CN2473361Y - Scroll compressor shaft assembly - Google Patents

Abstract

The utility model discloses a scroll compressor shaft assembly device is equipped with an eccentric portion on the eccentric shaft, the cover is equipped with a lantern ring on this eccentric portion, the inside perforation of taking the concentric circles setting that is equipped with of this lantern ring, this lantern ring is with the eccentric portion that the eccentric shaft was located to the perforated cover, this orbiting scroll lower extreme has a fixed orifices, be fixed with a bush in this fixed orifices, the inside perforation that is equipped with of this bush, this perforation inner wall is equipped with the spiral oil ditch that can be used for adding lubricating oil, the lantern ring outside is located to the perforated cover of this bush. The shaft assembling device can reduce noise, has high elasticity of an assembling process and is easy to control precision.

Description

Scroll compressor shaft assembly

The utility model relates to a shaft assembly device of a scroll compressor, in particular to a shaft assembly device capable of reducing noise, having greater flexibility in the assembly process and easy control of precision.

A scroll compressor is formed by meshing a fixed scroll and an orbiting scroll to form a plurality of enclosed spaces. The volume of the enclosed space is gradually reduced from the outer edge to the central part. The known working principle is as follows: As shown in Figures 1 and 2, the orbiting scroll 10 is orbiting relative to the fixed scroll 11 to promote the low-pressure working fluid a to enter the compression from the suction port b, and then the orbiting scroll 10 continues to orbit , pushing the working fluid a to be discharged at high pressure from the outlet c near the center of the fixed scroll 11 to complete the compression stroke of the working fluid.

As shown in Figure 3, the known scroll compressor mainly includes orbiting scroll 10, fixed scroll 11, spacer block 12, Oldham ring 13, skeleton 14, eccentric shaft 15, motor rotor 16 and motor stator 17 and other components, wherein the eccentric shaft 15 is closely matched with the motor rotor 16, and a radial compliance collar 18 is arranged on the upper end of the eccentric shaft 15. When the motor is powered on, the motor rotor 16 can drive the eccentric shaft 15 to rotate, and the sleeve on the upper end of the eccentric shaft 15 The ring 18 drives the orbiting scroll 10 to eccentrically rotate relative to the center of the motor rotor 16, and an Oldham ring 13 is arranged on the top of the skeleton 14. When the orbiting scroll 10 is driven by external force, the Ordan ring 13 can be used to control the orbiting scroll 10. It can perform revolution and orbit, but cannot perform self-rotation movement. The orbiting scroll 10 is pressed tightly on the frame 14 by the fixed scroll 11, and the fixed scroll 11 is fixed on the frame 14 by complying with the stopper 19, which is allowed by the compliance stopper 19. The fixed scroll 11 can move slightly in the axial direction. Both the orbiting scroll 10 and the fixed scroll 11 have a set of scroll-shaped scroll plates 20, 21, which can form a plurality of compression chambers between each other. The isolation block 12 is a fixed In the shell 22 of the scroll compressor, the inside of the shell 22 is divided into a high-pressure chamber and a low-pressure chamber by the isolation block 12, and a perforation 24 in the middle of the isolation block 12 leads to the two chambers. When the low-pressure working fluid is sucked into the compression chamber through the suction port b, through the continuous orbiting of the orbiting scroll 10, the pushing working fluid is expelled from the outlet C through the center of the fixed scroll 11, and then on the shell 22 of the compressor. The air outlet pipe 23 discharges the high-pressure working fluid out of the compressor. However, in the above-mentioned known scroll compressor, a radially compliant collar 18 needs to be sheathed on the eccentric shaft 15. Because of the radially compliant function, the gap is large, resulting in increased noise.

Another known scroll compressor does not have a radially compliant collar, but since the eccentric shaft (not shown) is integrally formed, there are many consumables, and it is manufactured by casting or forging, and the cost is relatively high. When the eccentric shaft needs to be assembled with the frame first, the assembly process is not very flexible.

The main purpose of the present utility model is to provide a scroll compressor shaft assembly device, which is provided with a ring on the eccentric portion of the upper end of the eccentric shaft of the scroll compressor. The perforation is arranged in a circle. The collar is set on the eccentric part of the eccentric shaft by the perforation. The lower end of the orbiting scroll has a fixed hole. The inner wall is provided with a spiral oil groove, which can be used to add lubricating oil. The perforation is sleeved outside the collar; the collar of the utility model is a concentric circle, which makes the precision easy to control, and the bush is provided with a spiral oil groove, which can be used for Add lubricating oil to solve the problem of lubrication between the bushing and the corresponding collar. The utility model cancels the function of radial compliance, and the gap between the collar and the eccentric shaft is reduced, which can reduce the noise. In addition, the eccentric shaft does not need to be Assembled with the skeleton, the assembly process is more flexible.

The purpose of this utility model is achieved in this way: a scroll compressor shaft assembly device is provided with an eccentric part on the upper end of the eccentric shaft, a set of rings is set on the eccentric part, and a set of concentric circles is arranged inside the ring. The perforation, the collar is set on the eccentric part of the eccentric shaft through the perforation, the lower end of the orbiting scroll has a fixing hole, a bushing is fixed in the fixing hole, a perforation is provided inside the bushing, and the inner wall of the perforation is provided with The spiral oil channel that can be used to add lubricating oil, the perforation of the bush is set on the outside of the collar.

The scroll compressor shaft assembly device according to the utility model has at least the following advantages:

1. The collar 32 of the present invention is a concentric circle, which makes the precision easy to control.

2. The bushing 35 of the present invention is provided with a spiral oil groove 37, which can be used to add lubricating oil to solve the problem of lubrication between the bushing 35 and the corresponding collar 32.

3. The utility model cancels the function of radial compliance, and the gap between the collar 32 and the eccentric shaft 15 is reduced, which can reduce the noise.

4. When the utility model is assembled, the eccentric shaft 15 does not need to be assembled with the skeleton 14 first, and the assembly process is relatively flexible.

In order to enable your examiner to further understand the features and technical content of the utility model, please refer to the following detailed description and drawings of the utility model, but the attached drawings are only for reference and illustration, and are not used to explain the utility model be restricted. The accompanying drawings about this embodiment are:

FIG. 1 is a schematic diagram of the operating principle of a known scroll compressor.

Fig. 2 is a schematic diagram of the operating principle of a known scroll compressor.

Fig. 3 is a schematic plan view of a known scroll compressor.

Fig. 4 is a three-dimensional exploded view of the utility model.

Fig. 5 is a plane combined view of the utility model.

Fig. 6 is a schematic plan view of the utility model assembled in a scroll compressor.

As shown in Figures 4, 5 and 6, the utility model provides a scroll compressor shaft assembly device, the scroll compressor mainly includes an orbiting scroll 10, a fixed scroll 11, an isolation block 12, Odan ring 13, skeleton 14, eccentric shaft 15, motor rotor 16 and motor stator 17 and other components, among which the eccentric shaft 15 and the motor rotor 16 are closely matched, and the top of the eccentric shaft 15 is properly connected with the orbiting scroll 10. When the motor is powered on, The motor rotor 16 can drive the eccentric shaft 15 to rotate, and the top of the eccentric shaft 15 drives the orbiting scroll 10 to perform eccentric rotation relative to the center of the motor rotor 16. An Oldham ring 13 is arranged on the top of the skeleton 14. When the orbiting scroll 10 is driven by external force, The Ordan ring 13 can be used to control the orbiting scroll 10 to only perform revolution and orbit, but not to perform self-rotation movement. The orbiting scroll 10 is pressed tightly on the frame 14 by the fixed scroll 11, and the fixed scroll 11 follows the barrier 19 is fixed on the frame 14, and the fixed scroll 11 can move slightly in the axial direction by complying with the baffle 19. Both the orbiting scroll 10 and the fixed scroll 11 have a set of spiral scroll pieces 20, 21, which are mutually A plurality of compression chambers can be formed between them. The isolation block 12 is fixed in the shell 22 of the scroll compressor, and the interior of the shell 22 is divided into a high-pressure chamber and a low-pressure chamber by the isolation block 12. There is a perforation in the middle of the isolation block 12. 24 leads to the second chamber. When the low-pressure working fluid is sucked into the compression chamber through the suction port b, after the continuous orbiting of the orbiting scroll 10, the pushing working fluid is expelled from the outlet c through the center of the fixed scroll 11, and then is discharged on the shell 22 of the compressor. The air outlet pipe 23 discharges the high-pressure working fluid out of the compressor.

The utility model mainly arranges a shaft assembly mechanism 30 between the orbiting scroll 10 and the eccentric shaft 15 of the scroll compressor, and an eccentric part 31 is arranged on the upper end of the eccentric shaft 15, and the eccentric part 31 is loosely fitted. A collar 32 is sleeved in a way, the collar 32 is a circular ring body, and a perforation 33 is arranged axially through and arranged concentrically in the interior, and the collar 32 is sleeved on the perforation 33 in a loose fit The eccentric portion 31 of the eccentric shaft 15 has a fixing hole 34 at the lower end of the orbiting scroll 10, and a bushing 35 is fixed in the fixing hole 34 in a tightly fitting manner. The bushing 35 is a hollow sleeve, and the inside of the bushing 35 There is an axially penetrating through hole 36, and the inner wall of the through hole 36 is provided with a spiral oil groove 37, which can be used to add lubricating oil. The through hole 36 is sleeved on the outside of the collar 32 in a loose fit, thereby forming a scroll compression The shaft assembly mechanism 30 of the machine. In addition, the collar 32 of the present utility model can be made of steel or composite material. If the collar 32 is made of composite material, it can be used to replace the bush 35, and the setting of the bush 35 can be omitted, and the collar 35 can be It can be directly fixed in the fixing hole 34 of the orbiting scroll 10 (not shown).

Claims (1)

1, a kind of scroll compressor axle assembling device, it is characterized in that: be provided with an eccentric part in the eccentric shaft upper end, be arranged with a collar on this eccentric part, this collar inside is provided with a perforation of taking concentric circle to be provided with, this collar is the eccentric part that is sheathed on eccentric shaft with perforation, there is a fixed hole this moving scrollwork lower end, be fixed with a lining in this fixed hole, this bush inside is provided with a perforation, this perforation inwall is provided with can be in order to add the spiral oil duct of lubricant oil, and the perforation of this lining is sheathed on collar outside.

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