CN207349066U - scroll compressor, throttling structure and air conditioner - Google Patents
scroll compressor, throttling structure and air conditioner Download PDFInfo
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- CN207349066U CN207349066U CN201721127269.1U CN201721127269U CN207349066U CN 207349066 U CN207349066 U CN 207349066U CN 201721127269 U CN201721127269 U CN 201721127269U CN 207349066 U CN207349066 U CN 207349066U
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- 230000000694 effects Effects 0.000 abstract description 15
- 239000003921 oil Substances 0.000 description 132
- 239000010687 lubricating oil Substances 0.000 description 34
- 239000007789 gas Substances 0.000 description 23
- 238000005461 lubrication Methods 0.000 description 23
- 239000000314 lubricant Substances 0.000 description 13
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- Applications Or Details Of Rotary Compressors (AREA)
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Abstract
The utility model provides a scroll compressor, throttle structure and air conditioner, wherein scroll compressor includes: the shell comprises a shell and a machine head cover, wherein a first air suction port is arranged on the shell, and a first air exhaust port and an air exhaust oil return cavity communicated with the first air exhaust port are arranged on the machine head cover; the fixed scroll and the movable scroll are arranged in the shell, and the fixed scroll is provided with a second air suction port communicated with the first air suction port and a second air exhaust port communicated with the first air exhaust port; the motor and the rotating shaft are arranged in the shell, the motor drives the rotating shaft to rotate and drives the movable scroll to rotate, a first bearing is arranged in a first bearing cavity of the bracket, and a second bearing is arranged in a second bearing cavity of the shell; the scroll compressor further includes a flow passage communicating the discharge air return chamber and the second bearing chamber. The technical scheme of the utility model the lubricated poor problem of effect of the chassis bottom bearing of compressor among the prior art has been solved effectively.
Description
Technical field
Field of air conditioning is the utility model is related to, in particular to a kind of screw compressor, throttle structure and air conditioner.
Background technology
With new energy development trend, Horizontal electronic screw compressor continues to bring out in market.Air conditioning for automobiles electric scroll pressure
Contracting machine is common to use fog lubrication mode, and lubricant effect is poor.Occur in being run using the electric scroll compressor of fog lubrication
Following problem：
General electric scroll compressor (i.e. air-breathing low-pressure area) can store certain lubricating oil in the cavity for accommodating motor,
The lubrication of compressor carries in profit oil or refrigerant circulation by reserve by refrigerant in operation breathing process and carries oil gas to pump
The lubrication of body and friction pair, lubrication and oil film seal effect are poor.In this regard, patent CN100344879C is on Moving plate, quiet disk, stent
Open up respectively and draw oil passage structure, back pressure cavity and exhaust high pressure oil area are interconnected, compliant scroll disk fortune circles, sound whirlpool
Capstan and stent draw oily channel conductive once, and high pressure oil intermittently is guided to back pressure cavity lubrication bearing and Pressure in Back-pressure Cavity is carried out
Adjust.Another patent CN102308093A it is also proposed another channel design on Moving plate, quiet disk, stent makes discharge chambe and the back of the body
Pressure chamber connect, to back pressure chamber supply or a small amount of fuel feeding, with adjust back pressure chamber pressure and improve orbiter operating in lubrication and
Sealing performance.And patent CN102116298A thinks that the oily passage that draws that CN100344879C is proposed imitates orbiter bearing lubrication
Fruit is still poor, proposes to improve oily access structure on orbiter, fixed scroll.
Above-mentioned patent utilizes pressure difference, high pressure oil is guided to back pressure cavity, the bearing on lubricated cradle and Moving plate.But for casing
The bearing of bottom, only relies on the fog lubrication carried in air-breathing refrigerant, especially when running at high speed, the lubrication of bottom of shell bearing
It is worse.Bottom of shell bearing there are lubricant effect it is poor the problem of.
In addition, during compressor operation, contain refrigeration oil in the cold media gas through pump body compression discharge, by being vented oil
During from device, the refrigeration oil in refrigerant accumulates in high pressure gas channel bottom after being separated by oil eliminator, if separated refrigeration oil is not
Can in time back in the reserve in compressor, high pressure gas channel bottom it is oily cumulative.Excessive refrigeration oil product is full
On exhaust passage, compressor can be still taken away by refrigerant and is entered in refrigeration system, oil eliminator separating effect drops significantly at this time
It is low, or even the problem of the separated effect of oil can be lost, cause compressor oil drainage rate big, also make cooling system degradation.Experiment
Verify, can be big in the accumulation of discharge chamber bottom when the high pressure refrigeration oil oil return being separated in compressor on exhaust passage is not smooth
Amount, and compressor oil drainage rate also increases.The compressor of certain oil mass is irrigated, when the high pressure oil separated on exhaust passage cannot
In time return compression in reserve and oil extraction rate oil it is big when, longtime running can cause compressor oil starvation, influence the reliable of compressor
Property.
Utility model content
The utility model aims to provide a kind of screw compressor, throttle structure and air conditioner, to solve to press in the prior art
The problem of lubricant effect of the bottom of shell bearing of contracting machine is poor.
To achieve these goals, one side according to the present utility model, there is provided a kind of screw compressor, including：
Housing, housing include casing and the nose cover that is connected with casing, the first air entry are provided with casing, and the is provided with nose cover
One exhaust outlet and the exhaust oil back chamber connected with first row gas port；Fixed scroll and orbiter, are arranged in casing, quiet vortex
The second air entry connected with the first air entry and the second exhaust port connected with first row gas port are provided with disk；Stent,
It is arranged on side of the orbiter towards the first air entry；Motor and shaft, are arranged in casing, and motor-driven rotatable shaft rotates,
The first end of shaft penetrates stent and drives orbiter to rotate, and clutch shaft bearing is provided between the first end and stent of shaft,
Clutch shaft bearing is contained in the clutch shaft bearing chamber of stent, and second bearing, the second axis are provided between the second end and casing of shaft
Hold in the second bearing chamber for being contained in casing；Wherein, screw compressor further includes connection exhaust oil back chamber and second bearing chamber
Logical circulation road is crossed, crosses the first drainage channel that logical circulation road includes being arranged in nose cover, the second drainage being arranged on fixed scroll
Passage, the 3rd drainage channel of the second drainage channel of connection and clutch shaft bearing chamber and the 4th drainage that is arranged in shaft are logical
Road, the 4th drainage channel connection clutch shaft bearing chamber and second bearing chamber.
Further, the first communicating passage is provided with stent, the 3rd drainage channel passes through the first communicating passage and first
Bearing bore is connected.
Further, the 3rd drainage channel is formed in stent.
Further, the 3rd drainage channel of part is formed in stent, and remainder is formed in drainage tube.
Further, be provided with 3rd bearing chamber on orbiter, screw compressor further include connection 3rd bearing chamber and
Cross the 5th drainage channel of logical circulation road.
Further, a part of 5th drainage channel sets in the bracket and is connected with crossing logical circulation road, a part the 5th
Drainage channel is arranged in orbiter.
Further, the 5th drainage channel is arranged in orbiter and is connected with crossing logical circulation road.
Further, the 5th drainage channel sets in the bracket and is connected with crossing logical circulation road.
Further, first seal is provided between stent and orbiter, the second company is provided with first seal
Circulation passage, crosses logical circulation road and is connected by the second communicating passage with the 5th drainage channel.
Further, throttle part is provided with the first drainage channel and/or the 5th drainage channel, to reduce the first drainage
The flow velocity of lubricating oil in passage and/or the 5th drainage channel.
Another aspect according to the present utility model, there is provided a kind of throttle structure, including：Head, thread segment and setting
Linkage section between head and thread segment, the outside diameter of thread segment are less than the radial dimension on head；Oilhole, is arranged on head and company
Connect in section, the first end of oilhole is extended on the end face on head, and the second end of oilhole is extended in the peripheral surface of linkage section.
Further, oilhole includes along the radial direction oil hole radially extended of linkage section and axially axially extending along head
Oilhole, radial direction oil hole are connected with axial oilhole.
Further, head is cylinder.
Another aspect according to the present utility model, there is provided a kind of screw compressor, including：Housing, housing include casing
And the nose cover being connected with casing, the first air entry is provided with casing, first row gas port is provided with nose cover and with first
The exhaust oil back chamber of exhaust outlet connection；Fixed scroll and orbiter, are arranged in casing, are provided with fixed scroll and first
Second air entry of air entry connection and the second exhaust port connected with first row gas port；Stent, is arranged on orbiter court
To the side of the first air entry；Motor and shaft, are arranged in casing, and motor-driven rotatable shaft rotates, and the first end of shaft penetrates
Stent simultaneously drives orbiter to rotate, and clutch shaft bearing is provided between the first end and stent of shaft, and clutch shaft bearing is contained in branch
In the clutch shaft bearing chamber of frame, second bearing is provided between the second end and casing of shaft, second bearing is contained in the of casing
In two bearing bores；Wherein, screw compressor further includes the mistake logical circulation road of connection exhaust oil back chamber and second bearing chamber, crosses logical circulation road
Including the first drainage channel being arranged in nose cover, the second drainage channel being arranged on fixed scroll, the drainage of connection second
3rd drainage channel of passage and clutch shaft bearing chamber and the 4th drainage channel being arranged in shaft, the connection of the 4th drainage channel
Throttle structure is provided with clutch shaft bearing chamber and second bearing chamber, the first drainage channel and/or the 3rd drainage channel, throttle structure
For above-mentioned throttle structure.
Another aspect according to the present utility model, there is provided a kind of air conditioner, including compressor, compressor are above-mentioned whirlpool
Revolve compressor.
Further, air conditioner is on-board air conditioner.
Using the technical solution of the utility model, lubricating oil in housing is being compressed with the refrigerant for entering screw compressor
Flow, finally converged in exhaust oil back chamber in machine.Passed through between the exhaust oil back chamber and second bearing chamber of screw compressor
Logical circulation road connects, and the lubricating oil in exhaust oil back chamber is back in second bearing chamber, is effectively guaranteed second bearing
Lubricants capacity in chamber, and then ensure that the lubricant effect of second bearing, solve the problems, such as second bearing insufficient lubrication.Meanwhile
The first drainage channel, the second drainage channel and the 3rd drainage that flow channels include connection exhaust oil back chamber and clutch shaft bearing chamber are logical
Road and the 4th drainage channel of connection clutch shaft bearing chamber and second bearing chamber.Flow channels are made effectively to be vented in oil back chamber
Lubricating oil be directed in second bearing and clutch shaft bearing, can to avoid in grease exhaust oil back chamber cause motor and its
Lubrication shortage of oil between his structure, solves the problems, such as that the oil circulation oil return of compressor internal lubrication is difficult, it is long-term to improve compressor
Reliability of operation.
Brief description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
New schematic description and description is used to explain the utility model, does not form the improper restriction to the utility model.
In the accompanying drawings：
Fig. 1 shows the schematic cross-sectional view of the embodiment one of screw compressor according to the present utility model；
Fig. 2 shows the first angle structure diagram of the stent of the screw compressor of Fig. 1；
Fig. 3 shows the second angle structure diagram of the stent of Fig. 2；
Fig. 4 shows the decomposition texture schematic diagram of the stent of the screw compressor of Fig. 1, first seal and orbiter；
Fig. 5 shows the schematic cross-sectional view of the embodiment two of screw compressor according to the present utility model；
Fig. 6 shows the decomposition texture schematic diagram of the stent of the screw compressor of Fig. 5, first seal and orbiter；
Fig. 7 shows the first structure diagram of the seal of Fig. 6；
Fig. 8 shows second of structure diagram of the seal of Fig. 6；
Fig. 9 shows the schematic cross-sectional view of the embodiment three of screw compressor according to the present utility model；
Figure 10 shows the schematic cross-sectional view of the example IV of screw compressor according to the present utility model；
Figure 11 shows the structure diagram of the embodiment of throttle structure according to the present utility model；And
Figure 12 shows the schematic cross-sectional view of the throttle structure of Figure 11.
Wherein, above-mentioned attached drawing is marked including the following drawings：
1st, casing；2nd, nose cover；201st, exhaust passage；202nd, the first drainage channel；203rd, first row gas port；3rd, oil gas point
From device；4th, throttle part；401st, axial oilhole；402nd, radial direction oil hole；403rd, thread segment；404th, tooth bottom；405th, crest portion；
406th, head；407th, linkage section；5a, second seal；5b, the 3rd seal；5c, the 4th seal；5d, the 5th seal；
6th, fixed scroll；601st, the second drainage channel；602nd, second exhaust port；7th, orbiter；701st, axial oilhole；702nd, it is radially oily
Hole；703rd, axial oilhole；704th, middle pressure hole；8th, first seal；801st, through hole；802nd, through hole；803rd, oil groove；9th, stent；
901st, axial oilhole；902nd, radial direction oil hole；903rd, axial oilhole；904th, the 3rd drainage channel；905th, axial oil duct；906th, radially
Oil duct；907th, radial direction oil hole；10th, clutch shaft bearing；10a, inner shield ring；11st, cover board；11a, through hole；11b, through hole；12nd, shaft；
12a, radial direction oil hole；12b, axial oilhole；12c, radial direction oil hole；13rd, second bearing；14th, motor；15th, eccentric block；16th, axis pin；
17th, drainage tube；A, it is vented oil back chamber；B, low-pressure oil storage area；Ps, air-breathing low-pressure area；Pm, Zhong Ya back pressure area；Pd, exhaust high pressure
Area.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, the technical solution in the embodiment of the present application is carried out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the application and its application or makes
Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, shall fall in the protection scope of this application.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the component and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited scope of the present application processed of formula and numerical value.At the same time, it should be appreciated that for the ease of description, each portion shown in attached drawing
The size divided not is to be drawn according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely exemplary, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms is represented in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It need not be further discussed in figure.
Embodiment one：
As shown in Figure 1, the screw compressor of embodiment one includes housing, fixed scroll 6, orbiter 7, stent 9, motor
14 and shaft 12.Wherein, housing includes casing 1 and the nose cover 2 being connected with casing 1, and the first air entry is provided with casing 1,
The exhaust oil back chamber A that first row gas port 203 is provided with nose cover 2 and is connected with first row gas port 203.Fixed scroll 6 and dynamic
Scroll plate 7 is arranged in casing 1, the second air entry for being connected with the first air entry is provided with fixed scroll 6 and with first
The second exhaust port 602 of exhaust outlet connection.Stent 9 is arranged on orbiter 7 towards the side of the first air entry.Motor 14 and turn
Axis 12 is also disposed in casing 1, and 14 drive shaft 12 of motor rotates, and the first end of shaft 12 penetrates stent 9 and drives dynamic vortex
Disk 7 rotates.Clutch shaft bearing 10 is provided between the first end and stent 9 of shaft 12, clutch shaft bearing 10 is contained in the first of stent 9
In bearing bore, second bearing 13 is provided between the second end and casing 1 of shaft 12, second bearing 13 is contained in the of casing 1
In two bearing bores.Screw compressor further includes the mistake logical circulation road of connection exhaust oil back chamber A and second bearing chamber, and crossing logical circulation road includes
The first drainage channel 202 for being arranged in nose cover 2, the second drainage channel 601 being arranged on fixed scroll 6, connection second
3rd drainage channel 904 of drainage channel 601 and clutch shaft bearing chamber and the 4th drainage channel being arranged in shaft 12, the 4th
Drainage channel connects clutch shaft bearing chamber and second bearing chamber.
Using the technical solution of the present embodiment, lubricating oil in housing is with entering the refrigerant of screw compressor in compressor
Middle flowing, finally converges in exhaust oil back chamber A.Passed through between the exhaust oil back chamber A and second bearing chamber of screw compressor
Logical circulation road connects, and the lubricating oil in exhaust oil back chamber A is back in second bearing chamber, is effectively guaranteed second bearing
Lubricants capacity in chamber, and then ensure that the lubricant effect of second bearing 13, solve the problems, such as 13 insufficient lubrication of second bearing.Together
When, flow channels include the first drainage channel 202,601 and of the second drainage channel of connection exhaust oil back chamber A and clutch shaft bearing chamber
3rd drainage channel 904 and the 4th drainage channel of connection clutch shaft bearing chamber and second bearing chamber.Make flow channels effectively
The lubricating oil being vented in oil back chamber A is directed in second bearing 13 and clutch shaft bearing 10, can arranged to avoid in grease
Gas oil back chamber A causes the lubrication shortage of oil between motor 14 and other structures, solves the oil circulation oil return of compressor internal lubrication and is stranded
The problem of difficult, improve the reliability of compressor longtime running.
Specifically, as shown in Figure 1, being provided with clutch shaft bearing chamber on the stent 9 of the present embodiment, the outer baffle ring of clutch shaft bearing 10
It is interference fitted in clutch shaft bearing chamber, the inner shield ring 10a of clutch shaft bearing 10 is interference fitted in shaft 12, to flow into lubricating oil
Clutch shaft bearing 10, is provided with the first communicating passage on the stent 9 of the present embodiment.As depicted in figs. 1 and 2, the first of the present embodiment
The radial direction that communicating passage includes the axial oil duct 905 axially set along the stent 9 and the radial direction along the stent 9 is set
Oil duct 906.Wherein, axial oil duct 905 is arranged on the bearing hole side wall of stent 9, and radial direction oil 906 is arranged on the axis of stent 9
Bearing bore bottom, radial direction oil 906 are at least extended between the inner shield ring 10a of clutch shaft bearing 10 and outer baffle ring.First drainage channel
It is connected by the first communicating passage with clutch shaft bearing chamber, under the action of pressure difference, the lubricating oil in exhaust oil back chamber A passes through above-mentioned
First communicating passage flows into clutch shaft bearing 10, and flows to second bearing chamber by clutch shaft bearing chamber.
Specifically, as shown in Figure 1 and Figure 4, the 3rd drainage channel 904 of the present embodiment is formed in stent 9 and tilts and sets
Put, to connect the port of the second drainage channel 601 and clutch shaft bearing chamber.
Further, as shown in Figure 1, being additionally provided with cover board 11 on the stent 9 of the present embodiment, cover board 11, shaft 12 and
Stent 9 forms the clutch shaft bearing chamber for accommodating clutch shaft bearing 10.Through hole 11a is provided with cover board 11, makes clutch shaft bearing chamber and casing 1
The air-breathing low-pressure area Ps of interior motor accommodating chamber is connected, and clutch shaft bearing chamber is in low-pressure state.
The 4th drainage channel set in shaft 12 includes radial direction oil hole 12a, radial direction oil hole 12c and the axial oil being connected
Hole 12b, the lubricating oil of clutch shaft bearing intracavitary can through the radial direction oil hole 12a in shaft 12, axial direction oilhole 12b and radial direction oil hole 12c,
Reach and second bearing 13 is lubricated in the second bearing chamber of 1 bottom of casing, be then refluxed in the low-pressure oil storage area B in casing 1.
Further, as shown in Figure 1, being provided with 3rd bearing chamber on the orbiter 7 of the present embodiment, screw compressor is also
Including connection 3rd bearing chamber and the 5th drainage channel for crossing logical circulation road, said structure enables the lubricating oil in exhaust oil back chamber A
Lubricating action is enough played to the 3rd bearing on orbiter 7 by the 5th drainage channel.
Specifically, the first end of the shaft 12 of the present embodiment is also equipped with axis pin 16, and axis pin is inserted into the pin hole of eccentric block 15,
In the 3rd bearing of the cylindrical shaft end insertion orbiter 7 of eccentric block 15.Axis pin 16 forms bent axle, electricity with 12 eccentric setting of shaft
Machine 14 drives eccentric block 15 to rotate by shaft 12 and axis pin 16, in axis pin 16, eccentric block 15,3rd bearing and anti-self-revolving machine
Orbiter 7 is realized under the action of structure revolves round the sun around axis.The scroll wrap portion of fixed scroll 6 and the scroll wrap portion of orbiter 7 at this time
Intermeshing, the orbiting and fixed scroll are internally formed the different crescent compression chamber of pressure, under 14 Continuous Drive of motor, fixed scroll
The second air entry on 6 constantly accommodates to suck in the air-breathing low-pressure area Ps of motor 14 out of casing 1 carries certain lubricating oil
Low pressure refrigerant gas, becomes the gas of high temperature and pressure after the orbiting and fixed scroll compresses, finally from the second exhaust of fixed scroll 6
Mouth 602 is discharged in the closed cavity between 6 back side of fixed scroll and nose cover 2, forms exhaust higher-pressure region Pd.
The cold media gas in the Pd of higher-pressure region is vented through the first row gas port 203 on nose cover 2, enters on nose cover 2 and opens
If exhaust passage 201 in, gs-oil separator 3 is provided with exhaust passage 201, through the refrigerant that ejects of the orbiting and fixed scroll compression
Contain lubricating oil in gas, after gs-oil separator 3, most of lubricating oil is separated in refrigerant, and fraction is by refrigerant band
From compressor, into cooling cycle system.By the grease accumulation that gs-oil separator 3 is separated at 201 bottom of exhaust passage
In the exhaust oil back chamber A in portion, and can be cumulative.If exhaust oil back chamber A is not provided with oily circulating reflux passage, oil cannot and
When be back in the low-pressure oil storage area B in casing 1, still compressor can be left by cold media gas band, compressor oil drainage rate can be caused
Big problem.Five drainage channels in the present embodiment lead back the lubricating oil being vented in oil back chamber A in three bearing bores, make lubrication
Oil forms circulation in compression case body, that is, ensures the lubricant effect of three bearings, it also avoid lubricating oil in exhaust oil back chamber A
The problem of excessively and leaving compressor with cold media gas, cause lubricant in compressor to reduce.
Specifically, as shown in Figures 1 to 4, the 5th drainage channel of a part of the present embodiment be arranged in stent 9 and with mistake
Logical circulation road is connected, and a part of 5th drainage channel is arranged in orbiter 7.Since technique limits, the 5th of the present embodiment the
Part of the drainage channel in stent 9 includes prolonging along the radial direction oil hole 902 radially extended of stent 9 and along the axial direction of stent 9
The axial oilhole 901 and axial oilhole 903 stretched, wherein axial oilhole 901 connects the second drainage channel 601 on fixed scroll 6
With radial direction oil hole 902, radial direction oil hole 902 connects the 3rd drainage channel 904 on axial oilhole 901 and stent 9, axial oilhole
903 lead to part of the 5th drainage channel in orbiter 7.Part of 5th drainage channel in orbiter 7 includes edge
The axially extending axial oilhole 701 of orbiter 7 and axial oilhole 703 and the radial direction radially extended along orbiter 7
Oilhole 702.Axial oilhole 701 connects axial oilhole 903 and radial direction oil hole 702, and axial oilhole 703 connects 3rd bearing chamber and footpath
To oilhole 702 and it is directed toward between the inner shield ring of 3rd bearing and outer baffle ring, to improve lubricant effect.
As motor 14 rotates, 7 public affairs of orbiter circle, and the 5th drainage channel of holder part can be with orbiter
Partial the 5th drainage channel connection is once.This intermittence draws oily mode can provide suitable oil mass to 3rd bearing chamber, full
Each friction lubricating of foot needs, also not because it is continuous draw oil and caused by 3rd bearing chamber long-pending oil it is excessive the problem of.
Further, as shown in Figure 1 and Figure 4, first seal 8 is provided between stent 9 and orbiter 7, first is close
The second communicating passage is provided with sealing 8, logical circulation road is crossed and is connected by the second communicating passage with the 5th drainage channel.Specifically,
As shown in Figures 1 to 4, second communicating passage of the present embodiment includes the logical of the second drainage channel 601 of connection and axial oilhole 901
Hole 801 and the through hole 802 of the axial oilhole 903 of connection and axial oilhole 701.
Further, as shown in Figure 1, being provided with first drainage channel 202 of the present embodiment and the 3rd drainage channel 904
Throttle part 4, tiny detour is may make up between 4 and first drainage channel 202 of throttle part and the side wall of the 3rd drainage channel 904
Throttling passage, to reduce the flow velocity of lubricating oil in the first drainage channel 202 and the 3rd drainage channel 904, avoided logical circulation road
Middle lubrication oil flow rate is too fast to cause the oil level rapid decrease of exhaust oil back chamber A, and then causes the gases at high pressure of exhaust passage 201 to lead to
Cross logical circulation road and enter Zhong Ya back pressures area Pm and air-breathing low-pressure area Ps, and cause different cavity gas blowby body problems.Wherein, the middle pressure back of the body
Pressure area Pm refers to that 9 top of stent accommodates the formation cavity between the cavity of eccentric block 15 and the back side of orbiter 7.
As shown in Figure 1 and Figure 4, middle pressure hole 704 is additionally provided with the orbiter 7 of the present embodiment, is moved in orbiter 7
During, the intermediate pressure (pressure of the pressure between pressure of inspiration(Pi) and pressure at expulsion) in the orbiting and fixed scroll compression chamber is intermittently
Zhong Ya back pressures area Pm is guided to by middle pressure hole 704, is close to the vortex increment of fixed scroll 6 to realize that orbiter 7 floats upwards
Face, first seal 8 wear-resisting at this time make end face and dynamic vortex of the first seal 8 all the time with stent 9 using the elasticity of itself
The back side fitting of disk 7, keeps contact leakproofness.
Alternatively, throttle part 4 can be selectively disposed in five drainage channels according to the diameter of drainage channel
In.
Under the difference force effect in high-low pressure area, the lubricating oil of exhaust oil back chamber A passes through above-mentioned first drainage channel
202nd, after the second drainage channel 601 and throttle part 4, reach in, the 5th drainage channel of low pressure zone shunting, the 3rd drainage
On passage 904.
The flow direction of middle pressure area drainage channel as shown in Figure 1 and Figure 4, high pressure oil reach the through hole 801 of first seal 8
Enter by the axial oilhole 901 on stent 9 in radial direction oil hole 902,7 continuous eccentric motion of compliant scroll disk, lubricating oil passes through
Through hole 802 simultaneously intermittently enters in 3rd bearing chamber to lubricate 3rd bearing along the 5th drainage channel.When axial oilhole 903 with
When axial oilhole 701 misplaces, small part lubricating oil can gather in the accommodating chamber of eccentric block 15, with 12 rotating eccentricity block of shaft
15 can stir the lubricating oil of accumulation and hit down on anti-rotation mechanism, lubricate anti-rotation mechanism.
The flow direction of low pressure zone drainage channel as shown in Figure 1 and Figure 4, high pressure oil reach the through hole 801 of first seal 8
Enter by the axial oilhole 901 on stent 9 in the 3rd drainage channel 904, while section can be also set in the 3rd drainage channel 904
Stream unit 4, further throttles the lubricating oil current limliting for flowing to low-pressure area Ps.Into the 3rd drainage channel 904 on stent 9 and warp
Axially oil duct 905 and radial direction oil 906 enter in clutch shaft bearing chamber to lubricate first lubricating oil after the throttling of throttle part 4
Bearing 10.
Entered by the lubricating oil of clutch shaft bearing chamber by the 4th drainage channel and second bearing 13 lubricated in second bearing chamber,
And finally it flow to low-pressure oil storage area B.
The screw compressor of the present embodiment is additionally provided with sealing structure between the said structure of part, so that lubricating oil or cold
Medium gas body is flowed according to predefined paths within the compressor.As shown in Figure 1, the sealing structure of the present embodiment includes：
The second seal 5a being arranged between nose cover 2 and fixed scroll 6, second seal 5a are circumferentially positioned at first
The junction of 202 and second drainage channel 601 of drainage channel.
The 3rd seal 5b being arranged on the binding face of the back side of fixed scroll 6 and the end face of nose cover 2, the 3rd sealing
Cavities seals between the back side of fixed scroll 6 and nose cover 2 are formed exhaust higher-pressure region Pd by part 5b.To utilize three regions
Between difference force as power, and combine drainage channel and realize compression power traction oil lubrication or lubrication oil circulation oil return.
The 4th seal 5c in clutch shaft bearing bottom of chamber portion is arranged on, to seal Zhong Ya back pressures area Pm.
The 5th seal 5d in cover board 11 is embedded, the 5th seal 5d is oil baffle, to prevent lubricating oil too quickly
Clearance backflow between cover board 11 and shaft 12 makes to store one in clutch shaft bearing chamber into the low-pressure oil storage area B in casing 1
Fixed lubricating oil, ensures that clutch shaft bearing 10 is sufficiently lubricated, excessive lubricating oil can be back to casing 1 from through hole 11a
In interior low-pressure oil storage area B.
Embodiment two：
The screw compressor of embodiment two is mainly changed in arrangement and the first seal 8 of the 5th drainage channel
The second communicating passage arrangement, specifically, as shown in Figure 5 and Figure 6, the 3rd drainage channel 904 of embodiment two is still
It is formed in stent 9 and is obliquely installed, connects the port of the second drainage channel 601 and clutch shaft bearing chamber.In first seal 8
The second communicating passage except through hole 801 with include connecting the oil groove 803 of through hole 801 and through hole 802 in addition to through hole 802, by the
Five drainage channels are disposed entirely within orbiter 7, and logical circulation road is connected by the second communicating passage and the 5th drainage channel
It is logical.
As shown in Figure 7 and Figure 8, oil groove 803 can take beeline between through hole 801 and through hole 802 with by through hole 801
Connected with through hole 802.Oil groove 803 can also be that starting point is with through hole 801 around a circle in first seal 8 and with through hole 802
Terminal makes through hole 801 be connected with through hole 802.
Embodiment three：
The screw compressor of embodiment three mainly change the arrangement of the 3rd drainage channel and the 5th drainage channel with
And the arrangement of the second communicating passage in first seal 8 is adaptively changed, specifically, as shown in figure 9, reducing
The materials of stent 9, are substituted by drainage tube 17 and are arranged on the 3rd drainage channel of a part in stent 9 originally, another part the
Three drainage channels are still formed in stent 9 to connect the second drainage channel 601 and drainage tube 17.Specifically, it is arranged in stent 9
The 3rd drainage channel include axial oilhole 901 and radial direction oil hole 907.5th drainage channel is disposed entirely within stent 9, including
Axial oilhole 901 and radial direction oil hole 902, are provided with throttle part 4 in radial direction oil hole 902.So that the 5th drainage channel can be held
Continue and inject lubricating oil into 3rd bearing chamber.
3rd drainage channel and the 5th drainage are in all with one section of axial direction oilhole 901, correspondingly second in first seal 8
Communicating passage only includes a through hole corresponding to axial oilhole 901.
Example IV：
The screw compressor of example IV changes the arrangement of drainage tube 17, such as Figure 10 on the basis of embodiment three
It is shown, axial oil duct 905, radial direction oil 906 and radial direction oil hole 907 on stent 9 are eliminated, is changed to open up on cover board 11 logical
Through hole 11b is simultaneously inserted into the bottom of drainage tube 17 by hole 11b, injects lubricating oil to realize to clutch shaft bearing chamber.
Present invention also provides a kind of throttle structure, and as shown in figure 11, the throttle structure of the present embodiment includes：Head 406
(outside diameter d2), thread segment 403, linkage section 407 (outside diameter d3) and oilhole.Wherein, linkage section 407 is arranged on 406 He of head
Between thread segment 403, the outside diameter of thread segment 403 is less than the radial dimension on head 406.Oilhole, is arranged on head 406 and linkage section
In 407, the first end of oilhole is extended on the end face on head 406, and the second end of oilhole extends to the peripheral surface of linkage section 407
On.
For the throttle structure of the present embodiment when being inserted into pipeline, head 406 is to fixed restriction structure, tube wall and screw thread
Tiny path is formed between section 403, and extends the path length of fluid flowing, plays throttling action.
Specifically, as shown in figure 12, the oilhole of the present embodiment includes the radial direction oil hole radially extended along linkage section 407
402 and along the axially extending axial oilhole 401 in head 406, radial direction oil hole 402 is connected with axial oilhole 401, said structure
Easy to the processing of throttle structure.
The thread groove optional triangle or trapezoidal of thread segment 403, sectional dimension (i.e. 404 path d1 of tooth bottom, crest portion
405 major diameter d, pitch P) and the aperture D1 of axial oilhole 401, the aperture D2 sizes of radial direction oil hole 402 can be according to actual compressor
The lubricants capacity for being vented oil back chamber A accumulations and the oil mass for supplying friction lubricating or recirculating oil quantity design (can be according to actual compressors
Experimental conditions select optimal design size).Linkage section 407 can be that optical axis section is alternatively thread segment.Head 406 can lead to tube wall
Cross slight interference or helicitic texture step up solid glue water mode connect installation it is fixed on.The generally radially aperture D2 ＜ axis of oilhole 402
To the aperture D1 of oilhole 401.
Preferably, the aperture of radial direction oil hole 402 can select in the range of 0.1mm~1mm, throttle structure thread segment 403
The major diameter d in crest portion 405 is smaller 0.03mm~0.1mm than the internal diameter of pipeline.
Preferably, throttle structure is plastics or the cylinder of metal.
The throttle structure of the present embodiment can be used in throttle part 4 in the screw compressor of the various embodiments described above.Certainly
The throttle structure not shown in other figures can also be used, as long as restriction effect can be played.
By above drainage channel and throttle structure, the high pressure oil of the exhaust oil back chamber A on nose cover 2 is logical through the first drainage
Road 202, and along after the throttling of thread segment 403 of throttle structure by radial direction oil hole 402 and axial oilhole 401, afterwards along quiet whirlpool
The second drainage channel 601 on capstan 6 enters the 3rd drainage channel and the 5th drainage channel.
Present invention also provides a kind of air conditioner, includes compressor according to the air conditioner (not shown) of the present embodiment,
Compressor is above-mentioned screw compressor.The air conditioner of the present embodiment has the characteristics that reliable long lifespan.
Further, the air conditioner of the present embodiment is on-board air conditioner.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：
Lubricating oil in housing flows within the compressor with the refrigerant for entering screw compressor, finally converges in and is vented back
In oil pocket.By overcurrent communication between the exhaust oil back chamber and second bearing chamber of screw compressor, make in exhaust oil back chamber
Lubricating oil can be back in second bearing chamber, the lubricants capacity being effectively guaranteed in second bearing chamber, and then ensure that
The lubricant effect of second bearing, solves the problems, such as second bearing insufficient lubrication.Meanwhile flow channels include connection exhaust oil back chamber
The first drainage channel, the second drainage channel and the 3rd drainage channel with clutch shaft bearing chamber and connect clutch shaft bearing chamber and second
4th drainage channel of bearing bore.Make flow channels that the lubricating oil being vented in oil back chamber effectively are directed to second bearing and the
In one bearing, the lubrication shortage of oil between motor and other structures, solution can be caused in exhaust oil back chamber to avoid in grease
The problem of certainly compressor internal lubrication oil circulation oil return is difficult, improves the reliability of compressor longtime running.
In the description of the present application, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation or position shown in the drawings and close
System, is for only for ease of description the application and simplifies description, in the case where not making conversely explanation, these nouns of locality do not indicate that
There must be specific orientation with the device or element for implying meaning or with specific azimuth configuration and operation, therefore cannot manage
Solve as the limitation to the application protection domain；The noun of locality " inside and outside " refers to relative to inside and outside each component profile in itself.
For the ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that spatially relative term is intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Furthermore, it is necessary to explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts to be distinguished, do not have Stated otherwise such as, above-mentioned word does not have particular meaning, therefore it is not intended that to this
Apply for the limitation of protection domain.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (16)
- A kind of 1. screw compressor, it is characterised in that including：Housing, the housing include casing (1) and the nose cover (2) being connected with the casing (1), are set on the casing (1) There is the first air entry, first row gas port (203) is provided with the nose cover (2) and is connected with the first row gas port (203) Exhaust oil back chamber (A)；Fixed scroll (6) and orbiter (7), are arranged in the casing (1), are provided with the fixed scroll (6) and institute The second exhaust port (602) stated the second air entry of the first air entry connection and connected with the first row gas port；Stent (9), is arranged on the orbiter (7) towards the side of first air entry；Motor (14) and shaft (12), are arranged in the casing (1), and the motor (14) drives the shaft (12) to rotate, The first end of the shaft (12) penetrates the stent (9) and drives the orbiter (7) to rotate, and the of the shaft (12) Clutch shaft bearing (10) is provided between one end and the stent (9), the clutch shaft bearing (10) is contained in the of the stent (9) In one bearing bore, second bearing (13), the second bearing are provided between the second end and casing (1) of the shaft (12) (13) it is contained in the second bearing chamber of the casing (1)；Wherein, the screw compressor further includes the mistake logical circulation road for connecting the exhaust oil back chamber (A) and the second bearing chamber, The first drainage channel (202) that logical circulation road includes being arranged in the nose cover (2) described excessively, be arranged on the fixed scroll (6) the 3rd drainage of the second drainage channel (601), connection second drainage channel (601) and the clutch shaft bearing chamber on Passage (904) and the 4th drainage channel being arranged in the shaft (12), the 4th drainage channel connection described first Bearing bore and the second bearing chamber.
- 2. screw compressor according to claim 1, it is characterised in that be provided with the first connection on the stent (9) and lead to Road, the 3rd drainage channel (904) are connected by first communicating passage with the clutch shaft bearing chamber.
- 3. screw compressor according to claim 1, it is characterised in that the 3rd drainage channel (904) is formed in institute State in stent (9).
- 4. screw compressor according to claim 1, it is characterised in that part the 3rd drainage channel (904) is formed In the stent (9), remainder is formed in drainage tube (17).
- 5. screw compressor according to claim 1, it is characterised in that be provided with the 3rd axis on the orbiter (7) Chamber is held, the screw compressor, which further includes, connects the 3rd bearing chamber and the 5th drainage channel for crossing logical circulation road.
- 6. screw compressor according to claim 5, it is characterised in that a part of 5th drainage channel is arranged on institute State in stent (9) and be connected with the logical circulation road of crossing, a part of 5th drainage channel is arranged on the orbiter (7) In.
- 7. screw compressor according to claim 5, it is characterised in that the 5th drainage channel is arranged on the dynamic whirlpool It is connected in capstan (7) and with the logical circulation road of crossing.
- 8. screw compressor according to claim 5, it is characterised in that the 5th drainage channel is arranged on the stent (9) it is connected in and with the logical circulation road of crossing.
- 9. the screw compressor according to any one of claim 6 to 8, it is characterised in that the stent (9) and described dynamic First seal (8) is provided between scroll plate (7), the second communicating passage, the mistake are provided with the first seal (8) Logical circulation road is connected by second communicating passage with the 5th drainage channel.
- 10. screw compressor according to claim 5, it is characterised in that first drainage channel and/or the described 5th Throttle part (4) is provided with drainage channel, is lubricated with reducing in first drainage channel and/or the 5th drainage channel The flow velocity of oil.
- A kind of 11. throttle structure, it is characterised in that including：Head (406), thread segment (403) and the linkage section being arranged between the head (406) and the thread segment (403) (407), the outside diameter of the thread segment (403) is less than the radial dimension of the head (406)；Oilhole, is arranged in the head (406) and the linkage section (407), and the first end of the oilhole extends to the head On the end face in portion (406), the second end of the oilhole is extended in the peripheral surface of the linkage section (407).
- 12. throttle structure according to claim 11, it is characterised in that the oilhole is included along the linkage section (407) The radial direction oil hole (402) radially extended and along the head (406) axially extending axial oilhole (401), the radial direction Oilhole (402) is connected with the axial oilhole (401).
- 13. throttle structure according to claim 11, it is characterised in that the head (406) is cylinder.
- A kind of 14. screw compressor, it is characterised in that including：Housing, the housing include casing (1) and the nose cover (2) being connected with the casing (1), are set on the casing (1) There is the first air entry, first row gas port (203) is provided with the nose cover (2) and is connected with the first row gas port (203) Exhaust oil back chamber (A)；Fixed scroll (6) and orbiter (7), are arranged in the casing (1), are provided with the fixed scroll (6) and institute The second exhaust port (602) stated the second air entry of the first air entry connection and connected with the first row gas port；Stent (9), is arranged on the orbiter (7) towards the side of first air entry；Motor (14) and shaft (12), are arranged in the casing (1), and the motor (14) drives the shaft (12) to rotate, The first end of the shaft (12) penetrates the stent (9) and drives the orbiter (7) to rotate, and the of the shaft (12) Clutch shaft bearing (10) is provided between one end and the stent (9), the clutch shaft bearing (10) is contained in the of the stent (9) In one bearing bore, second bearing (13), the second bearing are provided between the second end and casing (1) of the shaft (12) (13) it is contained in the second bearing chamber of the casing (1)；Wherein, the screw compressor further includes the mistake logical circulation road for connecting the exhaust oil back chamber (A) and the second bearing chamber, The first drainage channel (202) that logical circulation road includes being arranged in the nose cover (2) described excessively, be arranged on the fixed scroll (6) the 3rd drainage of the second drainage channel (601), connection second drainage channel (601) and the clutch shaft bearing chamber on Passage (904) and the 4th drainage channel being arranged in the shaft (12), the 4th drainage channel connection described first Set in bearing bore and the second bearing chamber, first drainage channel (202) and/or the 3rd drainage channel (904) There are throttle structure, throttle structure of the throttle structure any one of claim 11 to 13.
- 15. a kind of air conditioner, including compressor, it is characterised in that the compressor for any one of claims 1 to 10 or Screw compressor described in claim 14.
- 16. air conditioner according to claim 15, it is characterised in that the air conditioner is on-board air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127269.1U CN207349066U (en) | 2017-09-04 | 2017-09-04 | scroll compressor, throttling structure and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127269.1U CN207349066U (en) | 2017-09-04 | 2017-09-04 | scroll compressor, throttling structure and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207349066U true CN207349066U (en) | 2018-05-11 |
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ID=62412461
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721127269.1U Active CN207349066U (en) | 2017-09-04 | 2017-09-04 | scroll compressor, throttling structure and air conditioner |
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| CN (1) | CN207349066U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630814A (en) * | 2017-09-04 | 2018-01-26 | 珠海格力电器股份有限公司 | Scroll compressor, throttling structure and air conditioner |
| CN114033694A (en) * | 2021-12-15 | 2022-02-11 | 广东美的环境科技有限公司 | Throttling device, scroll compressor and temperature control equipment |
| CN114183346A (en) * | 2021-12-17 | 2022-03-15 | 珠海格力电器股份有限公司 | Scroll compressor |
| WO2023089750A1 (en) * | 2021-11-19 | 2023-05-25 | 三菱電機株式会社 | Compressor and refrigeration cycle device using same |
-
2017
- 2017-09-04 CN CN201721127269.1U patent/CN207349066U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630814A (en) * | 2017-09-04 | 2018-01-26 | 珠海格力电器股份有限公司 | Scroll compressor, throttling structure and air conditioner |
| CN107630814B (en) * | 2017-09-04 | 2023-10-03 | 珠海格力电器股份有限公司 | Vortex compressor, throttling structure and air conditioner |
| WO2023089750A1 (en) * | 2021-11-19 | 2023-05-25 | 三菱電機株式会社 | Compressor and refrigeration cycle device using same |
| CN114033694A (en) * | 2021-12-15 | 2022-02-11 | 广东美的环境科技有限公司 | Throttling device, scroll compressor and temperature control equipment |
| CN114183346A (en) * | 2021-12-17 | 2022-03-15 | 珠海格力电器股份有限公司 | Scroll compressor |
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