JP2009219723A - Suction type fluid discharge device of dental treatment unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To discharge residual water within a water circuit in a dental treatment unit in a short time. <P>SOLUTION: A suction circuit 15 for discharging the residual water is provided at the water circuit 1 of the dental treatment unit. The suction circuit 15 is formed of the solenoid valve 16 connected to the water circuit 1, a suction unit 18 for sucking the residual water in the water circuit 1 along with air, and an air-liquid separator 17 for separating the sucked air and the residual water. When the residual water is discharged, the on-off valve 3 on the side of a water pressure source 2 for supplying water to the water circuit 1 of the dental treatment unit is closed while all of the control valves 5, 7, 11, and 16 provided within the water circuit 1 are opened simultaneously with the operation of the suction circuit 15 to suck air from the respective terminals of the water circuit 1 and a check valve 14 while sucking the residual water in the water circuit 1 to introduce it into an air-liquid separator 17 to separate air and water by the air-liquid separator 17. The separated water is discharged through the water discharge pipe 21 of a piston 20 and the separated air is discharged to the atmosphere. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fluid discharge device for a dental care unit that discharges water remaining in a water circuit of the 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 dental treatment instruments. In particular, the day after the closed day had to be flushed carefully.

  In addition, in the conventional flushing, for example, in order to discharge residual water, a method of discharging water at a constant pressure all at once from all circuits such as instrument, cup water supply, bowl washing, etc. has been taken. 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 does not become 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 spittoon, and the instrument is engaged at the time of water circuit cleaning in the instrument or at the time of smoothing rotation after oil turbine lubrication. It is locked to the stop and discharges water from the outlet of the instrument and discharges the water to the spit.

  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. The steps are performed sequentially in time series to improve the efficiency of sterilization, washing and drying of each water circuit, and prevent corrosion and deterioration due to oxidation of the water circuit.

  The invention of Patent Document 3 is provided with a filtration filter in a suction water supply line from a relay fitting for connecting an instrument hose for a handpiece to the handpiece, and a check valve on the outlet side of the filtration filter, An air circuit that connects the branch circuit provided in the compressed air supply line to the suction water supply line between the handpiece and the check valve is provided in the suction water supply line from the water pressure source to the filtration filter. The collected bacteria are collected by a filtration filter and discharged through a water jet nozzle at the tip of the handpiece, and the water remaining in the water conduit from the check valve to the tip of the handpiece is removed by compressed air sent from the air pressure source That made it possible.

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

  The invention of Patent Document 5 is for water supply in which all the water circuit opening and closing valve inlets of various devices for water supply and water supply of dental air units and various water supply devices such as handpieces with water supply are connected in series. The main line is always filled with clean water, and the residual water is drained individually with various devices or instruments branching to the main circuit to shorten the processing time. Is what you do.

However, each of the conventional Patent Documents 1 to 5 is different from a configuration in which a suction circuit is provided in the water circuit of the present invention, and residual water in the water circuit is sucked together with air and discharged in a short time. Moreover, the structure which provided the suction circuit in the water circuit of this invention and discharged | emitted residual water in a short time has not been developed until now.
JP-A-8-33655 JP 2000-245753 A Japanese Patent Laid-Open No. 2002-253583 JP 2002-191620 A JP 2004-180782 A

  The problem to be solved is how to reliably and quickly discharge residual water in the water circuit in the dental care unit by simple means.

  The suction type fluid discharge device of the dental care unit of the present invention is characterized in that a suction circuit is connected to the water circuit of the dental care unit, and the residual water in the water circuit is sucked and discharged together with air. The suction circuit includes an electromagnetic valve that controls suction, suction means for sucking residual water in the water circuit together with air, and a gas-liquid separator that separates the sucked air and residual water. On the other hand, in the water circuit of the dental care unit, a check valve for sucking air is provided between the open / close valve on the water pressure source side and the pressure reducing valve, and if a solenoid valve exists in the water pressure circuit, the valve is straddled. A bypass circuit is provided, and a check valve is provided in the circuit to enable suction. Further, the discharge pipe of the gas-liquid separator is connected to the water discharge pipe of Spiton, the separated water is discharged through the water discharge pipe of Spiton, and the separated air is discharged into the atmosphere. The gas-liquid separator may be provided in the dental care unit or outside the dental care unit.

