JP2003305060A - Washing apparatus for dental technic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing apparatus for dental technic of excellent workability, capable of supplying and stopping dry steam, wet steam and hot water of good quality and stable pressure and flow with good responsiveness in dental mechanics work. <P>SOLUTION: This washing apparatus for dental technic is provided with a steam generating container 6 having a gas phase G and a liquid phase L inside. A dry steam discharge passage 13 is connected in a communicating manner to the gas phase G side of the steam generating container 6, and a wet steam discharge tube 10 having a gas phase pore 10a opened to the gas phase G and a liquid phase pore 10b opened to the liquid phase L is inserted in the steam generating container 6. Dry steam from the dry steam discharge passage 13, and wet steam from a wet steam discharge passage 14 communicating with the wet steam discharge tube 10 are selectively jetted from a common jet nozzle 21. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental technician cleaning apparatus for removing waxes, oils, hand plaque, gypsum dust, and other stains adhering when making a prosthesis in dental technician work.

[0002]

2. Description of the Related Art Generally, in dental work, a cleaning work is required to remove wax, oil, hand dust, gypsum dust, and other stains adhering to the plaster model and the prosthesis in the process up to completion of the prosthesis.

In order to wash the surface of the plaster model before the restoration of the crown easily, quickly, and without damage, the pressure and amount are stable even though the touch is soft. Dry steam is required.

Further, in order to wash out the wax easily and promptly during the pre-treatment and the post-treatment, it is necessary to use a hot water which can be strongly washed by vigor and its heat quantity.

Furthermore, in order to wash wax, metal and the like adhering to the plaster model after completion of the prosthesis, wet steam is required.

Conventionally, there have been the following two cleaning devices for dental technique. The first cleaning device is disclosed in JP-A-11-33046.
As shown in Japanese Patent Publication, it was constructed so that two types of switching, dry steam and wet steam, were possible. Specifically, two water level sensors with different lengths are installed in a boiler with a heater wound around the outer circumference, and the water level in the boiler is changed by switching between them. The shorter water level sensor is used. As a result, the steam outlet becomes wet steam because it approaches the water surface, and by using the longer water level sensor, the steam outlet moves away from the water surface and the steam separation becomes dry steam. I was there.

The second cleaning device employs a once-through boiler system as disclosed in Japanese Patent Application Laid-Open No. 8-182696, in which a heater outside the steam generating tube is replaced by a temperature sensor outside the flow passage. It was configured so that steam and hot water could be supplied without interruption by controlling and heating, and adjusting the flow rate to be supplied by an electromagnetic pump in front of the steam generation tube.

[0008]

However, in the conventional first cleaning device, it is not possible to find a clear difference between dry steam and wet steam, and the heating is performed from the outside and the temperature is controlled by an external temperature sensor. Therefore, the responsiveness to the internal change was poor, and the pressure fluctuation was large, so that the fluctuation of the amount was large.

Further, when switching between dry steam and wet steam, the water level has to be changed, which causes a waiting time, which is a particular obstacle when a plurality of workers perform different work processes. It was

In addition, hot water is often supplied from another water heater or the like, which requires a waiting time until the temperature of the hot water rises, and the momentum is insufficient. Was often needed. Further, a sink such as a sink has been required to prevent the wax and metal from being scattered to the outside.

Next, in the second conventional cleaning device, the responsiveness until the steam or hot water was jetted was poor, and the stability of the quality could not be expected. Furthermore, the pressure and amount of steam or hot water spouting are not stable, and in addition, pulsation phenomenon is seen in the spouting state, and even after sending the spout stop signal, steam or hot water remains until the water in the steam generation pipe runs out. It continued to squirt out.

[0012] Therefore, the present invention, in the dental technical work,
It is an object of the present invention to provide a cleaning device for dental technicians, which can selectively supply and stop dry steam, wet steam, and hot water with high quality and stable pressure and flow rate with high responsiveness and excellent workability. And

[0013]

In order to achieve the above object, a cleaning apparatus for dental technics according to the present invention comprises a steam generating container having a gas phase and a liquid phase therein, and the steam generating container On the gas phase side, a dry steam discharge passage is connected and connected, and a wet steam discharge pipe having a small hole for gas phase opening to the gas phase and a small hole for liquid phase opening to the liquid phase is provided in the steam generating container. The dry steam is inserted from the dry steam discharge passage, and the wet steam is discharged from the wet steam discharge passage communicating with the wet steam discharge pipe, and the wet steam is selectively jetted from a common jet nozzle.

