CN114448166A - Oil-free screw compressor - Google Patents

Oil-free screw compressor Download PDF

Info

Publication number
CN114448166A
CN114448166A CN202011195422.0A CN202011195422A CN114448166A CN 114448166 A CN114448166 A CN 114448166A CN 202011195422 A CN202011195422 A CN 202011195422A CN 114448166 A CN114448166 A CN 114448166A
Authority
CN
China
Prior art keywords
motor
compressor
oil
free screw
cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011195422.0A
Other languages
Chinese (zh)
Inventor
卞显琪
单林峰
李连福
鲁寅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Hanbell Precise Machinery Co ltd
Original Assignee
Shanghai Hanbell Precise Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Hanbell Precise Machinery Co ltd filed Critical Shanghai Hanbell Precise Machinery Co ltd
Priority to CN202011195422.0A priority Critical patent/CN114448166A/en
Publication of CN114448166A publication Critical patent/CN114448166A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0417—Heat exchangers adapted or integrated in the gearing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention provides an oil-free screw compressor which comprises a compressor side and a motor side which are connected, wherein the compressor side comprises a compressor shell, a gear box and a compressor front cover which are sequentially connected, the motor side comprises a motor front cover and a motor shell which are sequentially connected, and a cooling layer is arranged between the gear box and the motor side. The cooling device is arranged between the gear box and the motor side of the oil-free screw compressor, so that the heat of the gear box is prevented from being transferred to the motor side, the heat insulation effect is achieved, and the service life of the compressor is prolonged.

Description

Oil-free screw compressor
Technical Field
The invention relates to a compressor, in particular to an oil-free screw compressor.
Background
Oil-free screw dry compressor's operation leans on motor drive gear, and the gear drives the public female rotor and rotates, and oil-free screw dry compressor exhaust temperature is higher on the one hand, and the heat passes through casing transmission to gear box, and on the other hand, because gear box inner space is little and sealed, adopts the mode of dialling oil to lubricate gear and bearing and can produce great heat. The oil temperature of the gear is too high, the viscosity is reduced, and even the gear is blocked in severe cases. In addition, because the motor runs at a high speed, under a high load, the temperature of the shaft and the rotor can be greatly increased, the temperature of the rotor is too high, and the permanent magnet can be demagnetized, so that the normal operation of the compressor is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an oil-free screw compressor.
The invention solves the technical problems through the following technical scheme:
the utility model provides an oil-free screw compressor, its compressor side and motor side including being connected, the compressor side is including the compressor housing that connects gradually, the gear box, the compressor protecgulum, the motor side is including the motor protecgulum and the motor housing that connect gradually, its characterized in that, the gear box with be equipped with the cooling layer between the motor side. A cooling tank is added at the joint of the motor and the gear box, so that circulating cooling liquid for cooling the motor passes through the joint of the motor and the gear box, the heat in the gear box is taken away, the temperature is reduced, and the oil-free screw dry compressor can run more safely and stably; the rotor shaft and the front bearing of the motor can be cooled to a certain extent through circulating cooling water, and heat in the gear box is isolated from being transferred to the motor side.
The surface of the motor shell is provided with a motor shell water channel, and cooling liquid flows through the motor shell water channel; the cooling layer comprises a cooling groove arranged on the side, facing the motor shell, of the front cover of the motor, and the cooling groove is communicated with a water channel of the motor shell.
The motor comprises a motor shell, a motor rotor is arranged in the motor shell, a fan device is arranged at the tail end of a rotating shaft of the motor rotor, and the rotating shaft of the fan device is overlapped with the rotating shaft of the motor rotor. The fan device is arranged at the tail end of the rotating shaft of the motor, circulating air flows in the motor, and the circulating air is cooled by cooling water of the motor shell, so that the temperature in the motor is reduced, and the temperature of the rotating shaft of the motor is reduced.
The motor shell water channel is annularly distributed on the surface of the motor shell.
The cooling tank is spirally or reversely distributed on the end face of the front cover of the motor, the cooling tank is provided with a water inlet and a water outlet, and the water channel of the motor shell is provided with a butt joint which is connected with the water inlet.
In the present invention, the above-mentioned preferred conditions can be arbitrarily combined on the basis of common knowledge in the field, so as to obtain each preferred embodiment of the present invention.
The positive progress effects of the invention are as follows: the oil-free screw compressor provided by the invention has the advantages that the cooling layer is arranged between the gear box and the motor side, so that the heat of the gear box is prevented from being transferred to the motor side, the heat insulation effect is realized, and the service life of the compressor is prolonged.
Drawings
Fig. 1 is a sectional view of an oil-free screw compressor according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the motor end cover in fig. 1.
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, the oil-free screw compressor in the present embodiment includes a compressor side constituted by a compressor housing 1 and a compressor front cover 6, in which a male rotor 2 and a gear case 3 are provided, and a pinion gear 5 is provided in an internal chamber 4 of the gear case. The side of the compressor is a motor side which comprises a motor front cover 7 and a motor shell 9. Inside the gear housing internal cavity 4 there are a coupling 12, a main gear 13, bearings 14 and a rotor 15. A motor rotor 10 is provided in the motor side.
A motor shell water channel 8 is arranged on the surface of the motor shell 9, and cooling water flows through the motor shell water channel 8. A cooling layer is arranged between the gear box and the motor side, the cooling layer comprises a cooling groove 71 which is arranged on the side of the motor front cover 7 facing the motor shell, the cooling groove 71 is spirally or reversely distributed on the end surface of the motor front cover and is provided with a water inlet 72 and a water outlet 73 so as to be communicated with the motor shell water channel. A cooling tank is added at the joint of the motor and the gear box, so that circulating cooling liquid for cooling the motor passes through the joint of the motor and the gear box, the heat in the gear box is taken away, the temperature is reduced, and the oil-free screw dry compressor can run more safely and stably; the rotor shaft and the front bearing of the motor can be cooled to a certain extent through circulating cooling water, and heat in the gear box is isolated from being transferred to the motor side.
In addition, the centrifugal fan 11 is arranged at the tail end of the rotating shaft of the motor, the rotating shaft drives the centrifugal fan to rotate when rotating, cooling air flow is guided to the motor spindle and the motor rotor by the centrifugal fan, heat of the motor spindle and the motor rotor is taken away, heat load of the motor spindle and the motor rotor is reduced, and particularly during high load, efficiency and operation stability of the motor can be greatly improved.
The above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims (5)

1. The utility model provides an oil-free screw compressor, its compressor side and motor side including being connected, the compressor side is including the compressor housing that connects gradually, the gear box, the compressor protecgulum, the motor side is including the motor protecgulum and the motor housing that connect gradually, its characterized in that, the gear box with be equipped with the cooling layer between the motor side.
2. An oil-free screw compressor as claimed in claim 1, wherein a motor housing water channel is provided on a surface of the motor housing, and a cooling liquid circulates in the motor housing water channel; the cooling layer comprises a cooling groove arranged on the side, facing the motor shell, of the front cover of the motor, and the cooling groove is communicated with a water channel of the motor shell.
3. An oil-free screw compressor as claimed in claim 2, wherein a motor rotor is provided in the motor housing, and a fan unit is provided at an end of a rotation shaft of the motor rotor, the rotation shaft of the fan unit coinciding with the rotation shaft of the motor rotor.
4. An oil-free screw compressor as claimed in claim 3, wherein the motor housing water channel is annularly arranged on the surface of the motor housing.
5. An oil-free screw compressor as claimed in claim 4, wherein the cooling channel is spirally or zigzag distributed on the end surface of the front cover of the motor, the cooling channel has a water inlet and a water outlet, and the water channel of the motor housing has a butt joint connected to the water inlet.
CN202011195422.0A 2020-10-30 2020-10-30 Oil-free screw compressor Pending CN114448166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011195422.0A CN114448166A (en) 2020-10-30 2020-10-30 Oil-free screw compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011195422.0A CN114448166A (en) 2020-10-30 2020-10-30 Oil-free screw compressor

Publications (1)

Publication Number Publication Date
CN114448166A true CN114448166A (en) 2022-05-06

Family

ID=81356705

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011195422.0A Pending CN114448166A (en) 2020-10-30 2020-10-30 Oil-free screw compressor

Country Status (1)

Country Link
CN (1) CN114448166A (en)

Similar Documents

Publication Publication Date Title
US10197058B2 (en) Screw compressor
CN103047134A (en) Non-oil-immersed air gap type hydraulic motor vane pump
CN110360109B (en) Driving structure of double-motor pressure pump
CN209990681U (en) Pitot tube pump bearing lubricating system
CN213484682U (en) Oil-free screw compressor
CN115370595A (en) Bilateral self-suction cooling double-impeller air-floatation high-speed direct-drive centrifugal blower and working method
CN202280628U (en) Magnetic pump
CN208534775U (en) Outer rotor double entry pump
JP6511321B2 (en) Refueling displacement compressor
CN114448166A (en) Oil-free screw compressor
CN202483899U (en) Dry-wet dual-purpose pump set
CN206555186U (en) A kind of bearing runner cooling structure in magnetic suspension cold medium compressor
CN210343737U (en) Water-cooled motor for water pump
CN2600627Y (en) Magnetic driven pump without shaft seal
KR102036201B1 (en) Turbo Compressor
CN212130894U (en) Double water cooling structure of water pump
CN210371202U (en) Water flow internal circulation water pump
CN203809636U (en) Open type symmetrically-supported high-speed fluid coupling
CN205478362U (en) Energy -efficient magnetic drive pump
CN208380890U (en) A kind of multiaction motor cooling and lubricating system for the distribution of commodities of centrifugal pump
KR20190122608A (en) Turbo Compressor
CN219068012U (en) Air suspension centrifugal blower and negative pressure air cooling high-speed permanent magnet motor
CN2415186Y (en) Unit construction centrifugal water pump
CN109185137A (en) A kind of rotor cooling structure of permanent magnetism one oil free screw air compressor machine
CN210484058U (en) Small-sized double-motor pressure pump driving structure

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination