CN113482915A - Scroll compressor and oil-gas coarse separation device and oil-gas separation device thereof - Google Patents
Scroll compressor and oil-gas coarse separation device and oil-gas separation device thereof Download PDFInfo
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- CN113482915A CN113482915A CN202110766755.2A CN202110766755A CN113482915A CN 113482915 A CN113482915 A CN 113482915A CN 202110766755 A CN202110766755 A CN 202110766755A CN 113482915 A CN113482915 A CN 113482915A
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- 238000000926 separation method Methods 0.000 title claims abstract description 209
- 239000003921 oil Substances 0.000 claims abstract description 188
- 230000003068 static effect Effects 0.000 claims abstract description 43
- 238000007906 compression Methods 0.000 claims abstract description 33
- 230000006835 compression Effects 0.000 claims abstract description 32
- 239000010687 lubricating oil Substances 0.000 claims abstract description 25
- 239000010779 crude oil Substances 0.000 claims abstract 3
- 238000001816 cooling Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Classifications
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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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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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
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
本发明涉及涡旋式压缩机，尤其是一种涡旋式压缩机及其油气粗分离装置和油气分离装置，包括粗分离盖板、静盘、动盘和机身；机身内的下部设有油池；动盘和静盘之间形成压缩室；静盘的另一侧的端面上设置环形外圈和第一导气筋；环形外圈上设置粗分离盖板，使得环形外圈和粗分离盖板之间形成粗分离腔；环形外圈下部留有缺口，第一导气筋将缺口分为粗分离排气口和第一下油口；第一导气筋的开口朝向第一下油口，第一下油口连通油池并通过润滑油密封；第一导气筋中部设有连通压缩室的粗分离进气口。本专利环形外圈和第一导气筋均一体成型在静盘上，粗分离盖板固定安装在环形外圈上，保证气体通道在受到气体压力时的可靠性。
The invention relates to a scroll compressor, in particular to a scroll compressor and a crude oil and gas separation device and an oil and gas separation device thereof, comprising a coarse separation cover plate, a static plate, a moving plate and a fuselage; There is an oil pool; a compression chamber is formed between the moving plate and the static plate; an annular outer ring and a first air guide rib are arranged on the end face of the other side of the static plate; A coarse separation cavity is formed between the coarse separation cover plates; a gap is left in the lower part of the annular outer ring, and the first air guide rib divides the gap into a coarse separation exhaust port and a first lower oil port; the opening of the first air guide rib faces the first The lower oil port, the first lower oil port is connected to the oil pool and sealed by the lubricating oil; the middle part of the first air guide rib is provided with a coarsely separated air inlet that communicates with the compression chamber. The annular outer ring and the first air guide ribs of the patent are integrally formed on the static disk, and the rough separation cover plate is fixedly installed on the annular outer ring to ensure the reliability of the gas passage under gas pressure.
Description
Technical Field
The invention relates to a scroll compressor, in particular to a scroll compressor, an oil-gas crude separation device and an oil-gas separation device thereof.
Background
The scroll compressor mainly comprises control unit, motor part, compression part, and the compression part has a pair of scroll dish, and scroll compressor's main compression process is realized by the scroll dish, and the refrigerant becomes high temperature high pressure gas through the scroll dish compression, and high temperature high pressure gas discharges through the exhaust hole on the quiet whirlpool dish, and the circulation is discharged through the blast pipe again after regional to the motor. Liquid oil is often used during compressor operation for lubrication, sealing, and cooling needs. These oils lubricate the kinematic pairs, thus reducing friction and wear; meanwhile, the leakage quantity generated by the fit clearance is greatly reduced due to the existence of the lubricating oil; finally, the lubricating oil can cool key moving parts of the compressor, such as bearings, rotors, cylinders, and the like, thereby improving the operational reliability of the compressor. In the working process of the scroll compressor, high-temperature and high-pressure gas is full of the inner space of the compressor, and lubricating oil in the compressor can be taken away when the high-temperature and high-pressure gas circulates. Therefore, before the compressed gas is discharged, the gas needs to be subjected to oil-gas separation through an oil-gas separation device.
The prior scroll compressor, for example, the chinese utility model patent (publication No. CN211343344U, published: 20200825), discloses a horizontal scroll compressor with an oil-gas separation mechanism, which belongs to the technical field of intelligent equipment drive control, and comprises a fixed scroll, a movable scroll, an oil-gas separation device, an eccentric shaft, a housing, a stator, a rotor, a first bearing seat, a second bearing seat, a movable scroll bearing, an exhaust port, an intake pipe and an exhaust pipe; the oil-gas separation device comprises an inner cylinder, an outer cylinder, a spiral partition plate and a gas guide pipe, wherein the spiral partition plate is spirally arranged between the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the spiral partition plate divides the oil-gas separation cavity into spiral gas flow passages. The utility model discloses an oil gas flow in-process and the inner wall of outer barrel and the outer wall collision of interior barrel, condense into oil, oil is led back to compressor's oil storage intracavity, is shunted and lubricates the quick-wear parts of motion such as bearing frame bearing, movable scroll bearing, bearing frame friction pad and quiet dish friction pad, has strengthened scroll compressor moving stationarity and durability, reduces the frictional noise, has improved the life of the quick-wear part of motion.
The above scroll compressor has the following problems: during rough separation, gas acts on the spiral separation plate, although the path of gas flow is increased, the pressure of the gas flow on the spiral separation plate is improved, the spiral separation plate is not fixedly connected with the inner cylinder or the outer cylinder, and the spiral separation plate is deformed after being used for a long time, so that the size of a gas flow channel is influenced, and the separation effect is reduced.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a scroll compressor, a coarse oil-gas separation device and an oil-gas separation device thereof, in which a stationary disc seat and a first air guiding rib are integrally formed on a side of a stationary disc away from a scroll portion, a coarse separation cover plate is fixedly mounted on the stationary disc seat, a coarse separation cavity is formed between the stationary disc seat and the coarse separation cover plate, an annular airflow channel is formed between the stationary disc seat and the first air guiding rib, and airflow impinges on the stationary disc seat, the coarse separation cover plate and the first air guiding rib, so that oil is separated from gas and falls into an oil sump.
For the purpose of the invention, the following technical scheme is adopted for implementation:
an oil-gas coarse separation device of a scroll compressor comprises a coarse separation cover plate, a static disc, a movable disc and a machine body; the rough separation cover plate, the static disc and the movable disc are all positioned in the machine body; an oil pool is arranged at the lower part in the machine body; the static disc is fixedly arranged on the machine body; the movable disc is arranged on the vortex part at one side of the static disc in a matching way, and a compression chamber is formed between the movable disc and the static disc; an annular outer ring and a first air guide rib are arranged on the end face of the other side of the static disc; the annular outer ring is arranged along the outer edge of the static disc, and the rough separation cover plate is arranged on the annular outer ring, so that a rough separation cavity is formed between the annular outer ring and the rough separation cover plate; the first air guide rib is arc-shaped and is positioned in the annular outer ring; a gap is reserved at the lower part of the annular outer ring, and the first air guide rib divides the gap into a coarse separation exhaust port and a first lower oil port; the first lower oil port is positioned below the coarse separation exhaust port; the opening of the first air guide rib faces the first lower oil port, and the first lower oil port is communicated with the oil pool and sealed by lubricating oil; the middle part of the first air guide rib is provided with a rough separation air inlet communicated with the compression chamber, an air flow channel is formed between the outer side of the first air guide rib and the inner side of the annular outer ring, one end of the air flow channel is communicated with the rough separation air inlet, and the other end of the air flow channel is communicated to a rough separation exhaust port.
Preferably, a rough separation cover plate mounting hole is formed in the annular outer ring, and the rough separation cover plate is connected to the rough separation cover plate mounting hole through a bolt; the length of the first air guide rib along the axial direction of the static disc is the same as that of the annular outer ring.
Preferably, the first air guide rib forms an oil return seat and an air inlet seat; the oil return seat is arranged at the upper part of the static disc, and the air inlet seat is arranged at the lower part of the static disc; the air inlet seat divides the gap into a coarse separation exhaust port and a first lower oil port.
An oil-gas separation device of a scroll compressor comprises the oil-gas coarse separation device, an oil-gas fine separation component, a rear cover plate and a secondary separation cover plate; the secondary separation cover plate is positioned in the machine body; a rear cover plate is arranged at the tail part of the machine body, a secondary separation cavity is formed between the rear cover plate and the machine body, and the coarse separation exhaust hole is communicated with the secondary separation cavity; a second air guide rib is arranged on the end surface of the inner side of the rear cover plate, and a secondary separation cover plate is arranged on the second air guide rib; a cavity is formed between the second air guide rib and the secondary separation cover plate, a cavity air inlet communicated with the secondary separation cavity is formed in one side part of the second air guide rib, and a cavity air outlet penetrating through the rear cover plate is formed in the inner side of the second air guide rib; a second lower oil port is formed at the bottom of the second air guide rib;
an oil-gas separation seat is arranged on the outer side of the rear cover plate, an oil-gas fine separation component is arranged on the oil-gas separation seat, and a fine separation cavity is formed between the oil-gas fine separation component and the oil-gas separation seat; the fine separation cavity is provided with an air inlet end and an air outlet end; the gas inlet end of the fine separation cavity is communicated with the gas outlet of the cavity.
Preferably, the oil-gas fine separation assembly comprises an oil core rod, an oil core and an oil core cover; the lower part of the oil separation core rod is connected with a cavity air outlet; the oil core is coated on the outer side of the oil core rod, an oil core cover is arranged on the outer side of the oil core, and the oil core cover is arranged on the oil-gas separation seat.
Preferably, the static disc is provided with an oil return seat, an oil return hole is formed in the oil return seat, and the oil return hole is communicated with the compression chamber; the lower part of the oil-gas separation seat is provided with a one-way oil return assembly mounting hole penetrating through the rear cover plate, a one-way oil return assembly is arranged in the one-way oil return assembly mounting hole, and the outlet end of the one-way oil return assembly penetrates through the oil return hole and extends into the compression chamber.
Preferably, the second air guide rib is provided with a secondary separation cover plate mounting hole, and the secondary separation cover plate is fixedly mounted on the secondary separation cover plate mounting hole through a bolt.
Preferably, the outlet end of the fine separation chamber is provided with a minimum pressure valve; the minimum pressure valve is mechanical.
A scroll compressor comprises the oil-gas separation device, a cross slip ring, an oil seal assembly, a crankshaft, an air inlet connecting piece, an air inlet valve assembly and a motor; the movable disc is connected with the machine body through a cross slip ring; the center of the movable disc is connected with an eccentric shaft section on the crankshaft, the middle part of the crankshaft is rotatably arranged on a crankshaft connecting hole in the middle part of the machine body through a bearing, and an oil seal assembly is arranged between the crankshaft and the machine body; the tail end of the crankshaft is arranged in the motor; an air inlet valve component is arranged on the outer side face of the rear cover plate, an air inlet connecting piece is arranged at a position, corresponding to the air inlet valve component, on the inner side face of the rear cover plate, the air inlet connecting piece sequentially penetrates through the secondary separation cover plate and the coarse separation cover plate to be connected with an air inlet on the static disc, and the air inlet is communicated with the compression chamber.
Preferably, the lower part of the machine body is provided with an oil outlet communicated with the oil pool and a return channel for returning cooled lubricating oil; the return channel is provided with a return oil inlet, a first return outlet and a second return outlet; the static disc is provided with a cooling oil channel, and an inlet of the cooling oil channel is communicated with the first backflow port; the outlet of the cooling oil channel is positioned in the compression chamber; the second backflow outlet is arranged on a crankshaft connecting hole in the middle of the machine body; a radiator is arranged between the machine body and the motor; the outer side of the radiator is circumferentially provided with an air inlet, and the inner side of the radiator is circumferentially provided with an air outlet; a plurality of radiating fins are arranged in the radiator, an oil duct is arranged between the radiating fins, an oil inlet of the oil duct is communicated with an oil outlet, and an oil outlet of the oil duct is communicated with a return oil inlet; the inner side of the radiator is provided with a fixing support which is of a hollow structure; one side of the fixing support is fixedly connected with the machine body, and the shape of the side is matched with the shape of the inner side of the radiator; the other side of the fixed support is provided with a connecting flange which is fixedly arranged on a shell of the motor; a plurality of radial air outlets are arranged on the periphery of the connecting flange; the crankshaft is provided with fan blades at the connecting flange.
In conclusion, the invention has the advantages that: the static disc seat and the first air guide ribs are integrally formed on the static disc, and the rough separation cover plate is fixedly arranged on the static disc seat, so that the reliability of the air channel under the pressure of air is ensured; the airflow channel is designed to be arc-shaped, so that the path of the airflow can be effectively prolonged, and the effect of coarse separation is improved.
Drawings
Fig. 1 is a schematic structural view of a scroll compressor.
Fig. 2 is an exploded view of the scroll compressor.
Fig. 3 is a schematic structural view of the side of the static disc far away from the vortex portion.
Fig. 4 is a schematic view of the structure on the side of the fixed scroll.
Fig. 5 is a schematic structural diagram of a rough separation cover plate and a static disc.
FIG. 6 is a schematic diagram of a crude separation process.
Fig. 7 is a schematic structural view of the rear cover plate and the secondary separation cover plate.
FIG. 8 is a schematic diagram of the secondary separation process.
Fig. 9 is a schematic structural view of the outer side of the rear cover plate.
Fig. 10 is a schematic structural view of the rear cover plate and components mounted thereon.
Fig. 11 is a cross-sectional view taken at a-a in fig. 10.
Fig. 12 is a schematic view of the structure of the interior of the fuselage.
Fig. 13 is a schematic view of the structure of the exterior of the fuselage.
Fig. 14 is an exploded view of the heat sink, the fixing bracket, the connecting flange, the fan blade, and the crankshaft.
Detailed Description
As shown in fig. 1 to 6, the oil-gas rough separation device of the scroll compressor comprises a rough separation cover plate 5, a static disc 6, a movable disc 7 and a machine body 9. The rough separation cover plate 5, the static disc 6 and the movable disc 7 are all positioned in the machine body 9. An oil pool is arranged at the lower part in the machine body 9. The static disc 6 is fixedly arranged on the machine body 9. The movable disc 7 is arranged on the vortex part at one side of the static disc 6 in a matching way, and a compression chamber is formed between the movable disc 7 and the static disc 6. And an annular outer ring 601, a first air guide rib 602, an oil return seat 603 and an air inlet seat 604 are arranged on the end surface of the other side of the static disc 6. The annular outer ring 601 is arranged along the outer edge of the static disc 6, a rough separation cover plate mounting hole 6011 is formed in the annular outer ring 601, and the rough separation cover plate 5 is connected to the rough separation cover plate mounting hole 6011 through bolts 20. A coarse separation chamber is formed between the annular outer ring 601 and the coarse separation cover plate 5. The first air guiding ribs 602 are arc-shaped and located inside the annular outer ring 601, and the length of the first air guiding ribs 602 in the axial direction of the static disc 6 is the same as that of the annular outer ring 601, so that the rough separation cover plate 5 is simultaneously in contact with the annular outer ring 601 and the first air guiding ribs 602, and a unique air flow channel is defined. The oil return seat 603 and the air intake seat 604 are formed by the first air guiding rib 602. The oil return seat 603 is provided on the upper portion of the stationary platen 6, and the air intake seat 604 is provided on the lower portion of the stationary platen 6. A gap is reserved at the lower part of the annular outer ring 601, and the air inlet seat 604 or the first air guide rib 602 divides the gap into a coarse separation exhaust port 605 and a first lower oil port 606. The opening of the first air guiding rib 602 faces the first lower oil port 606, and the first lower oil port 606 is communicated with the oil pool and sealed by lubricating oil. The middle part of the first air guiding rib 602 is provided with a rough separation air inlet 607 communicated with the compression chamber, an air flow channel is formed between the outer side of the first air guiding rib 602 and the inner side of the annular outer ring 601, one end of the air flow channel is communicated with the rough separation air inlet 607, and the other end is communicated to a rough separation air outlet 605.
During rough separation, gas in the compression chamber enters the rough separation cavity through the rough separation gas inlet 607 and moves to the outer side of the first gas guiding rib 602 along the inner side of the first gas guiding rib 602, and under the guidance of the first gas guiding rib 602, gas flows clockwise around a gas flow channel between the first gas guiding rib 602 and the annular outer ring 601 and is finally discharged from the rough separation gas outlet 605. The lubricating oil in the gas falls on the coarse separation cover plate 5 and the first air guiding rib 602, and finally flows back to the oil pool under the action of gravity.
As shown in fig. 1 to 11, the oil-gas separation device of a scroll compressor comprises the oil-gas coarse separation device, an oil-gas fine separation assembly 1, a rear cover plate 2 and a secondary separation cover plate 3. The secondary separation cover plate 3 is positioned in the machine body 9. The afterbody of fuselage 9 passes through bolt fastening and is provided with back shroud 2, forms the secondary separation chamber between back shroud 2 and the fuselage 9, and coarse separation exhaust hole 605 and secondary separation chamber intercommunication. The inner side end face of the rear cover plate 2 is provided with a circular arc-shaped second air guide rib 201, the second air guide rib 201 is provided with a secondary separation cover plate mounting hole 2011, and the secondary separation cover plate 3 is fixedly mounted on the secondary separation cover plate mounting hole 2011 through bolts. A cavity is formed between the second air guiding rib 201 and the secondary separation cover plate 3, a cavity air inlet 202 communicated with the secondary separation cavity is arranged at one side part of the second air guiding rib 201, and a cavity air outlet 203 penetrating through the rear cover plate 2 is arranged at the inner side of the second air guiding rib 201. A second lower oil port 206 is arranged at the bottom of the second air guiding rib 201. The lubricating oil after the secondary separation flows back to the oil pool through the second air guide rib 201 and the secondary separation cover plate 3.
In the secondary separation process, gas enters the secondary separation cavity from the coarse separation exhaust hole 605, moves clockwise along the outer side of the second air guide rib 201, enters the cavity through the cavity air inlet 202, continues to flow along the inner side of the second air guide rib 201, and finally enters the cavity air outlet 203. The lubricating oil in the gas flows into the oil pool under the action of the secondary separation cover plate 3 and the second air guide rib 201. The shape of the second air guiding rib 201 can effectively prolong the flowing path of air, and the oil-gas separation effect is improved.
As shown in fig. 9 to 11, an oil-gas separation seat 204 is disposed on the outer side of the rear cover plate 2, an oil-gas fine separation assembly 1 is disposed on the oil-gas separation seat 204, and a fine separation cavity is formed between the oil-gas fine separation assembly 1 and the oil-gas separation seat 204. The fine separation cavity is provided with an air inlet end and an air outlet end. The gas inlet end of the fine separation cavity is communicated with the cavity gas outlet 203. The outlet end of the fine separation chamber is provided with a minimum pressure valve 17, the minimum pressure valve 17 is mechanical, and when the pressure at the outlet end reaches the rated pressure, the minimum pressure valve 17 is opened to start air exhaust. The oil-gas fine separation assembly 1 includes an oil core rod 101, an oil core 102, and an oil core cover 103. The lower part of the oil content core rod 101 is connected with a cavity air outlet 203. The oil core 102 is coated on the outer side of the oil core rod 101, and the oil core 102 is made of cotton. An oil core cover 103 is arranged outside the oil core 102, and the oil core cover 103 is arranged on an oil-gas separation seat 204. The oil return seat 603 is provided with an oil return hole 6031. The lower part of the oil-gas separation seat 204 is provided with a one-way oil return component mounting hole 205 penetrating through the inner side and the outer side of the rear cover plate 2, a one-way oil return component 4 is arranged in the one-way oil return component mounting hole 205, the tail end of the one-way oil return component 4 penetrates through the oil return hole 6031 to extend into the compression chamber, and the one-way oil return component 4 is used for guiding the finely separated lubricating oil back to the compression chamber. The one-way oil return component 4 is internally provided with a small hole for installing a one-way valve, and the outer wall of the one-way oil return component is provided with four O-shaped ring installation grooves and a limit step.
During fine separation, gas enters the oil-gas fine separation assembly 1 from the cavity gas outlet 203 and moves along the oil content core rod 101, the gas is filtered under the action of the oil content core 102, the filtered gas enters an outlet of the fine separation cavity, and when the pressure at the outlet reaches the rated pressure, the minimum pressure valve 17 is opened to start exhausting. The filtered oil flows down to the inlet of the one-way oil return assembly 4 and returns to the compression chamber under the negative pressure of the compression chamber.
This oil-gas separation device has following advantage:
1. gas discharged from the compression chamber sequentially passes through the coarse separation cavity, the secondary separation cavity, the cavity and the fine separation cavity, and the gas is filtered for multiple times through the separation cavities, so that the oil-gas separation effect is improved; the gas guiding ribs are arranged in the coarse separation cavity, the secondary separation cavity and the cavity, so that the gas flowing path is prolonged, and the oil-gas separation effect is further improved; in the rough separation cavity, the secondary separation cavity and the cavity, the separated oil flows back to the oil pool under the action of gravity. In the fine separation chamber, the filtered oil flows back into the compression chamber under the effect of the negative pressure in the compression chamber.
2. The oil gas barrel is omitted, so that the structure of the machine is more compact, the complex pipe network structure is omitted, the number of easily damaged parts of the machine is reduced, and the maintenance cost of the machine is reduced.
3. Lubricating oil is short in the inside circulation route of aircraft nose, has reduced the quantity of lubricating oil, improves lubricating oil availability factor, and lubricating oil is little with air area of contact in the aircraft nose moreover, has reduced the probability that lubricating oil takes place the emulsification.
4. The structure inside the machine head has a sound absorption effect, and the noise of the whole machine is obviously reduced.
5. The use amount of electronic control elements is reduced, and the failure rate and the manufacturing cost of the whole machine are reduced.
As shown in fig. 1 to 14, a scroll compressor includes the above-described oil-gas separating device, as well as the oldham ring 8, the oil seal assembly 13, the crankshaft 15, the intake port connection 16, the intake valve assembly 19, and the motor 21. The movable disc 7 is connected with the machine body 9 through a cross sliding ring 8. The center of the movable disc 7 is connected with an eccentric shaft section on a crankshaft 15, the middle part of the crankshaft 15 is rotatably arranged on a crankshaft connecting hole 93 in the middle part of the machine body 9 through a bearing 12, an oil seal assembly 13 is arranged between the crankshaft 15 and the machine body 9, and the oil seal assembly 13 is used for sealing lubricating oil in the machine body 9. The end of the crankshaft 15 is disposed within a motor 21, and the crankshaft 15 is driven by the motor 21. An air inlet valve assembly 19 is arranged on the outer side face of the rear cover plate 2, an air inlet connecting piece 16 is arranged at a position, corresponding to the air inlet valve assembly 19, on the inner side face of the rear cover plate 2, the air inlet connecting piece 16 penetrates through the secondary separation cover plate 3 and the coarse separation cover plate 5 to be connected with an air inlet seat 604 on the static disc 6, an air inlet 6041 communicated with a compression chamber is arranged on the air inlet seat 604, and the air inlet connecting piece 16 is used for conveying air led in by the air inlet valve assembly 19 inwards into the compression chamber. An oil sight glass 18 for observing the liquid level of an oil pool in the body 9 and a pressure gauge 22 for detecting the air pressure in the body 9 are arranged on the rear cover plate 2. The top of the body 9 is provided with a temperature sensor 10 and a hanging ring 11.
As shown in fig. 12 and 13, the lower portion of the body 9 is provided with an oil outlet 91 communicating with the oil sump and a return passage 92 for returning the cooled lubricating oil. The return passage 92 is provided with a return oil inlet 921, a first return outlet 922 and a second return outlet 923. As shown in fig. 3 to 5, the stationary platen 6 is provided with a cooling oil passage 608, an inlet 6081 of the cooling oil passage 608 is communicated with the first backflow port 922, an outlet 6082 of the cooling oil passage 608 is located in the compression chamber, and the cooling oil passage 608 is used for introducing the cooled lubricating oil into the compression chamber. The second return outlet 923 is provided in the crankshaft connection hole 93 in the middle of the body 9 to supply the cooled lubricant to the crankshaft 15 and the bearings 12 thereof.
As shown in fig. 14, a heat sink 14 is provided between the body 9 and the motor 21. The outer circumference of the radiator 14 is an air inlet, and the inner circumference is an air outlet. A plurality of radiating fins are arranged in the radiator 14, oil passages are arranged among the radiating fins, oil inlet holes 1401 of the oil passages are communicated with the oil outlet 91, and oil outlet holes 1402 of the oil passages are communicated with the return oil inlet 921. Since the pressure at the compression chamber and the crankshaft connecting hole 93 is lower than the pressure in the body, the oil in the oil sump enters the oil passage through the oil outlet 91, and the lubricating oil entering the oil passage is cooled by the heat radiating fins and then discharged from the oil outlet 1402 back to the return passage 92. Because the radiator is annular, the path of the oil duct is prolonged, and the cooling of lubricating oil is facilitated.
The fixing bracket 23 is provided inside the heat sink 14, and the fixing bracket 23 has a hollow structure. One side of the fixing bracket 23 is fixedly connected with the body 9, and the shape of the side is matched with the shape of the inner side of the radiator 14. The other side of the fixing bracket 23 is provided with a connecting flange 24, and the connecting flange 24 is fixedly arranged on the shell of the motor 21. A plurality of radial air outlets 2401 are provided on the outer periphery of the connecting flange 24. The crankshaft 15 is provided with fan blades 25 at the connecting flange 24.
During operation, the crankshaft 15 drives the compressor head and the fan blade 25 to operate simultaneously, a low-pressure area is formed in the compressor head and a crankshaft connecting hole 93 of the compressor chamber, and a high-pressure area is formed in the machine body, so that lubricating oil in the compressor head enters the inside of the radiator 14 under the action of pressure difference, air on the inner side of the radiator 14 is pumped out by the fan blade 25, cold air enters the inner side of the radiator from the periphery of the radiator 14 to cool oil in the radiator 14, hot air is discharged from the radial air outlet 2401, and the cooled lubricating oil flows back to the inside of the compressor head.
The advantage of the heat dissipation structure is that the fan blades 25 are directly arranged on the crankshaft 15, so that the heat sink 14 and the machine head synchronously act. The radiator 14 is annular, and increases the cooling path of oil, and improves the heat radiation effect.
Claims (10)
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| CN202110766755.2A CN113482915A (en) | 2021-07-07 | 2021-07-07 | Scroll compressor and oil-gas coarse separation device and oil-gas separation device thereof |
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| CN202110766755.2A CN113482915A (en) | 2021-07-07 | 2021-07-07 | Scroll compressor and oil-gas coarse separation device and oil-gas separation device thereof |
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| CN113482916A (en) * | 2021-07-07 | 2021-10-08 | 鑫磊压缩机股份有限公司 | Scroll compressor and oil-gas separation device thereof |
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