GB2383611A - Rotary vane-type machine - Google Patents
Rotary vane-type machine Download PDFInfo
- Publication number
- GB2383611A GB2383611A GB0223251A GB0223251A GB2383611A GB 2383611 A GB2383611 A GB 2383611A GB 0223251 A GB0223251 A GB 0223251A GB 0223251 A GB0223251 A GB 0223251A GB 2383611 A GB2383611 A GB 2383611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vane
- type machine
- rotary vane
- kidney
- under
- 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
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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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
- F01C21/0818—Vane tracking; control therefor
- F01C21/0854—Vane tracking; control therefor by fluid means
- F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
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- 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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3446—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 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 more than one line or surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
A rotary vane-type machine which has a rotor mounted inside a cylindrical displacement chamber between two end plates. The vanes are radially displaceable in slits formed in the circumferential surface of the rotor in order to deliver fluid from a suction area into a pressure area. There is at least one kidney-shaped suction port 18,19 and at least one kidney-shaped pressure port 14,15 which are formed in one of the end plates 1. Radially inside the region between the suction port 18,19 and the pressure port 14,15 there are under-vane grooves 22,23,26,27 which are connected to under-vane chambers which are provided in the slits. The under-vane groove disposed in the region of the pressure port is connected to the pressure pod and the under-vane groove disposed in the region of the suction port is connected to the pressure chamber of an additional delivery device 36. The additional delivery device may be a vane-type, gear or gerotor pump.
Description
238361 1
- 1 - ROTARY VANE-TYPE MACHINE
The invention relates to a rotary vane-type machine more particularly vane-type pump with a rotor driven by a drive 5 shaft and mounted rotatable inside a cylindrical displacement chamber between two end plates and in whose circumferential surface there are substantially radially aligned slits in which vanes are mounted radially displaceable in order to deliver fluid from at least one lo suction area into at least one pressure area whereby the suction area is connected to at least one kidney-shaped suction port and the pressure area is connected to at least one kidney-shaped pressure port which are formed in one of the end plates in which radially inside the area 15 between the kidney-shaped suction port and kidney-shaped pressure port there are the under-vane grooves which are connected to under-vane chambers which are provided in the slits whereby the under-vane groove disposed in the region of the kidney- shaped pressure port. is connected to the 20 kidney-shaped pressure port.
Rotary vane-type machines of the kind mentioned here are used for example in power assisted steering systems and deliver a special fluid, for example oil, in order to 25 assist the steering forces which are to be applied to the steering wheel, for example a motor vehicle. With electrically operated power steering pumps the operating point with the maximum power is the design point for the electric motor. The structural size of the electric motor 30 has a considerable influence on the costs of the overall assembly. Improving the degree of efficiency of the pump P3622P3
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- 2 makes it possible to use larger pumps with smaller electric motors.
The object of the invention is to provide a rotary vane-
5 type machine of the type already described which has a better degree of efficiency than conventional rotary vane-
type machines.
The object is achieved with rotary vane-type machines, 10 more particularly a vane-type pump, with a rotor which is driven by a drive shaft and which is mounted rotatable inside a cylindrical displacement chamber between two end plates and in whose circumferential surface are provided two radially aligned slits in which vanes are mounted 15 radially displaceable in order to deliver fluid from at least a suction area into at least a pressure area wherein the suction area is connected to at least one kidney-
shaped suction port and the pressure area is connected to at least one kidney-shaped pressure port which are formed 20 in one of the end plates in which radially inside the region between the kidney-shaped suction port and the kidney-shaped pressure port there are under-vane grooves which connect with the under-vane chambers which are provided in the slits wherein the under-vane groove 25 disposed in the kidney-shaped pressure port communicates with the kidney-shaped pressure port, in that the under-
vane groove disposed in the area of the kidney-shaped suction port communicates with the pressure chamber of an additional delivery device.
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3 - Experiments conducted within the scope of the present invention have shown that the friction of the vane heads on the inside face of the cylindrical displacement chamber represent a great source of loss. In order to reduce the 5 vane head friction it is possible to provide one or both friction partners with a friction-reducing coating. This is however expensive and connected with high manufacturing costs. A further possibility of reducing the friction of the vane head lies in reducing the thickness of the vane 10 and thus the effective pressure surface and the contact pressure force resulting therefrom. However a reduction in the vane thickness is only advisable up to a certain degree since otherwise the stability of the vanes is lost.
15 A further possibility for reducing the vane head friction lies in reducing the pressure in the under-vane grooves which are disposed in the suction area, thus within the kidney-shaped suction port, by throttling or fading it out to a lower pressure level. This solution is however 20 unfavourable as regards the degree of efficiency of the rotary vane-type machine since the oil is first brought to a high pressure in order then to be relaxed again by throttling. 25 With conventional vane-type pumps all the under-vane grooves are loaded with high pressure in order to ensure that the vanes move apart and the vane heads are kept adjoining the inside face of the cylindrical displacement chamber. According to the solution according to the 30 invention only the under-vane grooves in the pressure area are still in connection with the kidney-shaped pressure P3622P3
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port and are consequently biased with high pressure. The under-vane grooves disposed in the suction area communicate with the pressure chamber of an additional delivery device instead of with the kidney- shaped pressure 5 port. The additional delivery device is designed so that it maintains a sufficient pressure in the connected under-
vane grooves which is however significantly lower than the pressure in the pressure area of the rotary vane-type machine. A preferred embodiment of the rotary vane-type machine is characterized in that the additional delivery device is formed by a vane-type pump, more particularly a monovane pump which is driver by the drive shaft or rotor of the 15 rotary vane-type machine. This has the advantage that no additional drive is required and when integrating the additional delivery device only few changes have to he made to the rotary vane-type machine. The configuration of the additional delivery device as a mono rotary vane 20 type pump has the advantage that only one single additional component part, namely a vane, is required.
A further preferred embodiment of the rotary vane-type machine is characterized in that the drive shaft of the 25 rotary vane-type machine projects by one end through the rotor and beyond the rotor and that at the end of the drive shaft projecting beyond the rotor there is at least one slit for receiving a vane. This has the advantage that the existing drive shaft of the rotary vane-type 30 machine need only be extended slightly and provided with a P3622P3
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slit. Thus no expensive changes need be made to the rotary vane-type machine.
A further preferred embodiment of the rotary vane-type 5 machine is characterized in that in the end plate with the under-vane grooves a recess is provided for receiving the drive shaft end having the slit and the vane. This has the advantage that no additional component parts are required to receive the vane which during operation of the 10 rotary vanetype machine rotates with the drive shaft.
The end plate in practice forms the housing for the additional delivery device.
A further preferred embodiment of the rotary vane-type 15 machine is characterized in that the additional delivery device is formed by a toothed gear pump more particularly an external toothed gear pump which is driven by the drive shaft or rotor of the rotary vane-type machine. This has the advantage that no additional drive is required for the 20 additional delivery device.
A further preferred embodiment of the rotary vane-type machine is characterized in that the toothed gear pump comprises a driven first toothed gear which is coupled to 25 the drive shaft of the rotary vanetype machine and a second toothed gear which is located in engagement therewith. The two toothed gears which engage with each other deliver the work fluid into the under-vane groove which is to be supplied. The first toothed gear can also 30 be formed directly on the drive shaft of the rotary vane-
type machine.
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- 6 - A further preferred embodiment of the rotary vane-type machine is characterized in that the two toothed gears are housed in a recess in the end plate with the under-vane 5 grooves. This has the advantage that no additional component parts are required to receive the two toothed gears. A further preferred embodiment of the rotary vane-type 10 machine is characterized in that the additional delivery device is formed by an internally toothed gear pump whitish operates on the gerotor principle and is driven by the drive shaft of the rotary vane-type machine. Through the gerotor pump it is possible to maintain a sufficient 15 pressure in the connected under-vane grooves without the need for an additional drive.
A further preferred embodiment of the rotary vane-type machine is characterized in that the internally toothed 20 gear pump has an internally toothed gear ring which is housed rotatable in the end plate with the under-vane grooves and in which an externally cogged toothed gear is driven through the drive shaft of the rotary vane-type machine. The toothed gear and toothed ring interact as 25 they rotate so that pump chambers formed between their teeth enlarge on the suction side and reduce on the pressure side. A uniform delivery action is thereby achieved. 30 A further preferred embodiment of the rotary vane-type machine is characterized in that the drive shaft of the October 7, 2 002
- 7 rotary vane-type machine projects by one end through the rotor and beyond the rotor and that at the end of the drive shaft projecting beyond the rotor the toothed gear of the internally toothed gear pump is formed. This 5 provides the advantage that only one additional component part, namely the toothed ring, is required in order to establish the additional delivery device.
A further preferred embodiment of the rotary vane-type 10 machine is characterized in that the additional delivery device is formed by an axle stump of the drive shaft of the rotary vane-type machine which enables a build up of pressure in the manner of a slide bearing in a converging gap between the axle stump and a recess which is formed in 15 the end plate having the under-vane grooves. The recess is thereby formed eccentric to the axle stump of the drive shaft housed therein so that a tapering gap is produced.
During operation of the rotary vane-type machine the rotating drive shaft ensures the build up of pressure 20 along the principle of a sliding bearing in the tapering gap. At the point of maximum pressure a connection is preferably provided with the under-vane grooves of the rotary vane-type machine which is to be supplied. The delivery device which enables a pressure build up in the 25 manner of a sliding bearing is also designated slide bearing pump within the scope of the present text.
The problem outlined above is also solved with a rotary vane-type machine of the type described in that the under 30 vane groove disposed in the region of the kidney-shaped suction port has a wedged cross-section which narrows in P3622P3
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- 8 the circumferential direction of the under-vane groove.
Supplying the under-vane groove with oil can be through a full-length bore to the tank. As a result of the wedge-
shaped design of the under-vane groove, during operation 5 of the rotary vane-type machine, such as with an axial bearing, as a result of rotation of the rotor and the drag flow connected therewith a pressure builds up which assists the vane as it moves apart.
10 A further embodiment of the rotary vane-type machine is characterized in that the end plate forms with the under-
vane grooves the cover of the rotary vane-type machine.
Integrating the additional delivery device in the cover of the rotary vane-type machine provides the advantage that 15 the individual component parts of the additional delivery device are readily accessible when the cover is removed from the rotary vane-type machine.
A further preferred embodiment of the rotary vane-type 20 machine is characterized in that the rotor of the rotary vane-type machine forms the cover of the additional delivery device. The number of additional component parts can thereby be kept small. Where necessary an additional cover of for example plastics can also be disposed between 25 the rotor of the rotary vane-type machine and the additional delivery device.
Further features, advantages and details of the invention will be apparent from the following description in which
30 various different embodiments are described in detail with reference to the drawings in which: P3622P3
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Figure 1 shows the cover of a rotary vane-type machine with integrated additional mono rotary vane-type pump; Figure 2 shows the cover of a rotary vane-type machine with integrated external toothed gear pump; Figure 3 shows the cover of a rotary vane-type machine 10 with integrated gerotor pump; Figure 4 shows the cover of a rotary vane-type machine with integrated slide bearing pump; Figure 5 shows the cover of a rotary vanetype machine with specially designed under-vane grooves; and Figure 6 shows the view of a section along the line VI-VI of Figure 5.
A rotary vane-type machine according to the invention comprises a rotor which is shaped substantially as a circular disc. The rotor is mounted rotatable inside a cylindrical displacement chamber. The cylindrical 25 displacement chamber is mounted between two end plates of a housing which can be formed in one or several parts.
The inside contour of the cylindrical displacement chamber is selected so that two diametrically opposite pump 30 chambers are provided between the outer circumference of the rotor and the inside face of the cylindrical P3622P3
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- 10 displacement chamber. To this end the inside contour of the cylindrical displacement chamber has a so-called mini-
circle whose diameter corresponds substantially to the outer diameter of the rotor. Furthermore the inside 5 contour of the cylindrical displacement chamber has a so-
called maxi-circle whose diameter is larger than the outer diameter of the rotor so that it comes to form pump chambers. 10 The rotor has spread out over its circumferential surface several radially aligned slits which extend over the entire width of the rotor. Radially movable vanes are mounted in the slits. The rotor, the cylindrical displacement chamber and the end plates each define 15 between two-adjoining vanes a displacement chamber whose volume changes when the rotor rotates. This produces on the suction side of the vane-type pump an increase in volume which causes the work medium to be sucked into the displacement chamber. At the same time it leads on the 20 pressure side of the vane-type pump to a decrease in volume which causes the work medium to be delivered out from the relevant displacement chamber. At least one suction area and at least one pressure area are formed according to the rotary movement of the rotor. The 25 suction area is connected through a kidney-shaped suction port to a suction connection of the vane-type pump whilst the pressure area is connected through a kidney-shaped pressure port to a pressure connection of the vane-type pump. P3622P3
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Figure 1 shows a plan view of a cover of a pump housing of a vane-type pump according to the invention. In the outer circumferential area of the cover there are four full-
length holes 2, 3, 4, and 5 which serve to hold screws 5 through which the cover 1 can be fixed on the pump housing (not shown) of the rotary vane-type machine. Radially inside the full-length holes 2 to 5 there is a circular ring shaped sealing face 7 for the pump housing. Inside the region enclosed by the sealing face 7 there are two 10 diametrically opposite holes 10 and 11 to hold the fixing bolts which are used to fix the cylindrical displacement chamber between the end plate shown acting as the cover and a further end plate. In the assembled state of the rotary vane-type machine the cylindrical displacement 15 chamber (not shown) and the rotor (not shown) which is driven by a drive shaft are disposed between the cover and the further end plate.
Two diametrically arranged kidney-shaped pressure ports 14 20 and 15 are formed at least in part radially inside the region between the holes 10 and 11. The kidney-shaped pressure ports 14 and 15 contain work fluid which is loaded with high pressure during operation of the rotary vanetype machine. Off-set by 90 relative to the kidney 25 shaped pressure ports 14 and 15 are two diametrically opposite kidney-shaped suction ports 18 and 19. The kidney-shaped suction ports 18 and 19 are not connected to the kidney-shaped pressure ports 14 and 15.
30 Between the kidney-shaped pressure ports 14 and 15 two under-vane grooves 22 and 23 are formed in the cover 1.
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The under-vane grooves 22 and 23 communicate with the kidney-shaped pressure ports 14 and 15 (through a connection which is not shown). Two under-vane grooves 26 and 27 are formed between the kidney-shaped suction 5 ports 18 and 19. The under-vane grooves 26 and 27 are not connected to the under-vane grooves 22 and 23 but are connected with each other through a connecting duct 30 which is formed in the cover 1. A pressure connection duct 32 of a mono rotary vane-type pump 36 which is 10 integrated in the cover 1 opens in the connecting duct 30.
The mono rotary vane-type pump 36 has a rotor 38 which is formed by an extended end of the drive shaft of the rotary vane-type machine. A slit is formed in the rotor 38 and a 15 vane 40 is housed radially displaceable in the slit. The rotor 3 3 and the vane 40 are housed in a circular cylindrical recess 41 which is formed in the cover 1. In the base of the circular cylindrical recess 42 there is a suction connection 42 to the mono rotary vane-type pump 20 36. During operation the vane 40 of the mono rotary vane-
type pump 36 rotates anti-clockwise. Work fluid is thereby delivered from the suction connection 42 into the connection duct 32 which forms the pressure connection of the mono rotary vane-type pump 36.
The circular cylindrical recess 41 and the under-vane grooves 22, 23, 26, 27 are covered in the installed state by the rotor of the rotary vanetype machine. Thus the rotor of the rotary vane-type machine forms the cover of 30 the mono rotary vane-type pump 36. The mono rotary vane-
type pump 36 is designed so that it maintains a relatively P3622P3
low pressure in the under-vane grooves 26 and 27 which are disposed in the suction area. The suction connection 42 of the mono rotary vane-type pump 36 communicates with the supply tank of the rotary vane-type machine. Furthermore 5 during operation of the machine oil leaking out at the drive shaft is delivered through the mono rotary vane-type pump 36 to the pressure connection duct 32 and from there through the connecting duct 30 into the under-vane grooves 26 and 27.
The cover illustrated in Figure 2 corresponds substantially to the cover illustrated in Figure 1. The same parts are provided with the same reference numerals so that reference is made to the description here for
15 Figure 1. Only the differences between the two embodiments are dealt with below.
With the embodiment illustrated in Figure 2 an external toothed gear pump 46 is integrated in the cover 1. To 20 this end a recess 47 is provided in the cover 1 which serves to hold a first toothed gear 48 and a second toothed gear 50. The first toothed gear 48 is driven either by the drive shaft of the rotary vane-type machine or is formed directly on an extension of the drive shaft.
25 The driven first toothed gear 48 is in engagement with the second toothed gear 50. If the two toothed gears 48 and 50 are set in rotation through the drive shaft of the sliding vane work fluid is delivered from a suction connection 52 into the connecting duct 30 between the 30 undervane grooves 26 and 27.
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- 14 The covers illustrated in Figures 3, 4 and 5 correspond substantially to the cover illustrated in Figure 1. The same parts are provided with the same reference numerals so that reference is made in this respect to Figure 1.
5 Only the differences will be dealt with below.
With the embodiment illustrated in Figure 3 a gerotor pump 56 is integrated in the rotary vane-type machine. The gerotor pump 56 comprises a toothed ring 58 with internal 10 teeth which interact with the external teeth of a toothed gear 60 in order to deliver pressurized medium from a supply line 62 which communicates with a tank 64 into a pressure connection duct 32. The pressure connection duct 32 opens into a connecting duct 30 which connects the 15 under-vane grooves 26 and 27 together. Through the gexotor pump 56 pressurized medium is delivered from the tank 64 into the under-vane grooves 26 and 27.
With the embodiment illustrated in Figure 4 a slide 20 bearing pump 66 is integrated in the rotary vane-type machine. The slide bearing pump 66 comprises a recess 68 which is formed in the cover 1. The recess 68 has the shape of a circular cylinder in which an axle stump 70 of the drive shaft of the rotary vane-type machine is mounted 25 or housed slightly off-centre. The recess 68 connects with a pressurized medium tank 74 through a supply line 72. If the axle stump 70 of the drive shaft of the rotary vane-type machine is set in rotation as indicated by an arrow 73 then a pressure builds up in a gap 75 which 30 tapers in the rotary direction of the drive shaft. At the tapering end of the gap 75 is a pressure connection duct P3G22P3
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- 15 32 which opens into a connecting duct 30 which connects the two under-vane grooves 26 and 27 together. The slide bearing pump 66 thus serves to deliver pressurized medium from the tank 74 into the under-vane grooves 26 and 27.
With the embodiment illustrated in Figure 5 under-vane grooves 76 and 77 are provided radially inside the kidney-
shaped suction ports 18 and 19 and communicate with a pressurized medium reservoir 80 through supply lines 78 10 and 79. The pressure build up in the under-vane grooves 76 and 77 is through a drag flow which is generated by the interaction of the groove surfaces with the rotor located in the rotation. The rotor located in rotation thus interacts with the under-vane grooves 76 and 77 in the 15 manner of a hydrodynamic axial bearing.
Figure 6 provides that the under-vane groove 76 has a wedge-shaped crosssection so that a gap is produced which narrows in the direction of rotation. Through the gap 20 which narrows in the circumferential direction a pressure is built up which assists the vanes as they move apart.
The patent claims filed with the application are proposed wordings without prejudice for obtaining wider patent 25 protection. The applicant retains the right to claim further features disclosed up until now only in the description and/or drawings.
References used in the sub-claims refer to further designs 30 of the subject of the main claim through the features of each relevant sub-claim; they are not to be regarded as P3622P3
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- 16 dispensing with obtaining an independent subject protection for the features of the sub-claims referred to.
Since the subjects of the sub claims can form independent 5 and proper inventions in respect of the prior art known on
the priority date the applicant retains the right to make them the subject of independent claims or part declarations. They can furthermore also contain independent inventions which have a configuration 10 independent of the subject of the preceding sub-claims.
The embodiments are not to be regarded as a restriction of the invention. Rather numerous amendments and modifications are possible within the scope of the 15 invention, particularly those variations, elements and combinations and/or materials which are inventive for example through combination or modification of individual features or elements or process steps contained in the drawings and described in connection with the general 20 description and embodiments and claims and which can be
used by the expert to solve the problem set and which through combinable features lead to a new subject or to new process steps or sequence of process steps insofar as these refer to manufacturing, test and work processes.
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Claims (16)
1. Rotary vane-type machine, more particularly a vane-
type pump with a rotor driven by a drive shaft and mounted 5 rotatable inside a cylindrical displacement chamber between two end plates wherein substantially radially aligned slits are formed in the circumferential surface of the rotor, with the vanes mounted radially displaceable in the slits in order to deliver fluid from at least one 10 suction area into at least one pressure area wherein the suction area is connected to at least one kidney-shaped suction port and the pressure area is connected to at least one kidney-shaped pressure port which ports are formed in one of the end plates and wherein radially 15 inside the region between the kidney-shaped suction port and the kidney-shaped pressure port there are under-vane grooves which are connected to under-vane chambers which are provided in the slits whereby the under-vane groove disposed in the region of the kidney-shaped pressure port 20 is connected to the kidney- shaped pressure port and the under-vane groove disposed in the region of the kidney-
shaped suction port is connected to the pressure chamber of an additional delivery device.
25
2. Rotary vane-type machine more particularly according to claim 1 characterized in that the additional delivery device is formed by a vanetype pump, more particularly a mono rotary vane-type pump which is driven through the drive shaft of the rotary vane-type machine.
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3. Rotary vane-type machine more particularly according to one of the preceding claims characterized in that the drive shaft of the rotary vanetype machine projects by one end through the rotor and beyond the rotor and that at 5 the end of the drive shaft projecting beyond the rotor there is at least one slit for receiving a vane.
4. Rotary vane-type machine more particularly according to claim 3 characterized in that in the end plate with the 10 under-vane grooves a recess is provided for receiving the drive shaft end with the slit and vane.
5. Rotary vane-type machine more particularly according to claim 1 characterized in that the additional delivery 15 device is formed by a toothed gear pump, more particularly an external toothed gear pump which is driven through the drive shaft of the rotary vane-type machine.
6. Rotary vane-type machine more particularly according 20 to claim 5 characterized in that the toothed gear pump comprises a driven first toothed gear which is coupled to the drive shaft of the rotary vane-type machine, and a second toothed gear which engages therewith.
25
7. Rotary vane-type machine more particularly according to claim 6 characterized in that the two toothed gears are housed in a recess in the end plate with the under-vane grooves. 30
8. Rotary vane-type machine more particularly according to claim 1 characterized in that the additional delivery P3622P3
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- 19 device is formed by an internal toothed gear pump, more particularly on the gerotor principle, and through the drive shaft of the rotary vanetype machine.
5
9. Rotary vane-type machine more particularly according to claim 8 characterized in that the internal toothed gear pump has an internally toothed gear ring which is housed rotatable in the end plate with the under-vane grooves and in which an externally toothed gearwheel is driven through 10 the drive shaft of the rotary vane-type machine.
10. Rotary vane-type machine more particularly according to claim 7 or claim characterized in that the drive shaft of the rotary vane-type machine projects with one 15 end through the rotor and beyond the rotor and that at the end of the drive shaft projecting beyond the rotor there is the driven toothed gear of the toothed gear pump.
11. Rotary vane-type machine more particularly according 20 to claim 1 characterized in that the additional delivery device is formed by a stump of the drive shaft of the rotary vane-type machine which enables pressure to build up in the form of a sliding bearing in a converging gap between the stump and a recess which is formed in the end 25 plate with the undervane grooves.
12. Rotary vane-type machine more particularly according to the preamble of claim 1 characterized in that the under-vane groove disposed in the region of the kidney 30 shaped suction port has a wedged cross-section which P3622P3
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narrows down in the circumferential direction of the under-vane groove.
13. Rotary vane-type machine more particularly according 5 to one of the preceding claims characterized in that the end plate forms with the undervane grooves the cover of the rotary vane-type machine.
14. Rotary vane-type machine more particularly according 10 to one of the preceding claims characterized in that the rotor of the rotary vane-type machine forms the cover of the additional conveyor device.
15. Rotary vane-type machine more particularly sliding 15 vane pump with a rotor driven by a drive shaft and mounted rotatable inside a cylindrical displacement chamber between two end plates and in whose circumferential surface there are substantially radially aligned slits in which vanes are mounted radially displaceable in order to 20 deliver fluid from at least one suction area into at least one pressure area whereby the suction area is connected to at least one kidney-shaped suction port and the pressure area is connected to at least one kidney- shaped pressure port which are formed in one of the end plates in which 25 radially inside the area between the kidney-shaped suction port and kidney-shaped pressure port there are the under-
vane grooves which are connected to under-vane chambers which are provided in the slits whereby the under-vane groove disposed in the region of the kidney-shaped 30 pressure port is connected to the kidney- shaped pressure P3622P3
October 7, 2002
- 21 port characterized by at least one inventive feature disclosed in the application documents.
16. Rotary vane-type machine substantially as herein 5 described with reference to any one embodiment shown in the accompanying drawings.
P3622P3
October 7, 2002
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10150789 | 2001-10-15 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0223251D0 GB0223251D0 (en) | 2002-11-13 |
| GB2383611A true GB2383611A (en) | 2003-07-02 |
| GB2383611B GB2383611B (en) | 2005-04-06 |
Family
ID=7702536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0223251A Expired - Fee Related GB2383611B (en) | 2001-10-15 | 2002-10-08 | Rotary vane-type machine |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE10247518A1 (en) |
| FR (1) | FR2830904B1 (en) |
| GB (1) | GB2383611B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279158A (en) * | 2013-07-09 | 2015-01-14 | 罗伯特·博世有限公司 | Impeller pump |
| EP3056737A1 (en) * | 2015-02-11 | 2016-08-17 | Danfoss A/S | Vane pump |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007000953A1 (en) * | 2007-09-24 | 2009-04-09 | Zf Lenksysteme Gmbh | Vane pump, has pressurized rear blade channels radially and inwardly shifted, and suction-side rear blade channel supplied with operating medium staying under pressure via inlet connection to exhibit throttled outlet connection |
| DE102014222321B3 (en) * | 2014-10-31 | 2015-12-10 | Magna Powertrain Bad Homburg GmbH | Vane pump with improved starting behavior |
| DE102015213477A1 (en) * | 2015-07-17 | 2017-01-19 | Zf Friedrichshafen Ag | Dual pump system |
| DE102016221332A1 (en) * | 2016-10-28 | 2018-05-03 | Zf Friedrichshafen Ag | hydraulic system |
| DE102016121241B4 (en) | 2016-11-07 | 2018-09-13 | Nidec Gpm Gmbh | Hydraulic drive, hydraulic motor and integrated pump with hydraulic drive |
| DE102019201863B3 (en) | 2019-02-13 | 2020-06-18 | Hanon Systems Efp Deutschland Gmbh | Cooling lubrication system with dry sump |
| DE102019201864B4 (en) | 2019-02-13 | 2021-07-22 | Hanon Systems Efp Deutschland Gmbh | Cooling and lubrication system with dry sump |
| DE102019113395A1 (en) * | 2019-05-20 | 2020-11-26 | Schwäbische Hüttenwerke Automotive GmbH | Vane pump with vane support |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19531701C1 (en) * | 1995-08-14 | 1997-01-16 | Luk Fahrzeug Hydraulik | pump |
| DE19754285A1 (en) * | 1997-12-08 | 1999-06-10 | Luk Fahrzeug Hydraulik | Cellular vane machine, especially cellular vane pump |
| GB2340185A (en) * | 1998-07-31 | 2000-02-16 | Delphi France Automotive Sys | Balanced rotary vane pump with pressurised channels supplying fluid to the vane slots. |
| US6152716A (en) * | 1996-06-21 | 2000-11-28 | Luk Fahrzeug-Hydraulik Gmbh & Co. Kg | Vane pump |
| EP1243794A2 (en) * | 2001-03-21 | 2002-09-25 | Delphi Technologies, Inc. | Vane hydraulic motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1141551B1 (en) * | 1998-12-24 | 2002-10-16 | Mannesmann Rexroth AG | Pump assembly comprising two hydraulic pumps |
-
2002
- 2002-10-08 GB GB0223251A patent/GB2383611B/en not_active Expired - Fee Related
- 2002-10-11 FR FR0212665A patent/FR2830904B1/en not_active Expired - Fee Related
- 2002-10-11 DE DE10247518A patent/DE10247518A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19531701C1 (en) * | 1995-08-14 | 1997-01-16 | Luk Fahrzeug Hydraulik | pump |
| US6152716A (en) * | 1996-06-21 | 2000-11-28 | Luk Fahrzeug-Hydraulik Gmbh & Co. Kg | Vane pump |
| DE19754285A1 (en) * | 1997-12-08 | 1999-06-10 | Luk Fahrzeug Hydraulik | Cellular vane machine, especially cellular vane pump |
| GB2340185A (en) * | 1998-07-31 | 2000-02-16 | Delphi France Automotive Sys | Balanced rotary vane pump with pressurised channels supplying fluid to the vane slots. |
| EP1243794A2 (en) * | 2001-03-21 | 2002-09-25 | Delphi Technologies, Inc. | Vane hydraulic motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279158A (en) * | 2013-07-09 | 2015-01-14 | 罗伯特·博世有限公司 | Impeller pump |
| EP3056737A1 (en) * | 2015-02-11 | 2016-08-17 | Danfoss A/S | Vane pump |
| US9926930B2 (en) | 2015-02-11 | 2018-03-27 | Danfoss A/S | Vane pump |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10247518A1 (en) | 2003-04-17 |
| GB0223251D0 (en) | 2002-11-13 |
| FR2830904B1 (en) | 2006-02-03 |
| FR2830904A1 (en) | 2003-04-18 |
| GB2383611B (en) | 2005-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20131008 |