US3894298A - Flushing system for sanitary flushing devices - Google Patents

Flushing system for sanitary flushing devices Download PDF

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Publication number
US3894298A
US3894298A US317355A US31735572A US3894298A US 3894298 A US3894298 A US 3894298A US 317355 A US317355 A US 317355A US 31735572 A US31735572 A US 31735572A US 3894298 A US3894298 A US 3894298A
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United States
Prior art keywords
flushing
valve
pressure
conduit
flusher
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US317355A
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English (en)
Inventor
Walter Mones
Harri Mones
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Zimmer and Kellerman
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Zimmer and Kellerman
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Filing date
Publication date
Priority claimed from DE19712163783 external-priority patent/DE2163783C3/de
Application filed by Zimmer and Kellerman filed Critical Zimmer and Kellerman
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Publication of US3894298A publication Critical patent/US3894298A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
    • A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G9/00—Bed-pans, urinals or other sanitary devices for bed-ridden persons; Cleaning devices therefor, e.g. combined with toilet-urinals
    • A61G9/02—Cleaning devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
    • A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
    • A61L2/22—Phase substances, e.g. smokes or aerosols

Definitions

  • ABSTRACT A flushing system for sanitary flushing devices, especially for flushing and disinfecting bed pans, urine bottles and the like, with pressure flushers for cold and warm water, in which two pressure flushers for cold and warm water respectively are connected to a common flushing conduit in which a pipe interruptor and an injector nozzle are arranged, while between the overpressure side of the injector nozzle and the warm water pressure flusher there is provided a control and relief conduit with a time delaying control valve interposed therein.
  • the present invention relates to a flushing system for sanitary flushing devices, especially for flushing and disinfecting bed pans, urine bottles and the like with pressure flushers for cold and warm water.
  • the heretofore known flushing systems for sanitary flushing devices are provided with pressure flushers arranged between the pressure conduits for cold and warm water and the flushing conduits. These pressure flushers must be provided with a socalled pipe interrupter so that in case of a stoppage or clogging up, flushing water contaminated with faeces or virus cannot flow back into the pressure conduits.
  • the pipe interrupters practically form an integral component of the heretofore known pressure flushers so that with the heretofore known flushing systems it is not possible to connect the flushing conduits for cold and warm water on the flushing side with each other because when actuating a pressure flusher, due to the clog-up at the flushing nozzles, water from the pipe interrupter would flow out at the other pressure flusher.
  • an object of the present invention to provide a flushing system for sanitary flushing devices, which will make it possible while employing heretofore known pressure flushers, to connect the flushing conduits for cold and warm water and an injection conduit for wash-active substances and disinfectants at the flushing side so that the flushing periods for cold and warm water may overlap and thus through the same flushing nozzles in the flushing device first cold water and then mixed water and subsequently warm water, and in the end phase of the flushing operation a washactive substance and a disinfectant may be passed through with the flushing water.
  • FIG. 1 diagrammatically illustrates a flushing system without admixture of a washing substance, water softener or disinfectant.
  • FIG. 2 diagrammatically illustrates a flushing system with the admixture of a washing substance or water softener and disinfectant from a central supply station.
  • FIG. 3 shows a flushing system with the admixture of a washing substance or water softener and a disinfectant from a supply tank.
  • the time delaying control valve may be formed by a displaceable valve spool or control piston adapted to be displaced against a pressure spring, a preceding and subsequently arranged two-way spindle valve, a by-pass conduit interconnecting said valve, an air reservoir and an inlet throttle or choke determining the time delay. Furthermore, it has proven advantageous to arrange a check valve between the control conduit and the preceding two-way spindle valve, said check valve being arranged in the by-pass conduit for the air reservoir. The check valve is intended at the end of the throttle flushing operation to permit a fast escape of the water accumulated in the control valve and the air reservoir.
  • the control piston is moved only when in the air reservoir a pressure has built up which corresponds to the resistance of the pressure spring preloading the control piston,
  • the pre-filling of the air reservoir has the advantage that further control valves will be unnecessary.
  • the relief conduit of the warm waterpressure flusher is connected through the by-pass con duit to the control conduit at a certain time delay only after the cold water-pressure flusher has been turned on so that the warm water-pressure flusher will be placed into action at approximately the same time delay. In this way, the pressure flushers can be so controlled that the flushing periods for cold and warm water will overlap each other and thereby flushing water will at a mixing temperature be pressed into the nozzles of the flushing devices.
