CN205025807U - Bearing assembly for centrifugal compressor - Google Patents
Bearing assembly for centrifugal compressor Download PDFInfo
- Publication number
- CN205025807U CN205025807U CN201520799136.3U CN201520799136U CN205025807U CN 205025807 U CN205025807 U CN 205025807U CN 201520799136 U CN201520799136 U CN 201520799136U CN 205025807 U CN205025807 U CN 205025807U
- Authority
- CN
- China
- Prior art keywords
- bearing
- spacer
- centrifugal compressor
- outer ring
- motor shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 74
- 239000003507 refrigerant Substances 0.000 claims abstract description 34
- 238000005057 refrigeration Methods 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 28
- 239000002826 coolant Substances 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 12
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 23
- 238000005461 lubrication Methods 0.000 description 21
- 230000009286 beneficial effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 239000000314 lubricant Substances 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000010181 polygamy Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Compressor (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a bearing assembly for centrifugal compressor, centrifugal compressor include casing and motor shaft, inject in the casing to hold the chamber, and the motor shaft is rotationally established and is being held the intracavity. Bearing assembly includes: bearing frame, a plurality of bearing and spacer ring. The bearing frame is suitable for to establish and is holding the intracavity, is equipped with the shaft hole on the bearing frame, and the motor shaft is suitable for and inserts the shaft hole, still is equipped with on the bearing frame to be suitable for a leading -in refrigerant channel who holds the refrigerant of intracavity. A plurality of bearings are suitable for the overcoat just to cooperate in the shaft hole on the motor shaft. The spacer ring lies in between two adjacent bearings, is equipped with the 2nd refrigerant channel in an intercommunication refrigerant channel and shaft hole on the spacer ring. According to the utility model discloses a bearing assembly for centrifugal compressor has simplified the compressor structure, and the compressor assembly is simple, convenient, and assembly efficiency is high. And the unit use of having saved lubricating oil, avoided the influence that lubricating oil produced to the unit performance.
Description
Technical field
The utility model relates to compressor field, especially relates to a kind of centrifugal compressor bearing unit.
Background technique
Bearing is the key components and parts of centrifugal refigerating compressor, and in compressor operating, bearing plays the important function of carrying.On current centrifugal compressor, bearing used mainly comprises oil-lubricated bearing and oilless bearing, and wherein oil-lubricated bearing divides oil lubrication sliding bearing and oil lubrication rolling bearing.
Traditional oil-lubricated bearing, in centrifugal compressor running, needs special oil supply system to carry out lubrication to bearing.Oil supply system comprises oil heater, oil pump, oil cooler etc., and lubricant oil is fed to bearing oil place to it and carries out lubrication, set structure more complicated by oil pump.But in compressor inside because transmission cavity (or machine cavity) pressure is lower, inevitably in running, lubricant oil can penetrate in unit refrigerant system.On the one hand unit performance is had an impact, reduce bearing cooling and lubricating effect on the other hand.So under normal circumstances, use the compressor of oil-lubricated bearing can be furnished with special oil return system.
Model utility content
The application is intended to solve the technical problem existed in prior art.For this reason, the utility model aims to provide a kind of centrifugal compressor bearing unit, and this bearing unit lubrication is convenient, and structure is very simple.
According to centrifugal compressor bearing unit of the present utility model, described centrifugal compressor comprises casing and motor shaft, receiving cavity is limited in described casing, described motor shaft is located in described receiving cavity rotationally, described bearing unit comprises: bearing support, and described bearing support is suitable for being located in described receiving cavity, and described bearing support is provided with axis hole, described motor shaft is suitable for inserting described axis hole, described bearing support is also provided with the first coolant channel being suitable for importing the refrigeration agent in described receiving cavity; Multiple bearing, described multiple bearing is suitable for outer be enclosed within described motor shaft and be engaged in described axis hole; Spacer ring, described spacer ring is between adjacent two described bearings, and described spacer ring is provided with the second refrigerant passage being communicated with described first coolant channel and described axis hole.
According to centrifugal compressor bearing unit of the present utility model, lubricating, simplifying compressor arrangement by directly being imported between bearing by compressor inner refrigerant, compressor assembling is simple, convenient, and efficiency of assembling is high.And unit saves the use of lubricant oil, avoid the impact that lubricant oil produces unit performance.