  The suction type fluid discharge device of the dental care unit of the present invention closes the open / close valve of the water pressure source when discharging residual water in the water circuit, and all of the water circuits provided in the water circuit in synchronization with the operation of the suction circuit. By opening the control valve, residual water in the water circuit can be sucked and discharged together with air. Thus, unlike the conventional method of washing a water circuit with normal-pressure running water, the process is simple, and residual water can be completely discharged in a short time.

  The objective of how to completely and quickly discharge residual water from the water circuit of the dental care unit was realized by providing a suction circuit in the water circuit and sucking and discharging the residual water together with air.

FIG. 1 is a circuit diagram in which a suction circuit is provided for a water circuit of a dental care unit showing Embodiment 1 of the present invention.
As shown in FIG. 1, the water circuit 1 of the dental practice unit according to the present invention reduces the on-off valve 3 on the water pressure source 2 side and the pressure water supplied through the on-off valve 3 to a normal pressure required for dental practice. Pressure reducing valve 4, each control valve 5 for controlling the pressure water of reduced normal pressure and supplying it to instruments 24 such as air turbine handpiece 22 and micromotor handpiece 23, and pressure reduced to normal pressure An electromagnetic valve 7 for supplying water to the water supply 6, a bypass circuit 8 across the electromagnetic valve 7, a check valve 9 provided in the bypass circuit 8, and an electromagnetic valve 11 for supplying pressure water to the pot wash 10 The bypass circuit 12 straddles the electromagnetic valve 11 and a check valve 13 provided in the bypass circuit 12. In addition, a check valve 14 is provided between the on-off valve 3 and the pressure reducing valve 4 on the water pressure source 2 side to allow air to be sucked.

  With respect to this water circuit 1, the present invention is provided with a suction circuit 15 for sucking and discharging residual water in the water circuit 1. The suction circuit 15 of the present embodiment is provided with a solenoid valve 16 that controls suction and a gas-liquid divider 17 that separates the sucked air and residual water in the dental unit, and suction means 18, for example, a suction blower, It is installed outside the dental care unit, for example, in a machine room of a doctor's office, and operates as a suction means for a plurality of dental care units as a whole. The water discharge pipe 19 of the gas-liquid separator 17 is connected to the water discharge pipe 21 of the spitone 20.

  When discharging the residual water in the water circuit 1, the suction-type fluid discharge device of the present embodiment first closes the on-off valve 3 on the water pressure source 2 side, and then operates the suction means 18 at the same time as in the water circuit 1. All the control valves 5, 7, 11, 16 provided in are opened by electrical control. As a result, air is sucked from the outlet of each instrument 24, the outlet of the cup water supply 6 or the bowl wash 10 and the check valve 14, and the residual water is sucked together with the sucked air and introduced into the gas-liquid separator 17 to The liquid separator 17 separates it into water and air. The separated water is discharged through a water discharge pipe 19 and a water discharge pipe 21 of a spitone 20 connected to the water discharge pipe 19. The separated air is sucked into the suction means 18 and released into the atmosphere. In the case where an electromagnetic valve is provided in the water circuit 1, suction can be performed through the check valve 9 or 13 provided in the bypass circuit 8 or 12 across the valve.

  As described above, the suction type fluid discharge device of the present embodiment includes the electromagnetic valve 16 and the gas-liquid separator 17 in which the suction circuit 15 is provided in the dental practice unit, and the suction means 18 provided outside the dental practice unit. By connecting this suction circuit 15 to the water circuit 1, it is possible to discharge the residual water easily, completely and in a short time without the need for special preparation for discharging the residual water as in the prior art. Can do. In addition, since the present invention is a method for sucking air and discharging residual water, moisture can be completely removed from the water circuit 1 and is extremely hygienic.

FIG. 2 is a modification of the circuit diagram in which a suction circuit is provided for the water circuit of the dental care unit showing Embodiment 2 of the present invention.
In this embodiment, instead of providing the solenoid valve 16 and the gas-liquid separator 17 constituting the suction circuit 15 in the dental care unit in the first embodiment, only the solenoid valve 16 is provided as shown in FIG. It is provided in the medical unit, and the gas-liquid separator 17 and the suction means 18 are provided outside the dental medical unit, and the same parts as those in the first embodiment are denoted by the same reference numerals and redundant description. Is omitted.

  As shown in FIG. 2, the suction type fluid discharge device of the present embodiment is provided by providing only the electromagnetic valve 16 constituting the suction circuit 15 in the dental practice unit and operating the suction circuit on the dental practice unit side. The gas-liquid separator 17 and the suction means 18 installed outside the dental care unit, for example, in the machine room of the doctor's office, are operated. The suction means 18 is operated as a suction means for the water circuit 1 of the entire plurality of dental care units. Then, the entire sucked gas-liquid can be intensively separated.

  The suction type fluid discharge device of the present embodiment is provided with the electromagnetic valve 16 constituting the suction circuit 15 in the dental care unit, and the suction circuit 15 provided with the gas-liquid separator and the suction means outside the dental care unit in the water circuit 1. As a result of the connection, since only the solenoid valve is provided on the dental care unit side, the configuration of the dental care unit is simplified, and suction and gas-liquid separation can be performed intensively. Similar actions and effects can be obtained.

  The suction type fluid discharge device according to the first and second embodiments described above discharges residual water in the water circuit together with the air, so that the inside of the water circuit is in a dry state and can effectively prevent propagation of germs.

It is a circuit diagram which provided the suction circuit with respect to the water circuit of a dental treatment unit. Example 1 It is the modification of the circuit diagram which provided the suction circuit with respect to the water circuit of a dental care unit. (Example 2)

Explanation of symbols

1 Water circuit
2 Water pressure source
3 On-off valve
4 Pressure reducing valve
5 Each control valve
6 Water supply
7, 11, 16 Solenoid valve
8, 12 Bypass circuit
9, 13, 14 Check valve
10 Bowl washing
15 Suction circuit
17 Gas-liquid separator
18 Suction means
19, 1 Water discharge pipe
20 Spitton
22 Air turbine handpiece
23 Micromotor handpiece
24 Instruments

Claims (7)

In a water circuit that reduces pressure water supplied from a water pressure source to normal pressure for dental practice and supplies it to instruments, water supply, etc. via an electromagnetic valve,
A suction-type fluid discharge device for a dental care unit, characterized in that a suction circuit for sucking and discharging residual water in the water circuit together with air is provided in the water circuit.   The suction circuit includes an electromagnetic valve that controls suction, suction means that sucks residual water in the water circuit together with air, and a gas-liquid separator that separates the sucked air and residual water. The suction type fluid discharge device of the dental practice unit according to claim 1.   The suction-type fluid of a dental practice unit according to claim 1 or 2, wherein an electromagnetic valve and a gas-liquid separator constituting the suction circuit are provided in a dental practice unit, and a suction means is provided outside the dental practice unit. Discharging device.   Connecting the discharge pipe of the gas-liquid separator to the water discharge pipe of Spiton, discharging the separated water through the water discharge pipe, and sucking the separated air with suction means and releasing it into the atmosphere. The suction-type fluid discharge device for a dental practice unit according to claim 1, 2, or 3.   3. The suction type fluid in a dental practice unit according to claim 1 or 2, wherein an electromagnetic valve constituting the suction circuit is provided in a dental practice unit, and a gas-liquid separator and a suction means are provided outside the dental practice unit. Discharging device.   6. The water circuit according to any one of claims 1 to 5, wherein a bypass circuit that straddles an electromagnetic valve is provided in the water circuit, and a check valve is provided in the bypass circuit to allow suction of residual water. Suction type fluid discharge device of dental care unit.   2. A check valve for sucking air is provided between an on-off valve and a pressure reducing valve provided on the water pressure source side of the water circuit so that residual water on the water pressure source side can be sucked. 5. The suction-type fluid discharge device for a dental care unit according to any one of 5 above.

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