CN1045633A

CN1045633A - Sealed air-compressor with spacer layer

Info

Publication number: CN1045633A
Application number: CN 89105681
Authority: CN
Inventors: 陈启星; 罗丁; 罗启宇; 葛良凯
Original assignee: 陈启星
Priority date: 1989-03-16
Filing date: 1989-03-16
Publication date: 1990-09-26
Also published as: CN1017822B; JPH0347487A

Abstract

The present invention adopts a kind of hermetically sealed can with separation layer, and the stator and rotor of motor are separated, and stator is every outside hermetically sealed can, and rotor seal is in jar.It is that mechanical motion all is sealed in a jar interior fully closed compressor, has overcome the weakness of traditional fully closed compressor again, as has changed, keeps in repair stator coil difficulty or the like.

Description

Sealed air-compressor with spacer layer

The present invention belongs to the invention in electrical equipment industry field hereinafter to be referred as isolating compressor, and its structure characteristic is that stator coil places outside the hermetically sealed can, a kind of hermetically sealed can that has the stator and rotor separation layer.

Conventional hermetic compressor be with whole electronic device in hermetically sealed can, motor is by base and three springs location.This structure has following shortcoming: it is very difficult that (1) coil burns out the back maintenance, the opening encapsulation jar just can carry out; (2) the motor heat dispersion is poor, and the heat that is dispersed in the jar will consume extra merit; (3) very high to the requirement of coil, require anti-refrigerant, refrigeration oil, prevent the refrigerant conduction, also very exquisite with insulating material; (4) motor is fixed by spring, and running precision is not high.

Isolated compressor adopts new-type structure, rotor is placed in the hermetically sealed can, and stator coil places outside the hermetically sealed can.The part of the separation stator and rotor of sealed shell of tank is called separation layer, is built up by the long strip silicon steel plate, so do not increase iron loss.The stator and rotor separation layer is the bottom of hermetically sealed can, also is the inwall of stator simultaneously.Adopt the way of separation layer that following advantage is arranged: (1) need not the opening encapsulation jar can change, keep in repair staor winding; (2) improve the stator heat dispersion, improve working life, reduce power consumption; (3) need not to consider problems such as problems such as the anti-refrigeration oil of stator coil, refrigerant and refrigerant specific conductance; (4) rotor-bent axle can accurately be located by upper and lower support, improves running precision; (5) other type motor also can adopt the separation layer method, improves the sealing of stator thermal diffusivity and rotor.

Key component of the present invention is a separation layer, it is characterized in that building up (seeing accompanying drawing 2) by the bar shaped silicon steel plate, and 1 magnetic conductor that builds up for the bar shaped silicon steel plate has high permeability and low iron loss; 2 is the magnetic gap part, is made by high magnetic resistance, big resistance, high-strength material, is used for reducing the interelectrode magnetic leakage loss, and improves compressive strength; The tight collar of 3 insulation; 4 insulated end covers, these two members can be made with spraying high-strength insulating material on the steel and iron parts, and also available other high-strength insulating material is made.The also available ring-shaped silicon steel sheet of separation layer builds up (seeing accompanying drawing 3), also available ferrite sintered forming.Separation layer adopts the material and the structure of high magnetic conduction, low iron loss in a word.After adopting separation layer, the efficient of motor can not reduce, and stator coil has installed to outside the sealing layer, has solved the disadvantage of traditional fully closed compressor.

Overall structure of the present invention as shown in Figure 1,1 separation layer; The 2 insulation collars; 3 insulated end covers; 4 inside support rings; 5 sealed shell of tank; 6 motor stators; 7 rotors; 8 bent axles, it and rotor shaft are fastenedly connected; 9 slide blocks; 10 cylinders; 11 upper frames; 12 lower supports; 13 seal rings; 14 shock-absorbing pipes.

One of embodiment, structure as shown in Figure 1 and Figure 2, the insulation collar be connected with separation layer with the screw thread of sealed shell of tank with little tapering, tapering plays a part to press.Insulated end cover is little taper thread and screws outward in jar, and under big air pressure, gasket ring is pressed very tightly, at this moment screws end cap once again.Stator iron core and separation layer electrical insulation are in order to avoid produce big eddy current.Rotor shaft-the bent axle of use, the lower support mode being located makes cylinder and piston that very high running precision be arranged.

Claims

1, the feature of sealed air-compressor with spacer layer is sealed jar of the stator coil of motor every outside, and stator is contained in the inside.The part that sealed shell of tank is isolated stator and rotor is called separation layer, is made up of the material and the structure of soft magnet case, low iron loss.Separation layer is the part of hermetically sealed can, also is the inwall of stator iron core.Rotor-bent axle is located by upper and lower support, improves running precision thus.

2, by claim (1), the best structure of separation layer is to be built up by the long strip silicon steel plate, and as shown in Figure 2,1 magnetic conductor that builds up for the bar shaped silicon steel plate has high permeability and low iron loss; 2 is the magnetic gap part, is made by high magnetic resistance, big resistance, high-intensity material, is used for reducing interelectrode magnetic leakage, loss, and improves separation layer compressive strength; The tight collar of 3 insulation; 4 insulated end covers; These two members are made with the material and the technology of high strength, insulation.The insulate tight collar and separation layer is conelet degree screw-thread fit, progressively compresses separation layer during precession.Insulated end cover also is screw-thread fit with separation layer, screws outward in hermetically sealed can, under the strong gas pressure acting in conjunction, compresses seal ring.Be coated with sealer between screw thread.The separation layer appearance is coated with insulated paint.

3, by claim (1), separation layer can build up with ring-shaped silicon steel sheet.

4, by claim (1), separation layer can form with ferrite sintered.

5, by claim (1), rotor-bent axle is located by upper and lower support, locatees without spring.

6, by claim (1), the separation layer method also can be used for other type motor, is used for improving the sealing of stator thermal diffusivity and rotor.