CN209308967U - A kind of screw compressor rotor and screw compressor - Google Patents

Abstract

The utility model proposes a kind of screw compressor rotors comprising has rotor core, rotor core center has multiple magnetic slots with mounting shaft hole, edge；Particularly, the edge of rotor core has intercommunicating pore, and intercommunicating pore is to be penetrated through by one end of rotor core to the slotted hole of the other end or clear opening and between adjacent 2 magnetic slots；The clear opening set that clear opening can be single clear opening or is combined by 2~4 clear openings；It can have intercommunicating pore between per adjacent 2 magnetic slots.A kind of screw compressor is proposed again, it includes shell and is installed on the intracorporal upper bracket of shell, fixed scroll, orbiter, crankshaft, motor and lower bracket, particularly, rotor is above-mentioned screw compressor rotor, and rotor is set on crankshaft by the mounting shaft hole of rotor core.The amount that the refrigeration oil with refrigerant discharge can be effectively reduced by the rotor of the utility model, reduces the loss of refrigeration oil in compressor, and screw compressor is made to have the characteristics that service life is permanent and operational reliability is high.

Description

A kind of screw compressor rotor and screw compressor

Technical field

The utility model relates to screw compressors, are particularly used for rotor core and the whirlpool of screw compressor rotor Revolve compressor.

Background technique

Currently, a kind of screw compressor, as application No. is disclosed in 200820205599.2 comprising have shell, upper branch Frame, fixed scroll, orbiter, lower bracket, crankshaft, motor, upper bracket and in shell bottom oil sump.Wherein quiet vortex Disk and orbiter are positioned above upper bracket and form compression chamber；Space is by fixed scroll and upper bracket every being divided into shell Discharge chamber and motor cavity, fixed scroll and upper bracket periphery, which are equipped with, is more than 3 exhaust passages, and exhaust passage is by discharge chamber and motor Chamber connection, orbiter are installed on the eccentric part on crankshaft top, and the rotor of motor is installed on the near middle of crankshaft, motor Stator is fixedly installed in below upper bracket, and the lower part of crankshaft is equipped with the oil pump of insertion oil sump.The compressor of this structure, row The high-voltage high-speed airflow of air cavity enters motor cavity by multiple exhaust passages, since the total sectional area of exhaust passage greatly increases, The circulation area of cold media gas with oil is increased, and flowing velocity drops to 1.0m/s hereinafter, Oil-gas Separation is realized, under separation Next refrigeration oil is returned directly to freezing oil sump, realizes the loss for reducing refrigerator oil in shell, raising compressor uses reliably The purpose of property and refrigerating efficiency.But to improve compressor work efficiency, the separation and recovery amount of refrigeration oil is still necessary further mentioning It is high.

Summary of the invention

The purpose of this utility model is to propose a kind of screw compressor rotor, and be mounted with the vortex of the rotor Compressor can effectively reduce the amount of the refrigeration oil with refrigerant discharge by the rotor, reduce the damage of refrigeration oil in compressor Consumption makes screw compressor have the characteristics that service life is permanent and operational reliability is high.

The purpose of this utility model can be achieved through the following technical solutions:

A kind of screw compressor rotor comprising have rotor core, the rotor core is cylindrical structure, rotor The center of iron core has multiple equally distributed magnetic slots with mounting shaft hole, edge；It is characterized by: the rotor core Edge has intercommunicating pore, and the intercommunicating pore is to be penetrated through to the slotted hole of the other end or clear opening and be located at by one end of rotor core Between adjacent 2 magnetic slots.

Prioritization scheme, clear opening described in the utility model are single clear opening or are combined by 2~4 clear openings straight Through-hole set.

Scheme is advanced optimized, there is intercommunicating pore between every adjacent 2 magnetic slots in the utility model.

A kind of screw compressor comprising have shell and be installed on the intracorporal screw compressor of shell, screw compressor Component includes upper bracket, fixed scroll, orbiter, crankshaft, motor and lower bracket, and fixed scroll and orbiter are installed on The top of bracket constitutes scroll compression chamber, in shell space by fixed scroll and upper bracket every being divided into discharge chamber and motor cavity, it is quiet Scroll plate is equipped with the exhaust passage for being connected to discharge chamber with motor cavity with upper bracket periphery, and the middle part of upper bracket is equipped with upper bracket axis Hole, the middle part of lower bracket are equipped with lower bracket axis hole, the top of crankshaft pass through upper bracket axis hole and by bearing be installed on upper bracket, Its eccentric part is inserted into the excentric sleeve of orbiter, and crankshaft lower part passes through lower bracket axis hole and is equipped with oil pump, oil pump insertion In the freezing oil sump of housing bottom, the rotor of the near middle installation motor of crankshaft, the stator of motor is fixedly mounted on upper bracket Lower section, fixed scroll has the compression chamber exhaust outlet and compression chamber air inlet that are connected to scroll compression chamber, compression chamber exhaust outlet Scroll compression chamber is connected to discharge chamber, shell is connected with compressor inleting pipe, and compressor inleting pipe passes through shell, its inner port It is connected to compression chamber air inlet, the shell below upper bracket is equipped with the compressor exhaust pipe of connection energization machine cavity；It is characterized by: The rotor of the motor is above-mentioned screw compressor rotor, and rotor is set on crankshaft by the mounting shaft hole of rotor core.

The utility model has following substantive distinguishing features and progress: in the shell of the screw compressor of the utility model, oil Oxygen mixture flow to the space of motor lower portion along the gap of motor stator and shell, and then mixed gas passes through on rotor Intercommunicating pore and rotor and stator gap flow direction motor chamber, wherein the intercommunicating pore on rotor makes mixed gas Circulation area increase, reduced velocity flow, most refrigeration oil can isolate from mixed gas, be recycled to housing bottom It freezes in oil sump, greatly reduces the amount of the refrigeration oil with refrigerant discharge, overcome freezing in compression case body in the prior art The problem of influencing screw compressor operation is easily discharged in oil with refrigerant, plays and improves the service life of screw compressor and reliable for operation The effect of property.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the screw compressor of the utility model.

Fig. 2 is the structural schematic diagram of the rotor core of rotor in Fig. 1 structure.

Fig. 3 is another structural schematic diagram of the rotor core of rotor in the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

Embodiment 1

With reference to Fig. 1 and Fig. 2, a kind of screw compressor comprising the screw compressor for having shell 1 and being installed in shell 1 Component, screw compressor include upper bracket 4, fixed scroll 2, orbiter 3, crankshaft 5, motor and lower bracket 7.

The top that fixed scroll 2 and orbiter 3 are installed on upper bracket 4 constitutes scroll compression chamber, and space is quiet in shell 1 Scroll plate 2 and upper bracket 4 are equipped with discharge chamber every being divided into discharge chamber 20 and motor cavity 100, fixed scroll 2 and 4 periphery of upper bracket 20 exhaust passages being connected to motor cavity 100.

The middle part of upper bracket 4 is equipped with upper bracket axis hole, and the middle part of lower bracket 7 is equipped with lower bracket axis hole, and the top of crankshaft 5 is worn It crosses upper bracket axis hole and upper bracket 4 is installed on by bearing, its eccentric part 51 is inserted into the excentric sleeve of orbiter 3, crankshaft 5 Lower part passes through lower bracket axis hole and is equipped with oil pump 8, and oil pump 8 is inserted into the freezing oil sump 9 of 1 bottom of shell.

The rotor 6 of motor includes rotor core 61, and rotor core 61 is cylindrical structure, the center tool of rotor core 61 There are mounting shaft hole 62, edge that there are multiple equally distributed magnetic slots 63；The edge of rotor core 61 is per adjacent 2 magnetic slots 63 Between also there is intercommunicating pore, the intercommunicating pore is to be penetrated through by one end of rotor core 61 to the slotted hole 64 of the other end, rotor 6 by The mounting shaft hole 62 of rotor core 61 is set in the near middle of crankshaft 5.The stator 60 of motor is fixedly mounted under upper bracket 4 Side.

Fixed scroll 2 has the compression chamber exhaust outlet 21 and compression chamber air inlet being connected to scroll compression chamber, compression chamber row Scroll compression chamber is connected to by port 21 with discharge chamber 20, and shell 1 is connected with compressor inleting pipe 11, and compressor inleting pipe 11 passes through Shell 1, its inner port are connected to compression chamber air inlet, and the shell 1 of 4 lower section of upper bracket is equipped with the compression of connection energization machine cavity 100 Machine exhaust pipe 10.

In the shell 1 of the screw compressor of the present embodiment, air-fuel mixture gas clearance flow between motor stator 60 and shell 1 To the space of motor lower portion, then mixed gas passes through the intercommunicating pore and rotor 6 and stator 60 on rotor 6 Gap flow direction motor chamber, wherein the intercommunicating pore on rotor 6 increases the circulation area of mixed gas, reduced velocity flow, increases The disengaging time of refrigerant and refrigeration oil, enables the refrigeration oil in mixed gas to be sufficiently separated out, is recycled to 1 bottom of shell Freezing oil sump 9 in, greatly reduce with refrigerant discharge refrigeration oil amount, overcome cold in compression case body in the prior art The problem of influencing screw compressor operation is easily discharged in frozen oil with refrigerant, plays the service life for improving screw compressor and operation can By the effect of property.

Embodiment 2

With reference to Fig. 3, the screw compressor of the present embodiment the difference from embodiment 1 is that: the rotor 6 of motor in the present embodiment Rotor core 61 on be clear opening set that 4 clear openings 65 are combined, institute per the intercommunicating pore between adjacent 2 magnetic slots 63 Clear opening 65 is stated to be penetrated through by one end of rotor core 61 to the other end.The screw compressor of the present embodiment is played by clear opening 65 The effect for separating the refrigeration oil in mixed gas, improves the service life and operational reliability of screw compressor.

Claims (4)

1. a kind of screw compressor rotor comprising have rotor core (61), the rotor core (61) is cylindrical knot The center of structure, rotor core (61) has multiple equally distributed magnetic slots (63) with mounting shaft hole (62), edge；Its feature Be: the edge of the rotor core (61) have intercommunicating pore, the intercommunicating pore be by rotor core (61) one end penetrate through to The slotted hole (64) or clear opening (65) of the other end and between adjacent 2 magnetic slots (63).

2. screw compressor rotor according to claim 1, it is characterised in that: the clear opening (65) is single straight Through-hole or the clear opening set being combined by 2~4 clear openings.

3. screw compressor rotor according to claim 1, it is characterised in that: per adjacent 2 magnetic slots (63) it Between have intercommunicating pore.

4. a kind of screw compressor comprising the screw compressor for having shell (1) and being installed in shell (1), scroll compression Contracting thermomechanical components include upper bracket (4), fixed scroll (2), orbiter (3), crankshaft (5), motor and lower bracket (7), quiet vortex The top that disk (2) and orbiter (3) are installed on upper bracket (4) constitutes scroll compression chamber, and shell (1) interior space is by fixed scroll (2) and upper bracket (4) is every being divided into discharge chamber (20) and motor cavity (100), and fixed scroll (2) and upper bracket (4) periphery are equipped with will The middle part of the exhaust passage that discharge chamber (20) is connected to motor cavity (100), upper bracket (4) is equipped with upper bracket axis hole, lower bracket (7) Middle part be equipped with lower bracket axis hole, the top of crankshaft (5) pass through upper bracket axis hole and by bearing be installed on upper bracket (4), its Eccentric part (51) is inserted into the excentric sleeve of orbiter (3), and crankshaft (5) lower part passes through lower bracket axis hole and is equipped with oil pump (8), in the freezing oil sump (9) of oil pump (8) insertion shell (1) bottom, the rotor (6) of the near middle installation motor of crankshaft (5), The stator (60) of motor is fixedly mounted on the lower section of upper bracket (4), and fixed scroll (2) has the compression being connected to scroll compression chamber Scroll compression chamber is connected to by chamber exhaust outlet (21) and compression chamber air inlet, compression chamber exhaust outlet (21) with discharge chamber (20), shell (1) be connected with compressor inleting pipe (11), compressor inleting pipe (11) pass through shell (1), its inner port be connected to compression chamber into Port, the shell (1) below upper bracket (4) are equipped with the compressor exhaust pipe (10) of connection energization machine cavity (100)；Its feature exists In: the rotor (6) of the motor is claims 1 or 2 or the 3 screw compressor rotors, and rotor (6) is by rotor core (61) mounting shaft hole (62) is set on crankshaft (5).