WO2001081763A1 - Messgaspumpe - Google Patents
Messgaspumpe Download PDFInfo
- Publication number
- WO2001081763A1 WO2001081763A1 PCT/EP2001/002065 EP0102065W WO0181763A1 WO 2001081763 A1 WO2001081763 A1 WO 2001081763A1 EP 0102065 W EP0102065 W EP 0102065W WO 0181763 A1 WO0181763 A1 WO 0181763A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connecting rod
- heat
- sample gas
- insulation
- pump
- Prior art date
Links
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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
Definitions
- the invention relates to a sample gas pump with a pump housing, a pump chamber located therein, which is closed off by a working membrane which is connected to a crank mechanism via a connecting rod or similar lifting element, a heating device being provided in the upper region of the pump housing, in particular in the pump head and wherein thermal insulation is provided that extends beyond at least the pump head.
- Pumps of this type are used to convey hot measuring gases, the temperature of which should be maintained as far as possible in the removal state. Condensation of analysis gas components and falsification of the measurement result should be avoided.
- a heater is provided in the pump head in order to reduce the temperature of the gas to be measured in the area to prevent or at least reduce the pump chamber.
- the object of the present invention is to further reduce the heat radiation from the pump head to the outside and to improve the uniform temperature distribution in the region of the pump head.
- the heat insulation is essentially formed by an insulation housing, the inner wall of which is spaced apart to form a ( gas insulation layer from the pump head.
- the gas or air jacket formed between the pump head and the inside of the insulation housing forms an effective intermediate insulation layer, which significantly reduces heat radiation to the outside, and this more effective insulation results in improved heat distribution in the area of the pump head.
- the inner wall of the insulation housing advantageously has a heat-insulating layer, preferably made of glass fiber material or similar heat-resistant material. This layer in combination with the air intermediate insulation layer results in particularly good thermal insulation.
- the inner wall of the insulation housing can be designed to reflect heat rays, preferably by a highly polished reflection layer, in particular made of stainless steel, or by the heat-insulating layer carrying such a reflection layer on the inside.
- the reflection layer can thus either be provided directly on the inside of the insulation housing or on the inside on the layer which is additionally provided, if appropriate.
- a preferred embodiment provides that the insulation housing is sandwich-like and on the inside has a metal hood, preferably made of stainless steel, which is kept at a distance from the pump head, then has a heat-resistant heat-insulation layer on the outside and a heat-insulating layer preferably made of plastic as the outer layer.
- This construction of the insulation housing results on the one hand on the inside good resistance even at high operating temperatures of the pump, very good insulation values and good dimensional stability.
- the insulation housing expediently surrounds at least the pump head on all sides, through openings being provided at least for pressure and suction feed lines and for the connecting rod. This forms an insulation that practically encompasses the pump head.
- the heating provided in the area of the pump head has the undesirable side effect that heating of the diaphragm-side connecting rod head and, via the connecting rod, heating of the crank mechanism also occur, the connecting rod bearing in particular being able to be damaged.
- This effect is particularly evident in the particularly effective insulation of the pump head by the gas insulation layer.
- through-holes are provided in the drive transmission area between the connecting rod end and the crank mechanism, on the one hand reducing the thermal conductivity, spaced in the longitudinal direction and offset in the circumferential direction, and on the other hand, for heat radiation, at least in the area near the crank mechanism.
- the cooling by the cooling fins is particularly effective due to the crank or eccentric movement, so that, in particular despite high temperatures in the area of the connecting rod head, there is practically no increased thermal stress on the connecting rod bearing and its surroundings.
- Adjacent through holes are preferably offset circumferentially from one another by 90 ° C. and preferably have a center distance of less than the diameter. Due to this lateral offset of the holes in the longitudinal direction of the connecting rod, the holes interlock and thereby result in particularly good ventilation and cooling in this area as well, but the strength of the connecting rod is largely retained.
- one or more through holes can be provided in the connecting rod head near the crank mechanism, preferably in the area between the cooling ribs and the connecting rod bearing, to reduce the thermal conductivity and / or to dissipate the heat, in particular to the adjacent cooling ribs. On the one hand, this reduces the heat-conducting cross-sectional area, and on the other hand, air circulation and thus heat dissipation can also be achieved through the holes. In addition, a targeted guidance of the heat to the cooling fins is favored.
- the connecting rod is advantageously made of steel, in particular stainless steel.
- Stainless steel has the advantage of lower thermal conductivity and good strength properties compared to the aluminum that is usually used for the connecting rod.
- Fig. 2 shows a partial section of a connecting rod
- Fig. 3 is a cross-sectional view of a connecting rod in the area of a through hole.
- a measuring gas pump 1 shown in FIG. 1 has a pump housing 2 with a pump chamber 3 located therein, which is closed on the one hand by a pump head cover 4 and on the other hand by a working diaphragm 5 and a connecting rod head 6.
- the working diaphragm 5 is clamped on the outer edge side between the pump head cover 4 and an annular housing part 7 and centrally at the connecting rod head 6 and is connected to a crank mechanism 9 via a connecting rod 8 connected to the connecting rod head 6.
- the sample gas pump is a heated pump which has a heating device in the pump head 10. This allows the pump head to be heated to several 100 ° C if necessary.
- an insulation housing 13 is provided, the inner wall 15 of which is spaced apart from the pump head 10 to form a gas insulation layer 14.
- the inner wall of the insulation housing 13 is additionally provided with a heat-resistant heat insulation layer 16, preferably made of glass fiber material, the inside of which forms the inner wall 15 spaced apart from the pump head.
- This inner wall 15 of the insulation housing is provided with a heat radiation-reflecting reflection layer in order to improve the insulation overall.
- the reflection layer is formed in particular by a highly polished reflection layer, preferably made of stainless steel. If no layer 16 is provided, the reflection layer can also be located directly on the inside of the insulation housing 13 be upset.
- the insulation housing 13 is sandwich-like and on the inside a metal hood, preferably made of stainless steel, spaced from the pump head 6, then a heat-resistant heat insulation layer 16 on the outside and a heat-insulating plastic layer as the outer layer, which then covers the outer hood of the insulation housing 13 forms, has.
- the insulation housing encloses at least the pump head on all sides, with passage openings being provided at least for pressure and suction feed lines and for the connecting rod 8.
- measures for reducing the heat transfer to the crank mechanism 9 are provided in the area of the drive transmission.
- through holes 11 are provided which are spaced in the longitudinal direction of the connecting rod and offset in the circumferential direction. As can clearly be seen in the enlarged illustration according to FIG. 2, adjacent through holes 11 are circumferentially offset from one another by 90 ° and have a center distance of less than the hole diameter. The perforated channels are thus connected. As a result, on the one hand the thermal conductivity of the connecting rod 8 is reduced and the through holes 11 furthermore promote good ventilation and thus heat dissipation. Due to the offset of the through holes 11 and the connection of their channels, good strength values are obtained in spite of the reduction in thermal conductivity achieved and the increased heat radiation.
- two adjacent through holes 11 are provided. Depending on the length of the connecting rod, more can be done be provided as two through holes 11.
- a surface enlargement by cooling fins 12 is provided at least in the area near the crank drive, which in the exemplary embodiment are arranged in the conical transition area of the connecting rod head near the crank drive. Effective heat radiation is thus achieved in this area, which can be further supported by preferably providing one or more further through holes 11a between the cooling fins 12 and the connecting rod bearing.
- the through holes 11a are arranged such that heat is also conducted to the adjacent cooling fins and there is heat radiation, as indicated by the arrows in FIG. 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Reciprocating Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50112642T DE50112642D1 (de) | 2000-04-20 | 2001-02-23 | Messgaspumpe |
JP2001578820A JP4588962B2 (ja) | 2000-04-20 | 2001-02-23 | 被測定ガス用ポンプ |
EP01911693A EP1274940B1 (de) | 2000-04-20 | 2001-02-23 | Messgaspumpe |
US10/258,095 US6863508B2 (en) | 2000-04-20 | 2001-02-23 | Measuring gas pump with heated and insulated pump head |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10019725.6 | 2000-04-20 | ||
DE10019725A DE10019725C1 (de) | 2000-04-20 | 2000-04-20 | Meßgaspumpe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001081763A1 true WO2001081763A1 (de) | 2001-11-01 |
Family
ID=7639536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/002065 WO2001081763A1 (de) | 2000-04-20 | 2001-02-23 | Messgaspumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US6863508B2 (de) |
EP (1) | EP1274940B1 (de) |
JP (1) | JP4588962B2 (de) |
DE (2) | DE10019725C1 (de) |
WO (1) | WO2001081763A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7536943B2 (en) * | 2005-02-09 | 2009-05-26 | Edward Pritchard | Valve and auxiliary exhaust system for high efficiency steam engines and compressed gas motors |
US8459098B2 (en) * | 2009-01-20 | 2013-06-11 | The United States of America, as represented by the Secretary of the Department of Health and Human Services, Centers for Disease Control and Prevention | Universal physiologic sampling pump (PSP) capable of rapid response to breathing |
CN104348287A (zh) * | 2013-08-09 | 2015-02-11 | 德昌电机(深圳)有限公司 | 离心泵及应用该离心泵的厨卫用具 |
CN106401940B (zh) * | 2016-10-19 | 2018-07-10 | 珠海格力电器股份有限公司 | 水泵保温装置 |
EP3382203B1 (de) | 2017-03-30 | 2024-05-15 | Roper Pump Company LLC | Exzenterschneckenpumpe mit integriertem heizmantel |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51118104A (en) * | 1975-04-10 | 1976-10-16 | Dainippon Seiki:Kk | Pumping apparatus |
JPS5218209A (en) * | 1975-08-01 | 1977-02-10 | Iwaki:Kk | Compressor and suction pump with a heat insulating device |
DE8602787U1 (de) * | 1986-02-04 | 1986-03-13 | Becker, Erich, 7812 Bad Krozingen | Membranpumpe mit Wärmeisolierung |
US4716926A (en) * | 1986-02-22 | 1988-01-05 | Ludwig Jacobs | Housing for heat insulating armatures and/or flange connectors |
US4790730A (en) * | 1987-02-14 | 1988-12-13 | Bodenseewek Geratetechnik Gmbh | Heatable diaphragm pump for gases |
DE4322272A1 (de) * | 1993-07-05 | 1995-01-12 | Knf Neuberger Gmbh | Meßgaspumpe |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3738035A (en) * | 1971-01-25 | 1973-06-12 | A Bricker | Lighted display |
DE3526882A1 (de) * | 1985-07-26 | 1987-01-29 | Otto Hayn | Gaspumpe oder -verdichter |
DE3741145A1 (de) * | 1987-12-04 | 1989-06-15 | Deutsche Forsch Luft Raumfahrt | Aufbereitungssystem fuer fluessigwasserstoff |
US5407000A (en) * | 1992-02-13 | 1995-04-18 | The Dow Chemical Company | Method and apparatus for handling molten metals |
JP3341910B2 (ja) * | 1992-11-16 | 2002-11-05 | 株式会社ユニシアジェックス | 液体水素ポンプ |
US5465581A (en) * | 1993-08-24 | 1995-11-14 | Hewlett-Packard | Analytical system having energy efficient pump |
JP3216672B2 (ja) * | 1993-10-13 | 2001-10-09 | 株式会社荏原製作所 | 誘導電動機付流体機械 |
US5865092A (en) * | 1997-07-03 | 1999-02-02 | Woudwyk; Anthony D. | Engine connecting rod and double piston assembly |
DE19854719B4 (de) * | 1998-11-26 | 2008-10-16 | Continental Teves Ag & Co. Ohg | Kolbenpumpe |
-
2000
- 2000-04-20 DE DE10019725A patent/DE10019725C1/de not_active Expired - Lifetime
-
2001
- 2001-02-23 EP EP01911693A patent/EP1274940B1/de not_active Expired - Lifetime
- 2001-02-23 JP JP2001578820A patent/JP4588962B2/ja not_active Expired - Lifetime
- 2001-02-23 US US10/258,095 patent/US6863508B2/en not_active Expired - Lifetime
- 2001-02-23 DE DE50112642T patent/DE50112642D1/de not_active Expired - Lifetime
- 2001-02-23 WO PCT/EP2001/002065 patent/WO2001081763A1/de active IP Right Grant
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51118104A (en) * | 1975-04-10 | 1976-10-16 | Dainippon Seiki:Kk | Pumping apparatus |
JPS5218209A (en) * | 1975-08-01 | 1977-02-10 | Iwaki:Kk | Compressor and suction pump with a heat insulating device |
DE8602787U1 (de) * | 1986-02-04 | 1986-03-13 | Becker, Erich, 7812 Bad Krozingen | Membranpumpe mit Wärmeisolierung |
US4716926A (en) * | 1986-02-22 | 1988-01-05 | Ludwig Jacobs | Housing for heat insulating armatures and/or flange connectors |
US4790730A (en) * | 1987-02-14 | 1988-12-13 | Bodenseewek Geratetechnik Gmbh | Heatable diaphragm pump for gases |
DE4322272A1 (de) * | 1993-07-05 | 1995-01-12 | Knf Neuberger Gmbh | Meßgaspumpe |
DE4322272C2 (de) | 1993-07-05 | 1997-02-06 | Knf Neuberger Gmbh | Meßgaspumpe |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 001, no. 071 (M - 025) 11 July 1977 (1977-07-11) * |
Also Published As
Publication number | Publication date |
---|---|
JP4588962B2 (ja) | 2010-12-01 |
DE50112642D1 (de) | 2007-08-02 |
DE10019725C1 (de) | 2001-12-06 |
US20030077186A1 (en) | 2003-04-24 |
JP2003532059A (ja) | 2003-10-28 |
EP1274940B1 (de) | 2007-06-20 |
US6863508B2 (en) | 2005-03-08 |
EP1274940A1 (de) | 2003-01-15 |
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