JPH11319638A - Water stream jetting type ultrasonic washing nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water stream jetting type ultrasonic washing nozzle high in washing performance, relatively low in cost and also capable of using by keeping it with the hand. SOLUTION: This device is provided with an outside cylindrical body 140 fixed to the inside of a housing 110, a washing liquid passing-through space 130 provided between the side face of the outside cylindrical body 140 and the housing 110, an inside cylindrical body 150 whose outer face of the side face is closely adhered to the inside face of the side face of the outside cylindrical body 140 and which is also rotatably supported with bearings, an axial flow type impeller 170 connected to the inside cylindrical body 150 at the upstream side (the back side) of the inside cylindrical body 150, and a driving part 180 connected the axial flow type impeller 170 at the back side and also rotated. Plural first through-holes 141a are provided on the side face of the outside cylindrical body 140, and plural second through-holes 151a forming a communicative path with the first through-holes 141a are formed on the side face of the inside cylindrical body 150. The washing liquid flowing through the communicative path is jetted in a state containing bubbles generated due to repeat of the turning on and off of the communicative path by a relative rotation of both cylindrical bodies 140, 150.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water jet type ultrasonic cleaning nozzle suitable for cleaning dirt adhering to, for example, bathtubs, dishes, vehicles, outer walls of buildings, toilets, and the like. About.

[0002]

2. Description of the Related Art Conventionally, as a means for removing dirt from an object to be cleaned, for example, there is a water jet type cleaning apparatus using a plunger pump or the like. In this case, 30k
A high-pressure water flow of g / cm ^{2 to} 100 kg / cm ² is created to remove stains on the object to be cleaned.

On the other hand, as another means for removing dirt from an object to be cleaned, there is an ultrasonic cleaning apparatus known to be used for cleaning eyeglasses, small parts, and the like. This ultrasonic cleaning apparatus is an apparatus that generates ultrasonic waves by an oscillation circuit and applies the ultrasonic waves to a liquid storage tank. The object to be cleaned (eyeglasses, parts, etc.) is immersed in this liquid storage tank and used to remove dirt attached to the object to be cleaned by the cavitation effect of the ultrasonic wave and the great force of the ultrasonic wave itself. ing.

[0004] The cavitation effect means that even if the liquid does not absorb any gas, its absolute pressure is
When the temperature of the liquid falls below the vapor pressure corresponding to the temperature at that time, boiling occurs, and pores or bubbles filled with vapor are generated (however, liquids usually contain gas such as air. (The air and other gases are also liberated to form bubbles.) This is an effect utilizing the cavitation phenomenon. When bubbles generated by such a cavitation phenomenon are crushed, an extremely high pressure is generated. This is called a cavitation effect.

[0005]

However, in the case of a conventional water jet injection type washing apparatus using a conventional plunger pump or the like, the structure is complicated and very expensive. In addition, since the amount of water is also limited, there is naturally a limit in improving the cleaning effect. In addition, plunger pumps and the like are generally heavy and are not suitable for use by hand.

On the other hand, in the case of a conventional ultrasonic cleaning device,
Since the object to be washed needs to be immersed in the tank, it is not suitable for washing large articles, for example, vehicles.

[0007] The main object of the present invention is to provide a high cleaning ability,
It is an object of the present invention to provide a water jet ultrasonic cleaning nozzle that can be used by hand at a relatively low cost.

[0008]

In order to solve the above problems, a water jet type ultrasonic cleaning nozzle according to the present invention comprises an outer cylinder provided inside a housing, a side surface of the outer cylinder, and The cleaning liquid circulation space provided between the housing and the inner cylindrical body rotatably supported in a state where the outer surface of the side surface is in close contact with the inner surface of the side surface of the outer cylindrical body, and the two cylindrical bodies are relatively rotated. A driving unit for driving the outer cylindrical body, a plurality of first through holes are formed on a side surface of the outer cylindrical body, and a communication path is formed with the first through hole on a side surface of the inner cylindrical body. A plurality of second through-holes are respectively opened, and the cleaning liquid flowing through the communication path includes bubbles generated due to repeated opening and closing of the communication path due to relative rotation of the two cylindrical bodies. It is good to be characterized by being injected by.

Therefore, in the case of the water jet injection type ultrasonic cleaning nozzle according to the present invention, for example, water generally used as cleaning water is supplied from a water pipe via a hose to the housing of the water jet injection type ultrasonic cleaning nozzle. Take in. The entrapped water is sent downstream of the housing by water pressure from a water pipe. The inner cylinder and the outer cylinder provided on the downstream side are respectively provided with a plurality of through-holes, and a communication passage formed when each of the through-holes is overlaid forms a water circulation route, and At other times, the communication path is shut off, and bubbles are generated due to the cavitation phenomenon due to a decrease in water pressure.

[0010] Since a plurality of through holes are provided, and both cylinders are rotated at a relatively high speed by the drive section, a large number of the bubbles are generated due to the cavitation phenomenon. The foam is injected under pressure with water to the outside.
Therefore, if the injected water is directed to the object to be cleaned, the dirt attached to the object to be cleaned is extremely high pressure waves (cavitation effect) when many bubbles in the injected water are crushed. It can be torn off efficiently. In addition, that both the cylinders are relatively rotated by the driving unit means that the inner cylinder and / or the outer cylinder is rotated by the driving unit. When both the cylinders are rotated, the cylinders are usually rotated in opposite directions.

In the water jet type ultrasonic cleaning nozzle according to the present invention, the first through hole or the second through hole is formed at a predetermined first pitch in a circumferential direction of the outer cylinder or the inner cylinder. A plurality of cylinders are provided, and n stages are also provided at a predetermined second pitch also in a direction along the rotation axis. While rotating relatively by the pitch, the first through-hole or the second
A communication path is sequentially formed with all of the through holes, and relative to each step of the first through hole or the second through hole,
(Predetermined first pitch) × (number of arbitrary number of steps−
1) It is preferable to be characterized by being provided substantially shifted by / n.

Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, in particular, the number of bubbles generated by the cavitation phenomenon can be increased, for example, by n times as compared with the case of only one stage. In addition, the generation timing of bubbles is reduced to n times. That is, since the life of the foam is substantially constant depending on the environment, the timing at which the foam is crushed is also reduced to n times, and a pressure wave caused by an extremely high pressure change when the foam is crushed (this pressure wave is caused by air vibration outside the cleaning liquid) In other words, since the sound wave is a sound wave, the sound wave is considered to be a sound wave. Therefore, the frequency can be easily set in the ultrasonic region, and the cleaning ability can be made higher than that in the case of the frequency in the audible frequency region.

Further, in a compact water jet type ultrasonic cleaning nozzle, the number of through holes provided in both cylinders is limited by the size limitation, so that even in the case of a compact cylinder size, the size of the ultrasonic region is limited. It is preferable to use this structure that is easy to produce a frequency.

In the water jet type ultrasonic cleaning nozzle according to the present invention, the outer cylindrical body and / or the inner cylindrical body may include:
It is preferable to be formed of porous metal or porous ceramics. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the outer cylinder and / or the inner cylinder have fine holes, and both the cylinders rotate relatively. Therefore, it is easy to induce a cavitation phenomenon. That is, bubbles are easily formed, and the cleaning ability can be improved. In the case of using ceramics, the strength is particularly preferable.

In the water jet type ultrasonic cleaning nozzle according to the present invention, it is preferable that an axial flow impeller rotated by a driving unit is provided on the upstream side of the two cylindrical bodies. still,
Although one axial flow impeller may be used, two or more axial flow impellers may be used so as not to secure high durability. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, as described above, the water pressure to be jetted from the jet port of the water jet type ultrasonic cleaning nozzle is higher than when only the water pressure from the water pipe is used. Since it can be raised, the cleaning ability can be further improved.

When water is supplied from a water pipe via a long hose, the water pressure is low. Therefore, it is preferable to provide an axial impeller as described above. Further, the water pressure sent to the two cylinders is increased by the axial flow impeller, so that the water pressure fluctuation at the time of opening and closing the communication passage also increases. Therefore, the cavitation phenomenon is easily induced because the pressure also fluctuates greatly on the low pressure side. Therefore, bubbles are easily formed, and the cleaning ability can be improved.

In the water jet type ultrasonic cleaning nozzle according to the present invention, it is preferable that the axial flow impeller is formed of porous metal or porous ceramic. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the axial flow impeller has fine holes, so that the cavitation phenomenon is easily induced. Therefore, bubbles are easily formed, and the cleaning ability can be improved. In the case of using ceramics, the strength is particularly preferable.

In the water jet ultrasonic cleaning nozzle according to the present invention, it is preferable that a part or the whole of a part facing the route through which the cleaning liquid passes inside the housing is coated with a porous metal or a porous ceramic. . Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the surface or parts facing the route through which the cleaning liquid passes can be coated with porous metal or porous ceramic inside the housing. Since the portion provided with the coating has fine holes, the cavitation phenomenon is easily induced. Therefore, bubbles are easily formed, and the cleaning ability can be improved. Further, when coated with ceramics, the strength is particularly preferable.

[0019] The water jet type ultrasonic cleaning nozzle according to the present invention may have a rotation speed varying means for varying the rotation speed of the drive unit. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the rotation speed of the cylinder to be rotated by the drive unit is variable. Therefore, the bubble generation timing is variable, and the frequency of the pressure wave when the bubble is crushed is also variable as described above. That is, in the case of the water jet ultrasonic cleaning nozzle according to the present invention, it is possible to generate an optimum frequency for each object to be cleaned.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A water jet type ultrasonic cleaning nozzle according to an embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a view showing a water jet type ultrasonic cleaning nozzle according to an embodiment of the present invention. FIG. 1 (A) is a front view, FIG. 1 (B) is a sectional view, and FIG. FIG. 4 is a partially cutaway side view showing an outer cylindrical body used for a water jet ultrasonic cleaning nozzle according to an embodiment of the present invention.
-It is a cross section of the A line part. FIG. 3 is a view showing an inner cylindrical body used for the water jet ultrasonic cleaning nozzle according to the embodiment of the present invention. FIG. 3 (A) is a partially cutaway front view, and FIG. ) Is a partially cutaway side view, and FIG. 4 is a cross-sectional view showing a combination of a housing, an outer cylindrical body, and an inner cylindrical body used for a water jet ultrasonic cleaning nozzle according to an embodiment of the present invention from the upstream side. Drawing 5 and Drawing 5 are explanatory views of the relation of the 1st penetration hole and the 2nd penetration hole of the water jet injection type ultrasonic cleaning nozzle concerning an embodiment of the invention.

The water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, as shown in FIG.
An outer cylindrical body 140 fixed inside a housing 110 formed in a substantially pistol shape; a cleaning liquid circulation space 130 provided between a side surface of the outer cylindrical body 140 and the housing 110; The inner cylinder 150 is rotatably supported in a state in which the outer surface of the side is in close contact with the inner surface of the side surface, and the inner cylinder 150 is connected to the inner cylinder 150 on the upstream side (rear side) of the inner cylinder 150. It has an axial-flow type impeller 170 and a drive unit 180 for connecting and rotating the axial-flow type impeller 170 on its rear side.

The housing 110 has a substantially cylindrical housing body 111 and a grip 115 protruding below the housing body 111. On the back side of the housing main body 111, a space 113 sufficient to fix the front side of the drive unit 180 and a wall 112 for shielding the front side of the space 113 are provided. At the center of the wall 112, the shaft 1
Opening 112 for supporting and projecting 81
a is provided.

An opening 114 for distributing a cleaning liquid is provided at a joint portion between the housing body 111 and the grip 115.
Is provided. Inside the grip portion 115,
On the upstream side of the opening 114, a pipe 116 for flowing a cleaning liquid is provided in continuity with the opening 114. An electromagnetic valve (not shown) is provided in the middle of the flow pipe 116.

A switch 116 is provided on the front side of the grip 115 so as to protrude from the inside. The switch 116 is connected to the solenoid valve (not shown) and the driving unit 18.
0 is for on / off control. Therefore, the switch 116, the solenoid valve (not shown), and the driving unit 1
80 is provided with a wiring (not shown).

From the lower end of the grip portion 115, an inflow portion 116a, which is a base end portion of the distribution tube portion 116 and is an inflow port for the cleaning liquid, protrudes. In this base end portion 116a,
Connecting the not shown hose, but the outer periphery of the base end portion 116a, stopper preventing tooth 116a ₁ missing are formed.

As shown in FIG. 3, the inner cylinder 150 has a cylindrical main body 151, a nozzle 152 extending on the front side of the main body 151, and a rear side of the main body 151 closed. And a rear body portion 153 that is extended for the purpose.

The nozzle portion 152 has a flat ring-shaped portion 152.
a, and a cylindrical nozzle tip 152b protruding in a cylindrical shape around the center opening 152c on the front side of the flat plate ring-shaped portion 152a. The nozzle tip 152b also serves as a rotating shaft, and is used for an outer cylindrical body 1 described later.
It is a portion that is rotatably in contact with the inner peripheral surface of the opening 142a of the forty. The back body part 153 includes a disc body part 153a and the rotating shaft part 1 protruding from the center of the back face side of the disc body part 153a.
53b.

A plurality of second through-holes 151a are provided on the side surface of the main body 151 in a circular shape at a predetermined first pitch in a circumferential direction thereof, and a plurality of second through-holes 151a are also provided in a direction along the rotation axis. And n stages (n is a natural number, and here, for example, n = 8) are provided.

As shown in FIG. 2, the outer cylindrical body 140 includes a cylindrical main body 141 and the cylindrical main body 141.
4 (see FIG. 4).
), And the main body 141 and the cross-shaped body 143 are separate from each other, and close the opening surface on the front side of the cylindrical main body 141 except for protruding the nozzle tip 152b. And a substantially flat ring-shaped front body 142 extending from the front.

The main body 141 has the above-described second
A plurality of circular first through holes 14 in the same number as the through holes 151a
1a is opened as follows. First through hole 141
a, while the inner cylinder 150 rotates by the predetermined first pitch with respect to the outer cylinder 140, a communication path is sequentially formed with all of the through holes 151a, and the second Hole 151
Each of the steps a is provided with a relative shift of [predetermined first pitch] × [the number of arbitrary steps-1] / 8.

The front body 142 has an opening 142a at the center thereof for projecting the nozzle tip 152b. The front body part 142 has a front side outer periphery protruding from the front side as a cylindrical part 142b. This cylindrical part 1
Reference numeral 42b denotes a portion used for fixing to the housing 110 and for closing the front side of the cleaning liquid circulation space 130. The front body part 142 is fixed to the main body part 141 by fastening parts such as screws (not shown).

As shown in FIG. 4, the cruciform portion 143 has a cruciform portion 143a and a protruding portion projecting from the tip of the cruciform portion 143a toward the rear side along the inner surface shape of the housing 110. 143b. Cross-shaped part 143
At the center of a, openings 143a ₁ for projecting while rotatably supporting a rotating shaft portion 153b of the inner tubular body 150 is provided. The projecting portion 143b is a portion used for fixing to the housing 110.

The axial-flow type impeller 170 has a central bearing 17.
0a and a blade 170b provided on the outer periphery thereof. The bearing portion 171a is configured to pivotally support the rotating shaft portion 153b of the inner cylindrical body 150 on its front side, and to pivotally support the shaft portion 181 of the driving section 180 on its rear side.

The drive section 180 is a waterproof AC motor. A waterproof packing 182 is attached to the driving section 180.
81 are provided.

It is to be noted that in FIG.
Reference numerals 1 and 122 denote ring-shaped bearing portions, respectively.

The water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention having the above-described structure is, for example,
It is assembled as follows. The bearing 122 is fitted into the rotating shaft 153 b of the inner cylinder 150. This state is inserted inside the main body 141 and the substantially cross-shaped body 143 of the outer cylinder 140. Inner cylinder 1 inserted
The bearing 121 is fitted around the outer periphery of the nozzle tip 152b of the nozzle 50. While fitting the front body 142 (see FIG. 2) into the nozzle tip 152b, the front body 142 is fixed to the main body 141 of the outer cylindrical body 140 with fastening parts such as screws (not shown).

This state is mounted on the front side of the bearing 170a of the axial flow impeller 170, and further, the shaft 181 of the drive unit 180 is mounted on the rear side of the bearing 170a of the axial flow impeller 170. . This state is set on one side of the housing 110 (formed of two members on the left and right). With respect to one side of the housing 110, the cylindrical portion 142b of the outer cylindrical body 140 and the projecting portion 1
43b and the drive unit 180 are fixed with fastening parts such as screws (not shown).

A switch 116 is also set on one side of the housing 110, and wiring (not shown) is
It is connected to an electromagnetic valve (not shown) and the drive unit 180. In this state, the other side of the housing 110 is put on, and the above-mentioned opposite sides are respectively fixed with fastening parts such as screws (not shown), and one side and the other side of the housing 110 are fastened with screws (not shown). Secure with parts.

The water jet ultrasonic cleaning nozzle 100 according to the embodiment of the present invention thus assembled is
For example, it operates as follows. A hose (not shown) is connected to the water jet ultrasonic cleaning nozzle 100,
The tip of the hose is connected to the faucet of the water pipe, and it is assumed that the faucet is open.

When the switch 116 is turned off, water as a cleaning liquid is shut off by the solenoid valve (not shown) just before the solenoid valve. Switch 1
When the valve 16 is turned on, the solenoid valve is opened, and water enters the cleaning liquid flow space 130 (see FIGS. 1 and 4) via the axial flow impeller 170. At this time, the axial flow type impeller 170 (and the inner cylindrical body 150) also starts rotating, so that the water pressure is higher than the water pressure from the water pipe (normally about 1.5 kg / cm ² ) (for example, 4 kg / cm ² ). cm about ²⁾
And sent in the direction of the washing liquid distribution space 130.

The water at this stage already contains the axial impeller 1
Some bubbles due to the cavitation phenomenon due to the rotation of 70 are included. The water sent into the cleaning liquid circulation space 130 also enters the plurality of first through holes 141a of the outer cylinder 140. Plural first through holes 1 of outer cylinder 140
The first through-holes 141a of a part of the number of the first through-holes 141a, the first through-holes 141a at predetermined positions, and the inner cylindrical body 15
The number of the second through-holes 151a, which is the same as the number of the second through-holes 151a, is overlapped with each other to form a water communication passage (that is, the communication passage is formed). It is open.) In this case, water passes only through the communication passage, and the water enters the inside of the inner cylinder 150 side. On the other hand, where the communication path is not formed (that is, the communication path is in a closed state), water is blocked by the side surface of the inner cylinder 150. Since the inner cylinder 150 has also started to rotate, the open state of the communication passage sequentially moves to the first and second through holes 141a and 151a at other positions.

Specifically, the first and second through holes 141
a and 151a are formed as described above.
As shown in the figure, suppose that the first stage of the first through-hole 141a and the first stage of the second through-hole 151a are completely overlapped at a certain point in time, and the communication path is completely opened. In this part, water passes through this communication passage. At this time, the first
The second stage of the through-hole 141a and the second stage of the second through-hole 151a have begun to partially overlap or have not yet overlapped, so that the communication path is partially opened. Or, it is still closed. The first and second through holes 141a and 151a in the third to eighth stages
Is the same, but the first and second through holes 141 in the eighth stage
a, 151a, the degree of overlap is smaller or the state is not yet overlapped.

More specifically, for example, the inner cylinder 150
The outer diameter of the side surface of the first and second through holes 1 is 80 mm.
The opening size of the first through-holes 141a and 151a is 1.5 mm in diameter, and the first pitch of the second through-holes 151a (the first through-holes 141a).
The pitch a is also formed in accordance with this. ) Is 3.5
mm. Therefore, in this case, the difference between the first and second through-holes 141a and 151a due to the difference of one step is [predetermined first pitch] × [numerical number of arbitrary steps-1] / 8 = 3.5 mm × １ ／/ 8 ≒ 0.44 mm.

Therefore, the first and second through holes 141 in the first stage
a and 151a completely overlap, 1.5 m
Since m / 0.44 mm ≒ 3.4, the first and second through holes 141a and 151a in the fourth stage partially overlap and are partially opened. The first and second through holes 141a and 151a in the fifth to eighth stages are in a closed state in which they do not yet overlap. Of course, 3 more than the second stage
The first and second through holes 141a of the fourth stage than the third stage and the third stage
And 151a overlap with each other in the first and second stages.
Is smaller than the degree of overlap between the through holes 141a and 151a.

Further, for ease of explanation, the opening size of the first and second through holes 141a, 151a is set to a diameter of 1.
Assume that it is 0.44 mm instead of 5 mm. This 0.44mm
Are the first and second through holes 141a and 141
51a, which is the same as the deviation of 0.44 mm, when the first and second through holes 141a and 151a in the first stage are completely overlapped, the first and second through holes in the second to eighth stages are the same. The through-holes 141a and 151a are in a closed state where they do not yet overlap.

At this time, assuming that the inner cylinder 150 is rotated at 60 revolutions / second, the frequency of opening and closing the communication passage per second is (80 mm × 3.14 / 3.5 mm) × 60 × 8 steps ≒ 34400 Becomes Therefore, the communication passage corresponding to 34.4 kHz is opened and closed. Therefore, when the communication path is opened and closed, a decrease in water pressure occurs, and a cavitation phenomenon occurs.
Occurs at a frequency of Then, the water containing the bubbles collects on the inner side of the inner cylindrical body 150, while the water pressure from the upstream side is constantly applied, or is in a state equivalent to that constantly applied. So the nozzle tip 15
It will be injected vigorously forward from 2b.

Therefore, by applying the water containing the foam to the object to be cleaned, the dirt attached to the object to be cleaned is cavitation in which the bubbles are crushed at a frequency corresponding to 34.4 kHz and an extremely high pressure wave (ultrasonic wave) is generated. The effect and the pressurized water pressure will effectively remove it.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the two cylindrical bodies 140 and 15 are used.
Zero means one of the rotations or both of the rotations (however, in this case, the rotations in opposite directions are preferable).
Therefore, the cavitation phenomenon can be generated, so that not only the inner cylinder 150 is rotated but only the outer cylinder 140 is rotated or both the cylinders 140 and 150 are rotated as described above. May be moved. Even when both the cylinders 140 and 150 are rotated, it can be easily realized by adding gears and the like.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the route for circulating the cleaning liquid may be another route. For example, an opening is provided on the back surface of the inner cylinder 150 and the front surface of the inner cylinder 150 is closed. As a result, the cleaning liquid from the upstream side on the back surface of the inner cylinder 150 is supplied to the inside of the inner cylinder 150 → the second through-hole 151a → the first through-hole 141a → the cleaning liquid circulation space 1
The cleaning liquid may be circulated through the route 30 and the front side of the cleaning liquid distribution space 130 may be opened so that the cleaning liquid is sprayed from the center as much as possible.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the first and second through holes 141 are provided.
Although the shapes of a and 151a are circular shapes that are easy to process, other shapes such as a rectangle, an ellipse, and a slit may be used. Further, the shapes of the first and second through holes 141a and 151a may not be the same.

The second through hole 151 of the inner cylinder 150
The arrangement of a and the arrangement of the first through-holes 141a of the outer cylinder 140 may be reversed. Further, the arrangement is not limited to the above. For example, the above-described arrangement for each stage may be exchanged, or the arrangement may be completely random (however, if the above-described principle is ignored, it may not be possible to set the ultrasonic region depending on the arrangement). . In the above description, the number of stages is, for example, eight.
The size is appropriately set according to the size of the target, the target frequency, the capability of the drive unit 180, and the like.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the first and second through holes 141a, 151a are provided only on the side surfaces of the two cylindrical bodies 140, 150.
Are provided, but a surface that contacts each other is formed on the back side of both cylinders 140 and 150, and the first and second surfaces are also provided on that surface.
The same through-hole as the through-holes 141a and 151a may be provided.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the inner cylinder 150 and the outer cylinder 140 are made of porous metal or porous ceramic so as to easily induce a cavitation phenomenon. Is also good. In particular, when a porous ceramic is used,
The strength of the inner cylinder 150 and the outer cylinder 140 is also preferable.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the axial flow type impeller 170
Porous metal or porous ceramics may be used so as to easily induce the cavitation phenomenon. Also, in particular,
When the porous ceramic is used, the axial flow impeller 17
It is also preferable in terms of strength of 0.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the part inside the housing 110 and facing the route through which the cleaning liquid passes is entirely or partially for the same reason as described above. Then, it may be coated with a porous metal or a porous ceramic. For example, in the axial-flow type impeller 170, the surface of the metal impeller may be coated with a porous metal or a porous ceramic. However, as long as it is the inner surface of the housing, a cylindrical body made of, for example, a porous metal or a porous ceramic may be attached in close contact with the inner surface of the housing.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the drive unit 180 is a (waterproof type) AC motor, but it is a (waterproof type) DC motor or a (waterproof type) stepping motor. Other rotatable driving devices such as a motor may be used. For example, waterproof DC
When using a motor, a regulator may be added to the input side. As a result, an AC power supply such as a household power supply and a DC power supply such as a battery can be used together as an input power supply for the water jet ultrasonic cleaning nozzle 100. If a voltage changing means such as a variable resistor is added to the input side, the rotation speed can be made variable.

The direction of rotation by the drive unit 180 need not be constant. For example, when a waterproof stepping motor is used for the drive unit 180, the rotation direction can be freely controlled in two directions, left and right. By the way, when the drive unit 180 is a (waterproof) AC motor,
The rotation speed can be changed by adding an inverter circuit.
It is not very desirable in terms of cost. Note that the rotation speed of the drive unit 180 is fixed, and a speed change mechanism (not shown) such as a speed change gear is connected to the drive unit 180 so that the axial-flow type impeller 17 is connected.
The rotation speed of 0 and the inner cylinder 150 (including the outer cylinder 140 in some cases) may be variable.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the axial flow type impeller 170
It is also possible to omit it. This is because there is a case where the water pressure from the water pipe is sufficient or a case where a water pressure increasing means is provided outside. However, when the connected hose or the like becomes longer, the water pressure from the water pipe decreases. Therefore, it is preferable to provide the axial-flow type impeller 170. The axial-flow type impeller 170 raises the water pressure.
In the vicinity of 0, the hydraulic pressure fluctuation can be increased by opening and closing the communication path by the first and second through holes 141a and 151a. Therefore, the axial-flow type impeller 170 greatly varies the water pressure here also on the low pressure side. Therefore, it is preferable to provide the axial-flow type impeller 170 because the cavitation phenomenon can easily occur here.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the axial flow type impeller 170
Two or more may be provided. In this case,
It is not necessary to ensure high durability of the axial-flow type impeller 170.

In the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention, the cleaning liquid is not limited to water. Detergent or the like may be mixed in, or a liquid other than water and having a cleaning effect may be used.

The water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention has a structure in which the communication passage is opened and closed at the frequency of generation of ultrasonic waves. However, the number and arrangement of the first and second through-holes 141a and 151a are changed so that the communication path is opened and closed at a frequency of a level at which sound waves in the audible frequency range are generated, although the cleaning ability is reduced. You may.

Although the water jet type ultrasonic cleaning nozzle 100 according to the embodiment of the present invention can be used by holding it by hand, it goes without saying that the above-described structure may be applied to increase the size.

[0064]

As described above, the water jet type ultrasonic cleaning nozzle according to the present invention is provided between the outer cylinder provided inside the housing and the side surface of the outer cylinder and the housing. Washing liquid circulation space, a state in which the side outer surface is in close contact with the side inner surface of the outer cylindrical body, and an inner cylindrical body that is rotatably supported, and a driving unit that relatively drives the two cylindrical bodies to rotate. A plurality of first through-holes on the side surface of the outer cylinder, and the first through hole on the side surface of the inner cylinder.
A plurality of second through-holes forming a communication path are respectively opened by the through-holes, and the cleaning liquid flowing through the communication path is used to repeatedly open and close the communication path by the relative rotation of the two cylindrical bodies. It is characterized in that it is sprayed in a state containing bubbles generated due to it.

Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, for example, water generally used as cleaning water is supplied from a water pipe via a hose to the housing of the water jet type ultrasonic cleaning nozzle. Take in. The entrapped water is sent downstream of the housing by water pressure from a water pipe. The inner cylinder and the outer cylinder provided on the downstream side are respectively provided with a plurality of through-holes, and a communication passage formed when each of the through-holes is overlaid forms a water circulation route, and At other times, the communication path is shut off, and bubbles are generated due to the cavitation phenomenon due to a decrease in water pressure.

Since a plurality of through holes are provided, and both cylinders are rotated at a relatively high speed by the drive unit, a large number of bubbles are generated due to the cavitation phenomenon. The foam is injected under pressure with water to the outside.
Therefore, if this injected water is directed to the object to be cleaned, the dirt attached to the object to be cleaned is extremely high when a large number of bubbles in the injected water are crushed (cavitation effect). It is torn off efficiently.

Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the cavitation effect can be brought out by the above-described configuration, so that a water jet type ultrasonic cleaning nozzle having high cleaning ability can be provided. In addition, since it is not necessary to use expensive components, the water jet type ultrasonic cleaning nozzle according to the present invention can be provided at low cost.

In the water jet type ultrasonic cleaning nozzle according to the present invention, the first through hole or the second through hole is formed at a predetermined first pitch in a circumferential direction of the outer cylinder or the inner cylinder. A plurality of cylinders are provided, and n stages are also provided at a predetermined second pitch also in a direction along the rotation axis. While rotating relatively by the pitch, the first through-hole or the second
A communication path is sequentially formed with all of the through holes, and relative to each step of the first through hole or the second through hole,
(Predetermined first pitch) × (number of arbitrary number of steps−
1) It is preferable to be characterized by being provided substantially shifted by / n.

Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, in particular, the number of bubbles generated by the cavitation phenomenon can be increased, for example, by n times as compared with the case of only one stage. In addition, the generation timing of bubbles is reduced to n times. That is, since the life of the foam is substantially constant depending on the environment, the timing at which the foam is crushed is also reduced to n times, and a pressure wave caused by an extremely high pressure change when the foam is crushed (this pressure wave is caused by air vibration outside the cleaning liquid) In other words, since the sound wave is a sound wave, the sound wave is considered to be a sound wave. Therefore, the frequency can be easily set in the ultrasonic region, and the cleaning ability can be made higher than that in the case of the frequency in the audible frequency region.

In a compact water jet type ultrasonic cleaning nozzle, the number of through holes provided in both cylinders is limited due to size restrictions. It is preferable to use this structure that is easy to produce a frequency.

Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, a nozzle which can be used by hand can be easily realized. Further, since the ultrasonic waves can be easily generated, the cleaning ability can be further increased.

In the water jet type ultrasonic cleaning nozzle according to the present invention, the outer cylindrical body and / or the inner cylindrical body may include:
It is preferable to use a porous metal or porous ceramic. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the outer cylinder and / or the inner cylinder have fine holes, and both the cylinders rotate relatively. Therefore, it is easy to induce a cavitation phenomenon. That is, bubbles are easily formed, and the cleaning ability can be improved.
In the case of using ceramics, the strength can be particularly improved.

In the water jet type ultrasonic cleaning nozzle according to the present invention, it is preferable that an axial flow impeller rotated by a driving unit be provided upstream of the two cylindrical bodies.
The axial flow impeller may be one, but may be two or more in order not to secure high durability. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, as described above, the water pressure to be jetted from the jet port of the water jet type ultrasonic cleaning nozzle is higher than when only the water pressure from the water pipe is used. Since it can be raised, the cleaning ability can be improved.

When water is supplied from a water pipe via a long hose, the water pressure is low, and thus it is preferable to provide the axial-flow type impeller. Further, the water pressure sent to the two cylinders is increased by the axial flow impeller, so that the water pressure fluctuation at the time of opening and closing the communication passage also increases. Therefore, the cavitation phenomenon is easily induced because the pressure also fluctuates greatly on the low pressure side. Therefore, bubbles are easily formed, and the cleaning ability can be improved.

In the water jet type ultrasonic cleaning nozzle according to the present invention, the axial flow impeller is preferably formed of porous metal or porous ceramics. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, since the axial flow type impeller has fine holes,
Cavitation phenomenon is easily induced. Therefore, bubbles are easily formed, and the cleaning ability can be improved. In the case of using ceramics, the strength can be particularly improved.

In the water jet type ultrasonic cleaning nozzle according to the present invention, a part or the whole of the part facing the route through which the cleaning liquid passes inside the housing is coated with porous metal or porous ceramics. Is preferred. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the surface or parts facing the route through which the cleaning liquid passes can be coated with porous metal or porous ceramic inside the housing. Since the portion provided with the coating has fine holes, the cavitation phenomenon is easily induced.
Therefore, bubbles are easily formed, and the cleaning ability can be improved. Further, when coated with ceramics, the strength can be particularly improved.

The water jet type ultrasonic cleaning nozzle according to the present invention may include a rotation speed varying means for varying the rotation speed of the drive unit. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the rotation speed of the cylinder to be rotated by the drive unit is variable. Therefore, the bubble generation timing is variable, and the frequency of the pressure wave when the bubble is crushed is also variable as described above. That is, in the case of the water jet ultrasonic cleaning nozzle according to the present invention, it is possible to generate an optimum frequency for each object to be cleaned. Therefore, in the case of the water jet type ultrasonic cleaning nozzle according to the present invention, the cleaning ability can be efficiently exhibited for each object to be cleaned.

As described above, in the water jet type ultrasonic cleaning nozzle according to the present invention, the cleaning ability is improved, so that the detergent can be saved and the time required for cleaning is greatly reduced. Can be.

[Brief description of the drawings]

FIG. 1 is a diagram showing a water jet type ultrasonic cleaning nozzle according to an embodiment of the present invention, wherein FIG. 1 (A) is a front view and FIG. 1 (B) is a cross-sectional view.

FIG. 2 is a partially broken side view showing an outer cylindrical body used for the water jet ultrasonic cleaning nozzle according to the embodiment of the present invention [the broken portion is a cross section taken along line AA of FIG. 4; is there. ].

FIG. 3 is a view showing an inner cylindrical body used in the water jet ultrasonic cleaning nozzle according to the embodiment of the present invention, wherein FIG. 3A is a partially cutaway front view, and FIG. Is a partially broken side view.

FIG. 4 is a cross-sectional view showing a combination of a housing, an outer cylindrical body, and an inner cylindrical body used in the water jet ultrasonic cleaning nozzle according to the embodiment of the present invention from an upstream side thereof.

FIG. 5 is an explanatory diagram illustrating a relationship between a first through hole and a second through hole of the water jet ultrasonic cleaning nozzle according to the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Water jet ultrasonic cleaning nozzle 110 Housing 130 Cleaning liquid circulation space 140 Outer cylinder 141a First through hole 150 Inner cylinder 151a Second through hole 170 Axial impeller 180 Drive unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI B60S 1/54 B60S 1/54 Z // A47L 11/38 A47L 11/38

Claims (7)

[Claims] 1. An outer cylinder provided inside a housing, a cleaning liquid circulation space provided between a side surface of the outer cylinder and the housing, and an outer surface of a side surface in close contact with an inner surface of a side surface of the outer cylinder. And an inner cylinder that is rotatably supported in a rotatable state, and a drive unit that relatively rotates and drives the two cylinders. A plurality of first cylinders are provided on a side surface of the outer cylinder. A plurality of second through-holes are formed in the side surface of the inner cylindrical body, the plurality of second through-holes forming communication paths with the first through-holes. A water jet type ultrasonic cleaning nozzle, which is jetted in a state containing bubbles generated due to repetition of opening and closing of the communication path due to relative rotation of a cylinder. 2. A plurality of the first through holes or the second through holes are provided at a predetermined first pitch in a circumferential direction of the outer cylindrical body or the inner cylindrical body, and a direction along a rotation axis. The second through hole or the first through hole is provided while the two cylinders relatively rotate by the predetermined first pitch. The first
A communication path is sequentially formed with all of the through holes or the second through holes, and relative to each stage of the first or second through holes, a predetermined (first predetermined through hole) is formed. 2. The water jet type ultrasonic cleaning nozzle according to claim 1, wherein the nozzles are provided substantially shifted from each other by (pitch) × (numerical number of arbitrary stages-1) / n. 3. The water jet type ultrasonic cleaning nozzle according to claim 1, wherein the outer cylindrical body and / or the inner cylindrical body are formed of a porous metal or a porous ceramic. 4. The water jet type super-cooler according to claim 1, wherein an axial-flow type impeller rotated by a driving unit is provided upstream of the cylindrical bodies. Sonic cleaning nozzle. 5. The water jet type ultrasonic cleaning nozzle according to claim 4, wherein said axial flow impeller is formed of porous metal or porous ceramic. 6. A part of the inside of the housing facing a route through which a cleaning liquid passes is partially or entirely coated with a porous metal or a porous ceramic. The water jet type ultrasonic cleaning nozzle according to 4 or 5. 7. A rotating speed varying means for varying a rotating speed of the driving unit.
The water jet type ultrasonic cleaning nozzle according to 3, 4, 5 or 6.