CN100370137C - Connecting rod fixing device for hermetic compressor - Google Patents
Connecting rod fixing device for hermetic compressor Download PDFInfo
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- CN100370137C CN100370137C CNB031480187A CN03148018A CN100370137C CN 100370137 C CN100370137 C CN 100370137C CN B031480187 A CNB031480187 A CN B031480187A CN 03148018 A CN03148018 A CN 03148018A CN 100370137 C CN100370137 C CN 100370137C
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- connecting rod
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- piston
- fixing device
- crankshaft
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Abstract
The present invention relates to a connecting rod fixing device for a sealed compressor. In the fixing device of the present invention, a connecting rod is connected between a crank shaft and a piston, and the centrifugal fin of the crank shaft is connected with the connecting rod through big end diameter; the small end diameter of the connecting rod is connected with the piston through a piston pin; the connecting rod is inserted into the connecting chamber of the piston, and is connected to the piston by the piston pin. The height of the small end diameter of the connecting rod is lower than that of the connecting chamber of the piston, and a brake is arranged in a space of the height difference so as to avoid the phenomenon that the connecting rod rises and falls when starting. In the fixing device of the present invention, the distance between the upper end of a compressor frame supporting the crank shaft and the connecting rod is minimum, and therefore, the moment acting on the crank shaft is minimum so that the performance and the reliability of the compressor are improved.
Description
Technical field
The present invention relates to a kind of hermetic type compressor, particularly relate to a kind of connecting rod fixing device of hermetic type compressor of the straight reciprocating motion that rotatablely moving of its crankshaft is converted to piston.
Background technique
Fig. 1 is the internal structure generalized section according to the common compressor of prior art.As shown in the figure, above-mentioned existing common compressor, it mainly comprises following structure member:
By the seal container 1 that upper container 1t and bottom container 1b constitute, this seal container 1 inside is provided with frame 2, is fixed with stator 3 on the frame 2, and utilizes spring 2S that frame 2 is supported in the seal container 1.
In the upper end of crankshaft 5, be provided with the centrifugal fin 5b that departs from crankshaft 5 rotating centers; Opposite side at centrifugal fin 5b is provided with statocone 5c; In the lower end of crankshaft 5,, the lubricant oil L that will be positioned at bottom container 1b bottom is provided with propeller cavitation 5d for sucking by the oil groove 5a that is arranged on crankshaft 5.
The cylinder 6 that is built-in with pressing chamber 6 ' is arranged on the frame 2; In pressing chamber 6 ', be provided with by the centrifugal fin 5b of crankshaft 5 and the piston 7 that is connected with connecting rod 8;
As shown in Figure 2, the big end footpath 8a of centrifugal fin 5b and connecting rod 8 links together, and the top end diameter 8b of piston 7 and connecting rod 8 links together with wrist pin 7 '; Be provided with sleeve S L between big end footpath 8a and the centrifugal fin 5b; Sleeve S L is inserted in the 8a of Yu Daduan footpath, and starts with connecting rod 8 one.
At the front end of cylinder 6, be formed with and control the valve member 9 that flows into or flow out the condensing agent of pressing chamber 6 '; As shown in the drawing, 10 is top cover, and 11 is absorbing silencer, and 12 for reaching condensing agent the suction pipe of seal container 1 inside, 13 discharge pipes for compressor outside that compressed condensing agent is spued.
Consult Fig. 2 and Fig. 4 the annexation of connecting rod 8 and the piston 7 and the crankshaft 5 of above-mentioned prior art is described.
As shown in Figure 2, under the situation of each assembly partition, at first the top end diameter 8b of connecting rod 8 is inserted into the inside of piston 7, and connects piston 7 and top end diameter 8b with wrist pin 7 '; In addition piston 7 is inserted into the pressing chamber 6 ' of cylinder 6.At this moment, as shown in Figure 3, be arranged to make big end footpath 8a to be in the state that stands vertically in piston 7 and connecting rod 8;
In addition,, connecting rod 8 and piston 7 are rotated to the direction of arrow as shown in Figure 3, make big end footpath 8a cover be inserted into centrifugal fin 5b for the centrifugal fin 5b that makes crankshaft 5 is positioned at suitable position.And between centrifugal fin 5b and big end footpath 8a, be provided with sleeve S L, thereby finish the assembling of connecting rod.
