CN101002022B - Single-winged vacuum pump - Google Patents

Single-winged vacuum pump Download PDF

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Publication number
CN101002022B
CN101002022B CN2005800270419A CN200580027041A CN101002022B CN 101002022 B CN101002022 B CN 101002022B CN 2005800270419 A CN2005800270419 A CN 2005800270419A CN 200580027041 A CN200580027041 A CN 200580027041A CN 101002022 B CN101002022 B CN 101002022B
Authority
CN
China
Prior art keywords
inserts
vacuum pump
relief opening
expulsion valve
oil outlet
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 - Fee Related
Application number
CN2005800270419A
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Chinese (zh)
Other versions
CN101002022A (en
Inventor
维利·施奈德
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.)
Joma Hydromechanic GmbH
Original Assignee
Joma Hydromechanic GmbH
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
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Publication of CN101002022A publication Critical patent/CN101002022A/en
Application granted granted Critical
Publication of CN101002022B publication Critical patent/CN101002022B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention relates to a single-winged vacuum pump provided with a pot-shaped housing (12), a rotor (18) which is mounted in a rotational and eccentric manner in the housing, a wing (20) which is displacably mounted in the rotor and which is orthogonal to the rotational axis, whereby the points of the wings are placed on the peripheral surface (22) which defines a work chamber (30) and which subdivides the work chamber into a suction chamber (40) and a pressure chamber (42), and the suction chamber is provided with an air inlet and the pressure chamber (42) is provided with an air outlet (48). The air outlet is arranged in the peripheral surface surrounding the pressure chamber (42).

Description

Single vane vacuum pump
Technical field
The present invention relates to a kind of single vane vacuum pump; It has cup-shaped shell, eccentricly is installed in rotor in the shell rotationally, is installed in the blade in the rotor movably perpendicular to rotatingshaft; The vane tip that this blade pass is crossed it abuts on the inner circumferential surface that limits working space; And working space is divided into suction chamber and pressure chamber in this case, and said suction chamber is provided with suction port, and said pressure chamber is provided with relief opening.
Background technique
Known vacuum pump with this spline structure.It has the wherein rotatable shell that rotor is installed usually, and its rotor is arranged in working space.Such vacuum pump is used for automobile in addition, the motor driven rotor rotation of automobile for example in automobile.This vacuum pump is through oil lubrication, and this oil is used to be sealed in the seal clearance between blade and the working space equally.Strive for exporting in the relief opening of the pressure chamber of the least possible oil from working space.
Summary of the invention
Therefore task of the present invention is, a kind of single vane vacuum pump is provided, and the air that wherein leaves pressure chamber is loaded by less oil.
Single vane vacuum pump according to the present invention has cup-shaped shell, eccentricly is installed in rotor in the shell rotationally, is installed in the blade in the rotor movably perpendicular to rotatingshaft; The vane tip that this blade pass is crossed it abuts on the inner circumferential surface that limits working space, and working space is divided into suction chamber and pressure chamber in this case, and said suction chamber is provided with suction port; Said pressure chamber is provided with relief opening; Said relief opening is arranged on the inner circumferential surface of pressure chamber, comprises also that wherein oil outlet, this oil outlet are located in the inner circumferential surface of said suction chamber; Also comprise the expulsion valve that is used for relief opening; The said expulsion valve that is used for relief opening is a leaf valve, and the back side of said expulsion valve is designed to put down and said leaf valve abuts on the edge of relief opening, also comprises the expulsion valve that is used for oil outlet; This expulsion valve that is used for oil outlet is directly connected in said oil outlet, and said two expulsion valves are made up of single part.
This task solves through the single vane vacuum pump that starts said type in the following manner according to the present invention, and promptly said relief opening is arranged on the inner circumferential surface of pressure chamber.
In single vane vacuum pump according to the present invention, relief opening is arranged in around the circumferential surface of pressure chamber rather than as existing technology, is positioned at the bottom of pressure chamber, and this pressure chamber is run through joint by rotor.Through the layout of relief opening on peripheral wall, following major advantage is provided, promptly the size of open cross-section can be than relief opening bigger that is arranged in the bottom.Therefore this pressure chamber emptying and need less energy to be used for extracting the air of drawing out apace from pressure chamber.In addition, the modification of the shape through pressure chamber causes little by little opening.So edge of opening for example is formed obliquely, so relief opening at first provides small cross section, and it is big that this cross section becomes gradually.Therefore avoid compression shock.
In an expansion scheme, propose, expulsion valve is directly connected in relief opening.This has following major advantage, i.e. the air dead band that can not be drawn out of, and for example the space between pressure chamber and inner circumferential surface and drain itself is limited to minimum.
Advantageously, said expulsion valve is arranged in the peripheral wall of said shell.This layout be save very much the space and avoid shell to be provided with supplementary equipment in the outside.
Advantageously, said expulsion valve is a leaf valve.Such valve is response fast, requires very little structure space and also cheap especially.If the back side of expulsion valve is designed to put down, so said leaf valve preferably abuts on the edge of exhaust port, and do not need for this reason special push auxiliary.Therefore this expulsion valve is closed in aspiration procedure and opens for exhausting air.
In a preferred embodiment, relief opening is provided with inserts, and the part that wherein said inserts constitutes the circumferential surface of pressure chamber perhaps is integrated in the casing wall.Can confirm the size of outlet valve and also confirm its shape in case of necessity through said inserts.In an inserts that is integrated in the casing wall, following possibility is provided, promptly exhaust port is passed in the passage, and this passage for example in axial direction leaves this shell.Radially or the air that leaves of tangential in inserts, turned to equally to vertically.This turns to passage to be arranged in inlet, and this inlet for example is a die castings, so this shell needs less processing charges.
One proposes according to modification of the present invention, in the circumferential surface of suction chamber, is being provided with an oil outlet.If rotor is owing to the reason of self always rotates backward, the lubricant oil of in suction chamber, assembling is so exported from this oil outlet, because this suction port prevents that through corresponding valve inhaled air and lubricant oil are discharged from again.This air and lubricant oil can overflow through oil outlet now.
Expulsion valve is directly connected in said oil outlet according to the present invention.This valve prevents, when pump is in normal operating condition following time, air and/or oil are inhaled into through this oil outlet.
Be arranged on according to expulsion valve according to the invention in the peripheral wall of said shell.Therefore can obtain aforesaid advantage for the expulsion valve of relief opening.Same this expulsion valve can be configured to leaf valve and advantageously the expulsion valve of oil outlet and the expulsion valve of relief opening are made up of single part.This single part with the leaf valve form for example is the plate of punching press, and this plate has two spring-latchs.
According to the present invention, said oil outlet is located in the inserts equally, and wherein said inserts constitutes the part of the said inner circumferential surface of working space or suction chamber.Therefore can draw, said inserts extends to the suction chamber from pressure chamber, and wherein said inserts advantageously stretches on the whole height of inner circumferential surface.Can also carry out the sealing of inner peripheral wall by means of this inserts in addition with respect to the best of rotor.In this case, said inserts is processed by flexible material, is made of plastics especially.
Said in this case inserts is as the support or the holding member that are used for expulsion valve, and wherein expulsion valve is arranged between inserts and the casing wall.Perhaps expulsion valve also can be arranged in the inserts, and wherein expulsion valve is for example sealed by the material pressure injection moulding of inserts.
From dependent claims and wherein described in detail the following description of a special preferred embodiment and can draw other advantages of the present invention, characteristic and details with reference to accompanying drawing.So it is illustrated in the accompanying drawings and can be independent or make up with any-mode in the feature essence of the present invention described in specification and the dependent claims.
Description of drawings
Shown in the drawings:
Fig. 1 illustrates the erection drawing of vacuum pump; And
Fig. 2 illustrates the perspective view of the shell that does not have rotor and blade, and is illustrated in two outlets in the peripheral wall.
Embodiment
In Fig. 1, represent vacuum pump, do not have the shell 12 of outer housing cover shown in it with reference character 10.This shell 12 has the inhalation interface 14 that leads in the inner chamber 16.In this inner chamber 16, be provided with wholely with 18 rotors represented, blade 20 is installed in this rotor perpendicular to running shaft 21 movably.Rotor 18 has rotor case 24, abuts in through this rotor of this rotor case on the inner circumferential surface 22 of working space 30.Rotor shaft 22 runs through splice enclosure 12, particularly runs through the bottom 26 that engages inner chamber 18 and outstanding from shell 12 overleaf through drive openings 28, so (by means of unshowned driver) rotates this rotor shaft.Drive openings 28 is provided with suitable sealing compound, so that oiling agent can not can not enter into inner chamber 16 from leaving inner chamber 16 and air and/or dirt.Said inner chamber 16 is divided into suction chamber 40 and pressure chamber 42 by blade 20.
This external Fig. 1 can find out that inserts 38 is arranged in the peripheral wall 36 of shell, and this inserts is positioned at from suction chamber 40 to pressure chamber on 42 the transition part.
This transition part is represented with reference character 44 in Fig. 2, and wherein the peripheral wall 46 at this columniform rotor case 24 in transition part 44 tops abuts on this inner circumferential surface 22.Can obviously find out, be provided with relief opening 48 and oil outlet 50 in this scope of the transition part 44 in inner circumferential surface 22.This relief opening 48 extends on the part height of inner circumferential surface 22, but it extends on the whole height of inner circumferential surface 22 equally or extends on the major component at this height at least.
In addition, this relief opening 48 along the circumferential direction extends and ends at the forward position (Stirnkante) 52 of inclination away from transition part 44.Therefore can avoid, relief opening 48 suddenly open or pressure chamber 42 is connected with relief opening 48 too soon, thereby can produce compression shock.Support little by little to open along the mode that the sense of rotation (according to the arrow 54 of Fig. 1) of blade 20 increases gradually with the radial depth of the passage of relief opening 48.
This relief opening 48 is passed in the inserts 38, and Fig. 2 illustrates this inserts above the opening that holds this inserts 38 56.The passage of relief opening 48 turns to downwards in inserts 38, so the gas of the discharge of shell 12 leaves along being directed downwards of axis of opening 56.
Between inserts 38 and relief opening 48, also be provided with valve body 58, in this valve body, be provided with expulsion valve 60.Valve body 58 has another expulsion valve 62, and this expulsion valve is assigned to oil outlet 50 and cuts out this oil outlet.Two expulsion valves 60 and 62 are configured to leaf valve and open two valves and therefore prevent through opening 48 and 50 suctions along the direction of inner chamber 16 along the direction of inserts 38.For positioning valve 58 accurately, inserts 38 has shape and the thickness notch 64 corresponding to valve body 58, and before inserts 38 was moved in the opening 56, valve body 58 can be inserted in this notch 64.
Through the relief opening 48 that in inner circumferential surface 22, is provided with, the size of this relief opening will be used to discharge desired torque with simple mode and be reduced to minimum being suitable for volume to be discharged aspect height and the length.Therefore reduce the power drain of vacuum pump 10.

Claims (13)

1. a single vane vacuum pump (10); It has cup-shaped shell (12), eccentricly is installed in rotor (18) in the shell (12) rotationally, is installed in the blade (20) in the rotor (18) movably perpendicular to rotatingshaft (21), and the vane tip that this blade pass is crossed it abuts on the inner circumferential surface (22) that limits working space (30), and working space (30) is divided into suction chamber (40) and pressure chamber (42) in this case; And said suction chamber (40) is provided with suction port; Said pressure chamber (42) is provided with relief opening (48), and said relief opening (48) is arranged on the inner circumferential surface (22) of pressure chamber (42), it is characterized in that; Also comprise oil outlet (50); This oil outlet is located in the inner circumferential surface (22) of said suction chamber (40), also comprises the expulsion valve (60) that is used for relief opening, and the said expulsion valve (60) that is used for relief opening is a leaf valve; The back side of said expulsion valve (60) is designed to put down and said leaf valve abuts on the edge of relief opening (48); Also comprise the expulsion valve (62) that is used for oil outlet, this expulsion valve that is used for oil outlet is directly connected in said oil outlet (50), and said two expulsion valves (60,62) are made up of single part.
2. single vane vacuum pump as claimed in claim 1 is characterized in that, the said expulsion valve (60) that is used for relief opening is directly connected in relief opening (48).
3. single vane vacuum pump as claimed in claim 2 is characterized in that, the said expulsion valve (60) that is used for relief opening is arranged on the peripheral wall (36) of said shell (12).
4. single vane vacuum pump as claimed in claim 1 is characterized in that, also comprises inserts (38), and said relief opening (48) is located in the said inserts (38), and said inserts (38) constitutes the part of said inner circumferential surface (22).
5. single vane vacuum pump as claimed in claim 4 is characterized in that, the said expulsion valve (60) that is used for relief opening is positioned between the peripheral wall (36) of said inserts (38) and shell.
6. single vane vacuum pump as claimed in claim 4 is characterized in that, the said expulsion valve (60) that is used for relief opening is integrated in said inserts (38).
7. single vane vacuum pump as claimed in claim 4 is characterized in that, said oil outlet (50) is located in another inserts (38) and said another inserts constitutes the part of said inner circumferential surface (22).
8. single vane vacuum pump as claimed in claim 1 is characterized in that, the said expulsion valve (62) that is used for oil outlet is arranged on the peripheral wall (36) of said shell (12).
9. like claim 1 or 8 described single vane vacuum pumps, it is characterized in that the said expulsion valve (62) that is used for oil outlet is a leaf valve.
10. single vane vacuum pump as claimed in claim 7 is characterized in that, the said expulsion valve (62) that is used for oil outlet is positioned between the peripheral wall (36) of said another inserts (38) and shell.
11. single vane vacuum pump as claimed in claim 7 is characterized in that, the said expulsion valve (62) that is used for oil outlet is integrated in said another inserts (38).
12. single vane vacuum pump as claimed in claim 7 is characterized in that, said two inserts integrally constitute.
13., it is characterized in that said inserts (38) is made of plastics like claim 4 or 7 or 12 described single vane vacuum pumps.
CN2005800270419A 2004-07-09 2005-04-20 Single-winged vacuum pump Expired - Fee Related CN101002022B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004034926.6 2004-07-09
DE102004034926A DE102004034926B3 (en) 2004-07-09 2004-07-09 A single-blade
PCT/EP2005/004212 WO2006005383A1 (en) 2004-07-09 2005-04-20 Single-winged vacuum pump

Publications (2)

Publication Number Publication Date
CN101002022A CN101002022A (en) 2007-07-18
CN101002022B true CN101002022B (en) 2012-06-06

Family

ID=34966845

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2005800270419A Expired - Fee Related CN101002022B (en) 2004-07-09 2005-04-20 Single-winged vacuum pump

Country Status (6)

Country Link
EP (1) EP1766239B1 (en)
KR (1) KR20070034090A (en)
CN (1) CN101002022B (en)
CA (1) CA2575780C (en)
DE (2) DE102004034926B3 (en)
WO (1) WO2006005383A1 (en)

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DE102010007255A1 (en) 2010-02-09 2011-08-11 Bayerische Motoren Werke Aktiengesellschaft, 80809 Fluid pump for use in machine housing, has rotary shaft arranged in fluid delivery volume, where impeller is arranged at shaft
DE102010044898A1 (en) * 2010-09-09 2012-03-15 Schwäbische Hüttenwerke Automotive GmbH Vacuum pump with ventilation device
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Publication number Publication date
DE102004034926B3 (en) 2005-12-29
CA2575780C (en) 2015-07-07
EP1766239B1 (en) 2008-12-03
DE502005006154D1 (en) 2009-01-15
CN101002022A (en) 2007-07-18
EP1766239A1 (en) 2007-03-28
CA2575780A1 (en) 2006-01-19
KR20070034090A (en) 2007-03-27
WO2006005383A1 (en) 2006-01-19

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