CN208718933U - A kind of oil structure of screw compressor - Google Patents
A kind of oil structure of screw compressor Download PDFInfo
- Publication number
- CN208718933U CN208718933U CN201821342551.6U CN201821342551U CN208718933U CN 208718933 U CN208718933 U CN 208718933U CN 201821342551 U CN201821342551 U CN 201821342551U CN 208718933 U CN208718933 U CN 208718933U
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- China
- Prior art keywords
- cavity
- oil
- central axis
- exhaust
- screw compressor
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- 239000003507 refrigerant Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims description 7
- 210000004907 gland Anatomy 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 48
- 238000004378 air conditioning Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to electric scroll technical field of refrigeration compressors, the purpose is to provide a kind of oil structure of screw compressor, can reduce the oil content of the gaseous refrigerant of discharge.A kind of oil structure of screw compressor, exhaust cavity is separated into the first cavity, the second cavity and third cavity, first cavity and the second cavity are parallel to each other, third cavity be located at the lower section of the first cavity and central axis on extended line direction with the central axis of the second cavity and intersection；Gas vent, exhaust valve plate and stop valve block are located in the first cavity, second cavity internal upper part sets exhaust pipe, internal diameter of the outer diameter of exhaust pipe less than the second cavity, an air inlet is offered in the cavity wall for separating the first cavity and the second cavity, it the central axis of the central axis of air inlet and the second cavity and converges at infinity on extended line direction, the Single port of third cavity is connected to oil return aperture, and other end cross connection to the lower part of the second cavity is at bottom.
Description
Technical field
The utility model relates to electric scroll technical field of refrigeration compressors, are to be related to a kind of scroll compression specifically
The oil structure of machine.
Background technique
With using pure electric vehicle as the new energy passenger car and commercial vehicle including hybrid power, fuel cell of representative
Greatly develop and popularize, matched electric air-conditioning compressor has also obtained significant progress, because fuel vehicle is used
Compressor of air conditioner can not be applied to new energy class vehicle.It is known that the refrigerator oil in compressor participates in the profit of compressor
It is sliding, a certain proportion of refrigerator oil is contained in the gas of compression, optimal state is that pressure is not discharged with refrigerant in refrigerator oil
Outside contracting machine, it may be implemented to stablize lubrication in this way.If will excessively be generated to the lubrication of compressor with the oil mass that refrigerant is discharged
Adverse effect.The shell of traditional compressor is in high-voltage end, and the high pressure gas of compressor discharge is discharged to the shell of compressor first
Inside, the flow velocity that enclosure interior has biggish volume that can reduce gas enable most of refrigerator oil particle in gas to sink
Product to housing bottom without with refrigerator cycle, for currently used electric air-conditioning compressor, shell is low-pressure state, pressure
Refrigerant after contracting is directly easy to arranging the refrigerator oil being mixed in gaseous refrigerant to exterior line at a high speed by refrigerant band
It walks, if the circuit design of air-conditioning system is undesirable, the refrigerator oil taken away is possible to be detained in pipe-line system without with system
Refrigerant is recycled, and the lubrication of compressor is unfavorable for.Therefore, it is necessary to which mating corresponding oil structure, makes most of refrigerator
Compressor is not discharged with refrigerant in oil, and the structure is extremely important for electric air-conditioning compressor.
The oil structure of the screw compressor generallyd use now is that the center of discharge chamber is deep by an exhaust pipe
Position separates oil gas by generating vortex, and structure is as shown in Figure 1.The quiet disk 1 ' and high gland 3 ' of compressor form
Exhaust cavity 7 ' is located at discharge chamber body side on quiet disk 1 ' and is fastened with exhaust valve plate 5 ' and stop valve block 4 ' and oil return strainer
6 ', gas vent 1a ' and oil return aperture 1b ' are provided on quiet disk 1 ', and oil return strainer 6 ' covers oil return aperture 1b ', on high gland 3 '
Equipped with exhaust pipe 2 ', the oral area of exhaust pipe 2 ' is deeply to the lower section of discharge chamber 7 ', the height compressed via screw compressor sound disk
The mixture of super pressure-high temperature gaseous refrigerant and refrigerator oil is discharged in discharge chamber body by gas vent 1a ', mixture discharge after its
In droplets partial freeze machine oil due to inertia and vortex effect be ejected on the side wall of discharge chamber 7 ' after again along side wall
Flow down via oil return strainer 6 and oil return aperture 1b flow back into suction cavity start carry out second of greasing cycle, due to discharge chamber
7 ' it is in irregular shape, gaseous mixture present turbulent condition, partial freeze machine oil can be as gaseous refrigerant be via exhaust pipe
2 ' arrange to the outside of compressor, and the oil content of refrigerant is higher, and discharged refrigerator oil can not flow back into suction chamber participation in time
Lubrication, influences the lubricant effect of compressor.
Utility model content
The purpose of the utility model is to provide a kind of oil structures of screw compressor, can solve the shakiness during oil
Determine problem, the refrigerator oil in mixture is completely separated with other refrigerants, reduces the oil content of the gaseous refrigerant of discharge.
Purpose of the utility model is realized as follows:
A kind of oil structure of screw compressor, the quiet disk and high gland of compressor constitute exhaust cavity, the quiet disk
It is upper to be fastened with exhaust valve plate, stop valve block and oil return strainer positioned at the exhaust cavity side, gas vent is provided on the quiet disk
With oil return aperture, oil return aperture is stated in oil return screen cover residence, and the exhaust cavity transit chamber wall is separated into the first cavity,
Two cavitys and third cavity, the central axis of first cavity and the central axis of the second cavity are the longitudinal straight line being parallel to each other,
It is one on extended line direction that the third cavity, which is located at the lower section of first cavity and the central axis of the third cavity,
With the central axis of second cavity and the lateral straight line that intersects；The gas vent, exhaust valve plate and stop valve block are located at
In first cavity, it is installed on exhaust pipe in the second cavity internal upper part, the outer diameter of the exhaust pipe is less than described second
The internal diameter of cavity, offered in the cavity wall for separating first cavity and the second cavity an air inlet make first cavity and
It is communicated between second cavity so that the mixture of refrigerant and refrigerator oil can enter the second cavity from first cavity, it is described
It the central axis of the central axis of air inlet and second cavity and converges at infinity on extended line direction, the third cavity
Single port be connected to the oil return aperture, the lower part of other end cross connection to second cavity of the third cavity is close
At bottom.
Wherein, the surfaces externally and internally of the exhaust pipe is smooth surface to reduce the flow resistance of gas.Likewise, institute
The inner wall for stating the second cavity is smooth surface；The inner wall of the air inlet is smooth surface.
When the compressor is operated, the high pressure-temperature gaseous refrigerant and refrigerator oil compressed via screw compressor sound disk
Mixture be discharged in the first cavity by gas vent, then via air inlet enter the second cavity, due to exhaust pipe and the second chamber
Body forms an annular region and air inlet and the second cavity are eccentric, can be in counter clockwise direction edge after air-flow enters annular region
Annular region revolution at a high speed and downlink, droplets refrigerator oil during doing revolution downlink in air-flow is along the second cavity
Side wall flows to the bottom of the second cavity, and then flows into third cavity, and enter oil return aperture by oil return hole pattern and flow back into air-breathing
Cavity starts to carry out second of greasing cycle.And refrigerant gas realizes freezing then via the externally discharged pipeline of exhaust pipe mouth
Being completely separated for machine oil and refrigerant, reduces the oil content of the gaseous refrigerant of discharge.
Detailed description of the invention
By following the embodiments of the present invention and description taken together with the accompanying drawings, show the utility model further advantage and
Feature, the embodiment provide by way of example, and but it is not limited to this, in which:
Fig. 1 is the structural schematic diagram of the oil structure of screw compressor in the prior art.
Fig. 2 is a kind of structural schematic diagram of the oil structure of screw compressor of the utility model.
Fig. 3 is the air inlet of oil structure and the drawing in side sectional elevation of the second cavity in Fig. 2, and body lines is along air inlet
Mandrel line horizontal section.
Specific embodiment
The oil structure of screw compressor as shown in Figure 2, the quiet disk 1 of compressor and high gland 3 constitute exhaust cavity
7.It is vented cavity 7 and first cavity 71, the second cavity 72 and third cavity 73, the central axis of the first cavity 71 is separated by cavity wall
Central axis with the second cavity 72 is the longitudinal straight line being parallel to each other, and third cavity 73 is located at the lower section of the first cavity 71 and third
The central axis of cavity 73 be one on extended line direction with the central axis of the second cavity 72 and the lateral straight line that intersects.It is quiet
Disk 1 is equipped with gas vent 1a, is located at 71 side of the first cavity on quiet disk 1 and is fastened with exhaust valve plate 5 and stop valve block 4, in the second chamber
72 internal upper part of body is installed on exhaust pipe 2, internal diameter of the outer diameter less than the second cavity 72 of exhaust pipe 2, the outer diameter of exhaust pipe 2 and second
The internal diameter of cavity 72 forms a ring structure, and the ring width of the ring structure will meet traffic requirement.Separating the first cavity 71
And second cavity 72 cavity wall 70 on offer air inlet 3a and make to communicate between the first cavity 71 and the second cavity 72 to freeze
The mixture of agent and refrigerator oil can enter the second cavity 72 from the first cavity 71, and the axle center of air inlet 3a and the second cavity 72 is in
It the central axis of existing decentered distribution, the i.e. central axis of air inlet 3a and the second cavity 72 and converges at infinity on extended line direction
(as shown in Figure 3).It is additionally provided with oil return aperture 1b on quiet disk 1, oil return strainer 6 is also fastened on quiet disk 1, oil return strainer 6 covers
Oil return aperture 1b is filtered issuable impurity to protect sound disk injury-free, the Single port connection of third cavity 73
Oil return aperture 1b, other end cross connection to the lower part of the second cavity 72 is at bottom.
Wherein, the inner wall of the surfaces externally and internally of exhaust pipe 2, the inner wall of the second cavity 72 and air inlet 3a be smooth surface with
Just the flow resistance of gas is reduced.
Although the utility model is hereinbefore illustrated according to preferred embodiment, it is not intended that model of the invention
It encloses and is confined to above-mentioned structure, as long as those skilled in the art can easily develop after reading above-mentioned explanation
Equivalent substitution structure out, the equivalent changes and modifications made under the spirit and scope for not departing from the present invention should be all covered by
Within the scope of the invention patent.
Claims (4)
1. a kind of oil structure of screw compressor, the quiet disk and high gland of compressor constitute exhaust cavity, on the quiet disk
Be fastened with exhaust valve plate, stop valve block and oil return strainer positioned at the exhaust cavity side, be provided on the quiet disk gas vent and
Oil return aperture is stated in oil return aperture, oil return screen cover residence, it is characterised in that:
The exhaust cavity transit chamber wall is separated into the first cavity, the second cavity and third cavity, the center of first cavity
The central axis of axis and the second cavity is the longitudinal straight line being parallel to each other, the third cavity be located at the lower section of first cavity and
The central axis of the third cavity be one on extended line direction with the central axis of second cavity and the cross that intersects
To straight line；
The gas vent, exhaust valve plate and stop valve block are located in first cavity, install in the second cavity internal upper part
There is exhaust pipe, the outer diameter of the exhaust pipe is less than the internal diameter of second cavity, is separating first cavity and the second cavity
Cavity wall on offer an air inlet and make to communicate between first cavity and the second cavity so as to refrigerant and refrigerator oil
Mixture can enter the second cavity from first cavity, and the central axis of the air inlet and the central axis of second cavity hang down
It converges at infinity directly and on extended line direction, the Single port of the third cavity is connected to the oil return aperture, the third cavity
Other end cross connection to the lower part of second cavity at bottom.
2. the oil structure of screw compressor as described in claim 1, it is characterised in that: the surfaces externally and internally of the exhaust pipe is equal
For smooth surface.
3. the oil structure of screw compressor as described in claim 1, it is characterised in that: the inner wall of second cavity is light
Sliding surface.
4. the oil structure of screw compressor as described in claim 1, it is characterised in that: the inner wall of the air inlet is smooth
Surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821342551.6U CN208718933U (en) | 2018-08-20 | 2018-08-20 | A kind of oil structure of screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821342551.6U CN208718933U (en) | 2018-08-20 | 2018-08-20 | A kind of oil structure of screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208718933U true CN208718933U (en) | 2019-04-09 |
Family
ID=65978550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821342551.6U Expired - Fee Related CN208718933U (en) | 2018-08-20 | 2018-08-20 | A kind of oil structure of screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208718933U (en) |
-
2018
- 2018-08-20 CN CN201821342551.6U patent/CN208718933U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |