CN204103717U - A kind of energy-efficient screw compressor electric machine assembly - Google Patents
A kind of energy-efficient screw compressor electric machine assembly Download PDFInfo
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- CN204103717U CN204103717U CN201420450201.7U CN201420450201U CN204103717U CN 204103717 U CN204103717 U CN 204103717U CN 201420450201 U CN201420450201 U CN 201420450201U CN 204103717 U CN204103717 U CN 204103717U
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Abstract
The utility model relates to a kind of energy-efficient screw compressor electric machine assembly, the stator core including winding and the rotor matched with described stator, described rotor is installed in described stator, and described rotor offers axis hole, and described axis hole is for installing rotating shaft; The two ends of described stator are wound with coil, are phase insulation between described each circle coil; One end of described stator is provided with lead-out wire wire harness and protector, and the two ends of described rotor are provided with end ring, and described end ring is provided with riveted joint pin, and balance columns is connected with end ring by described riveted joint pin; The external diameter ratio of described stator and described rotor is no more than 2:1.Compared with existing common motor, after the high efficiency motor adopting the utility model to provide, the power loss of motor can decline 15% ~ 25%, and the efficiency of motor can improve 2.5% ~ 4%; Meanwhile, the single stage compress of high efficiency motor, than high, can be taked exclusive economizer structure, have good energy saving during worst cold case.
Description
Technical field
The utility model relates to a kind of motor, specifically relates to a kind of energy-efficient screw compressor electric machine assembly.
Background technology
In recent years, the coefficient of performance (COP value) of compressor, from about 96 ~ 110, brings up to about 135 ~ 160; The gas transmission coefficient improving compressor will directly affect the actual output of gas of compressor.For small-sized totally-enclosed formula compressor, how to improve volume index and temperature index is vital.In other words, volume index is mainly relevant with polytropic expansion index with pressure ratio, relative clearance volume; Relative clearance volume is less, and under identical pressure ratio and expansion index, volume index is larger.For compressor, when clearance volume is mainly in outer dead point by piston, the volume of the volume between piston-top surface and valve plate bottom surface and air valve passage determines.But the former has been designed into the degree that can reduce again hardly at present, and ratio shared by the latter is very large; For reducing this part volume, on the basis of traditional flat valve plate, there is the valve plate of spill exhaust valve port structure.
Under same cylinder volume, adopt recessed valve plate than adopting flat valve plate clearance volume and about reduce by 35 ~ 40%.As can be seen here, the increase of recessed valve plate to compressor air-discharging amount is considerable.In addition, in small-sized totally-enclosed compressor, temperature coefficient is also very important on the impact of gas transmission coefficient.Cold-producing medium, from entering compressor housing, before compression starts in the cylinder, will be subject to the heating of high-temperature gas and contacted each wall in shell, thus causes gas suction condition to change.
Cold-producing medium enter the cylinder temperature rise started when compressing exceeded refrigerant gas compression at the end of temperature rise.In order to reduce suction superheat, improve temperature coefficient, in recent years, extensively adopt directly or quasi-divect charge mode, adopt the aluminium alloy compression casting cylinder cap that heat conductivility is good simultaneously in small-sized totally-enclosed compressor, this is conducive to cylinder heat radiation.Direct or quasi-divect charge adopts resistant to elevated temperatures PBT engineering plastics to manufacture inhaling silencer, the air intake duct of import as far as possible on housing of inhaling silencer, the outlet of muffler is directly connected with valve plate air inlet, greatly can reduce the superheating ratio of suction gas like this, thus improve T.Temperature coefficient can be calculated as follows: T=Tso/a1Tk+b1#, in formula: #=Tso-To; Tso suction temperature; To evaporating temperature.Coefficient a1 and b1 is depending on compressor output size, physical dimension and cooling condition.
Summary of the invention
The deficiency such as large for the motor power consumption existed in prior art, efficiency is low, the purpose of this utility model is by adopting low iron loss, the silicon steel sheet of high magnetic strength, optimize design of electrical motor (the hermetic compressor loss of electric machine is iron loss and copper loss mainly), use measures such as running electric capacity simultaneously, a kind of energy-efficient screw compressor electric machine assembly is provided.
The technical scheme that the utility model technical solution problem adopts is: a kind of energy-efficient screw compressor electric machine assembly, the stator core including winding and the rotor matched with described stator, described rotor is installed in described stator, described rotor offers axis hole, and described axis hole is for installing rotating shaft; The two ends of described stator are wound with coil, are phase insulation between described each circle coil; One end of described stator is provided with lead-out wire wire harness and protector, and the two ends of described rotor are provided with end ring, and described end ring is provided with riveted joint pin, and balance columns is connected with end ring by described riveted joint pin; The external diameter ratio of described stator and described rotor is no more than 2:1.
Further, the two ends of described stator are provided with several insulation tanks, and described coil is set around in described insulation tank; The outer end of described insulation tank is equipped with an insulation tank lid.
Further, the outside of described each insulation tank lid all adopts the colligation of polyester line fastening.
Further, the insulation distance between described coil and stator core is greater than 2.4mm.
Preferably, described stator core carried out barffing process before die casting.
Preferably, described stators and rotators all adopts the silicon steel sheet of low iron loss, high magnetic strength.
The beneficial effects of the utility model are: compared with prior art, the screw compressor electric machine assembly that the utility model provides, adopts the silicon steel sheet of low iron loss, high magnetic strength as material foundation, optimizes design of electrical motor simultaneously, use and run electric capacity, making motor obtain efficiency can reach 82% ~ 88%.Compared with existing common motor, after the high efficiency motor adopting the utility model to provide, the power loss of motor can decline 15% ~ 25%, and the efficiency of motor can improve 2.5% ~ 4%; Meanwhile, the single stage compress of high efficiency motor, than high, can be taked exclusive economizer structure, have good energy saving during worst cold case.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is left view of the present utility model;
Fig. 3 is the structural representation of stator in the utility model;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is the partial schematic diagram of a wherein circle coil in Fig. 4;
Fig. 6 is the partial schematic diagram of lead-out wire wire harness in Fig. 4;
Fig. 7 is the structural representation of the utility model rotor;
Fig. 8 is the left view of Fig. 7;
Fig. 9 is the right view of Fig. 7;
1-end ring; 2-balance columns; 3-stator; 4-rotor; 5-axis hole; 6-lead-out wire wire harness; 7-coil; 8-end banding line; 9-phase insulation; 10-protector; 11-insulation tank lid; 12-insulation tank; 13-swagelok; 14-rivets pin.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, a kind of energy-efficient screw compressor electric machine assembly, the stator core 3 including winding and the rotor 4 matched with described stator, described rotor 4 is installed in described stator 3, described rotor 4 offers axis hole 5, and described axis hole 5 is for installing rotating shaft.
In the present embodiment, as illustrated in figures 3-6, the two ends of described stator 3 are wound with coil 7, are phase insulation 9 between described each circle coil 7.One end of described stator 3 is provided with lead-out wire wire harness 6 and protector 10, and the end near stator in described lead-out wire wire harness is provided with swagelok 13, and described lead-out wire comprises lead-out wires of coil and motor lead-out wire; Described each lead-out wire adopts at least two tight rings to tighten.The two ends of described stator 3 are respectively provided with 30 insulation tanks 12, and described coil 7 is set around in described insulation tank 12; The outer end of described insulation tank 12 is equipped with an insulation tank lid 11; The outside of described each insulation tank lid 11 all adopts polyester line 8 colligation fastening; Slot wedge, insulating material and wiring can not exceed the inner side of iron core internal diameter.Insulation distance between described coil 7 and stator core 3 is greater than 2.4mm.Described stator core 3 carried out barffing process before die casting.Described stator 3 needs to pass through voltage-withstand test: should be able to by the sine wave alternating current of 50Hz, and test voltage specification is 1800V/1min or 2200/1S, Leakage Current≤5mA.Described stator 3 also needs to be tested by impulse wave: testing equipment adopts Huzhou Lian Xin automation equipment Co., Ltd " LXST-701A4 motor comprehensive test platform ", respectively to A, B, it is that 6000V impulse waveform compares that the reference waveform that C phase sets applies peak value to product to be tested, and whether qualified automatically judge by difference in areas 25% standard.
As shown in figs. 7-9, the two ends of described rotor 4 are provided with end ring 1, and described end ring 1 is provided with riveted joint pin 14, and balance columns 2 is connected with end ring 1 by described riveted joint pin 14; Like this, balance columns 2 just can riveting accurately on end ring 1, improve the degree of balance of rotor 4, reduce noise and the vibration of motor.End ring 1 and balance columns 2 answer pore-free, crackle, the phenomenon such as bending.The skewed slot of rotor 4 is zero, and straight trough must not indentation, and sliver is without disconnected bar phenomenon; The stacking factor of rotor 4 is 0.95, and endoporus degree of flicking must not more than 1.0.
The electric machine assembly that the utility model provides is applicable to screw compressor, and the external diameter ratio of described stator 3 and described rotor 4 is no more than 2:1.
The screw compressor electric machine assembly that the utility model provides, adopts the silicon steel sheet of low iron loss, high magnetic strength as material foundation, optimizes design of electrical motor simultaneously, and use and run electric capacity, making motor obtain efficiency can reach 82% ~ 88%.Compared with existing common motor, after the high efficiency motor adopting the utility model to provide, the power loss of motor can decline 15% ~ 25%, and the efficiency of motor can improve 2.5% ~ 4%; Meanwhile, the single stage compress of high efficiency motor, than high, can be taked exclusive economizer structure, have good energy saving during worst cold case.
Claims (6)
1. an energy-efficient screw compressor electric machine assembly, the stator core including winding and the rotor matched with described stator, described rotor is installed in described stator, and described rotor offers axis hole, and described axis hole is for installing rotating shaft; It is characterized in that the two ends of described stator are wound with coil, is phase insulation between described each circle coil; One end of described stator is provided with lead-out wire wire harness and protector, and the two ends of described rotor are provided with end ring, and described end ring is provided with riveted joint pin, and balance columns is connected with end ring by described riveted joint pin; The external diameter ratio of described stator and described rotor is no more than 2:1.
2. a kind of energy-efficient screw compressor electric machine assembly as claimed in claim 1, it is characterized in that the two ends of described stator are provided with several insulation tanks, described coil is set around in described insulation tank; The outer end of described insulation tank is equipped with an insulation tank lid.
3. a kind of energy-efficient screw compressor electric machine assembly as claimed in claim 2, is characterized in that the outside of described each insulation tank lid all adopts the colligation of polyester line fastening.
4. a kind of energy-efficient screw compressor electric machine assembly as claimed in claim 1 or 2, is characterized in that the insulation distance between described coil and stator core is greater than 2.4mm.
5. a kind of energy-efficient screw compressor electric machine assembly as claimed in claim 1, is characterized in that described stator core carried out barffing process before die casting.
6. a kind of energy-efficient screw compressor electric machine assembly as claimed in claim 1, is characterized in that described stators and rotators all adopts the silicon steel sheet of low iron loss, high magnetic strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450201.7U CN204103717U (en) | 2014-08-11 | 2014-08-11 | A kind of energy-efficient screw compressor electric machine assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450201.7U CN204103717U (en) | 2014-08-11 | 2014-08-11 | A kind of energy-efficient screw compressor electric machine assembly |
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| Publication Number | Publication Date |
|---|---|
| CN204103717U true CN204103717U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420450201.7U Active CN204103717U (en) | 2014-08-11 | 2014-08-11 | A kind of energy-efficient screw compressor electric machine assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130273A (en) * | 2018-10-31 | 2020-05-08 | 安徽美芝精密制造有限公司 | Distributed coil motor and compressor and air conditioning system with same |
-
2014
- 2014-08-11 CN CN201420450201.7U patent/CN204103717U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130273A (en) * | 2018-10-31 | 2020-05-08 | 安徽美芝精密制造有限公司 | Distributed coil motor and compressor and air conditioning system with same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |