JP5517018B2 - Pressurized fluid discharge device of dental care unit - Google Patents

Description

  The present invention relates to a fluid discharge device for discharging residual water in a water circuit provided in a dental care unit.

  Conventionally, pressure water adjusted to a constant normal pressure is supplied to instruments provided in a dental care unit. This pressure water remains in the water circuit even after the end of medical care, so there is a problem that bacteria will grow and become unsanitary before the start of medical care the next day. It was necessary to clean or flush the residual water from all the dental treatment instruments including it. In particular, the day after the closed day had to be flushed carefully.

  In addition, conventional flushing, for example, is a method of discharging water at a constant pressure from all circuits such as instrument, cup water supply, and bowl washing to discharge residual water. Since the flow rate is insufficient, the discharge pressure decreases, and there is a problem that sufficient discharge cannot be performed. In addition, there is a problem that it takes a lot of time to discharge from all the circuits in the method of discharging from each circuit in order so that the flow rate is not insufficient. Further, even if flushing is performed, the portion where the tip of the pipe line does not open does not necessarily drain out. Another method is to hold the instrument in the unit body or a dedicated holder and drain the residual water using the suction force of the vacuum / salping instrument. There is a problem that it takes time. However, as conventional techniques related to this residual water discharge, for example, the following patent documents 1 to 5 are known.

  In the invention of Patent Document 1, an instrument locking portion is provided in a dental spiton, and the instrument is mounted at the time of cleaning the water circuit in the instrument or at the time of smoothing rotation after oil turbine lubrication. It locks to the locking part and discharges water from the instrument into the spit and drains it.

  In the invention of Patent Document 2, the water circuit switching control unit and the operation switch are divided into a water circuit having a larger pipe diameter and a water circuit having a smaller pipe radius, and switching between sterilizing water, washing water, and dry air corresponding to the classification. This is performed sequentially in time series to improve the efficiency of sterilization, cleaning and drying operations of each water circuit, and to prevent corrosion and deterioration due to oxidation of the water circuit.

  The invention of Patent Document 3 is provided with a filtration filter and a check valve on the outlet side of the filtration filter on the pressurized water supply line from the relay fitting for connecting the instrument hose for the handpiece to the handpiece. A branch circuit provided in the air supply line is provided with an air circuit that communicates with the pressurized water supply line between the handpiece and the check valve, and bacteria in the pressurized water supply line from the water pressure source to the filtration filter are used as the filtration filter. The water can be discharged through the water injection nozzle at the tip of the handpiece while being collected, and the water remaining in the water conduit from the check valve to the tip of the handpiece can be removed by compressed air sent from the air pressure source. It is possible.

  The invention of Patent Document 4 includes a compressed air supply line and a pressurized water supply line for driving a handpiece, a compressed air supply valve group connected to the compressed air supply line and the handpiece, and a pressurized water supply line and a handpiece. And a valve block that constitutes a pressurized water supply valve group connected to the water circuit, and a water circuit cleaning device that performs handpiece speed control and water injection control with a foot controller.

  The invention of patent document 5 is for water supply in which all the water circuit opening / closing valve inlets of various devices for water supply and water supply of dental chair units and various devices for water supply such as handpieces with water supply are connected in series. To reduce the processing time by filling the main line with clean water at all times, and draining the residual water individually with various devices or instruments branched to the main circuit. It is.

JP-A-8-33655 JP 2000-245753 A Japanese Patent Laid-Open No. 2002-253583 JP 2002-191620 A JP 2004-180782 A

However, none of the conventional Patent Documents 1 to 5 can easily discharge the residual water in the water circuit in the dental care unit in a short time.
Therefore, the invention of the present application is simple and easy in the pressurized fluid discharge device of the dental care unit by temporarily supplying high-pressure water having a pressure higher than normal pressure into the water circuit and discharging the residual water together with the high-pressure water in a short time. It is an object of the present invention to provide a pressurized fluid discharge device for a dental care unit that can discharge residual water in a short time.

  The present invention provides a water circuit for reducing pressure water supplied from a water pressure source to normal pressure for dental care and supplying the dental care unit with high-pressure water higher than the normal pressure to the water circuit temporarily. A high-pressure circuit for discharging residual water in the water circuit together with the high-pressure water is provided in the water circuit. As the pressurizing means by this high-pressure circuit, the pressurized water in the water circuit is pressurized by a pressurizing pump, or the pressure air supplied to the dental practice is used to pressurize the piston and cylinder, or the water pressure source The high pressure water obtained by reducing the pressure water from the pressure to a pressure higher than the normal pressure in the water circuit is temporarily supplied to the water circuit via the electromagnetic valve. Note that the pressurization timing of the high-pressure circuit depends on the operation of the foot controller.

  The pressurized fluid discharge device of the dental care unit of the present invention discharges residual water in the water circuit in a short time with the high-pressure water by temporarily supplying the water circuit with high-pressure water higher than the normal pressure that is always used. There is an advantage that you can. In addition, the pressurized fluid discharge device introduces pressure water from the water pressure source directly into the pressurization circuit and pressurizes it with a pump, or pressurizes cylinders and pistons using the pressure air in the air circuit. Thus, high-pressure water can be obtained by slightly pressurizing, so that the structure is simple and inexpensive. Moreover, since the timing of pressurization is performed by operating the foot controller, residual water can be discharged easily and in a short time.

  As described above, the pressurized fluid discharge device of the present invention can discharge the residual water in a short time before the start of medical care in the high-pressure circuit, so that the medical care can be started without any trouble.

  A high-pressure circuit that temporarily supplies high-pressure water higher than the pressure used at all times is provided in the water circuit for the purpose of how to easily and quickly discharge residual water from the water circuit of the dental care unit. Realized.

FIG. 1 is a circuit diagram of a pressurizing system using a pressurizing pump, showing a first embodiment of the pressurizing fluid discharge apparatus of the present invention.
As shown in FIG. 1, in a water circuit 1 of a pressurized fluid discharge device for a dental unit according to the present invention, pressure water from a water pressure source 2 is reduced to a normal pressure for dental practice by a pressure reducing valve 3, and vice versa. It is configured to be supplied to the air turbine handpiece 6, the micromotor handpiece 7, the syringe 8, the water supply 9, the pot wash 10 and the like through the stop valve 4 and each control valve 5.

  As shown in FIG. 1, the pressurization method of the present embodiment includes a pressurization pump 12 that pressurizes the pressure water supplied from the water pressure source 2 to a pressure higher than a normal pressure for dental practice, and pressurized high-pressure water. A high pressure circuit 11 including an electromagnetic valve 13 that temporarily supplies the water circuit 1 is provided in the water circuit 1. In addition, the code | symbol 10a in a figure shows a spitone.

  When discharging the residual water in the water circuit 1, the high-pressure circuit 11 having this configuration operates by operating a foot controller (not shown) so that the pressure water supplied from the water pressure source 2 is higher than the normal pressure by the pressure pump 12. By opening the solenoid valve 13 and opening the flow regulating valve 14 by hand switch operation or mechanical operation, and temporarily supplying pressurized high-pressure water to the water circuit 1 The residual water is discharged together with the high-pressure water easily and in a short time from the outlets of the air turbine handpiece 6, the micromotor handpiece 7, the syringe 8, the water supply 9, and the bowl wash 10.

FIG. 2 is a circuit diagram of a pressurization system showing a second embodiment of the pressurization type fluid discharge apparatus of the present invention and showing another example using a pressurization pump.
As shown in FIG. 2, the pressurization method of this embodiment includes a pressurization pump 12, an electromagnetic valve 13 that temporarily supplies high-pressure water to the water circuit 1, and an electromagnetic that temporarily supplies high-pressure water to the syringe 8. A high pressure circuit 15 including a valve 16 and a flow rate adjusting valve 17 is provided in the water circuit 1. On the other hand, a check valve 18 is provided in front of the flow rate adjustment valve 14 on the water circuit 1 side so that the high pressure water supplied from the electromagnetic valve 16 of the high pressure circuit 15 does not flow into each control valve 5 side. Yes.

  The high pressure circuit 15 configured as described above is configured so that when the residual water in the water circuit 1 is discharged, the pressure water supplied from the water pressure source 2 by operating a foot controller (not shown) is higher than the normal pressure by the pressure pump 12. The pressurized high pressure water is temporarily supplied to the water circuit 1 by opening the solenoid valve 13 and opening the flow rate adjusting valve 14 by a hand switch operation or mechanical operation. The On the other hand, by temporarily supplying pressurized high-pressure water to the syringe 8 via the electromagnetic valve 16 and the flow rate adjustment valve 17, the air turbine handpiece 6, the micromotor handpiece 7, the syringe 8, the water supply 9, Residual water is discharged together with the high-pressure water from each outlet of the pot wash 10 in a simple and short time.

  Further, the pressurization method of this embodiment is such that high pressure water is supplied to the entire water circuit 1 via one solenoid valve 13 in the first embodiment, and the high pressure water is supplied to the air turbine handpiece 6, the micro motor handpiece 7, Compared to discharging residual water from all outlets such as syringe 8, water supply 9 and pot wash 10, it is possible to supply high pressure water separately and selectively to the syringe in a separate circuit. ing.

3 and 4 show a third embodiment of the pressurized fluid discharging apparatus of the present invention, FIG. 3 is a circuit diagram showing a pressurizing system using a piston and a cylinder, and FIG. 4 is a diagram showing a modification of FIG. is there.
As shown in FIG. 3, the pressurization method of this embodiment uses a pressurized air from an air source 19 to operate a piston and a cylinder 20, and a high pressure circuit 21 that pressurizes the pressure water supplied from the water circuit 1. The circuit 1 is provided. Note that the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted.

  The high-pressure circuit 21 of the present embodiment includes a solenoid valve 22 that introduces pressure air from the air source 19, a piston and cylinder 20 that operates with the pressure air, and a bypass that supplies pressure water from the water circuit 1 to the piston and cylinder 20 A check valve 32 provided in the circuit 31 and the bypass circuit 31, and an electromagnetic valve 23 for temporarily supplying high-pressure water pressurized by the piston and the cylinder 20 to the water circuit 1, By operation, high-pressure water obtained by pressurizing the pressure water in the water circuit 1 to a pressure higher than the normal pressure is temporarily supplied to the water circuit 1. As a modification of the present embodiment, as shown in FIG. 4, a check valve 32 and a flow rate adjustment valve 33 may be provided in parallel in the bypass circuit 31 of the high pressure circuit 21 to provide a return resistance.

  When discharging the residual water in the water circuit 1, the high-pressure circuit 21 having this configuration is operated normally by operating a foot controller (not shown) to supply the piston and the cylinder 20 to the piston and the cylinder 20 through the check valve 32. The pressurized water is pressurized by the piston and cylinder 20 that are operated by the high-pressure air supplied from the air source 19 through the solenoid valve 22, and becomes high-pressure water that is higher than the normal pressure to open the solenoid valve 23. The high-pressure water pressurized by opening the hand switch of the flow rate adjusting valve 14 or opening by mechanical operation is temporarily supplied to the water circuit 1, and the air turbine handpiece 6, micromotor handpiece 7, syringe 8, water supply Residual water is discharged together with high-pressure water easily and in a short time from the outlets of the bowls 9 and 10 respectively. Reference numeral 27 in the figure denotes a pressure reducing valve for reducing the pressure of the air source to a normal pressure used for dental practice.

5 and 6 show a fourth embodiment of the pressurized fluid discharge device of the present invention, FIG. 5 is a circuit diagram showing another example of a pressurizing system using a piston and a cylinder, and FIG. 6 is a modification of FIG. It is.
As shown in FIG. 5, the pressurization method of the present embodiment is similar to the third embodiment in that the electromagnetic valve 22 for introducing the pressure air of the air source 19 to the water circuit 1 having the water pressure source 2 and the air source 19. A piston and a cylinder 20 that are operated by pressure air, a bypass circuit 31 that supplies pressure water from the water circuit 1 to the piston and the cylinder 20, a check valve 32 provided in the bypass circuit 31, and a piston and a cylinder 20 The water circuit 1 is provided with a high-pressure circuit 26 comprising an electromagnetic valve 23 for supplying pressurized high-pressure water to the water circuit 1, an electromagnetic valve 24 for supplying high-pressure water to the syringe 8, and a flow rate adjusting valve 34. Yes, the same components as those in the third embodiment are denoted by the same reference numerals, and redundant description is omitted. As a modification of the present embodiment, as shown in FIG. 6, a flow resistance adjusting valve 33 may be provided in parallel with the check valve 32 in the bypass circuit 31 to provide a return resistance.

  The high-pressure circuit 26 having this configuration is operated by operating a foot controller (not shown) when discharging the residual water in the water circuit 1 so that the normal pressure supplied from the water circuit 1 to the piston and the cylinder 20 via the check valve 32 is normal. The pressurized water is pressurized by the piston and cylinder 20 that operate with the high-pressure air supplied from the air source 19 through the solenoid valve 22, and becomes high-pressure water that is higher than the normal pressure. High-pressure water pressurized by opening a hand switch of the flow rate adjusting valve 14 or by mechanical operation is temporarily supplied to the water circuit 1. On the other hand, by temporarily supplying pressurized high-pressure water to the syringe 8 via the solenoid valve 24 and the flow rate adjustment valve 34, the air turbine handpiece 6, the micromotor handpiece 7, the syringe 8, the water supply 9, Residual water is discharged together with the high-pressure water from each outlet of the pot wash 10 in a simple and short time.

FIG. 7 is a circuit diagram showing a pressurization method using a pressure reducing valve having a pressure setting different from the normal pressure, showing a fifth embodiment of the pressurization type fluid discharge apparatus of the present invention.
As shown in FIG. 7, the pressurization method of this embodiment includes a pressure reducing valve 29 set to a pressure higher than the normal pressure, and an electromagnetic valve 28 that temporarily supplies high-pressure water that has passed through the pressure reducing valve 29 to the water circuit 1. A high-pressure circuit 30 is provided in the water circuit 1. Further, it is possible to discharge residual water by directly supplying the pressure water of the water pressure source 2 to the water circuit 1 without providing the pressure reducing valve 29. In addition, the same code | symbol is attached | subjected to the same component as the said Example 1, and the overlapping description is abbreviate | omitted.

  The high-pressure circuit 30 having this configuration is operated by operating a foot controller (not shown) when discharging the residual water in the water circuit 1, so that the pressure water supplied from the water pressure source 2 is reduced to a pressure higher than the normal pressure. It becomes high-pressure water through the valve 29, and this high-pressure water is temporarily supplied to the water circuit 1 by opening the electromagnetic valve 28, whereby the air turbine handpiece 6, the micromotor handpiece 7, the syringe 8, the water supply 9, the bowl Residual water is discharged together with high-pressure water easily and quickly from each outlet of the wash 10. The high-pressure circuit 30 shown in the present embodiment is configured in parallel with a high-pressure circuit (not shown) having pressure-reducing valves with different pressure settings, and appropriately supplies various high-pressure water to the water circuit 1 by appropriately selecting the pressure. You can also.

  In the first to fifth embodiments, the timing of pressurization by the pressurizing means can be appropriately performed by operating the foot controller.

It is a circuit diagram of a pressurization method using a pressurization pump. Example 1 It is a circuit diagram which shows the other example of the pressurization system using a pressurization pump. (Example 2) It is a circuit diagram of a pressurization system using a piston and a cylinder. (Example 3) FIG. 4 is a diagram showing a modification of FIG. (Example 3) It is a circuit diagram which shows the other example of the pressurization system using a piston and a cylinder. Example 4 6 is a modification of FIG. Example 4 It is a circuit diagram which shows the pressurization system using the pressure-reduction valve from which a pressure setting differs from normal pressure. (Example 5)

Explanation of symbols

1 Water circuit
2 Water pressure source
3 Pressure reducing valve
4 Check valve
5 Each control valve
6 Air turbine handpiece
7 Micromotor handpiece
8 syringe
9 Water supply
10 Bowl washing
11, 15, 21, 26, 30 High voltage circuit
12 Pressurizing pump
13, 16, 22, 23, 24, 28 Solenoid valve
14, 17, 33, 34 Flow control valve
18, 32 Check valve
19 Air source
20 Piston and cylinder
27, 29 Pressure reducing valve
31 Bypass circuit

Claims (6)

The pressure water from the water pressure source is reduced to the normal pressure for dental treatment by the pressure reducing valve, and is a water circuit that supplies the instrument, water supply, etc. via the check valve and each control valve ,
Dental constructed by kicking setting the high voltage circuit to discharge with high-pressure water residual water in the water circuit by supplying to the each control valve temporarily the water circuit high pressure water from the normal pressure through the In the pressurized fluid discharge device of the unit,
The high-pressure circuit includes a pressurizing pump that pressurizes pressure water introduced from the water pressure source, and high-pressure water pressurized by the pressurizing pump provided on the output side of the pressurizing pump. A pressurized fluid discharge device for a dental care unit, characterized by comprising a solenoid valve for temporary supply.   The high-pressure circuit includes a pressurizing pump that pressurizes pressure water introduced from the water pressure source, and high-pressure water pressurized by the pressurizing pump provided on the output side of the pressurizing pump. 2. The pressurized fluid discharge device for a dental practice unit according to claim 1, comprising a solenoid valve for temporarily supplying, a solenoid valve for temporarily supplying the high-pressure water to a syringe, and a flow rate adjusting valve. The pressure water from the water pressure source is reduced to the normal pressure for dental treatment by the pressure reducing valve, and is a water circuit that supplies the instrument, water supply, etc. via the check valve and each control valve ,
Dental constructed by kicking setting the high voltage circuit to discharge with high-pressure water residual water in the water circuit by supplying to the each control valve temporarily the water circuit high pressure water from the normal pressure through the In the pressurized fluid discharge device of the unit,
The high-pressure circuit is provided on a solenoid valve that introduces pressurized air from an air source to the high-pressure circuit, a piston and a cylinder that pressurize the pressure water in the water circuit with the pressurized air, and an output side of the piston and the cylinder. And a check valve that bypasses the solenoid valve and temporarily supplies high-pressure water pressurized by the piston and cylinder to the water circuit. Pressure type fluid discharge device.   The high-pressure circuit is provided on a solenoid valve that introduces pressurized air from an air source to the high-pressure circuit, a piston and a cylinder that pressurize the pressure water in the water circuit with the pressurized air, and an output side of the piston and the cylinder. An electromagnetic valve for temporarily supplying high-pressure water pressurized by the piston and cylinder to the water circuit, a check valve for bypassing the electromagnetic valve, and an electromagnetic valve for temporarily supplying the high-pressure water to the syringe 4. The pressurized fluid discharge device for a dental practice unit according to claim 3, wherein the pressurized fluid discharge device is constituted by a flow rate adjusting valve. The pressure water from the water pressure source is reduced to the normal pressure for dental treatment by the pressure reducing valve, and is a water circuit that supplies the instrument, water supply, etc. via the check valve and each control valve ,
Dental constructed by kicking setting the high voltage circuit to discharge with high-pressure water residual water in the water circuit by supplying to the each control valve temporarily the water circuit high pressure water from the normal pressure through the In the pressurized fluid discharge device of the unit,
The high-pressure circuit includes a pressure reducing valve for reducing pressure water introduced from a water pressure source to high pressure water higher than normal pressure in the water circuit, and an electromagnetic valve for temporarily supplying the reduced pressure water to the water circuit. The pressurized fluid discharge device for a dental practice unit according to claim 1.   The pressurization timing of the high pressure circuit is operated by a foot controller, and the pressurization type fluid discharge device of the dental care unit according to any one of claims 1 to 5.

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