  • the time delay between the movement of the control piston in the admixture valve and the actuation of the cold water-pressure flusher and the control pulse emanating therefrom in the control conduit is so set that the admixture of the wash-active substance and of the disinfectant is effected only during the last few seconds of the running period of the warm water-pressure flusher.
  • the admixture valve has in conformity with the invention associated therewith a pump which is arranged in parallel with regard to said admixture valve.
  • this pump has a differential piston which is displaceable against a pressure spring and the low pressure side of which is adapted to be connected with the control conduit which is connectable to the over-pressure side of the injector nozzle, whereas the high pressure side of said differential piston is connectable through the two-way spindle valve of the admixture valve to the supply tank and to the injection conduit.
  • the washactive substance and the disinfectant controlled by the admixture valve is at the end of the flushing program injected into the injection conduit, and after completion of the flushing program, a new wash-active substance and disinfectant is by the differential piston of the pump drawn in from the supply tank.
  • a check valve is provided at the end of the supply conduit.
  • the cold water-pressure flusher may likewise be independent of a manual actuation.
  • a turningon valve precedes the cold water-pressure flusher. More specifically, between the cold water-pressure flusher and the under-pressure side of the injector nozzle, there is provided a relief conduit in which the twoway turning-on valve may be arranged.
  • cold water with a pressure of from 2 to atmospheres above atmospheric pressure is conveyed by a pressure conduit 1 to a pressure flusher 2 whereas warm water at a pressure of from 2 to 10 atmospheres above atmospheric pressure is conveyed by a pressure conduit 3 to a pressure flusher 4.
  • the two pressure flushers 2, 4 are as far as their structure is concerned known in principle and comprise a housing 5, a piston 8 displaceable in a cylinder 6 against a pressure spring 7, and a valve cover 9 at the lower end of the piston 8.
  • a compensating passage 10 with narrow cross section.
  • the function of the two pressure flushers 2, 4 is extremely simple. As soon as the cylinder 6 is relieved, cold or warm water can flow.
  • a relief conduit 24 in which a two-way turning-on valve 25 is arranged leads to the cylinder 6 of the cold water-pressure flusher 2.
  • the cold water which is under the conduit pressure of from 2 to 10 atmospheres above atmospheric pressure, can, from the cylinder 6 of the pressure flusher 2, flow through the relief conduit 24 into the injector nozzle 16 and thereby also through the flushing nozzles 18 into the flushing device 17.
  • cold water flows through the pressure flusher 2, the flushing conduits l2 and 14, and the injector 16 to the flushing nozzles 18.
  • the control valve 28 operates in the following manner:
  • the control piston 31 will initially not move but only when a pressure equalization with regard to the pressure spring 30 acting upon the control piston 31 has occurred in the air reservoir 35. From this point on, the control piston 31 is displaced in the direction toward the two-way spindle valve 33. As soon as the control piston 31 is lifted off from a spindle 38 of the two-way spindle valve 32, the spindle valve 32 jumps into the position b so that the throughflow into the by-pass line 34 is blocked. With the illustrated embodiment, the control piston 31 wiill after approximately a running period of 7 seconds of the cold waterpressure flusher 2 engage a spindle 39 of the two-way spindle valve 33.
  • the two-way spindle valve 33 jumps from the illustrated position a into the position b so that warm water standing at the normal pressure of from 2-10 atmospheres above atmospheric pressure can through a relief conduit 40 of the warm water-pressure flusher 4 connected to the warm water-pressure flusher 4 pass into the air reservoir 35.
  • warm water from the pressure conduit 3 can through the warm water pressure flusher 4, flushing conduit 13 and 14, injection nozzle 16 and flushing nozzles 18, flow into the flushing device 17.
  • the twoway spindle valve 33 will keep the relief conduit 40 in open condition. From the cylinder 6 of the pressure flusher 4 and the compensating passage 10 water will flow out until in the reservoir 35 a pressure equalization with the feeding pressure of the pressure conduit 3 has taken place.
  • FIG. 2 shows an embodiment of a flushing system according to the invention in which at the end of the running period of the warm water-pressure flusher 4, a washing-active substance and/or a disinfectant is, from a supply conduit 46, injected into the flushing conduit 14.
  • an admixing valve 48 is inserted or interposed in the supply conduit 46 and a washing-active substance conduit 47 leading to the under-pressure side of the injector nozzle 16.
  • This admixing valve 48 is actuated through a control conduit 49 communicating with the over-pressure side of the injector nozzle 16.
  • the admixing valve 48 comprises a control piston 51 which is arranged in a cylinder 50 and which is adapted to be displaced against the thrust of a pressure spring 52.
  • the admixing valve 48 furthermore comprises a two-way spindle valve 53, an inlet throttle 54, and an outlet conduit 55 with interposed check valve 56.
  • the inlet throttle 54 of the admixing valve 48 is so dimensioned that the running period of the control piston 51 after the cold water-pressure flusher 2 has been turned on amounts to approximately 50 seconds. Subsequently, the control piston 51 hits a spindle 57 of the two-way spindle valve 53 and shifts the latter from its illustrated uninterrupted position a into the throughflow position b for the washing-active substance (WAS). At this instant, the WAS substance can, from the supply conduit 46 through the two-way spindle valve 53 and the WAS conduit 47 at the underpressure side of the injector nozzle 16, be injected into the flushing conduit 14 while the quantity can be controlled by means of an injection throttle in the admixture valve 48.
  • WAS washing-active substance
  • FIG. 3 illustrates a further modification of the flushing system according to the invention, according to which the washing-active substance and/or the disinfectant is not added from a central supply station into the supply conduit 46 under pressure but is pumped off from a supply tank 58.
  • a pump 59 is shifted into communication with the admixing valve 48.
  • the pump 59 comprises a differential piston 61 which is arranged in a step-shaped cylinder 60 and which is adapted to be displaced against the thrust of a pressure spring 62. in this starting position, the differential piston 61 has drawn wash-active substance from the supply tank 58 through the supply conduit 46 and the twoway spindle valve 53 in the admixing valve 48.
  • control piston 51 in the admixing valve 48 has shifted the two-way spindle valve 53 from the illustrated intake position a to the injection position b, pressure water can from the control conduit 49 flow through a pump conduit 63 into the cylinder 60 and can displace the differential piston 61.
  • the drawn-in wash-active substance and/or the disinfectant is through an injection conduit and the two-way spindle valve 53 injected into the WAS conduit 47.
  • a check valve is arranged in order that the washing-active substance during the injection stroke of the pump 59 cannot flow back into the supply tank 58. The function of the admixing valve 48 will substantially remain unchanged.
  • the flushing system according to the present invention has the outstanding advantage that by means of one and the same flushing nozzles in the flushing device, dependent on the water pressure, in conformity with a fixed determinable time program, first cold water and then mixing water with increasing temperature and subsequently only warm water is injected.
  • a further advantage of the invention consists in that the actuation of the warm water-pressure flusher is no longer effected manually at any at random time interval after the cold water pressure flusher has been turned off, but instead is effected automatically in conformity with the running period of the cold water-pressure flushing in conformity with the fixed definite time program.
  • Still another important advantage of the invention consists in the reduction of the elements to be used because according to the invention only one set of flushing nozzles is required in the flushing device.
  • a flushing system for sanitary flushing devices which includes in combination: a cold water pressure flusher having an inlet and an outlet for respectively receiving and discharging cold water, a warm water pressure flusher having an inlet and an outlet for respectively receiving and discharging warm water, flushing conduit means common to said cold water pressure flusher and said warm water pressure flusher and connected to the respective outlets thereof, pipe interrupter means and injector nozzle means inter posed in said conduit means, said injector nozzle means having an overpressure side and a low pressure side and being located behind said interrrupter means when looking in the direction of flow of the water from said pressure flushers through said common conduit means, flushing nozzle means connected to said injector nozzle means for receiving flushing fluid therefrom and dispensing same, cold water relief conduit means inter posed between the cold water pressure flusher and the low pressure side of the injector nozzle, time delaying control valve means, warm water relief conduit means interposed between the warm water pressure flusher and the time delaying control valve
  • said time delaying control valve means includes: a spring loaded reciprocable control piston, two two-way spindle valves respectively preceding and following said control piston, by-pass conduit means adapted to interconnect said spindle valves, an air reservoir connectable to said by-pass conduit means, and inlet throttle means associated with said time delaying control valve means for determining the time delay of the latter.
  • said pump means includes a differential piston having a low pressure side as well as a high pressure side and also includes pressure spring means, said differential piston being displaceable against the thrust of said pressure spring means, the low pressure side of said differential piston being connected to the overpressure side of said injector nozzle means and the high pressure side of said differential piston being connected to the two-way spindle valve associated with said admixing valve to said storage tank.
  • said time delaying control value means includes means for effecting a time delay be tween the actuation of said cold water pressure flusher and the actuation of said admixing valve, to such an extent that the injection of the additive by said admixing valve amounts to approximately seven-eighths of the total running period of the two pressure flushers.
  • a flushing system in combination according to claim I which includes housing means for housing said flushing nozzle means, a blocking piston associated with said housing means, pressure spring means associated with said blocking piston, said blocking piston being displaceable against the thrust of said pressure spring means, and pressure conduit means adapted to establish communication between said blocking piston and the overpressure side of said injector nozzle means.
  • a flushing system in combination to claim I includes means for establishing a time delay between the actuation of said cold water flusher and said warm water flusher to such an extent that said time delay amounts to approximately two-thirds of the running period of said cold water pressure flusher.

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Multiple-Way Valves (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
US317355A 1971-12-22 1972-12-21 Flushing system for sanitary flushing devices Expired - Lifetime US3894298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712163783 DE2163783C3 (de) 1971-12-22 Spülsystem für sanitäre Spülapparate

Publications (1)

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US3894298A true US3894298A (en) 1975-07-15

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US317355A Expired - Lifetime US3894298A (en) 1971-12-22 1972-12-21 Flushing system for sanitary flushing devices

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US (1) US3894298A (de)
JP (1) JPS4871096A (de)
AT (1) AT319477B (de)
BE (1) BE793104A (de)
ES (1) ES409857A1 (de)
FR (1) FR2165628A5 (de)
NL (1) NL7216533A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341399A (en) * 1991-04-11 1994-08-23 Sony Corporation Digital transmission test signal generating circuit
CN101786090A (zh) * 2010-03-26 2010-07-28 天津泰达环保有限公司 提供清洗用水的自动供水系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1892291A (en) * 1930-10-22 1932-12-27 Kny Scheerer Corp Bedpan washer
US2761149A (en) * 1953-08-24 1956-09-04 Leo L Kay Self-flushing bedpan
US2826208A (en) * 1955-05-05 1958-03-11 Boffa Augusto Machine for emptying, washing, rinsing, and disinfecting bed-pans
US3166767A (en) * 1960-10-31 1965-01-26 American Sterilizer Co Combination toilet and bedpan washer
US3629872A (en) * 1970-07-06 1971-12-28 American Standard Inc Bed pan rinser
US3645283A (en) * 1968-10-07 1972-02-29 Castan Ltd Apparatus for cleaning bedpans
US3646617A (en) * 1970-09-24 1972-03-07 Jerome Ingles Heald Bedpan washer with pistol-type nozzle
US3720961A (en) * 1971-07-26 1973-03-20 G Garvey Self-cleaning restroom

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1892291A (en) * 1930-10-22 1932-12-27 Kny Scheerer Corp Bedpan washer
US2761149A (en) * 1953-08-24 1956-09-04 Leo L Kay Self-flushing bedpan
US2826208A (en) * 1955-05-05 1958-03-11 Boffa Augusto Machine for emptying, washing, rinsing, and disinfecting bed-pans
US3166767A (en) * 1960-10-31 1965-01-26 American Sterilizer Co Combination toilet and bedpan washer
US3645283A (en) * 1968-10-07 1972-02-29 Castan Ltd Apparatus for cleaning bedpans
US3629872A (en) * 1970-07-06 1971-12-28 American Standard Inc Bed pan rinser
US3646617A (en) * 1970-09-24 1972-03-07 Jerome Ingles Heald Bedpan washer with pistol-type nozzle
US3720961A (en) * 1971-07-26 1973-03-20 G Garvey Self-cleaning restroom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341399A (en) * 1991-04-11 1994-08-23 Sony Corporation Digital transmission test signal generating circuit
CN101786090A (zh) * 2010-03-26 2010-07-28 天津泰达环保有限公司 提供清洗用水的自动供水系统

Also Published As

Publication number Publication date
FR2165628A5 (de) 1973-08-03
DE2163783A1 (de) 1973-07-05
DE2163783B2 (de) 1975-01-23
BE793104A (fr) 1973-04-16
ES409857A1 (es) 1975-11-16
JPS4871096A (de) 1973-09-26
AT319477B (de) 1974-12-27
NL7216533A (de) 1973-06-26

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