CN1769672A - Hermetic compressor - Google Patents
Hermetic compressor Download PDFInfo
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- CN1769672A CN1769672A CN 200410072656 CN200410072656A CN1769672A CN 1769672 A CN1769672 A CN 1769672A CN 200410072656 CN200410072656 CN 200410072656 CN 200410072656 A CN200410072656 A CN 200410072656A CN 1769672 A CN1769672 A CN 1769672A
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Abstract
The invention discloses a closed-style compressor, which comprises the following parts: specific shaped piston 30, cylinder 20, compression chamber 22, guiding face 33, drainage hole 25 and bulk space 36, wherein the guiding face 33 is formed around the outer column face of piston and composed of piston length direction symmetrically, which slides in the cylinder 20 and compression chamber 22 within the more than 40 deg arc scale of piston length direction central axle; the bulk space 36 engages the drainage hole 25 of working fluid from compression chamber 22 in front of piston projection part, whose front displays flush conical shape deflecting from the length direction center of piston 30. The invention can improve the compressor working efficiency.
Description
Technical field
The present invention relates to closed-type compressor, more detail is about piston and carry out in the straight line back and forth movement process, the invention of the closed-type compressor that working fluid is compressed in the pressing chamber inside of cylinder.
Background technique
In Fig. 1, illustrate the structure of the closed-type compressor of prior art with sectional drawing.
At first, seal container 1 is made of upper container 1t and bottom container 1b, and forms confined space in inside.Seal container 1 inside is provided with framework 2.The bottom of framework 2 has stator 3 being fixed, and stator 3 is supported on seal container 1 inside by spring 2S.Rotor 4 is designed to connect the central authorities of stator 3, and is rotated according to electromagnetic action with stator 3.Rotor 4 is connected as a single entity with the bent axle 5 that connects framework 2 central positions and is rotated.
The lower end of above-mentioned bent axle 5 has the oil pump equipment 5d that oily L is upwards taken out by the inside of bent axle.Depart from pivot pin 5b by oil pump equipment 5d kerosene L through what kerosene conduit 5a was splashed to that the rotating center that departs from bent axle 5 forms.The opposite direction that departs from pivot pin 5b is being provided with bent axle 5 forms one will depart from the balance 5c that pivot pin 5b causes the center of gravity deflection to proofread and correct.
On the other hand, the pivot pin 5b that departs from of above-mentioned bent axle 5 links to each other with an end of piston rod 8.The other end of piston rod 8 is connected with piston 7, makes the rotation motion of bent axle 5 be transformed to the straight line back and forth movement of piston 7.Piston 7 carries out straight line motion in the pressing chamber 6 ' inside of the cylinder 6 that is arranged on framework 2, and compression working fluid.Pressing chamber 6 ' the front end of said cylinder 6 is made of assembled valve 9 and head-shield 10.
At this, analyze the structure of assembled valve 9 with reference to figure 2.Be provided with valve groove 9p in the assembled valve 9.Connecting the inlet hole 9s that is compressed chamber 6 ' suction working fluid passage among the valve groove 9p and from the tap hole 9e of pressing chamber 6 ' working fluid discharge route.And the both sides of valve groove 9p, in order to be used for opening and closing inlet hole 9s and tap hole 9e separately, be provided with inhaling valve 9sv and discharge valve 9ev.
Absorbing silencer 11 (with reference to Fig. 1) is set in the middle of the above-mentioned head-shield 10, is fed to pressing chamber after the noise minimizing with working fluid.Working fluid, the suction lead 12 that is provided with by perforation seal container 1 is fed to absorbing silencer 11.Drawing symbol 13 is to discharge conduit, it play with in pressing chamber 6 ' inside after overcompression, the working fluid of discharge is to the outside effect of supplying of compressor.
Piston 7 is accepted the rotating force of the bent axle 5 that is sent to by piston rod 8 in the compressor of this kind structure, and carry out the straight line back and forth movement in pressing chamber 6 ' inside, after will compressing by the working fluid that inlet hole 9s is drawn into pressing chamber 6 ' inside, discharge by above-mentioned tap hole 9e.
But in the closed-type compressor of prior art as mentioned above, there are the following problems: above-mentioned piston 7 carries out the straight line back and forth movement fast in pressing chamber 6 ' inside.Therefore, pressing chamber 6 ' inwall and the periphery of piston 7 is whole rubs mutually, this kind friction increases the input power of compressor, the problem that the compressor luminous efficiency is descended.
And above-mentioned piston 7 is during to greatest extent near assembled valve 9, i.e. volume that is formed by the front end and the remaining space between the valve groove 9p of piston 7 at peak and the volume part addition of tap hole 9e becomes dead volume (Dead volume).Piston 7 is when peak, and inlet hole 9s can not form dead volume because of inhaling valve 9sv closes.This kind dead volume is the reason that reduces compressor efficiency, it should be minimized.
Summary of the invention
In order to overcome the above problems, purpose of the present invention is: the piston of closed-type compressor and the friction area between the pressing chamber inwall are minimized.
Another object of the present invention is in closed-type compressor, and the dead volume that forms during with the piston peak minimizes.
The present invention is to have following structure to achieve these goals: this closed-type compressor is that the piston that is arranged in the pressing chamber of seal container inner casing carries out straight line back and forth movement process, the invention of the working fluid of heat of compression exchange cycles.The piston of given shape; Be formed at around the outer cylinder of above-mentioned piston, with the symmetrical formation of the length direction of piston, and with the length direction central shaft of piston be the center at least each greater than in 40 ° the orthodrome scope, with the pressing chamber inwall of cylinder slide to guide face; In the front end projection of above-mentioned piston, and its front end presents the cone shape that is scabbled shape, is positioned at the position that the length direction central shaft with piston departs from, and the volume space that coincide with the tap hole selectivity of discharging working fluid from pressing chamber.
Other features of the present invention are: this closed-type compressor is that the piston that is arranged in the pressing chamber of seal container inner casing carries out straight line back and forth movement process, the invention of the working fluid of heat of compression exchange cycles.The piston of given shape; Be formed at around the outer cylinder of above-mentioned piston, with the symmetrical formation of the length direction of piston, with the pressing chamber inwall of said cylinder slide to guide face; Front end projection at above-mentioned piston, and its front end presents the cone shape that is scabbled shape, be positioned at the position that the length direction central shaft with piston departs from, D: d=1.2-1.4: 1.0,0.3 (D is a maximum diameter in＜h/d＜0.5 herein, d is minimum value footpath, and h is the value of height) (referring to Fig. 6), and the volume space that coincide with the tap hole selectivity of discharging working fluid from pressing chamber.
The tap hole that is provided with in the above-mentioned volume space is positioned on the valve groove, forms from the ingress to outlet port one line, so can keep the area of the end that flows.
The edge designs of above-mentioned tap hole entrance and exit is circular.
Above-mentioned volume space height h be designed to from the inlet of tap hole to the identical length of outlet distance.
The Front-end Design of above-mentioned piston becomes with the radius of the length direction central shaft of piston places outer cylinder the formation specific amplitude with above-mentioned to the same formation of guide face airtight.
Except above-mentioned piston outer cylinder to guide face and airtight, recessed relatively formation contact slot to avoid.
The surface of above-mentioned contact slot to avoid along the length direction central shaft of piston with same curvature formative radius.
The surface of above-mentioned contact slot to avoid is that benchmark forms oval-shaped radius of curvature with the length direction central shaft of piston.
Closed-type compressor of the present invention with said structure because the straight line back and forth movement of piston is more prone to and stable, and can minimize dead volume, has the benefit that can increase work efficiency.
Advantage and good effect: as top explanation, the face that the inwall of piston and pressing chamber can be slided in closed-type compressor of the present invention minimizes, and the power that the obstruction piston is moved diminishes, thereby the input power of compressor is minimized.Thus, can obtain the effect that compressor operating efficient improves.Moreover, among the present invention as mentioned above the slip surface of pressing chamber and piston reduce, but also can fully keep the stability of the straight line back and forth movement of piston, also can guarantee the work reliability of compressor.
And, the front end of piston is provided with volume space among the present invention, piston can be minimized dead volume when peak, and the shape of volume space is rendered as the cone shape that is scabbled, and its size is carried out particular design, make flowing to of tap hole internal work fluid that volume space stops smooth and easy, also can expect to improve the efficient of compressor.
Description of drawings
Fig. 1 is the internal structure sectional view of general closed-type compressor.
Fig. 2 is the sectional view of intermediate portion of the closed-type compressor of prior art.
Fig. 3 is a closed-type compressor embodiment's of the present invention intermediate portion sectional view.
Fig. 4 is the piston structure oblique drawing of the embodiment of the invention.
Fig. 5 is the piston structure sectional drawing of embodiments of the invention.
The sectional view of Fig. 6 for concerning between the volume space of the embodiment of the invention and the tap hole.
Fig. 7 is the sectional drawing of other embodiment's of the present invention piston structure.
The symbol description of accompanying drawing major component
20: cylinder 22: pressing chamber
24: valve groove 25: tap hole
26: inhaling valve 27: discharge valve
28: head-shield 29: discharge the chamber
30: piston 32: airtight
33: to guide face 34: the contact slot to avoid
36: volume space 38: junction chamber
39: pin hole 40: piston rod
Embodiment
Describe the embodiment of closed-type compressor of the present invention in detail below with reference to accompanying drawing.
The intermediate portion sectional view that has shown the embodiment of closed-type compressor of the present invention among Fig. 3; Shown the piston structure oblique drawing that constitutes the embodiment of the invention among Fig. 4; Reflection constitutes the sectional drawing of the structure of piston of embodiments of the invention among Fig. 5; The sectional view that concerns between the volume space of the demonstration embodiment of the invention and the tap hole among Fig. 6.
According to above-mentioned each figure, the inner framework that is provided with of seal container is equipped with cylinder 20.Connect before and after the inside of cylinder 20 and form pressing chamber 22.In order to block a side of pressing chamber 22, the front end of cylinder 20 is provided with valve groove 24.
Be provided with inhaling valve 26 between the front end of above-mentioned valve groove 24 and cylinder 20.Need packing ring (not shown) in order to seal between inhaling valve 26 and the valve groove 24.Illustrated under the deleted state of inhaling valve 26 part in Fig. 3.
Inhaling valve 26 opposite location at valve groove 24 are provided with discharge valve 27.Discharge valve 27 optionally opens and closes tap hole 25, the discharge chamber 29 that will illustrate below being discharged to the compression working fluid of limit compression chamber 22.
So the head-shield 28 on the valve groove 24 covers discharge valve 27 and formed discharge chamber 29 between valve groove 24 and head-shield 28.Discharging chamber 29 is the interim places that stop of working fluid of discharging from pressing chamber 22 compressions.
The inside of above-mentioned pressing chamber 22 is provided with stator and the rotor that piston 30. pistons 30 are subjected to being arranged on framework and moves because of the crankshaft rotating power that the electro permanent magnetic effect is rotated.Above-mentioned piston 30 carries out in the straight line two-way process working fluid being compressed in pressing chamber 22 inside.
Above-mentioned piston 30 is by the cylinder morphosis with special diameter.The front end of piston 30 has airtight 32 that covers outer cylinder.(referring to Fig. 4) airtight 32 is the faces that slide with above-mentioned pressing chamber 22 inner faces.At airtight 32 seal ring is set according to design, in case stopping leak leaks.
The outer cylinder of above-mentioned piston 30 forms very long to guide face 33 along its length.Link to each other with above-mentioned airtight 32 to guide face 33 1 ends, the other end extends to the rear end of piston 30.To guide face 33 equally also is the face that slides with pressing chamber 22 inner faces.Therefore, above-mentioned airtight 32 with identical apart from the distance of piston 30 central shafts to guide face 33.
Above-mentioned to be positioned at length direction central shaft (with reference to figure 5) with piston 30 to guide face 33 be the center, and each is greater than in 40 ° the bigger circular arc scope at least.So is being for piston 30 carries out the straight line back and forth movement at the internal stability of pressing chamber 22, and is guaranteeing slide area forming spaces to guide face 33.Outer cylinder symmetry to guide face 33 and piston 30 is configured as good.
On the other hand, contact slot to avoid 34 except airtight 32 with forming in the outer cylinder of piston 30 to the remainder of guide face 33.Contact slot to avoid 34 forms the spill states relatively, does not slide with the inwall of pressing chamber 22 when piston 30 motions.So the length direction central shaft (o) along piston 30 forms the form with same radius of curvature to contact slot to avoid 34 on its surface.
The length direction central shaft (o) of the front end edge piston 30 of above-mentioned piston 30 forms outstanding volume space 36 in off-centered position.The front-end face of volume space 36 presents the cone shape that is scabbled shape.
Above-mentioned volume space 36 minimizes the dead volume of tap hole 25 inside of valve groove 24 when piston 30 has arrived peak.The D of volume space 36: d=1.2-1.4: 1.0,0.3＜h/d＜0.5 (D is a maximum diameter herein, and d is a minimum diameter, and h refers to height) is design condition.Present the cone shape that is scabbled according to this design condition front-end face.
At this moment, form remaining space (c) between the front end of piston 30 and the valve groove 24, near the bottom of above-mentioned volume space 36 and between the inlet aspect of tap hole 25, the interval between the outlet of the front end of volume space 36 and tap hole 25 also has same sample value with remaining space (c) in addition.Therefore, the height of above-mentioned volume space 36 is designed to and the inlet of the tap hole 25 identical length of distance till the outlet.
On the other hand, piston 30 section openings form junction chamber 38 in the inside of piston 30.Above-mentioned junction chamber 38 is to connect piston rod 40 parts.Drawing symbol 39 is pin holes, is in order to connect the position that above-mentioned piston 30 and piston rod 40 insert the piston pin.
Fig. 7 shows other embodiments of the present invention in addition.In the examples of implementation of this figure, at the connection contact slot to avoid 34 surface line ovalizes of the recessed formation of outer cylinder of piston 30.Among Fig. 7 the surface of contact slot to avoid 34 with to guide face 33 adjacent part step-down gradually, descriscent guide face 33 is far away more to become dark more.Among Fig. 7 for Fig. 5 in embodiment compare the surperficial with dashed lines that contacts slot to avoid 34 that illustrated embodiment among Fig. 5 represented.
Below the effect of closed-type compressor of the present invention with said structure is described in detail.(referring to Fig. 3)
In the above-mentioned pressing chamber 22, owing to after piston 30 moves, make pressing chamber 22 pressure inside descend downwards, working fluid is inhaled into by inlet hole.After piston 30 moved downwards, beginning was promptly moved to peak to moving in the other direction, and then the working fluid of pressing chamber 22 inside will be compressed.
And, moving at piston 30 in the middle of the process of peak, the working fluid of pressing chamber 22 inside compresses, and piston 30 peaks as shown in Figure 6, and then volume space 36 will be positioned at above-mentioned tap hole 25.
At this moment, same value is kept in the interval between above-mentioned piston 30 and the valve groove 24 except the bottom of tap hole 25.And, the level that the ingress edge of above-mentioned tap hole 25 forms, above-mentioned volume space 36 is paused in tap hole 25, and that the flow direction of working fluid of moment carries out is smooth and easy.
Also have, above-mentioned tap hole 25 broadens gradually toward the inflow path that forms between above-mentioned volume space 36 in bottom and the valve groove 24 more, and the flow direction that working fluid is discharged from tap hole 25 smooth and easy while that becomes can reduce the pulsation and the noise of compressed working fluid.
Above-mentioned piston 30 is when peak, take place to flow for the working fluid that makes tap hole 25 inside as mentioned above, the maximum diameter that the diameter of tap hole 25 is designed to volume space 36 adds 2 times of maximal clearance, the outside of past more tap hole 25 is walked, can be designed to following relation D: d=1.2-1.4: 1.0,0.3＜h/d for making the end area that flows become big volume space 36.
On the other hand, the outer cylinder of above-mentioned piston 30 and airtight 32 and slide to the inwall of guide face 33 with pressing chamber 22, but the part that above-mentioned contact slot to avoid 34 forms is not like this.The area that the result slides piston 30 and pressing chamber 22 inwalls minimizes, and the frictional force that makes overslaugh piston 30 move becomes minimum.This kind structure can reduce relatively for driven plunger 30 necessary input powers.
At this moment, extend to the rear end from the front end of piston 30 symmetrically to the outer cylinder of guide face 33 and above-mentioned piston 30, so piston 30 can normally move in pressing chamber 22.And to the length direction central shaft O of guide face 33 with piston 30, (with reference to figure 5) for being centered close to separately in the circular arc scope than 40 ° big, making can stable coming in and going out according to above-mentioned piston 30 to guide face 33.When in fact the amplitude that forms to guide face 33 is less than 40 °, change as piston 30 travel directions, piston 30 rear ends may touch contact slot to avoid 34.
And, can prevent ideally in Fig. 7 illustrated embodiment that the contact slot to avoid 34 of piston 30 from contacting with pressing chamber 22 inwalls.This is owing to will contact and contact the big partial design of possibility with pressing chamber 22 inwalls in the slot to avoid 34 and become the degree of depth darker, and relative shallow with partial design adjacent to guide face 33 and that can not contact with pressing chamber 22 inwalls.Thus, do not change the intensity of piston 30 or the reliability that eigentone also can provide product relatively.
Power of the present invention is not limited to above-mentioned example, and is content-defined according to what put down in writing in the claim scope, has the personnel of general knowledge in field of the present invention, can carry out various distortion and improvement is self-explantory in the claim scope.
For example: when the line that connects above-mentioned contact slot to avoid surface forms ellipse, with above-mentioned to discontinuous the fractureing of the adjacent part of guide face, promptly with the shape that can be designed to form suddenly groove to the guide face adjacent portion.
Claims (9)
1. a closed-type compressor is that the piston that is arranged in seal container inner casing pressing chamber carries out straight line back and forth movement process, and the invention of the working fluid of heat of compression exchange cycles is characterized in that: the piston of given shape; Be formed at around the outer cylinder of above-mentioned piston, with the symmetrical formation of the length direction of piston, and with the length direction central shaft of piston be the center at least each greater than in 40 ° the orthodrome scope, with the pressing chamber inwall of said cylinder slide to guide face; Be positioned at the position that the length direction central shaft with piston departs from, in the front end projection of above-mentioned piston, and its front end presents the cone shape that is scabbled shape, and constitutes with volume space that the tap hole selectivity of discharging working fluid from pressing chamber is coincide.
2. a closed-type compressor is that the piston that is arranged in seal container inner casing pressing chamber carries out straight line back and forth movement process, and the invention of the working fluid of heat of compression exchange cycles is characterized in that: the piston of given shape; Be formed at around the outer cylinder of above-mentioned piston, with the symmetrical formation of the length direction of piston, with the pressing chamber inwall of said cylinder slide to guide face; Be positioned at the position that the length direction central shaft with piston departs from, front end projection at above-mentioned piston, and its front end presents the cone shape that is scabbled shape, its maximum directly through the D/ minimum directly through d=1.2-1.4/1.0,0.3＜height h/ minimum directly constitutes through d＜0.5 and with volume space that the tap hole selectivity of discharging working fluid from pressing chamber is coincide.
3. according to claim 1 or the described closed-type compressor of claim 2, it is characterized in that: the tap hole that is provided with in the above-mentioned volume space is positioned on the valve groove, forms from the ingress to the outlet port straight line, so can keep the area of the end that flows.
4. closed-type compressor according to claim 3 is characterized in that: the edge designs of above-mentioned tap hole entrance and exit is for circular.
5. closed-type compressor according to claim 4 is characterized in that: above-mentioned volume space height h be designed to from the inlet of tap hole to the identical length of outlet distance.
6. according to claim 1 or the described closed-type compressor of claim 2, it is characterized in that: the front end of piston is identical with the guide radius surface to the radius of the length direction central shaft of piston, and piston outer shaft sealing surface forms with certain thickness.
7. closed-type compressor according to claim 6 is characterized in that: except above-mentioned piston outer cylinder to guide face and airtight, and recessed relatively formation contact slot to avoid.
8. closed-type compressor according to claim 7 is characterized in that: the surface of above-mentioned contact slot to avoid is shaped with same radius of curvature along the length direction central shaft of piston.
9. closed-type compressor according to claim 7 is characterized in that: the surface of above-mentioned contact slot to avoid is that benchmark forms oval-shaped radius of curvature with the length direction central shaft of piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072656 CN1769672B (en) | 2004-11-05 | 2004-11-05 | Hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072656 CN1769672B (en) | 2004-11-05 | 2004-11-05 | Hermetic compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1769672A true CN1769672A (en) | 2006-05-10 |
| CN1769672B CN1769672B (en) | 2010-07-14 |
Family
ID=36751163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410072656 Expired - Fee Related CN1769672B (en) | 2004-11-05 | 2004-11-05 | Hermetic compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1769672B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922439A (en) * | 2009-06-12 | 2010-12-22 | 松下电器产业株式会社 | Hermetic type compressor and refrigeration plant |
| CN101931619A (en) * | 2009-06-19 | 2010-12-29 | 阿瓦雅公司 | Insertable contact resolution |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6540492B2 (en) * | 2001-04-09 | 2003-04-01 | Carrier Corporation | Compressor piston with reduced discharge clearance |
| CN2619069Y (en) * | 2003-04-30 | 2004-06-02 | 黄石东贝电器股份有限公司 | Non-cylindral piston for piston compressor |
-
2004
- 2004-11-05 CN CN 200410072656 patent/CN1769672B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922439A (en) * | 2009-06-12 | 2010-12-22 | 松下电器产业株式会社 | Hermetic type compressor and refrigeration plant |
| US8435017B2 (en) | 2009-06-12 | 2013-05-07 | Panasonic Corporation | Hermetic compressor and refrigeration system |
| CN101931619A (en) * | 2009-06-19 | 2010-12-29 | 阿瓦雅公司 | Insertable contact resolution |
| CN101931619B (en) * | 2009-06-19 | 2015-01-28 | 阿瓦雅公司 | Pluggable contact resolution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1769672B (en) | 2010-07-14 |
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| ASS | Succession or assignment of patent right |
Owner name: TAIZHOU LG ELECTRONICS FREEZER CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS ( TIANJIN ) ELECTRICAL APPLIANCES CO., LTD. Effective date: 20091225 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20091225 Address after: No. 2 Yingbin Road, Taizhou Economic Development Zone, Jiangsu Province, China: 225300 Applicant after: Taizhou LG Electronics Refrigerator Co., Ltd. Address before: Beichen District, Tianjin Xing Dian Highway Code: 300402 Applicant before: Lejin Electronic and Electric Appliance Co., Ltd. (Tianjin) |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20111105 |