CN206708022U - A kind of rotor-type compressor oil suction structure - Google Patents
A kind of rotor-type compressor oil suction structure Download PDFInfo
- Publication number
- CN206708022U CN206708022U CN201720414452.3U CN201720414452U CN206708022U CN 206708022 U CN206708022 U CN 206708022U CN 201720414452 U CN201720414452 U CN 201720414452U CN 206708022 U CN206708022 U CN 206708022U
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- sucking pipe
- fuel sucking
- bent axle
- oil suction
- rotor
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Abstract
The utility model discloses a kind of rotor-type compressor oil suction structure, including housing and the bent axle and fuel sucking pipe that are installed in housing；The bottom of housing is formed with oil sump；Bent axle includes the short axle coordinated with lower bearing, and fuel sucking pipe interference fit is fixed in the short axle of bent axle；The oil suction spout part of fuel sucking pipe is located at close to one end of oil sump bottom.The utility model is fixed on bent axle by fuel sucking pipe interference fit, fuel sucking pipe and bent axle short axle lengthens to adapt to oil sump depth；Mutually rationally coordinated by oil suction length of tube, bent axle short axle length of fit and oil sump, solve the technical barrier that existing rotor-type compressor oil suction construction design method can not meet requirement of the lubrication to fuel head during big lubricating oil charging amount and high-speed cruising, reached the purpose that rotor-type compressor reliably uses on direct current varied-frequency air conditioner.
Description
Technical field
Technical field of refrigeration compressors is the utility model is related to, more particularly to a kind of rotor-type compressor oil suction structure.
Background technology
In family expenses air conditioning applications field, with the expansion applied to DC Frequency Conversion Technology, the use to rotor-type compressor
It is required that also improve constantly.Compared with conventional air-conditioner with fixed frequency, the volume of the heat exchanger of direct current varied-frequency air conditioner is larger, and refrigerant charges
Amount is also larger.Because the oil in air conditioner and the ratio between refrigerant can not typically be less than 0.40, when the refrigerant filling quantity in air conditioner compared with
When big, it is desirable to there is injection flow adaptable therewith to ensure the normal use of compressor.In general, injection flow inside compressor
Requirement be：After having filled, static pasta highest is not above upper silencer cover vent position；During operating, pasta is minimum can not
Less than lower bearing bottom.For direct current varied-frequency air conditioner, because refrigerant filling quantity is big so that injection flow also greatly increases, former
Space is limited in some compression case bodies, can not accommodate required injection flow sometimes.
In DC frequency-changeable compressor, the oil absorption of compressor oil suction structure improves with the raising of rotating speed.At a high speed
During operating, because oil suction structure oil absorption is very strong, it will cause fuel head in oil sump too low, lubricating reliability can be produced
Influence.
So it must be improved in existing rotor compressor oil suction structure design, to solve problems.
Utility model content
The purpose of this utility model is to provide a kind of rotor-type compressor oil suction structure, to solve above-mentioned technical problem.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of rotor-type compressor oil suction structure, including housing and the bent axle and fuel sucking pipe that are installed in housing；Housing
Oil sump is formed on bottom；Bent axle includes the short axle coordinated with lower bearing, and fuel sucking pipe interference fit is fixed in the short axle of bent axle；Oil suction
The oil suction spout part of pipe is located at close to one end of oil sump bottom.
Further, distance of the oil suction spout part away from oil sump bottom is in the range of (0.5~1.5) × d mm；Wherein, d
For fuel sucking pipe external diameter.Purpose is to set the appropriate distance of oil sump bottom and the oil suction mouth of pipe, may be in the oil suction mouth of pipe when reducing oil suction
The disturbance such as vortex caused by place, ensure that oil suction mouth of pipe oil suction is smooth.
Further, the magnitude of interference scope that bent axle short axle coordinates with fuel sucking pipe is：0~(0.3%~0.5%) × dmm；Its
In, d is fuel sucking pipe external diameter.Purpose is both to have ensured fuel sucking pipe and the secure fit of short axle between the two, can prevent matching allowance again
Technique caused by too big possibility realizes difficult and fuel sucking pipe injurious deformation generation.
Further, bent axle short axle and the length h of fuel sucking pipe interference fit part5=(30%~50%) × fuel sucking pipe is total
Long h4mm；Fuel sucking pipe exposes bent axle minor axis length h2=(0~4) × d mm；Wherein, d is fuel sucking pipe external diameter.Purpose is both to have ensured
Fuel sucking pipe stretches into oil sump enough deeply to ensure reliable oil suction, can prevent fuel sucking pipe from exposing the length h of bent axle short axle again2Excessive possibility
Cause the askew pipe of fuel sucking pipe when rotating at a high speed or fall the reliability failures such as pipe.
Relative to prior art, the utility model has the advantages that：The utility model provides a kind of rotator type pressure
Contracting machine oil suction structure, it is fixed on by fuel sucking pipe interference fit on bent axle, fuel sucking pipe and bent axle short axle lengthens to adapt to oil sump depth
Degree；Mutually rationally coordinated by oil suction length of tube, bent axle short axle length of fit and oil sump, solve existing rotor-type compressor and inhale
Oily construction design method can not meet the technology of requirement of the lubrication to fuel head during big lubricating oil charging amount and high-speed cruising
Problem, the purpose that rotor-type compressor reliably uses on direct current varied-frequency air conditioner is reached.
Brief description of the drawings
Fig. 1 is the utility model rotor-type compressor oil suction structural representation；
Fig. 2 is the schematic diagram that fuel sucking pipe coordinates installation with bent axle.
Embodiment
Refer to shown in Fig. 1 and Fig. 2, a kind of rotor-type compressor oil suction structure of the utility model offer, including bent axle 1,
Oil sump 2, fuel sucking pipe 3；The interference fit of fuel sucking pipe 3 is fixed on the bent axle short axle 1-1 of the bottom of bent axle 1, fuel sucking pipe 3 and bent axle short axle
1-1 is lengthened to adapt to the depth requirements of oil sump 2；By the length of fuel sucking pipe 3, bent axle short axle 1-1 lengths of fit and the height of oil sump 2 mutually
Coordinate, requirement of the lubrication to fuel head during adapting to the big injection flow of compressor and high-speed cruising.
First, according to needed for determining injection flow oil sump 2 depth h1, it is ensured that static fuel head is not higher than noise reduction on the pump housing
Cover exhaust open height h6；
Secondly, according to h1Depth and first fixed bent axle short axle 1-1 length h3, determine that fuel sucking pipe 3 exposes bent axle minor axis length
h2, it is ensured that distances of the oil suction spout part 3-1 away from oil sump bottom 2-1 is in the range of (0.5~1.5) × d mm；Wherein, d is suction
Oil pipe external diameter.
3rd, according to h2Length and pump body structure design, coordinate to determine bent axle short axle 1-1 length h3With the length of fuel sucking pipe 3
h4；
4th, according to h4Length, coordinate to determine that bent axle short axle 1-1 and fuel sucking pipe 3 are interference fitted length h5。
The calculating of matching allowance and interference fit length, injection flow and fuel sucking pipe are transported in high speed necessary to main consideration
Reliability under the conditions of row, specific method are as follows：
Comprehensive fuel sucking pipe material, structure snd size, the magnitude of interference scope that bent axle short axle coordinates with fuel sucking pipe are：0~0.5%
×dmm。
Comprehensive fuel sucking pipe stress and reliability Work requirement：Bent axle short axle and the length h of fuel sucking pipe interference fit part5=
(30%~50%) × fuel sucking pipe overall length h4mm；Fuel sucking pipe exposes bent axle minor axis length h2=(0~4) × d mm.
Claims (4)
1. a kind of rotor-type compressor oil suction structure, it is characterised in that including housing and the bent axle (1) being installed in housing and inhale
Oil pipe (3)；
Oil sump (2) is formed on the bottom of housing；
Bent axle (1) includes the short axle coordinated with lower bearing, and fuel sucking pipe (3) is interference fitted the short axle (1-1) for being fixed on bent axle (1)
On；The oil suction spout part (3-1) of fuel sucking pipe (3) is located at close to one end of oil sump bottom (2-1).
A kind of 2. rotor-type compressor oil suction structure according to claim 1, it is characterised in that oil suction spout part (3-1)
Distance away from oil sump bottom (2-1) is in the range of (0.5~1.5) × dmm；Wherein, d is fuel sucking pipe external diameter.
3. a kind of rotor-type compressor oil suction structure according to claim 1, it is characterised in that bent axle short axle and fuel sucking pipe
The magnitude of interference scope of cooperation is：0~(0.3%~0.5%) × dmm；Wherein, d is fuel sucking pipe external diameter.
4. a kind of rotor-type compressor oil suction structure according to claim 1, it is characterised in that bent axle short axle and fuel sucking pipe
It is interference fitted the length h of part5=(30%~50%) × fuel sucking pipe overall length h4mm；Fuel sucking pipe exposes bent axle minor axis length h2=
(0~4) × dmm；Wherein, d is fuel sucking pipe external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720414452.3U CN206708022U (en) | 2017-04-19 | 2017-04-19 | A kind of rotor-type compressor oil suction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720414452.3U CN206708022U (en) | 2017-04-19 | 2017-04-19 | A kind of rotor-type compressor oil suction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206708022U true CN206708022U (en) | 2017-12-05 |
Family
ID=60456306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720414452.3U Active CN206708022U (en) | 2017-04-19 | 2017-04-19 | A kind of rotor-type compressor oil suction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206708022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949060A (en) * | 2017-04-19 | 2017-07-14 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor oil suction structure and its method for designing |
| CN110273837A (en) * | 2019-07-24 | 2019-09-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
-
2017
- 2017-04-19 CN CN201720414452.3U patent/CN206708022U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949060A (en) * | 2017-04-19 | 2017-07-14 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor oil suction structure and its method for designing |
| CN106949060B (en) * | 2017-04-19 | 2019-03-05 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor oil suction structure and its design method |
| CN110273837A (en) * | 2019-07-24 | 2019-09-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
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