CN101684785A

CN101684785A - Compressor

Info

Publication number: CN101684785A
Application number: CN200810161041A
Authority: CN
Inventors: 赖建宏; 王宗吉; 洪联馨; 陈志聪; 吴盛忠; 陈国荣
Original assignee: Teco Electric and Machinery Co Ltd
Current assignee: Teco Electric and Machinery Co Ltd
Priority date: 2008-09-24
Filing date: 2008-09-24
Publication date: 2010-03-31

Abstract

The invention relates to a compressor which comprises a shell, a refrigerant compressing device, an outer rotor type motor and a fixing element, wherein the refrigerant compressing device is containedin the shell; the outer rotor type motor comprises a crankshaft, an outer rotor, an inner stator and at least one bearing; the crankshaft is connected with the refrigerant compressing device; the outer rotor is fixed to the crankshaft; the inner stator is positioned in the outer rotor; at least one bearing is arranged between the inner stator and the crankshaft; and the fixing element is used forfixing the inner stator to the shell. Accordingly, the compressor can provide larger torsion in compact volume.

Description

Compressor

Technical field

The present invention relates to a kind of compressor, especially a kind of compressor with external-rotor motor.

Background technique

In general, compressor uses by motor that rotor and stator constituted to drive, and is that stator, inboard are formed by the structure of rotor with the outside more than the motor of market now.In prior art, use the compressor of the single-phase constant speed motor of internal rotor type, its efficient is relatively poor, and the motor volume is bigger.Use the compressor of inner-rotor-type brushless d.c. motor,, still can't solve the bigger problem of motor volume though it can improve moyor.

Recently also have a kind of outer rotor-type motor, the rotor of motor is placed the outside, stator places the inboard, though its volume of motor significantly can be dwindled, but its torsion that can produce is less, only can be applicable to the device as low torsion demands such as telecontrolled aircrafts.

Therefore, be necessary to provide a kind of compressor, it has outer rotor-type motor, to improve the existing in prior technology problem.

Summary of the invention

The object of the present invention is to provide a kind of compressor, it uses the drive unit of outer rotor-type motor as the freezing mixture compression.

For reaching above-mentioned purpose, the compressor that is used for air-conditioning system of the present invention comprises housing, freezing mixture compression set, outer rotor-type motor and fixed block.Wherein, the freezing mixture compression set is placed in the housing.Outer rotor-type motor comprises bent axle, external rotor, inner stator and at least one bearing.Bent axle connects the freezing mixture compression set; External rotor is fixed in bent axle; Inner stator is positioned at external rotor; And at least one bearing is located between inner stator and the bent axle.Fixed block is in order to be fixed in housing with inner stator.

Therefore, compressor of the present invention can provide bigger torsion in volume compact.

Description of drawings

Fig. 1 is a compressor embodiment's of the present invention schematic representation.

Fig. 2 is another embodiment's of a compressor of the present invention schematic representation.

Wherein, description of reference numerals is as follows:

Compressor 1,1a freezing mixture compression set 10

Outer rotor-

type motor

2,2a bent axle 20

Disk body 22 hot hole 24 that scatters

External rotor 30 second radiation holes 32

Inner stator

40,40a

first radiation hole

42,42a

Fixed

block

50,50a the 3rd radiation hole 52

Bearing 60 equilibrium blocks 70

Housing 90

Embodiment

For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by going out specific embodiments of the invention, and conjunction with figs. is described in detail as follows.

Please refer to Fig. 1, it is a compressor embodiment's of the present invention schematic representation.Compressor 1 can be used for air-conditioning system (for example air conditioner, refrigerator etc.), and compressor 1 can be vertical or horizontal.Compressor 1 mainly comprises housing 90, freezing mixture compression set 10 and outer rotor-type motor 2.

Wherein, housing 90 is used for ccontaining freezing mixture compression set 10 and outer rotor-type motor 2, and freezing mixture compression set 10 and outer rotor-type motor 2 be fixed in housing 90, makes compressor 1 reduce vibrations and noise when running.Wherein, housing 90 can be High Pressure Shell or low pressure housing.

Freezing mixture compression set 10 is placed in the housing 90.Freezing mixture compression set 10 is the freezing mixture compression set of general common type, and for instance, it can be reciprocating type, rotary type, scroll-type etc.Because freezing mixture compression set 10 belongs to known technology, therefore repeat no more its thin bilge construction.About the means of fixation of freezing mixture compression set 10, in present embodiment, between the periphery and housing 90 with freezing mixture compression set 10, fix with welding manner (as the carbon dioxide welding).

Outer rotor-type motor 2 mainly comprises bent axle 20, external rotor 30 and inner stator 40, and for instance, outer rotor-type motor 2 can be Brushless DC motor, and it has dynamical characteristic.In present embodiment, outer rotor-type motor 2 is positioned at the top of freezing mixture compression set 10, but outer rotor-type motor 2 also can be positioned at the below of freezing mixture compression set 10.Use the advantage of outer rotor-type motor 2 to be, under identical torsion output, can reduce the volume of half approximately, thereby can save material and reduce cost.

Bent axle 20 connects freezing mixture compression set 10.Furthermore, freezing mixture compression set 10 has axle center hole, and the internal diameter of axle center hole matches with the external diameter of bent axle 20, makes bent axle 20 just can insert axle center hole.Therefore, by the power that outer rotor-type motor 2 is produced, just can be via bent axle 20 output rear driving freezing mixture compression sets 10.

Bent axle 20 also comprises disk body 22, and the shape of disk body 22 is identical substantially with the outside of external rotor 30.Disk body 22 is fixed in the outside of external rotor 30 with fastening piece (for example screw, bolt or rivet etc.), to link bent axle 20 and external rotor 30, makes bent axle 20 and external rotor 30 to rotate synchronously by disk body 22.

Because in the present embodiment, freezing mixture compression set 10 is a single-cylinder, it can produce the unbalanced phenomenon of operation.In order to solve this problem, use equilibrium block 70, equilibrium block 70 is near the peripheral position of disk body 22, and disk body 22 is fixed between equilibrium block 70 and the external rotor 30.When outer rotor-type motor 2 runnings, equilibrium block 70 can produce balanced action.But it is noted that,, then can not need to use equilibrium block 70 if freezing mixture compression set 10 is twin cylinder or scroll-type cylinder.

Inner stator 40 major parts are positioned at external rotor 30, and bearing 60 are set between inner stator 40 and bent axle 20, to avoid inner stator 40 and bent axle 20 direct friction.The length of the visual bent axle 20 of the quantity of bearing 60 and be configured to one or more.When the length of inner stator 40 hour, a bearing 60 can only be set, it is positioned at central authorities' (as shown in Figure 1) of inner stator 40; When the length of inner stator 40 is longer, a plurality of bearings 60 can be set, to lower the shaking degree of bent axle 20 and motor 2.

One side of inner stator 40 is not to be coated in the external rotor 30, but exposes to the outer rim of external rotor 30.For firm inner stator 40, use fixed block 50 so that inner stator 40 is fixed in housing 90.In present embodiment, the cross section of fixed block 50 is reverse U shape, and its profile is in the form of annular discs substantially, and fixed block 50 can lock inner stator 40 mutually by lock firmware, and in addition, the outer rim of fixed block 50 welding (for example relief welding) is in housing 90.Select used material about the visual demand of the material of fixed block 50, for instance, it can be sheet metal part, if the strength deficiency of sheet metal part is used cast iron instead with the Shi Zeke that satisfies the demands.

Because during compressor 1 operation, the inner stator 40 of outer rotor-type motor 2 is the condition of high temperature.In order to help heat radiation, the inside of outer rotor-type motor 2 has the heat radiation runner, connects inner stator 40 and external rotor 30, so that freezing mixture dispels the heat to inner stator 40 by the heat radiation runner.The heat radiation runner can be made of jointly a plurality of radiation hole.

In present embodiment, a side of inner stator 40 comprises at least one first radiation hole 42, and a side of external rotor 30 comprises at least one second radiation hole 32, and fixed block 50 comprises at least one the 3rd radiation hole 52, and disk body 22 comprises at least one hot hole 24 that scatters.Wherein, the position of the 3rd radiation hole 52 cooperates the position of first radiation hole 42, and the position of second radiation hole 32 cooperates the position that scatters hot hole 24.

By the scatter gap of hot hole 24 and inner stator 40 of first radiation hole 42, second radiation hole 32, the 3rd radiation hole 52, the, the common heat dissipation channel that can be used for coolant flow that forms.Scatter hot hole 24 and second radiation hole 32 so that the freezing mixture guiding is entered inner stator 40 inside by the, again by first radiation hole 42 and the 3rd radiation hole 52 to be used for the freezing mixture outflow.

Then please refer to Fig. 2, it is another embodiment's of a compressor of the present invention schematic representation.Be in the maximum difference of the foregoing description, this fixed block 50a is only local to contact locking with inner stator 40a, inner stator 40a runs through fixed block 50a, so fixed block 50a there is no radiation hole design, and the first radiation hole 42a of inner stator 40a can be used for freezing mixture and flows out outer rotor-type motor 2a.

In sum, no matter the present invention all shows unlike the prior art feature with regard to purpose, means and effect.But must notice that the foregoing description only is exemplary illustration principle of the present invention and effect, but not is used to limit the scope of the invention.Protection domain of the presently claimed invention should be as appending claims institute restricted portion.

Claims

1. compressor comprises:

One housing;

One freezing mixture compression set is placed in this housing;

One outer rotor-type motor comprises:

One bent axle connects this freezing mixture compression set;

One external rotor is fixed in this bent axle;

One inner stator is positioned at this external rotor; And

At least one bearing, it is located between this inner stator and this bent axle; And

One fixed block, this fixed block is in order to be fixed in this housing with this inner stator.

2. compressor as claimed in claim 1, wherein this outer rotor-type motor also comprises a heat radiation runner, described heat radiation runner connects this inner stator and this external rotor.

3. compressor as claimed in claim 2, wherein this heat radiation runner comprises at least one first radiation hole and at least one second radiation hole, and this at least one first radiation hole is positioned at this inner stator one side, and this at least one second radiation hole is positioned at this external rotor one side.

4. compressor as claimed in claim 3, wherein this heat radiation runner also comprises at least one the 3rd radiation hole, wherein this at least one the 3rd radiation hole is positioned at this fixed block, and the position of this first radiation hole cooperates the position of the 3rd radiation hole.

5. compressor as claimed in claim 4, wherein this bent axle also comprises a disk body, this disk body is fixed in a side of this external rotor, by this disk body to link this bent axle and this external rotor.

6. compressor as claimed in claim 5, wherein this heat radiation runner also comprises at least one hot hole that scatters, this at least one hot hole that scatters is positioned at this disk body, and the position of this second radiation hole cooperates this position that scatters hot hole.

7. compressor as claimed in claim 5 also comprises an equilibrium block, and this equilibrium block is fixed in a side of this disk body.

8. compressor as claimed in claim 1, wherein the cross section of this fixed block is reverse U shape, and the material of this fixed block is cast iron or panel beating.

9. as claim 1 or 8 described compressors, wherein a side of this fixed block is fixed at this inner stator, and the opposite side of this fixed block is welded in this housing.

10. compressor as claimed in claim 1, wherein this outer rotor-type motor is a Brushless DC motor.