Unlock instant, AI-driven research and patent intelligence for your innovation.
hermetic compressor
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A closed compressor, compression mechanism technology, applied in the direction of rotary piston machinery, mechanical equipment, engine components, etc., can solve problems such as increase and friction loss.
Active Publication Date: 2011-11-30
LG ELECTRONICS INC
View PDF5 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] In this way, if a bearing supporting the rotating shaft is added, the contact area between the bearing and the rotating shaft increases, and this increased contact area also causes an increase in friction loss
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
example 1
[0063] Example 1) In the case of C1 / C2=0.55
[0064] When C1 / C2 is set to 0.55, the lubrication state of the upper bearing 500 is detected, an example of the state is as follows:
[0070] In the above conditions, the Sommerfeld number (S0) is calculated as follows:
[0071] S0=(R / C) 2 ·ηN / P=1.710
[0072] Using the Soxhlet number (S0) obtained as described above, the eccentricity of the crankshaft in the upper bearing at the time of rotation is obtained by the following equation:
[0073] lnX=C 0 +C 1 S0+C 2 S02+C 3 S03+C 4 S04
[0074] here
[0075] C 0 =-6.733511e-2+5.953856e-2*(L / D)-7.877801e-3*(L / D) 2
[0076] C 1 =0.0173906-4.3371078*(L / D)-0.41195896*(L / D) 2
[0077] C 2 =2.0091537+0.5112015*(L / D)+4.083148*(L / D) 2
[...
example 2
[0084] Example 2) C1 / C2 = 11.5
[0085] For another example, if C1 / C2 is set to 11.5, based on the above formula, the Soxhlet number (S 0 ) was 0.039, and the eccentricity (X) was calculated to be 0.958. In this case, the minimum oil film thickness (h m ) is calculated to be 0.0047mm.
[0086] In this case, the Soxhlet number is relatively small, but the minimum oil film thickness is 4.7 μm, so a sufficient oil film can be formed between the crankshaft and the bearing. Therefore, even if a load is applied to the shaft, the shaft can be supported by the oil film, and thus the shaft and the bearing do not come into contact with each other. In other words, in this case, it can be seen that the compressor falls into the fully lubricated region.
[0087] on the other hand, Figure 4 is a graph showing changes in input work (compression work) based on the value of C1 / C2. As shown in the figure, when the value of C1 / C2 is less than 1 or greater than 11.5, it can be seen that the ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
Disclosed herein is a hermetic compressor including a hermetic container; a rotation drive unit provided at an inner portion of the hermetic container; a rotation shaft combined with the rotation drive unit; a compressor mechanism combined with the rotation shaft to inhale and compress refrigerant; a first bearing fixed to the compressor mechanism to support the rotation shaft; and a second bearing fixed to the hermetic compressor to support an end portion located apart from the first bearing on the rotation shaft, wherein a tolerance (C1) between the second bearing and rotation shaft is 0.55-11.5 times greater than a tolerance (C2) between the first bearing and rotation shaft. The invention also provides a hermetic compressor capable of minimizing friction loss.
Description
technical field [0001] The present invention relates to a hermetic compressor, more particularly, to a hermetic compressor in which bearings are provided at both upper and lower ends of a crankshaft. Background technique [0002] In general, a hermetic compressor is provided with a driving motor that generates a driving force in an inner space of a hermetic container, and a compression mechanism that operates in combination with the driving motor to compress refrigerant. In addition, hermetic compressors may be classified into reciprocating compressors, scroll compressors, vibration compressors, and the like. The compression method of the reciprocating compressor and the scroll compressor utilizes the rotational force of the drive motor, while the compression method of the vibratory compressor utilizes the reciprocating motion of the drive motor. [0003] In the hermetic compressor described above, a driving motor of the hermetic compressor using a rotational force is provi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More