JP6828924B1 - Exhaust dust exhaust device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhaust dust exhaust device which is a small and inexpensive device which can be introduced into a dental clinic or the like and can effectively remove fine particles to which tooth cutting powder, pathogens and bacteria are attached. SOLUTION: In an exhaust dust exhaust device 1 provided with a vacuum device 20 and sucking dust together with air in a contaminated room, a floor surface suction port 4 communicating with the vacuum device 20 is provided on a floor surface F1 in a target room R1. .. Further, the floor surface suction port 4 is provided with an underfloor hood 40 provided under the floor surface F1. [Selection diagram] Fig. 1

Description

The present invention relates to an exhaust dust device capable of effectively removing dust and the like floating in the air, and more particularly to an exhaust dust device using a dental extraoral vacuum device used in a dental clinic or the like. is there.

Conventionally, in dental clinics, caries-affected tooth substance is removed by using a rotary cutting tool driven by an air turbine. However, it is known that cutting the carious portion of the tooth causes the tooth cutting powder and fine particles to which pathogens and bacteria are attached to be scattered, which is a major cause of air pollution in the medical care environment. Fine particles to which scattered tooth cutting powder, pathogens, bacteria, etc. are attached become fine particles smaller than micron units, float in the air, and then fall to the floor surface over a relatively long time.

Therefore, it is known that these contaminated fine particles are present at a high density in the air layer about 30 cm from the floor surface. It is also known that these fine particles are agitated by a person walking or the like and soar again, causing further secondary contamination. Further, it is known that fine particles convected by the same mechanism are convected, although the types of scattered particles are different not only in dental practice but also in other medical sites.

For example, in Patent Document 1, in a pollution prevention device in which a suction hood is detachably attached to an adapter that can swing up and down, left and right, and back and forth in communication with a suction device, the shape of the suction hood is circular at the tip. , The base is square, and the support is detachably fixed to the inner surface of the tip of the adapter, and the filter member impregnated with the sterilizing agent and the suction hood are mounted on the support, and the adapter and the suction device are connected. A pollution prevention device is disclosed in which a sterilization band that can be attached and detached by two connecting means is provided at at least one position of the pipe, the sterilization band is impregnated with a sterilizer, and a filter member having a small ventilation resistance is inserted. (1) of the scope of claims of Patent Document 1, paragraphs [0024] to [0034] of the specification, FIG. 1 of the drawing, etc.).

Further, Patent Document 2 has an intake port 11 movably arranged in the vicinity of the oral cavity of a patient, the intake port 11 and an exhaust pipe 12 continuous with the intake port, and the intake port 11 is used by the patient. A sensor 21 is provided at the intake port 11 that is moved to the vicinity of the oral cavity and sucks and discharges suspended matter scattered near the oral cavity of the patient, and when the intake port 11 comes near the oral cavity of the patient, the sensor 21 is used. A dental extraoral vacuum device that operates a vacuum device to suck and eliminate contaminated air near the oral cavity of a patient is disclosed (claim 1, claim 1, paragraph [0012] of the scope of the patent claim of Patent Document 2]. -[0015], see FIG. 1 in the drawing).

However, the contamination prevention device described in Patent Document 1 and the dental extraoral vacuum device described in Patent Document 2 only consider suction directly from the vicinity of the patient's oral cavity with the vacuum device, and float in the air. It did not take into consideration the scattered tooth cutting powder and fine particles to which bacteria adhered, which fell on the floor surface over a relatively long time, and could not solve the above-mentioned problem.

On the other hand, in Patent Document 3, an air outlet 21 communicated with the air conditioning unit 2 is provided on the ceiling portion 12 of the air conditioning target space, and the flat return air duct 25 communicated with the air conditioning unit 2 is subject to air conditioning. Along the side wall surface of the space, it is provided so as to extend from the ceiling portion 12 to the floor portion 13 of the air-conditioned space, and a suction port 22 is formed at the lower part of the return air duct 25 in a state of the entire width in the width direction or substantially the entire width thereof. The air-conditioning equipment provided is disclosed (see claims 1, claims 1, paragraphs [0008] to [0012] of the specification, FIGS. 1, 2 and the like in the drawings).

Further, Patent Document 4 describes an air conditioner unit 2 that supplies air downward from the ceiling surface into the ceiling of a hospital room, and a relay unit (T1) that sucks ambient air under the patient's bed and exhausts it laterally. Etc.) and a duct panel 3 having a suction port 3a at the bottom along the wall of the hospital room, and the air conditioner unit 2 has a HEPA filter 22 on the air supply side of the air conditioner 20 and an outside air and a duct panel on the suction side. A return air chamber 21 that communicates with 3 is provided, and the air conditioner unit 2 and the relay unit are made to cooperate with each other to allow sterile and purified air that has passed through a HEPA filter to flow from the ceiling surface to the bed as a descending layer flow. A vertical laminar flow type sterile hospital room that supplies air and sucks air around the bed from a suction port and returns the air to the return air chamber is disclosed (claim 1, the specification of the scope of the patent claim of Patent Document 4). In paragraphs [0027] to [0037] of the drawings, FIGS.

However, the air-conditioning equipment described in Patent Document 3 and the sterile room described in Patent Document 4 are inventions relating to a highly sterilized hospital room having a cleanliness ISO Class 5 as described in Patent Document 4. It was not intended to solve the above-mentioned problems required for dental extraoral vacuum used in dental clinics and the like. Further, the air-conditioning equipment described in Patent Document 3 and the sterile hospital room described in Patent Document 4 are extremely expensive and large-scale devices even if the above-mentioned problems can be solved, and they cannot be introduced as they are in a dental clinic or the like. There wasn't.

Japanese Unexamined Patent Publication No. 7-88119 Japanese Unexamined Patent Publication No. 8-141005 Japanese Unexamined Patent Publication No. 5-33996 Japanese Unexamined Patent Publication No. 2013-253761

Therefore, the present invention has been devised in view of the above-mentioned problems, and an object of the present invention is a small and inexpensive device that can be introduced into a dental clinic or the like, as well as tooth cutting powder, pathogens and bacteria. It is an object of the present invention to provide an exhaust dust discharging device capable of effectively removing fine particles to which

The exhaust dust exhaust device according to claim 1 is an exhaust dust exhaust device provided with a vacuum device and sucks dust together with contaminated indoor air, and a floor suction port communicating with the vacuum device is a floor in the target room. One or a plurality of floor suction ports are provided in the center of the surface, the floor suction port has an underfloor hood provided under the floor, and the underfloor hood flanges the floor in the target room. The vacuum device also serves as a vacuum device for extraoral vacuum that sucks scattered substances scattered during dental treatment, and immediately stops suction from the floor suction port when the extraoral vacuum is activated. It is characterized in that it is controlled to do so .

The exhaust dust exhaust device according to claim 2 is the exhaust dust exhaust device according to claim 1, wherein a shutter mechanism capable of blocking an exhaust path is provided between the vacuum device and the floor suction port. the shut ter mechanism includes a housing, a side opening is provided on the side surface of the housing, the shut ter mechanism is configured to be cut off the exhaust path by closing the side opening It is characterized by that.

The exhaust dust exhaust device according to claim 3 is the exhaust dust exhaust device according to claim 1 or 2 , wherein the floor suction port prevents a foreign matter suction prevention net for preventing the suction of foreign matter and a foreign matter suction. It is characterized by having either one or both of the perforated lids.

The exhaust dust exhaust device according to claim 4 is the exhaust dust exhaust device according to any one of claims 1 to 3 , and immediately after the extraoral vacuum is stopped, the suction operation from the floor surface suction port is performed. It is characterized in that the preparation is started, and after a certain preparation time elapses, the suction from the floor surface suction port is controlled to be performed for a certain period of time .

According to the inventions of claims 1 to 3 , since the floor surface suction port is provided, cutting dust of scattered teeth that floats in the air and then falls on the floor surface over a relatively long time Fine particles can be effectively removed. Therefore, it is possible to effectively prevent the growth of bacteria and bacteria in the fine particles and prevent secondary contamination. In addition, it is not necessary to operate the vacuum device at all times, such as by operating the vacuum device before opening to remove dust and the like that has fallen on the floor the day before, making it a small and inexpensive device that can be introduced into dental clinics, etc. be able to.
Further, according to the inventions of claims 1 to 4, since the floor suction port has an underfloor hood, the dust sucked halfway is stored in the underfloor hood without constantly operating the vacuum device. be able to. Therefore, it is possible to prevent the dust sucked halfway from being agitated by a person walking or the like and flying up again to cause further secondary pollution without constantly operating the vacuum device.
Further, according to the inventions of claims 1 to 3, a vacuum device for extraoral vacuum, which is usually provided in a dental clinic or the like, floats in the air and takes a relatively long time to reach the floor surface. It is possible to effectively remove the cutting powder of falling scattered teeth and fine particles to which bacteria are attached. Therefore, it is not necessary to separately provide a suction device such as a new vacuum device.
In addition, according to the inventions of claims 1 to 3, after performing tooth cutting and metal cutting using an extraoral vacuum device, an exhaust dust exhaust device according to the present invention is used by using a timer device, a relay device, and the like. Can be electrically linked to an extraoral vacuum device. Therefore, according to the inventions of claims 1 to 3, it is possible to effectively remove the generation of dust and the like that have fallen on the floor surface by suctioning the floor surface, and the above-mentioned problem of secondary pollution can be effectively removed each time. Can be effectively eliminated to prevent the growth of bacteria and bacteria in the fine particles.

In particular, according to the invention of claim 2 , since the shutter mechanism capable of blocking the exhaust path is provided, the exhaust path can be immediately blocked by the shutter mechanism even when an object is dropped on the floor. Further, the suction force of the vacuum device can be switched to another device such as an extraoral vacuum, and the operating efficiency of the exhaust dust exhaust device can be increased, the running cost and the like can be reduced, and the cost efficiency can be improved.

In particular, according to the third aspect of the present invention, it is possible to prevent foreign matter such as a denture that has fallen by the foreign matter suction prevention net or the perforated lid from being sucked into the underfloor suction port.

FIG. 1 is a perspective view showing a room in which the exhaust dust exhaust device according to the first embodiment of the present invention is installed. FIG. 2 is a perspective view showing the configuration of the floor suction port of the exhaust dust exhaust device of the above. FIG. 3 is a diagram showing an air flow at the floor suction port of the exhaust dust exhaust device of the same as above. FIG. 4 is a perspective view showing a room in which the exhaust dust exhaust device according to the second embodiment of the present invention is installed. FIG. 5 is a front perspective view showing a treatment room of a dental clinic in which an exhaust dust exhaust device according to a third embodiment of the present invention is installed. FIG. 6 is a bottom perspective view mainly showing the underfloor piping of the exhaust dust exhaust device of the above. FIG. 7 is a diagram showing the interlocking of the extraoral vacuum unit and the floor suction.

Hereinafter, an embodiment for carrying out the exhaust dust exhaust device according to the present invention will be described in detail with reference to the drawings.

[First Embodiment]
First, the exhaust dust exhaust device 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a room in which the exhaust dust exhaust device according to the first embodiment of the present invention is installed. Further, FIG. 2 is a perspective view showing a configuration of a floor suction port of the exhaust dust exhaust device 1.

First, with reference to FIG. 1, a room to which the exhaust dust exhaust device 1 according to the first embodiment of the present invention is installed will be briefly described. In FIG. 1, the ceiling and some walls are partially omitted so that the configuration of what is illustrated is easy to understand. As shown in FIG. 1, the room R1 to be exhausted and discharged is a room (room) having a rectangular shape in a plan view in which walls W1 are installed on all four sides (only three sides in the figure), and OA is placed on the concrete slab S1. A floor such as a floor is installed to form a floor surface F1.

Further, as shown in FIG. 1, the exhaust dust exhaust device 1 according to the first embodiment of the present invention is provided with an exhaust unit 2 installed outside the room R1 and an earth leakage breaker and a control unit of these devices. It is equipped with a distribution board 3 and the like. The exhaust unit 2 is provided with a vacuum device 20 (not shown) and has a function of sucking dust together with the contaminated indoor air of the room R1. Further, the vacuum device 20 of the exhaust unit 2 is connected to and communicates with the floor surface suction port 4 provided on the floor surface F1 in the room R1 which is the target room by a pipe 5.

<Exhaust unit>
(Vacuum device)
The vacuum device 20 is a mechanical ventilation facility having an exhaust fan (not shown) and having a ventilation capacity of 0.3 times / h or more conforming to the Building Standards Act, and is dust with air from the floor suction port 4 in the room R1. Is sucked in and exhausted to the outside air. The vacuum unit 20 includes, per suction mouth, at least 2m ³ / min or more, it preferably has a 3m ³ / min or more suction force capability Nozomashiii.

Further, the wall W1 is provided with an air supply port (not shown) so that the outside air can be supplied into the room R1 by natural air supply. Of course, it goes without saying that the air conditioner may be used as mechanical air supply in which the outside air and the return air returned from the exhaust of the room R1 are mixed and supplied.

(HEPA filter)
Further, when the outside air and the return air returning from the exhaust of the room R1 are mixed and supplied, it is preferable to provide a HEPA filter (High Efficiency Particulate Air Filter) or a ULPA filter (Ultra Low Penetration Air Filter). This is because fine particles to which pathogens and bacteria are attached can be collected and returned, and the air supplied to the room R1 can be sterilized and purified.

Here, the HEPA filter is an air filter having a particle collection rate of 99.97% or more and an initial pressure loss of 245 Pa or less with respect to particles having a rated air volume and a particle size of 0.3 μm. Pointing to. Further, the ULPA filter refers to an air filter having a collection efficiency of 99.9995 or more and an initial pressure loss of 245 Pa or less for particles having a rated air volume of 0.15 μm.

<Floor suction port>
Next, the floor suction port 4 will be described in detail with reference to FIG. As shown in FIG. 2, the floor suction port 4 includes an underfloor hood 40 that opens to the floor surface F1 and is provided under the floor, a shutter mechanism 41 that can block an exhaust path that communicates with the underfloor hood 40, and these. It is composed of a connecting pipe 42 and the like.

As shown in FIG. 2, the underfloor hood 40 is a flat hood with a rectangular flange in a plan view having a rectifying function that suppresses eddy and enables efficient suction, and is an underfloor hood embedded under the floor surface F1. It has become. Therefore, it is possible to the floor surface by a flange effect becomes the flange of the floor hood 40, pollution particles are evacuated by suction efficiently air layer of about 30cm from the floor surface F1 to exist at a high density.

Further, the underfloor hood 40 is provided with a covering plate 43 that makes it possible to walk on the underfloor hood 40 and covers the floor surface suction port 4 that prevents falling objects that have fallen on the floor from entering the underfloor hood 40. ing. The cover plate 43 is characterized in that a rectangular hole 43a through which air can pass is arranged around an elongated rectangular shape along each side, and a central portion thereof is closed. Further, the installation height of the cover plate 43 is the same as or lower than that of the floor surface F1. A strong negative pressure space appears due to the chamber effect in the space where the closed central part of the cover plate 43 and the underfloor hood 40 are combined, creating a strong suction force, and as shown in FIG. 3, the air flow is efficient. Can be created in. This, combined with the flange effect described above, makes it possible to efficiently remove solid cutting pieces and contaminated particles that fall on the floor surface.

(Shutter mechanism)
In the shutter mechanism 41, a circular side opening 41a for inserting the pipe 5 is formed on the side surface of a cylindrical housing 410 with a metal bottom lid, and a connecting pipe 42 is connected to the lid 411. An upper surface opening (not shown) for insertion is formed.

This shutter mechanism 41 is a shutter mechanism that can open and close the shutter (not shown) electrically, and closes the side opening 41a or the top opening by a signal of a controller connected by wire or wirelessly, and immediately shuts off the exhaust path. It is a structure that can be done. Therefore, even if an object is accidentally dropped on the floor surface F1, the shutter mechanism 41 can immediately shut off the exhaust path and prevent the dropped object from being sucked.

Further, as shown in FIG. 2, a metal foreign matter suction prevention net 44 is inserted in the upper part (near the upper end) of the connecting pipe 42, and the foreign matter suction prevention net 44 also sucks the falling object. Can be prevented. The distance between the meshes of the foreign matter suction prevention net 44 is smaller than the diameter of the hole 43a of the covering plate 43, and a small falling object that has passed through the hole 43a and has fallen into the underfloor hood 40 is sucked up to the pipe 5. It can be prevented from being done.

As described above, conventionally, it has been known that contaminated particles are present in a high density in the air layer about 30 cm from the floor surface. However, no suction port was provided on the floor surface. It is presumed that the reason is that in a living room where a person stays for a long time, a person may walk on the floor or drop an object, and it is inconvenient if there is a suction port on the floor surface. Further, it is presumed that the same effect could be obtained if the suction port was provided at the lower part of the wall surface.

As will be described later, in dental clinics, there is a problem of scattered tooth cutting powder in which a large number of bacteria may be present.The tooth cutting powder has a heavy specific gravity and is fine particles, so it scatters, but once. When dropped, there is a problem that dust cannot be effectively discharged when sucking in the lateral direction. In addition, the exhaust gas caused the fine particles to fly up again, and there was a risk of secondary contamination.

<Piping>
The pipe 5 is a general PVC pipe mainly installed in the pipe space between the concrete slab S1 and the floor surface F1, and VU pipes and VP pipes having an inner diameter of about φ50 mm or φ65 mm are available at low cost. Therefore, it is preferably used. Of course, the pipe 5 is not limited to the PVC pipe, and it goes without saying that the pipe 5 may be a breathable cast iron pipe or other pipe material. Further, the diameter of the pipe 5 and the like may be appropriately set according to the volume of the room R1 in which the exhaust dust exhaust device 1 is installed and the ventilation volume according to the application.

According to the exhaust dust exhaust device 1 according to the first embodiment described above, since the floor surface suction port is provided, the fine particles that float in the air and then fall onto the floor surface F1 over a relatively long time. Can be effectively removed.

Further, according to the exhaust dust exhaust device 1, since the underfloor hood 40 is provided, the dust sucked halfway can be stored in the underfloor hood 40 without constantly operating the vacuum device 20. Therefore, it is possible to prevent the dust sucked halfway from being agitated by a person walking or the like and flying up again, causing further secondary pollution, without constantly operating the vacuum device 20.

It is said that about one-third of the environmental air that can be replaced by a general air purifier remains and cannot be replaced efficiently. However, according to the exhaust dust exhaust device 1, the environmental air in the room can be efficiently replaced due to the influence of gravity and the normal flow from top to bottom that blows down from the upper suction port to the floor suction port 4. For example, an indoor space with a capacity of 10 tsubo (about 82.5 m ³ ) can be replaced in about 40 minutes.

Further, according to the exhaust dust exhaust device 1, a shutter mechanism 41 capable of blocking the exhaust path is provided, so that even if an object such as a denture is dropped on the floor, the shutter mechanism 41 immediately shuts off the exhaust path. Can be done. Further, the suction force of the vacuum device 20 can be switched to another device, and the operating efficiency of the exhaust dust device 1 can be increased, the running cost and the like can be reduced, and the cost efficiency can be improved.

[Second Embodiment]
Next, the exhaust dust exhaust device 1'according to the second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a perspective view showing a room in which the exhaust dust exhaust device according to the second embodiment of the present invention is installed. The exhaust dust exhaust device 1'according to the second embodiment differs from the exhaust dust exhaust device 1 described above only in that the wall surface suction port 6 is further provided in addition to the configuration of the exhaust dust exhaust device 1. , That point will be described, the same configurations will be designated by the same reference numerals, and the description thereof will be omitted.

The wall surface suction port 6 is a suction port provided in a portion of the target room R1 in contact with the floor surface F1 which is the lowermost part of the wall W1 and has a rectangular wall surface hood. The wall surface suction port 6 has a function of efficiently sucking and discharging dust and the like in an air layer of about 30 cm from the floor surface F1 where contaminated particles are present at a high density.

Further, the wall surface suction port 6 is connected to the exhaust unit 2 described above by a pipe 5'similar to the pipe 5 described above, and the vacuum device 20 of the exhaust unit 2 is used to surround the floor surface F1 and the wall W1 near the entrance corner. It is configured so that air can be sucked together with dust.

According to the exhaust dust exhaust device 1'according to the second embodiment described above, since the wall surface suction port 6 is provided in addition to the floor surface suction port 4 described above, only the fine particles that have fallen near the center of the floor surface are used. It is also possible to effectively remove the dust accumulated in the corner of the wall W1 in contact with the floor surface F1. Therefore, according to the exhaust dust exhaust device 1', it is possible to efficiently remove the contaminated fine particles more efficiently than the exhaust dust exhaust device 1.

[Third Embodiment]
Next, the exhaust dust exhaust device 1 according to the third embodiment of the present invention will be described with reference to FIGS. 5 and 6. FIG. 5 shows the exhaust dust exhaust device according to the third embodiment of the present invention installed. It is a front perspective view which shows the treatment room of a dental clinic, and FIG. 6 is a bottom perspective view which mainly shows the underfloor piping of an exhaust dust exhaust device 1 ". The same configurations as the above-mentioned exhaust dust exhaust device 1 and exhaust dust exhaust device 1'are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 5 and 6, the exhaust dust exhaust device 1 ″ according to the third embodiment is an embodiment in which the present invention is applied to the treatment room R1 ′ of the dental clinic. Reclining sheet 7 for patients and extraoral vacuum unit 8 which is an extraoral vacuum that sucks and exhausts scattered invisible fine dust (scattered substances) such as tooth shavings, metal pieces, blood, and bacteria. And so on.

In the exhaust dust exhaust device 1 "according to the third embodiment, a plurality of the above-mentioned floor surface suction ports 4 are provided on the sides of the reclining seat 7 and the extraoral vacuum unit 8 according to the number thereof.

Then, in the exhaust dust exhaust device 1 "according to the third embodiment, each floor surface suction port 4 is connected by the same pipe 5" as the above-mentioned pipes 5 and 5', and the exhaust unit is provided with the vacuum device 20. It is connected to 2. That is, the vacuum device 20 of the exhaust unit 2 also serves as the vacuum device of the extraoral vacuum unit 8 which is an extraoral vacuum and the vacuum device of the exhaust dust exhaust device 1 ”.

Therefore, according to the exhaust dust exhaust device 1 "according to the third embodiment, the vacuum device of the extraoral vacuum unit 8 usually provided in a dental clinic or the like allows a relatively long time after floating in the air. It is possible to effectively remove the scattered tooth cutting dust and fine particles to which bacteria and pathogens are attached, which fall on the floor surface. Therefore, not only is it unnecessary to separately install a suction device such as a new vacuum device. , The fear of secondary infections can be significantly reduced.

In the exhaust dust exhaust device 1 "according to the third embodiment, it is preferable to provide a HEPA filter or a ULPA filter in the exhaust unit 2 as in the exhaust dust exhaust device 1. In a treatment room such as a dental clinic. This is because if the fine particles to which pathogens and bacteria are attached return together with the air, there is a risk of secondary infection.

Next, an embodiment of interlocking between the extraoral vacuum unit 8 and the vacuum device of the exhaust dust exhaust device 1 ”will be described with reference to FIG. 7. FIG. 7 is an interlocking of the extraoral vacuum unit 8 and the floor suction. In the figure, a plurality of extraoral vacuum units 8 are referred to as extraoral vacuum units 1, 2, and 3, and the vacuum device of the exhaust dust exhaust device 1 ”is referred to as floor suction 1, 2, 3. doing.

As shown in FIG. 7, since each extraoral vacuum unit is operated according to the dental treatment, the operating time is arbitrary. In addition, the floor suction is set to start preparations for operation immediately after the operation of the extraoral vacuum unit is stopped and to operate for a certain period of time. For example, in the illustrated embodiment, the floor suction preparation time is set to 10 seconds, and the operating time is set to 30 seconds.

Therefore, normally, if one of the extraoral vacuum units is operated and then stopped during (1) to (3), the floor suction prepares for operation for 10 seconds in (3) to (4). Then, it operates for 30 seconds between (5) and (7) and stops.

However, as shown in FIGS. 7 (8) to (13), after one of the other extraoral vacuum units is activated, the floor suction prepares for operation for 10 seconds, and then a predetermined time (30 seconds). If another extraoral vacuum unit is activated during the operation before the lapse, the floor suction is immediately stopped (see (14) in FIG. 7).

Similarly, as shown in FIG. 7 (18), after one of the extraoral vacuum units has stopped operating, one of the other extraoral vacuum units is in a state where the floor suction is ready for operation. Even if the platform is operated, the floor suction will stop operating immediately.

Then, as shown in FIGS. 7 (18) to (22), when a plurality of extraoral vacuum units are stopped for a certain period (preparation 10 seconds + operation 30 seconds), as a general rule, the oral cavity Immediately after the operation of the outer vacuum unit is stopped, the operation preparation is started for 10 seconds and the operation is started for 30 seconds. Of course, the number of seconds is an example as described above, and it goes without saying that the number of seconds may be appropriately set according to the scale of the exhaust dust exhaust device 1 ", the number of extraoral vacuum units 8, and the like.

As described above, according to the exhaust dust exhaust device 1 "according to the third embodiment, the vacuum of the extraoral vacuum unit is performed by the interlocking operation of the extraoral vacuum unit 8 and the vacuum device of the exhaust dust exhaust device 1". By using the gap time during operation of the device, it is possible to efficiently remove tooth cutting dust and fine particles to which bacteria and pathogens are attached. Therefore, not only is it unnecessary to separately provide a suction device such as a new vacuum device, but also the risk of secondary infection can be significantly reduced.

Although the exhaust dust exhaust devices 1 to 1 according to the embodiment of the present invention have been described in detail above, all of the above-mentioned or illustrated embodiments have shown one embodiment embodied in carrying out the present invention. Therefore, the technical scope of the present invention should not be construed in a limited manner by the above-described embodiments.

1,1', 1 ": Exhaust dust exhaust device 2: Exhaust unit 20: Vacuum device 3: Distribution board 4: Floor suction port 40: Underfloor hood 41: Shutter mechanism 41a: Side opening 410: Housing 411: Lid Part 42: Connecting pipe 43: Cover plate 43a: Rectangular hole 44: Foreign matter suction prevention net 5, 5', 5 ": Piping 6: Wall suction port 7: Reclining sheet 8: Extraoral vacuum R1: Room R1': Treatment room F1: Floor surface W1: Wall S1: Concrete slab

Claims (4)

An exhaust dust device equipped with a vacuum device that sucks dust together with polluted indoor air.
One floor suction port communicating with the vacuum device is provided in the center of the floor surface in the target room, or a plurality of floor suction ports are provided at intervals.
The floor suction port has an underfloor hood provided under the floor.
The underfloor hood has a flange on the floor surface of the target room .
The vacuum device also serves as a vacuum device for extraoral vacuum that sucks scattered substances scattered during dental treatment, and is controlled so as to immediately stop suction from the floor suction port when the extraoral vacuum is activated. Exhaust dust exhaust device characterized by being done. A shutter mechanism capable of blocking the exhaust path is provided between the vacuum device and the floor suction port.
Said shut ter mechanism includes a housing, a side opening is provided on the side surface of the housing, the shut ter mechanism, it has a configuration capable of blocking the exhaust path by closing the side opening The exhaust dust exhaust device according to claim 1. The exhaust exhaust according to claim 1 or 2, wherein the floor suction port has one or both of a foreign matter suction prevention net for preventing foreign matter from being sucked in and a perforated lid for preventing foreign matter from being sucked in. Dust device. Immediately after the extraoral vacuum is stopped, preparation for operation of suction from the floor suction port is started, and after a certain preparation time elapses, suction from the floor suction port is controlled to be performed for a certain period of time.
The exhaust dust exhaust device according to any one of claims 1 to 3.