CN102072135A - Combined bearing - Google Patents
Combined bearing Download PDFInfo
- Publication number
- CN102072135A CN102072135A CN2011100367074A CN201110036707A CN102072135A CN 102072135 A CN102072135 A CN 102072135A CN 2011100367074 A CN2011100367074 A CN 2011100367074A CN 201110036707 A CN201110036707 A CN 201110036707A CN 102072135 A CN102072135 A CN 102072135A
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- bearing
- bore
- connection frame
- link press
- press span
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Abstract
The invention provides a combined bearing, which solves the problem that a cylinder body still deforms to a certain extent by increasing the outer diameter of the bearing during welding and the problems of complicated assembly process and high cost due to rack connection between compressed parts and a shell. The invention has the key points that: the combined bearing consists of a cylindrical flange bearing main body and an annular connection frame with an L-shaped annular wall; the connection frame has a large upper bore and a small lower bore; and a flange disc of the bearing main body is fixed on the small bore of the connection frame by the bearing main body from the upside of the connection frame. The combined bearing has the advantages that: the deformation is generated on the connection frame during the welding, and the connection frame can absorb the deformation by the rational structure design and material selection, so the bearing is no longer deformed; and the production process has high applicability, so the performance of the whole machine is improved.
Description
Technical field
The present invention relates to the combination bearing that a kind of air conditioner uses with rotary compressor.
Background technique
Rotary compressor mainly comprises the closed shell parts, be fixed on driver part on the closed shell parts, by this driver part rotary driving and realize the compression member of compression function, compression member mainly comprises parts such as cylinder body, bent axle, bearing.Usually, compression member adopts cylinder body directly to weld stationary positioned with closed shell, but this mode makes the easily very big distortion of generation when welding of cylinder body, and is bigger to the performance impact of rotary compressor.In recent years, the general solution of this problem is had two kinds in the industry: a kind of is to adopt to increase bearing outside diameter, with bearing directly and closed shell weld stationary positioned.Another kind is to adopt frame to be connected between compression member and housing, and frame is as a part independently, and a side is connected on the cylinder body in the compression member with bolt, and opposite side and housing weld stationary positioned.
When all having reduced welding to a certain extent, these two kinds of methods, bigger shortcoming is arranged all separately still to the influence of block distortion.First method, because bearing is an integral body, rigidity is bigger, itself can produce bigger distortion inevitably when welding with housing, this distortion still can be directly delivered to cylinder body, to the certain influence of size generation of cylinder body.Simultaneously, the distortion of bearing itself can influence also that the size shape of exhaust gear changes on the bearing, makes the noise of discharging gas increase and is difficult to control.On the other hand, solid bearing need adopt the machining mode to make, and manufacturing efficiency is lower, and mass stability is relatively poor.Second method assembly technology complexity, cost is higher, less in industry use.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of combination bearing.
The object of the present invention is achieved like this: it is made up of cylinder flange type bearing main body and the L-shaped ring-type link press span of ring wall, this link press span forms upper big mouth footpath, lower small mouth footpath, and bearing main body is fixed on its flange plate (disc) above link press span on link press span small-bore.Combined bearing is assembled into compression member with parts such as cylinder body, bent axles again, and the stationary positioned mode of compression member and housing adopts link press span and the housing welding location in the combination bearing.
Compared with prior art, the invention has the beneficial effects as follows: carry out stationary positioned with closed shell indirectly by link during owing to combination bearing and housing welding, distortion occurred on the link press span when such structure made welding, can make it absorb this part distortion by appropriate design and rationally selecting for use of material to the link press span structure, no longer be delivered on the bearing, thermal distortion has very big benefit to the influence of bearing and cylinder body size to the Energy Efficiency Ratio that improves rotary compressor when having eliminated welding.Simultaneously, eliminate the distortion of bearing exhaust gear, helped controlling exhaust sound.And link press span directly contacts with housing, can be considered link press span and strengthened the intensity and the thickness of the housing of contact with it, the noise that produces in die cavity when this discharges gas to shielding between compression member and stator module has certain effect, and helps reducing the noise of rotary compressor.On the other hand, behind the use link press span, bearing can adopt the fabrication techniques of easy precise forming, and the middle compared to existing technology mode that adopts machining can be enhanced productivity the stability of ensuring the quality of products.
Description of drawings
Further specify the present invention below in conjunction with accompanying drawing.
The longitudinal sectional drawing of Fig. 1 rotary compressor.
The sectional drawing of the combination bearing of Fig. 2 pressure welding.
Fig. 3 adopts the sectional drawing of the combination bearing of interference fit.
Fig. 4 adopts the sectional drawing of bolted combination bearing.
Embodiment
Fig. 1 is rotary compressor 100 sectional drawings, mainly comprise closed shell 10, be fixed on driver part (comprising stator module 21, rotor assembly 22) on the closed shell parts, by this driver part rotary driving and realize the compression member of compression function, compression member mainly comprises eccentric crankshaft 40, cylinder body 50, cylinder 60, bearing (comprising upper bearing (metal) 71, lower bearing 72).Eccentric crankshaft 40 is connected with rotor assembly 22 in the driver part, drives cylinder 60 and rotates in cylinder body 50.Refrigeration agent enters cylinder body 50 and is compressed back exhaust gear discharge from bearing.
Referring to Fig. 2, upper bearing (metal) 71 in this rotary compressor 100 is a combination bearing, it is made up of cylinder flange type bearing main body 711 and the L-shaped ring-type link press span 712 of ring wall, this link press span forms upper big mouth footpath 7121, lower small mouth footpath, and bearing main body 711 is fixed on its flange plate 7111 above link press span on link press span small-bore.Means of fixation is flange plate and small-bore employing fixing structure, and is fixing in the cooperation place welding of the two.
Referring to Fig. 3, the mode that flange plate 7112 is fixed on link press span small-bore is that flange plate and lower small mouth directly adopt interference fit to fix.
Referring to Fig. 4, the mode that flange plate 7113 is fixed on link press span small-bore is, flange plate and small-bore employing fixing structure, and use bolt 7114 fixing in the cooperation place of the two.
During the processing combination bearing, these two-part are coupled together form a combination bearing integral body earlier, carry out necessary machining, be assembled into compression member with parts such as cylinder body 50, bent axle 40, cylinders 60 again.The mode that the welding stationary positioned of compression member and housing 10 adopts combination bearing 71 and housing welding to locate, during welding housing 10 directly and the link press span 712 on the combination bearing 71 weld, thermal distortion occurs on the link press span, link press span has bigger Young's modulus, can absorb this part distortion, thereby eliminate the influence of thermal distortion upper bearing (metal) main body and cylinder body.
Claims (4)
1. combination bearing, it is characterized in that: it is made up of cylinder flange type bearing main body and the L-shaped ring-type link press span of ring wall, this link press span forms upper big mouth footpath, lower small mouth footpath, and bearing main body is fixed on its flange plate above link press span on link press span small-bore.
2. according to the described a kind of combination bearing of claim 1, it is characterized in that: the mode that flange plate is fixed on link press span small-bore is flange plate and small-bore employing fixing structure, in the cooperation place welding of the two.
3. according to claim 1 combination bearing, it is characterized in that: the mode that flange plate is fixed on link press span small-bore is fixed for the two adopts interference fit.
4. according to the described combination bearing of claim 1, it is characterized in that: the mode that flange plate is fixed on link press span small-bore is flange plate and small-bore employing fixing structure, and uses bolt in the cooperation place of the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100367074A CN102072135A (en) | 2011-02-12 | 2011-02-12 | Combined bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100367074A CN102072135A (en) | 2011-02-12 | 2011-02-12 | Combined bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102072135A true CN102072135A (en) | 2011-05-25 |
Family
ID=44030829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100367074A Pending CN102072135A (en) | 2011-02-12 | 2011-02-12 | Combined bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102072135A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100341273B1 (en) * | 2000-05-26 | 2002-06-22 | 황기연 | structure for supporting pressure sharing plate in scroll-type compressor |
| CN201582035U (en) * | 2009-11-13 | 2010-09-15 | 天津市天发重型水电设备制造有限公司 | Improvement structure of guide bearing pressing plate of hydraulic generator set |
-
2011
- 2011-02-12 CN CN2011100367074A patent/CN102072135A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100341273B1 (en) * | 2000-05-26 | 2002-06-22 | 황기연 | structure for supporting pressure sharing plate in scroll-type compressor |
| CN201582035U (en) * | 2009-11-13 | 2010-09-15 | 天津市天发重型水电设备制造有限公司 | Improvement structure of guide bearing pressing plate of hydraulic generator set |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110525 |