EP1013931A2 - Pompe de refoulement de vapeurs - Google Patents

Pompe de refoulement de vapeurs Download PDF

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Publication number
EP1013931A2
EP1013931A2 EP99123667A EP99123667A EP1013931A2 EP 1013931 A2 EP1013931 A2 EP 1013931A2 EP 99123667 A EP99123667 A EP 99123667A EP 99123667 A EP99123667 A EP 99123667A EP 1013931 A2 EP1013931 A2 EP 1013931A2
Authority
EP
European Patent Office
Prior art keywords
valve
shut
temperature
pump device
dependent
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.)
Granted
Application number
EP99123667A
Other languages
German (de)
English (en)
Other versions
EP1013931A3 (fr
EP1013931B1 (fr
Inventor
Jürgen Schmidt
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.)
Duerr Dental SE
Original Assignee
Duerr Dental SE
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.)
Filing date
Publication date
Application filed by Duerr Dental SE filed Critical Duerr Dental SE
Publication of EP1013931A2 publication Critical patent/EP1013931A2/fr
Publication of EP1013931A3 publication Critical patent/EP1013931A3/fr
Application granted granted Critical
Publication of EP1013931B1 publication Critical patent/EP1013931B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
    • F04B37/20—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids for wet gases, e.g. wet air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/10—Inlet temperature

Definitions

  • the invention relates to a pumping device for conveying of vapors, especially vapors of low-boiling liquids according to the preamble of claim 1.
  • Such pumping devices are e.g. on petrol pumps used to remove fuel from motor vehicles the motor vehicle tank displaced gasoline vapors in the Promote gas station tank.
  • a pump device is therefore intended by the present invention for conveying vapors according to the generic term of claim 1 are further developed so that operational safety the pumping device, even when the Compression heat is retained.
  • the temperature-dependent shut-off valve ensures for the fact that gasoline vapors only below a predetermined Temperature are promoted and thus compression heat arises. If the specified temperature is exceeded, closes the shut-off valve and the pump unit works against a standing gasoline vapor column, then no compression heat the pump device additionally can heat up since no compression work is done becomes.
  • the control that closes or opens the controls the temperature-dependent shut-off valve can itself according to claim 2 by the action of heat be deformable.
  • Such a control element thus serves at the same time as a temperature probe.
  • control element according to claim 3 work together in a temperature-dependent deformable body. Such a structure allows use of standard shut-off valves.
  • a bimetallic body i.e. a body that acts as a layer composite two metal layers with different coefficients of thermal expansion is carried out
  • the bimetal body are used in different temperature ranges and with different Temperature stroke available.
  • a switching characteristic of the shut-off valve i.e. also the total is still slightly below the switching temperature or a large part of the delivery capacity of the pumping device available.
  • a snap action of the bimetallic body is claimed 7 particularly easy to implement.
  • an expansion element can also be used.
  • it is a body with a high coefficient of expansion, its thermal expansion either directly to open or close the shut-off valve or indirectly for actuating the control element of the shut-off valve is being used.
  • Wax cartridge is in different geometries available, easy to use and has a high Coefficient of thermal expansion.
  • control of the shut-off valve provided by a temperature sensor.
  • the control of the shut-off valve is then not carried out directly or indirectly mechanically, but via a control signal of the temperature sensor.
  • Such sensor valve units are relatively inexpensive.
  • the additional use of the Temperature sensor for one of the shut-off valve variants mentioned above with a deformable depending on the temperature Body results in a particularly reliable pumping device.
  • An electromagnet is a particularly robust and inexpensive Actuator (cf. claim 10).
  • the development according to claim 11 has the character of Shutoff valve as a safety device bill. Because the shut-off valve during normal operation of the pumping device is always open, this open position is open simple way and without constant electrical control causes so that the electromagnet is protected and energy is saved.
  • a gas pump to a tank 12 has a piston pump 14 Conveying gasoline vapors.
  • Their inlet valve 16 and Exhaust valve 18 is outsourced for purposes of illustration shown.
  • the pump device 10 pumps gasoline vapors, those when refueling a vehicle from its tank 20 be displaced using a proboscis Nozzle and a gasoline vapor return line 22, 24 back to tank 12.
  • the pump device 10 also points in the conveying direction the gasoline vapors lying in front of the inlet valve 16 shut-off valve 26 operating in a temperature-dependent manner. This is thermally coupled to the piston pump 14, i.e. Shut-off valve 26 and piston pump 14 have the same Temperature. This is usually temperature-dependent working shut-off valve 26 open. The temperature rises the piston pump 14 above a predetermined limit value, the thermally coupled shut-off valve 26 closes, as will be described in more detail below.
  • a pressure relief valve 28 open.
  • the piston pump shown in section in Figure 2 14 has a crankcase located under operating conditions 30 and one screwed on top of it Cylinder head 32.
  • a molded bearing seat 34 of the crankcase 30 is a via a bearing 36 Drive shaft 38 mounted.
  • the drive shaft 38 is about an electric motor, not shown in the drawing, the left in Figure 2 of the bearing holder 34 outside of Crankcase 30 is arranged, driven.
  • With the Drive shaft 38 is a crank body via a threaded bolt 40 42 connected to which a balancing body 44 is integrally formed is.
  • Runs on a crank pin 46 of the crank body 42 via a bearing 48 a connecting rod 50 on which a lower Piston shell 52 is integrally formed.
  • a piston seal is located between the two piston shells 52, 54 58 trapped.
  • the piston unit formed by the components 50 to 58 60 runs in a cylinder liner 62, which has two axially successive disc springs 64 on one shoulder 66 of the crankcase 30 rests and on the underside of the cylinder head 32 via a valve support plate 68 is supported.
  • the latter bears the leaf spring Inlet valve 16, not shown in Figure 2 designed as a leaf spring outlet valve 18, the temperature dependent working shut-off valve 26 and the pressure relief valve 28
  • the shut-off valve 26 has a conical bowl-shaped Snap valve disk 70 made of bimetal with a central one Hole 72 (see. In particular Fig. 3 and 4) with which it on a threaded bolt 74 of the valve support plate 68 is stuck.
  • a nut 76 is on the threaded bolt 74 screwed, the valve plate 70 against one on the Valve carrier plate 68 adjacent spacer ring 78, the is also plugged onto the threaded bolt 74.
  • An upper flat sealing surface 80 of the valve carrier plate 68 forms with an outer edge 82 of the valve plate 70 a linear circular sealing point if the Valve plate 70 under the action of heat in a down conical shell-shaped closing geometry is snapped.
  • the circular sealing point lies radially outside of one formed in the valve support plate 68 inlet opening 84, with the lower end of the inlet valve 16 cooperates.
  • the pressure relief valve 28 is on the outlet side with the inlet 88 of the crankcase with a suction space 86 and on the inlet side with an outlet 90 of the piston pump 14 in connection.
  • the Pressure relief valve 28 are in the flow direction of the gasoline vapor the temperature-dependent shut-off valve 26, the inlet valve 16 and the outlet valve 18 downstream.
  • An outlet 90 of the piston pump 14 is via the Line 24 (see FIG. 1) connected to the tank 12.
  • flame retardants 92 and 94 are flame retardants 92 and 94, respectively intended.
  • the latter each have a winding 96 made of corrugated Sheet metal tape (tape securing).
  • the switching temperature If the switching temperature is exceeded, it snaps the valve plate 70 of the shut-off valve 26 via a unstable middle position in the closed position shown in FIG. 4, at which the edge 82 of the valve plate 70 the sealing surface 80 of the valve carrier plate 68 rests, so that the inlet opening 84 is closed and the Piston unit 60 regardless of the position of the intake valve 16 and outlet valve 18 to one and the same gas volume is working. The conveyance of gasoline vapor through the Piston pump 14 is thus prevented.
  • the piston pump 14 thus operates in the closed position of the shut-off valve 26 against one in the area of the outlet 90 standing gasoline vapor column, which no further is compressed and therefore does not heat up. Vice versa the piston pump 14 continues by convection cooled by ambient air. This cooling is stronger than the frictional heat still generated in the piston pump 14, so that a total cooling of the pumping device 10 receives.
  • Valve plate 70 of the shut-off valve 26 After clearly falling below the switching temperature (Hysteresis of the bimetal valve disc) snaps Valve plate 70 of the shut-off valve 26 again in the Inlet opening 84 releasing open position, whereby the Piston unit 60 can suck gasoline vapor again.
  • the temperature-dependent one shown in FIG Shut-off valve 26 is controlled by a piston 102 that runs tightly in a cylindrical housing 104, in which an expansion element 106 is arranged.
  • the Expansion element 106 e.g. a wax cartridge, stretches out with increasing temperature.
  • the stroke of the piston 102 is dimensioned so that the shut-off valve 26 then opens, when an expansion of the expansion element 106 reaches which corresponds to the switching temperature.
  • the piston 102 is under the bias of a spring 108, so when Contraction of the expansion element 106 of the pistons 102 is tracked in contact with the expansion element 106, and the shut-off valve 26 when the switching temperature falls below opens again.
  • the temperature-dependent one shown in FIG. 6 Shut-off valve 26 is resiliently biased into the open position and via an electromagnet 110 in the closed position adjustable.
  • the electromagnet 110 is one Temperature switch 112 controlled, the thermally to the Piston pump 14 is coupled. When exceeding the The temperature switch 112 excites the switching temperature a power amplifier 114 the electromagnet 110, so that it closes the shut-off valve 26. When falling short the temperature switch ends the switching temperature 112 its output signal, so that the shut-off valve 26 is opened again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Temperature-Responsive Valves (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
EP99123667A 1998-12-23 1999-11-29 Pompe de refoulement de vapeurs Expired - Lifetime EP1013931B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19859752A DE19859752A1 (de) 1998-12-23 1998-12-23 Pumpeinrichtung zum Fördern von Dämpfen
DE19859752 1998-12-23

Publications (3)

Publication Number Publication Date
EP1013931A2 true EP1013931A2 (fr) 2000-06-28
EP1013931A3 EP1013931A3 (fr) 2000-12-13
EP1013931B1 EP1013931B1 (fr) 2006-02-01

Family

ID=7892458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123667A Expired - Lifetime EP1013931B1 (fr) 1998-12-23 1999-11-29 Pompe de refoulement de vapeurs

Country Status (4)

Country Link
EP (1) EP1013931B1 (fr)
AT (1) ATE317064T1 (fr)
DE (2) DE19859752A1 (fr)
ES (1) ES2257005T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014918A1 (de) * 2007-03-26 2008-10-02 Dürr GmbH & Co. KG Luft- und Prozessortechnik Benzindampfpumpe
RU2487269C2 (ru) * 2011-03-23 2013-07-10 Федеральное государственное военное образовательное учреждение высшего профессионального образования "Военный авиационный инженерный университет" (г. Воронеж) Министерства обороны Российской Федерации Компрессор поршневой для взрывоопасных газов
DE102023203130A1 (de) * 2023-04-04 2024-10-10 Volkswagen Aktiengesellschaft Batteriezellenanordnung mit mindestens zwei Batteriezellen, insbesondere für ein Fahrzeug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943936A1 (de) * 1969-08-29 1971-03-18 Danfoss As Schutzanordnung fuer einen Verdichter
GB1527990A (en) * 1975-12-24 1978-10-11 Mitsubishi Heavy Ind Ltd Method for recovering a vapour
JPS57126590A (en) * 1981-01-29 1982-08-06 Matsushita Electric Ind Co Ltd Compressor
US4830277A (en) * 1988-04-20 1989-05-16 Demaich Industries, Inc. Thermostatic valve
DE4239580C2 (de) * 1992-11-25 1996-07-25 Samson Ag Stellantrieb mit Sicherheitseinrichtung
US5263643A (en) * 1992-12-24 1993-11-23 Therm-O-Disc, Incorporated Thermally responsive relief valve
US5571310A (en) * 1995-05-12 1996-11-05 Gilbarco Inc. Volatile organic chemical tank ullage pressure reduction

Also Published As

Publication number Publication date
DE19859752A1 (de) 2000-08-10
EP1013931A3 (fr) 2000-12-13
EP1013931B1 (fr) 2006-02-01
ATE317064T1 (de) 2006-02-15
DE59913096D1 (de) 2006-04-13
ES2257005T3 (es) 2006-07-16

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