CN102536732A

CN102536732A - Semi-closed piston refrigeration compressor for ammonia

Info

Publication number: CN102536732A
Application number: CN201210048674XA
Authority: CN
Inventors: 袁君
Original assignee: DALIAN EAST REFRIGERATION EQUIPMENT CO LTD
Current assignee: DALIAN EAST REFRIGERATION EQUIPMENT CO LTD
Priority date: 2012-02-29
Filing date: 2012-02-29
Publication date: 2012-07-04

Abstract

The invention discloses a semi-closed piston refrigeration compressor for ammonia. The semi-closed piston refrigeration compressor comprises a compressor body, a piston, a connecting rod, a crank shaft, a cylinder sleeve, a driver and a motor, wherein the cylinder sleeve is fixed in the compressor body; the piston is arranged in the cylinder sleeve and connected with the crank shaft through the connecting rod; the sensor comprises an inner rotor, an isolation sleeve, an outer rotor, an inner magnet and an outer magnet; the inner rotor of the driver is connected with the crank shaft; the outer rotor of the driver is connected with a rotor of the motor; the isolation sleeve is arranged between the inner rotor and the outer rotor; the outer magnet is arranged at the inner circumferential part of the outer rotor; and the inner magnet is arranged at the outer circumferential part of the inner rotor. The semi-closed piston refrigeration compressor for ammonia has the beneficial effects that magnetic transmission moment transfer is realized on the basis of the overtorque effect characteristic of a magnetic force, dynamic sealing for main shaft transferred torque is converted to static sealing, so that zero leakage transfer of power is realized, and high-frequency vibration transfer can be avoided; and furthermore, balance running of a working machine is realized, and overload protection during running of the working machine can be realized.

Description

Ammonia is with semiclosed piston refrigeration compressor

Technical field

The present invention relates to a kind of ammonia with semiclosed piston refrigeration compressor.

Background technique

In the existing technology, compressor roughly can be divided into displacement type compressor, velocity profile compressor and opened compressor, in displacement type compressor; The gas of certain volume is inhaled the people in cylinder earlier, and its volume is forced and dwindles in cylinder then, and pressure raises; Gas is discharged from cylinder with just being forced when reaching certain pressure; It is thus clear that the suction and discharge process of displacement type compressor is intermittently to carry out, it flows not is continous-stable; In the velocity profile compressor; The growth of gas pressure is that the speed by gas is transformed, and it is at a high speed certain that gas is obtained, and then the kinetic energy of gas is converted into pressure can; It is thus clear that; Compression process in the velocity profile compressor can carry out continuously, and it flows is stable, and the velocity profile compressor of using in the refrigeration plant mainly is a centrifugal refigerating compressor; Opened compressor and prime mover are divided into two bodies, and two machine main shafts lean on transmission device to connect transmission, and the compressor main shaft overhanging end is provided with gland seal device; With anti-leak, if prime mover is a motor, because of it does not contact the requirement that need not to possess anti-refrigeration agent and oil resistant with refrigeration agent with lubricant oil; Therefore; It is in the refrigeration system of working medium that opened compressor can be used for ammonia, and the seal form of the compressor of above form is motive sealing, and this sealing usually leakage phenomenon can occur.

Summary of the invention

The purpose of this invention is to provide a kind of ammonia of realizing not having sealing, zero leakage with semiclosed piston refrigeration compressor.

The present invention for realizing the technological scheme that above-mentioned purpose adopted is: a kind of ammonia is with semiclosed piston refrigeration compressor; Comprise body (1), piston (2), connecting rod (3), bent axle (4), cylinder sleeve (5), driver (6) and motor (8); Cylinder sleeve (5) is fixed in the body (1); Piston (2) is installed in the cylinder sleeve (5); Piston (2) is connected with bent axle (4) through connecting rod (3), and sensor (6) comprises internal rotor (61), separation sleeve (62), external rotor (63), inner magnet (64) and outer magnet (65), and the internal rotor (61) of driver (6) is connected with bent axle (4); The external rotor (63) of driver (6) is connected with the rotor (82) of motor (8); Separation sleeve (62) is installed between internal rotor (61) and the external rotor (63), and outer magnet (65) is installed in the inner circumferential portion of external rotor (63), and inner magnet (64) is installed in the excircle part of internal rotor (61).

Said motor (8) comprises front end seat (81), rotor (82), stator (83), overcoat (84) and rear end seat (85); Said front end seat (81) and rear end seat (85) are installed in the two ends of motor shaft; Stator (83) is installed in the overcoat (84), and rotor (82) is installed between front end seat (81) and the rear end seat (85).

Be provided with outer cover (7) between said body (1) and the motor (8), said outer cover (7) covers on the driver (6).

Said separation sleeve (62) forms Seal cage with internal rotor (61) and bent axle (4) sealing.

A kind of ammonia of the present invention is with semiclosed piston refrigeration compressor, and the magnetic drives carry-over moment utilizes the ultra square action characteristic of magnetic force to realize; The motive sealing that can transform the main shaft transmitting torque is a static seal, realizes the zero leakage transmission of power, can avoid the dither transmission; Realize the balance movement of work mechanism, can realize the operating overload protection of work mechanism, compare with rigid coupling; Install, dismounting, debugging, maintenance be all more convenient, but environment purification, pollution abatement.

Description of drawings

Fig. 1 is the structural representation of a kind of ammonia of the present invention with semiclosed piston refrigeration compressor.

Fig. 2 is the structural representation of a kind of ammonia of the present invention with semiclosed piston refrigeration compressor driver.

Fig. 3 is the structural representation of a kind of ammonia of the present invention with semiclosed piston refrigeration compressor motor.

Among the figure: 1, body; 2, piston; 3, connecting rod; 4, bent axle; 5, cylinder sleeve; 6, driver; 7, outer cover; 8, motor; 61, internal rotor; 62, separation sleeve; 63, external rotor; 64, inner magnet; 65, outer magnet; 81, front end seat; 82, rotor; 83, stator; 84, overcoat; 85, rear end seat.

Embodiment

Like Fig. 1, Fig. 2 and shown in Figure 3, ammonia comprises body 1, piston 2, connecting rod 3, bent axle 4, cylinder sleeve 5, driver 6 and motor 8 with semiclosed piston refrigeration compressor, and cylinder sleeve 5 is fixed in the body 1; Piston 2 is installed in the cylinder sleeve 5, and piston 2 is connected with bent axle 4 through connecting rod 3, is provided with outer cover 7 between body 1 and the motor 8, and driver 6 is arranged in outer cover 7 covers; Sensor 6 comprises internal rotor 61, separation sleeve 62, external rotor 63, inner magnet 64 and outer magnet 65, and the internal rotor 61 of driver 6 is connected with bent axle 4, and the external rotor 63 of driver 6 is connected with the rotor 82 of motor 8, and separation sleeve 62 is installed between internal rotor 61 and the external rotor 63; Outer magnet 65 is installed in the inner circumferential portion of external rotor 63, and inner magnet 64 is installed in the excircle part of internal rotor 61, and motor 8 comprises front end seat 81, rotor 82, stator 83, overcoat 84 and rear end seat 85, and front end seat 81 and rear end seat 85 are installed in the two ends of motor shaft; Stator 83 is installed in the overcoat 84, and rotor 82 is installed between front end seat 81 and the

rear end seat

85, and 4 sealings form Seal cage to separation sleeve 62 with bent axle with internal rotor 61, and ammonia of the present invention adopts magnetic driver with semiclosed Spiral Lobe Refrigeration Compressor; The power of prime mover is passed to the interior magnet assembly on the working shaft through the outer magnet assembly on it, and interior magnet assembly and outer magnet assembly are separated by separation sleeve, working shaft need not stretch out the space that will seal, cancelled motive sealing; Thereby realize not have sealing, zero leakage, magnetic driver is selected rare earth permanent-magnetic material for use, utilize it high energy product, high-coercive force characteristic the magnet dense arrangement of opposed polarity together, the permanent magnet magnetic force driver; Form " combination push-and-pull magnetic circuit " structure by internal rotor and external rotor, rotary magnet is used motor driving outside vacuum chamber, and vacuum-chamber wall selects for use nonmagnetic body material (magnetism-free stainless steel, aluminum alloy, carbon fiber reinforce plastic etc.) to process separation sleeve; Change is sealed into static seal, therefore, has fundamentally eliminated the leakage that the rotatingshaft sealing part produces, magnetic drives; Be exactly the mode through magnetic field N S utmost point coupling interaction transferring power, magnetic driver comprises external rotor, internal rotor, separation sleeve and bearing arrangement, and wherein, separation sleeve and bearing arrangement are mainly used in the structure of magnetic drives sealing; Load onto magnet respectively in the excircle part of internal rotor and the inner circumferential portion of external rotor, magnet is the even number utmost point, according to NS interleaved mode circumferential arrangement, with the magnet working surface alignment of inner and outer rotors; Promptly coupling automatically has certain air gap between internal rotor and the external rotor, is used for isolating initiatively and driven member; Between internal rotor and external rotor, a separation sleeve is installed, can internal rotor or external rotor be closed; Moment of torsion still can transmit, the principle that Here it is utilizes magnetic drives to seal, and the magnetic drives structure is transformed into static seal with motive sealing; This also is the great advantage of magnetic drives, and separation sleeve is generally processed by metallic material from the consideration of intensity; Because separation sleeve is worked, therefore produce serious " generating " effect, i.e. eddy current loss in the high speed alternating magnetic field; The electric conductivity of material is good more, and sectional area is big more, and rotating speed is high more; Eddy current loss is just big more, and therefore, separation sleeve selects the specific resistance of nonferromagnetic than higher material as far as possible.

Claims

1. an ammonia is with semiclosed piston refrigeration compressor; It is characterized in that: comprise body (1), piston (2), connecting rod (3), bent axle (4), cylinder sleeve (5), driver (6) and motor (8); Cylinder sleeve (5) is fixed in the body (1); Piston (2) is installed in the cylinder sleeve (5); Piston (2) is connected with bent axle (4) through connecting rod (3), and sensor (6) comprises internal rotor (61), separation sleeve (62), external rotor (63), inner magnet (64) and outer magnet (65), and the internal rotor (61) of driver (6) is connected with bent axle (4); The external rotor (63) of driver (6) is connected with the rotor (82) of motor (8); Separation sleeve (62) is installed between internal rotor (61) and the external rotor (63), and outer magnet (65) is installed in the inner circumferential portion of external rotor (63), and inner magnet (64) is installed in the excircle part of internal rotor (61).

2. a kind of ammonia according to claim 1 is with semiclosed piston refrigeration compressor; It is characterized in that: said motor (8) comprises front end seat (81), rotor (82), stator (83), overcoat (84) and rear end seat (85); Said front end seat (81) and rear end seat (85) are installed in the two ends of motor shaft; Stator (83) is installed in the overcoat (84), and rotor (82) is installed between front end seat (81) and the rear end seat (85).

3. a kind of ammonia according to claim 1 is characterized in that with semiclosed piston refrigeration compressor: be provided with outer cover (7) between said body (1) and the motor (8), said outer cover (7) covers on the driver (6).

4. a kind of ammonia according to claim 1 is characterized in that with semiclosed piston refrigeration compressor: said separation sleeve (62) forms Seal cage with internal rotor (61) and bent axle (4) sealing.