In certain embodiments, described multiple bearing is respectively rolling bearing, and each described rolling bearing comprises and is suitable for the outer inner ring be enclosed within described motor shaft, is enclosed within the outer ring on described inner ring and the roller that is connected between described inner ring and described outer ring outward; Described spacer ring comprises cone spacer and outer ring spacer, and described cone spacer is clamped between the inner ring of adjacent two described bearings, and described outer ring spacer is clamped between the outer ring of adjacent two bearings, and described second refrigerant passage is located on described outer ring spacer.
Alternatively, described outer ring spacer is fixedly connected on described bearing support by key or pin.Thus, can play locking and effect that is retaining, fixed structure is also comparatively simple simultaneously, easy-to-operat.
Further, the outlet of described second refrigerant passage be located at described outer ring spacer towards on the sidewall of described bearing.Thus be beneficial to refrigerant injection on the roller of bearing.Because refrigeration agent can form spurting when second refrigerant passage flows out, this design can make the surface of the roller be ejected into form composite lubricating film, and lubrication effect is abundant.
Advantageously, described outlet is arranged towards described roller.Thus it is more abundant to be beneficial to lubrication effect, reach lubrication and the uniform effect of cooling.
In certain embodiments, described second refrigerant passage comprises the groove on the periphery wall being formed in described outer ring spacer, and described groove is communicated with described first coolant channel.
Particularly, described second refrigerant passage also comprises elongated hole, and one end of described elongated hole is communicated with described groove and the other end extends towards the direction of the central axis of described axis hole, and described outlet is located on the inwall of described elongated hole.
Preferably, described groove is extended along the circumferential direction of described outer ring spacer.Thus, the refrigeration agent in second refrigerant passage distributes more equably in the circumference of spacer ring, is beneficial to lubrication and cooling.
Advantageously, the axial two ends of described multiple bearing are respectively equipped with for stopping the stop member that described bearing moves axially.
In certain embodiments, centrifugal compressor also comprises the driven pump being suitable for the refrigeration agent in described receiving cavity being pumped into described first coolant channel.Thus, the continual lubrication and cooling of refrigeration agent can be realized.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of centrifugal compressor at bearing place according to the utility model embodiment;
Fig. 2 is that Fig. 1 centre circle shows A portion enlarged diagram;
Fig. 3 is the structural representation of the outer ring spacer according to the utility model embodiment;
Fig. 4 is the cross-sectional schematic along C-C direction in Fig. 3.
Reference character:
Bearing unit 100,
Receiving cavity V,
Bearing support 1, axis hole 11, first coolant channel 12, first keyway 13,
Motor shaft 2, lining 21,
Bearing 3, rolling bearing 30, inner ring 31, outer ring 32, roller 33,
Spacer ring 4, cone spacer 41, outer ring spacer 42, main body portion 421, extension part 422, second refrigerant passage 43, groove 431, elongated hole 432, outlet the 433, second keyway 44, hole for back flow 45,
Stop member 5, back-up ring 51, block 52, key 6.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " width ", " thickness ", " on ", D score, " left side ", " right side ", " top ", " end ", " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, unless otherwise clearly defined and limited, term " is connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; It can be mechanical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Below with reference to Fig. 1-Fig. 4, the centrifugal compressor bearing unit 100 according to the utility model embodiment is described.Wherein, centrifugal compressor comprises casing (scheming not shown) and motor shaft 2, and limit receiving cavity V in casing, motor shaft 2 is located in receiving cavity V rotationally.
According to the centrifugal compressor bearing unit 100 of the utility model embodiment, comprising: bearing support 1, multiple bearing 3 and spacer ring 4.
Wherein, bearing support 1 is located in receiving cavity V, and bearing support 1 is provided with axis hole 11, and motor shaft 2 is suitable for inserting axis hole 11.Multiple bearing 3 is suitable for outer be enclosed within motor shaft 2 and be engaged in axis hole 11, and spacer ring 4 is between adjacent two bearings 3.
See figures.1.and.2, bearing support 1 is also provided with the first coolant channel 12 being suitable for the refrigeration agent imported in receiving cavity V, spacer ring 4 is provided with the second refrigerant passage 43 of connection first coolant channel 12 and axis hole 11.
Such as shown in Figure 1, the first coolant channel 12 arranges opening in the position filling refrigeration agent towards receiving cavity V of bearing support 1, and the refrigeration agent in receiving cavity V is by automatic inlet opening.
Owing to producing pressure reduction in refrigeration system running, normally under runnability, refrigeration agent can get liquid from receiving cavity V automatically, is then fed in the bearing 3 of compressor by the first coolant channel 12, second refrigerant passage 43 successively, reaches the object of cooling, lubricating bearings 3.
In view of the physical property of refrigeration agent throttling flash distillation, form spurting when refrigeration agent flows out from second refrigerant passage 43, the outlet 433 of second refrigerant passage 43 is equivalent to jetburner.The design of this oilless bearing assembly distinctive lubrication spacer ring spray-hole, can be beneficial to refrigeration agent evenly diffusion in axis hole 11, improve lubrication effect.
The bearing unit of above-mentioned support motor axle 2, can use the refrigeration agent in receiving cavity V to carry out lubrication, not need special lubricating oil system.Like this, unit does not need special oil supply system and oil return system, just eliminates the parts such as oil heater, oil strainer, oil cooler needed for lubricating oil system on the compressor yet, thus simplifies compressor arrangement, compressor is assembled simple, convenient, improve efficiency of assembling.
And adopt the mode of this oil-free lubrication, save lubricant oil, thus in system, only can there is this kind of medium of refrigeration agent, also just avoid the impact that lubricant oil produces unit performance, be beneficial to lifting unit performance.
According to the centrifugal compressor bearing unit 100 of the utility model embodiment, lubricating, simplifying compressor arrangement by directly being imported between bearing 3 by compressor inner refrigerant, compressor assembling is simple, convenient, and efficiency of assembling is high.And unit saves the use of lubricant oil, avoid the impact that lubricant oil produces unit performance.
In certain embodiments, as depicted in figs. 1 and 2, multiple bearing 3 is respectively rolling bearing 30, and each rolling bearing 30 comprises the outer inner ring 31 be enclosed within motor shaft 2, is enclosed within the outer ring 32 on inner ring 31 and the roller 33 that is connected between inner ring 31 and outer ring 32 outward.
Wherein, roller 33 can be spheroid, and roller 33 also can be cylinder or needle roller, does not do concrete restriction here.
In FIG, spacer ring 4 can be one, and the axial both sides of spacer ring 4 can be respectively equipped with a bearing 3, and the axial both sides of spacer ring 4 also can be respectively equipped with multiple bearing 3, or the side of spacer ring 4 is provided with a bearing 3 and opposite side is provided with multiple bearing 3.Namely the form that arranges of bearing 3 is also join one, one to join many, the first-class multiple combination of polygamy, does not do concrete restriction here.
The bearing 3 of spacer ring 4 both sides can be arrange back-to-back (as shown in Figure 1), also can be face-to-face placement.Certainly, when the number of bearing 3 is more than two, spacer ring 4 also can be arranged to multiple, with by spaced apart for multiple bearing 3.
As Figure 1-Figure 2, spacer ring 4 comprises cone spacer 41 and outer ring spacer 42, and cone spacer 41 is clamped between the inner ring 31 of adjacent two bearings 3, and outer ring spacer 42 is clamped between the outer ring 32 of adjacent two bearings 3, and second refrigerant passage 43 is located on outer ring spacer 42.
Wherein, the inner ring 31 of bearing 3 is enclosed within motor shaft 2 with cone spacer 41 is all closely outer, is interference fit between inner ring 31 and motor shaft 2.Be transition fit between the outer ring 32 of bearing 3 and bearing support 1, the outer ring 32 of bearing 3, outer ring spacer 42 and bearing support 1 three are without relative movement.
Particularly, outer ring spacer 42 is fixedly connected on bearing support 1.Alternatively, outer ring spacer 42 is fixedly connected on bearing support 1 by key 6.In the example of Fig. 1 and Fig. 3, the inner circle wall of axis hole 11 is also provided with the first keyway 13, the periphery wall of outer ring spacer 42 is provided with the second keyway 44, and key 6 is stuck in the first keyway 13 and the second keyway 44.Key between outer ring spacer 42 with bearing support 1 is connected, and can play locking and effect that is retaining, and fixed structure is also comparatively simple simultaneously, easy-to-operat.
Certainly, outer ring spacer 42 is also fixedly connected on bearing support 1 by links such as pins, does not also do concrete restriction here.
Further, the outlet 433 of second refrigerant passage 43 be located at outer ring spacer 42 towards on the sidewall of bearing 3, thus be beneficial to refrigerant injection on the roller 33 of bearing.
Because refrigeration agent can form spurting when second refrigerant passage 43 flows out, this design can make the surface of the roller 33 be ejected into form composite lubricating film, and lubrication effect is abundant.
Preferably, as shown in Figure 4, the opposing sidewalls of outer ring spacer 42 is all located at outlet 433.On a sidewall of outer ring spacer 42, an outlet 433 can be provided with, also can be provided with multiple outlet 433.
Advantageously, outlet 433 is arranged towards roller 33, thus it is more abundant to be beneficial to lubrication effect, reaches lubrication and the uniform effect of cooling.
In certain embodiments, as shown in figs 2-4, second refrigerant passage 43 comprises the groove 431 on the periphery wall being formed in outer ring spacer 42, and groove 431 is communicated with the first coolant channel 12.Like this, the perforate on the inner circle wall of axis hole 11 of the first coolant channel 12, and the corresponding perforate of groove 431 is arranged, just can be communicated with the first coolant channel 12 and second refrigerant passage 43, structure is very convenient and practical.
Particularly, second refrigerant passage 43 also comprises elongated hole 432, and one end of elongated hole 432 is communicated with groove 431 and the other end extends towards the direction of the central axis of axis hole 11, exports 433 and is located on the inwall of elongated hole 432.Thus be beneficial to refrigeration agent guide roller 33 place.
Preferably, groove 431 is extended along the circumferential direction of outer ring spacer 42, like this, easily makes the refrigeration agent in second refrigerant passage 43 distribute more equably in the circumference of spacer ring 4, is beneficial to lubrication and cooling.
Wherein, the circumferential lengths of groove 431 on outer ring spacer 42 can set by structural requirement, and the central angle of groove 431 is greater than 0 degree, and the central angle of groove 431 can reach 360 degree, and in figure 3, the central angle of groove 431 is greater than 90 degree and is less than 180 degree.
In addition, outer ring spacer 42 is provided with the radial hole for back flow 45 extended, so that discharged by refrigeration agent unnecessary between two bearings 3.
Preferably, as shown in Figure 4, the main body portion 421 that outer ring spacer 42 comprises ring and the extension part 422 extended internally from the part inner circle wall of main body portion 421, groove 431 is located on main body portion 421, and elongated hole 432 is located on extension part 422.
Wherein, extension part 422 can be annular, and the central angle of extension part 422 also can be less than 360 degree.As shown in Figure 4, the cross section that outer ring spacer 42 is provided with the part of extension part 422 is T-shaped, and like this, extension part 422 can be spaced apart with the bearing 3 of both sides, avoids rubbing.
Advantageously, the second keyway 44 be located at outer ring spacer 42 to having on the main body portion 421 of extension part 422, thus avoid the structural strength of outer ring spacer 42 too low.
Particularly, as shown in Figure 1, on motor shaft 2, also cover has lining 21, and lining 21 is only against on bearing 3, and lining 21 applies certain pretightening force to bearing 3, for preloaded bearing 3.
Advantageously, the axial two ends of multiple bearing 3 are respectively equipped with for stopping the stop member 5 that bearing 3 moves axially, and the setting of stop member 5 is used for playing thrust face effect when bearing 3 bears thrust load.
As shown in Figure 1, stop member 5 comprises back-up ring 51, and back-up ring 51 is arranged around axis hole 11, and back-up ring 51 backstop is on the outer ring 32 of the rolling bearing 30 of side.Stop member 5 also comprises block 52, and block 52 and back-up ring 51 are positioned at the axial both sides of multiple bearing 3, and namely back-up ring 51 backstop is on the outer ring 32 of the rolling bearing 30 of opposite side.In FIG, back-up ring 51 moves right for avoiding rolling bearing 30, and block 52 is moved to the left for avoiding rolling bearing 30.
Alternatively, as shown in Figure 1, back-up ring 51 is formed as individual part, and block 52 is integrally formed on bearing support 1, and this inner circle wall being just equivalent to axis hole 11 designs boss.Advantageously, block 52 is formed as annular.Certainly, block 52 also can be formed as the individual part of similar back-up ring 51, does not do concrete restriction here.
In the specific embodiment shown in Fig. 1, in the assembly process of compressor, between installation bearing 3, back-up ring 51 will first be enclosed within motor shaft 2.Then be enclosed within outer successively to bearing 3, spacer ring 4 on motor shaft 2, then lining 21 is assemblied on motor shaft 2.Afterwards key 6 is contained in the second keyway 44 on outer ring spacer 42.During assembling, bearing support 1 is assembled on motor shaft 2 from left to right, and the first keyway 13 will align with key 6 when mounted, and outer ring spacer 42 can be fixed on on bearing support 1 by key 6.
In compressor operating process, the inner ring 31 of bearing 3 and cone spacer 41 are with motor shaft 2 high speed rotating, refrigeration agent is by the first coolant channel 12 on bearing support 1, refrigeration agent is delivered in the groove 431 on outer ring spacer 42, refrigeration agent arrives outlet 433 place through elongated hole 432 again, refrigeration agent ejects from outlet 433, is finally injected on the roller 33 of bearing 3, plays Homogeneous cooling, lubrication.
Certainly, above-mentioned bearing 3 also can be sliding bearing, does not do concrete restriction here.
In certain embodiments, bearing unit 100 also comprises the driven pump (scheming not shown) being suitable for the refrigeration agent in receiving cavity V being pumped into the first coolant channel 12, like this, when unit breaks down, in as too low in condenser pressure or the anxious stopping time, refrigeration agent can carry out adherence pressure by driven pump to be completed bearing 3 and lubricates.So, use the compressor of this oilless bearing assembly can realize the continual lubrication and cooling of refrigeration agent.
According to the centrifugal compressor bearing unit 100 of the utility model embodiment, by arranging the first coolant channel 12 and second refrigerant passage 43 is beneficial to refrigeration agent lubricating bearings 3, realizing oil-free lubrication, simplifying the structure of unit, convenient for assembly, be beneficial to and reduce costs.
Certainly, centrifugal compressor also comprises the parts such as stator, rotor, impeller, and the structure and working principle of the parts such as stator, rotor, impeller is prior art, repeats no more here.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (10)
1. a centrifugal compressor bearing unit, described centrifugal compressor comprises casing and motor shaft, limits receiving cavity in described casing, and described motor shaft is located in described receiving cavity rotationally, it is characterized in that, described bearing unit comprises:
Bearing support, described bearing support is suitable for being located in described receiving cavity, and described bearing support is provided with axis hole, and described motor shaft is suitable for inserting described axis hole, described bearing support is also provided with the first coolant channel being suitable for importing the refrigeration agent in described receiving cavity;
Multiple bearing, described multiple bearing is suitable for outer be enclosed within described motor shaft and be engaged in described axis hole;
Spacer ring, described spacer ring is between adjacent two described bearings, and described spacer ring is provided with the second refrigerant passage being communicated with described first coolant channel and described axis hole.
2. centrifugal compressor bearing unit according to claim 1, it is characterized in that, described multiple bearing is respectively rolling bearing, and each described rolling bearing comprises and is suitable for the outer inner ring be enclosed within described motor shaft, is enclosed within the outer ring on described inner ring and the roller that is connected between described inner ring and described outer ring outward;
Described spacer ring comprises cone spacer and outer ring spacer, and described cone spacer is clamped between the inner ring of adjacent two described bearings, and described outer ring spacer is clamped between the outer ring of adjacent two bearings, and described second refrigerant passage is located on described outer ring spacer.
3. centrifugal compressor bearing unit according to claim 2, is characterized in that, described outer ring spacer is fixedly connected on described bearing support by key or pin.
4. centrifugal compressor bearing unit according to claim 2, is characterized in that, the outlet of described second refrigerant passage be located at described outer ring spacer towards on the sidewall of described bearing.
5. centrifugal compressor bearing unit according to claim 4, is characterized in that, described outlet is arranged towards described roller.
6. centrifugal compressor bearing unit according to claim 2, is characterized in that, described second refrigerant passage comprises the groove on the periphery wall being formed in described outer ring spacer, and described groove is communicated with described first coolant channel.
7. centrifugal compressor bearing unit according to claim 6, it is characterized in that, described second refrigerant passage also comprises elongated hole, one end of described elongated hole is communicated with described groove and the other end extends towards the direction of the central axis of described axis hole, and described outlet is located on the inwall of described elongated hole.
8. centrifugal compressor bearing unit according to claim 6, is characterized in that, described groove is extended along the circumferential direction of described outer ring spacer.
9. centrifugal compressor bearing unit according to claim 1, is characterized in that, the axial two ends of described multiple bearing are respectively equipped with for stopping the stop member that described bearing moves axially.
10. centrifugal compressor bearing unit according to claim 1, is characterized in that, also comprises the driven pump being suitable for the refrigeration agent in described receiving cavity being pumped into described first coolant channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520799136.3U CN205025807U (en) | 2015-10-14 | 2015-10-14 | Bearing assembly for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520799136.3U CN205025807U (en) | 2015-10-14 | 2015-10-14 | Bearing assembly for centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205025807U true CN205025807U (en) | 2016-02-10 |
Family
ID=55258345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520799136.3U Active CN205025807U (en) | 2015-10-14 | 2015-10-14 | Bearing assembly for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205025807U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612834A (en) * | 2018-06-11 | 2018-10-02 | 江苏赫夫特齿轮制造有限公司 | High-speed gear box duplex bearing lubrication system |
| CN109058079A (en) * | 2018-09-14 | 2018-12-21 | 珠海格力电器股份有限公司 | Liquid spray ring and refrigerant lubricated bearing assembly |
| CN109416049A (en) * | 2016-04-22 | 2019-03-01 | 三菱重工制冷空调系统株式会社 | Turbo-compressor and the turbine refrigerating plant for having the turbo-compressor |
| DE102018221258A1 (en) | 2017-12-20 | 2019-06-27 | Aktiebolaget Skf | TWO HYBRID BALL BEARINGS AND A COMPRESSOR ASSEMBLY |
| CN111365277A (en) * | 2018-12-26 | 2020-07-03 | 珠海格力电器股份有限公司 | Refrigerant lubricated compressors and air conditioners |
| CN111365283A (en) * | 2018-12-26 | 2020-07-03 | 珠海格力电器股份有限公司 | Bearing assemblies, compressors and air conditioners that spray fluid on both sides of the bearing |
| US20210079953A1 (en) * | 2019-09-18 | 2021-03-18 | Aktiebolaget Skf | Rolling bearing, particularly hybrid rolling bearing for refrigerant compressor |
| US11009035B2 (en) | 2018-04-25 | 2021-05-18 | Aktiebolaget Skf | Two hybrid ball bearings and a compressor bearing arrangement |
| US11143236B2 (en) | 2018-04-25 | 2021-10-12 | Aktiebolaget Skf | Hybrid ball bearing pair and a compressor bearing arrangement |
| US11923746B2 (en) | 2020-01-30 | 2024-03-05 | Carrier Corporation | Magnetic bearing cooling management |
-
2015
- 2015-10-14 CN CN201520799136.3U patent/CN205025807U/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109416049A (en) * | 2016-04-22 | 2019-03-01 | 三菱重工制冷空调系统株式会社 | Turbo-compressor and the turbine refrigerating plant for having the turbo-compressor |
| DE102018221258A1 (en) | 2017-12-20 | 2019-06-27 | Aktiebolaget Skf | TWO HYBRID BALL BEARINGS AND A COMPRESSOR ASSEMBLY |
| US10544828B2 (en) | 2017-12-20 | 2020-01-28 | Aktiebolaget Skf | Two hybrid ball bearings and a compressor bearing arrangement |
| US11143236B2 (en) | 2018-04-25 | 2021-10-12 | Aktiebolaget Skf | Hybrid ball bearing pair and a compressor bearing arrangement |
| US11009035B2 (en) | 2018-04-25 | 2021-05-18 | Aktiebolaget Skf | Two hybrid ball bearings and a compressor bearing arrangement |
| CN108612834A (en) * | 2018-06-11 | 2018-10-02 | 江苏赫夫特齿轮制造有限公司 | High-speed gear box duplex bearing lubrication system |
| CN109058079A (en) * | 2018-09-14 | 2018-12-21 | 珠海格力电器股份有限公司 | Liquid spray ring and refrigerant lubricated bearing assembly |
| EP3795829A4 (en) * | 2018-09-14 | 2021-08-11 | Gree Electric Appliances, Inc. of Zhuhai | LIQUID SPRAY RING AND REFRIGERANT LUBRICATION BEARING ARRANGEMENT |
| US11473625B2 (en) | 2018-09-14 | 2022-10-18 | Gree Electric Appliances, Inc. Of Zhuhai | Liquid injection ring and refrigerant lubricated bearing assembly |
| CN111365277A (en) * | 2018-12-26 | 2020-07-03 | 珠海格力电器股份有限公司 | Refrigerant lubricated compressors and air conditioners |
| CN111365283A (en) * | 2018-12-26 | 2020-07-03 | 珠海格力电器股份有限公司 | Bearing assemblies, compressors and air conditioners that spray fluid on both sides of the bearing |
| US20210079953A1 (en) * | 2019-09-18 | 2021-03-18 | Aktiebolaget Skf | Rolling bearing, particularly hybrid rolling bearing for refrigerant compressor |
| CN112524151A (en) * | 2019-09-18 | 2021-03-19 | 斯凯孚公司 | Rolling bearing, in particular hybrid rolling bearing, for a refrigerant compressor |
| US11067129B2 (en) * | 2019-09-18 | 2021-07-20 | Aktiebolaget Skf | Rolling bearing for refrigerant compressor |
| CN112524151B (en) * | 2019-09-18 | 2025-01-14 | 斯凯孚公司 | Rolling bearings for refrigerant compressors, especially hybrid rolling bearings |
| US11923746B2 (en) | 2020-01-30 | 2024-03-05 | Carrier Corporation | Magnetic bearing cooling management |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205025807U (en) | Bearing assembly for centrifugal compressor | |
| CN202009303U (en) | Oil pump motor | |
| CN107701447B (en) | Oil circuit structure of compressor and compressor | |
| KR102312538B1 (en) | Cooling lubrication system with dry sump | |
| CN112628161A (en) | Air-cooled compressor | |
| US20030070877A1 (en) | Lubrication device for an automatic transmission | |
| KR102312541B1 (en) | Cooling lubrication system with dry sump | |
| CN104612974B (en) | Rotary compressor | |
| CN112503002A (en) | Gas compressor with oblique thrust structure and rotor system | |
| CN207349076U (en) | Pump body subassembly, compressor and indirect heating equipment | |
| CN112424476A (en) | Screw compressor element and machine | |
| CN209990681U (en) | Pitot tube pump bearing lubricating system | |
| CN214577903U (en) | Closed impeller, compressor and gas turbine | |
| CN106337872A (en) | Crankshaft oil channel structure and crankshaft and compressor comprising same | |
| CN205956059U (en) | Automotive water pump | |
| CN104696227B (en) | Rotary compressor | |
| CN214577618U (en) | Crankshaft, variable frequency compressor and refrigeration equipment | |
| CN215058258U (en) | Gas compressor with oblique thrust structure and rotor system | |
| CN214577793U (en) | Air-cooled compressor | |
| CN204532815U (en) | Rotary compressor | |
| CN209414159U (en) | Turn the pump body structure of the cylinder piston compressor and turns the cylinder piston compressor | |
| CN100523511C (en) | Oil discharge reducing device for scroll compressor | |
| CN207004848U (en) | Water pump | |
| CN103206455A (en) | Motor front bearing and centrifugal compressor and refrigeration equipment comprising same | |
| CN202789664U (en) | Centrifugal compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180118 Address after: 401336 Chongqing City, South Bank district Rose Road, No. 15 Co-patentee after: SKF (Chinese) Co. Ltd. Patentee after: Chongqing Midea General Refrigerating Equipment Co., Ltd. Address before: 401336 Chongqing City, South Bank district Rose Road, No. 15 Patentee before: Chongqing Midea General Refrigerating Equipment Co., Ltd. |
|
| TR01 | Transfer of patent right |