EP3011181B1 - Refrigerant condenser - Google Patents
Refrigerant condenser Download PDFInfo
- Publication number
- EP3011181B1 EP3011181B1 EP14730912.4A EP14730912A EP3011181B1 EP 3011181 B1 EP3011181 B1 EP 3011181B1 EP 14730912 A EP14730912 A EP 14730912A EP 3011181 B1 EP3011181 B1 EP 3011181B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- bearing
- bearing housing
- housing
- compressor
- 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.)
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Links
- 239000003507 refrigerant Substances 0.000 title claims description 32
- 239000000314 lubricant Substances 0.000 claims description 118
- 238000005096 rolling process Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
-
- 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
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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
- 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
- F04C29/026—Lubricant separation
-
- 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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
- F25B31/026—Compressor arrangements of motor-compressor units with compressor of rotary 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
- F04C2240/00—Components
- F04C2240/50—Bearings
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
- F04C2240/52—Bearings for assemblies with supports on both sides
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- 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
- F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
Definitions
- the invention relates to a refrigerant compressor, in particular a screw compressor, comprising a compressor housing, a compressor element arranged in the compressor housing and driven by a drive, at least one bearing unit for at least one element of the drive, which comprises at least one bearing housing and at least one roller bearing arranged in the bearing housing.
- the invention is therefore based on the object of improving a refrigerant compressor of the type described at the outset in such a way that an optimal lubricant supply to the rolling bearing in the bearing housing is possible.
- This object is achieved according to the invention in a refrigerant compressor of the type described at the outset by supplying lubricant to the bearing housing from a lubricant distribution system, by assigning a lubricant metering unit to the bearing housing, which has a filter receiving chamber, and by arranging a filter body in the filter receiving chamber.
- the advantage of the solution according to the invention can be seen in the fact that with this it is possible to meter the flow of the lubricant through the filter body to the rolling bearing in the bearing housing and at the same time to reduce the probability of damage to the rolling bearing. that the lubricant flow is filtered through the filter body again immediately before entering the rolling bearing, so that particles that are also floating in the lubricant distribution system are also filtered out and cannot enter the rolling bearing.
- the filter body takes on the throttling function for the flow of the lubricant.
- an inlet channel extends from the filter receiving chamber to a lubricant chamber adjacent to the roller bearing, following the filter receiving chamber.
- this inlet channel has no additional functions to take over.
- the lubricant metering unit has a throttle bore arranged between the filter receiving chamber and a lubricant chamber adjacent to the roller bearing, which, in addition to the filter body, has a throttling effect on the lubricant flow supplied to the lubricant chamber, so that overall the throttle effect of the lubricant metering unit through the filter body and the throttle bore is created.
- Such a throttle bore has the advantage that its throttling effect is supplemented by the throttling effect of the filter body, and thus it can also be ensured in the bearing housing for various operating states of a reliable lubricant distribution system of the rolling bearing.
- the filter body not only has a throttling effect on the lubricant flow, but the filter body allows the throttle bore to be made as a very thin, fine bore, without the risk that this throttle bore will become blocked due to particles carried by the lubricant distribution system.
- bearing housing has a housing element in which the lubricant metering unit is arranged, in particular integrated.
- the housing element could, for example, be a housing section that receives the roller bearing.
- the housing element, which receives the lubricant metering unit is designed as a bearing housing cover of the bearing housing.
- the housing element is designed as a bearing housing ring of the bearing housing.
- the lubricant metering unit is integrated in the bearing housing cover.
- One solution provides that the lubricant metering unit feeds the lubricant to a lubricant chamber of the bearing housing, from which the lubricant can then enter the rolling bearing.
- the lubricant metering unit feeds the lubricant to the lubricant chamber, the lubricant collecting at a deepest point in the lubricant chamber and then entering the rolling bearing.
- the lubricant metering unit is provided with a nozzle bore downstream of the filter receiving chamber, which generates a lubricant jet directed at the rolling bearing in the bearing housing and thus specifically applies the lubricant, for example, to the rolling elements of the rolling bearing.
- the filter body used according to the invention has a further advantage, namely in that the nozzle bore can be designed as a very fine bore and because of the additional filter effect of the filter body, clogging of the nozzle bore by particles carried in the lubricant distribution system is avoided.
- a particularly favorable solution provides that the throttle bore of the lubricant metering unit is arranged in such a way that it acts as a nozzle bore.
- the filter body can be formed from different materials.
- the filter body prefferably be made of sintered metal, for which purpose bronze or stainless steel can be used as the material.
- the filter body is made of plastic which is neutral in terms of refrigerant and lubricant, in particular a sintered porous plastic, for example also a compacted or baked plastic granulate, can be used.
- the compressor element could be a piston or a scroll element with an appropriately designed drive for it.
- the compressor element is a screw rotor of a screw compressor and that the drive as elements comprises shaft sections supporting the screw rotor, at least one of which is mounted according to the present invention.
- the shaft sections arranged on the suction side and / or the shaft sections arranged on the high pressure side are supported according to the present invention.
- FIG. 1 The illustrated embodiment of a refrigerant compressor according to the invention comprises an overall housing 10 which has a compressor housing 12, a motor housing 14 arranged on one side of the compressor housing 12 and a pressure housing 16.
- the screw rotors 26, 28 extend from a low-pressure side 36 to a high-pressure side 38, the low-pressure side 36 being assigned a refrigerant supply channel 42, while an in on the high-pressure side 38 Fig. 1
- a high-pressure outlet (not shown) is provided, from which the compressed refrigerant enters the pressure housing 16 via an outflow channel 44, namely into an end chamber 46, from which it then passes through two lubricant separators 52, 54 arranged in the pressure housing 16, through which the lubricant flows the compressed refrigerant is separated and supplied to an oil sump 56 arranged in the pressure housing 16, wherein the refrigerant compressed to high pressure also emerges from the pressure housing 16 through a high pressure outlet, not shown.
- the screw rotors 26, 28 are supported in the region of the low-pressure side 36 of the screw rotors 26, 28 by means of bearing units 62, 64 arranged in the compressor housing, which support bearing shaft sections 66, 68 of the screw rotors 26, 28.
- screw rotors 26, 28 are supported in the region of their high-pressure side by bearing units 72, 74, which likewise support shaft sections 76, 78 of the screw rotors 26, 28.
- the bearing units 72, 74 are arranged in a bearing housing 82 on the high-pressure side, which is fixedly connected to the compressor housing 12 and projects into the pressure housing 16 following the compressor housing 12.
- the screw rotors 26, 28 are driven by a drive motor 84 arranged in the motor housing 14, the motor shaft 86 of which, for example, integrally merges into the bearing shaft section 66 and carries a rotor 92, which in this exemplary embodiment can also be rotated coaxially to the axis of rotation 32 of the bearing shaft section 66.
- the drive motor 84 has a stator 94, which is arranged in the motor housing 14 in a rotationally fixed manner.
- the drawn-in refrigerant first flows through the motor housing 14 in order to cool the rotor 92 and the stator 94, and then passes into the refrigerant supply channel 42, which the refrigerant to be drawn in on the low-pressure side 36 of the screw rotor 26, 28 feeds.
- a lubricant supply system designated as a whole by 100, which receives a filter unit from the lubricant sump 56, which is under high pressure, a filter unit 102 and then supplies the lubricant from the filter unit 102 to the individual bearing units 62, 64, 72, 74.
- the lubricant supply system 100 comprises a lubricant distribution system 104 leading from the filter unit 102 to the bearing units 62, 64.
- the bearing shaft sections 66, 68 are rotatably accommodating roller bearings 112, 114 each in bearing housings 116, 118, which on the one hand hold and with the outer bearing rings 122, 124 of the roller bearings 112, 114
- Receiving holes 126, 128 provided wall areas 132, 134 of the compressor housing 12 are formed and are closed on a side facing away from the respective screw rotor 26, 28 by bearing housing covers 136, 138, so that there are lubricant chambers 142, 144 in the bearing housings 116, 118, which contain the lubricant is to be supplied for lubrication of the roller bearings 112, 114.
- lubricant must be supplied to these lubricant chambers 142, 144 to a sufficient extent in order to be able to ensure reliable and permanent lubrication of the roller bearings 112, 114, but on the other hand too much lubricant supplied to the lubricant chambers 142, 144 leads to splashing and crushing losses in the region of the roller bearings 112 , 114, which increase the power consumption of the drive motor 84 and thus deteriorate the coefficient of performance of the refrigerant compressor.
- each of the bearing housings 116, 118 is provided with a lubricant metering unit 152, 154, which is integrated, for example, in the respective bearing housing cover 136, 138.
- lubricant metering units 152, 154 The function and mode of operation of the lubricant metering units 152, 154 is explained below by way of example with reference to the lubricant metering unit 154, integrated in the bearing housing cover 138, the corresponding explanations for the lubricant metering unit 152, integrated in the bearing housing cover 136.
- the bearing housing cover 138 comprises an outer ring body 162, which is inserted with its radially outer peripheral surface 164 into the corresponding receiving bore, in this case the receiving bore 128.
- An end wall, designated as a whole by 166, is formed on the ring body 162 and delimits an interior 168 enclosed by the annular body 162 on a side facing away from the respective screw rotor 26, 28, while the interior 168 faces the respective rolling bearing, in this case the rolling bearing 114 has an opening 172 so that the corresponding lubricant chamber 144 can extend into the interior 168.
- the ring body 162 comprises a circumferential groove 174, which extends from the peripheral surface 164 and serves to pass on the lubricant supplied by the lubricant distribution system 104, for example to the bearing housing cover 138.
- the lubricant metering unit 154 comprises in the in Fig. 3 illustrated first exemplary embodiment of the same, a filter receiving chamber 182 extending from the groove 174 into the ring body 162 and into which a filter body 184 is inserted.
- An inlet channel 186 extends from the filter receiving chamber 182, preferably coaxially thereto, to the interior 168.
- the filter receiving chamber 182 and the inlet channel 186 are designed as bores, the filter receiving chamber 182 having a larger diameter with respect to a central axis 188 than the inlet channel 186 adjoining it coaxially, so that the transition from the filter receiving chamber 182 into the inlet channel 186 forms a step 192 against which the filter body 184 rests and through which the filter body 184 is secured against migration into the interior 168.
- the filter body 184 is preferably made of a porous material, so that the filter body 184, by selecting the porosity thereof, acts as a flow restrictor for the supplied lubricant and is therefore able to restrict the supply of lubricant into the corresponding lubricant chamber 144 in such a way that sufficient lubricant, however, not too much lubricant is supplied to the respective lubricant chamber, in this case the lubricant chamber 144.
- the filter body 184 can be formed from different materials.
- the filter body 184 is made of sintered metal, in which case bronze or stainless steel can be used as the material.
- the filter body 184 is formed from plastic which is neutral in terms of refrigerant and lubricant, it being possible in particular to use a sintered porous plastic and / or a compacted baked plastic granulate.
- the inlet channel 186 adjoining the filter receiving chamber 182 does not have a flow-preventing effect, but is irrelevant to the question of metering the amount of lubricant supplied to the lubricant chamber 144.
- the lubricant then collects, for example at least in part, in the lubricant chamber 144 at the lowest point in the direction of gravity in the form of a lubricant bath 190 and passes from there into the roller bearing 114.
- the inlet channel 186 adjoining the filter receiving chamber 182 does not open directly into the interior 168 of the ring body 162, but passes into a throttle bore 194 which, in addition to the filter body 184, has a throttling effect on the supplied lubricant flow, so that in this case the lubricant metering unit 154 'on the one hand exerts a throttling effect through the filter body 184 and on the other hand through the throttle bore 194, the throttle bore 194 preferably being oriented radially to the axis of rotation 34 of the corresponding roller bearing, in this case the roller bearing 114.
- the inlet channel 186 running radially to the axis of rotation 34 of the associated roller bearing 114 merges into a nozzle bore 196 which lies within the opening 172 of the interior 186 facing the roller bearing 114, but extends in particular parallel or slightly obliquely to the axis of rotation 34 of the associated roller bearing 114 and thus generates a lubricant jet 198 directed directly at the roller bearing 114, in particular at the rolling elements of the same, so that a direct lubricant is supplied to the roller bearing 114 in order to optimize the lubricant distribution in the roller bearing 114.
- the inlet channel 186 to the interior 168 of the ring body 162 is closed.
- the lubricant distribution system 104 "'supplies not only the bearing units 62 and 64 but also the bearing units 72 and 74 with lubricant.
- each of the bearing units 72 and 74 comprises a set of roller bearings 202, 204 and 206, which are arranged in the high-pressure-side bearing housing, designated as a whole by 82, and with their bearing outer rings 212, 214, 216 in receiving bores 222 and 224, respectively, provided for them
- Bearing housing 82 sit, the receiving bores 222, 224 being surrounded by wall areas 226, 228 of the high-pressure side bearing housing 82 and also being delimited by wall areas 232, 234 on their side facing the high-pressure sides 38 of the screw rotors 26, 28, which are defined by the shaft sections 76 and 78 are penetrated and close tightly with them, so that the wall regions 232, 234 form a tight seal between the high-pressure sides 38 of the screw rotors 26, 28 and the receiving bores 222, 224.
- Bearing housing rings 242, 244, which are inserted into the receiving bores 222, 224, are located on the opposite sides of the high-pressure sides 38 of the screw rotors 26, 28 and are thus arranged between the respective wall regions 232, 234 and the nearest roller bearing 202.
- Such bearing housing rings 242, 244 can either, as in Fig. 6 and 7 shown, be arranged at the end of the roller bearings 202, 204, 206 or between two of the roller bearings 202, 204, 206.
- the bearing housing rings 242, 244 delimit lubricant chambers 252, 254 arranged between them and the closest roller bearings 202, from which a lubricant supply to the roller bearings 202, 204 and 206 takes place, for example through the respective bearings.
- each of these bearing housing rings 242, 244 comprises an annular body 262 with a peripheral surface 264 abutting the wall regions 226, 228, and an inner space 266 opposite the peripheral surfaces 264, which is part of the respective lubricant chamber 254.
- a groove 274 extends into the ring body 262 in the same way as in the case of the bearing housing covers 136, 138.
- the filter receiving chamber 182 extends with the filter body 184 and an inlet channel 186 adjoining the filter receiving chamber 182, which opens into the interior 266 of the bearing housing ring 244.
- the lubricant metering unit 152, 154 is therefore also provided in each of the bearing housing rings 242, 244 Has annular body 262 extending filter receiving chamber 182, in which the filter body 144 is inserted and from which the inlet channel 186 extends to the interior 266 of the bearing housing ring 244.
- the lubricant metering unit 152, 154 is configured in the same way as described in the previous exemplary embodiments and has the same effect as in the case of these exemplary embodiments.
- the bearing housing ring 244 can also be used between two of the roller bearings 202, 204, 206.
- the lubricant metering unit 154 is designed in the same way as described in the third exemplary embodiment of the bearing housing cover 136, 138 of the first exemplary embodiment of the refrigerant compressor according to the invention, so that reference can be made in full to the description of the third exemplary embodiment, the lubricant metering unit 154" in this case is integrated into the ring body 262 and the ring body 262 has no interior 266.
- the annular body 262 has the nozzle bore 196 which extends from the inlet channel 186 and into the lubricant chamber 254 and is directed onto the first roller bearing 202, which generates the lubricant jet 198, which is directed in particular at roller bodies of the first roller bearing 202.
- a third exemplary embodiment of a bearing ring 244 "according to the invention, shown in FIG Fig. 10 , is designed such that it can preferably be used between two of the roller bearings 202, 204, 206, opposing nozzle bores 196a, b being provided, each of which generates a lubricant jet 198a, b, so that the lubricant jets 198a, b are in each other spread opposite directions.
- the third exemplary embodiment is designed in the same way as the second exemplary embodiment, so that reference is made in full to this.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rolling Contact Bearings (AREA)
Description
Die Erfindung betrifft einen Kältemittelverdichter, insbesondere einen Schraubenverdichter, umfassend ein Verdichtergehäuse, ein in dem Verdichtergehäuse angeordnetes und durch einen Antrieb angetriebenes Verdichterelement, mindestens eine Lagereinheit für mindestens ein Element des Antriebs, welche mindestens ein Lagergehäuse und mindestens ein in dem Lagergehäuse angeordnetes Wälzlager umfasst.The invention relates to a refrigerant compressor, in particular a screw compressor, comprising a compressor housing, a compressor element arranged in the compressor housing and driven by a drive, at least one bearing unit for at least one element of the drive, which comprises at least one bearing housing and at least one roller bearing arranged in the bearing housing.
Derartige Kältemittelverdichter sind aus dem Stand der Technik bekannt. Die Druckschrift
Bei diesen Kältemittelverdichtern besteht das Problem, dass das Wälzlager in dem Lagergehäuse einerseits optimal geschmiert werden soll, andererseits eine Zufuhr von zu viel Schmiermittel wiederum zu Leistungsverlusten des Verdichters führt.The problem with these refrigerant compressors is that on the one hand the rolling bearing in the bearing housing should be optimally lubricated, on the other hand the supply of too much lubricant in turn leads to loss of performance of the compressor.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Kältemittelverdichter der eingangs beschriebenen Art derart zu verbessern, dass eine optimale Schmiermittelversorgung des Wälzlagers in dem Lagergehäuse möglich ist. Diese Aufgabe wird bei einem Kältemittelverdichter der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, dass dem Lagergehäuse von einem Schmiermittelverteilsystem Schmiermittel zugeführt wird, dass dem Lagergehäuse eine Schmiermitteldosiereinheit zugeordnet ist, welche eine Filteraufnahmekammer aufweist, und dass in der Filteraufnahmekammer ein Filterkörper angeordnet ist.The invention is therefore based on the object of improving a refrigerant compressor of the type described at the outset in such a way that an optimal lubricant supply to the rolling bearing in the bearing housing is possible. This object is achieved according to the invention in a refrigerant compressor of the type described at the outset by supplying lubricant to the bearing housing from a lubricant distribution system, by assigning a lubricant metering unit to the bearing housing, which has a filter receiving chamber, and by arranging a filter body in the filter receiving chamber.
Der Vorteil der erfindungsgemäßen Lösung ist darin zu sehen, dass mit dieser die Möglichkeit besteht, durch den Filterkörper den Strom des Schmiermittels zu dem Wälzlager im Lagergehäuse zu dosieren und gleichzeitig die Wahrscheinlichkeit für Beschädigungen des Wälzlagers noch dadurch zu reduzieren, dass der Schmiermittelstrom unmittelbar vor Eintritt in das Wälzlager nochmals durch den Filterkörper gefiltert wird, so dass auch in dem Schmiermittelverteilsystem noch mitschwimmende Partikel ausgefiltert werden und nicht in das Wälzlager eintreten können.The advantage of the solution according to the invention can be seen in the fact that with this it is possible to meter the flow of the lubricant through the filter body to the rolling bearing in the bearing housing and at the same time to reduce the probability of damage to the rolling bearing. that the lubricant flow is filtered through the filter body again immediately before entering the rolling bearing, so that particles that are also floating in the lubricant distribution system are also filtered out and cannot enter the rolling bearing.
Im Zusammenhang mit der voranstehenden Erläuterung der einzelnen Komponenten der Schmiermitteldosiereinheit wurden keine weiteren Angaben zur Ausbildung derselben im Hinblick auf zusätzliche Elemente zur Filterkörperaufnahme und zum Filterkörper gemacht.In connection with the above explanation of the individual components of the lubricant metering unit, no further details regarding the formation of the same with regard to additional elements for the filter body holder and the filter body were given.
Insbesondere wurde davon ausgegangen, dass der Filterkörper die Drosselfunktion für den Strom des Schmiermittels übernimmt. Im einfachsten Fall ist dabei vorgesehen, dass sich im Anschluss an die Filteraufnahmekammer ein Zulaufkanal von der Filteraufnahmekammer bis zu einer an das Wälzlager angrenzenden Schmiermittelkammer erstreckt.In particular, it was assumed that the filter body takes on the throttling function for the flow of the lubricant. In the simplest case, it is provided that an inlet channel extends from the filter receiving chamber to a lubricant chamber adjacent to the roller bearing, following the filter receiving chamber.
Dieser Zulaufkanal hat im einfachsten Fall keinerlei zusätzliche Funktionen zu übernehmen.In the simplest case, this inlet channel has no additional functions to take over.
Eine andere vorteilhafte Lösung sieht jedoch vor, dass die Schmiermitteldosiereinheit eine zwischen der Filteraufnahmekammer und einer an das Wälzlager angrenzenden Schmiermittelkammer angeordnete Drosselbohrung aufweist, welche ergänzend zum Filterkörper eine Drosselwirkung auf den der Schmiermittelkammer zugeführten Schmiermittelstrom ausübt, so dass insgesamt die Drosselwirkung der Schmiermitteldosiereinheit durch den Filterkörper und die Drosselbohrung entsteht.Another advantageous solution provides, however, that the lubricant metering unit has a throttle bore arranged between the filter receiving chamber and a lubricant chamber adjacent to the roller bearing, which, in addition to the filter body, has a throttling effect on the lubricant flow supplied to the lubricant chamber, so that overall the throttle effect of the lubricant metering unit through the filter body and the throttle bore is created.
Eine derartige Drosselbohrung hat den Vorteil, dass sich deren Drosselwirkung mit der Drosselwirkung des Filterkörpers ergänzt und somit sich auch für verschiedene Betriebszustände eines zuverlässigen Schmiermittelverteilsystems des Wälzlagers in dem Lagergehäuse sicherstellen lässt.Such a throttle bore has the advantage that its throttling effect is supplemented by the throttling effect of the filter body, and thus it can also be ensured in the bearing housing for various operating states of a reliable lubricant distribution system of the rolling bearing.
Insbesondere hat in diesem Fall der Filterkörper nicht nur eine drosselnde Wirkung auf den Schmiermittelstrom, sondern der Filterkörper erlaubt es, die Drosselbohrung als sehr dünne feine Bohrung auszuführen, ohne dass das Risiko besteht, dass diese Drosselbohrung aufgrund von von dem Schmiermittelverteilsystem mitgeführten Partikeln verstopft.In particular, in this case the filter body not only has a throttling effect on the lubricant flow, but the filter body allows the throttle bore to be made as a very thin, fine bore, without the risk that this throttle bore will become blocked due to particles carried by the lubricant distribution system.
Hinsichtlich der Anordnung der Schmiermitteldosiereinheit wurden bislang keine näheren Angaben gemacht.No details have so far been given with regard to the arrangement of the lubricant metering unit.
Prinzipiell wäre es denkbar, die Schmiermitteldosiereinheit vor dem Lagergehäuse in dem Schmiermittelverteilsystem vorzusehen.In principle, it would be conceivable to provide the lubricant metering unit in front of the bearing housing in the lubricant distribution system.
Eine günstige Lösung sieht jedoch vor, dass die Schmiermitteldosiereinheit in das Lagergehäuse integriert ist.A cheap solution, however, provides that the lubricant metering unit is integrated in the bearing housing.
Eine besonders zweckmäßige Lösung sieht vor, dass das Lagergehäuse ein Gehäuseelement aufweist, in welchem die Schmiermitteldosiereinheit angeordnet, insbesondere integriert, ist.A particularly expedient solution provides that the bearing housing has a housing element in which the lubricant metering unit is arranged, in particular integrated.
Dabei könnte das Gehäuseelement beispielsweise ein das Wälzlager aufnehmender Gehäuseabschnitt sein.The housing element could, for example, be a housing section that receives the roller bearing.
Eine andere vorteilhafte Lösung sieht jedoch vor, dass das Gehäuseelement, welches die Schmiermitteldosiereinheit aufnimmt, als Lagergehäusedeckel des Lagergehäuses ausgebildet ist.Another advantageous solution provides, however, that the housing element, which receives the lubricant metering unit, is designed as a bearing housing cover of the bearing housing.
Eine weitere vorteilhafte Lösung sieht vor, dass das Gehäuseelement als Lagergehäusering des Lagergehäuses ausgebildet ist.Another advantageous solution provides that the housing element is designed as a bearing housing ring of the bearing housing.
Insbesondere ist in diesem Fall die Schmiermitteldosiereinheit in den Lagergehäusedeckel integriert.In this case, in particular, the lubricant metering unit is integrated in the bearing housing cover.
Hinsichtlich der Führung des Schmiermittels in dem Lagergehäuse wurden bislang keine näheren Angaben gemacht.With regard to the guidance of the lubricant in the bearing housing, no further details have so far been given.
So sieht eine Lösung vor, dass die Schmiermitteldosiereinheit das Schmiermittel einer Schmiermittelkammer des Lagergehäuses zuführt, von welcher das Schmiermittel dann in das Wälzlager eintreten kann.One solution provides that the lubricant metering unit feeds the lubricant to a lubricant chamber of the bearing housing, from which the lubricant can then enter the rolling bearing.
Im einfachsten Fall ist vorgesehen, dass die Schmiermitteldosiereinheit das Schmiermittel der Schmiermittelkammer zuführt, wobei sich das Schmiermittel an einer tiefsten Stelle der Schmiermittelkammer sammelt und dann in das Wälzlager eintritt.In the simplest case, it is provided that the lubricant metering unit feeds the lubricant to the lubricant chamber, the lubricant collecting at a deepest point in the lubricant chamber and then entering the rolling bearing.
Eine andere vorteilhafte Lösung sieht vor, dass die Schmiermitteldosiereinheit mit einer der Filteraufnahmekammer nachgeordneten Düsenbohrung versehen ist, welche einen auf das Wälzlager in dem Lagergehäuse gerichteten Schmiermittelstrahl erzeugt und somit gezielt das Schmiermittel beispielsweise auf die Wälzkörper des Wälzlagers aufbringt.Another advantageous solution provides that the lubricant metering unit is provided with a nozzle bore downstream of the filter receiving chamber, which generates a lubricant jet directed at the rolling bearing in the bearing housing and thus specifically applies the lubricant, for example, to the rolling elements of the rolling bearing.
In diesem Fall hat der erfindungsgemäß verwendete Filterkörper einen weiteren Vorteil, nämlich dahingehend, dass die Düsenbohrung als sehr feine Bohrung ausgebildet sein kann und aufgrund der zusätzlichen Filterwirkung des Filterkörpers ein Verstopfen der Düsenbohrung durch in dem Schmiermittelverteilsystem mitgeführte Partikel vermieden wird.In this case, the filter body used according to the invention has a further advantage, namely in that the nozzle bore can be designed as a very fine bore and because of the additional filter effect of the filter body, clogging of the nozzle bore by particles carried in the lubricant distribution system is avoided.
Eine besonders günstige Lösung sieht vor, dass die Drosselbohrung der Schmiermitteldosiereinheit so angeordnet ist, dass diese als Düsenbohrung wirkt.A particularly favorable solution provides that the throttle bore of the lubricant metering unit is arranged in such a way that it acts as a nozzle bore.
Bei der erfindungsgemäßen Lösung kann der Filterkörper aus unterschiedlichen Materialien ausgebildet sein.In the solution according to the invention, the filter body can be formed from different materials.
Eine Möglichkeit sieht vor, den Filterkörper aus Sintermetall auszubilden, wobei hierzu Bronze oder rostfreier Stahl als Material verwendet werden können.One possibility provides for the filter body to be made of sintered metal, for which purpose bronze or stainless steel can be used as the material.
Eine andere Möglichkeit sieht vor, den Filterkörper aus kältemittel- und schmiermittelneutralem Kunststoff auszubilden, wobei insbesondere ein gesinterter poröser Kunststoff, beispielsweise auch ein kompaktiertes oder verbackenes Kunststoffgranulat, eingesetzt werden kann.Another possibility provides for the filter body to be made of plastic which is neutral in terms of refrigerant and lubricant, in particular a sintered porous plastic, for example also a compacted or baked plastic granulate, can be used.
Zu dem Verdichterelement und zu dem Antrieb wurden bislang keine weiteren Angaben gemacht.No further details have so far been given on the compressor element and the drive.
So könnte das Verdichterelement ein Kolben oder ein Scroll-Element, mit einem entsprechend ausgebildeten Antrieb für dieses sein.For example, the compressor element could be a piston or a scroll element with an appropriately designed drive for it.
Eine vorteilhafte Lösung sieht vor, dass das Verdichterelement ein Schraubenläufer eines Schraubenverdichters ist und dass der Antrieb als Elemente die Schraubenläufer lagernde Wellenabschnitte umfasst, von denen mindestens einer gemäß der vorliegenden Erfindung gelagert ist.An advantageous solution provides that the compressor element is a screw rotor of a screw compressor and that the drive as elements comprises shaft sections supporting the screw rotor, at least one of which is mounted according to the present invention.
Insbesondere sind die saugseitig angeordneten und/oder die hochdruckseitig angeordneten Wellenabschnitte gemäß der vorliegenden Erfindung gelagert.In particular, the shaft sections arranged on the suction side and / or the shaft sections arranged on the high pressure side are supported according to the present invention.
Weitere Merkmale und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung sowie der zeichnerischen Darstellung einiger Ausführungsbeispiele.Further features and advantages of the invention are the subject of the following description and the drawing of some exemplary embodiments.
In der Zeichnung zeigen:
- Fig. 1
- einen schematischen Längsschnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Kältemittelverdichters;
- Fig. 2
- eine vergrößerte Schnittdarstellung entsprechend
Fig. 1 im Bereich von saugseitig angeordneten Lagereinheiten; - Fig. 3
- einen vergrößerten Schnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Lagergehäusedeckels;
- Fig. 4
- einen Schnitt ähnlich
Fig. 3 durch ein zweites Ausführungsbeispiel eines erfindungsgemäßen Lagergehäusedeckels; - Fig. 5
- einen Schnitt durch ein drittes Ausführungsbeispiel eines erfindungsgemäßen Lagergehäusedeckels;
- Fig. 6
- einen schematischen Längsschnitt ähnlich
Fig. 1 durch ein zweites Ausführungsbeispiel eines erfindungsgemäßen Kältemittelverdichters; - Fig. 7
- eine vergrößerte Schnittdarstellung entsprechend
Fig. 6 im Bereich von hochdruckseitig angeordneten Lagereinheiten; - Fig. 8
- einen vergrößerten Schnitt ähnlich
Fig. 3 durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Lagergehäuserings; - Fig. 9
- einen vergrößerten Schnitt ähnlich
Fig. 8 durch ein zweites Ausführungsbeispiel eines erfindungsgemäßen Lagergehäuserings und - Fig. 10
- einen Schnitt ähnlich
Fig. 8 durch ein drittes Ausführungsbeispiel eines erfindungsgemäßen Lagergehäuserings.
- Fig. 1
- a schematic longitudinal section through a first embodiment of a refrigerant compressor according to the invention;
- Fig. 2
- an enlarged sectional view accordingly
Fig. 1 in the area of storage units arranged on the suction side; - Fig. 3
- an enlarged section through a first embodiment of a bearing housing cover according to the invention;
- Fig. 4
- a cut similar
Fig. 3 by a second embodiment of a bearing housing cover according to the invention; - Fig. 5
- a section through a third embodiment of a bearing housing cover according to the invention;
- Fig. 6
- a schematic longitudinal section similar
Fig. 1 by a second embodiment of a refrigerant compressor according to the invention; - Fig. 7
- an enlarged sectional view accordingly
Fig. 6 in the area of storage units arranged on the high-pressure side; - Fig. 8
- an enlarged section similar
Fig. 3 by a first embodiment of a bearing housing ring according to the invention; - Fig. 9
- an enlarged section similar
Fig. 8 by a second embodiment of a bearing housing ring according to the invention and - Fig. 10
- a cut similar
Fig. 8 by a third embodiment of a bearing housing ring according to the invention.
Ein in
In dem Verdichtergehäuse 12 sind Aufnahmebohrungen 22, 24 für Schraubenläufer 26 bzw. 28 vorgesehen, die in den Aufnahmebohrungen 22, 24 jeweils um Drehachsen 32, 34 drehbar gelagert sind.In the
Die Schraubenläufer 26, 28 erstrecken sich dabei von einer Niederdruckseite 36 zu einer Hochdruckseite 38, wobei der Niederdruckseite 36 ein Kältemittelzufuhrkanal 42 zugeordnet ist, während auf der Hochdruckseite 38 ein in
Die Lagerung der Schraubenläufer 26, 28 erfolgt im Bereich der Niederdruckseite 36 der Schraubenläufer 26, 28 durch in dem Verdichtergehäuse angeordnete Lagereinheiten 62, 64, welche Lagerwellenabschnitte 66, 68 der Schraubenläufer 26, 28 lagern.The screw rotors 26, 28 are supported in the region of the low-
Ferner erfolgt eine Lagerung der Schraubenläufer 26, 28 im Bereich ihrer Hochdruckseite durch Lagereinheiten 72, 74, welche ebenfalls Wellenabschnitte 76, 78 der Schraubenläufer 26, 28 lagern.Furthermore, the
Die Lagereinheiten 72, 74 sind dabei in einem hochdruckseitigen Lagergehäuse 82 angeordnet, welches fest mit dem Verdichtergehäuse 12 verbunden ist und im Anschluss an das Verdichtergehäuse 12 in das Druckgehäuse 16 hineinragt.The bearing
Ein Antrieb der Schraubenläufer 26, 28 erfolgt durch einen im Motorgehäuse 14 angeordneten Antriebsmotor 84, dessen Motorwelle 86 beispielsweise einstückig in den Lagerwellenabschnitt 66 übergeht und einen Rotor 92 trägt, der bei diesem Ausführungsbeispiel koaxial zur Drehachse 32 des Lagerwellenabschnitts 66 ebenfalls drehbar ist.The screw rotors 26, 28 are driven by a
Ferner weist der Antriebsmotor 84 einen Stator 94 auf, welcher drehfest im Motorgehäuse 14 angeordnet ist.Furthermore, the
Bei dem dargestellten Ausführungsbeispiel des erfindungsgemäßen Kältemittelverdichters strömt beispielsweise das angesaugte Kältemittel zunächst durch das Motorgehäuse 14 hindurch, um den Rotor 92 und den Stator 94 zu kühlen, und tritt dann in den Kältemittelzufuhrkanal 42 über, welcher das anzusaugende Kältemittel der Niederdruckseite 36 der Schraubenläufer 26, 28 zuführt.In the illustrated embodiment of the refrigerant compressor according to the invention, for example, the drawn-in refrigerant first flows through the
Zur Schmierung sämtlicher Lagereinheiten 62, 64 und 72, 74 sowie auch der Schraubenläufer 26, 28 in den Aufnahmebohrungen 22, 24 ist ein als Ganzes mit 100 bezeichnetes Schmiermittelversorgungssystem vorgesehen, welches aus dem Schmiermittelsumpf 56, der unter Hochdruck steht, Schmiermittel aufnimmt, einer Filtereinheit 102 zuführt und dann von der Filtereinheit 102 das Schmiermittel den einzelnen Lagereinheiten 62, 64, 72, 74 zuführt.For the lubrication of all bearing
Insbesondere umfasst das Schmiermittelversorgungssystem 100 ein von der Filtereinheit 102 zu den Lagereinheiten 62, 64 führendes Schmiermittelverteilsystem 104.In particular, the lubricant supply system 100 comprises a
Um die Lagereinheiten 62, 64 optimal durch das Schmiermittelverteilsystem 104 schmieren zu können, sind die Lagerwellenabschnitte 66, 68 drehbar aufnehmende Wälzlager 112, 114 jeweils in Lagergehäusen 116, 118 angeordnet, die einerseits durch Lageraußenringe 122, 124 der Wälzlager 112, 114 aufnehmende und mit Aufnahmebohrungen 126, 128 versehene Wandbereiche 132, 134 des Verdichtergehäuses 12 gebildet sind und auf einer dem jeweiligen Schraubenläufer 26, 28 abgewandten Seite durch Lagergehäusedeckel 136, 138 abgeschlossen sind, so dass in den Lagergehäusen 116, 118 Schmiermittelkammern 142, 144 vorliegen, welchen das Schmiermittel zur Schmierung der Wälzlager 112, 114 zuzuführen ist.In order to be able to optimally lubricate the bearing
Diesen Schmiermittelkammern 142, 144 ist einerseits Schmiermittel in ausreichendem Maße zuzuführen, um eine zuverlässige und dauerhafte Schmierung der Wälzlager 112, 114 sicherstellen zu können, andererseits führt aber zu viel den Schmiermittelkammern 142, 144 zugeführtes Schmiermittel zu Plansch- und Quetschverlusten im Bereich der Wälzlager 112, 114, die die Leistungsaufnahme des Antriebsmotors 84 erhöhen und somit die Leistungszahl des Kältemittelverdichters verschlechtern.On the one hand, lubricant must be supplied to these
Daher ist es erforderlich, eine dosierte Zufuhr von Schmiermittel aus dem Schmiermittelverteilsystem 104 sicherzustellen.It is therefore necessary to ensure a metered supply of lubricant from the
Hierzu ist jedes der Lagergehäuse 116, 118 mit einer Schmiermitteldosiereinheit 152, 154 versehen, die beispielsweise in dem jeweiligen Lagergehäusedeckel 136, 138 integriert ist.For this purpose, each of the bearing
Die Funktion und Arbeitsweise der Schmiermitteldosiereinheiten 152, 154 wird nachfolgend exemplarisch anhand der Schmiermitteldosiereinheit 154, integriert im Lagergehäusedeckel 138, erläutert, wobei die entsprechenden Ausführungen für die Schmiermitteldosiereinheit 152, integriert im Lagergehäusedeckel 136, gelten.The function and mode of operation of the
Wie in
Ferner umfasst der Ringkörper 162 ein sich ausgehend von der Umfangsfläche 164 in diesen hineinerstreckende umlaufende Nut 174, die dazu dient, das von dem Schmiermittelverteilsystem 104 zugeführte Schmiermittel, beispielsweise zum Lagergehäusedeckel 138, weiterzuleiten.Furthermore, the
Die Schmiermitteldosiereinheit 154 umfasst bei dem in
Von der Filteraufnahmekammer 182 erstreckt sich, vorzugsweise koaxial zu dieser, ein Zulaufkanal 186 bis zum Innenraum 168.An
Beispielsweise sind hierbei die Filteraufnahmekammer 182 sowie der Zulaufkanal 186 als Bohrungen ausgeführt, wobei die Filteraufnahmekammer 182 bezogen auf eine Mittelachse 188 einen größeren Durchmesser aufweist als der sich an diese koaxial anschließende Zulaufkanal 186, so dass sich beim Übergang von der Filteraufnahmekammer 182 in den Zulaufkanal 186 eine Stufe 192 bildet, an welcher der Filterkörper 184 anliegt und durch welche der Filterkörper 184 gegen ein Wandern in den Innenraum 168 gesichert ist.For example, the
Der Filterkörper 184 ist vorzugsweise aus einem porösen Material hergestellt, so dass der Filterkörper 184 durch Auswahl der Porosität desselben als Strömungsdrossel für das zugeführte Schmiermittel wirkt und damit in der Lage ist, die Schmiermittelzufuhr in die entsprechende Schmiermittelkammer 144 so zu drosseln, dass ausreichend Schmiermittel, jedoch nicht zu viel Schmiermittel, der jeweiligen Schmiermittelkammer, in diesem Fall der Schmiermittelkammer 144, zugeführt wird.The
Der Filterkörper 184 kann aus unterschiedlichen Materialien ausgebildet sein.The
Eine Möglichkeit sieht vor, den Filterkörper 184 aus Sintermetall auszubilden, wobei hierzu Bronze oder rostfreier Stahl als Material verwendet werden können.One possibility provides for the
Eine andere Möglichkeit sieht vor, den Filterkörper 184 aus kältemittel- und schmiermittelneutralem Kunststoff auszubilden, wobei insbesondere ein gesinterter poröser Kunststoff, und/oder ein kompaktiertes verbackenes Kunststoffgranulat, eingesetzt werden kann.Another possibility provides for the
Bei dem ersten Ausführungsbeispiel der erfindungsgemäßen Schmiermitteldosiereinheit 154 wirkt dabei der sich an die Filteraufnahmekammer 182 anschließende Zulaufkanal 186 nicht strömungshindernd, sondern ist für die Frage der Dosierung der der Schmiermittelkammer 144 zugeführten Schmiermittelmenge irrelevant.In the first exemplary embodiment of the
Das Schmiermittel sammelt sich beispielsweise zumindest zum Teil dann in der Schmiermittelkammer 144 an der in Schwerkraftrichtung tiefsten Stelle in Form eines Schmiermittelbades 190 und tritt von dieser in das Wälzlager 114 über.The lubricant then collects, for example at least in part, in the
Bei einem zweiten Ausführungsbeispiel einer erfindungsgemäßen Schmiermitteldosiereinheit 154', dargestellt in
Bei einem dritten Ausführungsbeispiel einer erfindungsgemäßen Schmiermitteldosiereinheit 154", dargestellt in
In diesem Fall ist beispielsweise der Zulaufkanal 186 zum Innenraum 168 des Ringkörpers 162 hin verschlossen.In this case, for example, the
Bei einem zweiten Ausführungsbeispiel eines erfindungsgemäßen Schraubenverdichters, dargestellt in
Im Unterschied zum ersten Ausführungsbeispiel versorgt das Schmiermittelverteilsystem 104"' nicht nur die Lagereinheiten 62 und 64 sondern auch die Lagereinheiten 72 und 74 mit Schmiermittel.In contrast to the first exemplary embodiment, the
Wie in
Auf den den Hochdruckseiten 38 der Schraubenläufer 26, 28 gegenüberliegenden Seiten der Wandbereiche 232, 234 sitzen in die Aufnahmebohrungen 222, 224 eingesetzte Lagergehäuseringe 242, 244, welche somit zwischen den jeweiligen Wandbereichen 232, 234 und dem jeweils nächstliegenden Wälzlager 202 angeordnet sind.Bearing housing rings 242, 244, which are inserted into the receiving bores 222, 224, are located on the opposite sides of the high-
Derartige Lagergehäuseringe 242, 244 können entweder, wie in
Die Lagergehäuseringe 242, 244 begrenzen zwischen diesen und den nächstliegenden Wälzlagern 202 angeordnete Schmiermittelkammern 252, 254, von welchen ausgehend eine Schmiermittelzufuhr zu den Wälzlagern 202, 204 und 206, beispielsweise durch die jeweiligen Lager hindurch, erfolgt.The bearing housing rings 242, 244
Wie in
Ferner erstreckt sich ausgehend von der Umfangsfläche 264 in den Ringkörper 262 hinein eine Nut 274 in gleicher Weise wie bei den Lagergehäusedeckeln 136, 138.Furthermore, starting from the
Ferner erstreckt sich ausgehend von der Nut 274 die Filteraufnahmekammer 182 mit dem Filterkörper 184 und einem sich an die Filteraufnahmekammer 182 anschließenden Zulaufkanal 186, welcher in den Innenraum 266 des Lagergehäuserings 244 einmündet.Furthermore, starting from the
Ausgehend von der Nut 274, welche die gleiche Aufgabe hat, wie in Zusammenhang mit den Lagergehäusedeckeln 136, 138 beschrieben, ist somit in jedem der Lagergehäuseringe 242, 244 ebenfalls die Schmiermitteldosiereinheit 152, 154 vorgesehen, die die sich ausgehend von der Nut 274 in den Ringkörper 262 hinein erstreckende Filteraufnahmekammer 182 aufweist, in welche der Filterkörper 144 eingesetzt ist und von welcher ausgehend sich der Zulaufkanal 186 bis zum Innenraum 266 des Lagergehäuserings 244 erstreckt.Starting from the
Dabei ist die Schmiermitteldosiereinheit 152, 154 in gleicher Weise ausgebildet wie bei den voranstehenden Ausführungsbeispielen beschrieben und hat dieselbe Wirkung wie bei ebenfalls im Zusammenhang mit diesen Ausführungsbeispielen erläutert.The
Der Lagergehäusering 244 kann auch zwischen zwei der Wälzlager 202, 204, 206 eingesetzt werden.The bearing
Bei einem zweiten Ausführungsbeispiel des Lagergehäuserings 244', dargestellt in
Ein drittes Ausführungsbeispiel eines erfindungsgemäßen Lagerrings 244", dargestellt in
Im Übrigen ist das dritte Ausführungsbeispiel in gleicher Weise ausgebildet wie das zweite Ausführungsbeispiel, so dass auf dieses vollinhaltlich Bezug genommen wird.Otherwise, the third exemplary embodiment is designed in the same way as the second exemplary embodiment, so that reference is made in full to this.
Claims (11)
- Refrigerant compressor, particularly a rotary screw compressor, comprising a compressor housing (12), a compressor element (26, 28) which is arranged in the compressor housing (12) and is driven by a drive (84, 86, 66, 68, 76, 78), at least one bearing unit (62, 64, 72, 74) for at least one element (66, 68) of the drive (84, 86, 66, 68, 76, 78) which comprises at least one bearing housing (116, 118, 82) and at least one roller bearing (112, 114, 202, 204, 206) that is arranged in the bearing housing (116, 118, 82), wherein
a lubricant is supplied to the bearing housing (116, 118, 82) by a lubricant distribution system (104), and a lubricant dispensing unit (152, 154) is associated with the bearing housing (116, 118, 82), characterised in that the lubricant dispensing unit (152, 154) has a filter holding chamber (182) and in that a filter body (184) is arranged in the filter holding chamber (182). - A refrigerant compressor in accordance with Claim 1, characterized in that the lubricant dispensing unit (152, 154) comprises an inlet channel (186) which extends from the filter holding chamber (182) to a lubricant chamber (142, 144, 252, 254) adjoining the roller bearing (112, 114, 202).
- A refrigerant compressor in accordance with Claim 1 or 2, characterized in that the lubricant dispensing unit (152, 154) comprises a throttle boring (194) which is arranged between the filter holding chamber (182) and a lubricant chamber (142, 144, 252, 254) adjoining the roller bearing (112, 114, 202).
- A refrigerant compressor in accordance with any of the preceding Claims, characterized in that the lubricant dispensing unit (152, 154) is integrated into the bearing housing (116, 118, 82).
- A refrigerant compressor in accordance with Claim 4, characterized in that the bearing housing (116, 118, 82) comprises a housing element (136, 138, 242, 244) in which the lubricant dispensing unit (152, 154) is arranged.
- A refrigerant compressor in accordance with Claim 5, characterized in that the housing element is a bearing housing cover (136, 138) of the bearing housing (116, 118).
- A refrigerant compressor in accordance with Claim 5, characterized in that the housing element is a bearing housing ring (242, 244) of the bearing housing (82).
- A refrigerant compressor in accordance with any of the preceding Claims, characterized in that the lubricant dispensing unit (152, 154) supplies the lubricant to the lubricant chamber (142, 144, 252, 254).
- A refrigerant compressor in accordance with any of the preceding Claims, characterized in that the lubricant dispensing unit (152, 154) is provided with a nozzle boring (196) which is located after the filter holding chamber (182) and produces a jet of lubricant (198) that is directed onto the roller bearing (112, 114, 202) in the bearing housing (116, 118, 82).
- A refrigerant compressor in accordance with Claim 9, characterized in that the nozzle boring (196) simultaneously acts as a throttle boring of the lubricant dispensing unit (152, 154).
- A refrigerant compressor in accordance with any of the preceding Claims, characterized in that the compressor element is a screw rotor (26, 28) of a rotary screw compressor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102013106344.6A DE102013106344B4 (en) | 2013-06-18 | 2013-06-18 | Refrigerant compressor |
PCT/EP2014/062729 WO2014202611A1 (en) | 2013-06-18 | 2014-06-17 | Refrigerant condenser |
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EP3011181A1 EP3011181A1 (en) | 2016-04-27 |
EP3011181B1 true EP3011181B1 (en) | 2020-02-26 |
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EP14730912.4A Active EP3011181B1 (en) | 2013-06-18 | 2014-06-17 | Refrigerant condenser |
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US (1) | US10508839B2 (en) |
EP (1) | EP3011181B1 (en) |
CN (1) | CN105283669B (en) |
DE (1) | DE102013106344B4 (en) |
RU (1) | RU2659420C2 (en) |
WO (1) | WO2014202611A1 (en) |
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- 2014-06-17 CN CN201480033760.0A patent/CN105283669B/en active Active
- 2014-06-17 EP EP14730912.4A patent/EP3011181B1/en active Active
- 2014-06-17 WO PCT/EP2014/062729 patent/WO2014202611A1/en active Application Filing
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RU2659420C2 (en) | 2018-07-02 |
DE102013106344A1 (en) | 2014-12-18 |
DE102013106344B4 (en) | 2015-03-12 |
CN105283669B (en) | 2018-04-03 |
WO2014202611A1 (en) | 2014-12-24 |
US10508839B2 (en) | 2019-12-17 |
US20160097572A1 (en) | 2016-04-07 |
EP3011181A1 (en) | 2016-04-27 |
CN105283669A (en) | 2016-01-27 |
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