JP2006075775A - Ultrasonic cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nozzle shower type ultrasonic cleaning apparatus which is constituted so that a liquid is discharged from a nozzle having an ultrasonic wave radiating plane therein and brought into contact with a part to be cleaned to form a propagation route of an ultrasonic wave and the part to be cleaned is cleaned while being vibrated ultrasonically and which can be made to cope with all stains. <P>SOLUTION: A conduit 23 is formed to pass through the central parts of an ultrasonic wave transmitting body 5 and an ultrasonic vibrator 4 so that the liquid is discharged from the central part of the ultrasonic wave radiating plane 5a through the conduit 23. A drive circuit 6 is designed so that cleaning can be performed in such a high-pressure cleaning mode that the part to be cleaned is cleaned by a higher flow rate of the liquid than that of the liquid in an ultrasonic cleaning mode. As a result, firmly stuck stains such as dental plaque and sebum are removed (exfoliated) in the ultrasonic cleaning mode and the stains exfoliated in the ultrasonic mode, saburra, or the like, are blown away in the high-pressure cleaning mode so that all stains can be cleaned effectively by one unit of this ultrasonic cleaning apparatus. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultrasonic cleaning device that is suitably implemented for oral cleaning and that uses a vibration energy in an ultrasonic region to clean an arbitrary site to be cleaned.

Japanese Patent Application Laid-Open No. 2004-133867 proposes an apparatus for transmitting ultrasonic vibration generated by an ultrasonic vibrator to a site to be cleaned through a liquid ejected from a nozzle to perform cleaning. The schematic structure is shown in FIG. The ultrasonic vibration generated by the ultrasonic transducer 101 is magnified by the ultrasonic transmission body 102 and radiated to the resonance chamber 103, superimposed on the water supplied from the water replenishing port 104, and from the nozzle 105 to the oral cavity or the like. It is given to the site to be cleaned. This removes (peels) dirt that adheres strongly, such as plaque and sebum, by a shock wave generated when the cavitation bubbles generated by the ultrasonic vibration are destroyed.
JP-A-57-65370

  However, in the above-mentioned conventional technology, dirt such as plaque and sebum can be peeled off by ultrasonic waves, but the peeled dirt and food residues cannot be washed away, and they are washed away cleanly. However, there is a problem that a conventional toothbrush and a device for performing high pressure cleaning must be used in combination.

  An object of the present invention is to provide an ultrasonic cleaning apparatus capable of performing effective cleaning with a single unit against all kinds of dirt.

  The ultrasonic cleaning apparatus of the present invention supplies a liquid from a discharge means to a nozzle having an ultrasonic radiation surface inside, and causes the liquid to flow out from a discharge port formed in the nozzle to come into contact with a site to be cleaned. In the ultrasonic cleaning apparatus in which the ultrasonic wave propagation path is formed and the cleaned part is cleaned, an ultrasonic transducer is attached to one end side, and the end surface on the other end side is the ultrasonic radiation surface The flow path of the liquid is formed in the central part of the ultrasonic transmission body and the ultrasonic transducer, and the liquid is discharged from the substantially central part of the ultrasonic radiation surface via the flow path, The discharge means can further perform cleaning in a high-pressure cleaning mode in which the portion to be cleaned is cleaned with a larger flow rate than in ultrasonic cleaning.

  According to the above configuration, for example, the liquid is supplied from the discharge means to the nozzle formed in a horn shape toward the discharge port side, and the liquid is discharged from the discharge port and brought into contact with the site to be cleaned. And a relatively low ultrasonic wave having a large vibration amplitude of, for example, several tens of kHz, preferably about 20 to 60 kHz, is emitted from the ultrasonic wave emission surface formed in the nozzle. In a so-called nozzle shower type ultrasonic cleaning apparatus that removes strong dirt on the site to be cleaned, cleaning in a high-pressure cleaning mode is further enabled in addition to the ultrasonic cleaning mode. For this purpose, an ultrasonic transducer is attached to one end and the end surface on the other end is the ultrasonic radiation surface, and the liquid flow path is disposed in the center of the ultrasonic transducer. Forming and discharging the liquid from the substantially central portion of the ultrasonic radiation surface through the flow path, and the discharge means increases the pump rotation speed, etc. Also increase the liquid flow rate.

  Therefore, in the ultrasonic cleaning mode, stains such as plaque and sebum are firmly removed (peeled), and in the high pressure cleaning mode, dirt and food residues removed in the ultrasonic cleaning mode are washed away. It is possible to carry out effective cleaning against all kinds of dirt with a single unit.

  Moreover, the massage effect to gums etc. can also be acquired by repeating the high pressure washing mode and the ultrasonic washing mode periodically, or repeating the high pressure washing mode and the pause periodically.

  In the high pressure cleaning mode, the ultrasonic wave may remain emitted from the ultrasonic vibrator, but the liquid is ejected vigorously from the substantially central portion of the ultrasonic radiation surface, as in the ultrasonic cleaning mode. In addition, there is a possibility that the liquid does not spread over the entire surface of the ultrasonic radiation, and there is a possibility that the liquid ejected vigorously includes air, so that the cleaning effect by emitting ultrasonic waves cannot be expected so much. Since the ultrasonic transducer may be overheated, it is preferable not to emit ultrasonic waves.

  In the ultrasonic cleaning apparatus of the present invention, the nozzle attached to the tip of the apparatus and the ultrasonic radiation surface of the ultrasonic transmission body accommodated in the nozzle are inclined, and the flow path is formed by the ultrasonic wave. It is characterized by being bent in the transmission body.

  According to the above configuration, when cleaning the oral cavity while being held in the hand of the user, the nozzle on the front end side of the device and the ultrasonic radiation surface accommodated in the nozzle are inclined so that the user Can perform cleaning with a good posture without greatly raising the arm or lowering the face. The flow path is also bent in the ultrasonic transmission body to cause resistance to the liquid. However, as described above, the liquid can be ejected from the substantially central portion of the ultrasonic radiation surface.

  Furthermore, in the ultrasonic cleaning apparatus of the present invention, the ejection unit repeats in this order a liquid reservoir mode in which the liquid flow rate is suppressed and liquid is stored in the nozzle, an ultrasonic cleaning mode, and the high pressure cleaning mode. It is characterized by that.

  According to the above configuration, in order to obtain the above cleaning effect by sequentially repeating the ultrasonic cleaning mode and the high pressure cleaning mode, the air in the nozzle may be activated during startup when no liquid is stored in the nozzle or by high pressure water flow. When the high-pressure cleaning mode is entered, the discharge amount of the liquid from the discharge means is suppressed from the cleaning state, and the liquid storage mode in which the liquid is gradually filled in the nozzle is performed, and then the ultrasonic cleaning mode is started. Thus, in the ultrasonic cleaning mode, it is possible to eliminate bubbles that cause attenuation of ultrasonic waves and to efficiently clean the portion to be cleaned.

  As described above, the ultrasonic cleaning apparatus of the present invention is a so-called nozzle shower type ultrasonic cleaning apparatus, in which an ultrasonic vibrator is attached to one end side, and an end surface on the other end side is the ultrasonic radiation surface. Forming a liquid flow path in the central part of the ultrasonic transmission body and the ultrasonic transducer, and discharging the liquid from the substantially central part of the ultrasonic radiation surface via the flow path, In the high-pressure cleaning mode, by increasing the pump rotation speed, etc., the liquid flow rate is increased compared to the ultrasonic cleaning mode, so that cleaning in the high-pressure cleaning mode is further possible in addition to the ultrasonic cleaning mode. .

  Therefore, the ultrasonic cleaning mode removes (peels) dirt that adheres strongly such as plaque and sebum, and the high-pressure cleaning mode removes dirt, food residues, etc. removed in the ultrasonic cleaning mode. It can be washed away and can be cleaned effectively against any dirt with just one unit. Moreover, the massage effect to gums etc. can also be acquired by repeating the high pressure washing mode and the ultrasonic washing mode periodically, or repeating the high pressure washing mode and the pause periodically.

[Embodiment 1]
FIG. 1 is a cross-sectional view showing an internal configuration of an ultrasonic cleaning apparatus 1 according to the first embodiment of the present invention. The ultrasonic cleaning apparatus 1 is roughly arranged in a housing 2 and a nozzle 3 attached to the tip thereof, an ultrasonic transducer 4 arranged in the housing 2, and arranged in the housing 2 and nozzle 3. In addition, an ultrasonic transmission body (horn) 5 having one end connected to the ultrasonic transducer 4, a drive circuit 6 for driving the ultrasonic transducer 4, and a liquid (cleaning agent) applied to the nozzle 3. And a liquid supply unit 7 for supplying water.

  The housing 2 and the nozzle 3 are made of an insulating material such as a synthetic resin, and the housing 2 is formed in a cone shape (diaphragm shape) that tapers from the tubular portion on the base end side toward the nozzle 3 side. The nozzle 3 is formed to be inclined, for example, by 45 ° from the distal end portion of the housing 2. Thus, when the user cleans the oral cavity while holding the ultrasonic cleaning apparatus 1 in his / her hand, the user can raise the oral cavity in a good posture without greatly raising the arm or lowering the face. Such a narrow part can be cleaned. The nozzle 3 includes a storage space 11 that stores liquid therein, and a discharge port 12 that discharges (spouts) the liquid stored in the storage space 11 to the outside.

  FIG. 2 is a cross-sectional view for explaining the shape of the nozzle 3 in detail. The nozzle 3 is formed in a horn shape toward the discharge port 12, and it should be noted that an end plate 13 is provided at the tip thereof. The end plate 13 is formed by turning the tip of the nozzle 3 inward by 90 °, closes the outer peripheral portion of the nozzle 3, and opens at the central portion as the discharge port 12. When the outer diameter of the ultrasonic transducer 4 is a, the inner diameter of the tip of the nozzle 3 is b, and the outer diameter of the discharge port 12 is c, a ≦ b, preferably a≈b, and b: c≈10: 12, preferably b: c = 10: 12.

  That is, the end plate 13 closes the tip of the nozzle 3 that expands in a horn shape, but secures an opening having an area larger than the ultrasonic radiation surface 5 a of the ultrasonic transducer 4. As a result, a part of the liquid flowing out from the nozzle 3 can be dammed and the liquid can be stored in the nozzle 3 while ensuring a propagation path of the ultrasonic wave from the ultrasonic radiation surface 5a. It is like that. For example, the outer diameter a of the ultrasonic transducer 4 is 10 mm, the inner diameter b of the tip portion of the nozzle 3 is 12 mm, and the outer diameter c of the discharge port 12 is 10 mm.

  The ultrasonic vibrator 4 is composed of a piezoelectric vibrator made of a ceramic material such as lead titanate or quartz, and utilizes thickness vibration. The ultrasonic transmission body 5 is formed in a substantially truncated cone shape by a metal material, amplifies the ultrasonic vibration from the ultrasonic transducer 4, and radiates it from the ultrasonic radiation surface 5a. The ultrasonic transducer 4 is attached to the lower bottom surface 5d of the ultrasonic transmission body 5, and a portion 5b serving as a vibration node (amplitude is minimum) is formed to protrude from the housing 2 on the lower bottom surface 5d side. The upper bottom surface side which is supported by the body 2c and becomes the ultrasonic radiation surface 5a is bent by 45 ° and faces the storage space 11. Accordingly, the ultrasonic radiation surface 5a is also inclined by 45 °, and ultrasonic waves are emitted in the inclination direction. In addition, as a suitable metal material which comprises this ultrasonic transmission body 5, light metals, such as titanium and aluminum, and its light alloy can be used.

  The tip of the ultrasonic transmission body 5 is airtightly held and fixed to the inner peripheral surface of the housing 2 by a holding member 14 made of an elastic body. The holding member 14 is preferably made of a material that maintains desired elasticity against repeated expansion and contraction and is hard to be cured, and is realized by an O-ring made of rubber. Corresponding to the holding member 14 made of the O-ring, a concave groove may be formed on the outer peripheral surface of the ultrasonic transmission body 5 to which the holding member 14 is fastened. Similarly, on the housing 2 side, a concave groove may be formed in a portion where the holding member 14 is in close contact with the inner peripheral surface. The depth of each concave groove is desirably about 1 mm or less, for example. Alternatively, instead of the concave groove, a pair (two strips) of protrusions that sandwich the holding member 14 made of the O-ring on the outer peripheral surface of the ultrasonic transmission body 5 or the inner peripheral surface of the housing 2 may be used.

  In the ultrasonic vibration, the vibration amplitude of the ultrasonic radiation surface 5a of the ultrasonic transmission body 5 is the largest, for example, about 20 μm at 40 kHz. Therefore, preferably, the difference between the outer diameter of the ultrasonic transmission body 5 and the outer diameter of the holding member 14 may be determined according to the amount of expansion / contraction due to vibration, the elasticity of the holding member 14, and the like. It is desirable to make it. In this way, the liquid for transmitting the ultrasonic wave is stored only in the storage space 11 so that the liquid does not flood the side surface and the ultrasonic transducer 4 other than the ultrasonic radiation surface 5 a of the ultrasonic transmission body 5. In addition, it can be hermetically sealed.

  The drive circuit 6 is configured by mounting electronic components constituting an oscillation circuit or the like on a circuit board. In the present embodiment, the drive circuit 6 is driven by a battery (not shown), but can be driven by a commercial power source. The drive circuit 6 radiates relatively low ultrasonic waves having a large vibration amplitude of, for example, several tens of kHz, preferably about 20 to 60 kHz, from the ultrasonic radiation surface 5a, and removes strong dirt on the site to be cleaned such as the oral cavity. (Peel). The configuration and operation of the drive circuit 6 will be described in detail later.

  The liquid supply unit 7 includes a tank 21 that stores liquid, a pump 22, and a pipe line 23. One end of the pipe line 23 is connected to the pump 22, bent around the inside of the housing 2, and then routed in the present invention. In the present invention, the central part of the ultrasonic transmission body 5 connected to the ultrasonic transducer 4 is used. And the other end faces the storage space 11 from the center of the ultrasonic radiation surface 5a of the ultrasonic transmission body 5. This pipe 23 is also formed by bending a portion in the nozzle 3 of the ultrasonic transmission body 5 to cause resistance against the liquid. As a result, the central portion of the ultrasonic radiation surface 5a is formed as described above. The liquid can be discharged from. A drive circuit which is a discharge control means for driving the pump 22 is provided in the drive circuit 6 for driving the ultrasonic transducer 4, and its operation will be described in detail later.

  In the above description, although the tank 21 is mounted on the ultrasonic cleaning apparatus 1, a large tank may be separately placed on a washstand or the like and one end of the pipe line 23 may be connected. Alternatively, one end of the pipe line 23 may be directly connected to a tap. When directly connected to a faucet, a valve for controlling the intermittent flow of water and the amount of water is used instead of the pump 22.

  In the ultrasonic cleaning apparatus 1 configured as described above, it should be noted that when the pump 22 and its drive circuit 6 serving as the discharge means are turned on, as shown in FIG. Every second, the liquid reservoir mode, the ultrasonic cleaning mode, and the high-pressure cleaning mode are repeated in this order.

  In the liquid reservoir mode, the liquid is supplied from the pump 22 at a flow rate lower than that of the ultrasonic cleaning mode, for example, 50 cc / min, and as shown in FIG. In this mode, the liquid is stored in the storage space 11 of the nozzle 3. In the ultrasonic cleaning mode, the number of rotations of the pump 22 is increased, and liquid is supplied at a flow rate of, for example, 50 to 150 cc / min. A propagation path of the ultrasonic wave 25 is created to the cleaning part 26, and the dirt 27 such as plaque and sebum is firmly removed by the shock wave generated when the cavitation bubbles generated by the ultrasonic vibration are destroyed (peeling). ) Mode. In the high-pressure cleaning mode, the number of rotations of the pump 22 is further increased in FIG. 4C, and as shown by reference numeral 28, liquid is ejected from the nozzle 3 at a higher flow rate than in the ultrasonic cleaning mode. In this mode, dirt 27 peeled off in the ultrasonic cleaning mode and large dirt 29 such as food residues that cannot be removed in the ultrasonic cleaning mode are washed away.

  In this way, by performing the liquid storage mode after the high pressure washing mode in which air may enter the storage space 11 due to the start-up in which the liquid does not accumulate in the storage space 11 of the nozzle 3 and the high pressure water flow, The liquid gradually fills the storage space 11. As a result, when the ultrasonic cleaning mode is performed, the storage space 11 is filled with a liquid without bubbles without generating bubbles that are generated when starting with a violent water flow similar to a normal cleaning state (storage). ) And then the ultrasonic cleaning mode can be entered. Therefore, bubbles that cause attenuation of the ultrasonic waves can be eliminated from the ultrasonic wave propagation path, and the portion to be cleaned 26 can be efficiently cleaned. In addition, by repeating a series of modes, it is possible to perform effective cleaning with a single unit for any dirt that is insufficient with ultrasonic waves alone.

  Here, the provision of the end plate 13 inhibits the propagation of ultrasonic waves. However, when formed with the dimensional ratio as described above, the transmission rate of ultrasonic waves is reduced by about 10 to 20%. When bubbles are generated in the propagation path, it is reduced by 60% or more. Therefore, it is extremely effective to provide the end plate 13 to perform liquid storage and form a propagation path without bubbles.

  Further, as in the case of the start-up or high-pressure washing mode, when moving from the state in which the liquid in the storage space 11 is reduced to the ultrasonic washing mode, for example, the strength of the water flow is increased with the aim of a massage effect (high pressure washing mode In the case where the water flow is switched from a weak state to a strong state, etc., the discharge amount may be similarly suppressed so as to store the liquid in the storage space 11. The time and amount of water in each of the above modes are examples, and may be determined as appropriate.

  In the high-pressure cleaning mode, the ultrasonic wave may be emitted from the ultrasonic transducer 4, but the liquid is ejected vigorously from the substantially central portion of the ultrasonic radiation surface 5a. As described above, there is a possibility that the liquid does not spread over the entire ultrasonic radiation surface 5a, and there is a possibility that the liquid ejected vigorously includes air. Therefore, the cleaning effect by radiating ultrasonic waves cannot be expected so much, and the ultrasonic transducer 4 may be overheated, so it is preferable not to emit ultrasonic waves.

[Embodiment 2]
FIG. 5 is a cross-sectional view showing the internal configuration of the ultrasonic cleaning apparatus 31 according to the second embodiment of the present invention. The ultrasonic cleaning device 31 is similar to the ultrasonic cleaning device 1 described above, and corresponding portions are denoted by the same reference numerals and description thereof is omitted. It should be noted that in the ultrasonic cleaning device 31, a net plate 34 is provided at the tip of the nozzle 33 instead of the end plate 13. An opening 35 is formed at the center of the mesh plate 34. The inner diameter of the opening 35 is larger than the diameter of the liquid in the high-pressure cleaning mode as shown in FIG. 6C. The roughness of the mesh is preferably about 1 mm that does not greatly block the ultrasonic wave propagation path and can provide a liquid storage effect. In the case where only the ultrasonic cleaning mode is performed without using the high pressure cleaning mode, the opening 35 is not formed, and the entire surface may be a mesh plate.

  FIG. 6 is a diagram for explaining the state in each mode in the ultrasonic cleaning device 31 configured as described above. In the ultrasonic cleaning device 31 as well as the ultrasonic cleaning device 1 described above, when the power is turned on, the liquid reservoir mode shown in FIG. The sonic cleaning mode and the high pressure cleaning mode shown in FIG. 6C are repeated in this order.

  In the liquid reservoir mode, liquid is supplied from the pump 22 at a lower flow rate than in the ultrasonic cleaning mode, and the liquid is stored in the storage space 11 of the nozzle 33 by the action of the mesh plate 34. In the ultrasonic cleaning mode, the flow rate of the liquid increases, and the liquid passes through the mesh plate 34 and reaches the site to be cleaned 26. In the high-pressure cleaning mode, the flow rate of the liquid is further increased and ejected vigorously from the conduit 23 and passes through the opening 35 of the mesh plate 34 to reach the site 26 to be cleaned.

  Even when the mesh plate 34 is used in this manner, the ultrasonic wave propagation efficiency is slightly reduced, as in the case of the end plate 13, but a liquid reservoir is used to cause attenuation of the ultrasonic wave from the ultrasonic wave propagation path. Thus, the to-be-cleaned portion 26 can be efficiently cleaned. In addition, by repeating a series of modes, it is possible to perform effective cleaning with a single unit for any dirt that is insufficient with ultrasonic waves alone.

[Embodiment 3]
FIG. 7 is a graph for explaining the operation of the drive circuit in the ultrasonic cleaning apparatus according to the third embodiment of the present invention. In the present embodiment, the drive circuit has a function of detecting the quality of the liquid reservoir when performing the ultrasonic cleaning mode. The ultrasonic transducer 4 is driven at a constant voltage and at the constant frequency by a drive circuit. The ultrasonic wave propagation speed (impedance of the propagation path) varies depending on whether or not the ultrasonic radiation surface 5a is immersed in the liquid, and the drive current of the ultrasonic transducer 4 changes. The drive circuit of the present embodiment detects the change in the drive current, and when the ultrasonic radiation surface 5a is exposed to the air in the ultrasonic cleaning mode, the liquid reservoir mode is performed again, and the ultrasonic cleaning mode is restored. To do.

  Specifically, when the ultrasonic radiation surface 5a is immersed in a liquid, the relationship between the driving frequency and the impedance is as shown in FIG. 7A, and when exposed to the air, the relationship is as shown in FIG. As shown. Specifically, the ultrasonic transducer 4 is driven at a constant voltage, and the drive frequency is set near the resonance point fr or the antiresonance point fa. In this state, when the ultrasonic radiation surface 5a is exposed to the air, as shown in FIGS. 7 (a) to 7 (b), the impedance is drastically lowered when driven near the resonance point fr. Therefore, the drive current increases, and when driving near the anti-resonance point fa, the impedance increases rapidly, and thus the drive current decreases. By detecting this current change, the drive circuit can detect whether the liquid reservoir is good or not, and can move to the ultrasonic cleaning mode after the completion of the liquid reservoir is detected.

  Therefore, even if the liquid flows out of the storage space 11 by the user turning the ultrasonic cleaning device away from the mouth and facing down during the ultrasonic cleaning, the liquid storage mode is performed again, which is effective. Ultrasonic cleaning can be performed.

  Further, when the ultrasonic vibrator 4 is vibrated near the end timing of the liquid reservoir mode and it is detected that the ultrasonic radiation surface 5a is immersed in the liquid, the time specified in the mode has not elapsed. Alternatively, the mode may be switched to the ultrasonic cleaning mode, or may not be switched to the ultrasonic cleaning mode if the ultrasonic radiation surface 5a is not immersed in the liquid even after the time specified in the mode has elapsed. Thereby, it is possible to cope with a change in pump discharge pressure due to the remaining amount of the tank 21.

It is sectional drawing which shows the internal structure of the ultrasonic cleaning apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing for demonstrating in detail the nozzle shape in the ultrasonic cleaning apparatus shown in FIG. It is a figure for demonstrating the operation mode of the ultrasonic cleaning apparatus of this invention. It is a figure for demonstrating operation | movement of the ultrasonic cleaning apparatus shown in FIG. It is sectional drawing which shows the internal structure of the ultrasonic cleaning apparatus which concerns on the 2nd Embodiment of this invention. It is a figure for demonstrating operation | movement of the ultrasonic cleaning apparatus shown in FIG. It is a graph for demonstrating operation | movement of the drive circuit in the ultrasonic cleaning apparatus which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows the internal structure of the ultrasonic cleaning apparatus of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,31 Ultrasonic cleaning apparatus 2 Housing 3 Nozzle 4 Ultrasonic transducer 5 Ultrasonic transmission body 5a Ultrasonic radiation surface 6 Drive circuit 7 Liquid supply part 11 Storage space 12 Discharge port 13 End plate 14 Holding member 21 Tank 22 Pump 23 Pipeline

Claims (3)

A liquid is supplied from a discharge means to a nozzle having an ultrasonic radiation surface inside, and the liquid flows out from a discharge port formed in the nozzle and is brought into contact with a portion to be cleaned to form an ultrasonic propagation path. In the ultrasonic cleaning apparatus configured to clean the portion to be cleaned,
An ultrasonic transducer is attached to one end side, and an end face on the other end side is the ultrasonic transmission surface, and the liquid flow path is formed in the central portion of the ultrasonic transducer, The liquid is discharged from the substantially central portion of the ultrasonic radiation surface via the flow path,
2. The ultrasonic cleaning apparatus according to claim 1, wherein the discharge means is further capable of cleaning in a high-pressure cleaning mode in which the portion to be cleaned is cleaned with a larger flow rate than at the time of ultrasonic cleaning.   The nozzle attached to the front end of the apparatus and the ultrasonic radiation surface of the ultrasonic transmission body accommodated in the nozzle are inclined, and the flow path is bent and formed in the ultrasonic transmission body. The ultrasonic cleaning apparatus according to claim 1.   3. The discharge unit according to claim 1, wherein the discharge unit repeats in this order a liquid reservoir mode in which a liquid flow rate is suppressed and liquid is stored in the nozzle, an ultrasonic cleaning mode, and the high-pressure cleaning mode. Ultrasonic cleaning device.

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