CN208348059U - Screw compressor and refrigerating circulatory device with it - Google Patents
Screw compressor and refrigerating circulatory device with it Download PDFInfo
- Publication number
- CN208348059U CN208348059U CN201820831882.XU CN201820831882U CN208348059U CN 208348059 U CN208348059 U CN 208348059U CN 201820831882 U CN201820831882 U CN 201820831882U CN 208348059 U CN208348059 U CN 208348059U
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- bearing
- oil
- crankshaft
- eccentric shaft
- screw compressor
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- 239000003921 oil Substances 0.000 claims abstract description 213
- 239000007789 gas Substances 0.000 claims abstract description 99
- 230000006835 compression Effects 0.000 claims abstract description 69
- 238000007906 compression Methods 0.000 claims abstract description 69
- 239000010687 lubricating oil Substances 0.000 claims abstract description 39
- 238000005461 lubrication Methods 0.000 claims abstract description 25
- 239000000446 fuel Substances 0.000 claims description 33
- 238000007667 floating Methods 0.000 claims description 32
- 230000002093 peripheral effect Effects 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 29
- 238000005096 rolling process Methods 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 12
- 238000005057 refrigeration Methods 0.000 description 11
- 239000007921 spray Substances 0.000 description 8
- 230000000149 penetrating effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000006071 cream Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Abstract
The utility model discloses a kind of screw compressor and with its refrigerating circulatory device, the electric motor being made of stator and rotor etc. has been stored in the screw compressor seal casinghousing, the compression mechanical part driven by the electric motor, lubricate the lubricating oil of the compression mechanical part, the compression mechanical part has price fixing and Moving plate, the fixed crankshaft with the rotor, between the Moving plate and the rotor, the first bearing being slidably connected with the crankshaft, the oil-containing gases being discharged from the compression chamber being made up of the price fixing and the Moving plate, at least lubricate the sliding surface of the crankshaft and the first bearing.Screw compressor according to the present utility model can ensure that uniformly, rapidly lubrication arrives modified fluoromaterial to lubricating oil.
Description
Technical field
The utility model, with shell internal pressure as the screw compressor of high pressure modified fluoromaterial lubrication in import it is new
Fuel system and lubricating system it is related.For the droplet lubrication for using the former centrifugation oil feed pump of crank up to generate, this is practical
The oil foglubrication that the novel oil-containing gases using the high pressure being discharged from compression chamber generate.
Background technique
The lubrication of previous screw compressor, crankshaft and Moving plate etc., using using crank up centrifugal oil feed pump or
Forcing pump.Moreover, being discharged in shell from the high pressure gas (refrigerant) that compression chamber is discharged, lubricating oil contained by high pressure gas is returned
Receive housing bottom.Unrenewable lubricating oil, is discharged together with high pressure gas, becomes one week oil drain quantity of refrigeration cycle.
The screw compressor being carried on air-conditioning etc., when starting, low outer temperature operating, defrosting operate, run at high speed etc.
Refrigerant circulation, under the more operation mode (referred to as unstable operating) more than common several times, refrigeration cycle is arrived in generation
A large amount of oil drain quantities.Oil drain quantity under steady running is about the 1% of circulating refrigerant amount；But under unstable operating, circulating refrigerant amount
5~15% become oil drain quantity.The phenomenon continues 15 minutes or more, and the scarcity of lubricants capacity, leads to centrifugal pump in shell therebetween
Fuel delivery decline, the main reason for becoming compressor fault.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
A kind of screw compressor out, the screw compressor can ensure that uniformly, rapidly lubrication arrives modified fluoromaterial to lubricating oil.
The utility model also proposed a kind of refrigerating circulatory device with above-mentioned screw compressor.
According to the screw compressor of the utility model embodiment, stores in seal casinghousing and be made of stator and rotor etc.
Electric motor, the compression mechanical part driven by the electric motor, the lubricating oil for lubricating the compression mechanical part, the compressor
Structure portion has price fixing and Moving plate, the fixed crankshaft with the rotor, positioned at the Moving plate and the rotor between and the crankshaft
The first bearing being slidably connected, the oil-containing gases being discharged from the compression chamber being made up of the price fixing and the Moving plate, at least moistens
The sliding surface of the sliding crankshaft and the first bearing.
Screw compressor according to the present utility model, it is intracorporal to capsul by the oil-containing gases using compression chamber discharge
Modified fluoromaterial is lubricated the lubrication, it can be achieved that in small glade plane space, lubricating uniform, sufficiently, while can also be in whole fortune
Under the conditions of turning, the oil concentration of oil-containing gases is sufficiently maintained, guarantees that oil mass is sufficient.
According to the screw compressor of the utility model one embodiment, in axis of the oil-containing gases via the crankshaft,
At least lubricate the first bearing.
According to the screw compressor of the utility model one embodiment, across the rotor, with the first bearing phase
Pair position on configure second bearing, the oil-containing gases at least lubricate the crankshaft, the first bearing and second axis
The sliding surface held.
According to the screw compressor of the utility model one embodiment, has the connection compression chamber or be connected to the pressure
One of any and lubricating oil of the low tension loop of contracting chamber, and oiling is to the pipeline of the compression chamber.
Optionally, the outer diameter of the crankshaft and the internal diameter of at least one of the first bearing and the second bearing it
Between, have rolling bearing.
According to the screw compressor of the utility model one embodiment, the rotating shaft of the crankshaft is disposed vertically or horizontally.
According to the screw compressor of the utility model one embodiment, gas vent, institute are provided at the center of the price fixing
The through hole for being formed with inside crankshaft and being connected to the gas vent is stated, the first master for penetrating through the wall is offered on the wall of the crankshaft
Shafting oil hole is additionally provided with main shaft oil groove corresponding with the base bearing on the outer peripheral surface of the crankshaft, wherein first main shaft
Oilhole is connected to the through hole and the main shaft oil groove.
Further, the screw compressor further include: for supporting the second bearing of the crankshaft, the second bearing
It is located at the two sides of the rotor with the first bearing, the second main shaft for penetrating through the wall is also provided on the wall of the crankshaft
Oilhole, for the second main shaft oilhole towards the inner peripheral surface of the second bearing, the second main shaft oilhole will be in the through hole
Lubricating oil guide to the inner peripheral surface of the second bearing.
According to the screw compressor of the utility model one embodiment, gas vent, institute are provided at the center of the price fixing
The through hole for being formed with inside crankshaft and being connected to the gas vent is stated, the crankshaft has eccentric shaft, is arranged on the eccentric shaft
There is eccentric shaft oilhole, the radial inner end of the eccentric shaft oilhole is connected to the through hole；
The surface away from the price fixing of the Moving plate is provided with floating bearing, and the rotating shaft bearing sleeve is in the eccentric shaft
On, the inner peripheral surface of radial outer end towards the floating bearing of the eccentric shaft oilhole opens wide, and the outer peripheral surface of the eccentric shaft is set
It is equipped with eccentric shaft oil groove, the eccentric shaft oil groove is connected to the radial outer end of the eccentric shaft oilhole.
Further, the eccentric shaft oil groove is along two end faces for axially extending to the eccentric shaft of the crankshaft.
Optionally, floating bearing oilhole is provided on the floating bearing, the floating bearing oilhole penetrates through the revolution
The inner peripheral surface and outer peripheral surface of bearing, the floating bearing oilhole the crankshaft radially with the eccentric shaft oilhole face.
Optionally, shaft end closure, the shaft end envelope are provided in one end for being provided with the second bearing of the crankshaft
The shaft end stomata for being provided with and being connected to the through hole is blocked, the shaft end, which blocks, is further fixedly arranged on oil separation plectane, described
Oil separation plectane is rotated perpendicular to the crankshaft and with the crankshaft-synchronous, and the shaft end stomata prolongs along the radial direction of the crankshaft
It stretches.
According to the screw compressor of the utility model one embodiment, the electric motor is located at the compression mechanical part
Top, the screw compressor further include oil fuel tube, and the upper end of the oil fuel tube is connected to the compression chamber and lower end and the pressure
Oil storage tank connection below contracting mechanism part；
Or the electric motor is located at the lower section of the compression mechanical part, the screw compressor further includes oil fuel tube,
The upper end of the oil fuel tube is connected to the compression chamber of the compression mechanical part, and the lower end of the oil fuel tube is connected to the seal casinghousing
The main part of interior oil storage tank, the oil fuel tube passes through the compression mechanical part and the electric motor.
According to the screw compressor of the utility model one embodiment, gas vent, institute are provided at the center of the price fixing
State the axle center hole for being formed with inside crankshaft and being connected to the gas vent, the lower end of the axle center hole be connected to the gas vent and on
End seal is closed, and the crankshaft has eccentric shaft, is provided with eccentric shaft oilhole on the eccentric shaft, the diameter of the eccentric shaft oilhole is inside
End is connected to the axle center hole；
The surface away from the price fixing of the Moving plate is provided with floating bearing, and the rotating shaft bearing sleeve is in the eccentric shaft
On, the inner peripheral surface of radial outer end towards the floating bearing of the eccentric shaft oilhole opens wide, and the outer peripheral surface of the eccentric shaft is set
It is equipped with eccentric shaft oil groove, the eccentric shaft oil groove is connected to the radial outer end of the eccentric shaft oilhole.
Optionally, offered on the wall of the crankshaft penetrate through the wall the first main shaft oilhole, the first bearing with it is described
It is provided with rolling bearing between crankshaft, the rolling bearing is multiple and along the crankshaft axially spaced arrangements, described the
One main shaft oilhole is corresponding with rolling bearing described in one of them.
The whirlpool any just like first aspect is arranged in the refrigerating circulatory device of second aspect according to the present utility model
Compressor is revolved, further includes condenser, expansion device and evaporator.The refrigerating circulatory device is opposite with above-mentioned screw compressor
The advantage possessed by the prior art is identical, and details are not described herein.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structural schematic diagram according to the screw compressor of the utility model the first embodiment；
Fig. 2 is the enlarged drawing of compression mechanical part in Fig. 1；
Fig. 3 is the structural schematic diagram according to the screw compressor of second of embodiment of the utility model；
Fig. 4 is the structural schematic diagram according to the screw compressor of the utility model the third embodiment；
Fig. 5 is the structural schematic diagram according to the screw compressor of the 4th kind of embodiment of the utility model.
Appended drawing reference:
Vertical vortex 101 (102,103), horizontal type scroll compressor 104, shell 2, motor cavity of resorption 2a, on motor
Chamber 2b, exhaust pipe 3, air intake duct 4, compression mechanical part 5, electric motor 6, stator 7, electrical-coil 7a, stator circumferential groove 7b, rotor
8, lubricating oil 9, base bearing 10, base bearing space 10a, base bearing circumferential groove 11a, first bearing 12, compression chamber 13, oil storage tank
14, price fixing 15, oil fuel tube 16, capillary 16a, Moving plate 18, gas vent 18b, floating bearing 19, slew bearing apertures 19a, crankshaft
20, main shaft 21, main shaft oilhole 21a, main shaft oil groove 21c, eccentric shaft 22, eccentric shaft oilhole 22a, eccentric shaft oil groove 22b, through hole
23, hole bolt 23a, check valve 25, bolt 28, shaft end stomata 28a, thin footpath hole 29, second bearing 30, second bearing plate 31, gas are logical
Mouth 31a, oil separation plectane 33, cruciform arrangement 37, bearing clearance 38, rolling bearing 40, shaft end chamber 45a, intermediate cavity 45b, storage
Oil pocket 45c, axle center hole 47, condenser 50, expansion valve 51, evaporator 52, fluid reservoir 53.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " axis
To ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, define " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the utility model
In, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Implementation form 1:
Fig. 1 and vertical vortex shown in Fig. 2 101 have the electric motor 6 for 2 inner circumferential of shell for being fixed on sealing
Lubricating oil 9 is enclosed with the oil storage tank 14 of compression mechanical part 5,2 bottom of shell.Electric motor 6 is by the stator fixed with 2 inner circumferential of shell
7, the rotor 8 for being fixed on crankshaft 20, the electrical-coil 7a assembled by stator 7 are constituted.Electric motor 6 divide motor cavity of resorption 2a and
Motor epicoele 2b is high pressure chest.
The compression mechanical part 5 driven by the rotor 8 of electric motor 6, by being fixed on 2 inner circumferential of shell, central part configuration first
The base bearing 10 of bearing 12 is fixed on the price fixing 15 of 10 lower part of base bearing, connects above with it, revolves simultaneously with floating bearing 19
Moving plate 18, be slidably fitted in crankshaft 20 inside first bearing 12 and constitute.
Crankshaft 20 is made of the eccentric shaft 22 that main shaft 21, its lower end configure.Eccentric shaft 22 is slidably matched with floating bearing 19.
The lower end for penetrating through the through hole 23 at 20 center of crankshaft, is connected to the gas vent 18b of Moving plate 18.Check valve 25 is for switching gas vent
18b, cruciform arrangement 37 can limit the rotation of Moving plate 18.Due to the presence of base bearing circumferential groove 11a, the pressure etc. of oil storage tank 14
The high pressure being same as inside shell 2.
The outer peripheral surface for the main shaft 21 being slidably matched with first bearing 12 is provided with spiral helicine main shaft oil groove 21c.Its lower end
It is connected to main shaft oilhole 21a, main shaft oilhole 21a aperture is in through hole 23；Between 8 lower part of 12 top of first bearing and rotor
Hole is opened up, the oil-containing gases of lubrication first bearing 12 can be discharged from the hole.As the design of substitution main shaft oil groove 21c, that is, configure
It can also in the oil groove of 12 internal diameter of first bearing.
The upper end of main shaft 21 is slidably matched with second bearing 30.Therefore, main shaft 21 and first bearing 12 and second bearing 30
Sliding.Second bearing 30 is fixed on the inner peripheral surface of shell 2, and second bearing plate 31 by having gas port 31a supports.
In the upper end of through hole 23, tool is pressed into there are two the bolt 28 of shaft end stomata 28a, the upper end fixing oil of bolt 28 separates plectane 33.
Below the price fixing 15 being connected with air intake duct 4, it is connect with the oil fuel tube 16 of thin footpath.The upper end of oil fuel tube 16, aperture
One in the compression chamber 13 (Fig. 2) constituted by price fixing 15 and Moving plate 18, lubricating oil of the lower end aperture in oil storage tank 14
9.Injection flow in compression chamber 13, by the pressure difference of the pressure (middle pressure) of lubricating oil 9 (high pressure) and compression chamber 13, oil fuel tube 16 it is interior
The viscosity of diameter resistance and lubricating oil 9 determines.
Preset pressure is injected by low-pressure gas (refrigerant) that air intake duct 4 sucks and the lubricating oil 9 sucked by oil fuel tube 16
Contracting chamber 13.During multiple compression chambers are compressed, the oil-containing of the mixed high pressure of lubricating oil of gas and spray form is sucked
Gas is discharged to through hole 23 by the circumferential play of gas vent 18b and check valve 25.Here, the lubricating oil of spray form, fixed
Justice is " spray oils ", and the lubrication that spray oils generate is defined as " oil foglubrication ".
To the injection flow of compression chamber 13, the ratio of refrigeration cycle refrigerant circulation when according to steady running is set in advance,
For example, being 3% injection flow according to refrigerant circulation ratio.At this point, from the oil drain quantity of exhaust pipe, according to refrigerant circulation
Ratio is measured, if it is 1%, then the oil mass in the oil-containing gases from gas vent 18b just becomes 4%.Above-mentioned injection flow, needs
It is determined according to the machine for carrying compressor.
The oil-containing gases of the high pressure of through hole 23 are discharged to, direction and perforation to the base bearing space 10a of base bearing 10
The direction in hole 23 shunts such as first and shunts and the second shunting.The eccentric shafting oil that the eccentric shaft 22 of 10a configures in base bearing space
The oil-containing gases that first flowed on the 22a of hole shunts, when by eccentric shaft oil groove 22b, oil foglubrication eccentric shaft 22 and rotating shaft
Hold 19 sliding surface.Whole faces of the planar slide of oil-containing gases oil foglubrication cruciform arrangement 37, Moving plate 18 and price fixing 15,
The spray oils of a part flow into the low pressure chamber of compression chamber 13.
The spray oils for flowing into low pressure chamber, and low-pressure gas interflow suck from air intake duct 4, and with inject from oil fuel tube 16
Lubricating oil 9 collaborates, and becomes the oil-containing gases of high pressure, is discharged to through hole 23 from gas vent 18b.That is, the first shunting
A part of lubricating oil 9, recycling become oil-containing gases.By increasing the quantity of slew bearing apertures 19a, the can be increased
The one oily scale of construction shunted.
At the same time, a part of the oil-containing gases of the second high pressure shunted is arranged by main shaft oilhole 21a from the upper end
Motor cavity of resorption 2a is arrived out.Therebetween, whole sliding surfaces of oil-containing gases oil foglubrication crankshaft 21 and first bearing 12.
Then, from the oil-containing gases for passing through through hole 23 above, the spiral oil of second bearing 30 is flowed to from main shaft oilhole 21b
Slot (not shown), oil foglubrication second bearing 30.Remaining oil-containing gases, from shaft end, stomata 28a is discharged to motor epicoele
2b。
The oil-containing gases being discharged from main shaft oilhole 21a, in motor epicoele 2b, with the oily being discharged from shaft end stomata 28a
Body collaborates, and the spray oils in oil-containing gases become the big oil droplet of quality.Oil droplet is separated from oil-containing gases, via stator circumferential groove 7b
Oil storage tank 14 is fallen on base bearing circumferential groove 11a.Here, oil separation plectane 33 facilitates the separation of oil droplet in oil-containing gases.
It is included in the gas coolant of the lubricating oil 9 of motor epicoele 2b indissociable about 1% (circulating refrigerant amount ratio), from
Exhaust pipe 3 is discharged, and returns to air intake duct 4 after condenser 50, expansion valve 51, evaporator 52, fluid reservoir 53 respectively.By shell
For internal pressure as on high-tension side turbine, most of is all by having the sucking for returning the fluid reservoir 53 of oilhole to prevent liquid refrigerants.
But in the few small machines of refrigerant enclosed volume, fluid reservoir 53 can be omitted.
It is that the flowings of the oil-containing gases and lubricating oil of the high pressure in the refrigeration cycle to steady running is illustrated above.And
About 15 minutes or 90rps or more after being switched to compressor start run at high speed, in the unstable operating of the operating etc. that defrosts when,
The oil drain quantity of refrigeration cycle increases to 5~15% (circulating refrigerant amount ratios).Therefore, in previous design, it is contemplated that unstable
Operating, if 2 times or more required when initial stage enclosed lubricating oil steady running.
But implementation form 1, when refrigeration cycle whole oil drain quantities as oil-containing gases lubricating oil in use, even if
In unstable operating, lubrication there will not be any problem to above-mentioned modified fluoromaterial.For example, when unstable operating, oil storage tank
Even if 14 lubricating oil 9 is insufficient, also there is no problem.
Around this principle, implementation form 1 occurred at one day in the unstable operating more than for several times, can anti-sliding stop zero
The lack of lubrication of component.Moreover, can be greatly lowered lubricating oil to compressor enclosed volume.Stabilization is switched to from unstable operating
Before operating, the oil mass of oil storage tank 14 is restored, and the relevant lubricating oil of oil fuel tube 16 is injected into compression chamber 13, and there is no problem.
Then, the effect of oil foglubrication is illustrated.Previous droplet lubrication, the fuel feeding to lubrication components are dispersions
Oil droplet, for example, at the uniform velocity lubricate 10 μm of gaps below, be theoretically difficult.And implementation form 1, its main feature is that, pass through high pressure
Oil-containing gases oil foglubrication, can uniformly fast spraying lubrication almost all modified fluoromaterial sliding surface.
Therefore, the oil foglubrication of high pressure, big (such as Moving plate 18 1 of (10 μm or less) narrow to glade plane space, slide area
Sample) screw compressor it is advantageous.Its advantage is that the functional reliability of compressor is high, the gas in compression chamber is not easy to leak.
Implementation form 1 connects oil storage tank 14 and compression chamber 13, but replaces means, oiling as it by oil fuel tube 16
Pipe 16 can be also connected to oil storage tank 14 and air intake duct 4, or be connect with low pressure components such as oil storage tank 14 and fluid reservoirs 53.
Implementation form 2
Main shaft 21 and the sliding type of first bearing 12 and second bearing 30 are regarded sliding bearing by implementation form 1；Implement
The screw compressor 102 of form 2, design are that two rolling bearings 40 are used in first bearing 12, cancel second bearing 30.
In Fig. 3,12 internal diameter of first bearing fixes two cylinder rolling bearings 40 up and down.Change implementation form 1 uses
Through hole 23, additional two main shaft oilhole 21a being connected to the axle center hole 47 and 21 outer diameter of main shaft for not penetrating through axis 21.Drawing, letter
Sketch form shows cylinder rolling bearing 40.
Main shaft 21 and the internal diameter of two cylinder rolling bearings 40 be slidably matched, in the outer diameter and first bearing 12 of main shaft 21
Between internal diameter, generates the internal clearance (not indicating) of cylinder rolling bearing 40 and be equivalent to cylinder rolling bearing 40 internal-and external diameter difference
Bearing clearance 38.
The first oil-containing gases shunted being discharged from gas vent 18b, via base bearing space 10a, with implementation form 1 one
Sample carries out oil foglubrication.Second oil-containing gases shunted are rolled upper since two main shaft oilhole 21a by above-mentioned cylinder
Bearing inner gap and bearing clearance 38 are stated, is discharged to motor cavity of resorption 2a from the upper end of first bearing 12.During it, oily
Spray body lubricates two cylinder rolling bearings 40.Thereafter, via the gap of electrical-coil 7a etc., motor epicoele 2b is flowed out to, is contained
The less gas of oil mass is discharged from exhaust pipe 3, and oil storage tank 14 is fallen under the lubricating oil of oil droplet shape.
So, implementation form 2, the oil-containing gases being discharged from gas vent 18b, via the axle center for having no through main shaft 21
Hole 47, cylinder rolling bearing 40 of the sprayable lubrication configuration between 12 internal diameter of 21 outer diameter of main shaft and first bearing.
Implementation form 2, oil foglubrication can be applied not only to cylinder rolling bearing 40, can also be applied to the most of axis of rolling
It holds.Moreover, as shown in implementation form 1, screw compressor 102, in the design for having second bearing 30, first bearing 12 and
The one or both sides of two bearings 30 can configure rolling bearing 40.
Implementation form 3
The screw compressor 103 of implementation form 3 shown in Fig. 4 is that compression mechanical part 5 is configured to 6 upside of electric motor
Design, compared with implementation form 1, the up and down direction of crankshaft 20 is inverted, and price fixing 15 and oil storage tank 14 significantly divide in above-below direction
From.
The capillary 16a being connected with the oil fuel tube 16 between the compression chamber 13 (Fig. 2) for being connected to price fixing 15 passes through main shaft
Circumferential groove 11a is held to be connected with oil storage tank 14.The lower end of the through hole 23 of crankshaft 20, through hole bolt 23a are closed, it is ensured that through hole 23
Oil-containing gases will not be mixed into the lubricating oil 9 in oil storage tank 14.
The high pressure oil-containing gases being discharged from gas vent 18b, flow out to through hole 23, as implementation form 1, carry out first
It shunts, oil foglubrication eccentric shaft 22 and floating bearing 19, the sliding surface of Moving plate 18 etc..Meanwhile second is carried out in main shaft oilhole 21a
The oil-containing gases of shunting pass through the cunning of main shaft oil groove 21c oil foglubrication main shaft 21 and first bearing 12 as implementation form 1
Dynamic face, is discharged to motor epicoele 2b.Oil-containing gases are discharged, lubrication second from the main shaft oilhole 21b for being configured at 23 lower end of through hole
Bearing 30.
By the remaining oil-containing gases of through hole 23, electricity is discharged to from additional main shaft stomata 24 near 21 center of main shaft
Machine epicoele 2b.Thereafter, the less gas of oil content is discharged from exhaust pipe 3.And 14 quilt of oil storage tank is fallen under the lubricating oil of oil droplet shape
It recycles.
So, implementation form 3 pass through even if electric motor 6 is configured to upside, compression mechanical part 5 is configured to downside
Extend oil fuel tube 16, the Lubrication Design of the utility model is set up.
Implementation form 4
Crankshaft 20 and electric motor rotating shaft are set as horizontal direction by horizontal type scroll compressor 104 shown in fig. 5.But
It is that, in order to ensure the lubricating oil of oil storage tank 14 can be realized oil foglubrication, the side of oil storage tank 14 is downward, above-mentioned axis is tilted 3
~5 ° are also beneficial.Horizontal type scroll compressor is largely carried to commercial refrigeration refrigerating equipment, refrigeration refrigeration vapour
Vehicle, electric car (EV) air-conditioning on.
The high pressure oil-containing gases being discharged from gas vent 18b carry out first and shunt, oil foglubrication is inclined as implementation form 1
Mandrel 22 and floating bearing 19, the sliding surface of Moving plate 18 etc..Second oil-containing gases shunted, from being fixed on 23 shaft end of through hole
Thin footpath hole 29 flows out to shaft end chamber 45a.During flowing, oil-containing gases oil foglubrication main shaft 21, first bearing 12 and
The sliding part of two bearings 30.The form of flowing, the oil foglubrication of these oil-containing gases is identical as implementation form 1.
By the high pressure oil-containing gases flowed out from thin footpath hole 29, the pressure of shaft end chamber 45a also becomes highest.Therefore, shaft end
The oil-containing gases of chamber 45a are moved to intermediate cavity 45b by electrical-coil 7a and stator circumferential groove 7b etc..Therebetween, oil-containing gases
In lubricating oil be oil droplet shape, under fall on the bottom of intermediate cavity 45b.And the high pressure gas that oil content is less, pass through multiple main shafts
Circumferential groove 11b is held, shoe cream room 45c is flowed into, is finally discharged to refrigeration cycle from exhaust pipe 3.
By the movement of above-mentioned oil-containing gases, exhaust pipe 3 configure shoe cream room 45c pressure it is minimum, so under fall on axis
The most of lubricating oil for holding chamber 45a and intermediate cavity 45b is moved by the base bearing circumferential groove 11a configured in 10 bottommost of base bearing
Move shoe cream room 45c.Therefore, oil storage tank 14 can ensure required lubricating oil 9.
Aperture is connected in the oil fuel tube 16 of compression chamber 13 (Fig. 2), through capillary 16a with oil storage tank 14, with implementation form 1 one
Sample, under any operating condition, by the oil-containing gases of high pressure, the whole modified fluoromaterial of sprayable lubrication.Ensure horizontal
The functional reliability of screw compressor 104.
When accelerating when electric car (EV) is in, slowing down and tilt the operating conditions such as operating, screw compressor 104 can up and down
Inclination；And oil-containing gases, it is the high pressure higher than shell internal pressure, so not influencing the lubrication of modified fluoromaterial.Above-mentioned inclination, because
The internal pressure distribution for not influencing shell 2, so oil mass needed for often can ensure that oil storage tank 14.
Referring to Fig. 1-Fig. 5 detailed description according to the specific structure of the screw compressor of the utility model embodiment:
As Figure 1-Figure 5, electric motor 6 and compression mechanical part 5 have been stored in seal casinghousing 2, electric motor 6 is by stator
The composition such as 7 and rotor 8, compression mechanical part 5 are driven by electric motor 6, and lubricating oil 9 is for lubricating compression mechanical part 5, compression mechanism
Portion 5 has price fixing 15, Moving plate 18, the crankshaft 20 fixed with rotor 8, connects between Moving plate 18 and rotor 8, with the sliding of crankshaft 20
The first bearing 12 connect forms compression chamber 13 between price fixing 15 and Moving plate 18, the oil-containing gases being discharged from compression chamber 13 can be at least
Lubricate the sliding surface of crankshaft 20 and first bearing 12.
In vertical vortex 101 shown in Fig. 1, the rotating shaft of crankshaft 20 is disposed vertically, the center of price fixing 15
Place is provided with gas vent 18b, the through hole 23 being connected to gas vent 18b is formed with inside crankshaft 20, while on the wall of crankshaft 20
The the first main shaft oilhole 21a (such as main shaft oilhole 21a above) for penetrating through the wall is offered, is also set up on the outer peripheral surface of crankshaft 20
There is main shaft oil groove 21c corresponding with base bearing 10, wherein the first main shaft oilhole 21a connection through hole 23 and main shaft oil groove 21c,
To enable the oil-containing gases flowed in through hole 23 to flow into main shaft oil groove 21c from the first main shaft oilhole 21a, 20 He of crankshaft is realized
The lubrication of sliding surface between base bearing 10.
The screw compressor of the utility model embodiment further include: for supporting the second bearing 30 of crankshaft 20, the second axis
Hold 30 and first bearing 12 be located at the two sides of rotor 8, be also provided on the wall of crankshaft 20 penetrate through the wall the second main shaft oil
Hole 21a, the second main shaft oilhole 21a are towards the inner peripheral surface of second bearing 30, and the second main shaft oilhole 21a is by the lubrication in through hole 23
Oil 9 is guided to the inner peripheral surface of second bearing 30, to be lubricated to the sliding surface between second bearing 30 and crankshaft 20.
Further, crankshaft 20 can have eccentric shaft 22, and eccentric shaft oilhole 22a, eccentric shaft are provided on eccentric shaft 22
The radial inner end of oilhole 22a is connected to through hole 23, and the surface away from price fixing 15 of Moving plate 18 is provided with floating bearing 19, rotating shaft
19 sets are held on eccentric shaft 22, the inner peripheral surface of the radial outer end of eccentric shaft oilhole 22a towards floating bearing 19 opens wide, such as Fig. 1 and
Shown in Fig. 2, eccentric shaft oil groove 22b has been can be set in the outer peripheral surface of eccentric shaft 22, and eccentric shaft oil groove 22b is connected to eccentric shaft oilhole
The radial outer end of 22a, the oil-containing gases in through hole 23 can flow into eccentric shaft oil groove 22b from eccentric shaft oilhole 22a as a result, from
And the sliding surface between eccentric shaft 22 and floating bearing 19 is lubricated.
Further, eccentric shaft oil groove 22b can be along two end faces for axially extending to eccentric shaft 22 of crankshaft 20, this
Sample, the oil-containing gases into eccentric shaft oil groove 22b can be flowed out from eccentric shaft oil groove 22b, and then enter 10 space of base bearing
10a is lubricated base bearing 10.
Further, as shown in Fig. 2, slew bearing apertures 19a can be set on floating bearing 19, slew bearing apertures 19a
Penetrate through floating bearing 19 inner peripheral surface and outer peripheral surface, slew bearing apertures 19a crankshaft 20 radially with eccentric shaft oilhole 22a just
Right, the oil-containing gases in through hole 23 can flow into eccentric shaft oil groove 22b from eccentric shaft oilhole 22a a part as a result, to eccentric shaft
Sliding surface between 22 and floating bearing 19 is lubricated, and another part can be flowed out from slew bearing apertures 19a, into base bearing 10
Space 10a is lubricated base bearing 10.
Optionally, as shown in Figure 1, shaft end closure can be set in one end for being provided with second bearing 30 of crankshaft 20,
Shaft end blocks the shaft end stomata 28a for being provided with connection through hole 23, shaft end stomata 28a radially extending along crankshaft 20, shaft end
Oil separation plectane 33 is further fixedly arranged in closure, oil separation plectane 33 is rotated synchronously perpendicular to crankshaft 20 and with crankshaft 20, from
And it can preferably realize the separation of oil gas.
In screw compressor in as depicted in figs. 1 and 2, electric motor 6 is located at the top of compression mechanical part 5, scroll compression
Contracting machine further includes oil fuel tube 16, the upper end connection compression chamber 13 of oil fuel tube 16 and the oil storage tank of 5 lower section of lower end and compression mechanical part
Connection, to be transported to lubricating oil 9 in compression chamber 13 from oil storage tank by oil fuel tube 16.
In another embodiment of the utility model, as shown in figure 4, electric motor 6 is located at the lower section of compression mechanical part 5,
Screw compressor further includes oil fuel tube 16, and the upper end of oil fuel tube 16 is connected to the compression chamber 13 of compression mechanical part 5, oil fuel tube 16
The main part of oil storage tank in lower end communication seals shell 2, oil fuel tube 16 passes through compression mechanical part 5 and electric motor 6, equally
Conveying of the lubricating oil 9 in oil storage tank into compression chamber 13 can be achieved.
In another embodiment of the utility model, as shown in figure 3, gas vent 18b is provided at the center of price fixing 15, it is bent
The axle center hole 47 being connected to gas vent 18b is formed with inside axis 20, the lower end of axle center hole 47 is connected to gas vent 18b and upper end seal
It closes, crankshaft 20 has eccentric shaft 22, and eccentric shaft oilhole 22a is provided on eccentric shaft 22, and the radial inner end of eccentric shaft oilhole 22a connects
Logical axle center hole 47, the surface away from price fixing 15 of Moving plate 18 are provided with floating bearing 19,19 sets of floating bearing on eccentric shaft 22,
The inner peripheral surface of the radial outer end of eccentric shaft oilhole 22a towards floating bearing 19 opens wide, and the outer peripheral surface of eccentric shaft 22 is provided with bias
The radial outer end of shafting oil slot 22b, eccentric shaft oil groove 22b connection eccentric shaft oilhole 22a, thus can realize crankshaft 20 and base bearing
10, the lubrication of 19 sliding surfaces of floating bearing, structure is simple, lubricating uniform, quickly.
Meanwhile the first main shaft oilhole 21a for penetrating through the wall is offered on the wall of crankshaft 20, first bearing 12 and crankshaft 20 it
Between be provided with rolling bearing 40, rolling bearing 40 is multiple and along crankshaft 20 axially spaced arrangements, the first main shaft oilhole 21a
It is corresponding with one of rolling bearing 40, thus, the oil-containing gases flowed in through hole 23 can be flowed by the first main shaft oilhole 21a
To at rolling bearing 40, the lubrication to rolling bearing 40 is realized.
In conclusion according to the screw compressor of the utility model embodiment, because being the oil-containing being discharged from compression chamber 13
Air pressure highest in gas, thus it is not related with the inclination of height and compressor with modified fluoromaterial, using spraying
Lubrication can be impregnated with 5 μm of small glade plane spaces below, ensure that uniformly, rapidly lubrication arrives modified fluoromaterial.
It is injected into the mode of compression chamber 13 by using oil, under whole operating conditions, especially 9 consumption of lubricating oil
In biggish unstable operating, the oil concentration of oil-containing gases can also be sufficiently maintained.
The oil foglubrication that the oil-containing gases of high pressure generate is difficult to influence the operating condition of compressor, so being applied to carrying
The fields such as refrigeration vehicle, refrigerator car or the electric car (EV) of horizontal compressor, can be advantageous, and the structure letter of the screw compressor
Single, manufacture is easy.
The utility model additionally provides a kind of refrigerating circulatory device, which includes above-mentioned scroll compression
Machine further includes condenser 50, expansion device and evaporator 52, so that there is modified fluoromaterial to lubricate abundant, compressor operating can
By the advantages that.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (16)
1. a kind of screw compressor, which is characterized in that stored in seal casinghousing the electric motor being made of stator and rotor etc.,
The lubricating oil of the compression mechanical part, the lubrication compression mechanical part that are driven by the electric motor, the compression mechanical part have
Price fixing and Moving plate, fixed crankshaft, is slidably connected between the Moving plate and the rotor, with the crankshaft with the rotor
First bearing, the oil-containing gases being discharged from the compression chamber being made up of the price fixing and the Moving plate at least lubricate the song
The sliding surface of axis and the first bearing.
2. screw compressor according to claim 1, which is characterized in that the oil-containing gases via the crankshaft axis
In, at least lubricate the first bearing.
3. screw compressor according to claim 1, which is characterized in that across the rotor, with the first bearing
Second bearing is configured on opposite position, the oil-containing gases at least lubricate the crankshaft, the first bearing and described second
The sliding surface of bearing.
4. screw compressor according to claim 1, which is characterized in that have the connection compression chamber or be connected to described
One of any and lubricating oil of the low tension loop of compression chamber, and oiling is to the pipeline of the compression chamber.
5. screw compressor according to claim 3, which is characterized in that the outer diameter of the crankshaft and the first bearing and
Between the internal diameter of at least one of the second bearing, has rolling bearing.
6. screw compressor according to claim 1, which is characterized in that the rotating shaft of the crankshaft is horizontal or vertical to be put
It sets.
7. screw compressor according to claim 1, which is characterized in that it is provided with gas vent at the center of the price fixing,
It is formed with the through hole being connected to the gas vent inside the crankshaft, is offered on the wall of the crankshaft and penetrates through the first of the wall
Main shaft oilhole is additionally provided with main shaft oil groove corresponding with base bearing on the outer peripheral surface of the crankshaft, wherein first main shaft oil
Hole is connected to the through hole and the main shaft oil groove.
8. screw compressor according to claim 7, which is characterized in that further include: for supporting the second of the crankshaft
Bearing, the second bearing and the first bearing are located at the two sides of the rotor, are also provided on the wall of the crankshaft
Penetrate through the second main shaft oilhole of the wall, inner peripheral surface of the second main shaft oilhole towards the second bearing, second main shaft
Oilhole guides the lubricating oil in the through hole to the inner peripheral surface of the second bearing.
9. screw compressor according to claim 1, which is characterized in that it is provided with gas vent at the center of the price fixing,
The through hole being connected to the gas vent is formed with inside the crankshaft, the crankshaft has eccentric shaft, sets on the eccentric shaft
It is equipped with eccentric shaft oilhole, the radial inner end of the eccentric shaft oilhole is connected to the through hole；
The surface away from the price fixing of the Moving plate is provided with floating bearing, the rotating shaft bearing sleeve on the eccentric shaft,
The inner peripheral surface of the radial outer end of the eccentric shaft oilhole towards the floating bearing opens wide, and the outer peripheral surface of the eccentric shaft is provided with
Eccentric shaft oil groove, the eccentric shaft oil groove are connected to the radial outer end of the eccentric shaft oilhole.
10. screw compressor according to claim 9, which is characterized in that axis of the eccentric shaft oil groove along the crankshaft
To two end faces for extending to the eccentric shaft.
11. screw compressor according to claim 9, which is characterized in that be provided with floating bearing on the floating bearing
Oilhole, the floating bearing oilhole penetrate through the inner peripheral surface and outer peripheral surface of the floating bearing, and the floating bearing oilhole is described
Crankshaft radially with the eccentric shaft oilhole face.
12. screw compressor according to claim 8, which is characterized in that the crankshaft is provided with the second bearing
One end in be provided with shaft end closure, the shaft end blocks and is provided with the shaft end stomata for being connected to the through hole, the shaft end
Oil separation plectane is further fixedly arranged in closure, the oil separation plectane turns perpendicular to the crankshaft and with the crankshaft-synchronous
It is dynamic, shaft end stomata the radially extending along the crankshaft.
13. screw compressor according to claim 1, which is characterized in that the electric motor is located at the compression mechanism
The top in portion, the screw compressor further include oil fuel tube, and the upper end of the oil fuel tube is connected to the compression chamber and lower end and institute
State the oil storage tank connection below compression mechanical part；
Or the electric motor is located at the lower section of the compression mechanical part, the screw compressor further includes oil fuel tube, described
The upper end of oil fuel tube is connected to the compression chamber of the compression mechanical part, and it is intracorporal that the lower end of the oil fuel tube is connected to the capsul
The main part of oil storage tank, the oil fuel tube passes through the compression mechanical part and the electric motor.
14. screw compressor according to claim 1, which is characterized in that it is provided with gas vent at the center of the price fixing,
Be formed with the axle center hole being connected to the gas vent inside the crankshaft, the lower end of the axle center hole be connected to the gas vent and
Upper end closed, the crankshaft have eccentric shaft, are provided with eccentric shaft oilhole, the radial direction of the eccentric shaft oilhole on the eccentric shaft
Inner end is connected to the axle center hole；
The surface away from the price fixing of the Moving plate is provided with floating bearing, the rotating shaft bearing sleeve on the eccentric shaft,
The inner peripheral surface of the radial outer end of the eccentric shaft oilhole towards the floating bearing opens wide, and the outer peripheral surface of the eccentric shaft is provided with
Eccentric shaft oil groove, the eccentric shaft oil groove are connected to the radial outer end of the eccentric shaft oilhole.
15. screw compressor according to claim 14, which is characterized in that offered on the wall of the crankshaft and penetrate through the wall
The first main shaft oilhole, be provided with rolling bearing between the first bearing and the crankshaft, the rolling bearing be it is multiple and
Along the axially spaced arrangement of the crankshaft, the first main shaft oilhole is corresponding with rolling bearing described in one of them.
16. a kind of refrigerating circulatory device further includes including screw compressor described according to claim 1 any one of -15
Condenser, expansion device and evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820831882.XU CN208348059U (en) | 2018-05-30 | 2018-05-30 | Screw compressor and refrigerating circulatory device with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820831882.XU CN208348059U (en) | 2018-05-30 | 2018-05-30 | Screw compressor and refrigerating circulatory device with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208348059U true CN208348059U (en) | 2019-01-08 |
Family
ID=64891411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820831882.XU Withdrawn - After Issue CN208348059U (en) | 2018-05-30 | 2018-05-30 | Screw compressor and refrigerating circulatory device with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208348059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457857A (en) * | 2018-05-30 | 2018-08-28 | 广东美芝制冷设备有限公司 | Screw compressor and refrigerating circulatory device with it |
| CN114183325A (en) * | 2021-12-03 | 2022-03-15 | 珠海格力电器股份有限公司 | Compressor crankshaft reaches inverter compressor including it |
-
2018
- 2018-05-30 CN CN201820831882.XU patent/CN208348059U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457857A (en) * | 2018-05-30 | 2018-08-28 | 广东美芝制冷设备有限公司 | Screw compressor and refrigerating circulatory device with it |
| CN108457857B (en) * | 2018-05-30 | 2024-01-05 | 广东美芝制冷设备有限公司 | Scroll compressor and refrigeration cycle device with same |
| CN114183325A (en) * | 2021-12-03 | 2022-03-15 | 珠海格力电器股份有限公司 | Compressor crankshaft reaches inverter compressor including it |
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