US3333610A - Apparatus for automatically charging fluid under pressure - Google Patents

Apparatus for automatically charging fluid under pressure Download PDF

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Publication number
US3333610A
US3333610A US431354A US43135465A US3333610A US 3333610 A US3333610 A US 3333610A US 431354 A US431354 A US 431354A US 43135465 A US43135465 A US 43135465A US 3333610 A US3333610 A US 3333610A
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US
United States
Prior art keywords
controlled
feed
feed receptacle
duct
receptacle
Prior art date
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
Application number
US431354A
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English (en)
Inventor
Andre E Roux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
D'etudes Invention Recherche Application Et De Realisations Dite Seirar Ste
INV RECH APPLIC ET DE REALISAT
Original Assignee
INV RECH APPLIC ET DE REALISAT
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by INV RECH APPLIC ET DE REALISAT filed Critical INV RECH APPLIC ET DE REALISAT
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Publication of US3333610A publication Critical patent/US3333610A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/028—Special adaptations of indicating, measuring, or monitoring equipment having the volume as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
    • G01F11/284—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement combined with electric level detecting means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F13/00—Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/006—Details for charging or discharging refrigerants; Service stations therefor characterised by charging or discharging valves

Definitions

  • the present invention relates to an automatic apparatus which is intended for filling hermetic circuits containing volatile fluids, notably cooling circuits.
  • Hermetic construction of such circuits generally called systems, ensures complete safety from the viewpoint of fluid tightness, but it requires high precision in the feed control during the operation of charging with cooling fluid, which precision is rendered necessary by the fact that it is almost impossible subsequently to adjust this feed control by reason of the very hermeticity of the systems.
  • the present invention is not concerned exclusively with cooling circuits, but includes all apparatus operating with the aid of volatile fluids which have at normal temperature a saturated vapour pressure which is higher than atmospheric pressure, such as, for example, fire extinguishers, atomisers for perfumes, insecticides, paints, etc., which necessitate a precise fluid charge, whether the fluid be employed as a functional object or a propulsion agent or vehicle.
  • the present invention relates to:
  • An automatic charging device for fluids whose saturated vapour pressure at ambient temperature is higher than atmospheric pressure consisting of a first controlledfeed receptacle supplied with liquid through a duct extending from a reservoir and comprising means for automatically closing the said duct; a second controlled-feed receptacle whose upper level is situated below the lower level of the first controlled-feed receptacle, the second controlled-receptacle being connected on the one hand to the said first controlled-feed receptacle by a lower duct for the liquid phase and by an upper duct for the vapour phase of the fluid, and being connected on the other hand by any appropriate duct to a device for the distribution of the fluid comprising means for hermetically coupling it to the unit to be charged, the second controlled-feed receptacle comprising means for simultaneously producing the decoupling of the distribution member and the closing of its supply duct, so that in a first operation the first controlled-feed receptacle is emptied by gravity into the second controlled-feed receptacle, and in
  • FIGURE 1 is a diagrammatic illustration of a hermetic cooling system.
  • FIGURE 2 is an example of an embodiment of the invention applicable in particular to the hermetic system of FIGURE 1.
  • FIGURE 3 is an example of a construction of a spray gun adapted to efiect the connection of the system of FIGURE 1.
  • FIG- URE 1 a hermetic cooling system, of which the compressor 21 is connected by a tube 22 to an automatic valve 23 designed to effect the substantially instantaneous connection of the system to the station to be charged with cooling fluid, and the disconnectio of the system at the end of the charging.
  • the charging station proper which is advantageously constructed in the form of a cabinet, comprises a duct 7 for the supply of cooling fluid coming from a constantpressure reservoir (not shown). This duct supplies a dehydrator 8. Two dehydrators are shown in the drawing, because it is essential to be able to change a dehydrator without interrupting the operation of the charging station.
  • the shut-off valves are provided upstream and downstream of the dehydrators.
  • the dehydrated fluid then passes through a shut-off valve 9, a cock 10 for the manual adjustment of the rate of flow and an automatic valve 11 and enters a controlled-feed receptacle 1.
  • This controlledfeed receptacle contains a float 5 adapted to interrupt the light beam illuminating the photoelectric cell 12 which controls the closing of the automatic valve 11.
  • Masking of the cell 12 produces in addition the extinction of the lamp 25 illuminating the said cell.
  • the controlled-feed receptacle 1 is in communication, with regard to the vapour phase, with an identical controlled-feed receptacle 2 through the duct 4.
  • the controlled-feed receptacles 1 and 2 are also in communication, with regard to the liquid phase, through a duct 3 comprising a cock 13 for the adjustment of the rate of flow and an automatic valve 14, closing of which is controlled'by a photoelectric cell 15, of which the control light beam may be masked by a float 6.
  • the same float 6 may, in the lower position in which it is illustrated, mask the light beam controlling another photoelectric cell 18, which cell 18 controls in turn the opening of an automatic three-way valve 19 supplying com pressed air to a jack 20 and provided with an exhaust outlet 24.
  • the liquid contained in the controlled-feed receptacle 2 may flow through the flexible duct 16 to the mouthpiece 17, which is disposed in a spray gun provided with a trigger which can be operated to eifect the connection to the mouthpiece 23 of the system to be charged.
  • the spray gun is diagrammatically illustrated in FIG- URE 3.
  • the fluid supply duct 16 leads to the mouthpiece 17.
  • the duct 33 supplies compressed air to the automatic three-way valve 19 disposed in the grip.
  • the jack 20 is disposed in the body of the gun. It consists of a cylinder 41 in which there is slidably mounted the piston 36 urged forwards by the spring 37.
  • the piston 36 comprises an external fork 38 fast with the ring 39 surrounding the mouthpiece 17.
  • the compressed air coming from the valve 19 can penetrate into the cylinder 41 situated in front of the piston 36.
