CN102116296A - Main shell structure of closed-type rotary compressor - Google Patents
Main shell structure of closed-type rotary compressor Download PDFInfo
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- CN102116296A CN102116296A CN2010100192855A CN201010019285A CN102116296A CN 102116296 A CN102116296 A CN 102116296A CN 2010100192855 A CN2010100192855 A CN 2010100192855A CN 201010019285 A CN201010019285 A CN 201010019285A CN 102116296 A CN102116296 A CN 102116296A
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- main casing
- main shell
- groove
- iron core
- rotary compressor
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Abstract
The invention relates to a main shell structure of a closed-type rotary compressor. The main shell structure provided by the invention comprises a stator iron core and at least one groove, wherein the stator iron core is sleeved in a main shell; the inner wall of the main shell positioned is provided with at least one groove within the range in which the stator iron core is sleeved; the grooves are arranged in the circumferantial direction along the inner wall of the main shell or arranged longitudinally along the axis of the main shell; the grooves are arranged longitudinally along the axis of the main shell and penetrates through the inner wall of the whole main shell; the grooves are arranged in the circumferential direction along the inner wall of the main shell continuously or discontinuously in a threaded shape; the depth of each groove is greater than or equal to three times of the magnitude of interference delt between the outer diameter of the stator iorn core and the inner diameter of the main shell; and the intervals among the grooves are greater than or equal to two times of the depth of each groove. The main shell structure of the closed-type rotary compressor provided by the invention has the characteristics of simple and resonable structure, low requirement on processing accuracy, high processing efficiency, good processing quality and wide applicable scope, and is not only suitable for the enclosed-type rotary compressor adopting carbon dioxide as a refrigerant, but also suitable for the enclosed-type rotary compressor adopting other refrigerants.
Description
Technical field
The present invention relates to the main casing structure of a kind of closed rotating compressor, particularly a kind of closed rotating compressor.
Background technique
The stator iron core in the closed rotary compressor and the assembling of main casing are by the hot jacket interference fit, and promptly before the assembling, the external diameter of stator iron core is bigger than the internal diameter of main casing, and after main casing was heated, its internal diameter expanded and becomes big, and greater than the stator iron core external diameter; Then stator iron core is injected in the main casing; Last main casing cooling, its internal diameter contraction diminishes and stator iron core is fixed in its inside.
General R22 or the R410A of adopting is as the about 3～4mm of the thickness of slab of the main casing of the rotary compressor of refrigeration agent.And as being high pressure in the main casing, exhaust pressure just, CO
2Rotary compressor, as shown in Figure 1, the working pressure in the main casing 3 of rotary compressor 1 can reach 9～12MPa.For the compressive strength of the main casing that guarantees this rotary compressor, its main casing need adopt thicker steel plate.Generally speaking, the thickness of slab of main casing need reach 7～9mm.Because CO
2The main casing thickness ratio R22 of rotary compressor or R410A rotary compressor much thick worked as CO
2Rotary compressor carries out the shrink-on timing of stator iron core 2 and main casing 3, if when the magnitude of interference value of the internal diameter of the external diameter of stator iron core 2 and main casing 3 and R22 or R410A rotary compressor are suitable, and after hot jacket is finished, CO
2Stress ratio R22 that the main casing of rotary compressor inwardly shrinks or R410A rotary compressor much bigger.At this moment, CO
2The stator iron core iron core of rotary compressor will deform, and it mainly shows the distortion of iron core internal diameter and the radial deformation of iron core, and this is that the compressor assembling time does not allow the situation sent.
In order to reduce the distortion of stator iron core, we can be CO
2The magnitude of interference value of the external diameter of the stator iron core of rotary compressor and the internal diameter of main casing is littler than R22 or R410A rotary compressor, the stator iron core distortion when preventing to assemble.Yet, will make CO like this
2Dimensional tolerance range between the external diameter of the stator iron core of rotary compressor and the internal diameter of main casing reduces greatly, i.e. Jia Gong required precision improves widely, therefore, is unfavorable for very much actual batch process.
Summary of the invention
Purpose of the present invention aims to provide a kind of main casing structure of simple and reasonable, requirement on machining accuracy is low, work efficiency is high, quality of processing is good, applied widely closed rotating compressor, to overcome deficiency of the prior art.
Press the main casing structure of a kind of closed rotating compressor of this purpose design, comprise the stator iron core that is sleeved in the main casing, it is characterized in that the inwall of main casing is provided with more than one groove in the scope that is positioned at the suit stator iron core at least.
Described groove is vertically arranged along the inwall circumferential arrangement of main casing or along the axis of main casing.
Described groove vertically arranges and runs through the inwall of whole main casing along the axis of main casing.
Described groove is the continuous or interrupted circumferential arrangement of shape of threads along the inwall of main casing.
Described groove is arranged in the form of a ring.
The degree of depth of described groove is more than or equal to three times of the magnitude of interference δ between the internal diameter of the external diameter of stator iron core and main casing.
The spacing of described groove is more than or equal to two times of the degree of depth of groove.
Described groove is more than two, and the width of any two grooves equates or be unequal that the spacing of any two grooves equates or be unequal.
The wall thickness of described main casing is more than or equal to 6mm.
Described closed rotating compressor is for adopting CO
2, R22 or R410A be as the closed rotary compressor of refrigeration agent.
The present invention is carrying out CO
2The stator iron core of rotary compressor and the timing of main casing shrink-on, though the value of the magnitude of interference δ between the internal diameter of the external diameter of stator iron core and main casing and R22 or R410A rotary compressor quite, after hot jacket is finished, CO
2Stress ratio R22 that the main casing of rotary compressor inwardly shrinks or R410A rotary compressor much bigger.
But, because CO
2Be processed with groove on the inwall of the main casing of rotary compressor, make that the area of contact of inwall of the outer wall of stator iron core and main casing is reduced, under the situation that confining force after can guaranteeing the assembling of stator iron core and main casing hot jacket meets the demands, guarantee that stator iron core can not glide in housing, make CO
2The stator iron core of rotary compressor and the timing of main casing shrink-on, the stressed of stator iron core reduced, so the amount of deformation of stator iron core is also reduced widely.And to the outer wall of stator iron core and the inwall of main casing, this inwall comprises the part that contacts with stator iron core at least, requirement on machining accuracy and R22 or R410A rotary compressor quite.
That the present invention has is simple and reasonable, requirement on machining accuracy is low, work efficiency is high, quality of processing is good, advantage of wide range of application, and it not only is applicable to and adopts CO
2As the closed rotating compressor of refrigeration agent, be suitable for too for the closed rotating compressor that adopts other refrigeration agent.
Description of drawings
Fig. 1 is existing CO
2The broken section structural representation of closed rotary compressor.
Fig. 2 is the broken section structural representation of first embodiment of the invention.
Fig. 3 is the sectional structure schematic representation of the main casing in the first embodiment of the invention.
Fig. 4 is the broken section structural representation of second embodiment of the invention.
Fig. 5 is the A place structure for amplifying schematic representation among Fig. 4.
Fig. 6 is the sectional structure schematic representation of the main casing in the second embodiment of the invention.
Fig. 7 is the sectional structure schematic representation of the main casing in the third embodiment of the invention.
Among the figure: 1 is compressor, and 2 is stator iron core, and 3 is main casing, and 3a is a groove, and t is the degree of depth of groove, and H is the wall thickness of main casing, and A is the width of groove, and B is the spacing of groove.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
First embodiment
Referring to Fig. 2-Fig. 3, the main casing structure of this closed rotating compressor, comprise the stator iron core 2 that is sleeved in the main casing 3, the inwall of main casing 3 is provided with more than one groove 3a in the scope that is positioned at suit stator iron core 2 at least, just on main casing 3 inwalls, prepare a section with the assembling of stator iron core 2 hot jackets, process groove 3a.The wall thickness H of main casing 3 is more than or equal to 6mm.Groove 3a is along the inwall circumferential arrangement of main casing 3.
Wherein, the degree of depth t of groove is more than or equal to three times of the magnitude of interference δ between the internal diameter of the external diameter of stator iron core 2 and main casing 3.The spacing B of groove 3a is more than or equal to two times of the degree of depth t of groove 3a.Groove 3a is more than two, and the width A of any two grooves equates or be unequal that the spacing B of any two grooves equates or be unequal.
Behind the hot jacket, 2 pairs of main casings 3 of stator iron core to the external carbuncle transmission of external diameter direction basically during thickness from the part of contact to 3 δ, the overwhelming majority that decayed, therefore the compressive strength to main casing 3 does not have harmful effect substantially; Moreover as long as the value of the degree of depth t of groove is not too big, the compressive strength of main casing 3 is the quite levels that can guarantee when not having internal diameter groove 3a structure.
