EP1274939B1 - Messgaspumpe - Google Patents
Messgaspumpe Download PDFInfo
- Publication number
- EP1274939B1 EP1274939B1 EP01917019A EP01917019A EP1274939B1 EP 1274939 B1 EP1274939 B1 EP 1274939B1 EP 01917019 A EP01917019 A EP 01917019A EP 01917019 A EP01917019 A EP 01917019A EP 1274939 B1 EP1274939 B1 EP 1274939B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- piston rod
- crank mechanism
- measuring gas
- heat
- 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
Links
Images
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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
Definitions
- the invention relates to a sample gas pump with a Pump housing, a pump chamber located therein, of a working diaphragm is closed, which has a connecting rod is in drive connection with a crank mechanism, as well as with one provided in the upper region of the pump housing Heating device, wherein in the drive transmission range between diaphragm-side connecting rod and crank mechanism, for reducing the Heat transfer to the crank mechanism, the thermal conductivity reducing, in Pleuell horrsslegi spaced and in Circumferentially offset through holes are provided.
- US-A-4 790 730 From US-A-4 790 730 is already a Meßgaspumpe the the type mentioned above for conveying hot measuring gases, their working space a pump chamber final working over a Connecting rod is drivingly connected to a crank mechanism.
- the pump known from US-A-4 790 730 is in the upper part the pump housing, a heater provided. With help This heater should be the areas that are with the Measuring gas come on the approximately by the Withdrawal point of the gas to be measured given temperature held to a drop in the temperature of the Measuring gas in the area of the pump room to prevent and to a condensation of analysis gas components and a To avoid falsification of the measurement result.
- the object of the present invention is, to a large extent Avoiding the disadvantages described above, the heat transfer between the pump head and the crank mechanism, in particular the Reduce connecting rod bearings.
- Cooling fins provided as surface enlargement are those in the connecting rod, the crank-close Pleuelkopf are arranged, and that at least one Through hole to reduce the thermal conductivity and / or for dissipating the heat to the adjacent arranged cooling fins in the area between the cooling fins and the connecting rod bearing is provided.
- Sample gas pump are in the range between the Cooling fins and the connecting rod bearing also a through hole or multiple through holes to reduce the thermal conductivity and / or for dissipating the heat to the adjacent ones arranged cooling fins provided.
- the thermally conductive cross-sectional area reduced and on the other hand can through the holes an air circulation and thus a Heat dissipation can be achieved.
- a targeted leadership favoring the heat towards the cooling fins.
- the cooling through the cooling fins is through the crank or Eccentric movement particularly effective, so that in particular despite high temperatures in the region of the connecting rod head practically no increased temperature load of the Pleuellagers and its environment occurs.
- adjacent through holes are at 90 ° C to each other circumferentially offset and preferably have a center distance less than the diameter.
- the connecting rod is made of steel, in particular made of stainless steel.
- Stainless steel has compared to the otherwise most used Aluminum for the connecting rod has the advantage of lower Thermal conductivity with good strength properties.
- the measures according to one or more of claims 1 to 4 are preferably provided in a Meßgaspumpe, the one has at least the pump head cross-thermal insulation, the heat insulation essentially by a Insulating housing is formed, the inner wall of the formation a gas insulation layer is spaced from the pump head. Due to the effective isolation of the pump head can be practical no heat escape, so that in this case the invention Measures to reduce the heat conduction in the direction Rod bearing and crank mechanism is of particular importance.
- a sample gas pump 1 shown in Fig. 1 has a pump housing 2 with a pump chamber 3 located therein, on the one hand from a pump head cover 4 and on the other hand of a Working diaphragm 5 and a connecting rod 6 is completed.
- the working diaphragm 5 is on the outside edge between the pump head cover 4 and an annular housing part 7 and centrally clamped at the connecting rod 6 and one with the connecting rod 6 connected connecting rod 8 connected to a crank mechanism 9.
- the sample gas pump is a heated pump, the Having a heater in the pump head 10.
- This can be the Pump head, if necessary, be heated to several 100 ° C.
- cooling ribs 12 For heat radiation, an increase in surface area is provided by cooling ribs 12, at least in the crank drive-near region, which are arranged in the exemplary embodiment in the conical transition region of the connecting rod crank-near.
- an effective heat radiation is achieved in this area, and this can still be supported by preferably one or more further through holes 11a are provided between the cooling fins 12 and the connecting rod bearing.
- the through holes 11a are arranged so that a heat transfer to the adjacent cooling fins and there is a heat radiation, as indicated by the arrows in Figure 1.
- the measures described above for reducing the heat transfer from the pump head to the crank mechanism, are particularly effective advantageous in a Meßgaspumpe, which at least one Pump head has comprehensive thermal insulation, wherein the Heat insulation essentially by an insulating housing thirteenth is formed, the inner wall to form a gas insulation layer 14 is spaced from the pump head 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Reciprocating Pumps (AREA)
- Sampling And Sample Adjustment (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
- Fig. 1
- eine Längsschnittdarstellung einer Meßgaspumpe,
- Fig. 2
- einen Teilausschnitt eines Pleuels und
- Fig. 3
- eine Querschnittdarstellung eines Pleuels im Bereich einer Durchgangslochung.
Im Ausführungsbeispiel sind zwei benachbarte Durchgangslöcher 11 vorgesehen. Je nach Länge des Pleuels können aber auch mehr als zwei Durchgangslöcher 11 vorgesehen sein.
Die Kombination aus reduzierter Wärmeleitfähigkeit einerseits und erhöhter Wärmeabstrahlmöglichkeit andererseits ergibt auf dem Wärmeübertragungsweg zwischen Pumpenkopf 10 und Kurbeltrieb 9 eine starke Temperaturabsenkung, so daß an dem Pleuellager trotz hoher Betriebstemperaturen im Bereich des Pumpenkopfes 10 nur noch übliche und für das Pleuellager unschädliche Betriebstemperaturen auftreten.
Claims (5)
- Messgaspumpe (1) mit einem Pumpengehäuse (2), mit einem darin befindlichen Pumpenraum (3), der von einer Arbeitsmembran (5) abgeschlossenen ist, die über einen Pleuel (8) mit einem Kurbeltrieb (9) in Antriebsverbindung steht, sowie mit einer im oberen Bereich des Pumpengehäuses (2) vorsehenen Heizeinrichtung, wobei im Antriebs-Übertragungsbereich zwischen membranseitigem Pleuelkopf (6) und Kurbeltrieb (9), zur Reduzierung der Wärmeübertragung auf den Kurbeltrieb (9), die Wärmeleitfähigkeit reduzierende, in Pleuellängsrichtung beabstandete und in Umfangsrichtung versetzte Durchgangslöcher (11) vorgesehen sind, dadurch gekennzeichnet, daß zur Wärmeabstrahlung Kühlrippen (12) als OberflächenVergrößerung vorgesehen sind, die in dem die Pleuelstange aufnehmenden, Kurbeltrieb-nahen Pleuelkopf (6) angeordnet sind, und daß zumindest ein Durchgangsloch (11) zur Reduzierung der Wärmeleitfähigkeit und/oder zur Ableitung der Wärme zu den benachbart angeordneten Kühlrippen (12) im Bereich zwischen den Kühlrippen (12) und dem Pleuellager vorgesehen ist.
- Meßgaspumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Kühlrippen (12) im konischen Übergangsbereich des die Pleuelstange aufnehmenden, Kurbeltrieb-nahen Pleuelkopfs (6) angeordnet sind.
- Meßgaspumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß benachbarte Durchgangslöcher (11) um 90° zueinander umfangsversetzt sind und vorzugsweise einen Mittelabstand von weniger als dem Durchmesser aufweisen.
- Meßgaspumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Pleuel (8) aus Stahl, insbesondere aus Edelstahl, besteht.
- Meßgaspumpe, dadurch gekennzeichnet, daß die Maßnahmen gemäß einem oder mehreren der Ansprüche 1 bis 4 vorgesehen sind bei einer Meßgaspumpe (1) die eine zumindest den Pumpenkopf übergreifende Wärmeisolierung aufweist, wobei die Wärmeisolierung im wesentlichen durch ein Isolationsgehäuse (13) gebildet ist, dessen Innenwand zur Bildung einer Gasisolationsschicht zu dem Pumpenkopf (10) beabstandet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10019724 | 2000-04-20 | ||
DE10019724 | 2000-04-20 | ||
PCT/EP2001/002066 WO2001081762A1 (de) | 2000-04-20 | 2001-02-23 | Messgaspumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1274939A1 EP1274939A1 (de) | 2003-01-15 |
EP1274939B1 true EP1274939B1 (de) | 2005-10-19 |
Family
ID=7639535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01917019A Expired - Lifetime EP1274939B1 (de) | 2000-04-20 | 2001-02-23 | Messgaspumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US6827558B2 (de) |
EP (1) | EP1274939B1 (de) |
JP (1) | JP4550348B2 (de) |
DE (1) | DE50107750D1 (de) |
WO (1) | WO2001081762A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10231515C1 (de) * | 2002-07-12 | 2003-07-10 | Draeger Safety Ag & Co Kgaa | Steckadapter zur Gasprobenahme |
CN107636404B (zh) * | 2015-07-03 | 2020-03-27 | 三菱电机株式会社 | 热泵装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3526882A1 (de) | 1985-07-26 | 1987-01-29 | Otto Hayn | Gaspumpe oder -verdichter |
DE8602787U1 (de) | 1986-02-04 | 1986-03-13 | Becker, Erich, 7812 Bad Krozingen | Membranpumpe mit Wärmeisolierung |
DE3704700A1 (de) * | 1987-02-14 | 1988-08-25 | Bodenseewerk Geraetetech | Beheizbare membranpumpe fuer gase |
DE4322272C2 (de) * | 1993-07-05 | 1997-02-06 | Knf Neuberger Gmbh | Meßgaspumpe |
US5513956A (en) * | 1994-01-14 | 1996-05-07 | Arrow International Investment Corp. | Circulatory assisted device with motor driven gas pump |
-
2001
- 2001-02-23 DE DE50107750T patent/DE50107750D1/de not_active Expired - Lifetime
- 2001-02-23 JP JP2001578819A patent/JP4550348B2/ja not_active Expired - Fee Related
- 2001-02-23 WO PCT/EP2001/002066 patent/WO2001081762A1/de active IP Right Grant
- 2001-02-23 US US10/258,158 patent/US6827558B2/en not_active Expired - Lifetime
- 2001-02-23 EP EP01917019A patent/EP1274939B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP4550348B2 (ja) | 2010-09-22 |
US20030103851A1 (en) | 2003-06-05 |
WO2001081762A1 (de) | 2001-11-01 |
JP2003532007A (ja) | 2003-10-28 |
EP1274939A1 (de) | 2003-01-15 |
DE50107750D1 (de) | 2006-03-02 |
US6827558B2 (en) | 2004-12-07 |
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