CN102953999A - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN102953999A CN102953999A CN 201110248082 CN201110248082A CN102953999A CN 102953999 A CN102953999 A CN 102953999A CN 201110248082 CN201110248082 CN 201110248082 CN 201110248082 A CN201110248082 A CN 201110248082A CN 102953999 A CN102953999 A CN 102953999A
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Abstract
The invention discloses a rotary compressor comprising an electric structure part and a compression structure part, wherein the compression structure part comprises a round cylinder, an upper bearing, a lower bearing, a baffle plate slidedly arranged in a baffle plate groove and dividing the cylinder into an inhaling space and a compression space, and an oil pump fixedly arranged in a compressor, wherein the upper bearing is provided with a central through hole communicated with the upper bearing and an oil inlet and an oil outlet on a lateral wall at intervals along an radial direction thereof, and oil inlet is communicated with a oil pump pipeline so that the oil pump can provide oil for the oil inlet of the upper bearing. According to the compressor provided by the invention, while a crankshaft splashes oil to lubricate, the oil pump is forced to supply oil and lubricate the upper bearing. By using the oil pump, a bad lubrication caused by that the crankshaft cannot absorb the oil due to reduced liquid level can be effectively prevented; meanwhile, the oil inlet and the oil outlet are matchedly arranged at a contact position of the crankshaft and a rolling ring, so as to effectively prevent the situation that the lubrication oil cannot flow back at this position, and improve utilization rate of the lubricating oil.
Description
Technical field
The present invention relates to compressor field, particularly relate to a kind of rotary compressor.
Background technique
Usually at eccentric rotary-piston in conjunction with compression structure part on bent axle that electric structure section is combined, rotary-piston is rotated motion to the rotary compressor that is applicable to air conditioner etc. in the compression volume of circular cylinder, thus suction, compression and discharging refrigerant.
The structure of existing rotary compressor as shown in Figure 1, its electric structure section comprises: stator 2, rotor 3 and bent axle 4.Stator 2 and rotor 3 are arranged on the inside of casing 1, and the center of rotor 3 is pressed into and is installed on the bent axle 4, and the bottom of bent axle 4 arranges the compression structure part of suction, compression refrigeration gas.Described compression structure part comprises: the circular cylinder 5 that is fixedly installed on casing 1 inner peripheral surface; The upper and lower bi-side while bent axle 4 that is close to cylinder 5 connects wherein and supported upper bearing (metal) 6A and lower bearing 6B; Be arranged on the eccentric part 4A of bent axle 4, under the effect of bent axle 4, encircle 7 rolling of cylinder 5 interior eccentric rotaries; One side pressure is connected on the outer circumferential face that rolls ring 7, the other end contacts with baffle plate spring (not shown), and rolling that ring 7 is rotated that when motion done straight line motion cylinder 5 is divided into the baffle plate 11 of breathing space and compression volume and is arranged on a side of casing 1 and is connected to gas-liquid separator 10 on the suction port of cylinder 5.
The working procedure of above-mentioned existing rotary compressor is as follows:
Give stator 2 power supplies, make rotor 3 in the inner rotation of stator 2, meanwhile bent axle 4 rotates and makes and roll ring 7 at cylinder 5 interior eccentric rotaries, along with the eccentric rotary that rolls ring 7, refrigeration agent is inhaled into the breathing space of cylinder 5, and continue to be compressed to certain pressure, when the pressure in the compression volume of cylinder 5 surpasses critical pressure, the drain tap 8 that is installed on the relief opening of upper bearing (metal) 6A is opened, pressurized gas drains in the casing 1 from compression volume, the gas of discharging enters into the top of rotary compressor by the slit between the slit between casing 1 and the stator 2 or stator 2 and the rotor 3, then passes through gas outlet pipe DP and is discharged to the circulating frozen system.
But, existing rotary compressor has following shortcoming: existing compressor crank shaft is to get rid of into the cooperation place of rolling ring and bent axle by the oilhole that gets rid of on the bent axle with rolling lubricated between the ring, but because the impact of sealing in the cylinder, throw away the fluid that comes and to form normal way to cycle oil inflow oil sump, thereby whole lubrication effect reduces, and also there is the fuel feeding problem in the baffle plate in the cylinder.Especially situation is more serious under the state of running up, baffle plate serious wear during long-time running, and input work and leakage also increase thereupon, and EER reduces.
Summary of the invention
The object of the present invention is to provide and a kind ofly can effectively strengthen bent axle and roll the lubricating structure that lubrication effect between ring, baffle plate and the cylinder guarantees rapid oil return.
To achieve these goals, technological scheme of the present invention is as follows:
A kind of rotary compressor, comprise electric structure section and compression structure part, described compression structure part comprises circular cylinder, be close to the upper of cylinder, lower bi-side simultaneously bent axle connect wherein and supported upper bearing (metal) and lower bearing, be slidingly arranged in the baffle plate groove and cylinder be divided into the baffle plate of breathing space and compression volume, it also comprises the oil pump that is fixedly installed on compressor inside, described upper bearing (metal) along its spaced radial offer oil inlet hole and the oil drainage hole that is communicated with upper bearing (metal) through hole and outer side wall, described oil inlet hole is communicated with by the road to realize that with oil pump it is to the oil inlet hole fuel feeding of upper bearing (metal).
Preferably, for realizing that the profit of baffle plate is changed improvement, described oil drainage hole or oil inlet hole are through the baffle plate top, lubrication hole is communicated with oil drainage hole or oil inlet hole with the lower surface of upper bearing (metal), compressor after the assembling is in when work, through the oil of lubrication hole can be fully to oiling between baffle plate and baffle plate groove, metal (upper, improve its lubrication effect and oil sealing effect, improve the sealing of cylinder, improve the whole efficiency of compressor.
Compressor of the present invention, when bent axle gets rid of oil lubrication, increasing oil pump forces upper axle for oil lubrication, adopt oil pump, can effectively avoid liquid level to reduce the insufficient lubrication that bent axle can't oil suction causes, simultaneously bent axle is adopted oil inlet hole and the supporting setting of oil drainage hole with rolling the articulating synapsis, the situation of effectively avoiding this place's lubricant oil to reflux, the utilization ratio of raising lubricant oil.Compressor be in operation lubricant oil along crankshaft hole constantly be brought to the upper end and via get rid of oilhole to bent axle with roll interannular and be lubricated, and oil pump of the present invention is worked simultaneously, certainly, for frequency-changeable compressor, also can adopt at high frequency time side startup oil pump, to reduce energy consumption, oil pump with the oil in the oil sump via pipeline for to the oil inlet hole of upper bearing (metal), the oil that enters in the through hole can be with the through hole of bent axle and upper bearing (metal), bent axle with roll the ring sufficient lubrication, unnecessary oil is discharged from oil drainage hole, but the downward lubrication baffle in oil selflubricating hole in the process of discharging, improve lubricated and sealing effect between the two, gap between baffle plate and the baffle plate groove is the main leakage of compressor, guarantees that the good lubrication and seal effect in this gap not only can play seal action but also can effectively reduce friction, is the important channel of improving EER.Simultaneously can also guarantee baffle plate and roll oil seal between the ring, further improve EER.
Description of drawings
Fig. 1 is the longitudinal sectional drawing of existing rotary compressor;
Fig. 2 is compressor upper bearing (metal) perspective view of the present invention;
Fig. 3 is upper bearing structure worm's eye view of the present invention;
Fig. 4 is the schematic cross-section of upper bearing (metal) shown in Figure 3.
Embodiment
Be elaborated below in conjunction with the structure of accompanying drawing to rotary compressor of the present invention.
Rotary compressor of the present invention comprises electric structure section and compression structure part, electric structure section comprises stator and the rotor that is fixedly installed in the casing, described stator both sides and casing inner wall form two crescent shape oil return cracks, the center of rotor is pressed into and is installed on the bent axle, and the bottom of bent axle is provided with compression structure part.Described compression structure part comprises: the circular cylinder that is fixedly installed on the casing inner peripheral surface, the upper and lower bi-side while bent axle that is close to cylinder connects wherein and supported upper bearing (metal) 60 and lower bearing, be arranged on the eccentric part of bent axle, under the effect of bent axle in cylinder eccentric rotary arrange in the baffle plate groove with rolling ring and slidable sealing and a side pressure is connected on the outer circumferential face that rolls ring, the other end contacts with baffle plate spring (not shown), and is rolling the baffle plate of doing straight line motion when ring is rotated motion and cylinder being divided into breathing space and compression volume.
For improving lubrication effect of the present invention, the present invention adopts oil pump to carry out forced feed lubrication, and described oil pump is fixedly installed on the compressor bottom, and its means of fixation and structure be existing the application in the prior art, do not repeat them here.The present invention adopts the oil pump (not shown) that is fixedly installed on the compressor inner bottom part that the oil in the oil sump of bottom directly is evacuated to upper bearing (metal), shown in Fig. 2-4, upper bearing (metal) 60 of the present invention along its spaced radial offer oil inlet hole 62 and the oil drainage hole 61 that is communicated with upper bearing (metal) through hole 65 and outer side wall, because Fig. 3 is the worm's eye view of upper bearing (metal) of the present invention, oil inlet hole and oil drainage hole carry out station location marker with dotted line.Wherein, described oil inlet hole 62 and oil drainage hole 61 outer ends all are arranged on oil-return groove 64 places of upper bearing (metal), the smooth and easy discharge when being connected with oil extraction with the pipeline of oil pump with convenience.Described oil-return groove is the groove that is formed on the upper bearing (metal) side, so that the oil that is got rid of to top refluxes.
Wherein, described oil drainage hole 61 is through the baffle plate top, specifically, that oil drainage hole entered the baffle plate top after assembling, it can be that oil drainage hole and baffle plate arrange abreast or intersect with the baffle plate travel track, by the lubrication hole 63 of axially offering along upper bearing (metal) the lower surface of oil drainage hole 61 with upper bearing (metal) 60 is communicated with, namely, oil can be lubricated via 63 pairs of baffle plates that arrange under it of lubrication hole in oil drainage hole 61 discharge processes, because the to-and-fro motion of baffle plate, can with baffle plate and baffle plate groove sufficient lubrication, reduce friction between the two.Preferably, the position of described lubrication hole is with respect to the close center in middle part or middle part of baffle plate groove, to optimize baffle plate and baffle plate groove and baffle plate and to roll lubricating and sealing effect of interannular.
Preferably, for avoiding oil inlet hole, oil drainage hole and lubrication hole on the impact of cylinder pressurization ratio, the diameter in described hole is generally less than 1mm, like this, under the oil pump effect, keeps higher oil pressure in the hole, can effectively prevent because oilhole is offered the impact on seal.
Further, for improving the fluency of its oil-feed and oil extraction, described oil inlet hole and oil drainage hole all arrange in one plane, and the smoothness of oil-feed, oil extraction guarantees that the circulation of oil is smooth and easy, can effectively be lubricated multiple spot, improves the overall performance of compressor.
For reducing difficulty of processing, described oil inlet hole and oil drainage hole all are arranged near upper bearing (metal) lower surface place, in proof strength oilhole are arranged near the lower surface place, can effectively reduce its difficulty of processing.
Like this, compressor be in operation lubricant oil along crankshaft hole constantly be brought to the upper end and via get rid of oilhole to bent axle with roll interannular and be lubricated, and oil pump of the present invention is worked simultaneously, certainly, for frequency-changeable compressor, also can adopt at high frequency time side startup oil pump, to reduce energy consumption, oil pump with the oil in the oil sump via pipeline for to the oil inlet hole of upper bearing (metal), the oil that enters in the through hole can be with the through hole of bent axle and upper bearing (metal), bent axle with roll the ring sufficient lubrication, unnecessary oil is discharged from oil drainage hole, but the downward lubrication baffle in oil selflubricating hole in the process of discharging improves lubricated and sealing effect between the two, and the gap between baffle plate and the baffle plate groove is the main leakage of compressor, guaranteeing that the good lubrication and seal effect in this gap not only can play seal action but also can effectively reduce friction, is the important channel of improving EER.Simultaneously can also guarantee baffle plate and roll oil seal between the ring, further improve EER.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. rotary compressor, comprise electric structure section and compression structure part, described compression structure part comprises circular cylinder, be close to the upper of cylinder, lower bi-side simultaneously bent axle connect wherein and supported upper bearing (metal) and lower bearing, be slidingly arranged in the baffle plate groove and cylinder be divided into the baffle plate of breathing space and compression volume, it is characterized in that: it also comprises the oil pump that is fixedly installed on compressor inside, described upper bearing (metal) along its spaced radial offer oil inlet hole and the oil drainage hole that is communicated with upper bearing (metal) through hole and outer side wall, described oil inlet hole is communicated with by the road to realize that with oil pump it is to the fuel feeding of upper bearing (metal) oil inlet hole.
2. rotary compressor as claimed in claim 1, it is characterized in that: described oil inlet hole and oil drainage hole outer end all are arranged on the oil-return groove place of upper bearing (metal).
3. rotary compressor as claimed in claim 2, it is characterized in that: the diameter in described hole is less than 1mm.
4. rotary compressor as claimed in claim 2 is characterized in that: described oil inlet hole and oil drainage hole all are arranged near upper bearing (metal) lower surface place.
5. such as each described rotary compressor of claim 1-4, it is characterized in that: described oil drainage hole is communicated with oil drainage hole along the axially extended lubrication hole of upper bearing (metal) through the baffle plate top with the lower surface of upper bearing (metal).
6. such as each described rotary compressor of claim 1-4, it is characterized in that: described oil inlet hole is communicated with oil inlet hole along the axially extended lubrication hole of upper bearing (metal) through the baffle plate top with the lower surface of upper bearing (metal).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110248082 CN102953999A (en) | 2011-08-26 | 2011-08-26 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110248082 CN102953999A (en) | 2011-08-26 | 2011-08-26 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102953999A true CN102953999A (en) | 2013-03-06 |
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ID=47763249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110248082 Pending CN102953999A (en) | 2011-08-26 | 2011-08-26 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102953999A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782053A (en) * | 2014-12-24 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN111828326A (en) * | 2020-06-30 | 2020-10-27 | 广东美芝精密制造有限公司 | Compressor and refrigerating device |
-
2011
- 2011-08-26 CN CN 201110248082 patent/CN102953999A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782053A (en) * | 2014-12-24 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN105782053B (en) * | 2014-12-24 | 2018-12-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN111828326A (en) * | 2020-06-30 | 2020-10-27 | 广东美芝精密制造有限公司 | Compressor and refrigerating device |
| CN111828326B (en) * | 2020-06-30 | 2022-03-01 | 广东美芝精密制造有限公司 | Compressor and refrigerating device |
| US11971036B2 (en) | 2020-06-30 | 2024-04-30 | Guangdong Meizhi Precision-Manufacturing Co., Ltd. | Compressor and refrigeration device with an oil return channel having a first relative distance to an inner-side wall |
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Application publication date: 20130306 |