CN100424358C - Hermetic rotary compressor and refrigerating circulatory device using the compressor - Google Patents
Hermetic rotary compressor and refrigerating circulatory device using the compressor Download PDFInfo
- Publication number
- CN100424358C CN100424358C CNB2006101111774A CN200610111177A CN100424358C CN 100424358 C CN100424358 C CN 100424358C CN B2006101111774 A CNB2006101111774 A CN B2006101111774A CN 200610111177 A CN200610111177 A CN 200610111177A CN 100424358 C CN100424358 C CN 100424358C
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- bearing
- ball bearing
- ball
- cylinder
- rotating shaft
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Abstract
The invention provides a hermetic rotary compressor capable of reducing friction loss at a bearing part by solving problems caused by use of ball bearing and enabling use of a ball bearing. This hermetic rotary compressor is provided with a plurality of ball bearings (56, 57) on a main bearing (54) and a ball bearing (58) on an auxiliary bearing (55). Distance between the ball bearings (56, 57) positioned on both end sides of the main bearing (54) is set larger than distance between the ball bearing (57) posisitioned on the cylinder block (52) side of the main bearing (54) and the ball bearing (58) of the auxiliary bearing (55).
Description
Technical field
The present invention relates to a kind of closed rotary compressor and use the refrigerating circulatory device of this compressor, relate in particular to bearing is used the closed rotary compressor of ball bearing and uses the refrigerating circulatory device of this compressor.
Background technique
The bearing of the rotary compressor that uses in the coolant compressor of refrigerating circulatory devices such as air conditioner often uses the shaft bearing of oil lubrication.The bearing lining tile is set on this shaft bearing, support load by between this bearing lining tile and axle, forming oil film from axle, but the bearing lining tile can wear and tear gradually, corresponding with the wearing part of bearing lining tile, axle increases with the gap of bearing lining tile, if axle and the gap of bearing lining tile be more than or equal to a certain degree, just between axle and bearing lining tile, can't keep oil film so, thus the problems such as sintering of generation spool.
On the other hand, the bearing as the wearing and tearing that can reduce bearing has ball bearing, but there is following problem in its use.
Because ball bearing supports for point, so the bending deformation of rotating shaft is big, or because of the internal void of ball bearing makes the gap of press part produce deviation, or lubricates and become unreliable etc.
In addition, in patent documentation 1, disclose a kind of compressor of realizing the ball bearing long lifetime, in patent documentation 2, disclose a kind of rotary compressor that bearing is installed between the eccentric part of cylinder and rotating shaft.
Patent documentation 1: Japanese patent laid-open 6-10865 communique
Patent documentation 2: Japanese patent laid-open 7-83181 communique
Summary of the invention
In view of the above problems, the objective of the invention is to, thereby all problems that provide a kind of use that solves because of ball bearing to produce make ball bearing can use, can reduce the closed rotary compressor of the wearing and tearing of bearing.
In addition, the present invention also aims to provide a kind of refrigerating circulatory device that fault takes place that reduces.
To achieve these goals, in closed rotary compressor of the present invention, in closed box, taken in: motor, and the rotation compression element that links by rotating shaft and this motor, described rotation compression element comprises: the cylinder block that forms the cylinder chamber, cylinder on the indoor eccentric part that is entrenched in described rotating shaft of described cylinder, be arranged on the described motor side of described cylinder block and support the clutch shaft bearing member of described rotating shaft, and be arranged on a side opposite of described cylinder block and support second bearing components of described rotating shaft with motor, it is characterized in that, on described clutch shaft bearing member, be provided with a plurality of ball bearings, and on second bearing components, be provided with at least one ball bearing, in the distance between the described ball bearing of the described ball bearing of cylinder block side and described second bearing components of the distance between the described ball bearing of the both sides of described clutch shaft bearing member greater than described clutch shaft bearing member.
In addition, refrigerating circulatory device of the present invention comprises: above-mentioned compressor, condenser, expansion mechanism and vaporizer.In addition, expansion mechanism has expansion valve or capillary tube.
Adopt closed rotary compressor of the present invention, a kind of closed rotary compressor that uses ball bearing, can reduce the wearing and tearing of bearing can be provided.
In addition, adopt refrigerating circulatory device of the present invention, a kind of refrigerating circulatory device that fault takes place that reduces can be provided.
Description of drawings
Fig. 1 is the schematic representation of closed rotary compressor of the present invention and refrigerating circulatory device.
Fig. 2 is the longitudinal section that the rotation compression element of the closed rotary compressor of one embodiment of the invention is enlarged expression.
Fig. 3 is the longitudinal section that the rotation compression element of the closed rotary compressor of other embodiments of the invention is enlarged expression.
(component symbol explanation)
1 compressor
2 closed boxs
3 motor
4 rotating shafts
11 condensers
12 expansion mechanisms
13 vaporizers
41 eccentric parts
The 4b step
The 4c vertical core
The 4d cross-drilled hole
5 rotation compression elements
52 cylinder block
53 cylinders
54 clutch shaft bearing members
55 second bearing components
56 ball bearings
57 ball bearings
58 ball bearings
59 ball bearings
The S refrigerating circulatory device
Embodiment
Below, the embodiment to closed rotary compressor of the present invention describes with reference to accompanying drawing.
Fig. 1 is the schematic representation of closed rotary compressor of the present invention and refrigerating circulatory device, and Fig. 2 is the longitudinal section that amplifies this rotation compression element of expression.
As shown in Figure 1, refrigerating circulatory device S of the present invention comprises: compressor 1 of the present invention, condenser 11, expansion mechanism 12 and vaporizer 13.
As shown in Figures 1 and 2, rotation compression element 5 comprises: form cylinder chamber 51 cylinder block 52, in cylinder chamber 51, be entrenched in the clutch shaft bearing member 54 of cylinder 53, the motor side that is arranged on cylinder block 52 and supporting revolving shaft 4 on the eccentric part 4a of rotating shaft 4 and be arranged on a side opposite of cylinder block 52 and second bearing components 55 of supporting revolving shaft 4 with motor.
On clutch shaft bearing member 54, a plurality of, two ball bearings 56,57 for example are set near its both sides, on second bearing components 55, ball bearing 58 is set.In addition, the distance L b between the ball bearing 57 in cylinder block side of the ball bearing 56 of cylinder block opposition side and clutch shaft bearing member 54 of clutch shaft bearing member 54 is greater than the distance L o between ball bearing 57 and the ball bearing 58.
Distance L b between two ball bearings 56,57 is big more, and the inclination of rotating shaft 4 is just more little, and the whirling of motor rotor (not shown) diminishes.In addition, the distance L o between two ball bearings 57,58 is more little, and the distance of putting the strong point from gas load is just more little, so can reduce the deflection of rotating shaft 4.In addition,, can suppress the deflection of the rotating shaft 4 of clutch shaft bearing member 54 sides, meanwhile, can also suppress the displacement amount of eccentric part 4a, can guarantee that cylinder 53 and the gap between the cylinder chamber 51 important in rotary are less by making distance L b＞distance L o.
In addition, cylinder 53 is entrenched on the eccentric part 4a of rotating shaft 4 by ball bearing 59, if establishing the external diameter of cylinder 53 is Dr, the external diameter of the ball bearing 56,57,58 of the clutch shaft bearing member 54 and second bearing components 55 is Db, the offset of the eccentric part 4a of rotating shaft 4 is e, so preferably is set at (Dr-2e)＞Db.
Generally in hermetic rotary compressor, there is low-pressure gas in outer circumferential side because interior all sides of cylinder are full of pressurized gas and oil, so must seal reliably between them, in sealing portion, gap and seal length are key factors, if seal length is short, then leak change greatly, make the decreased performance of compressor.Yet, as present embodiment,,, can guarantee enough seal length, thereby can prevent to leak by making (Dr-2e)＞Db in order to ensure the sealing of the end thrust face of cylinder.
In addition, be formed with step 4b in the end thrust direction both sides of eccentric part 4a with rotating shaft 4 and mid diameter of eccentric part 4a, and respectively as the limiting stopper of ball bearing 57,58, thereby restriction rotating shaft 4 moving on the end thrust direction.
In the structure of not using ball bearing, utilize the end face of the step be arranged on the axle and clutch shaft bearing member, second bearing components to come moving of restrictive axial thrust direction.Relative therewith, in the structure of using ball bearing, it is big that the internal diameter of clutch shaft bearing member, second bearing components becomes, thereby be difficult to moving of restrictive axes, but can use the inner ring of ball bearing 57,58, utilize to be arranged on rotating shaft 4 and to top bar and limit rotating shaft 4 moving on the end thrust direction.
In addition, as shown in Figure 3, preferably make the ball bearing that is positioned at cylinder block side 57 of clutch shaft bearing member 54 and ball bearing 58 parts of second bearing components 55 charge into cylinder chamber 51, thereby make distance L s between the end face of each cylinder block side of ball bearing 57 and ball bearing 58 less than the height Lc of cylinder block 52.
Thus, distance L s diminishes, thereby can reduce the deflection of rotating shaft 4, because the displacement amount of eccentric part 4a diminishes, thus can guarantee that the gap between cylinder 53 and the cylinder chamber 51 is less, thus can improve performance, and the axle that the bearing bight do not occur is killed etc., and reliability also can improve.
Do not use in the structure in the past of ball bearing, if the interval that makes the clutch shaft bearing member and second bearing components less than cylinder chamber height, then the bent axle height diminishes, thereby has the shortcoming that surface pressure increases.Yet, under the situation of the present embodiment that uses ball bearing, owing to can under less height dimension, have bigger load allowable, thus can be in the fixed-site of giving prominence to from bearing face, thus the interval that can make the clutch shaft bearing member and second bearing components is less than cylinder chamber height.
In addition, be provided with by the vertical core 4c that is provided with along the axle center from the lower end surface of rotating shaft 4 and is communicated with this vertical core 4c be positioned at the oil supply system that near ball bearing 56 cross-drilled hole 4d constitute, to ball bearing 56 supplying lubricating oils.Ball bearing 56 especially is difficult to supplying lubricating oil in low rotation speed area, but by described oil supply system is set, supplies with and can carry out reliably to the lubricant oil of ball bearing.
As mentioned above, adopt the closed rotary compressor of present embodiment, the closed rotary compressor that can realize to use ball bearing, can reduce the wearing and tearing of bearing.
In addition, by using the closed rotary compressor of the wearing and tearing that can reduce bearing, can realize to reduce the refrigerating circulatory device that fault takes place.
Claims (4)
1. closed rotary compressor, in closed box, taken in: motor, and the rotation compression element that links by rotating shaft and this motor, described rotation compression element comprises: the cylinder block that forms the cylinder chamber, cylinder on the indoor eccentric part that is entrenched in described rotating shaft of described cylinder, be arranged on the described motor side of described cylinder block and support the clutch shaft bearing member of described rotating shaft, and be arranged on a side opposite of described cylinder block and support second bearing components of described rotating shaft with motor, it is characterized in that, on described clutch shaft bearing member, be provided with a plurality of ball bearings, and on second bearing components, be provided with at least one ball bearing, in the distance between the described ball bearing of the ball bearing of cylinder block side and described second bearing components of the distance between the ball bearing of the both sides of described clutch shaft bearing member greater than described clutch shaft bearing member.
2. closed rotary compressor as claimed in claim 1, it is characterized in that, between the eccentric part of described rotating shaft and cylinder, be provided with ball bearing, at the external diameter of establishing cylinder is that the external diameter of the ball bearing of Dr, clutch shaft bearing member and second bearing components is the offset of the eccentric part of Db, rotating shaft when being e, makes (Dr-2e)＞Db.
3. closed rotary compressor as claimed in claim 1 or 2, it is characterized in that the distance between the end face of each cylinder block side of the ball bearing of the ball bearing of cylinder block side and second bearing components of described clutch shaft bearing member is less than the height of cylinder block.
4. a refrigerating circulatory device is characterized in that, comprising: each described compressor, condenser, expansion mechanism and vaporizer in the claim 1 to 3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005231691 | 2005-08-10 | ||
| JP2005231691A JP2007046537A (en) | 2005-08-10 | 2005-08-10 | Hermetic rotary compressor and refrigeration cycle device using same |
| JP2005-231691 | 2005-08-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1912394A CN1912394A (en) | 2007-02-14 |
| CN100424358C true CN100424358C (en) | 2008-10-08 |
Family
ID=37721414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101111774A Expired - Fee Related CN100424358C (en) | 2005-08-10 | 2006-08-09 | Hermetic rotary compressor and refrigerating circulatory device using the compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007046537A (en) |
| CN (1) | CN100424358C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196726B (en) * | 2014-08-22 | 2016-04-20 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN105090031B (en) * | 2015-09-17 | 2017-12-01 | 广东美芝制冷设备有限公司 | Rotary compressor and there is its refrigerating circulatory device |
| CN105090030B (en) * | 2015-09-17 | 2018-01-16 | 广东美芝制冷设备有限公司 | Electric rotary compressor |
| CN105736372B (en) * | 2016-04-20 | 2018-06-15 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN105864048A (en) * | 2016-06-16 | 2016-08-17 | 珠海格力电器股份有限公司 | Rotor compressor and rotor assembly thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0184281A1 (en) * | 1984-11-13 | 1986-06-11 | Tecumseh Products Company | Main bearing for a rotary compressor |
| CN85200749U (en) * | 1985-09-18 | 1987-02-18 | 李铁民 | Air compressor |
| CN2205526Y (en) * | 1994-04-24 | 1995-08-16 | 周湘江 | Rotor gas compressor |
| US5564917A (en) * | 1993-04-27 | 1996-10-15 | Carrier Corporation | Rotary compressor with oil injection |
| CN1169511A (en) * | 1996-06-07 | 1998-01-07 | 松下电器产业株式会社 | Gear pump for use in electrically-operated sealed compressor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06103037B2 (en) * | 1986-09-11 | 1994-12-14 | 日本電装株式会社 | Rotary piston pump |
| JPH0565886A (en) * | 1991-09-05 | 1993-03-19 | Matsushita Refrig Co Ltd | Liquid refrigerant conveyer |
| JP4384368B2 (en) * | 2001-02-22 | 2009-12-16 | 株式会社日立製作所 | Hermetic rotary compressor and refrigeration / air conditioner |
| JP2002303283A (en) * | 2001-04-04 | 2002-10-18 | Nippon Soken Inc | Fluid pump |
| US6827564B2 (en) * | 2001-04-12 | 2004-12-07 | Knf Neuberger Gmbh | Rotary compressor |
| JP2003148368A (en) * | 2001-11-09 | 2003-05-21 | Tochigi Fuji Ind Co Ltd | Shaft support structure for rotor for fluid machine |
-
2005
- 2005-08-10 JP JP2005231691A patent/JP2007046537A/en active Pending
-
2006
- 2006-08-09 CN CNB2006101111774A patent/CN100424358C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0184281A1 (en) * | 1984-11-13 | 1986-06-11 | Tecumseh Products Company | Main bearing for a rotary compressor |
| CN85200749U (en) * | 1985-09-18 | 1987-02-18 | 李铁民 | Air compressor |
| US5564917A (en) * | 1993-04-27 | 1996-10-15 | Carrier Corporation | Rotary compressor with oil injection |
| CN2205526Y (en) * | 1994-04-24 | 1995-08-16 | 周湘江 | Rotor gas compressor |
| CN1169511A (en) * | 1996-06-07 | 1998-01-07 | 松下电器产业株式会社 | Gear pump for use in electrically-operated sealed compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1912394A (en) | 2007-02-14 |
| JP2007046537A (en) | 2007-02-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20120809 |