A steam generating container having a gas phase and a liquid phase therein is provided, and a dry steam discharge passage is connected to a dry steam discharge port opened on the gas phase side of the steam generating container. A wet steam discharge pipe having a gas phase small hole opening to the gas phase and a liquid phase small hole opening to the liquid phase is inserted into the steam generation container, and further, from the dry steam discharge port to the jet nozzle. A water supply means for supplying water is provided, dry steam is supplied from the dry steam discharge path, wet steam is supplied from the wet steam discharge path communicating with the wet steam discharge pipe, and steam is supplied from the dry steam discharge port. Hot water produced by mixing the water supplied from the water supply means is selectively jetted from the jet nozzle by sharing the jet nozzle. It is obtained by configured to.

Further, a steam generating container having a gas phase and a liquid phase inside is provided, and a dry steam discharge passage is connected to the gas phase side of the steam generating container for communication with the steam generating container for the gas phase. A wet steam discharge pipe having a small hole and a small hole for a liquid phase that opens in the liquid phase is inserted into the steam generation container, and further water for supplying water between the wet steam discharge pipe and the ejection nozzle. Providing a supply means,
Generates dry steam from the dry steam discharge passage, wet steam from the wet steam discharge passage communicating with the wet steam discharge pipe, and mixes water supplied from the water supply means with steam from the wet steam discharge pipe. The hot water thus formed is configured to be selectively ejected from the ejection nozzle by sharing the ejection nozzle.

Further, a foot switch having a pedal for dry steam, a pedal for wet steam, and a pedal for hot water is provided, and the spray of dry steam, wet steam, and hot water is switched by changing the pedal of the foot switch. I am trying. Further, a changeover switch for validating or invalidating the changeover signal of the foot switch is provided.

Further, an electric heater is arranged in the liquid phase in the steam generating container, and the electric heater is configured to directly heat the liquid phase to generate steam. Further, a pressure sensor for detecting the pressure of the gas phase in the steam generating container is provided, and heating of the electric heater is controlled based on the pressure detected by the pressure sensor. Further, a cleaning container having a water-flowing mat for removing adhered substances is provided, and an object to be cleaned is cleaned by a jet nozzle on the water-permeable mat for removing adhered substances.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings showing the embodiments.

FIG. 1 and FIG. 2 show an embodiment of a cleaning device for dental technique according to the present invention. This cleaning device responds to three kinds of fluids of dry steam, wet steam and hot steam with good response. A device body 31 that selectively ejects from the same ejection nozzle 21, a water tank 1 that supplies water for hot water generation to the device body 31, a foot switch 24 that switches ejection of three types of fluid, and an ejection nozzle. Cleaning container 29 for internally cleaning the object M to be cleaned with the fluid from 21
And are equipped with.

The object to be cleaned M is a prosthesis, a gypsum model or the like, and the object to be cleaned changes in the working process of the dental technique. Then, depending on the type of the object to be cleaned M, three kinds of fluids are used properly.

The apparatus main body 31 includes a steam generating container 6 for internally generating steam and a control unit 22 for controlling various devices.
And are equipped with.

The steam generating container 6 is a pressure resistant container having a gas phase G and a liquid phase L therein. During the cleaning in this cleaning apparatus, the gas phase G is saturated vapor and the liquid phase L
Is saturated water, and the inside of the steam generation container 6 is in a high pressure state.

A dry steam discharge port 6a is opened on the vapor phase G side of the steam generating container 6, and a dry steam discharge path 13 is connected to the dry steam discharge port 6a. From the upstream side to the dry steam discharge path 13,
16 and a dry steam solenoid valve 11 are provided.

A wet steam discharge pipe 10 is inserted in the steam generating container 6. The wet steam discharge pipe 10 is in the shape of a bottomed pipe, and has on its side surface a small hole 10a for gas phase opening to the gas phase G and a small hole 10b for liquid phase opening to the liquid phase L. . A wet steam discharge passage 14 is communicated with the opening of the wet steam discharge pipe 10, and a wet steam solenoid valve 12 is provided in the wet steam discharge passage 14.

Further, water supply means K for supplying water is provided on the downstream side of the confluence portion J of the dry steam discharge passage 13 and the wet steam discharge passage 14.

That is, a water supply passage 2 is connected to the water tank 1, and the water supply passage 2 is connected to the hot water supply passage 2a and the steam water supply passage 2b from the middle portion to the downstream side. It is branched.

The hot water water supply passage 2a is connected to a pipe between the confluence portion J and the jet nozzle 21, and the hot water water supply pump 4a is arranged in the middle of the hot water water supply passage 2a. The operation is to supply water to the jet nozzle 21 side.

The steam water supply passage 2b is communicatively connected to the liquid phase L side of the steam producing container 6, and the steam water supply pump 4b arranged in the middle of the steam water supply passage 2b operates to generate steam. It is configured to supply water to the production container 6 side. A check valve 5 is provided in the steam water supply passage 2b between the steam water supply pump 4b and the steam generation container 6, and the liquid phase L of the steam generation container 6 flows backward due to the pressure generated by the steam generation. To prevent it.

In short, the water supply means K comprises the water tank 1,
The water supply path 2 and the water supply pumps 4a and 4b are provided, and water can be supplied in a stable state. A water level sensor 3 is provided inside the water tank 1, and the water level sensor 3 determines whether or not the water level is a level at which water can be supplied.
I have told you.

Then, dry steam is discharged from the dry steam discharge path 13, wet steam is discharged from the wet steam discharge path 14, and steam supplied from the dry steam discharge path 13 is mixed with water supplied from the water supply means K. The hot water is configured to be jetted selectively from the jet nozzle 21 while sharing the jet nozzle 21.

More specifically, the control unit 22 controls the dry steam solenoid valve based on the switching signal of the foot switch 24.
11, the solenoid valve 12 for wet steam, and the water supply pump 4a for hot water are controlled.

The foot switch 24 has a dry steam pedal 24a, a wet steam pedal 24b, and a hot water pedal 24c.
By stepping on either a, 24b or 24c
A signal is sent to 22.

That is, when none of the three pedals 24a, 24b, 24c is depressed, the dry steam solenoid valve 11 and the wet steam solenoid valve 12 are closed, and the hot water feed pump. 4a is in a stopped state, and no fluid is ejected from the ejection nozzle 21.

When the dry steam pedal 24a is stepped on, only the dry steam solenoid valve 11 is opened through the control unit 22 and the high pressure in the steam generating container 6 causes the dry steam (arrow A) to be released. The ejection nozzle 21 instantly ejects it.

When the wet steam pedal 24b is depressed, only the wet steam solenoid valve 12 is opened via the control unit 22 and the high pressure in the steam generating container 6 causes the wet steam (arrow B) to be released. The ejection nozzle 21 instantly ejects it. At this time, the wet steam discharge pipe 10
At, the saturated vapor from the (upper) gas phase small hole 10a,
Saturated water is appropriately mixed through the small hole 10b for liquid phase (on the lower side) to generate wet steam. In addition, small holes for vapor phase 10
The number of a and the small holes for liquid phase 10b, the opening positions, and the like are set according to the dryness of wet steam (mixing ratio of saturated steam and saturated water).

When the hot water pedal 24c is depressed, the solenoid valve for dry steam is fed through the control unit 22.
Water pump 4a for hot water at the same time when only 11 is opened
Is operated to mix the dry steam (arrow A) from the dry steam discharge path 13 with water in the water tank 1 (arrow C) to generate hot water, and the steam generating container 6
Due to the high pressure inside, the flow rate and the temperature are stable at an appropriate temperature (80 ℃
The front and rear) hot water is instantly ejected from the ejection nozzle 21. It should be noted that the wet steam solenoid valve 12 may be opened instead of the dry steam solenoid valve 11 by devising a mixing ratio of steam and water.

In short, the foot switch 24 pedal 24
By switching a, 24b, and 24c, it is possible to switch the spray of dry steam, wet steam, and hot water. The changeover switch 23 for validating or invalidating the changeover signal of the foot switch 24 is electrically connected to the control unit 22 and is operated so that it can be operated from the outside.
Is attached to.

Therefore, according to the present cleaning apparatus constructed as described above, the foot switch 24 can be used to selectively use the three kinds of fluids.
It is possible to eject any of the fluids from the same ejection nozzle 21 through the same ejection hose 20 and improve the work efficiency. That is, since the ejection nozzle 21 is common and the foot switch 24 can be operated by the foot, both hands can be used only for the cleaning work of the object M to be cleaned, and the work can be speeded up and an operation error can be prevented. it can. Furthermore, the jet nozzle 21 is
It is fixedly attached to 31 via a support rod 32 so as to be swingable and movable in parallel, thereby further facilitating the cleaning work.

Although not shown, when hot water is produced by mixing the water supplied from the water supply means K with the steam from the dry steam discharge port 6a, the dry steam discharge on the upstream side of the merging portion J is performed. The hot water supply passage 2a may be communicated with the passage 13, that is, water may be supplied between the dry steam discharge port 6a and the jet nozzle 21.

Although not shown, when hot water is produced by mixing the water supplied from the water supply means K with the steam from the wet steam discharge pipe 10, the wet steam discharge on the upstream side of the merging portion J is performed. The water supply passage 2a for hot water may be communicated with the passage 14, in short,
Water may be supplied between the wet steam discharge pipe 10 and the ejection nozzle 21.

Here, as a method of producing saturated vapor, an electric heater 8 is provided in the liquid phase L in the steam producing container 6,
The electric heater 8 directly heats the liquid phase L to generate steam. At this time, the liquid phase L is water because it is in the preparation stage of the cleaning work. Therefore, since the water is heated directly from the inside of the steam generation container 6, it is obviously more efficient than the conventional method of heating from the outside of the container or heating the water inside by heat transfer from the outer wall of the container. (That is, the thermal efficiency is 100%), which means no waste.

The water level inside the steam generating container 6 is controlled by the water level sensor 9 via the control unit 22. That is, when the water surface is below the lower end of the water level sensor 9 and the water surface of the water tank 1 is above the water level sensor 3 of the water tank 1, the steam water supply pump 4b is operated to cause the inside of the steam generation container 6 to operate. Is supplied with water (arrow D).

When the water level in the steam generation container 6 exceeds the lower end of the water level sensor 9, the electric heater 8 is energized,
Start heating. Further, after the water level exceeds the lower end of the water level sensor 9 and a predetermined time has elapsed (that is, by the timer control), the operation of the steam water supply pump 4b is stopped.
In this way, chattering of the pump operation can be prevented by the water level control method using the single water level sensor 9 and the timer control. After the water level falls below the lower end of the water level sensor 9 and a predetermined time elapses (that is, by timer control), the electric heater 8 is stopped in order to prevent the heater from being heated.

The steam generated as described above is saturated steam, and the pressure changes due to heating. Along with that, the temperature of the steam and the flow rate ejected to the outside also change.
Therefore, a pressure sensor 15 that directly detects the pressure of the gas phase G in the steam generation container 6 is provided, and heating of the electric heater 8 is controlled via the control unit 22 based on the pressure detected by the pressure sensor 15. I am trying to do it. In this case, the gas phase G
Becomes steam (saturated steam). With this control method, steam with stable pressure, temperature, and flow rate can be generated, and the steam can be ejected from the ejection nozzle 21 with good responsiveness. On the other hand, with the solenoid valves 11 and 12,
Spouting of steam can be stopped with good responsiveness.

Before the steam is generated, either one of the solenoid valves 11 and 12 is opened also for bleeding air in the steam generating container 6. And the steam spouts nozzle 21
At a point when the temperature of steam slightly starts to be detected, the usable detection sensor 28 (shown in FIG. 2) detects the temperature of the steam, and the control unit 22
After closing the solenoid valves 11 and 12 for several tens of seconds,
A ready lamp 27 informs the operator that it is ready for use. A buzzer or the like may be used instead of the usable lamp 27. According to this method, the rising time can be shortened, and further, the steam generating container 6 and the conduit from the steam generating container 6 to the ejection nozzle 21 can be warmed before use, and the responsiveness is further improved.

On the liquid phase L side of the steam generating container 6,
A drainage channel 18 having a drainage valve 17 is connected in communication, and by opening the drainage valve 17, the liquid phase L of the steam generation container 6 can be drained (arrow E), and the inside of the steam generation container 6 can be cleaned. Can perform inspection, repair, etc.

Then, the object M to be cleaned is cleaned by the steam or hot water generated as described above. That is, a cleaning container 29 having a water-permeable mat 30 for removing foreign matters is provided, and as shown in FIG.
The object M to be cleaned is cleaned by the jet nozzle 21.

The water-permeable mat 30 is an open-cell foam made of silicone rubber or silicone resin, which is excellent in heat resistance and water infiltration, and is a lath plate 34 attached inside the cleaning container 29.
It is placed on top. This water-passing mat 30 allows only water to pass downward during cleaning, and can take up and filter the deposits 33 (wax, metal, gypsum dust, etc.) 33 on the cleaning target M. Therefore, it is possible to separate the water content and the adhering matter 33, and it is easy to clean up after the work.

Further, since the cleaning is carried out in the cleaning container 29, the scattering of steam, hot water, and the adhered matter 33 to the outside is prevented, and the surroundings are prevented. Therefore, the cleaning device
It can be installed anywhere, unlike the conventional case where it had to be installed near the sink of a sink.

In summary, according to the present cleaning apparatus configured as described above, since dry steam that is soft-touch and stable in pressure and flow rate can be supplied, the surface of the plaster model before the crown restoration wax can be supplied. The removal work of the gypsum residue can be performed easily and quickly, and without causing damage such as surface roughness or chipping. Furthermore, since there is momentum and a linear hot water can be jetted, the wax can be washed off accurately and promptly during pretreatment and posttreatment.

In the prior art, since the distance to the object to be cleaned M could not be sufficiently secured during the cleaning operation, the object to be cleaned M (porcelain) was often damaged by static electricity. Steam and hot water have momentum,
Since a sufficient distance from the object to be cleaned M can be secured, no static electricity is generated and no damage occurs.

The present invention is not limited to the above-described embodiments, and, for example, the design of hot water generation can be modified within the scope of the present invention.

[0053]

Since the present invention is configured as described above, it has the following effects.

Dry steam (according to claim 1),
The two types of wet steam fluid can be easily used in the same device.Furthermore, a good quality fluid with stable pressure, temperature, and flow rate is ejected from the common ejection nozzle 21, so workability is improved. It is possible to reduce the number of parts and cost. Moreover, it is possible to instantaneously switch and eject the two kinds of fluids, and it becomes excellent in responsiveness, which becomes remarkable especially when a plurality of workers perform different different process works.

Dry steam (according to claim 2),
We can easily use the three types of fluids, wet steam and hot water, with the same device.
In addition, a common jet nozzle that delivers a high-quality fluid with a stable flow rate
Since it spouts from 21, it is possible to improve workability, reduce the number of parts, and reduce costs. Moreover, the three types of fluids can be switched and ejected instantly, and the responsiveness is excellent, which is particularly noticeable when a plurality of workers perform different different process works.

Dry steam (according to claim 3),
We can easily use the three types of fluids, wet steam and hot water, with the same device.
In addition, a common jet nozzle that delivers a high-quality fluid with a stable flow rate
Since it spouts from 21, it is possible to improve workability, reduce the number of parts, and reduce costs. Moreover, the three types of fluids can be switched and ejected instantly, and the responsiveness is excellent, which is particularly noticeable when a plurality of workers perform different different process works.

(According to claim 4), instantaneously with the foot,
Since the ejection of three kinds of fluids can be switched, both hands can be used only for the cleaning work, and the cleaning work can be performed quickly and accurately. (According to claim 5) When the foot switch 24 is not used, the changeover switch 23 invalidates the changeover signal of the footswitch 24, ensuring safety even if the footswitch 24 is inadvertently stepped on. can do.

Since the electric heater 8 directly heats the water (according to claim 6), steam can be generated quickly and efficiently. Since steam is generated by pressure control (according to claim 7), it is possible to supply good quality steam with stable pressure, temperature and flow rate with good responsiveness.

In order to clean the inside of the cleaning container 29 (according to claim 8), the spray fluid of the spray nozzle 21 and the deposit 33 such as wax or metal of the object M to be cleaned are scattered to the outside. In addition, it is not necessary to choose the installation location of the cleaning device. Further, the water-permeable mat 30 can separate the water content and the adhering matter 33, and the handling after the work becomes very simple.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is an overall configuration explanatory view that also serves to explain the operation of the present invention.

