CN101387284A - High-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor - Google Patents
High-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor Download PDFInfo
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- CN101387284A CN101387284A CNA2007100531937A CN200710053193A CN101387284A CN 101387284 A CN101387284 A CN 101387284A CN A2007100531937 A CNA2007100531937 A CN A2007100531937A CN 200710053193 A CN200710053193 A CN 200710053193A CN 101387284 A CN101387284 A CN 101387284A
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- ball bearing
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Abstract
The invention relates to a high-efficiency energy-saving small total enclosed refrigerating compressor, which is improvement of the prior small total enclosed refrigerating compressor. The improvement of the high-efficiency energy-saving small total enclosed refrigerating compressor is as follows: a radial ball bearing is arranged between a crankshaft and an outer bearing; or a radial ball bearing is arranged on the lower end of a bearing sleeve on the crankshaft and a cylinder pedestal or between the upper end and the lower end of the bearing sleeve. Due to adoption of the radial ball bearing on the crankshaft and replacement of the prior sliding friction means with the rolling friction means, the radial ball bearing is flexible in rolling; the friction coefficient is small; the transmission efficiency of the radial ball bearing is greatly improved; the input power of the compressor is correspondingly reduced by less than 50 percent; and the COP of the compressor is improved by more than 8 percent, so as to realize high efficiency and energy saving of the compressor.
Description
(1) technical field: the improvement technology that the present invention relates to hermetically sealed compressor.
(2) background technique: at present in the small-sized totally-enclosed refrigerating compressor manufacturing, friction mode is sliding friction pair between each kinematic pair of designed compressor arrangement, part between this kind structure motion pair is direct contact, its friction factor is big, will certainly cause energy consumption height, the vibrating noise of compressor big, power consumption is the important energy-saving index of examination compressor after all.At present, manufacturing is not only making great efforts to improve part processing precision and motor properties in order to reduce the input power of compressor, uses the bent axle of small axle diameter bent axle and single supporting structure to reduce friction with the method for the friction area of minimizing kinematic pair in design.Except that energy-conservation measures such as adopting conventional reduction power consumption improves, can not change the friction power loss that the friction mode between each kinematic pair is eliminated from the source, energy-conserving product becomes main flow and attraction on the market now, also is the trend of compressor industry development.At present, some compressor has used the plane thrust bearing in the shoulder of crank position, change compressor into the rolling friction mode in the axial sliding friction mode of bent axle, the startability of compressor is decreased, the consumed power of compressor also reduces to some extent simultaneously.But in actual application, the power consumption of compressor does not too significantly reduce.
(3) summary of the invention: purpose of the present invention is exactly the big problem of friction in pairs power consumption that will overcome on the existing hermetically sealed compressor bent axle, and a kind of high-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor is provided.
Concrete scheme of the present invention is: improve at existing small-sized totally-enclosed refrigerating compressor, it is characterized in that: between bent axle and external support radial ball bearing is housed; Between end or the upper and lower end radial ball bearing is housed under the bearing housing on bent axle and the cylinder block.
For guaranteeing the working stability of radial ball bearing, the present invention has a groove in the bottom, bearing housing lower end of cylinder block, and the built-in spring back-up ring is with the location radial ball bearing.
Bearing housing on the cylinder block among the present invention can be made an integral body with cylinder block; For the processing that makes things convenient for cylinder block and the assembling of radial ball bearing, bearing housing and cylinder block can also be separated making, adopt bolt to link into an integrated entity again.
After the present invention uses radial ball bearing, in the compressor operation process, bent axle is directly not contact with the hole, change present rolling friction mode into by original sliding friction, the friction factor of rolling bearing is little, its friction in pairs has reduced 7.9%-11.5% than the coefficient of sliding friction after using radial ball bearing, and its transmission efficiency improves greatly.The input power of compressor is corresponding to be reduced below 50%, and the COP of compressor improves more than 8%, thereby realizes the energy-efficient of compressor.The structure that this kind is equipped with rolling bearing not only can be used on the small-sized totally-enclosed Piston Refrigerant Compreessor, also can be used on other design of mini hermetically sealed compressors such as small-sized totally-enclosed refrigerating slip pipe formula.This kind high-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor should meet on the compressor that is useful in the following low back pressure operating mode (evaporating temperature is at-35 ℃～-15 ℃) of refrigerating capacity 200W.
(4) description of drawings:
Fig. 1 is the main sectional view of general structure of the present invention;
Fig. 2 is the structural representation that bearing housing of the present invention and cylinder block are assembled into one.
Among the figure: 1-stator, 2-external support, 3-radial ball bearing, 4-bent axle, 5-connecting rod, 6-piston, the 7-silencing cavity, 8-cylinder head, 9-housing, 10-rotor, 11-cylinder block, 12-bearing housing, 13,14-radial ball bearing, 15-bolt, 16-axle sleeve, 17-check ring, 18-bolt.
(5) embodiment:
Referring to Fig. 1, the present invention has the basic structure of common hermetically sealed compressor, mainly include housing 9, the motor of being made up of stator 1, rotor 10 is housed, the suction and discharge system in the housing 9, silencing cavity 7, piston 6, connecting rod 5, cylinder block 11, cylinder head 8, and the external support 2 and bent axle 4 compositions that are installed in the cylinder block that are contained in cylinder block top.Particularly in the present invention, relative prior art, between bent axle 4 and external support 2, installed radial ball bearing 3 additional, upper and lower two radial ball bearings 13,14 between the bearing housing of bent axle 4 and cylinder block 11, have been installed additional, and adopt axle sleeve 16 with the be placed in upper/lower terminal of bearing housing of two radial ball bearings 13,14, the lower end of bearing housing has groove, built-in spring back-up ring 17, with lower end, location radial ball bearing 14, promptly constitute the present invention.
The radial ball bearing in lower end also can only be installed between the bearing housing of bent axle 4 and cylinder block 11 among the present invention, and the upper end is plane bearing or bearing is not installed.
Be the processing that makes things convenient for cylinder block 11 and the assembling of radial ball bearing, the cylinder block 11 among the present invention can be designed as composite structure, and referring to Fig. 2, the bearing housing 12 that is about on the cylinder block separates making with cylinder block 11, adopts bolt 15,18 to fuse then.
Claims (3)
1. high-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor, mainly include housing, motor, suction and discharge system, silencing cavity, piston, connecting rod, cylinder block, cylinder head are housed in the housing and be contained in cylinder block top external support, be installed on the bent axle in the cylinder block, it is characterized in that: between bent axle and the external support radial ball bearing is housed; Between end or the upper and lower end radial ball bearing is housed under the bearing housing on bent axle and the cylinder block.
2. a kind of high-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor according to claim 1 is characterized in that: the bottom, bearing housing lower end at cylinder block has a groove, and the built-in spring back-up ring is with the location radial ball bearing.
3. a kind of high-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor according to claim 1 is characterized in that: the bearing housing on the cylinder block can be made an integral body with cylinder block, can also separately make, and adopts bolt to connect one again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100531937A CN101387284A (en) | 2007-09-12 | 2007-09-12 | High-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100531937A CN101387284A (en) | 2007-09-12 | 2007-09-12 | High-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101387284A true CN101387284A (en) | 2009-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100531937A Pending CN101387284A (en) | 2007-09-12 | 2007-09-12 | High-efficiency energy-conserving small-sized totally-enclosed refrigerating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101387284A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131960A (en) * | 2014-07-25 | 2014-11-05 | 浙江美亚特精密机械有限公司 | Piston driving mechanism for refrigeration compressor |
-
2007
- 2007-09-12 CN CNA2007100531937A patent/CN101387284A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131960A (en) * | 2014-07-25 | 2014-11-05 | 浙江美亚特精密机械有限公司 | Piston driving mechanism for refrigeration compressor |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090318 |