CN204941942U - Rotary compressor and compression assembly thereof - Google Patents
Rotary compressor and compression assembly thereof Download PDFInfo
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- CN204941942U CN204941942U CN201520641565.8U CN201520641565U CN204941942U CN 204941942 U CN204941942 U CN 204941942U CN 201520641565 U CN201520641565 U CN 201520641565U CN 204941942 U CN204941942 U CN 204941942U
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- cylinder
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- communicating passage
- rotary compressor
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Abstract
The utility model discloses a kind of rotary compressor and compression assembly thereof.The compression assembly of described rotary compressor, comprising: cylinder; Bearing, described bearing is located at the end of described cylinder; Slide plate, described slide plate is located in described vane slot slidably; Piston, described cylinder chamber is divided into air aspiration cavity and compression chamber with described piston by outer wall that the inner of described slide plate is only against described piston jointly; Communicating passage, described communicating passage is located on described compression assembly, described communicating passage is fixed relative to described cylinder location, and described piston stops described communicating passage to the second place and is communicated with described piston cavity and described compression chamber in the center rotating process of a week of described cylinder-bore, from primary importance.Good according to the compression assembly performance of the rotary compressor of the utility model embodiment, reliability is high.
Description
Technical field
The utility model relates to Compressor Technology field, especially relates to a kind of compression assembly of rotary compressor and has the rotary compressor of this compressor assembly.
Background technique
For the rotary compression in housing being environment under low pressure, oil sump is environment under low pressure, it is also environment under low pressure that the inner chamber of piston is communicated with oil sump, and the compression chamber in cylinder is hyperbaric environment, special in exhaust phase, piston inside and outside differential pressure is very large, causes partial high pressure refrigerant to leak to piston cavity, makes the inner chamber of piston become middle pressure ring border.
The refrigerant leaking into piston cavity can affect bent axle fuel feeding, causes whole pump housing insufficient lubrication.Leak out refrigerant finally to leak in the low-pressure cavity of enclosure interior, be then drawn in air aspiration cavity from suction port, thus cause suction superheat, affect aspirated volume efficiency.
Model utility content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model needs the compression assembly proposing the rotary compressor that a kind of performance is good, reliability is high.
The utility model also needs to propose a kind of rotary compressor with this compression assembly.
According to the compression assembly of the rotary compressor of the utility model first aspect, comprising: cylinder, described cylinder is provided with cylinder-bore, vane slot and suction port; Bearing, described bearing be located at described cylinder end and and jointly limit cylinder chamber between described cylinder-bore; Slide plate, described slide plate is located in described vane slot slidably; Piston, the eccentric part that described piston sleeve is located at bent axle eccentricly around the center of described cylinder-bore is located in described cylinder-bore rotationally, described cylinder chamber is divided into air aspiration cavity and compression chamber with described piston by outer wall that the inner of described slide plate is only against described piston jointly; Communicating passage, described communicating passage is located on described compression assembly, described communicating passage is fixed relative to described cylinder location, described piston stops described communicating passage to the second place and is communicated with described piston cavity and described compression chamber in the center rotating process of a week of described cylinder-bore, from primary importance, wherein when described primary importance, the contact internal walls point of described piston and described cylinder-bore is positioned at the edge away from described vane slot of described suction port, and time from the described second place, the pressure of described compression chamber is greater than the pressure of described piston cavity.
In addition, also following additional technical feature can be had according to the compression assembly of rotary compressor of the present utility model:
According to an embodiment of the present utility model, described communicating passage be formed in described bearing towards the groove on the end face of described cylinder.
According to an embodiment of the present utility model, described bearing comprises: upper bearing (metal) and lower bearing, and described upper bearing (metal) is located at the upper end of described cylinder, and described lower bearing is located at the lower end of described cylinder, and described groove is formed on described upper bearing (metal) and/or lower bearing.
According to an embodiment of the present utility model, described cylinder comprises two, is provided with dividing plate between described two cylinders, and described communicating passage is be formed in the groove on the upper-end surface of described dividing plate and/or lower end surface.
According to an embodiment of the present utility model, described cylinder comprises two, is provided with dividing plate between described two cylinders, and described communicating passage is be formed in the groove on the upper-end surface of described dividing plate and/or lower end surface.
According to an embodiment of the present utility model, in horizontal projection, described communicating passage is positioned at the suction port side of described vane slot center line, and described communicating passage to be distributed in described vane slot centerlines be within the scope of 30 ~ 80 degree.
According to an embodiment of the present utility model, in horizontal projection, described communicating passage is positioned at described cylinder-bore inside.
According to the rotary compressor of the utility model second aspect, comprise the compression assembly of the rotary compressor according to the utility model first aspect.
Because compression assembly has above-mentioned advantage, therefore rotary compressor can be made to have identical advantage by arranging this compression assembly, namely can improve the aspirated volume efficiency of compression assembly thus, therefore can improve reliability and the overall performance of compressor.
Additional aspect of the present utility model 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 utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model 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 of rotary compressor according to the utility model embodiment;
Fig. 2 is the structural representation of the reeded bearing of tool of the compression assembly of rotary compressor according to the utility model embodiment;
Fig. 3-Fig. 6 is the sectional view of the compression assembly of rotary compressor according to the utility model embodiment, which respectively show structural representation when to be positioned at diverse location when piston rotates in cylinder-bore.
Reference character:
Rotary compressor 100;
Compression assembly 10;
Cylinder 1; Cylinder-bore 11; Vane slot 12; Suction port 13; Cylinder chamber 14; Air aspiration cavity 141; Compression chamber 142; Exhaust port 15;
Upper bearing (metal) 21; Lower bearing 22;
Slide plate 3; Piston 4; Piston cavity 41; Groove 5;
Housing 20; Upper shell 201; Middle casing 202; Lower shell body 203;
Electric machine assembly 30; Stator 301; Rotor 302;
Bent axle 40; Eccentric part 401.
Embodiment
Be described below in detail embodiment of the present utility model, 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 utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " orientation or the position relationship of the instruction such as " center ", " clockwise ", " counterclockwise " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.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 description of the present utility model, 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, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Below with reference to Fig. 1-Fig. 6, the compression assembly 10 according to the rotary compressor 100 of the utility model embodiment is described.First it should be noted that, this rotary compressor 100 can be vertical compressor or horizontal compressor, is only described in detail for vertical compressor below for convenience.
As shown in Figure 1, according to the rotary compressor 100 of the utility model embodiment, comprise housing 20, electric machine assembly 30, compression assembly 10 and bent axle 40.
Particularly, housing 20 can comprise upper shell 201, middle casing 202 and lower shell body 203, upper shell 201 and lower shell body 203 are connected to top and the bottom of middle casing 202, and upper shell 201, lower shell body 203 and middle casing 202 jointly limit and seal and cylindrical shell 20 structure of hollow, preferably, middle casing 202 can adopt welding procedure to be integrally fixed structure respectively with upper shell 201 and lower shell body 203.Certainly, the structure of housing 20 is not limited thereto.
Further, electric machine assembly 30 can be located at the top in housing 20, compression assembly 10 to be arranged in housing 20 and to be positioned at the below of electric machine assembly 30, wherein, electric machine assembly 30 can comprise stator 301 and rotor 302, stator 301 can be fixed together with the periphery wall of middle casing 202, rotor 302 can be located in stator 301 rotationally, the upper end of bent axle 40 can be fixed together with rotor 302 hot jacket, thus rotor 302 can driving crank 40 flexing axle 40 central axis rotate, compression assembly 10 is run through in the bottom of bent axle 40, thus the piston 4 in compression assembly 10 can be driven to compress in the process of bent axle 40 rotation.
As shown in Figure 1, compression assembly 10 can comprise: cylinder 1, bearing, slide plate 3, piston 4 and communicating passage, cylinder 1 is provided with cylinder-bore 11, vane slot 12 and suction port 13, bearing can be one also can be two, when bearing is one, bearing can be located at upper end or the lower end of cylinder 1, when bearing is two, two bearings are located at the top and bottom of cylinder 1 respectively, cylinder chamber 14 is jointly limited between bearing and cylinder-bore 11, suction port 13 is communicated with cylinder chamber 14 and for refrigerant air inlet, cylinder 1 can also be provided with the exhaust port 15 for being vented, wherein exhaust port 15 can be formed in the angular cut on cylinder 1.Suction port 13 and exhaust port 15 are respectively formed at the both sides of vane slot 12.
Slide plate 3 is located in vane slot 12 slidably, the eccentric part 401 that piston 4 is set in bent axle 40 eccentricly around the center of cylinder-bore 11 is located in cylinder-bore 11 rotationally, the inner of slide plate 3 is only against in the outer wall of piston 4, and cylinder chamber 14 is divided into air aspiration cavity 141 and compression chamber 142 by slide plate 3 and piston 4 jointly.In the process that piston 4 rotates, refrigerant enters in air aspiration cavity 141 by suction port 13, and in compression chamber 142, the complete cold media air of compression is discharged outside cylinder 1 by exhaust port 15 again.
Wherein, communicating passage is located on compression assembly 10, and communicating passage is fixed relative to cylinder 1 position, alternatively, due to relative fixing between bearing with cylinder 1, so communicating passage can be formed on bearing; Or when compression assembly 10 is multi-cylinder structure, be provided with dividing plate between adjacent cylinder 1, due to relative fixing between dividing plate with cylinder 1, therefore communicating passage also can be formed on the dividing plate of multi-cylinder structure compresses assembly 10.
In embodiment of the present utility model, piston 4 stops communicating passage to the second place and is communicated with piston 4 inner chamber and compression chamber 142 in the center rotating process of a week of cylinder-bore 11, from primary importance, correspondingly, from the second place around the center rotating of cylinder-bore 11 in the process of primary importance, piston 4 inner chamber is not communicated with compression chamber 142.Wherein, as shown in Figure 3, during primary importance, piston 4 and the contact internal walls point of cylinder-bore 11 are positioned at the edge away from vane slot 12 of suction port 13, and time from the second place, the pressure of compression chamber 142 is greater than the pressure of piston 4 inner chamber.
When primary importance, piston 4 is positioned at the edge away from vane slot 12 of suction port 13 with the contact internal walls point of cylinder-bore 11, now air aspiration cavity 141 is spaced apart with compression chamber 142, compression chamber 142 now due to not with suction port 13 and communicating exhaust gas, therefore compression chamber 142 is hedged off from the outer world, and due to when primary importance, suction port 13 is just closed by piston 4, pressure now in compression chamber 142, the pressure of air aspiration cavity 141 is suitable with the low pressure of casing internal, and the pressure of piston 4 inner chamber is formed as intermediate pressure owing to being subject to high-pressure leakage, therefore now piston 4 inner chamber is communicated with compression chamber 142 by communicating passage, part refrigerant can be made, lubricant oil can flow in compression chamber 142 from piston 4 inner chamber by communicating passage, the refrigerant leaked out and lubricant oil can lubricate and seal each friction pair, reduce to leak and improve reliability, and leak refrigerant of coming and can not enter air aspiration cavity 141, do not affect normal suction, rotary compressor 100 also can not produce the phenomenon of suction superheat.When roller is rotated further, refrigerant in compression chamber 142 starts compression, pressure increases gradually, when roller movement is to the second place, compression chamber 142 internal pressure will be greater than the pressure of piston 4 inner chamber, now in order to avoid refrigerant reverse leakage in compression chamber 142 is in piston 4 inner chamber, therefore now due to the rolling of piston 4, make piston 4 inner chamber away from communicating passage, now compression chamber 142 is not communicated with piston 4 inner chamber.The wherein determination of the second place, can calculate according to the concrete structure of the compression assembly 10 of the rotary compressor 100 of different model and experiment.
That is, such as, in the schematic diagram shown in Fig. 3-Fig. 6, such as, in piston 4 eccentric motion process, contact as initial position with piston 4 with the center of vane slot 12, rotate counterclockwise around cylinder 1 center, again contact as final position with the center of vane slot 12 to piston 4, be defined as a rotation period of piston 4.Within this cycle, piston 4 moves to the process of above-mentioned primary importance from initial position, and compression chamber 142 is not communicated with piston 4 inner chamber; When piston 4 moves to the process of the second place from above-mentioned primary importance, compression chamber 142 is communicated with by communicating passage with piston 4 inner chamber, and the refrigerant in piston 4 inner chamber and lubricant oil enter in compression chamber 142 by communicating passage; When piston 4 moves to final position from the above-mentioned second place, compression chamber 142 is not communicated with piston 4 inner chamber.
To sum up, according to the compression assembly 10 of the rotary compressor 100 of the utility model embodiment, by arranging communicating passage, thus can when the pressure of piston 4 inner chamber is greater than the pressure of compression chamber 142, by communicating passage, the part of the refrigerant in piston 4 inner chamber and lubricant oil is transported in compression chamber 142, more lubricant oil can be made thus to penetrate between piston 4 and the end face of bearing, improve the oil sealing effect of piston 4 end face and cylinder 1 inside, and then reduce the impact of leaking air-breathing and bearing feed lubrication system, improve the sealing effect of each friction lubricating, and the aspirated volume efficiency of compression assembly 10 can be improved, therefore reliability and the overall performance of compressor can be improved.
In an embodiment of the present utility model, communicating passage can for be formed in bearing towards the groove 5 on the end face of cylinder 1.Can make communicating passage thus to be shapingly more prone to, easily manufactured.
Alternatively, when bearing is one, this bearing can be located at upper end or the lower end of cylinder 1, groove 5 be formed in this bearing towards on the end face in cylinder 1 direction, form with this structure being communicated with compression chamber 142 and piston 4 inner chamber.
Alternatively, when bearing is two, as shown in Figure 1, bearing comprises: upper bearing (metal) 21 and lower bearing 22, and upper bearing (metal) 21 is located at the upper end of cylinder 1, and lower bearing 22 is located at the lower end of cylinder 1, and groove 5 is formed on upper bearing (metal) 21 and/or lower bearing 22.That is, this groove 5 can only be formed on the lower end surface of upper bearing (metal) 21, or this groove 5 can only be formed on the upper-end surface of lower bearing 22, or the upper-end surface of the lower end surface of upper bearing (metal) 21 and lower bearing 22 is provided with this groove 5 simultaneously, can make the shaping more diversified of groove 5 thus.
In an embodiment of the present utility model, when the cylinder 1 in compression assembly 10 is multiple, such as cylinder 1 comprises two, is provided with dividing plate (scheming not shown) between two cylinders 1, and communicating passage can for being formed in the groove 5 on the upper-end surface of dividing plate and/or lower end surface.That is, groove 5 can be formed on the upper-end surface of dividing plate, and this groove 5 can be communicated with compression chamber 142 and piston 4 inner chamber of the cylinder 1 be arranged in above dividing plate thus; Or this groove 5 can be formed on the lower end surface of dividing plate, this groove 5 can be communicated with compression chamber 142 and piston 4 inner chamber of the cylinder 1 be arranged in below dividing plate thus; Or the upper-end surface of dividing plate and lower end surface are provided with this groove 5, and thus, the compression chamber 142 being arranged in the cylinder 1 above and below dividing plate can be communicated with by groove 5 with corresponding piston 4 inner chamber simultaneously.
It is appreciated of course that for multi-cylinder structure, groove 5 can only be formed on bearing, and groove 5 also can only be formed on dividing plate, or groove 5 can be formed on bearing and dividing plate simultaneously.
In embodiment of the present utility model, in horizontal projection, communicating passage is positioned at suction port 13 side of vane slot 12 center line, and communicating passage to be distributed in vane slot 12 centerlines be within the scope of 30 ~ 80 degree.Compression chamber 142 and piston 4 inner chamber can be made thus can be effectively communicated with between above-mentioned primary importance to the second place.
As shown in figures 3 to 6, in horizontal projection, communicating passage is positioned at cylinder-bore 11 inside.Structure can be made thus more reasonable.It should be noted that, the length, cross-section area etc. of communicating passage can be determined by the concrete structure of compression assembly 10 simultaneously.
According to the rotary compressor 100 of the utility model second aspect embodiment, comprise the compression assembly 10 according to the utility model first aspect rotary compressor 100.Because compression assembly 10 has above-mentioned advantage, therefore rotary compressor 100 can be made to have identical advantage by arranging this compression assembly 10, namely the aspirated volume efficiency of compression assembly 10 be can improve thus, reliability and the overall performance of compressor therefore can be improved.
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 utility model 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 described embodiment of the present utility model, 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 utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (8)
1. a compression assembly for rotary compressor, is characterized in that, comprising:
Cylinder, described cylinder is provided with cylinder-bore, vane slot and suction port;
Bearing, described bearing be located at described cylinder end and and jointly limit cylinder chamber between described cylinder-bore;
Slide plate, described slide plate is located in described vane slot slidably;
Piston, the eccentric part that described piston sleeve is located at bent axle eccentricly around the center of described cylinder-bore is located in described cylinder-bore rotationally, described cylinder chamber is divided into air aspiration cavity and compression chamber with described piston by outer wall that the inner of described slide plate is only against described piston jointly;
Communicating passage, described communicating passage is located on described compression assembly, described communicating passage is fixed relative to described cylinder location, described piston stops described communicating passage to the second place and is communicated with described piston cavity and described compression chamber in the center rotating process of a week of described cylinder-bore, from primary importance
Wherein when described primary importance, the contact internal walls point of described piston and described cylinder-bore is positioned at the edge away from described vane slot of described suction port, and time from the described second place, the pressure of described compression chamber is greater than the pressure of described piston cavity.
2. the compression assembly of rotary compressor according to claim 1, is characterized in that, described communicating passage be formed in described bearing towards the groove on the end face of described cylinder.
3. the compression assembly of rotary compressor according to claim 2, it is characterized in that, described bearing comprises: upper bearing (metal) and lower bearing, described upper bearing (metal) is located at the upper end of described cylinder, described lower bearing is located at the lower end of described cylinder, and described groove is formed on described upper bearing (metal) and/or lower bearing.
4. the compression assembly of rotary compressor according to claim 1, is characterized in that, described cylinder comprises two, is provided with dividing plate between described two cylinders, and described communicating passage is be formed in the groove on the upper-end surface of described dividing plate and/or lower end surface.
5. the compression assembly of rotary compressor according to claim 3, is characterized in that, described cylinder comprises two, is provided with dividing plate between described two cylinders, and described communicating passage is be formed in the groove on the upper-end surface of described dividing plate and/or lower end surface.
6. the compression assembly of rotary compressor according to claim 1, it is characterized in that, in horizontal projection, described communicating passage is positioned at the suction port side of described vane slot center line, and described communicating passage to be distributed in described vane slot centerlines be within the scope of 30 ~ 80 degree.
7. the compression assembly of the rotary compressor according to any one of claim 1-6, is characterized in that, in horizontal projection, described communicating passage is positioned at described cylinder-bore inside.
8. a rotary compressor, is characterized in that, comprises the compression assembly of the rotary compressor according to any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641565.8U CN204941942U (en) | 2015-08-24 | 2015-08-24 | Rotary compressor and compression assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641565.8U CN204941942U (en) | 2015-08-24 | 2015-08-24 | Rotary compressor and compression assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941942U true CN204941942U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520641565.8U Expired - Fee Related CN204941942U (en) | 2015-08-24 | 2015-08-24 | Rotary compressor and compression assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952649A (en) * | 2016-06-17 | 2016-09-21 | 广东美芝制冷设备有限公司 | Compressor |
| CN108005901A (en) * | 2017-12-28 | 2018-05-08 | 广东美的制冷设备有限公司 | Low backpressure rotary compressor |
-
2015
- 2015-08-24 CN CN201520641565.8U patent/CN204941942U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952649A (en) * | 2016-06-17 | 2016-09-21 | 广东美芝制冷设备有限公司 | Compressor |
| CN105952649B (en) * | 2016-06-17 | 2018-03-23 | 广东美芝制冷设备有限公司 | Compressor |
| CN108005901A (en) * | 2017-12-28 | 2018-05-08 | 广东美的制冷设备有限公司 | Low backpressure rotary compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |