CN104976128A - Rotary compressor and compression assembly thereof - Google Patents
Rotary compressor and compression assembly thereof Download PDFInfo
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- CN104976128A CN104976128A CN201510416213.7A CN201510416213A CN104976128A CN 104976128 A CN104976128 A CN 104976128A CN 201510416213 A CN201510416213 A CN 201510416213A CN 104976128 A CN104976128 A CN 104976128A
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Abstract
The invention discloses a rotary compressor and a compression assembly thereof. The compression assembly comprises an air cylinder, a piston, an upper bearing and a lower bearing. The air cylinder is provided with a slip sheet groove. A suction port and a first exhaust hole are formed in the two sides of the slip sheet groove respectively. The compression assembly is provided with a first valve plate for opening and closing the first exhaust hole. The piston is arranged in the air cylinder in an eccentrically rotary mode. The upper bearing and the lower bearing are arranged at the upper end and the lower end of the air cylinder respectively. The upper bearing and/or the lower bearing are/is provided with at least one second exhaust hole. The compression assembly is provided with a second valve plate for opening and closing the second exhaust hole. The projection of the second exhaust hole and the projection of the first exhaust hole on the horizontal plane are not overlapped. The rigidity of the second valve plate is smaller than that of the first valve plate. According to the compression assembly, over-compression loss in the exhaust process can be reduced, clearance volume is reduced, and the operating efficiency of the compressor is improved.
Description
Technical field
The present invention relates to Compressor Technology field, especially relate to a kind of compression assembly for rotary compressor and there is the rotary compressor of this compression assembly.
Background technique
In correlation technique, the exhaust mode of the one-sided exhaust of the many employings of rotary compressor, exhaust port is the angular cut be formed on cylinder, within the horizontal projection part of exhaust port is positioned at cylinder bore diameter, a part is positioned at beyond cylinder bore diameter, exhaust angle usually between 340 °-360 ° and exhaust port edge as far as possible near 360 ° (with vane slot center for benchmark, counterclockwise).But for the compressor that discharge capacity is larger, when particularly cylinder height is higher, single exhaust port is difficult to the exhaust demand meeting compression chamber, cause overcompression loss to increase, compressor enters power and rises.
For this reason, rotary compression chance adopts double-exhaust structure, namely designs two exhaust ports and is vented, with satisfied exhaust demand simultaneously.Double-exhaust structure designs the upper and lower sides at cylinder usually, and exhaust angle is equal, and exhaust port size is identical.Though the program can to a certain degree reduce overcompression loss, but still there is following shortcoming:
1, at the end of exhaust, cylinder exhaust side is communicated with rapidly with suction side, for avoiding the gas backstreaming of pump housing outside high pressure, need quick closedown exhaust port, therefore exhaust valve plate need have larger rigidity, and lift of valve plate can not be too high, this just makes valve block unlatching dynamics larger, or because lift is lower, exhaust has some setbacks, still there is larger overcompression loss in compressor;
2, actual exhaust process only needs larger exhaust flow area in the starting stage, and in exhaust end section, the impact that the leaving area increased described in it is compared in the volumetric loss that newly-increased exhaust port brings is larger.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention needs the compression assembly for rotary compressor that a kind of overcompression can alleviated in exhaust process of proposition is lost, can be reduced again clearance volume, improve the operational efficiency of compressor.
The present invention proposes a kind of rotary compressor further.
According to the compression assembly for rotary compressor of the present invention, comprise: cylinder, described cylinder is provided with vane slot, is respectively arranged with intakeport and first row pore in the both sides of described vane slot, and described compression assembly is provided with the first valve block for first row pore described in opening and closing; Piston, described piston is eccentric to be located in described cylinder rotationally; Upper bearing (metal) and lower bearing, described upper bearing (metal) and described lower bearing are located at the top and bottom of described cylinder respectively, described upper bearing (metal) and/or described lower bearing are provided with at least one second row pore, described compression assembly is provided with the second valve block for second row pore described in opening and closing, described second row pore and the projection in the horizontal plane of described first row pore not overlapping, the rigidity of described second valve block is less than the rigidity of described first valve block.
According to the compression assembly for rotary compressor of the present invention, effectively can reduce the overcompression loss of compression assembly, can also clearance volume be reduced, improve the working efficiency of compression assembly.
In addition, also following additional technical feature can be had according to the compression assembly for rotary compressor of the present invention:
In examples more of the present invention, the angle offered of described first row pore be initial position with described vane slot center, along 340 ° ~ 360 ° of described piston sense of rotation between, the angle offered of described second row pore be initial position with described vane slot center, along 220 ° ~ 360 ° of described piston sense of rotation between.
In examples more of the present invention, in described second row pore at least one offer angle be initial position with described vane slot center, along 250 ° ~ 320 ° of described piston sense of rotation between.
In examples more of the present invention, described second row pore is less than the distance of described first row pore apart from the center of described cylinder apart from the distance at the center of described cylinder.
In examples more of the present invention, within the horizontal projection of described second row pore is positioned at described cylinder bore diameter.
In examples more of the present invention, the minimum range of the edge of the horizontal projection of described second row pore and the inner ring of described cylinder is more than or equal to 0.5mm.
In examples more of the present invention, the horizontal projection of described second row pore is arranged in outside the inswept shape of its inner ring of process of described piston rotation.
In examples more of the present invention, in the edge of the horizontal projection of described second row pore and the process of described piston rotation the shape that its inner ring is inswept profile between minimum range be more than or equal to 0.5mm.
In examples more of the present invention, the thickness of described second valve block is less than the thickness of described first valve block; And/or the minimum width of described second valve block is less than the minimum width of described first valve block; And/or the length of described second valve block is greater than the length of described first valve block.
The rotary compressor of embodiment according to a second aspect of the present invention, comprises the above-mentioned compression assembly for rotary compressor.The rotary compressor with above-mentioned compression assembly can reduce the clearance volume of cylinder, reduces overcompression loss, can also increase work efficiency.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the compression assembly for rotary compressor according to the embodiment of the present invention;
Fig. 2 is a sectional view of the compression assembly for rotary compressor according to the embodiment of the present invention;
Fig. 3 is another sectional view of the compression assembly for rotary compressor according to the embodiment of the present invention.
Reference character:
Compression assembly 100;
Cylinder 10; Vane slot 11; Intakeport 12; First row pore 13;
Piston 20; Lower bearing 30; Second row pore 40.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Below with reference to Fig. 1-Fig. 3, the compression assembly 100 for rotary compressor according to the embodiment of the present invention is described.
Cylinder 10, piston 20, upper bearing (metal) (scheming not shown) and lower bearing 30 can be comprised according to the compression assembly 100 for rotary compressor of the embodiment of the present invention.As shown in Figures 2 and 3, cylinder 10 is provided with vane slot 11, intakeport 12 and first row pore 13 is respectively arranged with in the both sides of vane slot 11, compression assembly 100 is provided with the first valve block (scheming not shown) for opening and closing first row pore 13, and piston 20 is eccentric to be located in cylinder 10 rotationally.First valve block can play the effect opening and closing first row pore 13, and when cylinder 10 needs first row pore 13 to be exhausted, the first valve block is opened first row pore 13 and is exhausted to make first row pore 13; Terminate when cylinder 10 is vented, the first valve block closes first row pore 13 gradually to prevent the gaseous coolant backflow after discharging.
Upper bearing (metal) and lower bearing 30 are located at the top and bottom of cylinder 10 respectively, and upper bearing (metal) and/or lower bearing 30 are provided with at least one second row pore 40.Be understandable that, compression assembly 100 comprises first row pore 13 and at least one second row pore 40, and wherein second row pore 40 can be arranged on upper bearing (metal); Or second row pore 40 can be arranged on lower bearing 30, as shown in Figure 1-Figure 3, second row pore 40 is one, and second row pore 40 is arranged on lower bearing 30; Or when second row pore 40 can also be arranged on upper bearing (metal) and lower bearing 30 simultaneously, now, second row pore 40 is multiple, and the second row pore 40 be wherein arranged on upper bearing (metal) can set according to actual conditions with the quantity of the second row pore 40 being arranged on lower bearing 30.And when compression assembly 100 comprises multiple second row pore 40, the internal diameter of second row pore 40 can be identical, but the internal diameter of multiple second row pore 40 also can be different, and the internal diameter of second row pore 40 can adjust as required.
Wherein, compression assembly 100 is provided with the second valve block (scheming not shown) for opening and closing second row pore 40.Second valve block can play the effect opening and closing second row pore 40, and when cylinder 10 needs second row pore 40 to be exhausted, the second valve block is opened second row pore 40 and is exhausted to make second row pore 40; After cylinder 10 exhaust terminates, the second valve block closes second row pore 40 gradually to prevent the gaseous coolant backflow after discharging.By arranging second row pore 40, the exhaust efficiency of compression assembly 100 can be improved, reducing the overcompression loss of compression assembly 100.
Second row pore 40 and first row pore 13 projection in the horizontal plane not overlapping, thus, can reduce to be vented the clearance volume terminated in rear cylinder 10, improve the working efficiency of compression assembly 100.
The rigidity of the second valve block is less than the rigidity of the first valve block.Thus, be more easy to open second row pore 40 relative to the first valve block and first row pore 13, second valve block, thus the overcompression loss of compression assembly 100 can be reduced further.
Thus, according to the compression assembly 100 for rotary compressor of the embodiment of the present invention, effectively can reduce the overcompression loss of compression assembly 100, can also clearance volume be reduced, improve the working efficiency of compression assembly 100.
In examples more of the present invention, the angle offered of first row pore 13 can be initial position with vane slot 11 center, along 340 ° ~ 360 ° of piston 20 sense of rotation between, the angle offered of second row pore 40 can be initial position with vane slot 11 center, along 220 ° ~ 360 ° of piston 20 sense of rotation between.Thus when piston 20 rotation initial by vane slot 11 center, when it turns to the position of contiguous second row pore 40, the second valve block can be impelled first to be opened by second row pore 40, thus be exhausted, thus relative to prior art, can make to be vented first before the first valve block is opened, can exhaust velocity be improved thus, reduce the overcompression loss of compression assembly 100.Preferably, in second row pore 40 at least one offer angle can be initial position with vane slot 11 center, along 250 ° ~ 320 ° of piston 20 sense of rotation between.The second row pore 40 meeting above-mentioned condition can meet compression assembly 100 while being vented the exhaust flow area that in initial procedure, needs are larger, and gaseous coolant discharge path can also be made shorter, and exhaust is very fast, improves the exhaust efficiency of compression assembly 100.
Alternatively, second row pore 40 can be less than the distance of first row pore 13 apart from the center of cylinder 10 apart from the distance at the center of cylinder 10.Such as shown in Fig. 1, within second row pore 40 is arranged on cylinder 10 internal diameter, on the inner circle wall being arranged on cylinder 10 at least partially of first row pore 13, and first row pore 13 is formed with exhaust otch to be exhausted on the inner circle wall of cylinder 10, thus meets second row pore 40 and be less than the distance of first row pore 13 apart from the center of cylinder 10 apart from the distance at the center of cylinder 10.
Further, the minimum range of the edge of the horizontal projection of second row pore 40 and the inner ring of cylinder 10 can be more than or equal to 0.5mm, thus second row pore 40 entirety can be made to be positioned within the inner ring of cylinder 10.When piston 20 rotates in cylinder 10 and second row pore 40 needs to close, piston 20 can cover second row pore 40 at least partially, thus be that the second valve block closedown second row pore 40 provides the time, prevent the generation of gas backstreaming phenomenon at least to a certain extent, ensure the working efficiency of compression assembly 100.
The horizontal projection of second row pore 40 is arranged in outside the inswept shape of the inner ring of the process piston 20 that piston 20 rotates, in the process that the edge of the horizontal projection of second row pore 40 and piston 20 rotate the shape that the inner ring of piston 20 is inswept profile between minimum range can be more than or equal to 0.5mm.When piston 20 rotates in cylinder 10 and second row pore 40 needs to close, piston 20 can cover second row pore 40 at least partially, thus be that the second valve block closedown second row pore 40 provides the time, prevent the generation of gas backstreaming phenomenon at least to a certain extent, ensure the working efficiency of compression assembly 100.
It should be noted that, the minimum range of the edge of the horizontal projection of second row pore 40 and the inner ring of cylinder 10 can be more than or equal to 0.5mm, in the process that the edge of the horizontal projection of second row pore 40 and piston 20 rotate the shape that the inner ring of piston 20 is inswept profile between minimum range can be more than or equal to 0.5mm.Second row pore 40 can meet above-mentioned two conditions simultaneously, thus piston 20 can be made can to cover second row pore 40 completely, second row pore 40 is closed, with external pressure balance in second row pore 40, thus be that the second valve block closedown second row pore 40 provides the time, the generation of the phenomenon of gas backstreaming can be prevented, improve the working efficiency of compression assembly 100.
Alternatively, the thickness of the second valve block is less than the thickness of the first valve block; And/or second the minimum width of valve block be less than the minimum width of the first valve block; And/or second the length of valve block be greater than the length of the first valve block.Be understandable that, second valve block and the first valve block can meet at least one of above-mentioned three conditions, the rigidity meeting the second valve block of at least one condition above-mentioned is less than the rigidity of the first valve block, thus relative to the first valve block, second valve block easily opens second row pore 40, reduce the overcompression loss in exhaust process, improve the working efficiency of compression assembly 100.
In addition, can close the lift of valve plate of second row pore 40, second valve block in time in order to ensure the second valve block corresponding to second row pore 40 can lower than the lift of valve plate of the first valve block corresponding to first row pore 13.
Alternatively, the internal diameter of first row pore 13 can be greater than or equal to the internal diameter of second row pore 40, thus piston 20 can be made to be easy to cover second row pore 40, reduces the possibility that gas is refluxed by second row pore 40.Alternatively, by arranging second row pore 40, the internal diameter of first row pore 13 can be less than the internal diameter of first row pore of the prior art.
According to the rotary compressor of the embodiment of the present invention, comprise the compression assembly 100 for rotary compressor of above-described embodiment.The rotary compressor with the compression assembly 100 of above-described embodiment can reduce the clearance volume of cylinder 10, reduces overcompression loss, can also increase work efficiency.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. for a compression assembly for rotary compressor, it is characterized in that, comprising:
Cylinder, described cylinder is provided with vane slot, is respectively arranged with intakeport and first row pore in the both sides of described vane slot, and described compression assembly is provided with the first valve block for first row pore described in opening and closing;
Piston, described piston is eccentric to be located in described cylinder rotationally;
Upper bearing (metal) and lower bearing, described upper bearing (metal) and described lower bearing are located at the top and bottom of described cylinder respectively, described upper bearing (metal) and/or described lower bearing are provided with at least one second row pore, described compression assembly is provided with the second valve block for second row pore described in opening and closing, described second row pore and the projection in the horizontal plane of described first row pore not overlapping, the rigidity of described second valve block is less than the rigidity of described first valve block.
2. the compression assembly for rotary compressor according to claim 1, it is characterized in that, the angle offered of described first row pore be initial position with described vane slot center, along 340 ° ~ 360 ° of described piston sense of rotation between, the angle offered of described second row pore be initial position with described vane slot center, along 220 ° ~ 360 ° of described piston sense of rotation between.
3. the compression assembly for rotary compressor according to claim 2, it is characterized in that, in described second row pore at least one offer angle be initial position with described vane slot center, along 250 ° ~ 320 ° of described piston sense of rotation between.
4. the compression assembly for rotary compressor according to claim 1, is characterized in that, described second row pore is less than the distance of described first row pore apart from the center of described cylinder apart from the distance at the center of described cylinder.
5. the compression assembly for rotary compressor according to claim 1, is characterized in that, within the horizontal projection of described second row pore is positioned at described cylinder bore diameter.
6. the compression assembly for rotary compressor according to claim 5, is characterized in that, the minimum range of the edge of the horizontal projection of described second row pore and the inner ring of described cylinder is more than or equal to 0.5mm.
7. according to claim 1 or 5 for the compression assembly of rotary compressor, it is characterized in that, the horizontal projection of described second row pore is arranged in outside the inswept shape of its inner ring of process of described piston rotation.
8. the compression assembly for rotary compressor according to claim 7, it is characterized in that, in the edge of the horizontal projection of described second row pore and the process of described piston rotation the shape that its inner ring is inswept profile between minimum range be more than or equal to 0.5mm.
9. the compression assembly for rotary compressor according to claim 1, is characterized in that, the thickness of described second valve block is less than the thickness of described first valve block; And/or
The minimum width of described second valve block is less than the minimum width of described first valve block; And/or
The length of described second valve block is greater than the length of described first valve block.
10. a rotary compressor, is characterized in that, comprises the compression assembly for rotary compressor according to any one of claim 1-9.
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| CN201510416213.7A CN104976128B (en) | 2015-07-15 | 2015-07-15 | Rotary compressor and its compression assembly |
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| CN201510416213.7A CN104976128B (en) | 2015-07-15 | 2015-07-15 | Rotary compressor and its compression assembly |
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Cited By (5)
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| CN105927543A (en) * | 2016-06-29 | 2016-09-07 | 珠海凌达压缩机有限公司 | Upper flange of compressor and compressor comprising upper flange |
| CN106930949A (en) * | 2015-12-30 | 2017-07-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Exhaust valve plate component, flange assembly and compressor |
| CN107387410A (en) * | 2017-07-25 | 2017-11-24 | 珠海格力节能环保制冷技术研究中心有限公司 | The pressure relief of compressor and turn cylinder piston compressor |
| KR20180094412A (en) * | 2017-02-15 | 2018-08-23 | 엘지전자 주식회사 | Rotary compressor |
| CN114183367A (en) * | 2021-12-08 | 2022-03-15 | 珠海凌达压缩机有限公司 | Exhaust structure and compressor of compressor |
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| CN104976128B (en) | 2018-01-23 |
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