CN203130506U

CN203130506U - Compressor

Info

Publication number: CN203130506U
Application number: CN 201320095383
Authority: CN
Inventors: 张庆
Original assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Current assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Priority date: 2013-03-01
Filing date: 2013-03-01
Publication date: 2013-08-14
Anticipated expiration: 2023-03-01

Abstract

The utility model discloses a compressor. The compressor comprises a shell, a motor and a compressing mechanism, wherein the motor comprises a stator and a rotor; the compressing mechanism comprises a crankshaft; and the rotor and the crankshaft are connected and rotate synchronously. The compressor is characterized in that clamping and limiting mechanisms which are used in a matching manner and can limit the degree of freedom of the rotor in the peripheral direction are arranged on an inner hole of the rotor and the outer diameter surface of the crankshaft; and the upper end of the rotor is fixed together with the upper end of the crankshaft by a bolting component which can limit the degree of freedom of the rotor in the vertical direction. The compressor has the beneficial effects that the rotor and the crankshaft are not connected through interference fit, thus solving the problem in the traditional process that compressor performance reduction is finally caused by rotor deformation due to interference connection of the rotor; and in the compressor production process, in case that the rotor has poor clearance and needs repairing, the rotor and the crankshaft are easy to dismantle, thus improving the compressor productivity.

Description

Compressor

Technical field

The utility model relates to compressor field, particularly the Placement of compressor electric motor and compressing mechanism.

Background technique

Existing rotor-type compressor generally as shown in Figure 1, formed by compressor case 1, compressing mechanism (pump housing) 2, stator 3, rotor 4 ' (shown in Fig. 3 A, 3B) and liquid-storage container 5, its middle pump body comprises bent axle 6 ' parts such as (shown in Fig. 2 A, 2B), and bent axle 6 ' is connected with the rotor 4 ' of motor component by interference fit.Behind the compressor start, rotor 4 ' drives bent axle 6 ' and rotates, and the bent axle 6 ' with eccentric part constantly compression enters cold media air in the pump housing 2, compressed gas by exhaust port via coolant path and emission by exhaust pipe in refrigeration system

In the compressor of above conventional construction, rotor 4 ' is to be connected such Placement manufacturing process facility by the mode of interference with bent axle 6 ' in the compressing mechanism 2.But, also just because of the mode that adopts this interference fit, being about to rotor 4 ' heating earlier makes its internal diameter be slightly larger than bent axle 6 ' external diameter, assembling then, after treating rotor 4 ' cooling, rotor 4 ' internal diameter shrinks and less than bent axle 6 ' external diameter, thereby tightly pushes bent axle 6 ', so the rotor 4 ' in the electric machine assembly is under pressure mutually with bent axle 6 ', cause rotor 4 ' distortion easily.And, run through by bent axle 6 ' because the internal diameter of rotor 4 ' is whole, so lifting surface area is big, amount of deformation also just strengthens thereupon.Rotor 4 ' after the distortion makes the deterioration that becomes that is affected of the performance of compressor.In addition, when situations such as, rotor bad such as the stator and rotor gap when occurring and bent axle fitted position mistake need be dismantled, because what bent axle 6 ' and rotor 4 ' adopted is the mode of interference fit, therefore powerful dismounting is easy to cause bent axle 6 ' fracture and rotor 4 ' to be out of shape, thus the rising of the cost of production that brings when also having increased later period maintenance.

Summary of the invention

For overcoming shortcoming of the prior art, the purpose of this utility model provides a kind of compressor, and the means of fixation of its rotor and bent axle can not cause rotor deformation, is convenient to dismounting simultaneously again.

The purpose of this utility model is achieved in that a kind of compressor, comprise housing, motor, compressing mechanism, wherein motor comprises stator and rotor, compressing mechanism comprises bent axle, rotor is connected both with bent axle and rotates synchronously, it is characterized in that: described rotor inner hole and bent axle external diameter surface be provided with matching used can be at the clamping position-limit mechanism of circumferencial direction restrict rotor degrees of freedom; The upper end portion of described rotor is by fixing in bolting element and the rotating shaft upper end portion of vertical direction restrict rotor degrees of freedom.

Described clamping position-limit mechanism is recess and the protuberance that cooperatively interacts.

Described bent axle is provided with recess, and the position of rotor correspondence is provided with protuberance.

Described bent axle upper end portion is provided with tapped hole, fixedlys connected with the tapped hole of bent axle by bolt in the upper end portion of rotor.

Described bent axle surface offers the oilhole that is connected with the bent axle internal diameter.

Described oilhole is arranged on the position of not fitted by the endoporus of the endoporus of rotor or upper bearing (metal) in the bent axle surface.

The Placement of rotor of the present utility model and bent axle is not interference fit, solved that tratitional technology produces because the rotor interference connects the problem that causes rotor deformation finally to cause compressor performance to descend, and in the compressor production process, if when taking place such as the bad eligible for repair situation in rotor gap, rotor and bent axle are easy to dismounting again, have improved the producibility of compressor.

Description of drawings

Fig. 1 is the compressor assembling schematic representation of prior art;

Fig. 2 A, Fig. 2 B are respectively plan view and the side views of the bent axle of prior art;

Fig. 3 A, Fig. 3 B are plan view and the side views of the rotor of prior art;

Fig. 4, be compressor of the present utility model assembling schematic representation;

Fig. 5 A, Fig. 5 B are plan view and the side views of bent axle of the present utility model;

Fig. 6 A, Fig. 6 B are plan view and the side views of rotor of the present utility model;

Wherein: housing 1, compressing mechanism 2, stator 3, rotor 4 ', rotor 4, protuberance 41, endoporus 42, liquid-storage container 5, bent axle 6 ', bent axle 6, recess 61, tapped hole 62, oily path 63, oilhole 64, upper bearing (metal) 8, bolting element 9.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, but the utility model is not limited to this specific examples.

As shown in Figure 4, a kind of compressor of the present utility model comprises housing 1, motor, compressing mechanism 2, and wherein motor comprises stator 3 and rotor 4, and compressing mechanism 2 comprises bent axle 6, and rotor 4 is connected both with bent axle 6 and rotates synchronously.Rotor inner hole 42 and bent axle 6 external diameter surfaces be provided with matching used can be at the clamping position-limit mechanism of circumferencial direction restrict rotor degrees of freedom.Preferably, the clamping position-limit mechanism is recess and the protuberance that cooperatively interacts, and makes rotor 4 just can be installed on the bent axle 6, and recess and protuberance clamping can drive bent axle 6 by rotor 4 and rotate, thereby drive compressing mechanism work.Rotor 4 internal diameters of the present utility model are slightly larger than bent axle 6 external diameters, to realize the Spielpassung of rotor and bent axle, eliminate because the internal rotor stress that heat transfer jacket technology interference fit causes reduces iron loss.For example in the present embodiment, be provided with recess 61 at bent axle 6, be provided with the protuberance 41 of shape size coupling in the position of rotor 4 correspondences.Recess 61 is arranged on the axial direction of bent axle 6, can be positioned at any one side of circumferencial direction.Cooperation between bent axle recess 61 and the rotor protuberance 41 can be the cooperation of regular shape, also can be erose cooperation.The clamping position-limit mechanism also can be protuberance to be set and at rotor recess to be set at bent axle, can play the effect in circumferencial direction restrict rotor degrees of freedom equally.

The upper end portion of rotor 4 is by fixing with bent axle 6 upper end portions at the bolting element 9 of vertical direction restrict rotor 4DOF.For example in the present embodiment, be provided with tapped hole 62 in bent axle 6 upper end portions, the upper end portion of rotor 4 is by adopting bolt in the bolting element 9(present embodiment) screw with the tapped hole 62 of bent axle 6, make nut push down rotor inner hole 42 upper-end surfaces, thereby produce a downward confining force at vertical direction and compress rotor 4, rotor 4 can't be moved with respect to bent axle 6 by in the vertical direction.Because after rotor 4 was assembled on the bent axle 6, bent axle 6 upper end portions were lower than the upper end portion of rotor inner hole 42, the bolt that therefore is easy to pack in the upper end portion of bent axle 6 is pushed down rotor inner hole 42 upper-end surfaces.

Preferably, offer the oilhole 64 that is connected with the oily path 63 of bent axle internal diameter on bent axle 6 surfaces, this oilhole is preferably disposed on described oilhole and is arranged on the position of not fitted by the endoporus of the endoporus 42 of rotor or upper bearing (metal) 8 in the bent axle surface, so that machine oil flows out, for example oilhole 64 is offered the position that bent axle 6 middle part surfaces are not fitted by rotor inner hole 42 in the present embodiment, at the path that just can rebulid the oil circulation like this, can not stopped up by bent axle 6 top bolts.

Claims

1. compressor, comprise housing, motor, compressing mechanism, wherein motor comprises stator and rotor, compressing mechanism comprises bent axle, rotor is connected both with bent axle and rotates synchronously, it is characterized in that: described rotor inner hole and bent axle external diameter surface be provided with matching used can be at the clamping position-limit mechanism of circumferencial direction restrict rotor degrees of freedom; The upper end portion of described rotor is by fixing in bolting element and the rotating shaft upper end portion of vertical direction restrict rotor degrees of freedom.

2. compressor according to claim 1, it is characterized in that: described clamping position-limit mechanism is recess and the protuberance that cooperatively interacts.

3. compressor according to claim 2, it is characterized in that: described bent axle is provided with recess, and the position of rotor correspondence is provided with protuberance.

4. compressor according to claim 1, it is characterized in that: described bent axle upper end portion is provided with tapped hole, and fixedly connected with the tapped hole of bent axle by bolt in the upper end portion of rotor.

5. according to the described compressor of the arbitrary claim of claim 1-4, it is characterized in that: described bent axle surface offers the oilhole that is connected with the bent axle internal diameter.

6. compressor according to claim 5 is characterized in that: described oilhole is arranged on the position of not fitted by the endoporus of the endoporus of rotor or upper bearing (metal) in the bent axle surface.