and disinfect places where SA is likely to occur frequently, and in order to perform the sterilization, adherent bacteria attached to floors, walls, ceilings and beds, shelves, medical equipment, etc. surrounding the space. And it is necessary to sterilize both floating bacteria floating in the space.

In response to the above demands, the present applicant has previously provided an in-hospital automatic sterilization device disclosed in Japanese Utility Model Laid-Open No. 5-176977. The above-mentioned automatic sterilizer for hospitals is shown in FIG.
As shown in FIG. 3, a compressor 103 for air compression equipped with a drive motor 102, a filter 104 for feeding clean air to the compressor 103, and a control means are provided inside a main body 101 of a mobile trolley 100. 1
05 and so on. Further, on the upper part of the main body 101, a rotating frame body 106 is attached so as to be rotatable in a horizontal direction, and a rotating body 107 that rotates in a vertical direction is attached to the rotating frame body 106. A two-fluid nozzle 109 for mixing and injecting the compressed air from the compressor 103 and the disinfectant from the disinfectant tank 108 is attached. In addition, the fan 11 is installed inside the rotating body 107.
By providing 0, and driving the fan 110, the flight distance of the fine particle disinfectant to be sprayed is increased, and the disinfectant can be diffused and sprayed.

[0006] The automatic sterilization device in the hospital is moved to the center of the room for sterilization, and is arranged.
While rotating the rotating body 107, the disinfectant mixed with compressed air in the form of fine particles is jetted from the two-fluid nozzle 109 to fill the fine particle disinfectant more than the inside of the room is saturated. Then, leave the room in the saturated state for a required time, sterilize floating bacteria in the air, and adherent bacteria such as walls and ceilings, and then the disinfectant in the air falls on the floor by its own weight, Bacteria attached to the floor are sterilized.

[0007]

However, in the above-mentioned hospital automatic sterilization apparatus, as described above, the particulate disinfectant mixed with the compressed air is saturated in the room, that is, up to the supersaturated state. Since most of the disinfectant in the air falls on the floor as time passes, the upper surface of the floor or the like becomes excessively wet because it is injected and filled. After sterilizing and disinfecting with the disinfectant as described above, it is necessary to dry the room, but as described above, if the upper surface of the floor or the like becomes excessively wet, there is a problem that it takes a long time to dry.

In particular, when the room to be sterilized is an operating room of a hospital, it is necessary to use it efficiently, and it is very inconvenient if the drying time is long. In addition, as described above, if the floor or the like becomes excessively wet with the disinfectant, resistant bacteria may occur.

Therefore, when it is desired to use the room quickly after disinfection, it is necessary for an operator to wipe the floor excessively wet with the disinfectant using a mop or the like. In that case, since the bacteria are often attached to the mop itself, the bacteria may be attached indoors.

The present invention has been made in view of the above problems, and is an improvement of the automatic sterilizing and disinfecting apparatus in a hospital previously filed by the applicant of the present invention to shorten the drying time in the room and shorten the working time.
Moreover, it is an object of the present invention to provide an in-hospital automatic sterilization device capable of surely sterilizing suspended bacteria and attached bacteria.

[0011]

In order to achieve the above object, the present invention provides a two-fluid nozzle for injecting a disinfectant with compressed air and ejecting it as ultrafine particles according to claim 1, and supplying the two-fluid nozzle to the two-fluid nozzle. A disinfectant tank containing a disinfectant, and a compressor that supplies compressed air to the two-fluid nozzle,
Supply means for supplying the disinfectant and compressed air to the two-fluid nozzle, rotating means for changing the ejection direction of the two-fluid nozzle, and driving at least after the end of ejection by the two-fluid nozzle to drive the ultra-fine particle disinfectant. (EN) Provided is an automatic sterilization device in a hospital, wherein a fan and a filter to be collected are mounted on a portable carriage.

The above-mentioned fan may be provided as a separate unit and mounted on the trolley, or may be previously connected to another device and provided integrally. Further, the rotating means may be variable in both the horizontal direction and the vertical direction, or may be variable in only one of the horizontal direction and the vertical direction.

Further, the present invention according to claim 2 is provided with control means for controlling the spraying time from the two-fluid nozzle, the injection direction, and the driving time of the fan, and by the control means,
The automatic sterilization apparatus for in-hospital according to claim 1, wherein the control is performed so that the fan is selected and driven only when the ultra-fine particles are ejected from the two-fluid nozzle, at the end of the injection, or only after the end of the injection. are doing.

The above-mentioned spraying time is controlled by, for example, putting the amount of the disinfecting liquid in a control means composed of a predetermined amount of tank and spraying until the predetermined amount of the disinfecting liquid in the tank is exhausted. You may

Further, it is preferable that the above-mentioned ultrafine particles to be sprayed according to the present invention are sprayed until the visibility becomes about 4 m and becomes a supersaturated state. The field of view of 4 m is 30 cm in diameter
When the black disc is placed 4 m ahead, it is invisible.

Specifically, the apparatus of the present invention is, for example, a portable carriage, in which a rotating body is horizontally rotatably mounted on an upper part of a vehicle body having a substantially trapezoidal cone shape, and a two-fluid body is provided from the rotating body. The nozzle is projected, and a dolly provided with wheels is attached to the lower surface of the vehicle body so that it can be moved. Inside the car body, the compressor and fan are built in, a part of the side wall of the car body is opened and a filter is attached, the disinfectant to be collected is removed by the filter by the rotation of the fan, and the initial spray of the disinfectant is performed. It is also rotated to spray a mist of disinfectant and the mist diffuses quickly. The rotating body accommodates a disinfectant tank for supplying the two-fluid nozzle.

Further, a sterilizing water tank is mounted inside the rotating body in addition to the disinfectant tank, and the disinfectant is sprayed and then sterile water is sprayed to clean the liquid contact portion of the two-fluid nozzle. After that, compressed air is blasted to dry the inside of the two-fluid nozzle. Also,
After cleaning the nozzle with sterilized water, only compressed air is supplied to dry the nozzle, and after all of these injections are completed, the fan is driven to collect the ultrafine particle disinfectant filled in the room. I am trying to do it.

[0018]

According to the automatic sterilizing / disinfecting apparatus for hospitals according to claim 1 of the present invention, the disinfectant in the disinfectant tank and the compressed air from the compressor are supplied to the two-fluid nozzle by the supplying means, and the two-fluid is used. Compressed air and a disinfectant are mixed by a nozzle and sprayed as ultrafine particles. At the time of this spraying, the rotating body provided with the two-fluid nozzle is rotated in the horizontal direction, and the disinfectant is uniformly sprayed in each direction in the room for sterilization. Since the disinfectant is sprayed as ultrafine particles, the disinfectant stays in the air for a long time, and the suspended bacteria can be effectively sterilized.

The above disinfectant is sprayed until the inside of the room becomes saturated, that is, until it becomes supersaturated, and the disinfectant in the form of mist drops by its own weight and wets the floor surface. To sterilize. Also, by driving the above fan after the end of injection, the disinfectant staying in the air is collected to prevent the floor surface from getting excessively wet with the disinfectant, and the floor surface must be wet to the minimum necessary. This hastened the drying time in the room.

According to the automatic sterilization apparatus for hospitals according to the second aspect of the present invention, the control means controls the spraying time from the two-fluid nozzle, the jetting direction and the driving time of the fan. Disinfection can be performed automatically. Further, by driving the fan even during the initial spraying of the disinfectant, the flight distance of the ultrafine particle disinfectant can be increased, and the disinfectant can be diffused and sprayed more uniformly inside the room. Further, since the fan is driven even after the spraying of the disinfectant is completed, the spray can be collected and the indoor drying time can be shortened as described above.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. As shown in FIGS. 1 to 3, the in-hospital automatic sterilization apparatus of the present invention is mounted on a movable carriage 1 and a cover 2 having a substantially conical shape on the top surface of the carriage 1.
, And the rotating body 3 is mounted on the upper part of the portable cart 1 so as to be rotatable in the horizontal direction.

The dolly 1 has three support frames 1b which are bent upward in a direction approaching the circular bottom plate 1a.
Are projectingly provided, the upper ends of the support frames 1b are connected by a horizontal connecting plate 1c, and the cover 2 is attached to the outer surfaces of the support frames 1b. Four wheels 6 for movement are attached to the bottom plate 1a of the carriage 1 along the outer periphery thereof.

On the upper surface of the bottom plate 1a of the dolly 1, a compressor 10 for pneumatic compression having a built-in drive motor, an electric box 11 as a control means for accommodating electric parts constituting a drive circuit of the entire apparatus, and It is equipped with a cord reel 12. Further, a rotating motor 15 for driving the rotating body 3 and a fan 17 having a driving motor 16 are attached to the lower surface of the connecting plate 1c and housed inside the carriage 1. The output shaft of the rotating motor 15 is projected into the rotating body 3 through the connecting plate 1c.

The fan 17 is positioned inside the cover 2 via a support shaft 17a supported by a required support frame 1b. Further, the cover 2 is provided with an opening 2a at a lower part thereof, and a filter 18 is attached to the opening 2a.
With this configuration, after the spraying is finished, the fan 17 is driven to suck in the disinfectant staying in the air, remove it with the filter 18, and collect the excessive disinfectant. I try not to get wet.

As shown in the drawing, the rotating means of the rotating body 3 is housed in the inside of a rotating body cover 5 having a truncated cone shape with openings at both upper and lower ends. That is, the rotating means includes the small-diameter gear 20 and the small-diameter gear 2 attached to the output shaft of the rotating motor 15.
The large-diameter gear 21 meshes with 0, and the rotating plate 22 fixed to the upper surface of the support shaft interlocking with the large-diameter gear 21.

On the upper surface of the rotating plate 22, a disinfectant tank 24, a sterilizing water tank 25, a three-way solenoid valve 26, and 2
Two two-fluid nozzles 27A and 27B are installed, and the cover 5 is fixed to the rotary plate 22 so that the rotary body 3 composed of these components can rotate integrally. And,
The two-fluid nozzle 27 is projected from the cover 5 to the outside,
The two-fluid nozzle 27 is moved in the circumferential direction according to the rotation of the rotating body so that the spray can be performed in the entire circumferential direction. Also,
The upper part of the disinfectant tank 24 is projected from the upper end opening of the cover 5 so as to be continuous with the cover 5 and have an egg shell shape.

A box-shaped tank receiver 30 having an upper opening is fixed to the rotating plate 22, and an upper opening 30a of the tank receiver 30 is fixed.
On the other hand, the disinfectant tank 24 is detachably attached. The disinfectant tank 24 is provided with a cap 28 that closes an opening for injecting the disinfectant, a supply hole (not shown) is provided in the cap 28, and a lid (not shown) urged by an inner opening of the supply hole by a spring. The disinfectant stored inside is prevented from flowing out.

As shown in FIG. 4, the tank receiver 30 is provided with a shaft portion 32 projecting from the bottom surface, and the shaft portion 32 presses the lid of the disinfectant tank 24 attached to the tank receiver 30 to open the supply port. An opening is provided so that the disinfectant inside the disinfectant tank 24 can flow into the tank receiver 30.
Further, a float switch 31 is provided inside the tank receiver 30, and when the inside of the tank receiver 30 runs out of disinfectant, a signal is sent to the control panel in the electric box 11 and an output from the control panel causes a three-way electromagnetic wave. Send a signal to valve 26, 3
The flow path of the one-way solenoid valve 26 is switched.

The sterilized water tank 25 is detachably clamped and fixed to a pair of spring pieces (not shown) projecting from a recessed portion of the cover 5 of the rotating body 3 which bulges outward.

The three-way solenoid valve 26 is the tank receiver 30.
Is installed on the rotating plate 22 in the vicinity of the three-way solenoid valve 2
6 is connected to the tank receiver 30 via a liquid tube 34. Further, the three-way solenoid valve 26 is connected to the sterilized water tank 25 via the liquid tube 35, and is connected to the nozzle adapter 41B of the one two-fluid nozzle 27B via the liquid tube 36.

The above-mentioned two-fluid nozzle 27 (27A, 27B)
Is each nozzle adapter 41 (41A, 41B)
The connecting plate 42 that is connected to the tank holder 30 positions and fixes the tank receiver 30 at a required height through the support plate 43 on the opposite side. Further, the cover 5 has the two-fluid nozzle 27.
The opening 5a is provided in a part facing the above, and the pair of two-fluid nozzles 27A and 27B are projected to the outside of the cover 5 as described above. Further, the air sucked by the fan 17 flowing into the inside of the rotating body 3 through the through hole formed in the rotating plate 22 from the gap between the opening 5a and the two-fluid nozzle is passed through the nozzles 27A and 27B. The sprayed disinfectant is sprayed over a wider area and the flight distance is extended.

An air hose 45 having one end connected to the compressor 10 is connected to the nozzle adapter 41A, while a liquid tube 36 having one end connected to the three-way solenoid valve 26 is connected to the nozzle adapter 41B. . The nozzle adapters 41A and 41B are connected to each other by connecting pipes 46 and 47, and the connecting pipe 46 allows compressed air from the compressor 10 to flow through the nozzle adapter 41.
In addition to supplying to B, the chemical solution or sterilizing water is supplied to the nozzle adapter 41A by the connecting pipe 47.

The two-fluid nozzle 27 (27A, 27B)
As shown in FIGS. 5 (A) and 5 (B), a large-diameter compressed air inflow passage 51 is provided along the axis of the nozzle adapter 41 (41A, 41B), and the disinfectant liquid inflows to one side. A passage 50 is provided. The disinfecting liquid inflow passage 50 is provided with an inflow portion 50a and two small-diameter flow portions 50b, 5b that are bent from the inflow portion 50a and are provided in parallel with the compressed air inflow passage 51.
0c. A two-fluid nozzle 27 is attached to the tip of the nozzle adapter 41 with a rubber packing 58 interposed. A through hole is formed in the rubber packing 58, and the compressed air circulating portion 51 is connected to the nozzle casing 52 through the through hole.
To communicate with one of the compressed air passages 56A and 56B,
In addition, the disinfectant inflow passages and 50 are communicated with the disinfectant passages 54A and 54B of the nozzle casing 52, and the compressed air and the disinfectant are mixed by the jet ports 55A and 55B at the opposite ends of the nozzle casing 52 to spray the two fluids. are doing.

The compressor 10 and the rotating motor 1
5, the drive motor 16 of the fan 17, and the three-way solenoid valve 26 are connected to the internal circuit of the electric box 11 by electric wires (not shown). A control panel (not shown) provided inside the electric box 11 presets the disinfectant spraying direction and the drive time of the fan 17, and the start switch 60 provided on the surface of the cover 2 is turned on. Then, the device operates fully automatically to sterilize. In this embodiment, the spraying time of the disinfectant is set according to the amount of the disinfectant inside the disinfectant tank 24, and is controlled when the float switch 31 detects that the disinfectant has disappeared inside the tank receiver 30. A signal is sent to the board to switch the flow path of the three-way solenoid valve 26. When the spray of the disinfectant is completed, the two-fluid nozzle 2
Sterile water is automatically supplied to 7A and 27B for the required time, and then only compressed air is automatically supplied for the required time, and the wetted parts are controlled to be inserted.

When sterilization is performed by the hospital automatic sterilization apparatus having the above-mentioned configuration, for example, the carriage 1 is moved to and stopped near the center of the operating room or hospital room, and the start switch 60 is turned on.
In the N state, the worker leaves the room and seals the room.
When the start switch 60 is turned on, about 10 seconds later, the compressor 10, the rotation motor 15, and the fan 1
7 (drive motor 16) is driven. As a result, the rotating body 3 is horizontally rotated via the small-diameter gear 20, the large-diameter gear 21, and the rotating plate 22, and the compressed air from the compressor 10 and the disinfectant tank 24 are directed in each direction in the room. The disinfectant is sprayed from the two-fluid nozzles 27A and 27B.

In the two-fluid nozzles 27A and 27B, the compressed air ejected from the compressor 10 by ultrasonic waves is mixed with the disinfectant, and the droplets atomized by the shearing action are included in the middle while the other one is included. While colliding with the same compressed air flow at the required angle and repeating the mutual shearing action,
Ultrasonic waves of 20,000 to 35,000 hertz are generated to further atomize the droplets and homogenize them. Therefore, the disinfectant is sprayed from the two-fluid nozzles 27A and 27B as a mist having a particle diameter of 10 μm or less.

As described above, the particle size of the disinfectant is set to
For example, since the spray is 10 μm or less, the disinfectant stays in the air for a long time. Moreover, the visibility is 4
The airborne bacteria can be effectively sterilized by filling the interior of the room and spraying it until a supersaturated state of m or less is reached.

Since the fan 17 is driven at the initial stage of spraying the disinfectant, the air blown from the fan 17 is supplied to the rotating body 3 and the two-fluid nozzles 27A, 27A,
The wind blows from the opening 5a of the cover 5 that projects 7B. As a result, the ultrafine particulate disinfectant sprayed from the two-fluid nozzles 27A and 27B has a long flight distance and is diffused and uniformly sprayed to every corner of the room. Therefore, the front and back surfaces of the ceiling and wall surface equipment will be surely wetted by the disinfectant, and the disinfectant will be applied evenly, and the adhered bacteria adhering to the wall surface and the front and back surfaces of the equipment will be sterilized. Can be done.

The above-mentioned injection of the ultrafine particle disinfectant is carried out until the supersaturated state where the visual field is 4 m or less is reached as described above. This injection amount is determined by the volume of the room, and a corresponding amount of the disinfectant is stored in the disinfectant tank 24 in advance as described above. For example, in the case of a room of 35 m ² , it is about 1.
It requires 4 liters of disinfectant, it takes about 21 minutes to spray all the disinfectant, and the fan 17 is only driven for the first 10 minutes. In this way, since the ultrafine particle disinfectant is sprayed more than the saturated state, the sprayed disinfectant falls on the upper surface of the floor etc. due to its own weight, and the disinfectant is applied to the floor. Become. This allows
Bacteria adhering to the floor can be sterilized and disinfected.

After spraying the disinfectant, the tank holder 30
It is detected that the float of the float switch 31 in the inside of the electric equipment has descended and the disinfectant has been exhausted, and a signal is sent to the control panel provided inside the electric box 11, and from this control panel
A signal is transmitted to the one-way solenoid valve 26. Upon receiving this signal, the three-way solenoid valve 26 switches the flow path, and the sterile water tank 2
5 and the two-fluid nozzle 27B are communicated with each other, and sterilized water is sprayed from the two-fluid nozzles 27A and 27B to generate the two-fluid nozzle 27.
Clean the liquid contact part. The injection of this sterilized water is time-controlled by the control panel, and the injection time is about 1 minute.

Then, only the compressed air from the compressor 10 is blank-jetted from the two-fluid nozzles 27A and 27B,
Water inside the two-fluid nozzles 27A and 27B is removed and dried. This blank injection time is about 1 minute. As described above, after the disinfectant is sprayed, the inside of the nozzle is automatically washed with sterile water and dried by the blank jet, so that the clogging of the two-fluid nozzles 27A and 27B can be prevented.

The compressed air is supplied to the two-fluid nozzle 27.
After drying A and 27B, the fan 17 is driven again to suck in the disinfectant still remaining in the air, and the disinfectant is collected by the filter 18. This recovery work is performed until the operator stops the switch. In this way, by driving the fan 17 again and collecting the disinfectant in the air, it is possible to prevent the floor surface, equipment, and the like from being excessively wetted with the disinfectant, and the wetting of the floor surface and the like is minimized. By doing so, the drying time in the room can be shortened and the working time can be shortened. Along with this, the probability of emergence of resistant bacteria can be reduced.

[0043]

[Experimental example] In order to demonstrate the sterilization effect of the automatic sterilization apparatus for hospitals according to the present invention, the following experiment was conducted. In the experiment, as shown in FIG. 6, a room with a volume of 32.5 m ³ is used. In the figure, A to D are floors around the bed, E is an interior light extinguishing switch, and F is an entrance doorknob. , G is a toilet door knob, H is a television switch, I is a lower locker, J is a locker upper portion, K is a TV stand, L is a table, M is a sink, and N is a telephone handset.

Table 1 below shows the results of spraying 1.3 liters of 0.1% benzalkonium chloride into this room by the above-mentioned automatic control method using the disinfecting apparatus of the above-mentioned embodiment.

[0045]

[Table 1]

In Table 1, ● indicates MRSA, ○ indicates S. epidermidis, Δ indicates glucose non-fermenting Gram-negative bacillus, × indicates Bacillus subtilis,
◆ indicates Micrococcus, and a total of 5 types of bacteria were attached to each part of the room before the experiment.

On the floors A to D, a total of 4 kinds of bacteria were collected before the experiment.
A total of 56 bacteria (0, 5, 16, 5) were attached, whereas 55 bacteria could be removed. Bacteria did not adhere to the turn-off switch E, the upper part J of the rocker and the table L before the experiment and after the experiment.
That is, the area contaminated with bacteria has not expanded. Door knob F at the entrance is 4, toilet door knob G is 1, TV switch H
38, the lower part I of the locker is 25, the TV stand K is 5, the sink M is 37, and the telephone handset N is 56. Before the experiment, the bacteria had adhered, but after the experiment, all should be 0. I was able to.

The apparatus of the present invention is not limited to the above-mentioned embodiment, and for example, the utility model application of the present applicant's prior application, Japanese Utility Model Application Laid-Open No. 5-176.
No. 977, the rotating body having the two-fluid nozzle attached is configured to be movable in the vertical direction, and the two-fluid nozzle is rotated in the vertical direction and is rotated in the horizontal direction.
It is also preferable to be able to spray from the two-fluid nozzle in all directions of the vertical and horizontal directions.

[0049]

As is apparent from the above description, in the hospital automatic sterilizing / disinfecting apparatus according to claim 1 of the present invention, the disinfectant in the disinfectant tank is supplied by the automatic supply means having the three-way solenoid valve. The disinfectant can be sprayed as ultrafine particles having a particle size of 10 μm or less by supplying the disinfectant to the two-fluid nozzle, mixing the compressed air from the compressor with the disinfectant by the two-fluid nozzle. Therefore, by spraying the sprayed disinfectant in the air for a long period of time, and filling the room until it is in a supersaturated state where the visibility is 4 m or less, it is possible to effectively sterilize the floating bacteria.

When the disinfectant is sprayed, the two-fluid nozzle is rotated in the horizontal direction and further in the vertical direction as necessary by the rotating means, so that the disinfectant is uniformly distributed in each direction in the room. Can be injected into. Furthermore, by spraying the disinfectant until the inside of the room is saturated, the atomized disinfectant is dropped by its own weight to wet the floor surface and sterilize the adherent bacteria adhering to the floor surface. Therefore, floating bacteria and adherent bacteria can be efficiently sterilized.

Further, in the above apparatus, when the injection by the two-fluid nozzle is completed, the fan is driven again to collect the disinfectant in the air and prevent the floor surface from getting excessively wet with the disinfectant. Wetting of the surface can be minimized. Thereby, the drying time in the room can be shortened and the working time can be shortened.

In the hospital automatic sterilizing / disinfecting apparatus according to the present invention, the control means controls the spraying time from the two-fluid nozzle,
Since the injection direction and the drive time of the fan are controlled, it is possible to automatically perform sterilization in an optimum manner.
Further, by driving the fan even when the disinfectant is sprayed, the flight distance of the ultrafine particle disinfectant can be increased, and the disinfectant can be diffused and sprayed more uniformly in the room.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing an automatic sterilization apparatus in a hospital according to the present invention.

FIG. 2 is a side view showing a state where the cover of FIG. 1 is removed.

FIG. 3 is a front view showing a state where the cover of FIG. 1 is removed.

FIG. 4 is a perspective view showing a rotating body.

5A is an enlarged cross-sectional view of a two-fluid nozzle, FIG. 5B
FIG. 3 is a side view of a nozzle adapter of the two-fluid nozzle.

FIG. 6 is a schematic view showing a room in which an experiment was conducted with the device of the present invention.

FIG. 7 is a side view showing a conventional automatic sterilization device in a hospital.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Portable trolley 2 Cover 3 Rotating body 10 Compressor 11 Electric box of electric parts 15 Rotating motor 16 Fan driving motor 17 Fan 18 Filter 20 Small diameter gear 21 Large diameter gear 24 Disinfectant tank 25 Sterilizing water tank 26 3-way electromagnetic Valve 27 Two-fluid nozzle 34, 35, 36 Liquid tube 45 Air hose

Claims (2)

[Claims] 1. A two-fluid nozzle that mixes a disinfectant with compressed air and ejects it as ultrafine particles, a disinfectant tank containing a disinfectant to be supplied to the two-fluid nozzle, and compressed air to the two-fluid nozzle. Compressor, supply means for supplying the disinfectant and compressed air to the two-fluid nozzle, rotating means for changing the ejection direction of the two-fluid nozzle, and ultrafine particles driven at least after the end of the ejection by the two-fluid nozzle. An in-hospital automatic sterilization device, characterized in that a fan and a filter for collecting the disinfectant are mounted on a portable carriage. 2. A control means for controlling the spraying time from the two-fluid nozzle, the injection direction and the driving time of the fan is provided, and when the control means is injecting ultra-fine particles from the two-fluid nozzle and the end of injection. 2. The automatic sterilization apparatus for hospitals according to claim 1, wherein the fan is controlled so as to be driven by selecting only when or after the end of injection.