CN201874825U - Compressor - Google Patents
Compressor Download PDFInfo
- Publication number
- CN201874825U CN201874825U CN2010205608379U CN201020560837U CN201874825U CN 201874825 U CN201874825 U CN 201874825U CN 2010205608379 U CN2010205608379 U CN 2010205608379U CN 201020560837 U CN201020560837 U CN 201020560837U CN 201874825 U CN201874825 U CN 201874825U
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- CN
- China
- Prior art keywords
- diameter section
- major axis
- iron core
- rotor iron
- bent axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a compressor. The compressor comprises rotor cores and a crank shaft, wherein the rotor cores are provided with shaft holes and sleeved on a major shaft part of the crank shaft; the major shaft part of the crank shaft takes the shape of a step with a small-diameter front part and a large-diameter rear part; the shaft holes of the rotor cores are step-shaped; and the small-diameter section of each shaft hole and the small-diameter section of the major shaft as well as the large-diameter section of each shaft hole and the large-diameter section of the major shaft are in interference fit with each other. As a self-positioning structure in respect of height is arranged between the rotor cores and the crank shaft, the positioning requirement in respect of height of a tool in a hot jacket process of the rotor cores is eliminated, and the tooling and the corresponding check tool for quality control are reduced, thereby simplifying the assembly between the rotor cores and the crank shaft; furthermore, for the reason that the actual volume of the rotor cores is increased, the distribution of the magnetic circuit of the rotor cores is facilitated, and the motor efficiency is improved; additionally, the processing time and the cost of the crank shaft are reduced.
Description
Technical field
The utility model relates to a kind of compressor.
Background technique
Rotary compressor comprises various ways, and as rolling rotor-type, eddy type, blade type etc., rotary compressor mainly is made up of the motor and the pump housing, and as shown in Figure 1, the rotor iron core 2 of motor adopts the interference mode to cooperate with the major axis part of the bent axle of the pump housing 1.Because the rear portion diameter of the major axis part 1 of bent axle must not could satisfy the matching requirements of (also claiming bearing support) of the same flange of bent axle less than its front portion, therefore the diameter of the major axis of most of bent axles part is consistent.Because stator and rotor iron core have strict requirement aspect assembling, at axial direction, require rotor iron core high together with the height of stator iron core again, perhaps rotor iron core exceeds stator iron core slightly.But under the prerequisite of bent axle major diameter unanimity, must use necessary frock could guarantee the assembling height, therefore, the assembling more complicated.
Summary of the invention
The purpose of this utility model is, provides a kind of rotor iron core and bent axle to assemble simple compressor.
A kind of compressor of the present utility model, comprise rotor iron core and bent axle, this rotor iron core is provided with axis hole, and this rotor iron core is sleeved on the major axis part of described bent axle, the major axis of described bent axle partly is step-like that anterior diameter is little, the rear portion diameter is big, the axis hole of described rotor iron core is step-like, the reduced diameter section interference fit of the reduced diameter section of this axis hole and described major axis part, the enlarged diameter section interference fit of the enlarged diameter section of this axis hole and described major axis part.
Because the major axis of bent axle partly is step-like, and the axis hole of rotor iron core also is step-like, limited the height and position of rotor iron core on bent axle by step-like major axis part and step-like axis hole, reduced frock and corresponding quality control cubing, thereby assembling is simple; And, owing to increased the actual volume of rotor iron core, help the rotor iron core magnetic circuit and distribute at the reduced diameter section place iron core of major axis part, improve electric efficiency; And for bent axle, because of having reduced the external diameter of its front end, thereby reduced the rigidity of bent axle, the amount of deflection when having increased motion at this section.
As the preferred embodiment of technique scheme, the nominal diameter of the enlarged diameter section of described major axis part is D1, and the nominal diameter of the reduced diameter section of this major axis part is D2, and the difference of D1 and D2 is greater than 2mm, less than 0.3 times of D1.D1-D2 is greater than 2～3mm, and satisfying the positioning requirements of rotor iron core with bent axle, but D-D2 should can influence amount of deflection otherwise crankshaft front end intensity is too small less than 0.3 times of D1.
As the preferred embodiment of technique scheme, the length that the reduced diameter section of described major axis part matches with described axis hole is L2, and the length that the enlarged diameter section of this major axis part matches with described axis hole is L1, and the ratio of L2 and L1 is greater than 0.05.
As the preferred embodiment of technique scheme, be provided with annular tool withdrawal groove at the rear end surface of described reduced diameter section, to be used for the bent axle semi finishing.
As the preferred embodiment of technique scheme, the degree of depth of described tool withdrawal groove is less than 1mm, to guarantee the intensity of bent axle at the tool withdrawal groove place.
Another kind of compressor of the present utility model, comprise rotor iron core and bent axle, this rotor iron core is provided with axis hole, and this rotor iron core is sleeved on the major axis part of described bent axle, the major axis of described bent axle partly is step-like that anterior diameter is little, the rear portion diameter is big, the reduced diameter section interference fit of the axis hole of described rotor iron core and described major axis part.
As the preferred embodiment of technique scheme, the ear end face of described rotor iron core contacts with the step of described major axis part.
As the preferred embodiment of technique scheme, the nominal diameter of the enlarged diameter section of described major axis part is D1, and the nominal diameter of the reduced diameter section of this major axis part is D2, and the difference of D1 and D2 is greater than 2mm, less than 0.3 times of D1.
As the preferred embodiment of technique scheme, be provided with annular tool withdrawal groove at the rear end surface of described reduced diameter section.
As the preferred embodiment of technique scheme, the degree of depth of described tool withdrawal groove is less than 1mm.
Compared with prior art, the utility model has the advantages that:
(1) because rotor iron core with the self positioning structure that possesses between bent axle on the height, has been eliminated the height positioning requirements of rotor hot jacket operation frock, can reduce frock and corresponding quality control cubing, thereby make rotor iron core become simple with the assembling of bent axle;
(2) owing to increased the actual volume of rotor iron core, help the distribution of its magnetic circuit, improve electric efficiency;
(3) since the anterior diameter of the major axis of bent axle part less than the rear portion diameter, it need carry out accurately machined length and diminish, thereby has reduced the process time and the cost of bent axle.
Description of drawings
Fig. 1 is the assembly structure schematic representation of prior art rotor and bent axle;
Fig. 2 is the utility model embodiment 1 the rotor and the assembly structure schematic representation of bent axle;
Fig. 3 is the partial enlarged view at I place among Fig. 2;
Fig. 4 is the utility model embodiment 2 the rotor and the assembly structure schematic representation of bent axle.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
The utility model is a rotary compressor, as rolling rotor type compressor, scroll compressor, or Horizontai rotary compressor, or reciprocal compressor, as piston compressor or the like.
As shown in Figure 2, present embodiment is a rolling rotor type compressor, and compressor comprises rotor iron core 2 and bent axle.The major axis part 1 of bent axle is step-like that anterior diameter is little, the rear portion diameter is big.The axis hole of rotor iron core 2 also is step-like, reduced diameter section 11 interference fit of the reduced diameter section of this axis hole and major axis part 1, enlarged diameter section 12 interference fit of the enlarged diameter section of this axis hole and major axis part 1.The nominal diameter of the reduced diameter section 11 of major axis part 1 is D2, and the length that matches with axis hole is L2.The nominal diameter of the enlarged diameter section 12 of major axis part 1 is D1, and the length that matches with axis hole is L1.Preferably, D1-D2 need be greater than 2～3mm, and satisfying the positioning requirements of rotor iron core 2 with bent axle, but D1-D2 can not be greater than 0.3 times of D1, otherwise can influence amount of deflection because of the front end intensity of bent axle is too small.Preferably, the ratio of L2 and L1 is greater than 0.05.
Because of the semi-finished needs of bent axle, be provided with annular tool withdrawal groove 11a at the rear end surface of reduced diameter section, be to guarantee the intensity of bent axle at the tool withdrawal groove place, the degree of depth of tool withdrawal groove 11a is smaller, generally is no more than 1mm.
Because the major axis part 1 of bent axle is step-like, adding man-hour, only need the reduced diameter section 11 of major axis part 1 front portion is carried out semi finishing, to guarantee its interference fit precision, and need not change original interference fit precision of the enlarged diameter section 12 at its rear portion, so need carry out accurately machined length and diminish, therefore reduce the time and the cost of processing.
As shown in Figure 4, as different from Example 1, the axis hole of rotor iron core 2 is a circular hole, reduced diameter section 11 interference fit of rotor iron core 2 and major axis part 1, and also the ear end face of rotor iron core 2 contacts with step on the major axis part 1.Because the axis hole of rotor iron core 2 is a circular hole, has reduced the difficulty of die stamping iron core.
Only be specific embodiment of the utility model below, do not limit protection domain of the present utility model with this; Any replacement and the improvement done on the basis of not violating the utility model design all belong to protection domain of the present utility model.
Claims (10)
1. compressor, comprise rotor iron core and bent axle, this rotor iron core is provided with axis hole, and this rotor iron core is sleeved on the major axis part of described bent axle, it is characterized in that: what the major axis of described bent axle was partly little for anterior diameter, the rear portion diameter is big is step-like, the axis hole of described rotor iron core is step-like, the reduced diameter section interference fit of the reduced diameter section of this axis hole and described major axis part, the enlarged diameter section interference fit of the enlarged diameter section of this axis hole and described major axis part.
2. compressor according to claim 1 is characterized in that: the nominal diameter of the enlarged diameter section of described major axis part is D1, and the nominal diameter of the reduced diameter section of this major axis part is D2, and the difference of D1 and D2 is greater than 2mm, less than 0.3 times of D1.
3. compressor according to claim 1 is characterized in that: the length that the reduced diameter section of described major axis part matches with described axis hole is L2, and the length that the enlarged diameter section of this major axis part matches with described axis hole is L1, and the ratio of L2 and L1 is greater than 0.05.
4. the described compressor arbitrary according to claim 1 to 3 is characterized in that: the rear end surface at described reduced diameter section is provided with annular tool withdrawal groove.
5. compressor according to claim 4 is characterized in that: the degree of depth of described tool withdrawal groove is less than 1mm.
6. compressor, comprise rotor iron core and bent axle, this rotor iron core is provided with axis hole, and this rotor iron core is sleeved on the major axis part of described bent axle, it is characterized in that: what the major axis of described bent axle was partly little for anterior diameter, the rear portion diameter is big is step-like, the reduced diameter section interference fit of the axis hole of described rotor iron core and described major axis part.
7. compressor according to claim 6 is characterized in that: the ear end face of described rotor iron core contacts with the step of described major axis part.
8. compressor according to claim 6 is characterized in that: the nominal diameter of the enlarged diameter section of described major axis part is D1, and the nominal diameter of the reduced diameter section of this major axis part is D2, and the difference of D1 and D2 is greater than 2mm, less than 0.3 times of D1.
9. the described compressor arbitrary according to claim 6 to 8 is characterized in that: the rear end surface at described reduced diameter section is provided with annular tool withdrawal groove.
10. compressor according to claim 9 is characterized in that: the degree of depth of described tool withdrawal groove is less than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205608379U CN201874825U (en) | 2010-10-13 | 2010-10-13 | Compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205608379U CN201874825U (en) | 2010-10-13 | 2010-10-13 | Compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874825U true CN201874825U (en) | 2011-06-22 |
Family
ID=44162743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205608379U Expired - Lifetime CN201874825U (en) | 2010-10-13 | 2010-10-13 | Compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050614A (en) * | 2016-08-01 | 2016-10-26 | 珠海凌达压缩机有限公司 | Compressor |
-
2010
- 2010-10-13 CN CN2010205608379U patent/CN201874825U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050614A (en) * | 2016-08-01 | 2016-10-26 | 珠海凌达压缩机有限公司 | Compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |