CN105221388A - There is the compressor of external rotor electric machine - Google Patents
There is the compressor of external rotor electric machine Download PDFInfo
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- CN105221388A CN105221388A CN201410312424.1A CN201410312424A CN105221388A CN 105221388 A CN105221388 A CN 105221388A CN 201410312424 A CN201410312424 A CN 201410312424A CN 105221388 A CN105221388 A CN 105221388A
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- bearing
- compressor
- electric machine
- mainframe
- stator
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Abstract
The invention discloses a kind of compressor with external rotor electric machine, comprising: housing; Mainframe, described mainframe is located in described housing; Bearing, described bearing is located on described mainframe; Motor, described motor comprises stator and is located at the rotor of described stator exterior, and described stator sleeve is located on the outer circumferential face of described bearing; Bent axle, described bent axle is through described bearing and described rotor, and described rotor drives described crankshaft rotating; And connecting rod, described connecting rod is connected with described bent axle.According to the compressor with external rotor electric machine of the embodiment of the present invention, the good welding performance of bearing and stator, welding procedure is simple, prevents the risk that stator comes off, and rate of can reducing the number of rejects and seconds, reduce costs.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of compressor with external rotor electric machine.
Background technique
Compressor is as the core component of refrigeration appliance, and the impact of its motor technology on integrating compressor is extremely important, especially in efficiency, noise, low voltage startup, cost etc.External rotor electric machine because adopting the built-in and rotor external structure of stator, it has outstanding advantages such as startup ability is strong, the high and low cost of material of efficiency, thus pay close attention to by increasing compressor producer.
Traditional external rotor electric machine, need be fixed on mainframe by stator, interference generally can be adopted to cold pressing and gap weldig two kinds of modes are fixed, and makes that stator is on-stream can not rotate with rotor.All there is larger defect in these two kinds of means of fixation: after a, interference are colded pressing, and mainframe endoporus produces distortion because of pressure effect, can produce more severe wearing and tearing during the rotation of bent axle in mainframe endoporus; B, for easy to process, crankshaft hole and cylinder-bore are generally cast as an entirety by mainframe, material is gray cast iron, and stator material is electrical steel, the non-constant of welding performance of cast iron and silicon steel, welding procedure is not easily grasped, and can not ensure the welding quality of mainframe and inner stator, there is the risk that inner stator comes off.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the present invention needs to provide a kind of compressor with external rotor electric machine, the good welding performance of this bearing of compressor and stator, and welding procedure is simple, prevents the risk that stator comes off, and rate of can reducing the number of rejects and seconds, reduce costs.
According to the compressor with external rotor electric machine of the embodiment of the present invention, comprising: housing; Mainframe, described mainframe is located in described housing; Bearing, described bearing is located on described mainframe; Motor, described motor comprises stator and is located at the rotor of described stator exterior, and described stator sleeve is located on the outer circumferential face of described bearing; Bent axle, described bent axle is through described bearing and described rotor, and described rotor drives described crankshaft rotating; And connecting rod, described connecting rod is connected with described bent axle.
In prior art, bearing and mainframe are formed in one structure and be ironcasting, and stator is electrical steel part, stator and bearing welding performance poor, welding procedure is not easily grasped, and can not ensure the quality of welding.According to the compressor of the embodiment of the present invention, by bearing and mainframe are designed to Split type structure, thus the material of good welding performance can be utilized to manufacture bearing, improve the welding performance of bearing and stator thus, reduce the difficulty of welding procedure, and then the quality of welding can be ensured, prevent the risk that stator comes off.In addition, by making bearing and mainframe be Split type structure, bearing and mainframe can be manufactured respectively like this, thus the manufacture difficulty of bearing and mainframe can be reduced, promote the structural behaviour of bearing and mainframe, and then improve structure stability and the working life of compressor.And bearing and mainframe manufacture respectively, thus rate of can reducing the number of rejects and seconds, reduce costs.
In addition, the compressor with external rotor electric machine according to the present invention also can have following additional technical feature:
According to one embodiment of present invention, described bearing is from described mainframe to downward-extension, and described rotor axially cross section is U-shaped, and described rotor is set in the bottom of described stator.
According to one embodiment of present invention, described mainframe comprises: main part, and described bearing is located on described main part; Erection column, described erection column is from the lower end of described main part to downward-extension, and described erection column is connected with described housing.
According to one embodiment of present invention, described erection column comprises multiple and arranges in the circumferential direction of described main part.
According to one embodiment of present invention, described erection column is four and is evenly arranged in the circumferential direction of described main part.
According to one embodiment of present invention, described compressor also comprises shock absorber, and described shock absorber is located at the bottom of described erection column and is connected with described housing.
According to one embodiment of present invention, described bearing is connected on described main part by fastening piece.
According to one embodiment of present invention, described bearing is provided with the first positioning hole, and described main part is provided with the second positioning hole, described fastening piece through described first positioning hole and described second positioning hole so that described bearing is connected on described main part.
According to one embodiment of present invention, the outer circumferential face of described bearing is provided with locating slot, and described stator is provided with positioning block, and described positioning block coordinates with described locating slot.
According to one embodiment of present invention, one end away from described bearing of described connecting rod is spherical.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the sectional view of the compressor according to the embodiment of the present invention;
Fig. 2 is the explosive view of the compressor shown in Fig. 1;
Fig. 3 is the mainframe of the compressor shown in Fig. 1 and the explosive view of bearing;
Fig. 4 is the mainframe of the compressor shown in Fig. 1 and the sectional view of bearing;
Fig. 5 is the stator of the compressor shown in Fig. 1 and the sectional view of bearing;
Fig. 6 is the sectional view of the bent axle of the compressor shown in Fig. 1, bearing and rotor;
Fig. 7 is the explosive view of the bent axle of the compressor shown in Fig. 1, connecting rod and piston.
Description of reference numerals
Compressor 100;
Housing 1;
Mainframe 2; Main part 21; Second positioning hole 211; Erection column 22; Compression chamber limited section 23; Compression chamber 231;
Bearing 3; Locating slot 31; Shaft through-hole 32; First positioning hole 33;
Motor 4; Stator 41; Positioning block 411; Rotor 42;
Bent axle 5; Connecting rod 6; Piston 7; Receiving groove 71; Shock absorber 8; Fastening piece 9.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below with reference to Fig. 1-Fig. 7, the compressor 100 with external rotor electric machine according to the embodiment of the present invention is described.First it should be noted that, may be used in any chiller plant according to the compressor 100 of the embodiment of the present invention, especially, compressor 100 according to the present invention is specially adapted to refrigerator system, and particularly, this compressor 100 can be piston compressor 100.
As shown in Fig. 1-Fig. 7, according to the compressor 100 of the embodiment of the present invention, comprise housing 1, mainframe 2, bearing 3, motor 4, bent axle 5 and connecting rod 6, compressor 100 also comprises piston 7 in addition.As shown in Figure 1, mainframe 2, bearing 3, motor 4, bent axle 5, connecting rod 6 and piston 7 are all located in housing 1.
Bearing 3 is located on mainframe 2, and here it is to be understood that bearing 3 and mainframe 2 are Split type structure, namely bearing 3 and mainframe 2 are assembled after manufacturing respectively again.Alternatively, bearing 3 can be arbitrary with the assembling mode of mainframe 2, such as bearing 3 can be connected by dismountable mode with mainframe 2, such as fastening piece connection, buckle structure connection etc., certain bearing 3 and mainframe 2 also can be connected by non-removable mode, such as welding, interference fit, bonding etc.
Wherein, mainframe 2 can be formed with compression chamber 231, piston 7 is located in compression chamber 231.Motor 4 comprises stator 41 and is located at the rotor 42 of stator 41 outside, bent axle 5 is through bearing 3 and rotor 42, and particularly, bearing 3 is provided with for the shaft through-hole 32 through bent axle 5, as shown in Figure 3-Figure 5, bent axle 5 is free to rotate in this shaft through-hole 32 through this shaft through-hole 32.Rotor 42 is with dynamic crankshaft 5 to rotate, and rotor 42 is fixed on bent axle 5, and wherein, rotor 42 can be arbitrary with the means of fixation of bent axle 5, such as, can be connected by welding, interference fit or bonding mode, relative fixing to ensure between rotor 42 with bent axle 5.
Connecting rod 6 is connected with bent axle 5, connecting rod 6 is connected with the top of bent axle 5 particularly, one end away from bent axle 5 of connecting rod 6 is connected with piston 7, the spinning movement under the drive of rotor 42 of such bent axle 5, effect through connecting rod 6 changes into the to-and-fro motion of piston 7, and then reaches the object carrying out compressing in piston 7.
Wherein, stator 41 is set on the outer circumferential face of bearing 3, and wherein stator 41 is arbitrary with the Placement of bearing 3.Such as stator 41 and bearing 3 can by welding, interference fit or bonding mode connect.In order to reach more stable linkage structure, preferably, stator 41 is connected by the mode of welding with bearing 3.
In prior art, bearing and mainframe are formed in one structure and be ironcasting, and stator is electrical steel part, stator and bearing welding performance poor, welding procedure is not easily grasped, and can not ensure the quality of welding.According to the compressor 100 of the embodiment of the present invention, by bearing 3 and mainframe 2 are designed to Split type structure, thus the material of good welding performance can be utilized to manufacture bearing 3, improve the welding performance of bearing 3 and stator 41 thus, reduce the difficulty of welding procedure, and then the quality of welding can be ensured, prevent the risk that stator 41 comes off.In addition, by making bearing 3 and mainframe 2 be Split type structure, bearing 3 and mainframe 2 can be manufactured respectively like this, thus the manufacture difficulty of bearing 3 and mainframe 2 can be reduced, promote the structural behaviour of bearing 3 and mainframe 2, and then improve structure stability and the working life of compressor 100.And bearing 3 manufactures respectively with mainframe 2, thus rate of can reducing the number of rejects and seconds, reduce costs.
Particularly, bearing 3 can be non-ironcasting, and such as bearing 3 can be press forging, metallic sintered products, stamping part, forge piece etc.Preferably, bearing 3 is identical with the manufactured materials of stator 41, and processing technology can be identical, the welding performance of bearing 3 and stator 41 can be improved thus further, welding procedure is more simple, improves yield rate, and then the structural behaviour of compressor 100 can be made better.
As Figure 1-Figure 4, in some embodiments of the invention, bearing 3 is from mainframe 2 to downward-extension, and namely bearing 3 can be located at the bottom of mainframe 2.Particularly, bearing 3 can be connected by fastening piece 9 with mainframe 2, and fastening piece 9 can be such as bolt or rivet, in such as, example shown in Fig. 2 and Fig. 3, bearing 3 is connected by three bolts with mainframe 2, and bearing 3 can be made thus more stable with the connection of mainframe 2.As shown in figures 1 to 6, rotor 42 axially cross section is U-shaped, rotor 42 is solid of rotation and it is opening up, rotor 42 is set in the bottom of stator 41, bearing 3 is through the underpart of rotor 42, rotor 42 can be made so more stable in rotation process, and stressed more even, the startability of compressor 100 is better.
In one embodiment of the invention, as shown in Figure 3 and Figure 4, mainframe 2 comprises main part 21 and erection column 22.Bearing 3 is located on main part 21, and particularly, bearing 3 is connected on main part 21 by fastening piece 9.Further, as shown in figures 3 to 6, bearing 3 is provided with the first positioning hole 33, main part 21 is provided with the second positioning hole 211, fastening piece 9 to be connected on main part 21 by bearing 3, can make the connection of bearing 3 on main part 21 through the first positioning hole 33 and the second positioning hole 211 thus, it is convenient, accurate to locate.
Main part 21 can be roughly platy structure, and bearing 3 is located at the middle part of main part 21.Main part 21 top is provided with compression chamber limited section 23, and compression chamber 231 is formed in compression chamber limited section 23.Erection column 22 is from the lower end of main part 21 to downward-extension, and erection column 22 is connected with housing 1, and that is, the upper end of erection column 22 is connected with the lower end of main part 21, and the lower end of erection column 22 is connected with housing 1.Advantageously, erection column 22 and main part 21 are formed in one structure, and erection column 22 can be made thus large with the join strength of main part 21, and linkage structure is more stable.
Alternatively, erection column 22 comprises multiple and multiple erection column 22 and arranges in the circumferential direction of main part 21.In example as shown in Figures 2 and 3, erection column 22 is four and four erection columns 22 are evenly arranged in the circumferential direction of main part 21, and the supporting effect of erection column 22 pairs of main parts 21 can be made thus more stable, stressed more even.
In preferred exemplary more of the present invention, as depicted in figs. 1 and 2, compressor 100 also comprises shock absorber 8, shock absorber 8 is located at the bottom of erection column 22 and is connected with housing 1, that is, erection column 22 is connected with housing 1 by shock absorber 8, particularly, the upper end of shock absorber 8 is connected with the bottom of erection column 22, and the lower end of shock absorber 8 is connected with housing 1.By arranging shock absorber 8, thus can buffer function be played, thus vibration when compressor 100 starts can be slowed down further, reduce noise, extend the working life of compressor 100.Particularly, shock absorber 8 can be multiple and equal with the number of erection column 22.
In some embodiments of the invention, the outer circumferential face of bearing 3 can be provided with locating slot 31, stator 41 is provided with positioning block 411, positioning block 411 coordinates with locating slot 31, the Position location accuracy between stator 41 and bearing 3 can be ensured thus, and then the axial position of stator 41 and rotor 42 can be ensured.Particularly, locating slot 31 can be two and be oppositely arranged on the outer circumferential face of bearing 3, positioning block 411 is also two and is located at the inner of stator 41, when assembling, first two positioning blocks 411 are positioned in two locating slots 31, then adjust the relative position of bearing 3 and stator 41, and then complete the assembling of stator 41 and bearing 3.In another embodiment as shown in Figure 1, locating slot 31 can also be arranged around the outer circumferential face of bearing 3 for one week, and positioning block 411 also can be arranged around the inner of stator 41 for one week, and the structure of positioning block 411 and locating slot 31 can be made thus more stable.
In some embodiments of the invention, as shown in Figure 7, one end away from bearing 3 of connecting rod 6 is spherical, when one end spherical like this extend in piston 7, connecting rod 6 can freely rotate around spherical one end to a certain extent, bearing 3 can be overcome thus be connected with mainframe 2 and the form and position tolerance that produces, ensure the normal to-and-fro motion of piston 7.Particularly, be limited with the receiving groove 71 with spherical one end form fit of bearing 3 in piston 7, as shown in Figure 7, spherical one end of bearing 3 extend in this receiving groove 71 to deviate from, and freely can rotate in this receiving groove 71.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. there is a compressor for external rotor electric machine, it is characterized in that, comprising:
Housing;
Mainframe, described mainframe is located in described housing;
Bearing, described bearing is located on described mainframe;
Motor, described motor comprises stator and is located at the rotor of described stator exterior, and described stator sleeve is located on the outer circumferential face of described bearing;
Bent axle, described bent axle is through described bearing and described rotor, and described rotor drives described crankshaft rotating; And
Connecting rod, described connecting rod is connected with described bent axle.
2. the compressor with external rotor electric machine according to claim 1, is characterized in that, described bearing is from described mainframe to downward-extension, and described rotor axially cross section is U-shaped, and described rotor is set in the bottom of described stator.
3. the compressor with external rotor electric machine according to claim 1, is characterized in that, described mainframe comprises:
Main part, described bearing is located on described main part;
Erection column, described erection column is from the lower end of described main part to downward-extension, and described erection column is connected with described housing.
4. the compressor with external rotor electric machine according to claim 3, is characterized in that, described erection column comprises multiple and arranges in the circumferential direction of described main part.
5. the compressor with external rotor electric machine according to claim 4, is characterized in that, described erection column is four and is evenly arranged in the circumferential direction of described main part.
6. the compressor with external rotor electric machine according to claim 3, is characterized in that, described compressor also comprises shock absorber, and described shock absorber is located at the bottom of described erection column and is connected with described housing.
7. the compressor with external rotor electric machine according to claim 3, is characterized in that, described bearing is connected on described main part by fastening piece.
8. the compressor with external rotor electric machine according to claim 7, it is characterized in that, described bearing is provided with the first positioning hole, described main part is provided with the second positioning hole, described fastening piece through described first positioning hole and described second positioning hole so that described bearing is connected on described main part.
9. the compressor with external rotor electric machine according to claim 1, is characterized in that, the outer circumferential face of described bearing is provided with locating slot, and described stator is provided with positioning block, and described positioning block coordinates with described locating slot.
10. the compressor with external rotor electric machine according to claim 1, is characterized in that, one end away from described bearing of described connecting rod is spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312424.1A CN105221388A (en) | 2014-07-01 | 2014-07-01 | There is the compressor of external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312424.1A CN105221388A (en) | 2014-07-01 | 2014-07-01 | There is the compressor of external rotor electric machine |
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| CN105221388A true CN105221388A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410312424.1A Pending CN105221388A (en) | 2014-07-01 | 2014-07-01 | There is the compressor of external rotor electric machine |
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| CN (1) | CN105221388A (en) |
Cited By (3)
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| CN105927498A (en) * | 2016-05-10 | 2016-09-07 | 广州万宝集团压缩机有限公司 | Suspension type outer rotor compressor |
| CN109555697A (en) * | 2019-01-21 | 2019-04-02 | 宁波拉德驱动技术有限公司 | A kind of compressor external rotor electric machine |
| CN109773362A (en) * | 2019-03-28 | 2019-05-21 | 昆山华恒焊接股份有限公司 | Compressor welding system |
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| CN105927498A (en) * | 2016-05-10 | 2016-09-07 | 广州万宝集团压缩机有限公司 | Suspension type outer rotor compressor |
| CN109555697A (en) * | 2019-01-21 | 2019-04-02 | 宁波拉德驱动技术有限公司 | A kind of compressor external rotor electric machine |
| CN109773362A (en) * | 2019-03-28 | 2019-05-21 | 昆山华恒焊接股份有限公司 | Compressor welding system |
| CN109773362B (en) * | 2019-03-28 | 2023-09-26 | 昆山华恒焊接股份有限公司 | Compressor welding system |
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