CN203430777U - Open-type single-machine two-stage high-speed screw refrigeration compressor - Google Patents
Open-type single-machine two-stage high-speed screw refrigeration compressor Download PDFInfo
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- CN203430777U CN203430777U CN201320490716.5U CN201320490716U CN203430777U CN 203430777 U CN203430777 U CN 203430777U CN 201320490716 U CN201320490716 U CN 201320490716U CN 203430777 U CN203430777 U CN 203430777U
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Abstract
The utility model belongs to open-type single-machine two-stage high-speed screw refrigeration compressors. The utility model adopts the technical scheme that the open-type single-machine two-stage high-speed screw refrigeration compressor comprises a high-pressure stage of the single-machine two-stage screw refrigeration compressor and a low-stage of the single-machine two-stage screw refrigeration compressor, and is characterized in that a low-pressure stage air exhaust end seat 9 is connected with a high-pressure stage air suction end seat 7 to form a high and low-pressure stage connector body 8; moreover, the high and low-pressure stage connector body 8 is connected with an air supplement opening 17; both a low-pressure stage male rotor 11 and a high-pressure stage male motor 4 are arranged on an extending shaft 15; an extending shaft end 19 is connected with a motor through a shaft coupling. The open-type single-machine two-stage high-speed screw refrigeration compressor has the beneficial effects that the lowest evaporation temperature of the compressor can reach -60 DEG C, the design pressure reaches 2.8 Mpa, and the compressor can operate effectively, safely and reliably in an energy-saving way at a low temperature by replacing the conventional two-machine two-stage combination machine unit. The compressor has the characteristics of compact structure, small occupied floor area, and convenience in operation.
Description
Technical field
The present invention relates to the F25B refrigerator on International Classification of Patents (IPC) through retrieval, and chiller plant or system classification, especially belong to opening type single machine two-stage high-speed screws refrigeration compressor.
Background technique
When Singe stage screw compressor moves under worst cold case, during due to operation, pressure ratio is large, pressure reduction is large, and compressor internal leakage increases, and volumetric efficiency reduces, and refrigerating efficiency is reduced greatly.Meanwhile, high compression ratio, by causing the delivery temperature of helical-lobe compressor to rise, causes compressor reliability to decline.For improving refrigerating efficiency and the reliability of helical-lobe compressor in cryogenic refrigerating system, the double-machine two-stages that adopt two screw refrigeration compressor units to become match refrigeration system more at present.Two-shipper matches pressure ratio and the pressure reduction that effectively reduces compressor in cryogenic system, has greatly improved the operating conditions of compressor, has improved refrigerating efficiency and the reliability of system.Yet double-machine two-stage system forms owing to adopting two compressors and two motors to match, from initial investment, the system that its cost obviously will form higher than a Singe stage screw compressor; Moreover boundary dimension is large, need larger installing space, oil-way system is complicated, fault point is many, operation, safeguard and maintenance all comparatively complicated, these factors have all restricted application and the popularization that two-shipper matches system.
Summary of the invention
The object of the present invention is to provide a kind of opening type single machine two-stage high-speed screws refrigeration compressor, make can realize double-machine two-stage and match that system high efficiency is energy-conservation, the feature of safe operation under worst cold case, can reduce to greatest extent initial investment cost again, and set structure is compact, floor space is little, operation and maintenance is convenient.
The technical solution used in the present invention is: the high pressure stage that it comprises single machine two-stage screw bolt refrigerant compressor and the low pressure stage of single machine two-stage screw bolt refrigerant compressor, wherein, the high pressure stage of described single machine two-stage screw bolt refrigerant compressor comprises high pressure stage energy indicator 1, high pressure stage suction end base 7, high pressure stage body 6, high pressure stage female rotor 5, high pressure stage male rotor 4, high pressure stage exhausting end base 3 and high-pressure exhaust 2; Described single machine two-stage screw bolt refrigerant compressor low pressure stage comprises low pressure stage energy indicator 16, low pressure stage suction end base 13, low pressure stage body 10, low pressure stage female rotor 12, low pressure stage male rotor 11, low pressure stage exhausting end base 9, low pressure air suction mouth 18 and shaft seal 14; It is characterized in that: described high pressure stage female rotor 5 and high pressure stage male rotor 4 are to be contained in high pressure stage body 6, form high pressure stage active chamber with high pressure stage suction end base 7, high pressure stage exhausting end base 3; Described low pressure stage female rotor 12 and low pressure stage male rotor 11 are to be contained in low pressure stage body 10, form low pressure stage active chamber with low pressure stage suction end base 13, low pressure stage exhausting end base 9; Described low pressure stage exhausting end base 9 and high pressure stage suction end base 7 are connected to form high low pressure level connecting body 8, and high low pressure level connecting body 8 is connected with gas supplementing opening 17; Described low pressure stage male rotor 11 and high pressure stage male rotor 4 are all contained on outrigger shaft 15, and overhanging axle head 19 is connected with motor by coupling.
Beneficial effect of the present invention is: because minimum evaporating temperature of the present invention can reach-60 ℃, design pressure reaches 2.8Mpa, and alternative traditional double-machine two-stage matches unit, energy-efficient, safe and reliable operation under worst cold case.Be characterized in that compact structure, floor space are little, easy to operate; More common twin-stage compression system has reduced a set of oil cooler, and reduce fault point, and reliability improves; With a motor direct-drive one secondary screw rod, guarantee just to arbitrarily downgrade helical-lobe compressor synchronous operation; Only be equipped with a motor, rated power is generally less than the rated power sum of two motors in Two-stage Compression system, than double-machine two-stage, matches energy saving of system, and initial investment is few.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Fig. 2 is profile schematic diagram of the present invention.
Wherein: 1, high pressure stage energy indicator 2, high-pressure exhaust 3, high pressure stage exhausting end base 4, high pressure stage male rotor 5, high pressure stage female rotor 6, high pressure stage body 7, high pressure stage suction end base 8, high low pressure level connecting body 9, low pressure stage exhausting end base 10, low pressure stage body 11, low pressure stage male rotor 12, low pressure stage female rotor 13, low pressure stage suction end base 14, shaft seal 15, outrigger shaft 16, low pressure stage energy indicator 17, gas supplementing opening 18, low pressure air suction mouth 19, overhanging axle head.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is that structure principle chart of the present invention, Fig. 2 are profile schematic diagram of the present invention.The high pressure stage that the present invention comprises single machine two-stage screw bolt refrigerant compressor and the low pressure stage of single machine two-stage screw bolt refrigerant compressor, wherein, the high pressure stage of described single machine two-stage screw bolt refrigerant compressor comprises high pressure stage energy indicator 1, high pressure stage suction end base 7, high pressure stage body 6, high pressure stage female rotor 5, high pressure stage male rotor 4, high pressure stage exhausting end base 3 and high-pressure exhaust 2; Described single machine two-stage screw bolt refrigerant compressor low pressure stage comprises low pressure stage energy indicator 16, low pressure stage suction end base 13, low pressure stage body 10, low pressure stage female rotor 12, low pressure stage male rotor 11, low pressure stage exhausting end base 9, low pressure air suction mouth 18 and shaft seal 14; It is characterized in that: described high pressure stage female rotor 5 and high pressure stage male rotor 4 are to be contained in high pressure stage body 6, form high pressure stage active chamber with high pressure stage suction end base 7, high pressure stage exhausting end base 3; Described low pressure stage female rotor 12 and low pressure stage male rotor 11 are to be contained in low pressure stage body 10, form low pressure stage active chamber with low pressure stage suction end base 13, low pressure stage exhausting end base 9; Described low pressure stage exhausting end base 9 and high pressure stage suction end base 7 are connected to form high low pressure level connecting body 8, and high low pressure level connecting body 8 is connected with gas supplementing opening 17; Described low pressure stage male rotor 11 and high pressure stage male rotor 4 are all contained on outrigger shaft 15, and overhanging axle head 19 is connected with motor by coupling.
The material of the high pressure stage suction end base 7 described in the present invention, high pressure stage body 6, high pressure stage exhausting end base 3, low pressure stage suction end base 13, low pressure stage body 10 and low pressure stage exhausting end base 9 all adopts spheroidal graphite cast iron.
The molded lines of rotor of the high pressure stage female rotor 5 described in the present invention and high pressure stage male rotor 4 is bilateral asymmetric, circular arc and envelope thereof, consists of; Gear ratio is 7:5.
The molded lines of rotor of the low pressure stage female rotor 12 described in the present invention and low pressure stage male rotor 11 is bilateral asymmetric, circular arc and envelope thereof, consists of; Gear ratio is 7:5.
The material of the low pressure stage female rotor 12 described in the present invention, low pressure stage male rotor 11, high pressure stage female rotor 5 and high pressure stage male rotor 4 all adopts forged steel.
Working principle of the present invention is: motor passes through coupling, overhanging axle head 19 is connected with outrigger shaft 15, drive low pressure stage male rotor 11 and high pressure stage male rotor 4 to rotate simultaneously, the refrigerant gas of low-temp low-pressure enters into compressor low pressure stage active chamber by low pressure air suction mouth 18, by low pressure stage exhausting end base 9, be discharged into high low pressure level connecting body 8 after compression, after mixing with the refrigerant gas of interstage cooler from gas supplementing opening 17, enter into the high pressure stage active chamber of compressor, high temperature and high pressure gas after compression enters oil separator by high-pressure exhaust 2, thereby complete the compression process of refrigerant gas.
Claims (5)
1. an opening type single machine two-stage high-speed screws refrigeration compressor, the high pressure stage that it comprises single machine two-stage screw bolt refrigerant compressor and the low pressure stage of single machine two-stage screw bolt refrigerant compressor, wherein, the high pressure stage of described single machine two-stage screw bolt refrigerant compressor comprises high pressure stage energy indicator (1), high pressure stage suction end base (7), high pressure stage body (6), high pressure stage female rotor (5), high pressure stage male rotor (4), high pressure stage exhausting end base (3) and high-pressure exhaust (2); Described single machine two-stage screw bolt refrigerant compressor low pressure stage comprises low pressure stage energy indicator (16), low pressure stage suction end base (13), low pressure stage body (10), low pressure stage female rotor (12), low pressure stage male rotor (11), low pressure stage exhausting end base (9), low pressure air suction mouth (18) and shaft seal (14); It is characterized in that: described high pressure stage female rotor (5) and high pressure stage male rotor (4) are to be contained in high pressure stage body (6), form high pressure stage active chamber with high pressure stage suction end base (7), high pressure stage exhausting end base (3); Described low pressure stage female rotor (12) and low pressure stage male rotor (11) are to be contained in low pressure stage body (10), form low pressure stage active chamber with low pressure stage suction end base (13), low pressure stage exhausting end base (9); Described low pressure stage exhausting end base (9) and high pressure stage suction end base (7) are connected to form high low pressure level connecting body (8), and high low pressure level connecting body (8) is connected with gas supplementing opening (17); It is upper that described low pressure stage male rotor (11) and high pressure stage male rotor (4) are all contained in outrigger shaft (15), and overhanging axle head (19) is connected with motor by coupling.
2. opening type single machine two-stage high-speed screws refrigeration compressor according to claim 1, is characterized in that: the material of described high pressure stage suction end base (7), high pressure stage body (6), high pressure stage exhausting end base (3), low pressure stage suction end base (13), low pressure stage body (10) and low pressure stage exhausting end base (9) all adopts spheroidal graphite cast iron.
3. opening type single machine two-stage high-speed screws refrigeration compressor according to claim 1, is characterized in that: described high pressure stage female rotor (5) and the molded lines of rotor of high pressure stage male rotor (4) are bilateral asymmetric, circular arc and envelope thereof, consist of; Gear ratio is 7:5.
4. opening type single machine two-stage high-speed screws refrigeration compressor according to claim 1, is characterized in that: described low pressure stage female rotor (12) and the molded lines of rotor of low pressure stage male rotor (11) are bilateral asymmetric, circular arc and envelope thereof, consist of; Gear ratio is 7:5.
5. opening type single machine two-stage high-speed screws refrigeration compressor according to claim 1, is characterized in that: the material of described low pressure stage female rotor (12), low pressure stage male rotor (11), high pressure stage female rotor (5) and high pressure stage male rotor (4) all adopts forged steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320490716.5U CN203430777U (en) | 2013-08-13 | 2013-08-13 | Open-type single-machine two-stage high-speed screw refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320490716.5U CN203430777U (en) | 2013-08-13 | 2013-08-13 | Open-type single-machine two-stage high-speed screw refrigeration compressor |
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| Publication Number | Publication Date |
|---|---|
| CN203430777U true CN203430777U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320490716.5U Expired - Lifetime CN203430777U (en) | 2013-08-13 | 2013-08-13 | Open-type single-machine two-stage high-speed screw refrigeration compressor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593867A (en) * | 2016-12-31 | 2017-04-26 | 上海偌托新能源科技有限公司 | Double-permanent-magnet two-level screw compressor |
| CN106989027A (en) * | 2017-06-05 | 2017-07-28 | 珠海格力电器股份有限公司 | Compound compressor |
| CN109236646A (en) * | 2018-10-30 | 2019-01-18 | 西漠能源技术（苏州）有限公司 | A kind of single shaft two-stage screw compressor |
| CN110388320A (en) * | 2019-08-26 | 2019-10-29 | 珠海格力电器股份有限公司 | Two-stage screw compressor and air-conditioner set with balancing axial thrust function |
| CN110397589A (en) * | 2019-08-26 | 2019-11-01 | 珠海格力电器股份有限公司 | Two-stage screw compressor and air-conditioner set with balancing axial thrust function |
| CN110945247A (en) * | 2017-08-25 | 2020-03-31 | 株式会社神户制钢所 | Oil-cooled two-stage screw compressor |
-
2013
- 2013-08-13 CN CN201320490716.5U patent/CN203430777U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593867A (en) * | 2016-12-31 | 2017-04-26 | 上海偌托新能源科技有限公司 | Double-permanent-magnet two-level screw compressor |
| CN106989027A (en) * | 2017-06-05 | 2017-07-28 | 珠海格力电器股份有限公司 | Compound compressor |
| CN106989027B (en) * | 2017-06-05 | 2019-05-24 | 珠海格力电器股份有限公司 | Compound compressor |
| US11286933B2 (en) | 2017-06-05 | 2022-03-29 | Gree Electric Appliances (Wuhan) Co., Ltd | Multi-stage compressor and air conditioner |
| CN110945247A (en) * | 2017-08-25 | 2020-03-31 | 株式会社神户制钢所 | Oil-cooled two-stage screw compressor |
| CN109236646A (en) * | 2018-10-30 | 2019-01-18 | 西漠能源技术（苏州）有限公司 | A kind of single shaft two-stage screw compressor |
| CN110388320A (en) * | 2019-08-26 | 2019-10-29 | 珠海格力电器股份有限公司 | Two-stage screw compressor and air-conditioner set with balancing axial thrust function |
| CN110397589A (en) * | 2019-08-26 | 2019-11-01 | 珠海格力电器股份有限公司 | Two-stage screw compressor and air-conditioner set with balancing axial thrust function |
| CN110397589B (en) * | 2019-08-26 | 2023-10-10 | 珠海格力电器股份有限公司 | Double-stage screw compressor with axial force balancing function and air conditioning unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUJIAN SNOWMAN CO., LTD. Free format text: FORMER OWNER: FUJIAN SNOWMAN COMPRESSOR TECHNOLOGY CO., LTD. Effective date: 20150423 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150423 Address after: 350217 Fujian city of Changle Province Li Ren Industrial Zone Patentee after: FUJIAN SNOWMAN Co.,Ltd. Address before: 350217, Fuzhou City, Fujian province Changle city Fujian Ren Industrial Zone Patentee before: FUJIAN SNOWMAN COMPRESSOR TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |