CN102287371A - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN102287371A CN102287371A CN2011102763329A CN201110276332A CN102287371A CN 102287371 A CN102287371 A CN 102287371A CN 2011102763329 A CN2011102763329 A CN 2011102763329A CN 201110276332 A CN201110276332 A CN 201110276332A CN 102287371 A CN102287371 A CN 102287371A
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- sealing
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- annular pass
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- hole
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Abstract
The invention discloses a scroll compressor, which mainly comprises a shell, an upper cover, a high and low pressure isolating plate, a fixed vortex component, a movable vortex component, a cross-shaped ring, an upper support, a crankshaft, a motor rotor, a motor stator and a circular ring, wherein the upper surface of the fixed vortex component is provided with an annular channel; the annular channel is provide with an unloading hole communicated with a compression cavity and an unloading channel communicated with a low-pressure cavity; the circular ring is arranged in the annular channel; a sealing piece is arranged between the annular channel and the circular ring; when the circular ring moves upwards, the sealing piece is used for communicating the unloading hole with the unloading channel through the annular channel; and when the circular ring moves downwards, the sealing piece is used for sealing the unloading hole in a sealing space of the annular channel, so that the unloading channel is not communicated with the sealing space of the annular channel. The scroll compressor has the beneficial effects that: the starting performance of the scroll compressor can be improved, abnormal pressure rising caused by hydraulic compression can be avoided, and the working reliability of the compressor is improved.
Description
Technical field
The invention belongs to refrigeration technology field, especially relate to compressor, particularly scroll compressor.
Background technique
Existing scroll compressor comprise be provided with the spirality scroll wrap decide scroll element, with decide the moving scroll element that is provided with the spirality scroll wrap that scroll element matches, move scroll element and decide a plurality of compression chambers that scroll element has complemented each other to form variable volume, move scroll element along its revolution orbit revolution by the driven by motor crank-driven, thereby finish suction, compression and the discharge of gas.The deficiency of existing scroll compressor is: in the starting process, a plurality of compression chambers compress the bigger resistance of generation simultaneously, and the load when making electric motor starting is very big, cause starting difficulty even possibly to start; May have liquid refrigerant when compressor start and running and enter compression chamber, because the incompressibility of liquid, compression can cause the compression chamber pressure anomaly to raise by force, causes compressor " liquid hammer " to damage.
Summary of the invention
The objective of the invention is in order to solve above shortcomings in the prior art, propose a kind of scroll compressor that can when starting, reduce starting duty and reduce " liquid hammer " possibility occurrence.
To achieve these goals, technological scheme of the present invention is as follows:
A kind of scroll compressor, mainly comprise housing, loam cake, high low pressure isolating plate, decide scroll element, move scroll element, partition ring, upper support, bent axle, rotor and motor stator, move scroll element and decide scroll element and complement each other to form a plurality of compression chambers, decide between scroll element and the high low pressure isolating plate by the sealing of high low pressure Sealing, the high low pressure isolating plate separates hyperbaric chamber and low-pressure cavity, it is characterized in that: described scroll compressor also comprises and is installed in the annulus of deciding between scroll element and the high low pressure isolating plate; Described axle sleeve position of deciding the scroll element upper surface offers an annular pass, have the unloading hole that communicates with compression chamber more than on the annular pass, Kong Yuyi compression chamber of a unloading communicates, and the annular pass also is provided with the relief passage that communicates with low-pressure cavity more than; Described annulus is installed in the annular pass of deciding scroll element, and the endoporus of annulus is a Spielpassung with the outer surface of deciding the axle sleeve position of scroll element, and annulus can move axially along the axle sleeve of deciding scroll element in the annular pass; Be provided with Sealing between annular pass and the annulus, sealing station is when being moved upward to the annulus upper surface and contacting with the lower surface of high low pressure isolating plate when annulus, Sealing will unload the hole and be communicated with the annular pass, the relief passage is communicated with the annular pass, the relief passage is communicated with the unloading hole by the annular pass, Sealing will unload the seal space that the hole is sealed in the annular pass when annulus is moved downward to the annulus lower surface and contacts with the bottom surface, annular pass of deciding scroll element, and the relief passage does not communicate with the annular pass seal space.
Scroll compressor of the present invention is characterized in that: the sealing means of the Sealing between described annular pass and the annulus is a kind of in the following manner;
Sealing is located in the annulus, the bottom of outer side wall, Sealing A on the madial wall of annulus and the axle sleeve position sealing of deciding scroll element, Sealing B on the annulus outer side wall and annular pass side seal, relief passage A drives the position, middle and upper part at the annular pass sidewall, the position of Sealing A and Sealing B is when annulus is moved upward to the annulus upper surface and contacts with the lower surface of high low pressure isolating plate, Sealing A and Sealing B are positioned at relief passage A mouth upper position, relief passage A is communicated with the unloading hole by the annular pass, Sealing A and Sealing B were positioned at relief passage A mouth lower position when annulus was moved downward to the annulus lower surface and contacts with the bottom surface, annular pass of deciding scroll element, and relief passage A is not communicated with the annular pass;
Sealing c is located at the unloading aperture, be provided with along unloading aperture periphery, annulus only in place, unloading aperture and annular pass sealing, has the space between the outer side wall of annulus and the sidewall of annular pass, and the space between the outer side wall of annulus and the sidewall of annular pass constitutes relief passage B.
Scroll compressor of the present invention is characterized in that: described unloading hole is positioned on the bottom surface, annular pass.
Scroll compressor of the present invention is characterized in that: the cross-section area of described relief passage A is 1-100mm
2Space between the outer side wall of described annulus and the sidewall of annular pass is 0.1-10mm.
Scroll compressor of the present invention is characterized in that: described unloading hole shape is a circular hole, or a kind of in elliptical aperture and the square hole.
Scroll compressor of the present invention is characterized in that described unloading hole cross-section area is 1-100mm
2
The job step of scroll compressor of the present invention, it is characterized in that: described job step comprises: before the scroll compressor starting, hyperbaric chamber pressure is identical with low-pressure cavity pressure, high low pressure Sealing two ends do not have pressure reduction, annulus under action of gravity with decide bottom surface, scroll element annular pass and contact; When the scroll compressor starting, when the pressure of compression chamber raise, under the effect of compression chamber pressure, high low pressure Sealing and annulus moved up along the axle sleeve of deciding scroll element, and the Sealing sealing station is changed, wherein:
Sealing is located at the bottom of annulus inside and outside sidewall
Plant in the sealing means, Sealing A and Sealing B rise to relief passage mouth upper position sealing, the relief passage is communicated with the annular pass, thereby the unloading hole is communicated with by the annular pass with relief passage A, makes the logical unloading of gas hole, annular pass and relief passage A in the compression chamber leak into low-pressure cavity;
Sealing is located on the annulus bottom plane
Plant in the sealing means, Sealing D and Sealing E leave the bottom surface, annular pass, the unloading hole is communicated with the annular pass, makes the relief passage B of space formation between the logical sidewall that unloads hole, annular pass and annulus outer side wall and annular pass of gas in the compression chamber leak into low-pressure cavity;
Sealing c is located at the unloading aperture
In kind of the sealing means, the annulus lower surface leaves Sealing c, and the unloading hole is communicated with the annular pass, makes the relief passage B of space formation between the logical sidewall that unloads hole, annular pass and annulus outer side wall and annular pass of gas in the compression chamber leak into low-pressure cavity;
When the pressure of hyperbaric chamber was high, pressure affacted the high low pressure Sealing, and high low pressure Sealing and annulus move down along the axle sleeve of deciding scroll element, and the Sealing sealing station is changed, wherein:
Sealing is located at the bottom of annulus inside and outside sidewall
In kind of the sealing means, when annulus was moved downward to the annulus lower surface and contacts with the bottom surface, annular pass of deciding scroll element, Sealing A and Sealing B were positioned at relief passage A mouth lower position, and relief passage A is not communicated with the annular pass;
Sealing is located on the annulus bottom plane
Plant in the sealing means, Sealing D and Sealing E and bottom surface, annular pass connect, and will unload the hole and be sealed between Sealing D and the Sealing E, and unloading Kong Buyu annular pass is communicated;
Sealing c is located at the unloading aperture
Plant in the sealing means, annulus lower surface and Sealing c connect, and make the unloading hole sealed, are not communicated with the annular pass;
After the scroll compressor starting, along with the pressure in the hyperbaric chamber rises, pressure reduction appears in high low pressure Sealing two ends, under the effect of pressure reduction, high low pressure Sealing and annulus are moved downward to position before the scroll compressor starting along the axle sleeve of decide scroll element, and what make unloading hole and relief passage is communicated with and separates automatic realization.
Compared with prior art, the present invention has following beneficial effect:
1, owing to of the present inventionly decide to have on the scroll element one or more and unloads the hole, be communicated with compression chamber and low-pressure cavity, gas in the compression chamber can leak into low-pressure cavity by the unloading hole, because the portion gas of compression chamber can be bled into low-pressure cavity, thereby slowed down the speed that hyperbaric chamber and low-pressure cavity pressure reduction are set up, reduced starting duty, from having improved the reliability of scroll compressor starting greatly.
2, owing to of the present inventionly decide scroll element and be provided with an annulus, can endwisely slip along deciding scroll element.Annulus contacts with the high low pressure Sealing, when hyperbaric chamber pressure acts on the high low pressure Sealing annulus is produced pressure, makes annulus to moving near deciding the scroll element direction.At annulus and decide to be equipped with between the scroll element Sealing, when annulus towards deciding the scroll element direction when moving, Sealing will unload the hole sealing, make the unloading bore closure; Annulus is decided the scroll element direction dorsad and is moved under the pressure effect of compression chamber, and Sealing lost efficacy to unloading hole sealing, and the unloading hole is opened.Thereby realized closing automatically and opening of unloading hole.
3, owing to of the present inventionly decide to have on the scroll element one or more unloadings hole, be communicated with compression chamber and low-pressure cavity, also can be bled into low-pressure cavity, can not produce too high pressure by the unloading hole if liquid refrigerant enters compression chamber, thus the generation of minimizing liquid hammer.
4, because the present invention has reduced starting duty, scroll compressor can utilization efficiency higher and motor that starting performance is relatively low, thereby improve efficiency.
Description of drawings
The present invention has six width of cloth accompanying drawings.Wherein:
Fig. 1 is the scroll compressor structural representation that Sealing is located at the inside and outside sidewall of annulus bottom;
Fig. 2 is the scroll compressor structural representation that Sealing is located at the unloading aperture;
Fig. 3 is that Sealing is located at the scroll compressor structural representation on the annulus bottom plane;
Fig. 4 decides scroll element partial structurtes schematic representation;
Annulus position partial structurtes schematic representation when the relief passage is communicated with the annular pass during starting of Fig. 5 scroll compressor;
Fig. 6 is the partial structurtes view of annulus position when the relief passage was not communicated with the annular pass after scroll compressor started fully.
Among the figure: 1, housing, 2, loam cake, 3, the high low pressure isolating plate, 4, decide scroll element, 5, moving scroll element, 6, partition ring, 7, upper support, 8, bent axle, 9, rotor, 10, motor stator, 11, the high low pressure Sealing, 12, annulus, 13, Sealing A, 14, Sealing B, 15, the annular pass, 16, the unloading hole, 17, relief passage A, 18, low-pressure cavity, 19, hyperbaric chamber, 20, compression chamber, 21, high low pressure isolating plate lower surface, 22, the annulus upper surface, 23, the bottom surface, annular pass, 24, the annulus lower surface, 25, Sealing C, 26, Sealing D, 27, Sealing E, 28, relief passage B.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.Scroll compressor mainly comprises housing 1, loam cake 2, high low pressure isolating plate 3, decide scroll element 4, moving scroll element 5, partition ring 6, upper support 7, bent axle 8, rotor 9 and motor stator 10, move scroll element 5 and decide scroll element 4 and complement each other to form a plurality of compression chambers 20, decide between scroll element 4 and the high low pressure isolating plate 3 by 11 sealings of high low pressure Sealing, high low pressure isolating plate 3 separates hyperbaric chamber 19 and low-pressure cavity 18, decide the axle sleeve position of scroll element 4 upper surfaces and offer an annular pass 15, in annular pass 15, offer unloading hole 16 more than, unloading hole 16 is positioned on the bottom surface, annular pass 23, unloading hole 16 shapes are circular holes, or a kind of in elliptical aperture and the square hole.Unloading hole 16 cross-section areas are 1-100mm
2, offer an above relief passage 17,28 simultaneously; Being equipped with in annular pass 15 can be along the annulus 12 that axially moves up and down, and is provided with Sealing between logical 15 roads of annular and the annulus 12.
As shown in Figure 1, be that the Sealing of sealing between logical 15 roads of annular and the annulus 12 is located on the interior outer side wall of annulus 12, Sealing A13 and Sealing B14 are installed in the inside and outside lower sidewall of annulus 12, and relief passage A17 is opened on the sidewall of annular pass 15; Relief passage A17 cross-section area is 1-100mm
2Annulus 12 upper surfaces 22 contact with the lower surface 21 of high low pressure isolating plate 3 when upwards rising, Sealing A13 and Sealing B14 are at top and the annular pass sidewall and the sleeve sealing of deciding scroll element 4 of relief passage A17 mouth, annulus upper surface 22 when landing downwards and the lower surface 21 of high low pressure isolating plate 3 be separated, annulus lower surface 24 contacts with deciding bottom surface, scroll element 4 annular pass 23, and Sealing A13 and Sealing B14 are at bottom and annular pass 15 sidewalls and the sleeve sealing of deciding scroll element 4 of relief passage A17 mouth.
Embodiment 2
As shown in Figure 2, the Sealing that is sealing between logical 15 roads of annular and the annulus 12 is located at place, unloading aperture, Sealing c25 is located at the 16 mouthfuls of places, unloading hole that decide bottom surface, scroll element 4 annular pass 23, be provided with along the 16 mouthfuls of peripheries in unloading hole, annulus 12 is only in unloading 16 mouthfuls of places, hole and annular pass 15 sealings, the 0.1-10mm space is arranged between the sidewall of the outer side wall of annulus 12 and annular pass 15, and the space between the sidewall of the outer side wall of annulus 12 and annular pass 15 constitutes relief passage B28.
As shown in Figure 3, the Sealing that is sealing between logical 15 roads of annular and the annulus 12 is located on annulus 12 bottom planes, along annulus Sealing D26 and Sealing E27 two seals part are set, Sealing D26 is positioned at the outer rim of unloading hole 16 nearly crankshaft side, Sealing E27 is positioned at the outer rim of unloading hole 16 crankshaft side far away, the 0.1-10mm space is arranged between the sidewall of the outer side wall of annulus 12 and annular pass 15, and the space between the sidewall of the outer side wall of annulus 12 and annular pass 15 constitutes relief passage B28;
Working principle of the present invention is as follows: before the scroll compressor starting, hyperbaric chamber 19 pressure are identical with low-pressure cavity 18 pressure, high low pressure Sealing 11 two ends do not have pressure reduction, and annulus 12 contacts with deciding bottom surface, scroll element annular pass 23 under action of gravity, as shown in Figure 6; When scroll compressor starts, moving scroll element 5 horizontally rotates compression chamber 20 volumes and reduces, with the gas in the compression chamber 20 that is communicated with of unloading hole 16, flow out along unloading hole 16, promote annulus 12 and upwards rise, gas enters annular pass 15,17 flow into low-pressure cavity 18 along the relief passage, therefore having only portion gas to be compressed enters hyperbaric chamber 19, as shown in Figure 5, thereby starting torque is reduced greatly.Along with the pressure in the rising of the pressure in the hyperbaric chamber 20, the low-pressure cavity 18 reduces, pressure reduction appears in high low pressure Sealing 11 two ends, under the effect of pressure reduction, annulus 12 is produced active force, annulus 12 moves down, Sealing 13,14 will unload hole 16 and separate with the annular pass, gas in the compression chamber 20 stops to flow out along unloading hole 16, and annulus 12 is got back to and decided scroll element 4 shape passage bottoms 23 contact positions.
Claims (7)
1. scroll compressor, mainly comprise housing (1), loam cake (2), high low pressure isolating plate (3), decide scroll element (4), moving scroll element (5), partition ring (6), upper support (7), bent axle (8), rotor (9) and motor stator (10), move scroll element (5) and decide scroll element (4) and complement each other to form a plurality of compression chambers (20), decide between scroll element (4) and the high low pressure isolating plate (3) by high low pressure Sealing (11) sealing, high low pressure isolating plate (3) separates hyperbaric chamber (19) and low-pressure cavity (18), it is characterized in that: described scroll compressor also comprises and is installed in the annulus of deciding between scroll element (4) and the high low pressure isolating plate (3) (12); Described axle sleeve position of deciding scroll element (4) upper surface offers an annular pass (15), have the unloading hole (16) that communicates with compression chamber (20) more than on the annular pass (15), Kong Yuyi compression chamber of a unloading communicates, and annular pass (15) also are provided with the relief passage (17,28) that communicates with low-pressure cavity (18) more than; Described annulus (12) is installed in the annular pass (15) of deciding scroll element (4), the endoporus of annulus (12) and the outer surface of deciding the axle sleeve position of scroll element (4) are Spielpassung, and annulus (12) can move axially along the axle sleeve of deciding scroll element (4) in annular pass (15); Be provided with Sealing between annular pass (15) and the annulus (12), sealing station is at the lower surface (21) that is moved upward to annulus upper surface (22) and high low pressure isolating plate (3) when annulus (12) when contacting, Sealing will unload hole (16) and be communicated with annular pass (15), with relief passage (17,28) be communicated with annular pass (15), make relief passage (17,28) communicate with unloading hole (16) by annular pass (15), when annulus (12) be moved downward to annulus lower surface (24) and the bottom surface, annular pass (23) of deciding scroll element (4) when contacting Sealing will unload the seal space that hole (16) is sealed in annular pass (15), relief passage (17,28) do not communicate with annular pass (15) seal space.
2. scroll compressor according to claim 1 is characterized in that: the sealing means of the Sealing between described annular pass (15) and the annulus (12) is a kind of in the following manner;
3. scroll compressor according to claim 2 is characterized in that: the cross-section area of described relief passage A (17) is 1-100mm
2Space between the sidewall of the outer side wall of described annulus (12) and annular pass (15) is 0.1-10mm.
4. scroll compressor according to claim 1 is characterized in that: described unloading hole (16) is positioned on the bottom surface, annular pass (23).
5. scroll compressor according to claim 4 is characterized in that: described unloading hole (16) shape is a circular hole, or a kind of in elliptical aperture and the square hole.
6. scroll compressor according to claim 5 is characterized in that: described unloading hole (16) cross-section area is 1-100mm
2
7. the job step of the described scroll compressor of claim 1, it is characterized in that: described job step comprises: before the scroll compressor starting, hyperbaric chamber (19) pressure is identical with low-pressure cavity (18) pressure, high low pressure Sealing (11) two ends do not have pressure reduction, annulus (12) under action of gravity with decide scroll element (4) bottom surface, annular pass (23) and contact; When the scroll compressor starting, when the pressure of compression chamber (20) raise, under compression chamber (20) pressure effect, high low pressure Sealing (11) and annulus (12) moved up along the axle sleeve of deciding scroll element (4), Sealing (13,14,26,27) sealing station is changed, wherein:
Sealing is located at the bottom of annulus (12) inside and outside sidewall
Plant in the sealing means, Sealing A (13) and Sealing B (14) rise to relief passage A (17) mouthful of upper position sealing, relief passage A (17) is communicated with annular pass (15), thereby unloading hole (16) is communicated with by annular pass (15) with relief passage A (17), makes the logical unloading of gas hole (16), annular pass (15) and relief passage A (17) in the compression chamber leak into low-pressure cavity;
Sealing is located on annulus (12) bottom plane
Plant in the sealing means, Sealing D (26) and Sealing E (27) leave bottom surface, annular pass (23), unloading hole (16) is communicated with annular pass (15), makes the relief passage B (28) of space formation between the logical sidewall that unloads hole (16), annular pass (15) and annulus (12) outer side wall and annular pass (15) of gas in the compression chamber leak into low-pressure cavity;
Sealing c (25) is located at unloading hole (16) mouth
Plant in the sealing means, annulus lower surface (24) leaves Sealing c (25), unloading hole (16) is communicated with annular pass (15), makes the relief passage B (28) of space formation between the logical sidewall that unloads hole (16), annular pass (15) and annulus (12) outer side wall and annular pass (15) of gas in the compression chamber leak into low-pressure cavity;
After the scroll compressor starting, along with the pressure in the hyperbaric chamber (20) rises, pressure reduction appears in high low pressure Sealing (11) two ends, under the effect of pressure reduction, high low pressure Sealing (11) and annulus (12) are moved downward to position before the scroll compressor starting along the axle sleeve of decide scroll element (4), and what make unloading hole (16) and relief passage (17,28) is communicated with and separates automatic realization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102763329A CN102287371A (en) | 2011-09-16 | 2011-09-16 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102763329A CN102287371A (en) | 2011-09-16 | 2011-09-16 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287371A true CN102287371A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102763329A Pending CN102287371A (en) | 2011-09-16 | 2011-09-16 | Scroll compressor |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295493A (en) * | 2014-09-16 | 2015-01-21 | 合肥圣三松冷热技术有限公司 | Scroll compressor with axially flexible sealed structure |
| WO2024002351A1 (en) * | 2022-06-30 | 2024-01-04 | 谷轮环境科技（苏州）有限公司 | Compression mechanism, scroll compressor and control method for scroll compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08210278A (en) * | 1994-11-21 | 1996-08-20 | Copeland Corp | Scroll type machine |
| CN1158945A (en) * | 1995-12-19 | 1997-09-10 | 科普兰公司 | Scroll machine with capacity modulation |
| JP2004143951A (en) * | 2002-10-22 | 2004-05-20 | Tokyo Gas Co Ltd | Scroll compressor |
| JP2006183518A (en) * | 2004-12-27 | 2006-07-13 | Lg Electronics Inc | Vacuum prevention device for scroll compressor |
| CN101761477A (en) * | 2009-12-22 | 2010-06-30 | 大连三洋压缩机有限公司 | Scroll compressor |
-
2011
- 2011-09-16 CN CN2011102763329A patent/CN102287371A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08210278A (en) * | 1994-11-21 | 1996-08-20 | Copeland Corp | Scroll type machine |
| CN1158945A (en) * | 1995-12-19 | 1997-09-10 | 科普兰公司 | Scroll machine with capacity modulation |
| JP2004143951A (en) * | 2002-10-22 | 2004-05-20 | Tokyo Gas Co Ltd | Scroll compressor |
| JP2006183518A (en) * | 2004-12-27 | 2006-07-13 | Lg Electronics Inc | Vacuum prevention device for scroll compressor |
| CN101761477A (en) * | 2009-12-22 | 2010-06-30 | 大连三洋压缩机有限公司 | Scroll compressor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295493A (en) * | 2014-09-16 | 2015-01-21 | 合肥圣三松冷热技术有限公司 | Scroll compressor with axially flexible sealed structure |
| WO2024002351A1 (en) * | 2022-06-30 | 2024-01-04 | 谷轮环境科技（苏州）有限公司 | Compression mechanism, scroll compressor and control method for scroll compressor |
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Application publication date: 20111221 |
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