CN203614416U - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
- Publication number
- CN203614416U CN203614416U CN201320656269.6U CN201320656269U CN203614416U CN 203614416 U CN203614416 U CN 203614416U CN 201320656269 U CN201320656269 U CN 201320656269U CN 203614416 U CN203614416 U CN 203614416U
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- pipeline section
- ejector
- main bearing
- rotary compressor
- stator
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Abstract
The utility model provides a rotary compressor which comprises a casing, a motor assembly, a pump body assembly and an ejector, wherein the motor assembly comprises a stator and a rotor arranged in the stator, and an oil return channel penetrating through the stator in the vertical direction is formed in the stator; the pump body assembly is arranged in the casing and arranged below the motor assembly; the pump body assembly comprises a cylinder, a main bearing arranged on the cylinder and a main bearing muffler arranged on the main bearing, and an exhaust port is formed in the main bearing muffler; and the ejector comprises an ejection pipe section and a drainage pipe section, the first end of the drainage pipe section is communicated with the ejection pipe section, the first end of the ejection pipe section is connected with the exhaust port, the second end of the ejection pipe section is opposite to the lower surface of the motor assembly, and the second end of the drainage pipe section is connected with the first end of the oil return pipe channel. According to the rotary compressor, the structure is simple, and stockpiling of refrigerating machine oil on the upper end surface of the stator of the motor assembly can be reduced.
Description
Technical field
The utility model relates to refrigeration technology field, particularly relates to a kind of rotary compressor.
Background technique
Conventional closed rotary compressor forms closed type space by upper shell, main casing, lower shell body haply, is accommodated with the motor portion being made up of with rotor assembly stator module and the pump housing portion being connected with motor portion by rotary crankshaft in this confined space.When compressor operation, rotor assembly rotates, and band dynamic crankshaft rotates.By the rotation of bent axle, pump housing portion can realize the compressed action to cold media air.Pump housing portion except bent axle, be enclosed within addition main bearing on bent axle major axis, be positioned at main bearing top main bearing baffler, be positioned at main bearing flanged surface below cylinder, be positioned at cylinder bore diameter scope and be enclosed within rolling piston in crankshaft eccentric portion, be positioned at cylinder bottom supplementary bearing, be positioned at the compositions such as supplementary bearing baffler below supplementary bearing.
After compressor bank installs into and encloses refrigerator oil, lower shells of compressors inside there will be an oil sump, and pump housing portion major part is immersed in wherein, and the largest static height of oil sump pasta can be mutually concordant with the top planes of main bearing baffler.
Some arc areas that the distribution channel of rolling rotor type compressor cold media air and refrigerator oil mixed gas is mainly made up of the axial vent on electric machine rotor gap, rotor, stator trimming and main casing internal diameter etc. form.Conventionally rolling rotor type compressor designs for high back pressure, and the pressure of motor lower portion cavity (part between main bearing and stator iron core lower end surface) is greater than the pressure of motor upper cavity (part between stator upper-end surface and upper shell internal surface).After compressor start, a large amount of refrigerator oils is carried to stator iron core upper space by the high speed cold media air of discharging from main bearing baffler via above-mentioned passage.In the time that circulation passage entirety is too small, for example, when stator trimming is too small, in the arc area that stator trimming and main casing internal diameter form, flow velocity is upwards higher, make the refrigerator oil that is flowed to this arc area by stator iron core upper-end surface cannot return in time compressor lower space, therefore can cause refrigerator oil accumulating in stator iron core upper-end surface.When compressor stable operation, this pasta can maintain a dynamic balance height, and fuel head can change along with compression ratio, operation frequency etc.
Refrigerator oil accumulates in a large number motor stator core top.Not only can cause the OCR of compressor excessive, also can make the pasta of compressor bottom oil sump too low, thereby can not effectively lubricate the each kinematic pair of press part, cause the increase of parts abrasion, finally have influence on the reliability of compressor.
Model utility content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, an object of the present utility model is to propose a kind of simple in structure, can reduce the rotary compressor that the refrigerator oil of the upper-end surface of the stator of electric machine assembly accumulates.
According to rotary compressor of the present utility model, comprising: housing; Electric machine assembly, described electric machine assembly comprises stator and is located at the rotor in described stator, wherein, has the drainback passage that connects along the vertical direction described stator on described stator; Pump assembly, described pump assembly is located at below described electric machine assembly in described housing, described pump assembly comprises cylinder, is located at the main bearing above described cylinder and is located at the main bearing baffler above described main bearing, wherein, on described main bearing baffler, has relief opening; And ejector, described ejector comprises the drainage pipeline section that injection pipeline section and first end are communicated with described injection pipeline section, wherein, the first end of described injection pipeline section is connected with described relief opening and the second end of described injection pipeline section is relative with the lower surface of described electric machine assembly, and the second end of described drainage pipeline section is connected with the first end of described drainback passage.
According to rotary compressor of the present utility model, on stator, there is the drainback passage that connects along the vertical direction stator, on main bearing baffler, there is relief opening, by ejector, the upper-end surface of stator is communicated with main bearing baffler, using the high-voltage high-speed gas of main bearing baffler exhaust ports as working medium, using the freezing long-pending oil of stator iron upper-end surface as by injection medium, utilize ejector action that swiftly flowing working medium produces by the long-pending oily injection of stator upper-end surface the lower cavity to electric machine assembly, thereby reach the object of improving stator upper end area oil and reducing OCR.
In addition, can also there is following additional technical characteristics according to the rotary compressor of the utility model above-described embodiment:
According to an example of the present utility model, described rotary compressor also comprises return tube, and the second end of described return tube is connected with the first end of described drainback passage and the first end of described return tube and the second end of described drainage pipeline section are connected.
According to an example of the present utility model, the second end of the injection pipeline section of described ejector is configured to round table-like.
According to an example of the present utility model, the first end of the drainage pipeline section of described ejector is configured to the predetermined angle that is inclined upwardly.
According to an example of the present utility model, the drainage pipeline section of described ejector is configured to arc pipe, and the bottom of described arc pipe is provided with spill port.
According to an example of the present utility model, described ejector is welded on described main bearing baffler.
According to an example of the present utility model, on the outer circumferential face of the first end of the injection pipeline section of described ejector, there is outside thread, on the inner circle wall of the relief opening of described main bearing baffler, have the internal thread suitable with described outside thread, described ejector is connected with described main bearing baffler screw thread.
According to an example of the present utility model, described ejector and described main bearing baffler integrally casting are shaped.
According to an example of the present utility model, described ejector is T tube.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming embodiment's description obviously and easily, wherein:
Fig. 1 is according to the schematic diagram of an embodiment's of the utility model rotary compressor;
Fig. 2 is the local enlarged diagram of A in Fig. 1;
Fig. 3 is a kind of schematic diagram according to the ejector of another embodiment's of the utility model rotary compressor;
Fig. 4 is another schematic diagram according to the ejector of another embodiment's of the utility model rotary compressor.
Embodiment
Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment who is described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " 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 indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is less than Second Characteristic.
Describe in detail according to rotary compressor of the present utility model below with reference to accompanying drawing.
As shown in Figures 1 to 4, according to rotary compressor of the present utility model, comprising: housing 10, electric machine assembly 20, pump assembly 30 and ejector 40.
Specifically, electric machine assembly 20 comprises stator 21 and is located at the rotor 22 in stator 21.Wherein, on stator 21, have along upper and lower (as shown in Figure 1 the upper and lower indicated direction of arrow) direction and connect the drainback passage 211 of stator 21.
Pump assembly 30 in housing 10, be located at electric machine assembly 20 under (as shown in Figure 1 arrow under indicated direction) face.Pump assembly 30 comprises cylinder 31, is located at the main bearing 32 above cylinder 31 and is located at main bearing 32 main bearing baffler 33 above.Wherein, on main bearing baffler 33, there is relief opening 331.
As shown in Figure 3, ejector 40 comprises and sprays the drainage pipeline section 42 that pipeline section 41 and first end (as shown in Figure 3 the right-hand member of drainage pipeline section 42) are communicated with injection pipeline section 41.Wherein, the first end (spraying as shown in Figure 3 the lower end of pipeline section 41) of injection pipeline section 41 is connected with relief opening 331 and sprays second end (spraying as shown in Figure 3 the upper end of pipeline section 41) of pipeline section 41 relative with the lower surface of electric machine assembly 20 (the second end that sprays pipeline section 41 is positioned at the cavity that housing 10, electric machine assembly 20 and pump assembly 30 limit).The first end of the second end of drainage pipeline section 42 (as shown in Figure 3 the left end of drainage pipeline section 42) and drainback passage 211 (as shown in Figure 1 the lower end of drainback passage) is connected.
Advantageously, as depicted in figs. 1 and 2, according to an example of the present utility model, described rotary compressor also comprises return tube 50.The second end of return tube 50 (as shown in Figure 2 the upper end of return tube 50) is connected with the first end of drainback passage 211 and the first end of return tube 50 (as shown in Figure 2 the lower end of return tube 50) is connected with the second end of drainage pipeline section 42.
According to rotary compressor of the present utility model, on stator, there is the drainback passage that connects along the vertical direction stator, on main bearing baffler, there is relief opening, by ejector, the upper-end surface of stator is communicated with main bearing baffler, using the high-voltage high-speed gas of main bearing baffler exhaust ports as working medium, using the freezing long-pending oil of stator iron upper-end surface as by injection medium, utilize ejector action that swiftly flowing working medium produces by the long-pending oily injection of stator upper-end surface the lower cavity to electric machine assembly, thereby reach the object of improving stator upper end area oil and reducing OCR.
It should be noted that at this, Fig. 1 shows according to an embodiment's of the utility model rotary compressor.In description above, the left end of drainage pipeline section 42 and right-hand member are indicated for convenience, and should not be construed as restriction of the present utility model.For example, take the residing state of the rotary compressor shown in Fig. 1 as original state, then around the central axis of stator, rotary compressor is clockwise rotated to 90 °, now, the first end of drainage pipeline section 42 is one end outside perpendicular to paper, and the second end of drainage pipeline section 42 is one end inside perpendicular to paper.And around the central axis of stator, rotary compressor is rotated to 180 °, and now, the first end of drainage pipeline section 42 is left end, the second end of drainage pipeline section 42 is right-hand member, does the result obtaining after a mirror image by Fig. 1.This is understandable to those skilled in the art.
As shown in Figure 3 and Figure 4, according to an example of the present utility model, ejector 40 is roughly T tube., spray pipeline section 41 arrange along the vertical direction and drainage pipeline section 42 along left and right directions setting.
Advantageously, the second end of the injection pipeline section 41 of ejector 40 is configured to round table-like.Thus, can reduce the cold media air of discharging from ejector 40 and the flow velocity of refrigerator oil mixture.
Advantageously, the first end of the drainage pipeline section 42 of ejector 40 is configured to the predetermined angle that is inclined upwardly.Thus, in the time that the long-pending oil of stator 21 upper-end surfaces is drained on ejector 40, can change this part long-pending oily flow direction, thereby obtain an acclivitous initial velocity at the first end of drainage pipeline section 42, reduce the impact on spraying the fluid in pipeline section 41.
Further, as shown in Figure 4, the drainage pipeline section 42 of ejector 40 is configured to arc pipe, and the bottom of described arc pipe is provided with spill port 421.In other words, its lowest position at the arc drainage pipeline section 42 of ejector 40 offers spill port 421, the refrigerator oil entering in drainage pipeline section 42 that can make is discharged ejector 40 in time, thereby the oil content that has finally reduced the cold media air ejecting from the upper end of the injection pipeline section 41 of ejector 40, is conducive to the reduction of OCR.
Mounting type about ejector is not particularly limited.For example, according to an example of the present utility model, ejector 40 can be welded on main bearing baffler 33.Ejector 40 can also be connected with main bearing baffler 33 screw threads.That is, on the outer circumferential face of the first end of the injection pipeline section 41 of ejector 40, there is outside thread, on the inner circle wall of the relief opening 331 of main bearing baffler 33, there is the internal thread suitable with described outside thread.Ejector 40 can also be shaped with main bearing baffler 33 integrally castings.This is understandable to those skilled in the art.
According to rotary compressor of the present utility model, on rotor, opening hole with traditional relying on compares with the method that increases flow area, due to the employing of ejector, change the stressing conditions of refrigerator oil, both the brush effect of the mixed gas that had reduced upwards mobile refrigerant and refrigerator oil to the refrigerator oil flowing downward, increased again a downward drainage power, the refrigerator oil that therefore can effectively reduce stator top accumulates simultaneously.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiments or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, modification, replacement and modification.
Claims (9)
1. a rotary compressor, is characterized in that, comprising:
Housing;
Electric machine assembly, described electric machine assembly comprises stator and is located at the rotor in described stator, wherein, has the drainback passage that connects along the vertical direction described stator on described stator;
Pump assembly, described pump assembly is located at below described electric machine assembly in described housing, described pump assembly comprises cylinder, is located at the main bearing above described cylinder and is located at the main bearing baffler above described main bearing, wherein, on described main bearing baffler, has relief opening; With
Ejector, described ejector comprises the drainage pipeline section that injection pipeline section and first end are communicated with described injection pipeline section, wherein, the first end of described injection pipeline section is connected with described relief opening and the second end of described injection pipeline section is relative with the lower surface of described electric machine assembly, and the second end of described drainage pipeline section is connected with the first end of described drainback passage.
2. rotary compressor according to claim 1, is characterized in that, also comprises return tube, and the second end of described return tube is connected with the first end of described drainback passage and the first end of described return tube and the second end of described drainage pipeline section are connected.
3. rotary compressor according to claim 2, is characterized in that, the second end of the injection pipeline section of described ejector is configured to round table-like.
4. rotary compressor according to claim 2, is characterized in that, the first end of the drainage pipeline section of described ejector is configured to the predetermined angle that is inclined upwardly.
5. rotary compressor according to claim 4, is characterized in that, the drainage pipeline section of described ejector is configured to arc pipe, and the bottom of described arc pipe is provided with spill port.
6. according to the rotary compressor described in any one in claim 1-5, it is characterized in that, described ejector is welded on described main bearing baffler.
7. according to the rotary compressor described in any one in claim 1-5, it is characterized in that, on the outer circumferential face of the first end of the injection pipeline section of described ejector, there is outside thread, on the inner circle wall of the relief opening of described main bearing baffler, have the internal thread suitable with described outside thread, described ejector is connected with described main bearing baffler screw thread.
8. according to the rotary compressor described in any one in claim 1-5, it is characterized in that, described ejector and described main bearing baffler integrally casting are shaped.
9. according to the rotary compressor described in any one in claim 1-5, it is characterized in that, described ejector is T tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656269.6U CN203614416U (en) | 2013-10-22 | 2013-10-22 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656269.6U CN203614416U (en) | 2013-10-22 | 2013-10-22 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614416U true CN203614416U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320656269.6U Expired - Lifetime CN203614416U (en) | 2013-10-22 | 2013-10-22 | Rotary compressor |
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| Country | Link |
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| CN (1) | CN203614416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557162A (en) * | 2013-10-22 | 2014-02-05 | 广东美芝制冷设备有限公司 | Rotary compressor |
-
2013
- 2013-10-22 CN CN201320656269.6U patent/CN203614416U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557162A (en) * | 2013-10-22 | 2014-02-05 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN103557162B (en) * | 2013-10-22 | 2017-01-25 | 广东美芝制冷设备有限公司 | Rotary compressor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |