CN207131584U - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN207131584U CN207131584U CN201720901857.XU CN201720901857U CN207131584U CN 207131584 U CN207131584 U CN 207131584U CN 201720901857 U CN201720901857 U CN 201720901857U CN 207131584 U CN207131584 U CN 207131584U
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- rotary compressor
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Abstract
The utility model provides a kind of rotary compressor, including：Housing and bent axle, compression assembly, bearing assembly in the housing, the compression assembly is connected with the first end of the bent axle, the bearing assembly includes base bearing, supplementary bearing and strengthens bearing, the base bearing and the supplementary bearing are set in the first end of the bent axle and are located at the top and bottom of the compression assembly respectively, the reinforcement bearing holder (housing, cover) is located on the second end of the bent axle and is fixedly connected with the housing, the cooperation diameter of axle D of the bent axle and the base bearing, the cooperation width B of the bent axle and the reinforcement bearing, meets relational expression：0.3≤B/D ＜ 0.75.Bent axle, strengthen bearing fit width B and bent axle, base bearing coordinates diameter of axle D in the range of more than or equal to 0.3 and less than 0.75, it is ensured that strengthen that the installation of bearing aligning is easy and lubrication works well.
Description
Technical field
Compressor field is the utility model is related to, more specifically, is related to a kind of rotary compressor.
Background technology
Generally, the crankshaft diameter of rotary compressor is smaller, and mechanical friction loss is smaller, rotary compressor
Efficiency is also higher.But crankshaft diameter is smaller, bent axle rigidity is poorer, moreover, rotary compressor is gradually at a high speed in recent years
Change development, compressor rotary speed is higher, and centrifugal force caused by the eccentric mass that bent axle is subject to is bigger, causes bent axle easily to occur because just
Property deficiency and deform the problem of larger, cause vibration of compressor and noise penalty, be also possible to cause rotor scratch stator when serious
Phenomenon occur.Therefore, some rotary compressors strengthen bearing to strengthen pair in one end increase of the bent axle away from compression assembly
The constraint of bent axle, bent axle rigidity can be so significantly improved, reduces vibration and the noise of compressor, and compressor can be improved and turned in height
Operation stability under speed.But bearing is strengthened in increase can bring two problems, a problem is to strengthen the aligning of bearing and bent axle
Installation question, another problem are to strengthen the fuel feeding cooling problem of bearing.
Utility model content
The utility model aims to solve the problem that at least one technical problem present in prior art.
Therefore, the purpose of this utility model is, there is provided one kind strengthens the installation of bearing aligning easily and lubrication effect
Good rotary compressor.
To achieve the above object, the embodiment of the utility model first aspect provides a kind of rotary compressor, including：
Housing and bent axle, compression assembly, bearing assembly in the housing, the first end of the compression assembly and the bent axle
Connection, the bearing assembly include base bearing, supplementary bearing and strengthen bearing, and the base bearing and the supplementary bearing are set in described
It is located in the first end of bent axle and respectively the top and bottom of the compression assembly, the reinforcement bearing holder (housing, cover) is located at the bent axle
It is fixedly connected on second end and with the housing, the cooperation diameter of axle D of the bent axle and the base bearing, the bent axle adds with described
The cooperation width B of strong bearing, meets relational expression：0.3≤B/D ＜ 0.75.
According to bearing theory, bearing width-diameter ratio is smaller, then the aligning performance of bearing is better, and frictional heat is easier is moistened
Lubricating oil is taken away, and bearing temperature rise is smaller, and friction power loss is smaller.But bearing width-diameter ratio is smaller, the bearing capacity of bearing is smaller.By adding
Strong bearing assembly experiment is found, as B/D ＜ 0.75, strengthens bearing and bent axle aligning is easy, avoid and strengthen bearing and bent axle
EDGE CONTACT.Found by performance test, as B/D >=0.3, compressor fricting resistance loss is small, and performance is higher.And work as B/
During D ＜ 0.3, compressor performance drastically deteriorates, and occurs strengthening bearing and crankshaft wear phenomenon, and bearing load carrying capacity is strengthened on surface
Deficiency.By compressor durability experiment, the utility model is found, as B/D >=0.3, compression function is long under heavy load operating mode
Phase is run, and it is enough to strengthen the bearing capacity of bearing, and heat is easily pulled away caused by bearing friction, and lubricating status and cooling are imitated
Fruit is good, therefore B/D is advisable more than or equal to 0.3 and in the range of being less than 0.75.
In one embodiment of the present utility model, the bent axle is less than described with the cooperation diameter of axle D1 for strengthening bearing
During the cooperation diameter of axle D of bent axle and the base bearing, 0.4≤B/D ＜ 0.75.
In this programme, to reduce the friction loss for strengthening bearing, bent axle is reduced with strengthening the diameter of axle of bearing fit section, is made
Bent axle with strengthen bearing cooperation diameter of axle D1 be less than D, now strengthen bearing bearing capacity declined, therefore need to increase bent axle and
Strengthen the cooperation width B of bearing, make 0.4≤B/D ＜ 0.75, to ensure that bent axle is rigidly enough.
In any of the above-described technical scheme, the compression assembly includes cylinder and piston, and the cylinder has compression chamber, institute
Bent axle is stated axially through the compression chamber, the piston is arranged in the compression chamber and is connected with the bent axle, so that institute
Piston can move under bent axle drive.
It is described rotatably also to include in any of the above-described technical scheme：Drive component, the drive component include stator and
Rotor, the stator are fixedly mounted in the housing, and the center of the stator forms installing space, the bent axle edge
The installing space is axially penetrated through, the rotor is arranged in the installing space and is fixedly connected with the bent axle, so that institute
The crank rotation can be driven by stating rotor.
In any of the above-described technical scheme, the reinforcement bearing and the base bearing are respectively positioned at drive component axial direction
On both sides.
Drive component drives crank rotation, strengthens bearing and base bearing is arranged on the both sides of drive component, bent axle is carried out
Constraint, bent axle rigidity is so remarkably improved, reduces vibration and the noise of compressor, and compressor can be improved at high speed
Operation stability.
In any of the above-described technical scheme, lubricating oil is filled with the housing.
In any of the above-described technical scheme, it is preferable that the reinforcement bearing is sliding bearing.
In one embodiment of the present utility model, the lateral wall for strengthening bearing is fixedly connected with the housing.
In this programme, strengthen the direct housing of bearing and be fixedly connected, the few cost of such deisgn product number of parts is low, specifically
The connected mode such as welding or riveting can be used by strengthening bearing and housing.
In one embodiment of the present utility model, support, the branch are set between the reinforcement bearing and the housing
Frame is fixedly connected with the housing, and the reinforcement bearing is fixedly connected by screw with the support.
Support described in this programme and housing are fixedly connected by the mode such as welding or riveting, and are strengthened bearing and are passed through with support
Mode connects for screw, strengthen bearing and be connected with bracket screw so as to strengthen bearing adjustable in the horizontal direction, therefore reinforcement bearing aligning
It is more easy.
In any of the above-described technical scheme, rotary compressor is single cylinder rotary compressor or twin-tub rotation-type compressor
Or multi-cylinder rotary compressor.That is the compression assembly of rotary compressor can include one group of cylinder and piston, also may be used
With including two or more groups cylinder and piston.
In any of the above-described technical scheme, the rotary compressor is swing type or rolling-piston-type.
Additional utility model and advantage of the present utility model will become obvious in following description section, or pass through this reality
Recognized with new practice.
Brief description of the drawings
Description of the of the present utility model above-mentioned and/or additional utility model and advantage from combination accompanying drawings below to embodiment
In will be apparent and be readily appreciated that, wherein：
Fig. 1 is the structural representation for the rotary compressor that one embodiment of the present utility model provides；
Fig. 2 is the structural representation for the rotary compressor that another embodiment of the present utility model provides；
Fig. 3 is the structural representation for the rotary compressor that further embodiment of the present utility model provides；
Fig. 4 is the curve map that rotary compressor cop changes with B/D.
Wherein, the corresponding relation between the reference in Fig. 1 to Fig. 3 and component names is：
1 main casing, 2 upper shells, 3 lower houses, 4 lubricating oil, 5 stators, 6 rotors, 7 bent axles, 8 cylinders, 9 pistons, 10 main shafts
Hold, 11 supplementary bearings, 12 slide plates, 13 springs, 14 exhaust valve plates, 15 mufflers, 16 strengthen bearing, 17 supports, 18 screws.
Embodiment
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting, this Shen
The feature in embodiment and embodiment please can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
It is new to be different from mode described here using other and implement, therefore, the scope of protection of the utility model not by
The limitation of following public specific embodiment.
According to a kind of rotary compressor of the utility model embodiment, as shown in Figure 1 to Figure 3, rotary compressor bag
Include：Housing, drive component, bent axle 7, compression assembly and bearing assembly.Housing includes tubular main casing 1, installed in main casing 1
The upper shell 2 on top and the lower house 3 installed in the bottom of main casing 1, three are welded and fixed shaping, lubricating oil are filled with housing
4.Drive component includes stator 5 and rotor 6, and stator 5 is fixedly mounted in housing, and the center of stator 5 forms installation sky
Between, bent axle 7 is axially through installing space, and rotor 6 is arranged in installing space and is fixedly connected with bent axle 7, so that the energy of rotor 6
Enough band dynamic crankshafts 7 rotate.Compression assembly includes cylinder 8 and piston 9, and cylinder 8 and piston 9 are arranged on below drive component, cylinder 8
With compression chamber, bent axle 7 is axially through compression chamber, and piston 9 is arranged in compression chamber and is connected with bent axle 7, so that institute's piston 9
It can be moved under the drive of bent axle 7.Bearing assembly includes base bearing 10, supplementary bearing 11 and strengthens bearing 16, base bearing 10 and pair
Bearing 11 is set in the bottom of bent axle 7 and is located at the top and bottom of cylinder 8 respectively, and major and minor bearing 11 and main casing 1 and/
Or cylinder 8 is fixedly connected, strengthen the top that bearing 16 is arranged on drive component, strengthen bearing 16 and be set on the top of bent axle 7
And it is fixedly connected with main casing 1.
Further, cylinder 8 is provided with air admission hole, the slide plate 12 coordinated with piston 9 and acted on slide plate 12 and causes
Slide plate 12 is bonded the spring 13 of piston 9.Base bearing 10 is provided with the steam vent connected with compression chamber, is provided with and is used in steam vent
Control the exhaust valve plate 14 of steam vent opening and closing.The top of base bearing 10 is provided with muffler 15, the lumen side of muffler 15 and exhaust
Hole connects, and outside connects with the inner chamber of housing.During rotary compressor works, rotor 6 can be relative with dynamic crankshaft 7
Stator 5 and housing rotation, bent axle 7 drive piston 9 to move, slide plate 12 is in work under the support of base bearing 10 and reinforcement bearing 16
Plug 9 promotes lower motion, opens air admission hole, low-pressure gas is drawn into the compression chamber of cylinder 8 and is compressed.During exhaust, row
The motion of air valve plate 14 opens steam vent, and gases at high pressure are discharged in muffler 15 by steam vent, are then discharged in housing
Portion.
Wherein, as shown in figure 1, the cooperation diameter of axle D of bent axle 7 and base bearing 10, bent axle 7 and the cooperation width for strengthening bearing 16
B, meet relational expression：0.3≤B/D ＜ 0.75.
According to bearing theory, bearing width-diameter ratio is smaller, then the aligning performance of bearing is better, and frictional heat is easier is moistened
Lubricating oil 4 is taken away, and bearing temperature rise is smaller, and friction power loss is smaller.But bearing width-diameter ratio is smaller, the bearing capacity of bearing is smaller.By
Strengthen the assembly experiment of bearing 16 to find, as B/D ＜ 0.75, strengthen bearing 16 and the aligning of bent axle 7 is easy, avoid reinforcement bearing
16 with the EDGE CONTACT of bent axle 7.As shown in figure 4, found by performance test, as B/D >=0.3, compressor frictional resistance damage
Lose small, performance is higher.And as B/D ＜ 0.3, compressor performance drastically deteriorates, and occurs strengthening bearing 16 and the abrasion of bent axle 7 now
As the bearing capacity of bearing 16 deficiency is strengthened on surface.By compressor durability experiment, the utility model is found, as B/D >=0.3,
Function longtime running under heavy load operating mode is compressed, the bearing capacity of reinforcement bearing 16 is enough, and heat caused by bearing friction
Easily it is pulled away, lubricating status and cooling effect are good.For example, if discharge capacity is 32cm3Rotary compressor, bent axle with
The cooperation diameter of axle D=20mm of base bearing, bent axle and cooperation the width the B=6mm, (4.15MPa under heavy load operating mode for strengthening bearing
Pressure at expulsion, 1.2MPa pressures of inspiration(Pi)), compressor rotary speed 200Hz, continuous service is after 2000 hours, bent axle, base bearing and adds
Strong bearing is excellent.
In one embodiment of the present utility model, as shown in Fig. 2 bent axle 7 and the cooperation diameter of axle D1 for strengthening bearing 16 are small
When the cooperation diameter of axle D of bent axle 7 and base bearing 10,0.4≤B/D ＜ 0.75.
In this programme, to reduce the friction loss for strengthening bearing 16, the axle that bent axle 7 coordinates section with strengthening bearing 16 is reduced
Footpath, bent axle 7 is set to be less than D with strengthening the cooperation diameter of axle D1 of bearing 16, the bearing capacity for now strengthening bearing 16 has declined, therefore needs
Increase bent axle 7 and strengthen the cooperation width B of bearing 16, make 0.4≤B/D ＜ 0.75, to ensure the rigidity of bent axle 7 enough.
In any of the above-described technical scheme, it is preferable that reinforcement bearing 16 is sliding bearing.
In one embodiment of the present utility model, as shown in Fig. 2 the lateral wall for strengthening bearing 16 is fixed with housing and connected
Connect.
In this programme, strengthen 16 direct housing of bearing and be fixedly connected, the few cost of such deisgn product number of parts is low, specifically
Bearing 16 and housing are strengthened in ground can use the connected mode such as welding or riveting.
In one embodiment of the present utility model, as shown in figure 3, strengthen setting support 17 between bearing 16 and housing,
Support 17 is fixedly connected with the casing, and is strengthened bearing 16 and is fixedly connected by screw 18 with support 17.
This programme medium-height trestle 17 and housing are fixedly connected by the mode such as welding or riveting, and it is logical with support 17 to strengthen bearing 16
Cross screw 18 to connect, strengthen bearing 16 and be connected with the screw 18 of support 17 so as to strengthen bearing 16 adjustable in the horizontal direction, therefore
It is more easy to strengthen the aligning of bearing 16.
In any of the above-described technical scheme, rotary compressor is single cylinder rotary compressor or twin-tub rotation-type compressor
Or multi-cylinder rotary compressor.That is the compression assembly of rotary compressor can include one group of cylinder 8 and piston 9,
Two or more groups cylinder 8 and piston 9 can be included.
In any of the above-described technical scheme, rotary compressor is swing type or rolling-piston-type.
In description of the present utility model, the orientation or position relationship of the instruction such as term " on ", " under ", " top ", " bottom " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that combining specific features, structure, material or feature that the embodiment or example describe is contained in of the present utility model at least one
In individual embodiment or example.In this manual, identical embodiment is not necessarily referring to the schematic representation of above-mentioned term
Or example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example
In combine in an appropriate manner.
In description of the present utility model, term " connection ", " installation ", " fixation " etc. all should be interpreted broadly, for example,
" connection " can be fixedly connected or be detachably connected, or be integrally connected；Can be joined directly together, can also lead to
Intermediary is crossed to be indirectly connected.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (10)
1. a kind of rotary compressor, including：Housing and bent axle, compression assembly, bearing assembly in the housing, institute
The first end that compression assembly is stated with the bent axle is connected, and the bearing assembly includes base bearing, supplementary bearing and strengthens bearing, described
Base bearing and the supplementary bearing are set in the first end of the bent axle and are located at the top and bottom of the compression assembly respectively,
The reinforcement bearing holder (housing, cover) is located on the second end of the bent axle and is fixedly connected with the housing, it is characterised in that
The cooperation diameter of axle D of the bent axle and the base bearing, the cooperation width B of the bent axle and the reinforcement bearing, meets to close
It is formula：0.3≤B/D ＜ 0.75.
2. rotary compressor according to claim 1, it is characterised in that
When the cooperation diameter of axle D1 of the bent axle and the reinforcement bearing is less than the cooperation diameter of axle D of the bent axle and the base bearing,
0.4≤B/D ＜ 0.75.
3. rotary compressor according to claim 1, it is characterised in that
The compression assembly includes cylinder and piston, and the cylinder has compression chamber, and the bent axle is axially through the compression
Chamber, the piston are arranged in the compression chamber and are connected with the bent axle, so that institute's piston can be under bent axle drive
Motion.
4. rotary compressor according to claim 1, it is characterised in that also include：
Drive component, the drive component include stator and rotor, and the stator is fixedly mounted in the housing, and described fixed
The center of son forms installing space, and the bent axle is arranged on the peace axially through the installing space, the rotor
It is fixedly connected in dress space and with the bent axle, so that the rotor can drive the crank rotation.
5. rotary compressor according to claim 4, it is characterised in that
The both sides for strengthening bearing and the base bearing respectively on the drive component axial direction.
6. rotary compressor according to claim 1, it is characterised in that
Lubricating oil is filled with the housing.
7. rotary compressor according to claim 1, it is characterised in that
The reinforcement bearing is sliding bearing.
8. rotary compressor according to claim 1, it is characterised in that
The lateral wall for strengthening bearing is fixedly connected with the housing.
9. rotary compressor according to claim 1, it is characterised in that
Support is set between the reinforcement bearing and the housing, the support is fixedly connected with the housing, the reinforced shaft
Hold and be fixedly connected by screw with the support.
10. rotary compressor according to any one of claim 1 to 9, it is characterised in that
Rotary compressor is single cylinder rotary compressor or twin-tub rotation-type compressor or multi-cylinder rotary compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901857.XU CN207131584U (en) | 2017-07-21 | 2017-07-21 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901857.XU CN207131584U (en) | 2017-07-21 | 2017-07-21 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131584U true CN207131584U (en) | 2018-03-23 |
Family
ID=61639428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720901857.XU Active CN207131584U (en) | 2017-07-21 | 2017-07-21 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339237A (en) * | 2017-07-21 | 2017-11-10 | 广东美芝制冷设备有限公司 | Rotary compressor |
-
2017
- 2017-07-21 CN CN201720901857.XU patent/CN207131584U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339237A (en) * | 2017-07-21 | 2017-11-10 | 广东美芝制冷设备有限公司 | Rotary compressor |
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