Second embodiment
Referring to Fig. 4-Fig. 6, the inwall of main casing 3 is provided with more than one groove 3a in the scope that is positioned at suit stator iron core 2, and groove 3a vertically arranges along the axis of main casing 3.
All the other are not stated part and see first embodiment, no longer repeat.
The 3rd embodiment
Referring to Fig. 7, groove 3a vertically arranges and runs through the inwall of whole main casing along the axis of main casing 3.
All the other are not stated part and see second embodiment, no longer repeat.
Claims (10)
1. the main casing structure of a closed rotating compressor comprises the stator iron core (2) that is sleeved in the main casing (3), it is characterized in that the inwall of main casing is provided with more than one groove (3a) in the scope that is positioned at the suit stator iron core at least.
2. the main casing structure of closed rotating compressor according to claim 1 is characterized in that described groove (3a) vertically arranges along the inwall circumferential arrangement of main casing (3) or along the axis of main casing.
3. the main casing structure of closed rotating compressor according to claim 2 is characterized in that described groove (3a) vertically arranges and run through the inwall of whole main casing along the axis of main casing (3).
4. the main casing structure of closed rotating compressor according to claim 2 is characterized in that described groove (3a) is the continuous or interrupted circumferential arrangement of shape of threads along the inwall of main casing (3).
5. the main casing structure of closed rotating compressor according to claim 2 is characterized in that described groove (3a) arranges in the form of a ring.
6. according to the main casing structure of the described closed rotating compressor of the arbitrary claim of claim 1 to 5, the degree of depth (t) that it is characterized in that described groove (3a) is more than or equal to three times of the magnitude of interference δ between the internal diameter of the external diameter of stator iron core (2) and main casing (3).
7. the main casing structure of closed rotating compressor according to claim 6, the spacing (B) that it is characterized in that described groove (3a) is more than or equal to two times of the degree of depth (t) of groove.
8. the main casing structure of closed rotating compressor according to claim 7 is characterized in that described groove (3a) is more than two, and the width of any two grooves (A) equates or be unequal that the spacing of any two grooves (B) equates or be unequal.
9. the main casing structure of closed rotating compressor according to claim 1, the wall thickness (H) that it is characterized in that described main casing (3) is more than or equal to 6mm.
10. the main casing structure of closed rotating compressor according to claim 1 is characterized in that described closed rotating compressor is for adopting CO
2, R22 or R410A be as the closed rotary compressor of refrigeration agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100192855A CN102116296A (en) | 2010-01-05 | 2010-01-05 | Main shell structure of closed-type rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100192855A CN102116296A (en) | 2010-01-05 | 2010-01-05 | Main shell structure of closed-type rotary compressor |
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| Publication Number | Publication Date |
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| CN102116296A true CN102116296A (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100192855A Pending CN102116296A (en) | 2010-01-05 | 2010-01-05 | Main shell structure of closed-type rotary compressor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050078845A (en) * | 2004-02-03 | 2005-08-08 | 캐리어 주식회사 | Moter structure of rotary compressor |
| US20080044273A1 (en) * | 2006-08-15 | 2008-02-21 | Syed Arif Khalid | Turbomachine with reduced leakage penalties in pressure change and efficiency |
| CN101162019A (en) * | 2006-10-10 | 2008-04-16 | 乐金电子(天津)电器有限公司 | Wave-shaped structural compressor casing and processing method thereof |
| CN101398003A (en) * | 2007-09-30 | 2009-04-01 | 乐金电子(天津)电器有限公司 | Fixed structure of compressor housing and engine |
-
2010
- 2010-01-05 CN CN2010100192855A patent/CN102116296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050078845A (en) * | 2004-02-03 | 2005-08-08 | 캐리어 주식회사 | Moter structure of rotary compressor |
| US20080044273A1 (en) * | 2006-08-15 | 2008-02-21 | Syed Arif Khalid | Turbomachine with reduced leakage penalties in pressure change and efficiency |
| CN101162019A (en) * | 2006-10-10 | 2008-04-16 | 乐金电子(天津)电器有限公司 | Wave-shaped structural compressor casing and processing method thereof |
| CN101398003A (en) * | 2007-09-30 | 2009-04-01 | 乐金电子(天津)电器有限公司 | Fixed structure of compressor housing and engine |
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Application publication date: 20110706 |