CN100523509C - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
- Publication number
- CN100523509C CN100523509C CNB2005101369086A CN200510136908A CN100523509C CN 100523509 C CN100523509 C CN 100523509C CN B2005101369086 A CNB2005101369086 A CN B2005101369086A CN 200510136908 A CN200510136908 A CN 200510136908A CN 100523509 C CN100523509 C CN 100523509C
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- China
- Prior art keywords
- mentioned
- key element
- high pressure
- compression
- stator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000006835 compression Effects 0.000 claims abstract description 46
- 238000007906 compression Methods 0.000 claims abstract description 46
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The invention provides a rotary two-stage compressor, having: a motor having a stator with an iron core part and copper wires, and a rotor; a rotary shaft driven by the motor and having two eccentric parts; a rotary compression element wherein a low pressure compression element and a high pressure compression element with rollers provided in compression chambers respectively and put in revolving motion by the eccentric rotation of the eccentric parts are provided through an intermediate partition plate; and intermediate passages connected to the compression chamber of the low pressure compression element and the compression chamber of the high pressure compression element and separated from the internal space of the sealed container. In this case, the stator has cutout passages of an outer peripheral part and air holes of the core part, and the passage cross-sectional area (a) which is the space cross-sectional area of the motor, to the inside cross-sectional area A of the sealed container (a/A) is 0.09 or more. The invention can the oil consumption of the rotary two-stage compressor whose internal pressure is high pressure.
Description
Technical field
The present invention relates to be used in the rotary compressor of air conditioner with freeze cycle.
Background technique
In the past, as rotary 2 stage compressors that are used in freeze cycle, commonly for example opened disclosed content in clear 60-No. 128990 communiques (following patent documentation 1) the spy.Compressor in the prior art in the inside of seal container, has the motor of being made up of stator and rotor on top.The running shaft that connects motor has 2 eccentric parts.As the compressing mechanism of corresponding these eccentric parts,, establish high pressure successively with compressing key element and low pressure with compressing key element from motor side in seal container inside.
Each compresses key element makes rotor make revolution motion by the rotation of the off-centre of rotating shaft eccentric portion.180 ° of these eccentric part phase phase differences, each phase difference that compresses the compression section of key element is 180 °, that is, the compression section of 2 compression key elements is an antiphase.
Gas refrigerant as the action fluid is inhaled into low pressure with in the compression key element with low pressure Ps, presses Pm in the middle of compression rises to.The gas refrigerant of pressing Pm to discharge with the centre is discharged to via intermedia.Then, the gas refrigerant of the middle Pm of pressure is inhaled into high pressure with compressing in the key element through via intermedia, is compressed to high pressure P d.
The gas refrigerant of the high pressure P d that discharges from compressor by condenser condenses after, by the expansion mechanism low pressure Ps that reduces pressure.Afterwards, become gas refrigerant, be inhaled into low pressure by evaporator evaporation with in the compression key element.
As the structure of rotary 2 stage compressors that press to high pressure P d in such seal container, disclosed structure in the common for example patent documentation 1.Rotary 2 stage compressors of prior art are pressed Pm, are therefrom pressed Pm to be compressed to high pressure P d compressed gas refrigerant so interimly at high pressure in the compression key element in the middle of low pressure is compressed to from low pressure Ps in the compression key element.
In existing rotary 2 stage compressors, identical with the single-stage rotary compressor, the refrigerator oil of enclosing the bottom, inner space carries out lift by the fuel feeding path that is located at interior of rotating shaft, gives pressing chamber by the pressure reduction fuel feeding in internal pressure and the pressing chamber.
Patent documentation 1: the spy opens clear 60-No. 128990 communiques (the 5th page of the 1st figure).
In described rotary 2 stage compressors of prior art, different with existing single-stage rotary compressor, gas refrigerant flows through each pressing chamber successively.Therefore, even identical circulating mass of refrigerant, in rotary 2 stage compressors the time of refrigeration agent fuel feeding also elongated, increase the amount of bleeding of refrigerator oil easily.To discharge the sealing part that contact between the materials such as space and via intermedia etc. seals many for reason in compressor, so compare the easier refrigerator oil that bleeds with the single-stage rotary compressor.Therefore, the oil content of the gas refrigerant of being discharged by discharge tube has appearred than existing higher this problem.At this, oil content is to use refrigerator oil and gas refrigerant are added in the value that together mass flow rate is removed the mass flow rate of refrigerator oil.
The oil content reduction method of existing single-stage rotary compressor is the method that fully reduces the flow velocity of the gas refrigerant in the motor, promotes the oil separation at the inlet of the upstream side that arrives discharge tube.In general single-stage rotary compressor, take: be attached to space between the internal diameter of the external diameter of rotor and stator, at the outer circumferential side of stator the wind hole be located at notch part and iron core portion, to guarantee the method for the long-pending a of passage sections.Yet in rotary 2 stage compressors of seal space high pressure P d, the relation between the long-pending and oil content of passage sections is indeterminate, has this class body of confined space difficult design.
Summary of the invention
The present invention is directed to above-mentioned problem, its purpose is, is made as appropriate value by passage sections is amassed, and reduces oil content.
In order to achieve the above object, a kind of rotary 2 stage compressors of the present invention comprise: rotation compression key element, and it has in seal container: motor, have stator (7) and rotor roughly cylindraceous (8), this stator has iron core portion roughly cylindraceous made of iron and copper cash; Running shaft has by these electric motor driven 2 eccentric parts; And roller (11a, 11b), it uses compression key element (20a) and high pressure to be provided with by intervention intermediate clapboard (15) with compression key element (20b) in low pressure, this low pressure is used each pressing chamber (23a of compression key element (20b) with compression key element (20a) and high pressure, 23b), carry out revolution motion by the off-centre rotation of above-mentioned eccentric part, via intermedia (30), it is communicated with the suction port (25b) that above-mentioned low pressure is used the pressing chamber (23b) of compression key element (20b) with the exhaust port (26c) and the above-mentioned high pressure in the discharge space (33) of the pressing chamber (23a) of compression key element (20a); With with above-mentioned seal container in the above-mentioned high pressure that is communicated with the exhaust port (26b) of compression key element (20b), pressure in the above-mentioned seal container is the pressure of using the discharge gas after the compression in the compression key element (20b) at above-mentioned high pressure, and described rotary 2 stage compressors are characterised in that: have on the peripheral part of said stator (7): notch part (59); The wind hole (54) of above-mentioned iron core portion; Be formed on the air clearance between the internal diameter of the external diameter of rotor (8) and stator (7); And the groove clearance portion between above-mentioned copper cash, the long-pending summation of each passage sections of above-mentioned air clearance, above-mentioned groove clearance portion, above-mentioned wind hole (54) and above-mentioned notch part (59) is that the area between the sectional area A of inboard of long-pending a of passage sections and described seal container is more than 0.09 than (a/A).
The present invention can reduce the oil content of pressing in the seal container to rotary 2 stage compressors of high pressure.
Description of drawings:
Fig. 1 is the sectional view of rotary 2 stage compressors of expression one embodiment of the present invention.
Fig. 2 is the sectional view of the motor of expression one embodiment of the present invention.
Fig. 3 is the figure of the relation of expression ratio (a/A) and specific oil consumption.
Symbol description:
1-compressor, 7-stator, 8-rotor, 12-lid, 13-seal container,
14-motor, 27-discharge tube, 48-refrigerator oil, 59-notch part, 54-wind hole.
Embodiment
Utilization illustrates embodiments of the present invention.Figure 1 illustrates the longitudinal section of rotary 2 stage compressors 1 of present embodiment.Compressor 1 has: the seal container of being made up of bottom 21 and cap 12 and main body portion 22 13.Above seal container 13 inside, the motor 14 with stator 7 and rotor 8 is set.The running shaft 2 that is connected in motor 14 has 2 eccentric parts 5, is bearing on main bearing 9 and the supplementary bearing 19a by axle.To should running shaft 2, stack gradually from motor 14 sides: main bearing 9, high pressure with the 9a of end plate portion with compressing key element 20a and having the 19b of end plate portion and the intermediate receptacle 19 of supplementary bearing 19a, carry out integrated with connection key elements such as bolt 36 with compression key element 20b, intermediate clapboard 15, low pressure.
The 9a of end plate portion is fixed by the inwall that is welded in main body portion 22, and supporting spindle holds 9.The 19b of end plate portion is supported on the supplementary bearing 19a.And in the present embodiment, with connecting key element 36 fixed end board 19b, also can weld and be fixed to main body portion 22.
Each compresses key element 20a and 20b, constitutes as Fig. 1.Low pressure is with compression key element 20a, constitutes pressing chamber 23a by 19b of end plate portion and cylindric cylindrical body 10a and the cylindric roller 11a and the intermediate clapboard 15 that are embedded in eccentric part 5a periphery.In addition, high pressure is with compression key element 20b, constitutes pressing chamber 23b by main bearing 9 and cylindric cylindrical body 10b and the cylindric roller 11b and the intermediate clapboard 15 that are embedded in eccentric part 5b periphery.These pressing chambers 23a, 23b, planar impeller (not shown) by the such active force additional means of connecting coil spring, contact is placed with the outer of roller 11a, 11b of the eccentric motion rotation of eccentric part 5a, 5b, do the advance and retreat motion simultaneously, pressing chamber 23a, 23b are divided into compression volume and suck the space.
Compression key element 20 rotates driven roller 11 by the off-centre of eccentric part 5.As shown in Figure 1, eccentric part 5a and eccentric part 5b 180 ° of phase differences mutually, the phase difference of the compression section of compression key element 20a, 20b is 180 °, that is, the compression sections of 2 compression key elements are antiphase.
Represent to move the flowing of gas refrigerant of fluid with the arrow of Fig. 1.The gas refrigerant of the low pressure Ps that supplies with by pipe arrangement 31 is drawn into low pressure with in the compression key element 20a by the suction port 25a that is connected with pipe arrangement 31, pressure Pm in the middle of being compressed to by the eccentric rotation of roller 11a.If the pressure one in the pressing chamber 23a becomes predefined pressure, the expulsion valve 28a of opening just presses the Pm opening with the centre, presses the gas refrigerant of Pm to be discharged to the discharge space 33 that is communicated with exhaust port 26a in the middle of then becoming.This discharges space 33, is to isolate the space of the confined space 29 in the seal container 13 by intermediate receptacle 19 peaceful plate-like cover 35, presses Pm in the middle of this internal pressure becomes substantially.Via intermedia 30 is to be communicated with from discharging the exhaust port 26c in space 33 and the path of suction port 25b.The gas refrigerant of the pressure P m that discharges by the exhaust port 26a of expulsion valve 28a opening, be discharged to discharge space 33 after, by via intermedia 30, to the suction port 25b that is communicated with the 23b of pressure chamber that compresses key element 20b with high pressure.
Thereafter, by via intermedia 30, be drawn into high pressure with the gas refrigerant of pressing Pm in the middle of in the compression key element 20b by suction port 25b, the revolution by roller 11 is compressed to high pressure P d.If the pressure one in the pressing chamber 23b becomes predefined pressure, the expulsion valve 28b of opening is just with high pressure P d opening.Gas refrigerant is discharged to confined space 29 as the inner space of seal container 13 from exhaust port 26b.Be discharged to the gas refrigerant of the high pressure P d of this confined space 29, discharge by discharge tube 27 by motor 14.
At this, in the refrigeration agent of high pressure P d, dissolve in refrigerator oil 48.Refrigerator oil 48 is enclosed the bottom of seal container 13.Refrigerator oil 48 flows down from the discoideus oil supply parts 51 that have central hole, the oil supply path 53 that is located at running shaft 2 inside, by each pressing chamber 23 that bleeds of the pressure reduction between high pressure P d and each pressing chamber 23.
Like this, the slip surface of refrigerator oil 48 end face by roller 11 and not shown impeller in each compression key element 20 etc. flow into pressing chamber 23 and join with gas refrigerant.
Secondly, Fig. 2 shows the B-B section of the motor 14 of present embodiment shown in Figure 1.Rotor 8 is fixed by being pressed into running shaft 2 or hot charging.Stator 7 is fixed at main body portion 22 by hot charging.The air clearance of regulation is set at the internal diameter of the external diameter of rotor 8 and stator 7.
Copper cash portion, notch part 59 and wind hole 54 are that 6 equivalent arrangements are at Zhou Fangxiang basically.Wind hole 54 is located at 59 of adjacent notch part 59 and notch parts.Space, notch part 59 and wind hole 54 are in the scope that motor efficiency is reduced.
The long-pending a of passage sections this moment is the summation in each cross section of air clearance, groove clearance portion, wind hole 54, notch part 59.Beyond the long-pending a of passage sections, the size of rotary compressor 1 integral body is also relevant with oil content.Therefore, will the results are shown in Fig. 3 about the arrangement of the ratio (a/A) of the area A of long-pending a of passage sections and main body portion 22 inboards and oil content.
According to Fig. 3, ratio (a/A) is big more, and oil content is low more.If ratio (a/A) is big more, the gas refrigerant flow velocity in the motor 14 is low, is considered to owing to promote the separation of refrigerator oil 48.And oil content is 0.09 to have big slope at ratio (a/A), if ratio (a/A) greater than 0.09, then can reduce oil content.
Therefore, in the present embodiment, the area of passage is made as than (a/A) makes motor efficiency not with low value more than 0.09, (a/A) is made as 0.12 with ratio.As increase the area of passage in space and breach 59 and wind hole 54, then preferably magnetic field and stator ability are not impacted.In the present embodiment, this motor efficiency is set in the upper limit,, thus, when not reducing compressor capacity, reduces the oil content from the discharge gas that compressor is discharged to take into account oil content.
Claims (2)
1, a kind of rotary 2 stage compressors comprise:
Rotation compression key element, it has in seal container:
Motor has stator (7) and rotor roughly cylindraceous (8), and this stator has iron core portion roughly cylindraceous made of iron and copper cash;
Running shaft has by these electric motor driven 2 eccentric parts; And
Roller (11a, 11b), key element (20b) is that intermediate clapboard (15) is provided with by getting involved with compressing, this low pressure compression key element (20a) and high pressure each pressing chamber (23a of compression key element (20b) with compressing key element (20a) and high pressure in low pressure for it, 23b), carry out revolution motion by the off-centre rotation of above-mentioned eccentric part
Via intermedia (30), it is communicated with the suction port (25b) that above-mentioned low pressure is used the pressing chamber (23b) of compression key element (20b) with the exhaust port (26c) and the above-mentioned high pressure in the discharge space (33) of the pressing chamber (23a) of compression key element (20a); With
With the exhaust port (26b) of the above-mentioned high pressure that is communicated with in the above-mentioned seal container with compression key element (20b),
Pressure in the above-mentioned seal container is the pressure of using the discharge gas after the compression in the compression key element (20b) at above-mentioned high pressure,
Described rotary 2 stage compressors are characterised in that:
On the peripheral part of said stator (7), have:
Notch part (59);
The wind hole (54) of above-mentioned iron core portion;
Be formed on the air clearance between the internal diameter of the external diameter of rotor (8) and stator (7); With
Groove clearance portion between above-mentioned copper cash,
The long-pending summation of each passage sections of above-mentioned air clearance, above-mentioned groove clearance portion, above-mentioned wind hole (54) and above-mentioned notch part (59) is that the area between the sectional area A of inboard of long-pending a of passage sections and described seal container is more than 0.09 than (a/A).
2, rotary 2 stage compressors according to claim 1 is characterized in that: the area between the sectional area A of the inboard of long-pending a of above-mentioned passage sections and described seal container is below 0.12 than (a/A).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004370380 | 2004-12-22 | ||
| JP2004370380A JP2006177225A (en) | 2004-12-22 | 2004-12-22 | Rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1793655A CN1793655A (en) | 2006-06-28 |
| CN100523509C true CN100523509C (en) | 2009-08-05 |
Family
ID=36731561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101369086A Expired - Fee Related CN100523509C (en) | 2004-12-22 | 2005-12-20 | Rotary compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006177225A (en) |
| CN (1) | CN100523509C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976125A (en) * | 2015-07-09 | 2015-10-14 | 广东美芝制冷设备有限公司 | Compressor of air conditioner system and air conditioner system with compressor |
| CN104976127A (en) * | 2015-07-09 | 2015-10-14 | 广东美芝制冷设备有限公司 | Compressor of air conditioner system and air conditioner system with compressor |
| CN105041651A (en) * | 2015-07-09 | 2015-11-11 | 广东美芝制冷设备有限公司 | Compressor and air-conditioning system with same |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010190183A (en) | 2009-02-20 | 2010-09-02 | Sanyo Electric Co Ltd | Sealed type rotary compressor |
| JP2010190182A (en) | 2009-02-20 | 2010-09-02 | Sanyo Electric Co Ltd | Sealed type rotary compressor |
| JP2011074811A (en) * | 2009-09-30 | 2011-04-14 | Sanyo Electric Co Ltd | Electric compressor |
| JP5328697B2 (en) * | 2010-03-02 | 2013-10-30 | 三菱電機株式会社 | Two-stage compressor and heat pump device |
| CN105275811A (en) * | 2014-06-17 | 2016-01-27 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration system with rotary compressor |
| CN104948462B (en) * | 2015-07-09 | 2017-01-18 | 广东美芝制冷设备有限公司 | Compressor and air conditioning system with same |
| CN105508245B (en) * | 2016-01-08 | 2018-01-02 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary compressor |
| JP6703921B2 (en) * | 2016-09-14 | 2020-06-03 | 東芝キヤリア株式会社 | Rotary compressor and refrigeration cycle device |
| JP6648785B2 (en) * | 2018-07-11 | 2020-02-14 | 株式会社富士通ゼネラル | Compressor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60128990A (en) * | 1983-12-16 | 1985-07-10 | Hitachi Ltd | Double stage rotary compressor |
| JPS61280727A (en) * | 1985-05-17 | 1986-12-11 | Sanyo Electric Co Ltd | Hermetic motor compressor |
| JP3670890B2 (en) * | 1999-06-29 | 2005-07-13 | 三洋電機株式会社 | Hermetic rotary compressor |
| JP3936105B2 (en) * | 1999-08-11 | 2007-06-27 | 東芝キヤリア株式会社 | Compressor |
| JP4606639B2 (en) * | 2001-04-27 | 2011-01-05 | 三菱電機株式会社 | Hermetic rotary compressor |
-
2004
- 2004-12-22 JP JP2004370380A patent/JP2006177225A/en active Pending
-
2005
- 2005-12-20 CN CNB2005101369086A patent/CN100523509C/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| JP()60-128990A 1985.07.10 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976125A (en) * | 2015-07-09 | 2015-10-14 | 广东美芝制冷设备有限公司 | Compressor of air conditioner system and air conditioner system with compressor |
| CN104976127A (en) * | 2015-07-09 | 2015-10-14 | 广东美芝制冷设备有限公司 | Compressor of air conditioner system and air conditioner system with compressor |
| CN105041651A (en) * | 2015-07-09 | 2015-11-11 | 广东美芝制冷设备有限公司 | Compressor and air-conditioning system with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1793655A (en) | 2006-06-28 |
| JP2006177225A (en) | 2006-07-06 |
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| ASS | Succession or assignment of patent right |
Owner name: HITACHI AIR CONDITIONING HOME APPLIANCES CO., LTD Free format text: FORMER OWNER: HITACHI DOMESTIC ELECTRICAL APPLIANCE CO. Effective date: 20070323 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20070323 Address after: Tokyo, Japan Applicant after: Hitachi Appliances, Inc. Address before: Tokyo, Japan Applicant before: Hitachi Home & Life Solutions, Inc. |
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Effective date of registration: 20160908 Address after: Hongkong aoteng Plaza No. 8 Chinese Kowloon Linze street 12 floor Patentee after: Johnson Controls Hitachi air conditioning technology (Hong Kong) Co.,Ltd. Address before: Tokyo, Japan Patentee before: Hitachi Appliances, Inc. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180709 Address after: Tokyo, Japan Patentee after: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, Inc. Address before: Hongkong aoteng Plaza No. 8 Chinese Kowloon Linze street 12 floor Patentee before: Johnson Controls Hitachi air conditioning technology (Hong Kong) Co.,Ltd. |
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Granted publication date: 20090805 Termination date: 20211220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |