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
  • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
  • F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
• • 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
  • F04C18/12—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 of other than internal-axis type
  • F04C18/14—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 of other than internal-axis type with toothed rotary pistons
  • F04C18/16—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 of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
• • 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
  • F04C18/48—Rotary-piston pumps with non-parallel axes of movement of co-operating members
  • F04C18/54—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees
  • F04C18/56—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
  • F04C18/565—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing the axes of cooperating members being on the same plane
• • 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
  • F04C2210/00—Fluid
  • F04C2210/10—Fluid working
  • F04C2210/1094—Water
• • 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
  • F04C2210/00—Fluid
  • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
• • 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
  • F04C2250/00—Geometry
  • F04C2250/20—Geometry of the rotor
  • F04C2250/201—Geometry of the rotor conical shape

Definitions

• this iV value is basically a fixed, unchangeable value, which for the R718 task is usually in the range between 3 and 20 in order to be able to fulfill a wide working range.
• this iV value is basically a fixed, unchangeable value, which for the R718 task is usually in the range between 3 and 20 in order to be able to fulfill a wide working range.
• there are different and changeable operating conditions in the application for example between hot and cold ambient temperatures, which changes frequently. It would therefore be advantageous if the IV value of the R718 compressor could be adjusted in order to avoid over- or under-compression, which is detrimental to efficiency, and to be able to set the optimal effective IV value at each operating point.
• spindle rotor pair (2) When the spindle rotor pair (2) is referred to as "multi-stage", this means that there are several closed spindle rotor pair working chambers between the inlet (1.1) and the outlet (1.2), in that the known profile wrap angle is well over 360 ° goes out.
• This multistage of the spindle rotor pair (2) can be a basic requirement for the implementation of this invention for preferred embodiments.
• an R718 * positive displacement compressor must be designed in such a way that the effectively effective iV value is designed to be as simple, safe and inexpensive as possible over a wide working range, as efficiently and quickly as possible to different operating conditions, in order to avoid the over- or avoid under-compression as far as possible.
• this object for iV adjustment in an R718 * displacement compressor according to claim 1 with the spindle rotor pair (2) is achieved in that the compressor housing (1), starting from the outlet side (1.2) with a rotor profile length LR, extends over a length L, v plane (i.e.
• iV disks (3 j ) with index j for 1 ⁇ j ⁇ n with n as the number of these iV slices (3 j ) with n> 1 with a width b j per iV slice (3 j ) with flat surfaces PF preferably perpendicular to the neutral axis AN has, the iV disks (3 j ) for the respective operating conditions individually via motion control devices (5) each by a distance s, with 0 ⁇ s, ⁇ S j are specifically shifted and thus gas outlet G 0i and G 0 2 and G oS in the condensation space (1.2) is made possible in such a way that over- or under-compression is largely avoided.
• the number n and the widths b j per iV disk (3 j ) depend on the gradient as well as the desired area of application of the R718 * positive displacement compressor and are therefore application-specific.
• the distances s can be implemented differently for each iV slice (3 j ) and are then referred to as S j . It is particularly useful and advantageous that preferably practically every intermediate position s, with 0 ⁇ s, ⁇ S j on the path length s can be set via the movement control devices (5), so that the gas outlet Goi and GO2 specifically for the current operating conditions can be set, while gas continues to escape as G oS via the gas feed thread of the spindle rotor pair (2).
• Each iV disk (3 j ) is preferably positioned precisely via positioning pins (4) to the compressor housing (1) and to each other, so that in the closed state, as shown for example in FIG. 1, when all iV disks, preferably via the positioning pins (4) clearly defined, rest on top of one another, the clearance values between the spindle rotor pair (2) and the compressor housing (1) are always maintained, and preferably any contact between the spindle rotor pair (2) and the compressor housing (1) is reliably avoided, more preferably in this state the The internal contour of the compressor housing (1) is also machined in full contact with the iV disks.
• the length L, v can now be selected in such a way that at least the first working chamber is closed on the inlet side. In the so-called The "closed" state, that is to say when all the iV panes have been completely applied, the maximum iV value is reached.
• iV disks (3) When manufacturing the inner contour surrounding the pair of spindle rotors (2) in the compressor housing (1), preferably all iV disks (3) can be pressed flat and tightly on top of one another and clearly fixed using the positioning pins (4), so that the entire inner contour for the compressor housing (1) and at the same time for all iV disks (3) can be produced simultaneously, so that the desired clearance values for the spindle rotor pair (2) can be consistently achieved over the entire length LR.
• guide support surfaces (FF) can be designed in such a way that when the respective iV disks (3 j ) are displaced with a correspondingly suitable exertion of force via the movement control devices (5 j ) to move the respective iV disks (3 j ), the circumferentially uniform Movement of the respective IV disks (3 j ) is ensured over corresponding guide lengths and guide accuracies and tilting of the IV disks (3 j ) is avoided.
• the guide support surfaces (FF) can be related to the central guide diameter 0DF, as can the uniform exertion of force via the movement control devices (5 j ) per iV disk (3 j ).
• guide support surfaces FF can be provided and the force exerted to move the iV panes via the movement control devices (5) is preferably carried out with reference to the support 0DF, which is central to the neutral axis AN evenly over the entire circumference to avoid tilting or jamming of the iV disk movement.
• the movement control devices (5) for each iV disk are preferably operated by R718 * water hydraulics.
• any intermediate position si with 0 ⁇ si ⁇ sj with sj as the maximum displacement path per iV disk (3j) is specifically enabled for each operating point.
• the gas outlet G 0i also preferably takes place directly into the condensation space (1.2).
• each iV disk (3 j ) are designed with correspondingly smooth, bare and preferably ground surfaces for simple sealing to one another and to the compressor housing (1).
• the sealing between adjacent iV disks is thus preferably made via the flat planar surfaces PF with correspondingly bright or smooth contact / touch surfaces (preferably ground flat) and can optionally be improved, for example, by inserting O-rings in corresponding grooves with a holding function.
• the number n of iV disks (3 j ) and their width b j can be set in such a way that, depending on the application, the over- or under-compression, which is detrimental to efficiency, is avoided in the best possible way.
• the iV disks (3 j ) for the respective working / operating point are positioned via the motion control devices (5 j ) for each iV disk (3 j ) so that the R718 * compressor has the least Energy consumption is operated.
• the length Uv of the iV disks (3 j ) is designed in such a way that at least the first working chambers on the compressor inlet side (1.1) always remain closed.
• the positioning pins (4) take over the exact positioning of each iV disk (3 j ) as well as guiding and entraining them when moving the iV disks via the movement control devices (5 j ).
• the simple production with the best possible accuracy of fit is particularly advantageous, in that the internal contour of the working space surrounding the pair of spindle rotors (2) can be produced on the compressor housing (1) with the iV disks (3) in place, with the iV disks (3) are positioned exactly and reproducibly via positioning pins (4).
• the actually effective IV value is flexible and adjustable in any intermediate positions through targeted positioning s, with 0 ⁇ Si ⁇ S j , in order to achieve the most efficient actually effective IV value for the relevant operating point.
• the respective path length S j is shown in FIGS. 3 to 6 in a simplified manner only as s, a differentiation per iV-slice (3 j ) can of course be implemented and depends on the respective requirements.
• the play values are always uncritical because the play values between the iV panes increase (3 j ) and the spindle rotor heads.
• FIG. 1 shows a sectional view through an R718 * compressor with fully applied iV disks
• FIG. 2 shows a sectional illustration through an R718 * compressor perpendicular to a neutral axis
• FIG. 4 shows a sectional illustration through an R718 * compressor with a first shifted iV disk
• FIG. 5 shows a sectional illustration through an R718 * compressor with several displaced iV disks
• Fig. 6 is a sectional view through an R718 * compressor in which all iV-
• the external gas feed thread per spindle rotor (2) is shown as hatching under the designation "ANGLE” according to the AutoCAD drawing software (i.e. 2 lines at 45 °, at right angles to each other, always aligned).
• Fig. 1 shows an example of a sectional view through the R718 * compressor when all iV slices (3 j ) for 1 ⁇ j ⁇ n with n as the number of these iV slices (3 j ) with a width b j per iV slice (3 j ) are fully applied so that the maximum IV value for the relevant compressor version becomes effective.
• the only gas fluid flow (G) at the outlet is G oS via the gas feed thread of the spindle rotor pair (2).
• the number n of iV disks (3 j ) depends on the respective requirement profile when using the R718 * compressor, whereby the following applies: the more iV disks (3 j ), the finer the actually effective iV value can be graded taking into account the width b j of the respective iV slices.
• plane surfaces PF are also entered as a dashed line, preferably perpendicular to the neutral axis AN.
• guide support surfaces FF Z are also shown as an example centric to the neutral axis AN in relation to 0DF.
• FIG. 2 shows, by way of example, a sectional view perpendicular to the neutral axis AN in the case of a plane surface PF with cross-hatching.
• the preferably centric guide support surfaces FF are shown for each iV disk with indication of 0DF as well as the positioning pins (4) in pairs for each iV disk for the exact positioning of each iV disk in relation to the spindle rotor pair (2).
• FIGS. 3 to 6 Different positions of the iV disks (3 j ) for the simple implementation of different iV values according to the invention are shown in the following illustrations of FIGS. 3 to 6, with only one side being shown for better clarity, preferably designed as a mirror image of the neutral axis AN .
• FIG. 3 The exemplary sectional illustration in FIG. 3 as a detailed enlargement of FIG. 1 under the title "iV.m” shows the so-called “closed” position when all the iV panes (3) are completely created by setting the motion control devices (5) to Bs g and thus the maximum iV value becomes effective. This means that only the gas flow G oS leaves the R718 * compressor via the gas delivery thread. The pressure ratio is then P2. H at the compressor outlet (1.2) divided by p * at the inlet (1.1).
• FIG. 4 shows a position when the first iV disk (3.1) is moved by the control device (5) for this iV disk ( 3.1) the motion control Bsi specifically sets the displacement s for a desired intermediate position of this iV disk with 0 ⁇ Si ⁇ s and thus for the first time falls below the maximum iV value from FIG. 3, i.e. when the first iV disk (3.1 ) leaves the "closed” position.
• the first iV disk (3.1) seen from the compressor outlet (1.2) the first iV disk is counted.
• FIG. 5 The exemplary sectional illustration in FIG. 5 as a continuation of FIGS. 3 and 4 under the title "iV.nj" shows any position when moving several iV slices (3 j * ) with 1 ⁇ j * ⁇ n for n as Number of iV-slices by adding the movement control Bsi to the control devices (5) for these iV-slices (3 j ) for a desired intermediate position of these iV-slices (the plural is important) the displacement path s, with 0 ⁇ s, ⁇ s specifically and thus every application-specific desired intermediate value for the effective effective iV value is achieved.
• FIG. 6 shows the exemplary sectional illustration in FIG. 6 as a continuation of FIGS. 3 and 4 and 5 under the title "iV.L" shows the position of the minimally effective iV value by moving all iV disks by their complete displacement path by motion control Bs 0 are shifted for the open position.
• a R rotation axis per spindle rotor or also so-called. Center line

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Applications Or Details Of Rotary Compressors (AREA)
• Compressor (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=74205864

Family Applications (1)

Country Status (7)

Families Citing this family (1)

Family Cites Families (15)

• 2020
  • 2020-01-21 DE DE102020000350.8A patent/DE102020000350A1/de not_active Withdrawn
• 2021
  • 2021-01-20 US US17/794,062 patent/US12012961B2/en active Active
  • 2021-01-20 CN CN202180010278.5A patent/CN115003914A/zh active Pending
  • 2021-01-20 JP JP2022544696A patent/JP2023511198A/ja active Pending
  • 2021-01-20 AU AU2021210565A patent/AU2021210565B2/en active Active
  • 2021-01-20 WO PCT/EP2021/051215 patent/WO2021148475A1/de unknown
  • 2021-01-20 EP EP21701305.1A patent/EP4093973A1/de active Pending

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