FIG. 3 is an operation explanatory view showing a filtration state of the water-permeable mat.

[Explanation of symbols]

6 steam generation container 6a Dry steam outlet 8 electric heaters 10 Wet steam discharge pipe 10a Gas phase small hole 10b Small hole for liquid phase 13 Dry steam discharge channel 14 Wet steam discharge channel 15 Pressure sensor 21 jet nozzle 23 Changeover switch 24 foot switch 24a Dry Steam Pedal 24b Wet Steam Pedal 24c Hot Water Pedal 29 Cleaning container 30 Water-permeable mat for removing deposits G gas phase L liquid phase K water supply means M to be cleaned

Claims (8)

[Claims] 1. A steam generation container 6 having a gas phase G and a liquid phase L therein, and a dry steam discharge passage 13 is connected to the gas phase G side of the steam generation container 6 for communication.
A wet steam discharge pipe 10 having a small hole 10a for a gas phase opening to a gas phase G and a small hole 10b for a liquid phase opening to a liquid phase L is inserted into the steam generating container 6 and is discharged from the dry steam discharge path 13 A cleaning device for a dental technician characterized in that dry steam is configured to be selectively jetted from a common jet nozzle 21 from a wet steam discharge passage 14 communicating with the wet steam discharge pipe 10. 2. A dry steam discharge path (13) is provided at a dry steam discharge port (6a) opened on the gas phase (G) side of the steam generation container (6), comprising a steam generation container (6) having a gas phase (G) and a liquid phase (L) therein. Is connected to each other, and a wet steam discharge pipe 10 having a gas phase small hole 10a opening to the gas phase G and a liquid phase small hole 10b opening to the liquid phase L is inserted into the steam generating container 6, Further, a water supply means K for supplying water is provided between the dry steam discharge port 6a and the jet nozzle 21, and the dry steam is connected from the dry steam discharge path 13 to the wet steam discharge pipe 10. Wet steam from the steam discharge channel 14,
Hot water produced by mixing the water supplied from the water supply means K with the steam from the dry steam discharge port 6a is selectively used to jet the hot water from the jet nozzle 21 by sharing the jet nozzle 21. A cleaning device for a dental technician, characterized in that 3. A steam generating container 6 having a vapor phase G and a liquid phase L therein is provided, and a dry steam discharge passage 13 is communicatively connected to the vapor phase G side of the steam producing container 6.
A wet steam discharge pipe 10 having a small hole 10a for gas phase opening to the gas phase G and a small hole 10b for liquid phase opening to the liquid phase L is inserted into the steam generation container 6, and the wet steam discharge pipe is further provided. Water supply means K for supplying water is provided between 10 and the jet nozzle 21, and dry steam is supplied from the dry steam discharge path 13 and wet steam is discharged from the wet steam discharge path 14 communicating with the wet steam discharge pipe 10. The hot water produced by mixing the water supplied from the water supply means K with the steam from the wet steam discharge pipe 10 is selectively jetted from the jet nozzle 21 by sharing the jet nozzle 21. A cleaning device for a dental technician characterized by being configured as follows. 4. A foot switch 24 having a dry steam pedal 24a, a wet steam pedal 24b, and a hot water pedal 24c. The foot switch 24 is stepped on the pedals 24a, 24b, 24c to dry steam. The cleaning apparatus for dental technician according to claim 2 or 3, wherein ejection of wet steam, wet steam and hot water is switched. 5. The dental technician cleaning apparatus according to claim 4, further comprising a changeover switch 23 for validating or invalidating a changeover signal of the footswitch 24. 6. The electric heater 8 is arranged in the liquid phase L in the steam generating container 6, and the electric heater 8 directly heats the liquid phase L to generate steam.
The cleaning device for dental technique according to 2, 3, 4 or 5. 7. A pressure sensor 15 for detecting the pressure of the gas phase G in the steam generating vessel 6 is provided, and heating of the electric heater 8 is controlled based on the pressure detected by the pressure sensor 15. Item 6. A cleaning device for dental technique according to Item 6. 8. A water passage mat for removing attached matter, comprising a cleaning container 29 having a water passage mat for attached matter removal 30 therein.
The cleaning device for a dental technician according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the object M to be cleaned is cleaned on the nozzle 30 by the jet nozzle 21.