CN205277825U - Scroll compressor oil return control system - Google Patents
Scroll compressor oil return control system Download PDFInfo
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- CN205277825U CN205277825U CN201520887283.6U CN201520887283U CN205277825U CN 205277825 U CN205277825 U CN 205277825U CN 201520887283 U CN201520887283 U CN 201520887283U CN 205277825 U CN205277825 U CN 205277825U
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- oil
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- oil separator
- fixed scroll
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Abstract
The utility model provides a scroll compressor oil return control system, it is including scroll compressor and oil separator. The scroll compressor subassembly of scroll compressor in casing and casing, in the scroll compressor subassembly, fixed vortex dish is twined to close with the motion vortex and is constituted the scroll compressor chamber, fixed vortex dish has fixed vortex dish air inlet and fixed vortex dish gas vent with scroll compressor chamber intercommunication, compressor intake -tube connection coils the air inlet in fixed vortex, fixed vortex dish gas vent is with the inner space intercommunication of scroll compressor chamber and casing, still be equipped with with the inlet port of scroll compressor chamber intercommunication on the fixed vortex dish and be connected with into oil pipe, oil separator is equipped with the oil separator air inlet, oil separator gas vent and oil separator oil -out, compressor exhaust pipe holds union coupling in oil separator air inlet, the oil separator oil -out is connected logically through the oil pipe that advances who returns oil pipe with pass compressor housing. The utility model discloses can show the operating efficiency, the reliability that improve the compressor to and air conditioning system's complete machine ability, efficiency.
Description
Technical field
The utility model relates to compressor arrangement and Refrigeration Technique, specifically the control of compressor and air-conditioning system oil return.
Background technology
For general air-conditioning system, when practical application for guaranteeing that compressor does not lack oil and runs and causing trouble, or (with) refrigerator oil brings interchanger into refrigerant and cause heat exchange deleterious, often arranges oil separator in systems in which. Generally, oil is separated with refrigerant by compressor air-discharging to oil separator, oil separator in air-conditioning system oil return, and the oil separated is back to suction side (low-tension side) pipeline or gas-liquid separator. Being the compressor return oil system of the Chinese patent proposition of 201210331060.2 such as application number, the oil isolated by oil separator returns suction side. No matter it is back air suction pipe or gas-liquid separator, all can bring a certain amount of refrigerator oil into when compressor sucks gaseous coolant and cause the reduction of compressor volumetric efficiency. Air-conditioning system is run under identical operating mode, and compressor recirculating oil quantity is more many, and ability decay is more big. Therefore, can there is a contradictory phenomena in this kind of circuit: oil return is more many, and compressor operating reliability is more high, but operational efficiency can reduce, and mainly shows as volumetric efficiency and reduces, and the decay of air-conditioning system ability increases. Namely compressor reliability and air-conditioning system efficiency are contradiction. So just need to find a good reliability and all acceptable trim point of ability. In any case but, this kind of circuit all can cause the reduction of compressor efficiency and the decay of air-conditioning system ability.
Practical novel content
The utility model proposes a kind of screw compressor oil return control system, by oil return to the scroll compression chamber of compressor, operational efficiency, the reliability of compressor can be significantly improved, and the complete machine capability of air-conditioning system, efficiency, when air-conditioning system is run, compressor efficiency and ability improve.
The purpose of this utility model realizes by following technical scheme:
A kind of screw compressor oil return control system, it includes screw compressor and oil separator.
The screw compressor assembly that described screw compressor includes housing and is installed in housing, screw compressor assembly comprises frame, fixed scroll, motion vortex dish, bent axle and motor, fixed scroll and motion vortex dish are installed in the top of frame, fixed scroll and motion vortex dish are bonded scroll compression chamber, the middle part of frame is provided with axis hole, bent axle is through axis hole, in the eccentric axle sleeve of the eccentric part insertion motion vortex dish on bent axle top, the rotor of motor is installed in the bottom of bent axle, the stator of motor is fixedly mounted on the lower section of frame, fixed scroll has the fixed scroll inlet mouth and fixed scroll venting port that are connected with scroll compression chamber, scroll compression chamber is connected by fixed scroll venting port with the interior space of housing, housing is connected with compressor inleting pipe, compressor inleting pipe is through housing, its inner port is connected to fixed scroll inlet mouth, housing below frame is provided with venting port and is externally connected with compressor exhaust pipe.
Described oil separator is provided with oil separator inlet mouth, oil separator venting port and oil separator oil outlet, and compressor air-discharging pipe end pipe is connected to the oil separator inlet mouth of oil separator, and oil separator venting port is for being connected in series the refrigerant pipe of refrigeration system.
The oil supply hole that the fixed scroll of described screw compressor is provided with scroll compression chamber is connected, oil supply hole is positioned at the compression section end in scroll compression chamber, and (the front section in scroll compression chamber is inspiratory limb, stage casing is compression section, rear section is exhaust section, fixed scroll venting port is positioned at exhaust section), connecting oil inlet pipe outside oil supply hole, oil inlet pipe is connected logical through housing, its external port by used oil pipe with the oil separator oil outlet of oil separator.
Prioritization scheme, the utility model includes oil return supplementary unit, and described oil return supplementary unit is contaminant filter and microcapillary tube serial connection, and the two ends of oil return supplementary unit are serially connected with on used oil pipe.
Further prioritization scheme, the utility model also comprises interchanger, and interchanger has low temperature path and high temperature channel, and the high temperature channel of interchanger is serially connected with on the used oil pipe of nearly oil inlet pipe end.
Further prioritization scheme, the utility model also includes magnetic valve, and magnetic valve is serially connected with on used oil pipe.
During use, the utility model is serially connected with on the refrigerant pipe of refrigeration system by oil separator venting port and inlet pipe, screw compressor work and when being vented, refrigerator oil enters oil separator with refrigerant, it is vented rear screw compressor and starts air-breathing, to air-breathing later stage scroll compression chamber, oil supply hole is open in suction side, and the refrigerator oil that oil separator is isolated enters the scroll compression chamber of screw compressor through used oil pipe and oil inlet pipe.
The utility model has following substantive distinguishing features and progress:
1, in the utility model, refrigerator oil directly or is back to the scroll compression chamber of compressor by oil return supplementary unit, now the breathing process of compressor completes (scroll compression chamber and suction muffler are separated), oil return neither occupy aspirated volume also can not heated getter side refrigerant and inspiratory volume is increased, thus there is not the phenomenon that oil return enters the suction refrigerant amount that causes in compressor air suction chamber and reduces. Thus, it is advantageous that: the raising of compressor volumetric efficiency and air-conditioning system ability, the overall efficiency of air-conditioning system improves.
2, between the refrigerator oil (being generally more than 55 DEG C) of high temperature and compressor scroll compression chamber, the temperature difference is less, thus obviously reduces the harmful overheated of compressor. Thus, it is advantageous that: compressor is more reliable and more stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of screw compressor of the present utility model.
Fig. 2 is a kind of structural representation of the present utility model.
Fig. 3 is another kind of structural representation of the present utility model.
Fig. 4 is another structural representation of the present utility model.
Fig. 5 is the B-B sectional view (air-breathing oil return state) of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing to further explanation of the present utility model.
Embodiment 1
With reference to figure 1 and Fig. 2, a kind of screw compressor oil return control system, it includes screw compressor 1 and oil separator 6.
The screw compressor assembly that described screw compressor 1 includes housing 12 and is installed in housing 12, screw compressor assembly comprises frame 4, fixed scroll 2, motion vortex dish 3, bent axle 5 and motor, fixed scroll 2 and motion vortex dish 3 are installed in the top of frame 4, fixed scroll 2 and motion vortex dish 3 are bonded scroll compression chamber, the middle part of frame 4 is provided with axis hole, bent axle 5 is through axis hole, the eccentric part 51 on bent axle 5 top inserts in the eccentric axle sleeve of motion vortex dish 3, the rotor 42 of motor is installed in the bottom of bent axle 5, the stator 41 of motor is fixedly mounted on the lower section of frame 4, fixed scroll 2 has the fixed scroll inlet mouth and fixed scroll venting port 21 that are connected with scroll compression chamber, fixed scroll venting port 21 is positioned at and is connected with the space 20 of housing 12 in scroll compression chamber in the middle part of fixed scroll 2, housing 12 is connected with compressor inleting pipe 11, compressor inleting pipe 11 is through housing 12, its inner port is connected to fixed scroll inlet mouth, housing 12 below frame is provided with venting port and is externally connected with compressor exhaust pipe 10.
Described oil separator 6 is provided with oil separator inlet mouth 61, oil separator venting port 62 and oil separator oil outlet 60, compressor exhaust pipe 10 end pipe is connected to the oil separator inlet mouth 61 of oil separator 6, and oil separator venting port 62 is for being connected in series the refrigerant pipe of refrigeration system.
The fixed scroll 2 of described screw compressor 1 is provided with the oil supply hole 22 being connected with scroll compression chamber, oil supply hole 22 is positioned at the compression section end (namely near fixed scroll venting port 21) in scroll compression chamber, oil supply hole 22 is outer connects oil inlet pipe 23, and oil inlet pipe 23 is connected logical through housing 12, its external port by used oil pipe with the oil separator oil outlet 60 of oil separator 6.
During use, the utility model is serially connected with on the refrigerant pipe of refrigeration system by oil separator venting port 62 and inlet pipe 11, when screw compressor 1 works, the oil supply hole 22 of compression stage is closed by the dynamic scrollwork of motion vortex dish 3, refrigerator oil with refrigerant from determining dish venting port 21 discharge, arrive exhaust outlet of compressor 10 discharge compressor, enter oil separator 6, after gaseous coolant is separated with liquid cryogenic machine oil, liquid cryogenic machine oil is owing to gravity settling is bottom oil separator; Screw compressor 1 enters expiratory phase subsequently, the dynamic scrollwork of motion vortex dish 3 leaves oil supply hole 22(such as Fig. 5), at this moment owing to the pressure in scroll compression chamber is lower than the pressure (exhaust pressure) in oil separator, under differential pressure action, refrigerator oil enters the scroll compression chamber of screw compressor 1 through used oil pipe and oil inlet pipe 23, and scroll compression chamber enters again compression stage subsequently. So far, refrigerator oil completes " discharging separation oil return compression chamber again to discharge " such process. Because oil return neither occupy aspirated volume also can not heated getter chamber refrigerant and inspiratory volume is increased, thus there is not the phenomenon that oil return enters the suction refrigerant amount that causes in compressor air suction chamber and reduces. On the other hand, between the refrigerator oil (being generally more than 55 DEG C) of high temperature and compressor scroll compression chamber, the temperature difference is less, can obviously reduce the harmful overheated of compressor.
Embodiment 2
In conjunction with reference to figure 3, the difference of the present embodiment and embodiment 1 is: described screw compressor oil return control system also includes oil return supplementary unit and magnetic valve 8, described oil return supplementary unit is by the pipe serial connection of contaminant filter 9 and kapillary 7, the two ends of oil return supplementary unit are serially connected with on used oil pipe, it is connected to oil separator oil outlet 60 by contaminant filter 9 end, kapillary 7 end is connected to oil inlet pipe 23 by used oil pipe, and magnetic valve 8 is serially connected with between contaminant filter 9 and kapillary 7 by the present embodiment.
When air-conditioning system is run, refrigerator oil contained in compressor 1 exhaust isolated by oil separator 6, throttle through contaminant filter 9 impurity screening (contaminant filter 9 plays a part to prevent kapillary 9 from blocking), kapillary 7, finally return to the scroll compression chamber of compressor 1. By selecting suitable kapillary 9, the recirculating oil quantity of system can obtain quantitative control substantially, ensures reliability and the high-performance of compressor oil return, and selecting of magnetic valve, can enable flexibly at any time or close oil separating device. The oil return control system of the present embodiment can effectively improve the overall performance of refrigeration system.
Embodiment 3
With reference to figure 4, the difference of the present embodiment and embodiment 2 is: described screw compressor oil return control system also comprises interchanger 91, interchanger 91 has low temperature path and high temperature channel, and the high temperature channel 93 of interchanger 91 is serially connected with on the used oil pipe of nearly oil inlet pipe 23 end of oil return supplementary unit (can not also adopt oil return supplementary unit and be directly connected in oil separator oil outlet 60). Realize reducing returning-oil temperature by interchanger 91, reach the object of cooling compressor. Interchanger 91 can be plate-type heat exchanger can also be finned heat exchanger or other form interchanger.
Cryogenic freezing machine oil is back in scroll compression chamber and cavity medium temperature and medium pressure (Tm, Pm) refrigerant mixing, thus reduce mixed refrigerant temperature and exhaust temperature reduced, it is to increase compressor reliability. Particularly running under some specific operation such as very low temperature system heat etc., the effect of cooling is more obvious. In addition, low temperature oil return makes the decrease in temperature in the scroll compression chamber of compressor 1, has both added oil viscosity, again reduces the abrasion of mechanical part, and air-conditioning system reliability will improve greatly.
Claims (4)
1. a screw compressor oil return control system, it includes screw compressor (1) and oil separator (6);
The screw compressor assembly that described screw compressor (1) includes housing (12) and is installed in housing (12), screw compressor assembly comprises frame (4), fixed scroll (2), motion vortex dish (3), bent axle (5) and motor, fixed scroll (2) and motion vortex dish (3) are installed in the top of frame (4), fixed scroll (2) and motion vortex dish (3) are bonded scroll compression chamber, the middle part of frame (4) is provided with axis hole, bent axle (5) is through axis hole, in the eccentric axle sleeve of the eccentric part (51) insertion motion vortex dish (3) on bent axle (5) top, the rotor (42) of motor is installed in the bottom of bent axle (5), the stator (41) of motor is fixedly mounted on the lower section of frame (4), fixed scroll (2) has the fixed scroll inlet mouth being connected with scroll compression chamber and fixed scroll venting port (21), scroll compression chamber is connected by fixed scroll venting port (21) with the interior space (20) of housing (12), housing (12) is connected with compressor inleting pipe (11), compressor inleting pipe (11) is through housing (12), its inner port is connected to fixed scroll inlet mouth, housing (12) below frame is provided with venting port and is externally connected with compressor exhaust pipe (10),
Described oil separator (6) is provided with oil separator inlet mouth (61), oil separator venting port (62) and oil separator oil outlet (60), compressor exhaust pipe (10) end pipe is connected to the oil separator inlet mouth (61) of oil separator (6), and oil separator venting port (62) is for being connected in series the refrigerant pipe of refrigeration system;
It is characterized in that: the fixed scroll (2) of described screw compressor (1) is provided with the oil supply hole (22) being connected with scroll compression chamber, oil supply hole (22) is positioned at the compression section end in scroll compression chamber, oil supply hole (22) connects oil inlet pipe (23) outward, and oil inlet pipe (23) is connected logical through housing (12), its external port by used oil pipe with the oil separator oil outlet (60) of oil separator (6).
2. screw compressor oil return control system according to claim 1, it is characterized in that: also include oil return supplementary unit, described oil return supplementary unit is the pipe serial connection of contaminant filter (9) and kapillary (7), and the two ends of oil return supplementary unit are serially connected with on used oil pipe.
3. screw compressor oil return control system according to claim 1, it is characterised in that: also comprising interchanger (91), interchanger (91) has low temperature path and high temperature channel, and the high temperature channel (93) of interchanger (91) is serially connected with on used oil pipe.
4. screw compressor oil return control system according to claim 1 or 2 or 3, it is characterised in that: also including magnetic valve (8), magnetic valve (8) is serially connected with on used oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887283.6U CN205277825U (en) | 2015-01-21 | 2015-11-10 | Scroll compressor oil return control system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015200405807 | 2015-01-21 | ||
| CN201520040580 | 2015-01-21 | ||
| CN201520887283.6U CN205277825U (en) | 2015-01-21 | 2015-11-10 | Scroll compressor oil return control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277825U true CN205277825U (en) | 2016-06-01 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510755767.XA Pending CN105351202A (en) | 2015-01-21 | 2015-11-10 | Oil return control system of scroll compressor |
| CN201520887283.6U Active CN205277825U (en) | 2015-01-21 | 2015-11-10 | Scroll compressor oil return control system |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510755767.XA Pending CN105351202A (en) | 2015-01-21 | 2015-11-10 | Oil return control system of scroll compressor |
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| CN (2) | CN105351202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351202A (en) * | 2015-01-21 | 2016-02-24 | 广州日立压缩机有限公司 | Oil return control system of scroll compressor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665221A (en) * | 2020-12-07 | 2021-04-16 | 珠海格力电器股份有限公司 | Control system and control method for improving energy efficiency of compressor and air conditioner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06103038B2 (en) * | 1986-10-23 | 1994-12-14 | 松下電器産業株式会社 | Scroll gas compressor |
| JPH06100185B2 (en) * | 1987-07-10 | 1994-12-12 | 株式会社日立製作所 | Scroll compressor |
| JPH06193577A (en) * | 1992-12-25 | 1994-07-12 | Hitachi Ltd | Lubrication type closed scroll compressor |
| JP4192158B2 (en) * | 2005-03-24 | 2008-12-03 | 日立アプライアンス株式会社 | Hermetic scroll compressor and refrigeration air conditioner |
| CN105351202A (en) * | 2015-01-21 | 2016-02-24 | 广州日立压缩机有限公司 | Oil return control system of scroll compressor |
-
2015
- 2015-11-10 CN CN201510755767.XA patent/CN105351202A/en active Pending
- 2015-11-10 CN CN201520887283.6U patent/CN205277825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351202A (en) * | 2015-01-21 | 2016-02-24 | 广州日立压缩机有限公司 | Oil return control system of scroll compressor |
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| CN105351202A (en) | 2016-02-24 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 510935 Guangdong city of Guangzhou province Conghua City Ao Avenue Road No. 1086 Patentee after: Johnson of Hitachi Wanbao compressor (Guangzhou) Co. Ltd. Address before: The town of Conghua city Guangzhou city Guangdong province 510470 Patentee before: Hiachi Compressor Products (Guangzhou) Co., Ltd. |