DE924229C - Process for the manufacture of rotary pistons for Roots blowers - Google Patents
Process for the manufacture of rotary pistons for Roots blowersInfo
- Publication number
- DE924229C DE924229C DEH15184A DEH0015184A DE924229C DE 924229 C DE924229 C DE 924229C DE H15184 A DEH15184 A DE H15184A DE H0015184 A DEH0015184 A DE H0015184A DE 924229 C DE924229 C DE 924229C
- Authority
- DE
- Germany
- Prior art keywords
- manufacture
- roots blowers
- rotary pistons
- dimensional accuracy
- roots
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 238000007747 plating Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung der Drehkolben von Rootsgebläsen. Man kennt bereits. Rootsgebläse, welche mit aus Blech hergestellten Drehkolben ausgestattet sind. Bei den auf diese Weise ausgebildeten Roots:gebläsen ist der - Wirkungsgrad des. Gebläses in starkem Maße von der Maßgenauigkeit der Drehkolben abhängig. Mian hat diesle Maßhaltigkeit der Drehkolben, nur durch eine schwierige mechanische Bearbeitung erreichen können. Diese verteuerte naturgemäß die Kosten für die Gebläseherstellung, so daß der Anwendungsbereich derartiger Rootsgebläse biss zu einem gewissen Grad eingeschränkt war. Verwendete man, wie dies bei den üblichen Gebläsen üblich war, für die Herstellung der Drehkolben gezogene oder stranggepreßte .Profile, so reichte deren Herstellungsgenauigkeit nicht aus, um einen hohen Wirkungsgrad des Gebläses sicherzustellen.The invention relates to a method for producing the rotary lobes of roots blowers. You already know. Roots blower, which is made with sheet metal Rotary pistons are equipped. With the roots formed in this way: blown is the - efficiency of the. Fan to a large extent on the dimensional accuracy of the Rotary piston dependent. Mian has the same dimensional accuracy of the rotary lobes, only through one difficult mechanical processing can achieve. This naturally increased in price the cost of producing the blower, so that the scope of such Roots blowers was limited to a certain extent. If you used like this with the common blower was common for the manufacture of the rotary piston drawn or extruded .Profiles, their manufacturing accuracy was not sufficient to achieve a high degree of efficiency of the fan.
Daher wird nun erfindungsgemäß ein vorgezogenes oder s:tranggepreßtes Profilmaterial, welches die mit einem Zieh- oder Preßvorgang erreichbare Maßhaltigkeit aufweist, auf die für die Herstellung des Drehkolbens gewünschte Länge zugeschnitten. und in an sich bekannter Weise auf die für den Bau des Gebläses erforderliche Mlaßhaltigkeit durch galvanisch oder elektrolytisch aufgebrachten IMietallüberzug gebracht. Die Aufbringung des Überzuges erfolgt so., daß seine Dicke auf dem gezogenen Profil überall gleich ist. Vorzugsweise läßt sich dabei als überzugsmaterial ein verschleißfestes Mtterial verwenden, wodurch die Lebensdauer des Gebläses wesentlich erhöht werden kann. Der Erfindungsgedanke ist in der Zeichnung wiedergegeben, und zwar zeigt Mg. i einen Schnitt durch den Drehkolben eines Rootsgebläsesi und Fig. 2 eine Draufsicht auf den Drehkolben gemäß Fig. i.Therefore, according to the invention, a preferred or s: extruded Profile material that has the dimensional accuracy that can be achieved with a drawing or pressing process has, cut to the length desired for the manufacture of the rotary piston. and in a manner known per se on the dimensional accuracy required for the construction of the fan brought by galvanically or electrolytically applied metal coating. the The coating is applied so that its thickness is on the drawn profile is the same everywhere. A wear-resistant coating material can preferably be used as the coating material Use material, which increases the life of the blower significantly can. The idea of the invention is shown in the drawing, namely shows Mg. i shows a section through the rotary piston of a Roots blower i and FIG. 2 shows a plan view on the rotary piston according to FIG.
Wie insbesondere die Schnittdarstellung nach Fig. i deutlich erkennen läßt, besteht der Drehkolben aus dem vorgezogenen oder stranggepreßten Profilmaterial i, welches die sich aus einem Zieh-oder Preßvorgang ergebende Maßhaltigkeit aufweist. Dlas ;Material ist m.it einem galvanisch oder elektrolytisch aufgebrachten !Metallüberzug 2 versehen, der das Profilmaterial i allseitig überzieht und die Maßgenauigkeit des- Drehkolbens sicherstellt.As can be clearly seen in particular from the sectional view according to FIG lets, the rotary piston consists of the pre-drawn or extruded profile material i, which has the dimensional accuracy resulting from a drawing or pressing process. Dlas; material is with a galvanically or electrolytically applied! Metal coating 2, which covers the profile material i on all sides and the dimensional accuracy of the rotary piston ensures.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH15184A DE924229C (en) | 1953-01-29 | 1953-01-29 | Process for the manufacture of rotary pistons for Roots blowers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH15184A DE924229C (en) | 1953-01-29 | 1953-01-29 | Process for the manufacture of rotary pistons for Roots blowers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE924229C true DE924229C (en) | 1955-02-28 |
Family
ID=7147671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEH15184A Expired DE924229C (en) | 1953-01-29 | 1953-01-29 | Process for the manufacture of rotary pistons for Roots blowers |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE924229C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0281654A1 (en) * | 1987-03-11 | 1988-09-14 | Leybold Aktiengesellschaft | Two-shaft machine |
| DE4036698A1 (en) * | 1990-11-17 | 1992-05-21 | Pfeiffer Vakuumtechnik | Cooling system for rotary piston pump - uses evaporation of fluid injected int compression chamber |
-
1953
- 1953-01-29 DE DEH15184A patent/DE924229C/en not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0281654A1 (en) * | 1987-03-11 | 1988-09-14 | Leybold Aktiengesellschaft | Two-shaft machine |
| US4974318A (en) * | 1987-03-11 | 1990-12-04 | Leybold Aktiengesellschaft | Method of making a dual-shaft machine |
| DE4036698A1 (en) * | 1990-11-17 | 1992-05-21 | Pfeiffer Vakuumtechnik | Cooling system for rotary piston pump - uses evaporation of fluid injected int compression chamber |
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