Compressed water supply system and supply device for dental unit-chair

Abstract


A pressurized water supply system for a dental unit-chair comprising a water purifier purifying or sterilizing water from a water supply source, and supplying the water to which a given pressure is applied to a medical instrument instrument. A pressurized water supply device for a dental unit-chair includes a case, an inflow tube provided to the case and connected to a water supply source, a pump installed within the case and connected to the inflow tube to jet out the water from the water supply source under a given pressure, a water purifier provided to the case in multi-stage and removing various alien substances, chemical substances, heavy metals, ions, germs, etc. from the water supplied from the pump, and
Patent number: 6179613
Filing date: Mar 29, 1999
Issue date: Jan 30, 2001
Inventor: Won Dong Yang


What is claimed is:

1. Apparatus for supplying pressurized water to a dental instrument and pressurized, purified water to an associated drinking water basin, comprising:

an inlet line adapted for connection to a water supply source to receive inlet water therefrom,
a preliminary filter means connected to said inlet line,
a pump for pressurizing the inlet water after passage through the preliminary filter means,
a further filter means connected to said pump, said further filter means including a carbon filter and a reverse osmotic filter,
a connecting line between said further filter means and an auxiliary filter,
said auxiliary filter having an outlet connected to said drinking water basin,
a further line connect to said connecting line at a location between said further filter means and said auxiliary filter,
an electric heater connected by a branch line to said further line for heating pressurized water therein,
said heater having an outlet connected to said dental instrument for supplying heated pressurized water thereto,
a pressure control means in said further line downstream of said branch line, and
a storage tank connected to said pressure control means for storing pressurized water and maintaining the water above a specific minimum pressure, said storage tank being connected to deactivate said pump when a given maximum pressure is reached in said storage tank, said storage tank supplying pressurized water therein to said drinking water basin and to said heater, when said pump is deactivated and until said minimum pressure is reached whereupon said pump is re-activated.

2. Apparatus for supplying pressurized, heated water to a dental instrument and pressurized purified drinking water to an associated drinking water basin comprising:

a casing having an inlet connection for receiving supply water, a first outlet connection to supply pressurized, heated water to said dental instrument, and a second outlet connection to supply purified drinking water to said water basin,
a preliminary filter means connected to said inlet connection for filtering said supply water at said inlet connection,
a pump connected to said preliminary filtering means for pressurizing the inlet water after passage through the preliminary filtering means,
a further filtering means connected to said pump,
a connection line connecting said further filter means and an auxiliary filter, said auxiliary filter being connected to said second outlet connection for supplying pressurized, filtered water thereto,
a further line connected to said connecting line at a location between said further filter means and said auxiliary filter,
an electric heater connected by a branch line to said further line for heating pressurized water therein,
said heater having an outlet connected to said first outlet for supplying heated pressurized water to said dental instrument,
a pressure control means in said further line downstream of said branch line, and
a storage tank connected to said pressure control means for storing pressurized water therefrom and maintaining the water above a specific minimum pressure, said storage tank being connected to deactivate said pump when a given maximum pressure is reached in said storage tank, said storage tank supplying pressurized water therein to said drinking water basin and to said heater when said pump is deactivated and until said minimum pressure is reached whereupon said pump is re-activated,
said casing containing said preliminary filter means, said pump, said further filtering means, said auxiliary filter, said heater and said storage tank.

3. Apparatus as claimed in claim 2, wherein said further filtering means comprises a carbon filter and a reverse osmotic filter connected in sequence.

4. Apparatus as claimed in claim 3, comprising a waste water tube connected to said reverse osmotic filter for discharging separated waste water to a waste water outlet on said casing.

5. Apparatus as claimed in claim 2, comprising a pressure gauge connected between said carbon filter and said reverse osmotic filter.

6. Apparatus as claimed in claim 2, wherein said storage tank includes a flexible bag containing the pressurized water at a pressure between said maximum and minimum pressures.

7. Apparatus as claimed in claim 2, wherein said heater comprises a heating tank containing pressurized water, an electric heating element connected to said tank to heat the water therein, a temperature sensor for sensing temperature of the water in said heating tank and switch means for interrupting power supply to said heating element when the water temperature in said tank reaches a predetermined value, said apparatus further comprising a cooling fan in said casing.

8. Apparatus as claimed in claim 7, comprising a disinfector in said heating tank.