  • the gun is provided with a trigger 34 which, by mechanical action, retracts the piston 36 and the ring 39 so as to permit engagement of the mouthpiece 23, which is locked when the trigger 34 is released and when the ring 39 and the piston 36 move forwards.
  • the detent or lever 35 actuates a switch 35 which closes the circuit of the relays of the charging station and permits preparation of the feed quantity necessary for the next charging.
  • the apparatus operates as follows: it will be assumed that one charging operation has just been etfected.
  • the controlled-feed receptacle 1 is full, and the float 5 has masked the photoelectric cell 12 which has brought about the closing of the valve 11 and the extinction of its excitation lamp 25.
  • the excitation lamp 27 of the cell 15 is extinguished.
  • the valve 14 is closed and the controlled-feed receptacle 2 is empty.
  • the float 6 has masked the cell 18 which has brought about the extinction of its excitation lamp 26, the opening of the automatic valve 19 and the excitation of a time delay relay 42.
  • the piston 36 of the jack 20 is retracted under the action of the compressed air, bringing with it the fork 38 and the ring 39.
  • the male mouthpiece 23 of the charged system is unlocked and is ejected from the mouthpiece 17 of the gun under the double action of the expansion of a spring disposed in the mouthpiece 17 and traces of pressurised fluid remaining in the volume contained in the very small space separating the two mouthpieces.
  • the time delay relay closes the valve 19 and opens the exhaust outlet 24, the compressed air contained in the space 41 being discharged into the atmosphere and the piston 36 is moved under the action of the spring 37 toward-the left as viewed in FIG. 3, and the ring 39 being returned in the forward direction.
  • the time delay relay produces in addition the ignition of the excitation lamp 27 of the cell 15, which in turn causes the opening of the automatic valve 14.
  • the feed quantity is prepared by transfer of the fluid from the controlled-feed receptacle 1 to the controlled-feed receptacle 2 merely under the action of gravity, at constant saturated vapour pressure, temperature and volume.
  • This preparation of the feed quantity takes place in the very short interval of time between the ejection of the spray gun at the end of one charging operation and the positioning of the same spray gun on a new apparatus to be charged.
  • the operator grasps the grip of the charging gun and actuates the trigger 34 and subsequently the detent 35.
  • the trigger 34 retracts the piston 36 and the fork 38, which carries with it the ring 39. It is then possible to engage the mouthpiece 23 of the new system to be charged in the mouthpiece or chuck 17 of the gun, both mouthpieces comprising a normally closed valve which opens when the two mouthpieces are connected together.
  • the spring 37 expands and the ring 39 is moved forwards, thus locking the mouthpiece 23.
  • the fluid charge can then flow into the system to be charged.
  • Actuation of the detent 35 brings about the excitation of relays which ignite the two lamps 25 and 26.
  • the cells 12 and 18 are thus excited and the cell 12 opens the valve 11.
  • the float masks the cell 12, thus producing extinction of the lamp 25 and closing 'of the valve 11, and the float 6 masks the cell 18, thus producing the extinction of the lamp 26, the opening of the valve 19, the excitation of the time delay relay 42 and the ejection of the spray gun.
  • the speed with which the controlled-feed receptacle 1 is filled may be adjusted by means of the cock 10. When this speed is the same as the speed at which the fluid flows into the system to be charged, the volume of liquid is constant in the charging station. The operation of the charging station is then isothermal.
  • the described means afford great operating safety and prevent the operating faults which result in over-charging and under-charging.
  • the charging is effected with a precision higher than 1% by volume. This precision could be increased by employing controlled-feed receptacles of greater height and smaller cross-section.
  • the vertical position of the photoelectric cells may be adjusted at will. More particularly, the relative positions of the cells 15 and 18 may be varied to adjust the feed quantity to be supplied to the system to be charged.
  • the capacity of the control-feed receptacles may vary within very wide limits, the lower limit being of the order of a cubic centimetre, and the upper limit being that given to the controlled-feed receptacles, the crosssectional areas of fluid flow being made proportional to the capacities of the controlled-feed receptacles and to the desired speeds of flow which may be adjusted with the aid of the cocks 10 and 13.
  • the duct 4 affording communication between the two controlled-feed receptacles in regard to the vapour phase must have a sufficient cross-section.
  • the charging station is advantageously constructed in the form of a cabinet.
  • Automatic charging apparatus for fluids whose saturated vapour pressure at ambient temperature is above atmospheric pressure, comprising a first controlled-feed receptacle fed with liquid through a duct extending from a reservoir and comprising means for automatically closing the said duct, a second controlled-feed receptacle whose upper level is situated below the lower level of the first controlled-feed receptacle, the second controlledfeed receptacle being on the one hand connected to the said first controlled-feed receptacle by a lower duct for the liquid phase and by an upper duct for the vapour phase of the fluid, and on the other hand connected by any appropriate duct to a fluid distribution member comprising means for hermetically coupling it to the unit to be charged, the second controlled-feed receptacle comprising means for simultaneously producing the decoupling of the distribution member and the closing of its supply channel, so that in a first operation the first controlled-feed receptacle is emptied by gravity into the second controlled-feed receptacle and in a second operation the first controlled-
  • Charging apparatus made in the form of a cabinet.
  • Charging apparatus according to claim 1, wherein the means for automatically closing the ducts are automatic valves controlled by photelectric cells whose excitation beam is masked by a float moving within the said controlled-feed receptacles.
  • Charging apparatus according to claim 1, wherein the means for fitting the mouthpiece of the said flexible duct to the unit to be charged comprises a spray gun including a device for locking the mouthpiece of the unit to be charged.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Nozzles (AREA)
  • Basic Packing Technique (AREA)
US431354A 1964-02-28 1965-02-09 Apparatus for automatically charging fluid under pressure Expired - Lifetime US3333610A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR965502A FR1395017A (fr) 1964-02-28 1964-02-28 Dispositif de charge automatique de fluides sous pression

Publications (1)

Publication Number Publication Date
US3333610A true US3333610A (en) 1967-08-01

Family

ID=8824289

Family Applications (1)

Application Number Title Priority Date Filing Date
US431354A Expired - Lifetime US3333610A (en) 1964-02-28 1965-02-09 Apparatus for automatically charging fluid under pressure

Country Status (6)

Country Link
US (1) US3333610A (fr)
BE (1) BE650107A (fr)
DE (1) DE1253680B (fr)
FR (1) FR1395017A (fr)
LU (1) LU46562A1 (fr)
NL (1) NL6409829A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6343391B1 (en) 1998-05-19 2002-02-05 Gray Matter Holdings, Llc Towel-mat with a frame member and removably attached membranes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3939296C3 (de) * 1989-11-28 1996-02-08 Electrolux Siegen Gmbh Vorrichtung zum Entsorgen des Kältemittels von Absorptions-Kältesystemen
GB9608261D0 (en) * 1996-04-20 1996-06-26 Hussmann Europ Ltd Refrigerant metering devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789586A (en) * 1953-12-30 1957-04-23 Carter Prod Inc Apparatus for charging volatile propellant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789586A (en) * 1953-12-30 1957-04-23 Carter Prod Inc Apparatus for charging volatile propellant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6343391B1 (en) 1998-05-19 2002-02-05 Gray Matter Holdings, Llc Towel-mat with a frame member and removably attached membranes
US6634040B2 (en) 1998-05-19 2003-10-21 Gray Matter Holdings, Llc Towel-mat with a frame member and removably attached membranes
US6915537B2 (en) 1998-05-19 2005-07-12 Kelsyus, Llc Frame member and attached membranes
US20050241066A1 (en) * 1998-05-19 2005-11-03 Le Gette Brian E Frame member and attached membranes
US7127754B2 (en) 1998-05-19 2006-10-31 Kelsyus, Llc Frame member and attached membranes
US20080098531A1 (en) * 1998-05-19 2008-05-01 Brian Edward Le Gette Frame Member and Attached Membranes
US7490378B2 (en) 1998-05-19 2009-02-17 Kelsyus, Llc Frame member and attached membranes

Also Published As

Publication number Publication date
LU46562A1 (fr) 1964-09-18
NL6409829A (fr) 1965-08-30
DE1253680B (de) 1967-11-09
BE650107A (fr) 1964-11-03
FR1395017A (fr) 1965-04-09

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