EP1948930A1 - Kompressoranordnung mit bypassmitteln zur vermeidung eines einfrierens der kühleinheit - Google Patents
Kompressoranordnung mit bypassmitteln zur vermeidung eines einfrierens der kühleinheitInfo
- Publication number
- EP1948930A1 EP1948930A1 EP06818455A EP06818455A EP1948930A1 EP 1948930 A1 EP1948930 A1 EP 1948930A1 EP 06818455 A EP06818455 A EP 06818455A EP 06818455 A EP06818455 A EP 06818455A EP 1948930 A1 EP1948930 A1 EP 1948930A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit
- compressor
- bypass
- cooling
- bypass tube
- 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
Links
- 238000007710 freezing Methods 0.000 title claims abstract description 13
- 230000008014 freezing Effects 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 51
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000002194 freeze distillation Methods 0.000 claims description 3
- 101100495769 Caenorhabditis elegans che-1 gene Proteins 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F04B39/068—Cooling; Heating; Prevention of freezing 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
- F04B25/00—Multi-stage pumps
-
- 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
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/6416—With heating or cooling of the system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87338—Flow passage with bypass
- Y10T137/87362—Including cleaning, treating, or heat transfer feature
Definitions
- Compressor arrangement with bypass means to prevent freezing of the cooling unit
- the present invention relates to a compressor arrangement for generating compressed air by means of a motor-driven compressor unit, which is followed by at least one cooler unit for cooling the generated compressed air, which enters the cooler unit via at least one inlet, flows there through a cooling air-circulated cooling structure of a plurality of parallel-connected cooling channels and the cooler unit via at least one outlet, with bypass means being provided between the inlet and the outlet of the cooler unit. avoiding freezing of the cooler unit are provided at low ambient temperatures.
- the field of application of the present invention extends primarily to oil-free piston compressors, which are used for the production of compressed air, for example in commercial and rail vehicle construction.
- the compressor assembly must operate over a temperature range of -50 ° C to + 50 ° C ambient temperature. Since the cooler design also provides a maximum cooling capacity at +50 0 C, under specific environmental conditions - for example, 100% humidity, - 20 ° C ambient temperature and 50% duty cycle - icing of the cooling channels can be observed within the cooler unit of the compressor assembly. During the operation of the compressor unit, this icing may even progress over a period of several hours to the extent that sufficient air demand is no longer possible and the compressor arrangement finally fails.
- US Pat. No. 6,952,932 B2 discloses a cooler unit for a compressor arrangement, in which the above-described problem is solved in that not all of the compressed air heated by the upstream compressor unit passes through the cooling air-circulated cooling structure, but rather a part of the heated compressed air is supplied via a bypass line to the Cooling structure is passed over directly to the outlet, where it mixes with the cooled by the cooling structure of compressed air.
- a bypass line mixing valve is required, which is operated in accordance with an electronic control to mix depending on the ambient temperature hot compressed air with cooled compressed air.
- valve and control technology causes a corresponding equipment expense.
- interruption of the power supply for the control electronics or wear a seal in the valve could freeze the cooling unit unhindered until its destruction.
- this solution is primarily for protecting the units downstream of the cooler unit from icing.
- the invention includes the technical teaching that is provided as a bypass means only a permanently open bypass pipe without any lying in the compressed air flow valves between the region of the inlet and the region of the outlet of the cooler unit.
- the internal cross section of the bypass tube is matched to the capacity of the compressor unit and to the pressure difference between the inlet and outlet so that the bypass tube causes a higher flow resistance than the cooling structure at normal ambient temperatures. Normal ambient temperatures are primarily temperatures above freezing. At temperatures below freezing and progressive freezing of the cooling structure, however, the compressed air increasingly flows over the bypass tube.
- the advantage of the solution according to the invention is, in particular, that via this specially dimensioned bypass tube the pressure generation can be maintained in the event of a freezing of the cooler unit with minimal loss of cooling and conveying capacity.
- the solution according to the invention has an independent control activity based on the dimensioning of the bypass tube.
- the bypass pipe is designed such that the outlet temperature (measured after the radiator unit) is limited so that the function downstream devices - such as air dryer, control valves - is not affected.
- the bypass tube according to the invention is to be dimensioned to achieve optimum function such that in the case of a frozen cooler unit, which no longer blows compressed air, the pressure difference between the two ends of the bypass tube increases to a maximum of 0.5 bar.
- a pressure drop is quite acceptable as a minimal loss of capacity.
- bypass tube provision is made for the bypass tube to have screw connections at both ends with which a detachable fastening can be attached. tion of the bypass tube can be done on the radiator unit.
- the bypass tube is totally integrated in the cooler unit, for example by soldering or welding.
- the bypass tube itself is a tube made of steel or a light metal, which can be used on a normalized semi-finished, for example, a tube with the basic dimensions of 10 x 1.5 mm.
- bypass pipe is provided with cooling fins or cooling fins or is designed in the manner of a finned tube in order to improve the cooling effect, if necessary.
- the bypass tube can be designed as a casting-produced hollow body, or contain such.
- steel and non-metallic materials for production are conceivable, provided that they are sufficiently temperature resistant and pressure resistant.
- the bypass pipe is designed as a hose line, or includes such.
- the bypass tube is arranged relative to the cooler unit in such a way that it lies in the flow of the cooling air flowing through the cooler unit. This ensures that the bypass tube exerts a minimum cooling effect on the compressed air flowing through it.
- the bypass tube can be arranged either vertically or horizontally relative to the radiator unit and run straight. If the self-cooling effect of the bypass tube is not sufficient for a straight course, the bypass tube can alternatively be performed in the manner of a coil or the like.
- the solution according to the invention is suitable for use in both single-stage and multi-stage compressor units.
- the cooler unit is provided as an aftercooler, which can then be equipped with at least one bypass pipe according to the invention.
- each individual compressor stage is provided with a downstream cooler unit in the form of an intermediate or aftercooler, wherein each cooling unit is associated with at least one bypass tube.
- the at least one associated bypass pipe is preferably designed such that even with a totally frozen cooler unit, the entire capacity of the upstream compressor unit via the at least one associated bypass pipe is conductive.
- FIG. 1 is a perspective external view of a compressor assembly
- FIG.l A schematic representation of bypass means on the radiator unit of the compressor assembly according to Fig.1.
- Fig.l consists of a compressor assembly of a driven by an electric motor 1 multi-stage compressor unit 2 for generating compressed air.
- 3 air is sucked from the environment via a filter unit.
- Each compressor stage of the compressor unit 2 is assigned its own cooler unit 4a and 4b, which serve for cooling the compressed air generated in the respective upstream compressor stage.
- the first compressor stage downstream cooler unit 4a as intercooler and a second compressor stage of the compressor unit 2 downstream cooler unit 4b is to be referred to as aftercooler.
- Each radiator unit 4a and 4b has an inlet 5 for incoming heated compressed air.
- the heated compressed air passes for cooling via a cooling air flowed around cooling structure 6, which - in a conventional manner - from a plurality of parallel-connected cooling channels of smaller diameter flows to leave the cooler unit 4a or 4b via an outlet 7 again.
- the cooling air for flowing around the cooling structure 6 is generated via a motor or shaft-driven fan wheel 8 arranged between the cooler units 4 a and 4 b and the compressor unit 2.
- the cooler unit 4 a shown here by way of example has a bypass pipe 9 between the inlet 5 and the outlet 7 in order to avoid freezing of the cooler unit 4 a at low ambient temperatures.
- the continuous, permanently open bypass pipe 9 is characterized by an internal cross-section, which is matched to the capacity of the compressor unit 2 and the pressure difference between inlet 5 and outlet 7 such that the bypass pipe 9 causes a higher flow resistance than the cooling structure 6 at normal ambient temperatures, whereas with progressive freezing of the cooling structure 6 as a result of crystal attachment to the wall and inner disks, the compressed air increasingly flows via the bypass pipe 9. It has been shown that the bypass pipe 9 does not freeze itself under these conditions, since it is heated up quickly by the compressed air itself and its flow friction in the bypass pipe 9. Thus, the compressed air generation is maintained with minimal loss of cooling and delivery.
- the bypass pipe 9 is designed here as a horizontal straight pipe, which lies in the flow of cooling air flowing through the cooler unit 4 a, in order to cool the bypass pipe 9 as well.
- a safety valve 10 is inserted, which opens from a defined pressure value to prevent bursting of the bypass tube 9.
- the bypass tube 9 in the interior can also have surface and cross-sectional changes to achieve a nozzle function, if flow dynamic sense.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200510053949 DE102005053949B3 (de) | 2005-11-11 | 2005-11-11 | Kompressoranordnung mit Bypassmitteln zur Vermeidung eines Einfrierens der Kühleinheit |
| PCT/EP2006/010780 WO2007054328A1 (de) | 2005-11-11 | 2006-11-10 | Kompressoranordnung mit bypassmitteln zur vermeidung eines einfrierens der kühleinheit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1948930A1 true EP1948930A1 (de) | 2008-07-30 |
| EP1948930B1 EP1948930B1 (de) | 2016-07-06 |
Family
ID=37111720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06818455.5A Not-in-force EP1948930B1 (de) | 2005-11-11 | 2006-11-10 | Kompressoranordnung mit bypassmitteln zur vermeidung eines einfrierens der kühleinheit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9022068B2 (de) |
| EP (1) | EP1948930B1 (de) |
| DE (1) | DE102005053949B3 (de) |
| WO (1) | WO2007054328A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013007186A1 (de) * | 2013-04-25 | 2014-10-30 | Man Truck & Bus Ag | Leitungssystem für ein Kraftfahrzeug |
| DE102014113598A1 (de) * | 2014-09-19 | 2016-03-24 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Mehrstufiger Kolbenkompressor mit einer äußeren Kühlluftführung |
| DE102016011032B4 (de) | 2016-09-13 | 2023-12-28 | Zf Cv Systems Hannover Gmbh | Druckversorgungseinheit eines Kraftfahrzeugs |
| JP2019108811A (ja) * | 2017-12-15 | 2019-07-04 | 工機ホールディングス株式会社 | 気体圧縮機 |
| US11681309B2 (en) * | 2019-01-03 | 2023-06-20 | Westinghouse Air Brake Technologies Corporation | Thermal management system and method |
| CN112412789B (zh) * | 2019-08-23 | 2022-09-06 | 广东美芝制冷设备有限公司 | 压缩机及冷冻循环装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3232340A (en) * | 1963-03-26 | 1966-02-01 | Schramm Inc | Air supply system |
| DE3307064A1 (de) * | 1983-03-01 | 1984-09-06 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Druckluftverdichter mit mindestens einer verdichterstufe, insbesondere fuer hochspannungsleistungsschalter |
| GB9324723D0 (en) * | 1993-12-02 | 1994-01-19 | Amot Controls Ltd | Turbocharger control apparatus |
| US5623834A (en) * | 1995-05-03 | 1997-04-29 | Copeland Corporation | Diagnostics for a heating and cooling system |
| DE19600377B4 (de) * | 1995-12-14 | 2005-10-27 | Wabco Gmbh & Co.Ohg | Druckgasanlage mit einem Gastrockner |
| US6283725B1 (en) * | 1997-07-21 | 2001-09-04 | Westinghouse Air Brake Company | Aftercooler bypass means for a locomotive compressed air system |
| US6027311A (en) * | 1997-10-07 | 2000-02-22 | General Electric Company | Orifice controlled bypass system for a high pressure air compressor system |
| US6167956B1 (en) * | 1999-08-24 | 2001-01-02 | Westinghouse Air Brake Company | Aftercooler having bypass passage integrally formed therewith |
| US6604515B2 (en) * | 2001-06-20 | 2003-08-12 | General Electric Company | Temperature control for turbocharged engine |
-
2005
- 2005-11-11 DE DE200510053949 patent/DE102005053949B3/de not_active Expired - Fee Related
-
2006
- 2006-11-10 US US12/093,156 patent/US9022068B2/en not_active Expired - Fee Related
- 2006-11-10 EP EP06818455.5A patent/EP1948930B1/de not_active Not-in-force
- 2006-11-10 WO PCT/EP2006/010780 patent/WO2007054328A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007054328A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005053949B3 (de) | 2006-11-09 |
| WO2007054328A1 (de) | 2007-05-18 |
| EP1948930B1 (de) | 2016-07-06 |
| US20090151794A1 (en) | 2009-06-18 |
| US9022068B2 (en) | 2015-05-05 |
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