JPWO2016013256A1 - Cleaning fine mist generating device, oral cleaning device, nozzle, cleaning method for oral cavity, and cleaning fine mist generating method for cleaning fine mist generating device - Google Patents

Abstract

A fine mist generating device for cleaning, an oral cleaning device, a nozzle, and an oral cleaning method capable of cleaning by spraying high-speed fine mist, which is fine droplets, onto a spray target such as the oral cavity with a small amount of water And a method for producing a fine mist for cleaning. A cleaning fine mist generating apparatus that injects fine mist, and includes a nozzle 10 and a liquid supply unit that supplies high-pressure liquid to the nozzle 10. The nozzle 10 includes a cylindrical liquid channel 12 connected to a liquid supply unit, and a high-pressure liquid that communicates with the liquid channel 12 and that is supplied via the liquid channel 12. And an injection port 11 that injects at high speed.

Description

  The present invention relates to a cleaning fine mist generating device, an oral cleaning device, a nozzle, an oral cleaning method, and a cleaning fine mist generating method of a cleaning fine mist generating device.

For example, in inpatients, care recipients, elderly people, etc. who have weakened immunity, can not provide adequate oral care, infections such as aspiration pneumonia due to oral bacterial infection and oral bacterial aspiration There is a risk of causing.
There have been reports that if oral care is sufficiently performed, the length of hospital stay can be significantly reduced, and the infection rate of infectious diseases can be reduced.

  Thus, it is important to clean the oral cavity such as teeth. In particular, a technique capable of easily and sufficiently cleaning the oral cavity by a third party is important.

  However, the work of cleaning teeth, such as inpatients, cleaning the oral cavity, etc., by opening the mouth and cleaning the teeth one by one takes time, requires technology, and is troublesome.

  By the way, as a method of brushing teeth, brushing with a general brush, brushing with an ultrasonic toothbrush, removing tartar, etc. with an ultrasonic scaler, washing between teeth and periodontal pockets with jet water flow, etc. are known ing.

  For example, Patent Document 1 discloses an oral cleaning device that cleans the oral cavity with a jet water stream.

Japanese Unexamined Patent Publication No. 08-033656 JP 2013-240583 A

  However, for example, when the interdental region is washed with a jet water flow by an oral cleaning device that cleans the inside of the oral cavity with a jet water flow, the jet water flow may hit the tooth and the patient may be painful. This is because the jet water flow, that is, the momentum of the liquid column is large, and gives a large striking force to the toothpaste at a time.

  For this reason, this inventor considered not the jet water flow but the apparatus which sprays water in the oral cavity at high speed, for example by making water into the shape of a fine droplet. When a collection of fine droplets is applied to an injection target at high speed, the droplets can repeatedly give impact to only the surface of the injection target or a portion near the surface.

As an apparatus for spraying water or the like, for example, a medical spray apparatus that uses compressed gas to mix the compressed gas and a liquid and sprays a mist that is a gas-liquid mixture from a nozzle is known (for example, patents). Reference 2).
However, the medical spray device described in Patent Document 2 uses a compressed gas, and there is a problem that a complicated structure for mixing the compressed gas and a liquid is required.

  This invention makes it an example of a subject to cope with such a problem. That is, to provide a cleaning fine mist generating device having a simple structure, and using a small amount of water, high-speed fine mist, which is fine droplets, is jetted to an injection target such as in the oral cavity, thereby damaging the human body. The present invention provides a cleaning fine mist generating device that can easily clean an injection target with high cleaning power, providing an oral cleaning device, and a cleaning micro mist generating device or an oral cleaning device. An object of the present invention is to provide a nozzle that can be cleaned, to provide a method for cleaning an oral cavity, and to provide a method for generating a fine mist for cleaning of a fine mist generating apparatus for cleaning.

In order to achieve such an object, a cleaning fine mist generating apparatus according to the present invention comprises at least the following configuration.
A fine mist generating apparatus for cleaning that injects fine mist,
A nozzle,
A liquid supply unit for supplying high-pressure liquid to the nozzle,
The nozzle includes a cylindrical liquid channel connected to the liquid supply unit;
It has a jet port that communicates with the liquid channel and jets the high-pressure liquid supplied through the liquid channel at a high speed as a fine mist that is a fine droplet.

  The intraoral cleaning apparatus of the present invention is characterized by using the cleaning fine mist generating apparatus of the present invention.

  The nozzle of the present invention is the nozzle of the cleaning fine mist generating apparatus of the present invention or the oral cavity cleaning apparatus of the present invention.

  The intraoral cleaning method of the present invention is an intraoral cleaning method using the cleaning fine mist generating device of the present invention, wherein the cleaning micro mist generating device rapidly transfers the fine mist from the injection port to the injection target. The spray target is cleaned by spraying onto the spray.

The cleaning fine mist generating method of the cleaning fine mist generating apparatus of the present invention includes at least the following configuration.
The cleaning fine mist generating method of the cleaning fine mist generating apparatus of the present invention,
A step of supplying a high-pressure liquid to the nozzle by the liquid supply unit;
The nozzle includes a step of ejecting the high-pressure liquid supplied from the liquid supply unit via the liquid channel at a high speed as a fine mist that is a fine droplet from the ejection port.

ADVANTAGE OF THE INVENTION According to this invention, the fine mist production | generation apparatus for washing | cleaning of a simple structure can be provided.
In addition, according to the present invention, high-speed fine mist, which is fine droplets, is sprayed onto a spray target such as in the oral cavity using a small amount of water, and the spray target has high cleaning power without damaging the human body. It is possible to provide a cleaning fine mist generating apparatus that can be easily cleaned by the above method.
Moreover, according to this invention, the intraoral cleaning apparatus using the fine mist production | generation apparatus for washing | cleaning can be provided.
Moreover, the nozzle used for the fine mist production | generation apparatus for washing | cleaning or an intraoral washing | cleaning apparatus can be provided.
Moreover, the intraoral washing | cleaning method using the fine mist production | generation apparatus for washing | cleaning can be provided.
Moreover, the cleaning fine mist production | generation method of the fine mist production | generation apparatus for washing | cleaning can be provided.
In addition, for example, a nurse or the like can easily clean the oral cavity of a serious patient or the like, thereby reducing labor.

The figure which shows an example of the fine mist production | generation apparatus for washing | cleaning which concerns on embodiment of this invention. The schematic diagram which shows an example of the fine mist production | generation apparatus for washing | cleaning which concerns on embodiment of this invention. The cross-sectional perspective view which shows an example of the nozzle of the fine mist production | generation apparatus for washing | cleaning. The cross-sectional perspective view which shows an example of the nozzle which provided the brush. The perspective view which shows an example of the nozzle which provided the brush. The front view which shows an example of a nozzle. The partial permeation | transmission front view which shows an example of the nozzle shown in FIG. Sectional drawing along the AA of the nozzle shown in FIG. Sectional drawing along the BB line of the nozzle shown in FIG. The partial expanded sectional view of the nozzle shown in FIG. FIG. 7 is a partially enlarged front view of the nozzle shown in FIG. 6. The figure which shows an example of the result of the simulation which injected fine mist to the injection object. The figure which shows an example of the captured image of fine mist. The figure which shows an example of the average flow velocity of fine mist. Sectional drawing which shows an example of the nozzle which provided the air jet nozzle diagonally. The figure which shows an example of the captured image of the fine mist injected from the nozzle shown in FIG. (A) is a captured image when air is ejected from an air ejection port. (B) is a captured image when air is not supplied from the air outlet. The figure which shows an example of the average flow velocity of the fine mist injected from the nozzle shown in FIG. (A) is a figure which shows the average flow velocity at the time of ejecting air from an air ejection port. (B) is a figure which shows the average flow velocity when not supplying air from an air jet nozzle. The figure which shows an example of the flow velocity in the distance of 10 mm from the jet nozzle of the fine mist injected from the nozzle shown in FIG. Sectional drawing which shows an example of the nozzle which provided the air jet nozzle diagonally. (A) is sectional drawing along an air jet nozzle. (B) is sectional drawing along the suction opening. The figure explaining the washing | cleaning rate of the plaque applied to the tooth | gear. (A) is a captured image in a state where plaque is applied to a tooth. (B) is an image obtained by binarizing the plaque applied to the tooth before cleaning. (C) is an image obtained by binarizing plaque remaining on the teeth after washing. The figure which shows an example of an artificial plaque removal experiment. (A) is a figure which shows an example of the injection target before artificial plaque removal experiment. (B) is a figure which shows an example of the injection target after artificial plaque removal experiment.

  The fine mist generation apparatus for cleaning according to the embodiment of the present invention includes a nozzle and a liquid supply unit that supplies high-pressure liquid to the nozzle. This nozzle has a cylindrical liquid flow path connected to the liquid supply section, and a high-pressure liquid communicating with the liquid flow path and supplied via the liquid flow path at a high speed as a fine mist that is a fine droplet. An injection port for injecting.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Specifically, for example, an intraoral cleaning device using a cleaning fine mist generating device will be described.
The embodiment of the present invention includes the contents shown in the drawings, but is not limited to this. In the following description of each drawing, parts that are common to the parts that have already been described are assigned the same reference numerals, and duplicate descriptions are partially omitted.

  FIG. 1 is a diagram showing an example of a cleaning fine mist generating apparatus according to an embodiment of the present invention. FIG. 2 is a schematic view showing an example of a cleaning fine mist generating apparatus according to an embodiment of the present invention. FIG. 3 is a cross-sectional perspective view showing an example of the nozzle of the cleaning fine mist generating apparatus.

  The cleaning fine mist generating apparatus 100 includes a nozzle 10 (micro mist nozzle), a water pump 30 and the like. This cleaning fine mist generating device 100 has a mechanism for generating fine mist for cleaning the oral cavity, for example. Specifically, the cleaning fine mist generating apparatus 100 is used by nurses, caregivers, and the like in hospitals, care facilities, and the like, and performs cleaning of the oral cavity of the patient (oral care).

  In the present embodiment, the cleaning fine mist generating apparatus 100 includes a nozzle 10 (micro mist nozzle), a water pump 30, a tank 103, an air pump 20, a vacuum pump 40, and the like.

When a high-pressure liquid such as water is supplied, the nozzle 10 (micro mist nozzle) ejects the fine mist 1 that is fine droplets at high speed from the ejection port 11. When water is made into a mist of fine droplets and a collection of fine droplets is applied to an injection target at high speed, it is possible to repeatedly apply a striking force only to the surface of the injection target or a portion near the surface.
The flow rate of the high-speed fine mist 1 ejected from the nozzle 10 is about 10 to 100 m / sec, and in this embodiment is about 20 to 40 m / sec.
Moreover, the average particle diameter of the fine mist 1 is about 10 μm to 30 μm, and is about 20 μm in this embodiment. The method for measuring the particle size of a fine droplet, which is a fine mist, is, for example, when the water pressure of the liquid (water) supplied to the nozzle is set to a predetermined pressure such as 6 MPa, the Sauter average at a position 200 mm directly below the nozzle. It can be measured.

A water pump 30 serving as a liquid supply unit is connected to the nozzle 10 via a liquid supply pipe 31 and supplies a high-pressure liquid such as water to the nozzle 10. The pressure (water pressure) of the liquid is about 1 MPa to 10 MPa, and in this embodiment is about 6 MPa.
The tank 103 is connected to the water pump 30 and stores a liquid such as water.

  The air pump 20 is connected to the nozzle 10 via an air supply pipe 21 and supplies high-pressure air to the nozzle 10.

  A vacuum pump 40 as a suction device is connected to the nozzle 10 via a suction pipe 41 and sucks a liquid such as water or a gas such as air from the nozzle 10.

  As shown in FIG. 2, the cleaning fine mist generating apparatus 100 is provided with a filter 101 for removing impurities in the liquid, a pressure gauge 102, a tank 103 and the like between the nozzle 10 and the water pump 30. It may be a configuration. The pressure gauge 102 measures the pressure of the high-pressure liquid supplied to the nozzle 10. A control unit (control circuit) (not shown) is configured to control the pressure of the high-pressure liquid supplied by the water pump 30 as the liquid supply unit to an optimal value based on the measurement result by the pressure gauge 102. .

  In the present embodiment, as shown in FIG. 3, the nozzle 10 communicates with the liquid channel 12 and the cylindrical liquid channel 12 connected to the water pump as the liquid supply unit, and the liquid channel 12 And the injection port 11 which injects the high-pressure liquid supplied via the high-speed liquid as a fine mist which is a fine droplet at high speed. In the present embodiment, the injection port 11 is formed at the center of the tip of the nozzle 10.

  The liquid flow path 12 is provided in a cylindrical shape at the center of the nozzle 10 and has a structure in which a liquid supply pipe 31 communicates with one end. In the present embodiment, a cylindrical liquid reservoir 12 a having a diameter larger than the diameter 13 (inner diameter) of the liquid supply pipe 31 is provided at the center of the nozzle 10. By doing so, high-pressure liquid can be efficiently supplied from the liquid reservoir 12a to the injection port 11, and fine mist can be injected from the injection port 11 continuously for a long time.

The shape of the injection port 11 may be a circular shape or an elliptical shape, or may be a polygonal shape such as a triangular shape, a quadrangular shape, or a hexagonal shape.
In the present embodiment, the nozzle 10 has an injection port 11 formed in a circular shape, and fine mist is injected from the injection port 11 in a conical shape. When a circular injection port is formed in the nozzle, the diameter of the circular injection port is about 100 μm to 500 μm, and the hole length (the length along the liquid flow direction) of the injection port is about 1 mm to 5 mm. Preferably, the diameter of the circular injection port is 100 μm and the hole length of the injection port is about 1 mm. In this case, the mist suitable for fine intraoral cleaning can be injected from the injection port 11 at high speed. It only needs to have the same flow resistance as an injection port having a diameter of 100 μm and a hole length of about 1 mm, and there are innumerable relationships between the diameter and the hole length that satisfy this flow resistance.
In addition, you may form the injection port 11 which is a rectangular thin groove | channel in a nozzle. In this case, the injection port 11 which is a rectangular narrow groove has a width of, for example, about 10 to 50 μm, and preferably about 20 to 30 μm. Moreover, the length of the injection port 11 which is a rectangular narrow groove is about 100-1000 micrometers, and about 200 micrometers is preferable. Moreover, the hole length of a jet nozzle is about 200 micrometers-5000 micrometers, and about 1000 micrometers is preferable. Even when the injection port has a rectangular shape, it has only to have a flow resistance equivalent to that of the injection port having a diameter of 100 μm and a hole length of about 1 mm, and there are innumerable relationships between the groove width, the groove length, and the hole length satisfying this. It is in. When the nozzle 10 includes the ejection port 11 formed in a rectangular shape, fine mist can be ejected from the ejection port 11 in a fan shape at high speed.

Moreover, in this embodiment, the nozzle 10 communicates with the cylindrical air flow path 14 connected to the air pump which is an air supply apparatus, the air flow path 14, and the air supplied through the air flow path 14 is supplied. An air injection port 14a that discharges toward or near the injection target of the fine mist. In the present embodiment, the air injection port 14 a is formed in the vicinity of the injection port 11 at the tip of the nozzle 10. In the present embodiment, the air injection port 14 a is formed above and below the injection port 11.
Specifically, the liquid film on the surface to be ejected or in the vicinity thereof can be removed by the air ejected from the air ejection port 14a. In this state, the fine mist can be directly applied to the injection target by injecting the fine mist from the injection port 11 toward the injection target, and the surface of the injection target can be cleaned with high efficiency.

Further, in the present embodiment, the nozzle 10 includes a suction port 15a and a cylindrical suction channel 15 that communicates with the suction port 15a and communicates with a vacuum pump 40 that is a suction device.
In the present embodiment, the suction port 15 a is provided at the tip of the nozzle 10. Specifically, a plurality of suction ports 15 a are formed near the outer peripheral portion of the tip portion of the nozzle 10.
By operating the vacuum pump 40, unnecessary fine mist, unnecessary liquid, unnecessary air and the like can be sucked from the suction port 15a.

  The cleaning fine mist generating apparatus is configured such that the suction amount of air or liquid sucked from the suction port 15a is larger than the air injection amount from the air injection port 14a. In the present embodiment, the amount of suction of air or liquid sucked from the suction port 15a is set to about 5 to 20 times the amount of air injection from the air injection port 14a, for example. In this case, unnecessary fine mist, unnecessary liquid, unnecessary air, etc. can be sucked with high efficiency.

  Note that the cleaning fine mist generating apparatus is configured such that the speed of air ejected from the air ejection port 14a is higher than the suction speed of air or liquid sucked from the suction port 15a.

FIG. 4 is a cross-sectional perspective view showing an example of the nozzle 10 </ b> B provided with the brush 18. FIG. 5 is a perspective view showing an example of the nozzle 10 </ b> C provided with the brush 18.
The nozzle shown in FIGS. 4 and 5 is provided in the vicinity of the injection port 11 and has a brush 18 that extends in the injection direction of the fine mist and keeps the distance between the injection port 11 and the injection target constant.
In this embodiment, the brush 18 is provided in the vicinity of the injection port 11 so as to surround the injection port 11 of the nozzle, and is extended in the injection direction of the fine mist. In detail, the brush 18 is provided in the outer peripheral part of the front-end | tip part of a nozzle.
The brush 18 can prevent scattering of water, fine mist, impurities such as debris generated by washing, etc. outside the oral cavity. In addition, it is preferable that this brush 18 has air permeability with respect to the air injected from the air injection port 14a. In this case, water in the space surrounded by the brush 18 and the nozzle and the injection target, fine mist, impurities such as debris generated by cleaning, etc. are prevented from scattering outside the oral cavity, and the remaining air is not sucked by the intake port. Air can be discharged out of the space.

  FIG. 6 is a front view showing an example of the nozzle 10D. FIG. 7 is a partially transparent front view showing an example of the nozzle 10D shown in FIG. FIG. 8 is a cross-sectional view taken along line AA of the nozzle shown in FIG. 9 is a cross-sectional view of the nozzle 10D shown in FIG. 7 taken along line BB. FIG. 10 is a partially enlarged cross-sectional view of the nozzle 10D shown in FIG. FIG. 11 is a partially enlarged front view of the nozzle 10D shown in FIG.

An example of the nozzle of the cleaning fine mist generating device will be described.
In the example of the nozzle shown in FIGS. 6 to 11, an ejection port 11 that is a rectangular ultrafine groove is formed at the tip of the nozzle 10 </ b> D.
A large-diameter liquid reservoir 12a (liquid channel 12) is formed at the center of the nozzle 10D, and a narrow tube 11b communicating with the injection port 11 having a narrow groove is formed. The diameter of the narrow tube 11b is shorter than the length of the injection port 11 of the narrow groove, and is formed about half in the present liquid (see FIG. 10).
The length 11LA of the injection port 11 of the narrow groove is about 400 μm, the width 11LB is about 20 μm, and the hole length (depth) of the injection port 11 is about 200 μm (see FIG. 11).

  An air injection port 14a is formed in the vicinity of the injection port 11, and a cylindrical air flow path 14 communicating with the air injection port 14a is formed in an L-shaped cross section.

FIG. 12 is a diagram illustrating an example of a result of a simulation in which fine mist is injected onto an injection target.
The inventor of the present application performed a computer simulation to confirm the effect of the fan-shaped fine mist ejected from the cleaning fine mist generating device.
Specifically, as shown in FIG. 12, assuming that teeth, teeth, and the like are assumed as injection targets, a simulation was performed by a computer when a fan-shaped fine mist was sprayed from the nozzle of the cleaning fine mist generating device. .
It has been found that when a vertically long and narrow fan-shaped mist sprayed from a nozzle is sprayed between the teeth, the fine mist can pass between the teeth at high speed, and the teeth are efficiently cleaned.

FIG. 13 is a diagram illustrating an example of a captured image of a fine mist, and FIG. 14 is a diagram illustrating an example of an average flow velocity of the fine mist. 13 and 14, the flow rate is 50 ml / min, and the pressure of the high-pressure liquid (water) supplied to the nozzle is 19 MPa.
In FIG. 14, the horizontal axis indicates the horizontal position [unit: mm], the left vertical axis indicates the vertical position [unit: mm], and the right vertical axis indicates the average flow velocity V [m / s]. In FIG. 14, the average flow velocity is shown by concentration.

  As shown in FIG. 14, the flux of the mist produced | generated from the fine mist production | generation apparatus for washing | cleaning was able to be confirmed. The average flow velocity shown in FIG. 14 was measured by a particle image flow velocity measurement method. The generated mist was irradiated with a laser sheet having a thickness of about 1 mm, and the movement of the mist was photographed with a high-speed camera. The captured video was analyzed by particle image velocimetry to obtain a flux.

  13 and 14, it was found that the fine mist injected from the nozzle outlet has a large average flow velocity at the center of the fine mist, and a small average flow velocity at a position shifted in the vertical direction.

FIG. 15 shows an air flow path so that the direction of air ejected from the air ejection port 14a provided at the tip of the nozzle 10E is ejected obliquely toward the center direction of the fine mist ejected from the ejection port 11. 14 is a cross-sectional view of a nozzle showing an example in which an air ejection port 14a communicating with 14 is provided.
In this embodiment, it is set so as to intersect the center line of the air ejection direction of the air ejection port 14a at 10 mm ahead of the ejection direction from the ejection port 11.

  In the nozzle shown in FIG. 15, the nozzle component 10F is fitted from the liquid flow path 12 side to the tip of the nozzle 10E. Since the nozzle component 10F can be individually processed with respect to the nozzle E, the nozzle 10 can be easily manufactured.

  FIG. 16 is a view showing an example of a photographed image showing the spread of the injection angle of the fine mist by the nozzle 10E shown in FIG. FIG. 16 (a) is a diagram showing the injection state of the fine mist when the flow rate is 20 ml / min and the pressure of the air supplied to the air outlet 14a is 0.5 MPa, and with respect to the center direction of the fine mist, The injection angle is about 20 degrees. FIG. 16B is a diagram showing an injection state of fine mist when air is not supplied under the same conditions, and the injection angle is about 2.5 degrees.

FIG. 17 is a diagram showing an example of the average flow rate of the fine mist by the nozzle 10E shown in FIG. FIG. 17A is a diagram showing the color map of the flow velocity (space average value) distribution of the fine mist under the same conditions as in FIG. In FIG. 17A, where the flow velocity here is the axial component of the mist, the maximum flow velocity at the axial center of the fine mist is 150.0 m / s 12.5 mm downstream from the nozzle, and the fine mist at that position is 150.0 m / s. The average flow velocity is 73.3 m / s.
FIG. 17B is a diagram showing the density map of the flow rate (space average value) distribution of the fine mist under the same conditions as in FIG. In FIG. 17B, the maximum flow velocity at the axial center of the fine mist is 68.5 m / s downstream of the nozzle 5.4 mm, and the average flow velocity of the fine mist at that position is 15 m / s. Note that the numbers arranged in the vertical direction on the right side of FIG. 17 are numerical values indicating the flow velocity (m / s) of each concentration.

  18 compares the flow velocity at a distance of 10 mm from the ejection port 11 with respect to the direction of fine mist ejection of the nozzle 10E shown in FIG. When the flow rate is 20 ml / min, it is 64.6 [m / s] when there is no air on the center line in the injection direction, and 134.3 [m / s] when 0.5 MPa of air is supplied. ]Met.

  As can be seen from FIGS. 17 and 18, when there is air assist, the flow rate of the fine mist can be accelerated, and in addition, the injection angle can be widened. Therefore, the cleaning efficiency by fine mist can be improved. Further, the liquid film on the surface of the cleaning object such as teeth can be removed by air, and the cleaning efficiency can be improved.

FIG. 19 shows an air outlet in which the direction of air jetted from the air jet outlet 14a provided at the tip of the nozzle 10G is jetted obliquely toward the center direction of the fine mist jetted from the jet nozzle 11. It is sectional drawing of the nozzle which shows an example in which the air flow path 14 connected to 14a was provided.
In this embodiment, it is set so as to intersect with the center line of the air ejection direction of the air ejection port 14a 6mm ahead of the ejection direction from the ejection port 11.
The nozzle 10G is a nozzle provided with a nozzle 14a having a diameter of 0.3 mm, a nozzle 14b having a diameter of 0.5 mm, and a nozzle 14c having a diameter of 0.7 mm.

Table 1 shows the results of measuring the cleaning power of the fine mist by changing the air supply pressure and the flow rate with respect to the diameters of 0.5 mm and 0.7 mm among the air outlets 14a of the nozzle 10G. The detergency indicates the plaque removing ability with respect to the plaque adhering surface, and Table 1 above shows the ratio (%) of the plaque removing area to the area of the artificial plaque applied to the tooth model.
This measurement was performed by injecting fine mist onto a tooth model coated with artificial plaque. The fine mist generating device for cleaning is fixed to an electric stage, maintained at a distance of 10 mm from the tooth model, and reciprocated left and right at a moving speed of 100 mm / min to inject fine mist onto the tooth model to Removal was performed. After the fine mist injection, the image of the tooth model was binarized, and the cleaning power was calculated from the area where the artificial plaque was removed and the area where the artificial plaque remained. FIG. 20A is a captured image in a state where plaque is applied to the teeth. FIG. 20B is an image obtained by binarizing the plaque applied to the teeth before cleaning. FIG. 20C is an image obtained by binarizing plaque remaining on the teeth after cleaning.

  Here, when the flow rate is 30 ml / min, the diameter of the air jet port 14a is 0.5 mm, the supply pressure of air is 0.1 MPa and 0.3 MPa, or when the flow rate is 30 ml / min, the diameter of the air jet port 14a. However, it can be seen that at any of 0.7 mm and an air supply pressure of 0.1 MPa and 0.3 MPa, a cleaning effect with a flow rate equal to or higher than 50 mi / min when there is no air assist is obtained. That is, it can be seen that a high cleaning effect can be obtained even at a low flow rate by assisting with air.

FIG. 21 is a diagram showing an example of an artificial plaque removal experiment. Specifically, FIG. 21A shows an example of an injection target before the artificial plaque removal experiment, and FIG. 21B shows an example of an injection target after the artificial plaque removal experiment.
The inventor of the present application conducted an experiment to confirm the cleaning effect by the fine mist sprayed from the fine mist generating apparatus for cleaning.
Specifically, as shown in FIG. 21 (a), a plaque stain is applied to a dental model to which an artificial plaque imitating plaque or eating residue adheres, and the artificial plaque (plaque) is colored. Thereafter, the artificial plaque (plaque) was cleaned with the fine mist sprayed from the fine mist generating device for cleaning.
As a result of the cleaning, as shown in FIG. 21 (b), artificial plaques imitating plaque, eating residue, and the like adhering to the teeth, interdental teeth, and toothpaste were able to be removed cleanly.

As described above, the cleaning fine mist generating apparatus according to the embodiment of the present invention includes the nozzle 10. The nozzle 10 is connected to a water pump 30 as a liquid supply unit that supplies high-pressure liquid. The nozzle 10 has a cylindrical liquid flow path 12 connected to a water pump 30 (liquid supply unit) and a high-pressure liquid that is in communication with the liquid flow path 12 and supplied through the liquid flow path 12. And an ejection port 11 that ejects at high speed as a fine mist that is a droplet.
For this reason, using a small amount of water, high-speed fine mist, which is fine droplets, is sprayed onto the spray target such as in the oral cavity, and the spray target is cleaned with high cleaning power without damaging the human body. It is possible to provide a fine mist generating apparatus for cleaning that can be used.

  In addition, a nurse or the like can easily clean the oral cavity or skin of a serious patient or the like using the cleaning fine mist generating device according to the embodiment of the present invention, thereby reducing the labor of cleaning. be able to.

Moreover, the fine mist generation apparatus for washing | cleaning may have the injection nozzle 11 in which the nozzle 10 was formed in the rectangular shape. In this case, the cleaning fine mist generating device is configured so that the fine mist 1 is ejected in a fan shape from the rectangular ejection port 11.
The fan-shaped fine mist is, for example, narrow in the short direction (direction perpendicular to the longitudinal direction) of the rectangular injection port 11 (the injection angle with respect to the axial direction of the nozzle is about ± 5 °). Further, the spray angle of the fan-shaped fine mist is approximately ± 30 ° (referenced to the axial direction of the nozzle) in the longitudinal direction of the rectangular spray port 11.
Regarding the velocity distribution of the fine mist, the rectangular injection port 11 (fine slit) has substantially the same width as the injection port 11 and extends in the injection direction so that the high-speed part is distributed in a band shape, and becomes slower as it deviates from the injection direction. .
Since the fine mist generating apparatus injects the fine mist having the above-described velocity distribution from the injection port 11, for example, by applying the fine mist having the above shape to the injection target such as the interdental, the interdental or the like can be very efficiently performed. The injection target can be cleaned.

In addition, regarding each injection angle, it is not restricted to embodiment mentioned above. The cleaning fine mist generating device can set the length in the short direction, the jet angle in the longitudinal direction, and the like as appropriate in accordance with the use environment with respect to the fan-shaped fine mist ejected from the ejection port 11.
For example, the cleaning fine mist generating apparatus appropriately sets the pressure to water by the water pump, the supply amount of high-pressure liquid per unit time to the nozzle 10, and the like, thereby changing the shape of the fine mist injected from the injection port 11. Can be controlled.
As described above, when the high-pressure liquid is discharged into the atmosphere through the rectangular injection port 11 that is an ultrafine groove, a fan-shaped fine mist is injected from the injection port 11. By applying this fan-shaped fine mist to the space between the teeth to be sprayed, the space between the teeth can be cleaned with high efficiency.

Moreover, the fine mist generation apparatus for cleaning according to the embodiment of the present invention has an air pump 20 as an air supply apparatus. The nozzle 10 has a cylindrical air flow path 14 connected to an air pump 20 (air supply device), and communicates with the air flow path 14 and supplies air supplied via the air flow path 14 to the fine mist 1. And an air injection port 14a that injects toward the vicinity of the injection target.
Thus, by injecting air from the air injection port 14a of the nozzle 10 so as to be in the vicinity of the collision region of the injection target of the fine mist, the liquid film present on the surface of the injection target such as the interdental or tooth surface is formed. With the liquid film removed, the fine mist can be applied to the surface of the injection target and the injection target can be cleaned with high efficiency.

Further, in the nozzle shown in FIG. 3, a rectangular fine groove injection port 11 is provided between the two air injection ports 14a. Two air injection ports 14a are formed on a straight line along the short side direction of the rectangular shape of the injection port 11.
When the fan-shaped fine mist 1 is ejected from the ejection port 11 and the air is ejected from the two air ejection ports 14a, the air is ejected from the two air ejection ports 14a. Expansion of the rectangular shape of the ejection port 11 in the short direction can be restricted.

Further, in the nozzle shown in FIGS. 15 and 19, the direction of the air ejected from the air ejection port 14 a provided at the tip of the nozzle is inclined toward the center direction of the fine mist ejected from the ejection port 11. An air outlet 14a communicating with the air flow path is provided so as to be ejected.
For this reason, the flow rate of the fine mist can be increased, the injection range of the fine mist can be widened, and the cleaning efficiency by the fine mist can be increased.

Further, the cleaning fine mist generating device has a vacuum pump 40 as a suction device. The nozzle 10 includes a suction port 15a and a cylindrical suction flow path 15 that communicates with a vacuum pump 40 as a suction device and communicates with the suction port 15a.
Therefore, by operating the vacuum pump 40, unnecessary fine mist, unnecessary liquid, unnecessary air, etc. can be sucked from the suction port 15a.

  In the cleaning fine mist generating apparatus, the nozzle 10 is provided in the vicinity of the injection port 11 and extends in the injection direction of the fine mist 1 to keep the distance between the injection port 11 and the injection target constant. 18 For this reason, it is possible to clean the injection target with high efficiency while keeping the distance between the injection port 11 and the injection target constant.

  The nozzle 10 includes a brush 18 provided in the vicinity of the injection port 11 so as to surround the injection port 11 and extending in the injection direction of the fine mist. By providing such a brush 18 on the nozzle 10, it is possible to prevent scattering of water, fine mist, impurities such as debris generated by washing out of the oral cavity.

  Moreover, according to this invention, the intraoral cleaning apparatus using the said washing | cleaning fine mist production | generation apparatus can be provided.

  Moreover, according to this invention, the nozzle of the washing | cleaning fine mist production | generation apparatus or intraoral washing apparatus mentioned above can be provided.

Further, according to the present invention, the cleaning fine mist generating method of the cleaning fine mist generating apparatus includes a step in which the water pump 30 as the liquid supply unit supplies the high-pressure liquid to the nozzle 10 and the nozzle 10 supplies the liquid. And a step of ejecting the high-pressure liquid supplied from the water pump 30 as a part via the liquid flow path 12 as a fine mist that is a fine droplet from the ejection port 11 at a high speed.
Thus, it can be easily ejected at high speed as a fine mist that is a fine droplet from the nozzle.

  In addition, according to the present invention, the method for cleaning an oral cavity using the cleaning fine mist generating device, the cleaning fine mist generating device sprays the fine mist from the injection port into the injection target oral cavity at high speed. Clean the oral cavity. For this reason, the oral cavity which is the injection target can be easily washed.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention.
Further, the embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose and configuration.
Moreover, the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.

  In the said embodiment, although the fine mist production | generation apparatus for washing | cleaning wash | cleaned the intraoral area, it is not restricted to this form. For example, a cleaning micro mist generator that cleans the skin or body of a human body or animal, etc. by applying high-speed micro mist to the skin or body of a human body or animal, etc. using a cleaning micro mist generator can do.

  Further, a portable cleaning fine mist generating device or an oral cleaning device in which a nozzle and a high-pressure supply pump are integrated with the nozzle may be used.

  The above-described cleaning fine mist generating apparatus sprays fine mist, which is fine droplets, from the injection port at high speed. For example, a plurality of fine hole portions are arranged in a line, and a minute amount is formed from the plurality of hole portions. It is also possible to eject droplets.

  DESCRIPTION OF SYMBOLS 1 ... Fine mist (fine droplet), 10 ... Nozzle (micro mist nozzle), 11 ... Injection port, 14 ... Air flow path, 14a ... Air injection port, 15 ... Suction flow path, 15a ... Suction port, 18 ... Brush: 20 ... Air pump (air supply device), 30 ... Water pump (liquid supply unit), 40 ... Vacuum pump (suction device), 100 ... Fine mist generating device for cleaning, 103 ... Tank.

Claims (10)

A fine mist generating apparatus for cleaning that injects fine mist,
A nozzle,
A liquid supply unit for supplying high-pressure liquid to the nozzle,
The nozzle includes a cylindrical liquid channel connected to the liquid supply unit;
A cleaning fine comprising: an ejection port that communicates with the liquid flow path and ejects the high-pressure liquid supplied through the liquid flow path at high speed as a fine mist that is a fine droplet. Mist generator.   2. The cleaning fine mist generating apparatus according to claim 1, wherein the nozzle has an injection port formed in a rectangular shape, and the fine mist is injected in a fan shape from the injection port. An air supply device,
The nozzle has a cylindrical air flow path connected to the air supply device;
The air injection port that communicates with the air flow path and discharges air supplied through the air flow path toward the vicinity of the injection target of the fine mist. The fine mist production | generation apparatus for washing | cleaning of Claim 2. A suction device,
The nozzle includes a suction port;
The cleaning fine mist generating apparatus according to any one of claims 1 to 3, further comprising: a cylindrical suction channel that communicates with the suction device and communicates with the suction port.   The nozzle is provided in the vicinity of the injection port, and has a brush extending in the injection direction of the fine mist to keep a constant distance from the injection port to the injection target. The fine mist production | generation apparatus for washing | cleaning in any one of Claim 4.   The said nozzle is provided in the vicinity of the said injection port so that the said injection port may be enclosed, and is provided with the brush extended in the injection direction of the said fine mist. The fine mist production | generation apparatus for washing | cleaning of description.   An intraoral cleaning device using the cleaning fine mist generating device according to any one of claims 1 to 6.   The fine mist production | generation apparatus for washing | cleaning in any one of Claims 1-6, or the nozzle of the intraoral washing apparatus of Claim 7. An intraoral cleaning method using the cleaning fine mist generating device according to any one of claims 1 to 6,
An intraoral cleaning method, wherein the cleaning fine mist generating device sprays fine mist from an injection port to an injection target at high speed to clean the injection target. A cleaning fine mist generating method of the cleaning fine mist generating device according to any one of claims 1 to 6,
A step of supplying a high-pressure liquid to the nozzle by the liquid supply unit;
The nozzle has a step of ejecting the high-pressure liquid supplied from the liquid supply unit via the liquid flow path at high speed as a fine mist that is a fine droplet from the ejection port. A method for producing a fine mist for cleaning by a fine mist producing apparatus.

Images