But there are the following problems to have the fixing device of the as above prior art connecting rod of structure.
Along with the top end diameter 8b of connecting rod 8 is connected on the piston 7, be that the center rotates with piston 7, big end footpath 8a also is rotated thereupon, and it is inserted on the centrifugal fin 5b.But piston 7 is inserted in the pressing chamber 6 ' and can not moves about, and as shown in Figure 4, top end diameter 8b can not move relative to wrist pin 7 ' yet, therefore to hold footpath 8a rotation greatly in order realizing, and to be hung on the centrifugal fin 5b, will set the rotating locus of big end footpath 8a exactly.
In addition, because of the top end diameter 8b of connecting rod 8 in the inside of piston 7, the leeway that can move along with wrist pin 7 ' not, therefore the distance H from the upper end of the frame 2 that supports crankshaft 5 to connecting rod 8 will relatively increase.
Above-mentioned distance H increases, and the pressure that acts on the running fluid of piston 7 adds to the moment that crankshaft 5 produces by connecting rod 8 and can increase, thus the performance and the reliability of reduction compressor.
This shows that the connecting rod of existing hermetic type compressor still has many defectives, and demands urgently further being improved.
In order to solve the problem that above-mentioned hermetic type compressor connecting rod exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that the connecting rod fixing device of existing hermetic type compressor exists, the inventor is based on being engaged in this type of product specification manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, connecting rod fixing device in the hope of the hermetic type compressor of founding a kind of new structure, can improve the general connecting rod fixture structure of the hermetic type compressor of existing routine on the market, make it have more practicability.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcome the defective of the connecting rod fixing device existence of existing hermetic type compressor, and a kind of connecting rod fixing device of hermetic type compressor of new structure, technical problem underlying to be solved are provided is to make it improve the performance and the reliability of compressor.
Purpose of the present invention and solve its technical problem underlying and realize by the following technical solutions.The connecting rod fixing device of the hermetic type compressor that proposes according to the present invention, it is made up of following structure:
Crankshaft, it is supported by frame, is formed with centrifugal fin on the position of its rotating center departing from, and can rotates;
Piston is subjected to the drive that rotatablely moves of above-mentioned crankshaft, and carries out straight reciprocating motion, and portion is provided with junction chamber to above-mentioned centrifugal fin direction opening within it;
The rotation that links together of connecting rod, the centrifugal fin of its big end footpath and above-mentioned crankshaft, its other end is connected the junction chamber inside of above-mentioned piston, and rotates because of wrist pin; And its top end diameter is arranged on the position that it highly is lower than the height of above-mentioned junction chamber, and is connected on the piston by wrist pin, can rotate;
Lining is inserted between the centrifugal fin of above-mentioned connecting rod and crankshaft, and connecting crank axle and connecting rod;
The connecting rod fixing device of hermetic type compressor also comprises break, prevents that above-mentioned connecting rod from moving up and down to the direction of centrifugal fin and wrist pin in the inside of above-mentioned junction chamber.
The object of the invention to solve the technical problems can also adopt following technical measures further to realize.
The connecting rod fixing device of aforesaid hermetic type compressor, wherein said break is fixed on the upper end of above-mentioned wrist pin in above-mentioned junction chamber inside, and the top end diameter of controlling above-mentioned connecting rod moves along with wrist pin.
The connecting rod fixing device of aforesaid hermetic type compressor, wherein said break are the annular shape of a side opening.
The connecting rod fixing device of aforesaid hermetic type compressor, wherein said break are arranged on the above-mentioned centrifugal fin, and move along with centrifugal fin in the big end footpath of controlling above-mentioned connecting rod.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technological scheme as can be known, in order to minimize the distance between connecting rod and the frame, the top end diameter height of connecting rod is designed to height less than the junction chamber of piston, and in order to prevent moving about of operating connecting rod, thereby break used; According to fixing device of the present invention, make the frame upper end of support crankshaft and the distance between the connecting rod become minimum, the moment that thereupon acts on crankshaft is also for minimum, thus the performance and the reliability of raising compressor; In addition, in assembling,, thereby the assembling at the position, big end footpath of the connecting rod on the centrifugal fin that is connected crankshaft is more prone to because of the junction chamber inside connecting rod at piston has mobile leeway.
In sum, the connecting rod fixing device of the hermetic type compressor of special construction of the present invention, have above-mentioned many advantages and use value, and in like product, do not see have similar structural design to publish or use, no matter and its structurally or bigger improvement is all arranged on the function, have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thus be suitable for practicality more, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the internal structure sectional drawing of common hermetic type compressor;
Fig. 2 is the decomposing schematic representation according to the connecting rod fixing device of the hermetic type compressor of prior art;
Fig. 3 is the sectional drawing according to the connecting rod fixing device of the hermetic type compressor of prior art;
Fig. 4 is the constitutional diagram according to the linkage structure of the connecting rod of prior art and crankshaft;
Fig. 5 is sectional drawing according to one embodiment of present invention;
Fig. 6 is for constituting the break planimetric map of one embodiment of the present of invention;
Fig. 7 is for constituting the sectional drawing of an alternative embodiment of the invention.
Number in the figure
30, frame 32, crankshaft
34, centrifugal fin 36, statocone
38, cylinder 40, pressing chamber
42, piston 43, junction chamber
43 ', piston pin hole 46, connecting rod
47, big footpath 48, the top end diameter held
50, lining 52, wrist pin
54,54 ', break
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, its embodiment of connecting rod fixing device, structure, feature and the effect thereof of the hermetic type compressor that foundation the present invention is proposed, describe in detail as after.
Fig. 5 is the sectional drawing according to an embodiment of the connecting rod fixing device of hermetic type compressor of the present invention.As shown in the figure, crankshaft 32 is supported by frame 30, and can together rotate with rotor; The upper end of crankshaft 32 is provided with centrifugal fin 34; Centrifugal fin 34 is arranged on the position of the rotating center that departs from crankshaft 32; And, statocone 36 is arranged on the crankshaft 32 in order to eliminate the rotation imbalance problem that causes crankshaft 32 because of centrifugal fin 34.
One side of frame 30 is provided with vapour 38; And the inside of cylinder 38 is provided with pressing chamber 40; Be provided with piston 42 in the pressing chamber 40, and this piston 42 can carry out straight reciprocating motion; The inside of piston 42 is formed with junction chamber 43, and this junction chamber 43 is to the rear of piston 42 opening; The junction chamber 43 that connects piston 42 is provided with piston pin hole 43 '.
Connecting rod 46 connecting crank axles 32 and pistons 42, and rotatablely moving of crankshaft 32 is converted to the straight reciprocating motion of piston 42.The big end footpath 47 of connecting rod 46 is connected with the centrifugal fin 34 of above-mentioned crankshaft 32, hold greatly directly 47 and centrifugal fin 34 between be inserted with lining 50.And be positioned at big end footpath 47 reciprocal top end diameters 48, then be connected with piston 42 with wrist pin 52.
The height of top end diameter 48 will be lower than the height of junction chamber 43, the height of top end diameter 48 is designed to below 90% of height of junction chamber 43, this be for connecting rod 46 with after crankshaft 32 and piston 42 are connected, top end diameter 48 is descended along with wrist pin 52.
The wrist pin 52 that is right against the upper end of top end diameter 48 is provided with break 54.Above-mentioned break 54 has been filled up the space between top end diameter 48 upper ends and junction chamber 43 end faces, thereby prevents top end diameter 48 random liftings.As shown in Figure 6, break 54 is the annular shape of a side opening, and the wide cut of its open part is less than the diameter of wrist pin 52.
Fig. 7 is for constituting the sectional drawing of an alternative embodiment of the invention.As shown in the figure, for prevent connecting rod 46 when the compressor operating upwards the direction to centrifugal fin 34 rise, so employing break 54 '; The laterally inserted outer circumferential face of break 54 ' to above-mentioned centrifugal fin 34, make its with the big end of connecting rod 46 directly 47 upper end or therewith the upper end of the lining 50 of one contact; In order to insert break 54 ', be formed with groove on the centrifugal fin 34; Break 54 ' can be set to rod shape.
Below describe effect in detail according to the connecting rod fixed structure of hermetic type compressor of the present invention with said structure.
Connecting rod 46 is connected between crankshaft 32 and the piston 42.When utilizing lining 50 to connect, at first to connect piston 42 and connecting rod 46.That is, in junction chamber 43, insert the top end diameter 48 of stating connecting rod 46, and by above-mentioned piston pin hole 43 ' insertion wrist pin 52, thereby the top end diameter 48 and piston 42 of connection connecting rod 46.
Afterwards, the piston 42 that is connected with connecting rod 46 is inserted in the pressing chamber 40 of cylinder 38.At the piston 42 that the inside of pressing chamber 40 is being connected with connecting rod 46, be arranged to make the big end footpath 47 of connecting rod 46 to be in the state that stands vertically in the upper end of above-mentioned frame 30.
Under this state, the centrifugal fin 34 of above-mentioned crankshaft 32 is arranged on big end footpath 47 adjoining positions with above-mentioned connecting rod 46, thereby big end footpath 47 is revolved when turning 90 degrees, will be suspended.And the big end footpath 47 of the bar 46 that is rotatably connected is so that be hung on the centrifugal fin 34.
Because of the height of top end diameter 48 is below 90% of junction chamber 43 height of piston 42, so connecting rod 46 is moved to the bottom of wrist pin 52 and centrifugal fin 34, that is, connecting rod 46 is relatively approaching with the upper end of frame 30.
That is to say that the upper end of the frame 30 of support crankshaft 32 and the distance H between the connecting rod 46 relatively diminish.And, if the distance H between the upper end of frame 30 and the connecting rod 46 diminishes,, the pressure that adds to piston 42 will relatively reduce because of acting on the moment that crankshaft 32 produces crankshaft 32 by connecting rod 46.
In order to prevent that connecting rod 46 is along with wrist pin 52 or centrifugal fin 34 and oscilaltion is inserted into break 54 on the above-mentioned wrist pin 52.At this moment, the space of break 54 between the end face of top end diameter 48 upper ends of connecting rod 46 and junction chamber 43, thus prevent the lifting of connecting rod 46.
In addition,,, break 54 ' is arranged on the centrifugal fin 34 in order to prevent the lifting of connecting rod 46 according to another example of the present invention, thus the height in the big end footpath 47 of restriction connecting rod 46.
The technological innovation of the connecting rod fixing device of the hermetic type compressor of the present invention that above-mentioned structure like this constitutes all has many saving graces for technician of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, but every technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (4)
1. the connecting rod fixing device of a hermetic type compressor, it is made up of following structure: crankshaft, it is supported by frame, is formed with centrifugal fin on the position of its rotating center departing from, and can rotates; Piston is subjected to the drive that rotatablely moves of above-mentioned crankshaft, and carries out straight reciprocating motion, and portion is provided with junction chamber to above-mentioned centrifugal fin direction opening within it; The rotation that links together of connecting rod, the centrifugal fin of its big end footpath and above-mentioned crankshaft, its other end is connected the junction chamber inside of above-mentioned piston, and rotates because of wrist pin; And its top end diameter is arranged on the position that it highly is lower than the height of above-mentioned junction chamber, and is connected on the piston by wrist pin, can rotate; Lining is inserted between the centrifugal fin of above-mentioned connecting rod and crankshaft, and connecting crank axle and connecting rod; The connecting rod fixing device that it is characterized in that this hermetic type compressor also comprises:
Break prevents that above-mentioned connecting rod from moving up and down to the direction of centrifugal fin and wrist pin in the inside of above-mentioned junction chamber.
2. the connecting rod fixing device of hermetic type compressor according to claim 1, it is characterized in that wherein said break is fixed on the upper end of above-mentioned wrist pin in above-mentioned junction chamber inside, and the top end diameter of controlling above-mentioned connecting rod moves along with wrist pin.
3. the connecting rod fixing device of hermetic type compressor according to claim 2 is characterized in that wherein said break is the annular shape of a side opening.
4. the connecting rod fixing device of hermetic type compressor according to claim 1 is characterized in that wherein said break is arranged on the above-mentioned centrifugal fin, and move along with centrifugal fin in the big end footpath of controlling above-mentioned connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031480187A CN100370137C (en) | 2003-06-26 | 2003-06-26 | Connecting rod fixing device for hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031480187A CN100370137C (en) | 2003-06-26 | 2003-06-26 | Connecting rod fixing device for hermetic compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1566666A CN1566666A (en) | 2005-01-19 |
| CN100370137C true CN100370137C (en) | 2008-02-20 |
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ID=34472153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031480187A Expired - Fee Related CN100370137C (en) | 2003-06-26 | 2003-06-26 | Connecting rod fixing device for hermetic compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100370137C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008025323B4 (en) | 2008-05-27 | 2010-06-17 | Danfoss A/S | Refrigerant compressor |
| CN102062074A (en) * | 2009-11-15 | 2011-05-18 | 谈宇 | Novel transmission energy-saving compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178140A (en) * | 1976-03-09 | 1979-12-11 | Danfoss A/S | Compressor with reciprocating piston particularly for small refrigerators |
| CN1013397B (en) * | 1987-09-09 | 1991-07-31 | 罗伯特-博希股份公司 | Stop sleeve for shaft |
| DE19630943A1 (en) * | 1995-07-31 | 1997-02-06 | Samsung Electronics Co Ltd | Cylinder device for a piston compressor |
| US5918531A (en) * | 1996-11-08 | 1999-07-06 | Samsung Electronics Co., Ltd. | Connecting rod and piston coupling structure of compressor |
| US20020000160A1 (en) * | 1996-11-26 | 2002-01-03 | Yasuhiko Tanaka | Reciprocating compressor |
-
2003
- 2003-06-26 CN CNB031480187A patent/CN100370137C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178140A (en) * | 1976-03-09 | 1979-12-11 | Danfoss A/S | Compressor with reciprocating piston particularly for small refrigerators |
| CN1013397B (en) * | 1987-09-09 | 1991-07-31 | 罗伯特-博希股份公司 | Stop sleeve for shaft |
| DE19630943A1 (en) * | 1995-07-31 | 1997-02-06 | Samsung Electronics Co Ltd | Cylinder device for a piston compressor |
| US5918531A (en) * | 1996-11-08 | 1999-07-06 | Samsung Electronics Co., Ltd. | Connecting rod and piston coupling structure of compressor |
| US20020000160A1 (en) * | 1996-11-26 | 2002-01-03 | Yasuhiko Tanaka | Reciprocating compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1566666A (en) | 2005-01-19 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Taizhou LG Electronics Refrigerator Co., Ltd. Assignor: LG Electronic (Tianjin) Electrical Appliance Co., Ltd. Contract fulfillment period: 2008.4.30 to 2017.12.29 contract change Contract record no.: 2008320000754 Denomination of invention: Connecting rod fixing device for hermetic compressor Granted publication date: 20080220 License type: Exclusive license Record date: 20081010 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.30 TO 2017.12.29; CHANGE OF CONTRACT Name of requester: TAIZHOU LG ELECTRONICS FREEZER CO., LTD. Effective date: 20081010 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 |