CN102235355A - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN102235355A CN102235355A CN2011102108267A CN201110210826A CN102235355A CN 102235355 A CN102235355 A CN 102235355A CN 2011102108267 A CN2011102108267 A CN 2011102108267A CN 201110210826 A CN201110210826 A CN 201110210826A CN 102235355 A CN102235355 A CN 102235355A
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- scroll
- pair
- coupling
- oldham
- end plate
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Abstract
The invention relates to a scroll compressor. A cross coupling for connecting a first scroll part and a second scroll part is arranged between the first scroll part and the second scroll part and slides in a sliding cavity formed by the first scroll part and the second scroll part; a first pair of keys are arranged on the upper end face of the cross coupling; a pair of key grooves matched with the first pair of keys are arranged on a first end plate of the first scroll part; a second pair of keys is arranged on the lower end face of the cross coupling; and a pair of key grooves matched with the second pair of keys are arranged on a second end plate of the second scroll part. In the technical scheme, according to the shape of the cross coupling and the positions of the keys arranged on the cross coupling, the first scroll part is directly connected with the second scroll part; the relative rotation between the first scroll part and the second scroll part is effectively prevented; meanwhile, the interferences between the cross coupling and a back-pressure cavity as well as between the cross coupling and an upper support are completely avoided; under the condition of no increase of the outer diameter of the compressor, the sealing area of the back-pressure cavity can be effectively enlarged and the operation range of the compressor is widened.
Description
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Technical field
The present invention relates to a kind of scroll compressor.
Background technique
Existing volution type machine adopts a bent axle usually, does orbiting (being revolution motion) to drive second scroll with respect to first scroll.In order to prevent the relative movement between first, second scroll, generally adopt Oldham's coupling.These Oldham's couplings take various forms, but generally all have two pairs of keys, and every pair of key stretches out from a ring part along identical or opposite direction, and wherein pair of keys matches with the keyway of first scroll or upper support, and pair of keys cooperates with second scroll in addition.
Prior art, the main body sliding scale of Oldham's coupling is located between second scroll and the upper support, and the relative movement that can prevent effectively between first, second scroll is set like this.In the scroll compressor that adopts the unsteady technology of second scroll, the back pressure chamber structure of sealing generally is set at the second scroll dorsal part, by introducing high pressure or intermediate pressure gas muscle power, reach the purpose that second scroll is floated.But in the time of many, design needs to enlarge the area of back pressure cavity for reason such as strengthen range of operation or raise the efficiency.This kind situation certainly will cause second scroll and Oldham's coupling to become big, and then causes that the complete machine size becomes big, finally causes the increase of cost of material and manufacture cost.
Summary of the invention
The purpose of this invention is to provide a kind of scroll compressor, this compressor can be realized the expansion of the effective back pressure chamber area of second scroll under the situation that does not enlarge the compressor external diameter, thereby the range of operation of expansion compressor improves compressor efficiency simultaneously.
For achieving the above object, the present invention has adopted following technological scheme: comprise compressor housing, upper support is installed in the compressor housing, upper support is provided with back pressure chamber, also comprise first, second scroll, first scroll comprises first end plate and outwardly directed first scrollwork from first end plate, second scroll comprises second end plate and outwardly directed second scrollwork from second end plate, first, second scrollwork formation compression chamber that is engaged with each other, described first scroll is fixed in the compressor housing, described second scroll is rotating to be arranged on the upper support, also comprise live axle, one end of live axle links to each other with second scroll and does revolution motion to drive second scroll with respect to first scroll, the other end of live axle links to each other with motor, described first, be provided with the Oldham's coupling that connects both between second scroll, Oldham's coupling is first, slide in the sliding cavity that forms between second scroll, the upper-end surface of Oldham's coupling is provided with pair of keys, first end plate of first scroll is provided with the first pair of keyway that matches with pair of keys, the lower end surface of Oldham's coupling is provided with second pair of key, and second end plate of second scroll is provided with the second pair of keyway that matches with second key.
Second pair of keyway of the present invention is blind groove, and described second end plate is a plane with the end face that second scrollwork deviates from mutually.
Sliding cavity of the present invention is between first end plate and second end plate, and Oldham's coupling moves therein.
The opening direction of second pair of keyway of the present invention points to first scroll.
As shown from the above technical solution, the shape of Oldham's coupling of the present invention with and the position of the key that go up to be provided with can make first, second scroll directly links to each other, also prevented simultaneously both relatively rotating effectively, guarantee reliably accurate rotating position therebetween, by the keyway opening mode of second scroll and the placement of Oldham's coupling, can avoid the interference of Oldham's coupling and back pressure cavity and upper support fully, first pair of keyway of the pair of keys on the Oldham's coupling and first scroll is slidingly fitted, second pair of keyway on the second pair of key and second scroll is slidingly fitted, Oldham's coupling is first, slide between second scroll, under the prerequisite that does not increase by second scroll and described upper support diameter, satisfy the designing requirement of effective back pressure chamber enlarged areas, improved the working efficiency of compressor.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the plan view of the present invention's first scroll;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the plan view of the present invention's second scroll;
Fig. 5 is the B-B sectional view of Fig. 4;
The plan view of Fig. 6 Oldham's coupling of the present invention;
Fig. 7 is the C-C sectional view of Fig. 6;
Fig. 8 is the schematic perspective view of Oldham's coupling of the present invention;
Fig. 9 is the assembling schematic representation of the present invention's first scroll, second scroll, Oldham's coupling and upper support;
Embodiment
The present invention will be further described below in conjunction with accompanying drawing:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of scroll compressor shown in Figure 9, comprise compressor housing 10, upper support 11 is installed in the compressor housing 10, upper support 11 is provided with back pressure cavity 12; Also comprise first, second scroll 20,30, first scroll 20 comprises first end plate 21 and outwardly directed first scrollwork 22 from first end plate 21, second scroll 30 comprises second end plate 31 and outwardly directed second scrollwork 32 from second end plate 31, first, second scrollwork 22,32 is engaged with each other and forms compression chamber 40, first scroll 20 is fixed in the compressor housing 10, second scroll, 30 rotating being arranged on the upper support 11; Also comprise live axle 50, an end of live axle 50 links to each other with second scroll 30 and does revolution motion to drive second scroll 30 with respect to first scroll 20, and the other end of live axle 50 links to each other with motor.
As Fig. 1, shown in Figure 9, first, second scroll 20, be provided with the Oldham's coupling 70 that connects both between 30, Oldham's coupling 70 is first, second scroll 20, slide in the sliding cavity 80 that forms between 30, as Fig. 6, Fig. 7, shown in Figure 8, Oldham's coupling 70 integral body in the form of a ring, the upper-end surface of Oldham's coupling 70 is provided with pair of keys 71, first end plate 21 of first scroll is provided with first pair of keyway, 23, the pair of keys 71 that match with pair of keys 71 and matches with first pair of keyway 23 to prevent relatively rotating between the Oldham's coupling 70 and first scroll 20; The lower end surface of Oldham's coupling 70 is provided with second pair of key 72, second end plate 31 of second scroll is provided with the second pair of keyway 33 that matches with second pair of key 72, second pair of key 72 matches with second pair of keyway 33 to prevent relatively rotating between the Oldham's coupling 70 and second scroll 30, and described second pair of keyway 33 is positioned at the place that dodges of back pressure cavity 12.
The present invention is set to blind groove with second pair of keyway 33, in other words be exactly the thickness of the keyway degree of depth of second pair of keyway 33 less than second end plate 31, and opening direction points to first scroll 20, be exactly that second pair of keyway 33 is arranged on that end face that second end plate 31 is provided with second scrollwork 32 specifically, and second end plate 31 is a plane with the end face that second scrollwork 32 deviates from mutually.Second pair of keyway 33 is provided with the cecutiency groove, be in order to make second scroll 30 when relative first scroll 20 is done revolution motion, second scroll 30 can guarantee all the time that with the end face that back pressure cavity 12 fits back pressure cavity 12 is a closed chamber, promptly is not subjected to the influence of second pair of keyway 33 position.
The present invention is set directly at sliding cavity 80 on first end plate 21 of first scroll 20, promptly on first end plate 21, be provided with one in order to hold the toroidal cavity of Oldham's coupling 70, the advantage of She Zhiing has been to avoid fully the interference of Oldham's coupling 70 with back pressure cavity 12 and upper support 11 like this, accomplish under the situation that does not influence the compressor external diameter, reach the effect that realizes sealing.By the setting of this blind groove, can not increase under the situation of second scroll and upper support external diameter accomplishing, the area of back pressure cavity better is set, improve the range of operation of compressor.Simultaneously, sliding cavity 80 is set directly on first scroll 20, the cross coupling drive directly cooperates with first, second scroll, can effectively increase the accuracy of mesh of first, second scroll 20,30, reduce the leakage of pressurized gas, reduce friction power loss, the deadweight that has also alleviated first scroll 20 simultaneously helps to reduce friction.
Beneficial effect of the present invention is:
1, Oldham's coupling is placed between the one the second scroll, helps reducing the compressor overall dimensions; 2, second scroll is by the mode of this half-open keyway, and the keyway of the back pressure cavity of being offered on the upper support and second scroll is not interfered, and can enlarge the area of the back pressure cavity of compressor, is applicable to the compressor operating of various different operating modes;
3, Oldham's coupling is placed between the one the second scroll, avoided the interference of Oldham's coupling and back pressure cavity and upper support fully, accomplish under the situation that does not influence the compressor external diameter, back pressure cavity better is set, make that second scroll can be under the active force effect of back pressure cavity, better upwards float, realize the better sealing of the one the second scroll;
4, under the situation that reduces the second scroll external diameter, do not influence back pressure cavity by half-open keyway setting, do not influence sealing effect;
5, Oldham's coupling only need be done the fine finishing processing at the keyway slip surface, and all the other positions do not need fine finishing, reduce cost; Oldham's coupling is by rationally being provided with the implementation efficiency maximization.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (4)
1. scroll compressor, comprise compressor housing (10), upper support (11) is installed in the compressor housing (10), upper support (11) is provided with back pressure cavity (12), also comprise first, second scroll (20,30), first scroll (20) comprises first end plate (21) and goes up outwardly directed first scrollwork (22) from first end plate (21), second scroll (30) comprises second end plate (31) and goes up outwardly directed second scrollwork (32) from second end plate (31), first, second scrollwork (22,32) be engaged with each other and form compression chamber (40), described first scroll (20) is fixed in the compressor housing (10), described second scroll (30) is rotating to be arranged on the upper support (11), also comprise live axle (50), one end of live axle (50) links to each other with second scroll (30) and does revolution motion to drive second scroll (30) with respect to first scroll (20), the other end of live axle (50) links to each other with motor, described first, second scroll (20,30) be provided with the Oldham's coupling (70) that connects both between, it is characterized in that: Oldham's coupling (70) is positioned at first, second scroll (20,30) in the formed sliding cavity (80), Oldham's coupling (70) integral body in the form of a ring, the upper-end surface of Oldham's coupling (70) is provided with pair of keys (71), the end plate of first scroll (21) is provided with the first pair of keyway (23) that matches with pair of keys (71), the lower end surface of Oldham's coupling (70) is provided with second pair of key (72), the end plate of second scroll (31) is provided with the second pair of keyway (33) that matches with second pair of key (72), and wherein keyway (33) is in the place that dodges of back pressure cavity (12).
2. scroll compressor according to claim 1 is characterized in that: described second pair of keyway (33) is blind groove, and described second end plate (31) is a plane with the end face that second scrollwork (32) deviates from mutually.
3. scroll compressor according to claim 1 is characterized in that: described sliding cavity (80) is arranged between first end plate (21) and second end (31) plate, and Oldham's coupling (70) slides in this sliding cavity (80).
4. scroll compressor according to claim 1 is characterized in that: the opening direction of second pair of keyway (33) points to first scroll (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102108267A CN102235355A (en) | 2011-07-27 | 2011-07-27 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102108267A CN102235355A (en) | 2011-07-27 | 2011-07-27 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102235355A true CN102235355A (en) | 2011-11-09 |
Family
ID=44886333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102108267A Pending CN102235355A (en) | 2011-07-27 | 2011-07-27 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020213155A1 (en) * | 2019-04-19 | 2020-10-22 | 三菱重工サーマルシステムズ株式会社 | Scroll compressor |
| WO2021128916A1 (en) * | 2019-12-26 | 2021-07-01 | 艾默生环境优化技术(苏州)有限公司 | Scroll and support assembly, and scroll compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138669A (en) * | 1995-06-20 | 1996-12-25 | 株式会社日立制作所 | Eddy compressor |
| CN1247278A (en) * | 1998-06-22 | 2000-03-15 | 特库姆塞制品公司 | Oldam's coupling of whirl compressor |
| JP2009162078A (en) * | 2007-12-28 | 2009-07-23 | Daikin Ind Ltd | Scroll type compressor |
| CN102062097A (en) * | 2011-01-26 | 2011-05-18 | 西安交通大学 | Autorotation preventing mechanism for scroll compressor |
| CN202149028U (en) * | 2011-07-27 | 2012-02-22 | 安徽美芝压缩机有限公司 | Scroll compressor |
-
2011
- 2011-07-27 CN CN2011102108267A patent/CN102235355A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138669A (en) * | 1995-06-20 | 1996-12-25 | 株式会社日立制作所 | Eddy compressor |
| CN1247278A (en) * | 1998-06-22 | 2000-03-15 | 特库姆塞制品公司 | Oldam's coupling of whirl compressor |
| JP2009162078A (en) * | 2007-12-28 | 2009-07-23 | Daikin Ind Ltd | Scroll type compressor |
| CN102062097A (en) * | 2011-01-26 | 2011-05-18 | 西安交通大学 | Autorotation preventing mechanism for scroll compressor |
| CN202149028U (en) * | 2011-07-27 | 2012-02-22 | 安徽美芝压缩机有限公司 | Scroll compressor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020213155A1 (en) * | 2019-04-19 | 2020-10-22 | 三菱重工サーマルシステムズ株式会社 | Scroll compressor |
| JPWO2020213155A1 (en) * | 2019-04-19 | 2020-10-22 | ||
| JP7208364B2 (en) | 2019-04-19 | 2023-01-18 | 三菱重工サーマルシステムズ株式会社 | scroll compressor |
| WO2021128916A1 (en) * | 2019-12-26 | 2021-07-01 | 艾默生环境优化技术(苏州)有限公司 | Scroll and support assembly, and scroll compressor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |