CN104848616A - Oil and gas separator in air conditioning system - Google Patents
Oil and gas separator in air conditioning system Download PDFInfo
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- CN104848616A CN104848616A CN201510259184.8A CN201510259184A CN104848616A CN 104848616 A CN104848616 A CN 104848616A CN 201510259184 A CN201510259184 A CN 201510259184A CN 104848616 A CN104848616 A CN 104848616A
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- inlet
- oil
- entrance
- conditioning system
- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cyclones (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention discloses an oil and gas separator in an air conditioning system. Pressure drop of the oil and gas separator can be reduced, and the energy efficiency of air conditioning equipment can be improved. The technical scheme includes that an inlet for mixed fluid of gaseous refrigerants and oil is formed in the upper portion of a barrel of the oil and gas separator in the air conditioning system and comprises a straight pipe inlet section, the straight pipe inlet section is connected to the upper portion of the barrel and extends into an internal end of the barrel to be connected with a starting end of a tubular inlet acceleration section, and an arc-shaped inlet flow guide plate is connected to the tail end of the inlet acceleration section. Compared with the prior art, the oil and gas separator has the advantages that the oil and gas separator is provided with the structures of the inlet section, the inlet acceleration section and the inlet flow guide plate, accordingly, the oil and gas mixed fluid of the lubricating oil and the gaseous refrigerants is forcedly turned without being directly collided with the internal structure of the oil and gas separator after flowing into the oil and gas separator from the inlet section, the pressure drop of the oil and gas separator can be reduced, pressure drop values are reduced by 10-50% under the condition of equivalent separation efficiency, and the energy efficiency of the air conditioning equipment can be improved.
Description
Technical field
The present invention relates to a kind of air-conditioning equipment, particularly a kind of lubricating oil of air-conditioning equipment and the separation equipment of cold-producing medium.
Background technology
Lubricating oil is taken along with the discharge of cold-producing medium (refrigerant) within the compressor.If the gas mixture of lubricating oil and cold-producing medium, without gs-oil separator (oil content) or through the not high gs-oil separator of separative efficiency, can reduce the heat-transfer effect of heat exchanger, make refrigerating efficiency reduce.If lubricating oil does not get back to compressor in time, the bad reduction of compressor lubrication its service life also can be caused.Gs-oil separator is structurally divided into horizontal and vertical.Wherein, vertical oil separator is more with centrifugal separation, because the lubricating oil centrifugation power in gas mixture is greater than gaseous refrigerant centrifugal force, lubricating oil is separated with cold-producing medium.The oil content structure of prior art as depicted in figs. 1 and 2, entrance 1 is arranged on the top of cylindrical shell 3, inlet baffle 2 is provided with in entrance 1, inlet baffle 2 is between cylindrical shell 3 and inner barrel 4, cylindrical shell 3 is arranged on inner barrel 4 top, it is coaxial with inner barrel 4, and inner barrel 4 top is provided with gaseous coolant outlet 6, and cylindrical shell 3 bottom is provided with oil export 5.Separation process is: the air-fuel mixture fluid of lubricating oil and gaseous coolant enters from the entrance 1 of oil content, first collide with inlet baffle 2, collide inner barrel 4 outer wall again, then rotary motion in cylindrical shell 3, last gaseous refrigerant leaves gs-oil separator from gaseous coolant outlet 6, and lubricating oil leaves gs-oil separator from oil export 5.In separation process, gaseous refrigerant and lubricating oil are turned back through twice pressure, and the pressure loss is comparatively large, causes the power of air-conditioning equipment to raise, and efficiency declines.
Summary of the invention
The object of this invention is to provide the gs-oil separator in a kind of air-conditioning system, the technical problem that solve reduces gs-oil separator pressure drop, improves the efficiency of air-conditioning equipment.
The present invention is by the following technical solutions: the gs-oil separator in a kind of air-conditioning system, cylindrical shell top is provided with the entrance of the fluid-mixing of gaseous coolant and oil, described entrance is for be connected with straight tube entrance on cylindrical shell top, entrance puts in the initiating terminal of the accelerating inlet of the end connecting tubular in cylindrical shell, and the end of accelerating inlet is connected with the entrance guiding plate of arcuation.
The end, outer end of entrance of the present invention is connected with inlet flange.
The outer face of inlet flange of the present invention is parallel with the distal end faces of accelerating inlet.
Angle between the axis of entrance of the present invention and the outer face of inlet flange
for:
Accelerating inlet of the present invention is conical pipe, cross section is oval, its tube wall is to convex in the shape of axial section, the initiating terminal of accelerating inlet is circular large end, end is oval small end, and the angle theta of the initiating terminal end face of accelerating inlet and the outer face of inlet flange is: 0 ° of < θ < 45 °.
Accelerating inlet of the present invention is that the major axis of non-circular cross-section is vertical.
The terminus area of accelerating inlet of the present invention is 0.5 ~ 0.7 times of initiating terminal area, and ratio of semi-minor axis length is 1.5 ~ 3.
Entrance guiding plate of the present invention is arranged in cylindrical shell along cylinder inboard wall, and arcuation is spiral of Archimedes shape, and the number of turns is 0.3 ~ 1.
The height of entrance guiding plate of the present invention is greater than the height of accelerating inlet end.
The present invention compared with prior art, adopt the structure of entrance, accelerating inlet and entrance guiding plate, after the air-fuel mixture fluid of lubricating oil and gaseous coolant enters from entrance, be not forced to turn back with the direct collision of gs-oil separator internal structure, the pressure drop of gs-oil separator is reduced, when separative efficiency is suitable, voltage drop value reduces 10 ~ 50%, improves the efficiency of air-conditioning equipment.
Accompanying drawing explanation
The centrifugal oil-air separator structural representation of Fig. 1 prior art.
Fig. 2 be Fig. 1 overlook rotation diagram.
Fig. 3 is centrifugal oil-air separator structural representation of the present invention.
Fig. 4 is entrance guiding plate structure schematic diagram of the present invention.
Fig. 5 is the entrance emulation motion pattern of prior art.
Fig. 6 is entrance of the present invention emulation motion pattern.
Fig. 7 is entrance flow velocity and the pressure drop comparison diagram of the present invention and prior art.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.As shown in Figure 3, gs-oil separator in air-conditioning system of the present invention, for vertical structure, be provided with vertical cylindrical shell 3, cylindrical shell 3 is coaxially arranged with inner barrel 4 in top, and the sidewall of inner barrel 4 has mouth, the top of inner barrel 4 and cylindrical shell 3 is provided with gaseous coolant outlet 6, gaseous coolant outlet 6 is coaxial with inner barrel 4, arranges oil export 5, oil export 5 axis and cylindrical shell 3 axes normal in the bottom of cylindrical shell 3.The sidewall on cylindrical shell 3 top has opening, and the height of opening is positioned at the middle part of inner barrel 4 height, for arranging the entrance of the fluid-mixing of gaseous coolant and oil.
The entrance of the fluid-mixing of gaseous coolant and oil is provided with in cylindrical shell 3 upper portion side wall, the structure of this entrance is: the opening of cylindrical shell 3 upper portion side wall is connected with entrance 7, entrance 7 is the straight tube that a section is passed cylindrical shell 3 tube wall, its diameter is less than inner barrel 4, entrance 7 puts in the initiating terminal of the accelerating inlet 9 of the end connecting tubular in cylindrical shell 3, and the end of accelerating inlet 9 is connected with the entrance guiding plate 10 of arcuation.Entrance 7 puts in 0.5 times of internal diameter that the part in cylindrical shell 3 and the length sum of accelerating inlet 9 are less than cylindrical shell 3, and the end that entrance 7 puts in cylindrical shell 3 is connected with cylindrical shell 3 opening part near cylindrical shell 3 wall side.
The end, outer end of entrance 7 is connected with inlet flange 8, and the outer face of inlet flange 8 is parallel with the distal end faces of the outer end end face of oil export 5, accelerating inlet 9.
The end that entrance 7 puts in cylindrical shell 3 in cylindrical shell 3 and inner barrel 4 outer between, the angle between the axis of entrance 7 and the outer face of inlet flange 8
for:
Accelerating inlet 9 is one section of conical pipe, and cross section is oval, and oval major axis is vertical, and its tube wall is to convex in the shape of axial section, and protuberance, towards the axis of pipe, is formed streamlined.The initiating terminal of accelerating inlet 9 is circular large end, is connected with entrance 7, and the end of accelerating inlet 9 is oval small end, connects the initiating terminal of entrance deflector 10.The angle theta of the initiating terminal end face of accelerating inlet 9 and the outer face of inlet flange 8 is: 0 ° of < θ < 45 °.The terminus area of accelerating inlet 9 is 0.5 ~ 0.7 times of initiating terminal area, and ratio of semi-minor axis length is 1.5 ~ 3.
Entrance guiding plate 10 is arranged in cylindrical shell 3 along cylindrical shell 3 inwall, and arcuation is spiral of Archimedes shape, and the number of turns is 0.3 ~ 1, and as shown in Figure 4, the height L of entrance guiding plate 10 is greater than the height L1 of accelerating inlet 9 end.The height L of entrance guiding plate 10 is 1.2 ~ 3 times of entrance 7 internal diameter d, and the height L1 of accelerating inlet 9 is (0.4 ~ 1) L.
Inlet flange 8 is connected with the blast pipe of compressor.
When gs-oil separator in air-conditioning system of the present invention works, the fluid-mixing (mixture of refrigerant superheat gas and lubricating oil liquid) of gaseous coolant and oil ejects after blast pipe from compressor, successively by inlet flange 8, entrance 7, after accelerating inlet 9 accelerates, to spin between inner barrel 4 and entrance guiding plate 10 motion, part oil droplet is because the separated whereabouts of centrifugal force, simultaneously, mixture is by entrance guiding plate 10 rectification, to spin in cylindrical shell 3 afterwards motion, the overwhelming majority separated whereabouts of oil droplet, the oil droplet fallen flows out from oil export 5 gets back to compressor, refrigerant gas then enters after inner barrel 4 through the opening of inner barrel 4 sidewall and rises, discharge from gaseous coolant outlet 6, enter into condenser.
In the present embodiment, physical dimension is:
Angle between the axis of entrance 7 and the outer face of inlet flange 8
for: 85 °.
The angle theta of the initiating terminal end face of accelerating inlet 9 and the outer face of inlet flange 8 is: 15 °.
The initiating terminal diameter of accelerating inlet 9 is 65mm, and the terminus area of accelerating inlet 9 is 0.6 times of initiating terminal area.
Entrance guiding plate 10 number of turns is 0.25, and height L is accelerating inlet 10 vertical extension L1+20mm, L1 is 100mm, and entrance 7 internal diameter d is 65mm.
Comparative example, adopts the YF45 type gs-oil separator of cylindrical shell 3, inner barrel 4, gaseous coolant outlet 6 and oil export 5 size, Yangzhou 10,000 refrigerating equipment corporation, Ltd that structure is identical with embodiment.
Adopt Ansys Fluent fluid simulation software to the gs-oil separator modeling and simulating of embodiment and comparative example.Under entrance velocity is respectively 4m/s, 10m/s and 21m/s situation, the entrance of the fluid-mixing of monitoring gaseous coolant and oil and gaseous coolant export the pressure of 6, the pressure of entrance is deducted the pressure of outlet, the difference obtained is pressure drop, and the mixture pressure drop of embodiment and comparative example is in table 1.The simulation result of embodiment and comparative example is depicted as entrance flow velocity and pressure drop comparison diagram, as shown in Figure 7, by embodiment and comparative example contrast, illustrates that the gs-oil separator in air-conditioning system of the present invention has the technique effect significantly reducing voltage drop value.
Table 1 embodiment and comparative example entrance and exit pressure drop simulation result
As shown in Figure 5 and Figure 6, with Ansys Fluent fluid simulation software, embodiment and comparative example are emulated.Adopt K-ε turbulence model, DPM Discrete Phase Model, entrance velocity is 10m/s, emulates, and obtains motion pattern.As shown in Figure 5, the gaseous coolant of prior art oil content and fluid-mixing (cold-producing medium and the oil mixture) collision of oil are on inlet baffle, and flow direction changes comparatively large, and therefore the pressure loss is larger.As shown in Figure 6, the flow direction of oil content of the present invention changes less, thus pressure drop is relatively little.
Also illustrated by above-mentioned emulation, when separative efficiency is suitable, hinge structure of the present invention, voltage drop value can reduce 10 ~ 50%.
0 ° of < θ < 45 ° is to meet entrance 9 installation requirement.
The terminus area of accelerating inlet 9 is 0.5 ~ 0.7 times of initiating terminal area, and accelerating inlet 9 exports and littlely can improve fluid-mixing speed, and the lower meeting of speed causes separative efficiency to reduce.Vertical oil separator requires it is 5 ~ 30m/s to the entrance velocity of fluid-mixing, and the entrance velocity of the refrigeration system of different cold-producing medium is different, and the entrance velocity scope under such as R134a refrigeration system different load is 4 ~ 20m/s, should choose 0.7; R407C refrigeration system different load lower inlet velocity interval is 2.8 ~ 14.5m/s, therefore chooses 0.56.
Ratio of semi-minor axis length is 1.5 ~ 3, is to consider structure and space requirement.Because the initiating terminal diameter of entrance 7 and accelerating inlet 9 is comparatively large, and the distance of inner barrel 4 to cylindrical shell 3 is general less, and therefore consider installation dimension, the length of minor axis is less.
The height L of entrance guiding plate 10 is greater than accelerating inlet 9 height L1, is to ensure that the fluid flowed out from accelerating inlet 9 can all through entrance guiding plate 10 water conservancy diversion.The height L of entrance guiding plate 10 is greater than diameter d, avoids fluid to be disperseed in flow process.
Entrance guiding plate 10 number of turns is 0.3 ~ 1, at least needs 0.3 circle to reach guide functions, and more than after 1 circle, guide functions DeGrain.
Claims (9)
1. the gs-oil separator in an air-conditioning system, cylindrical shell (3) top is provided with the entrance of the fluid-mixing of gaseous coolant and oil, it is characterized in that: described entrance is for be connected with straight tube entrance (7) on cylindrical shell (3) top, entrance (7) puts in the initiating terminal of the accelerating inlet (9) of the end connecting tubular in cylindrical shell (3), and the end of accelerating inlet (9) is connected with the entrance guiding plate (10) of arcuation.
2. the gs-oil separator in air-conditioning system according to claim 1, is characterized in that: the end, outer end of described entrance (7) is connected with inlet flange (8).
3. the gs-oil separator in air-conditioning system according to claim 2, is characterized in that: the outer face of described inlet flange (8) is parallel with the distal end faces of accelerating inlet (9).
4. the gs-oil separator in air-conditioning system according to claim 3, is characterized in that: the angle between the axis of described entrance (7) and the outer face of inlet flange (8)
for:
5. the gs-oil separator in air-conditioning system according to claim 4, it is characterized in that: described accelerating inlet (9) is conical pipe, cross section is oval, its tube wall is to convex in the shape of axial section, the initiating terminal of accelerating inlet (9) is circular large end, end is oval small end, and the angle theta of the initiating terminal end face of accelerating inlet (9) and the outer face of inlet flange (8) is: 0 ° of < θ < 45 °.
6. the gs-oil separator in air-conditioning system according to claim 5, is characterized in that: the major axis that described accelerating inlet (9) is non-circular cross-section is vertical.
7. the gs-oil separator in air-conditioning system according to claim 6, is characterized in that: the terminus area of described accelerating inlet (9) is 0.5 ~ 0.7 times of initiating terminal area, and ratio of semi-minor axis length is 1.5 ~ 3.
8. the gs-oil separator in air-conditioning system according to claim 7, it is characterized in that: described entrance guiding plate (10) is arranged in cylindrical shell (3) along cylindrical shell (3) inwall, arcuation is spiral of Archimedes shape, and the number of turns is 0.3 ~ 1.
9. the gs-oil separator in air-conditioning system according to claim 8, is characterized in that: the height of described entrance guiding plate (10) is greater than the height of accelerating inlet (9) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259184.8A CN104848616B (en) | 2015-05-20 | 2015-05-20 | Gs-oil separator in air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259184.8A CN104848616B (en) | 2015-05-20 | 2015-05-20 | Gs-oil separator in air-conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN104848616A true CN104848616A (en) | 2015-08-19 |
| CN104848616B CN104848616B (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510259184.8A Active CN104848616B (en) | 2015-05-20 | 2015-05-20 | Gs-oil separator in air-conditioning system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484973A (en) * | 2015-10-09 | 2016-04-13 | 西安交通大学 | Cyclone oil-gas separator |
| CN114109325A (en) * | 2021-11-22 | 2022-03-01 | 西南石油大学 | Gas well gas increasing and speed increasing and water atomizing device |
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| CN204757485U (en) * | 2015-05-20 | 2015-11-11 | 深圳麦克维尔空调有限公司 | Oil and gas separator among air conditioning system |
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2015
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484973A (en) * | 2015-10-09 | 2016-04-13 | 西安交通大学 | Cyclone oil-gas separator |
| CN105484973B (en) * | 2015-10-09 | 2017-12-08 | 西安交通大学 | A kind of cyclone type oil-gas separator |
| CN114109325A (en) * | 2021-11-22 | 2022-03-01 | 西南石油大学 | Gas well gas increasing and speed increasing and water atomizing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104848616B (en) | 2017-06-30 |
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