CN208831243U - Rotary compressor and its base bearing - Google Patents
Rotary compressor and its base bearing Download PDFInfo
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- CN208831243U CN208831243U CN201820607019.6U CN201820607019U CN208831243U CN 208831243 U CN208831243 U CN 208831243U CN 201820607019 U CN201820607019 U CN 201820607019U CN 208831243 U CN208831243 U CN 208831243U
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- base bearing
- rotary compressor
- bearing
- taper connection
- connection section
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Abstract
The utility model discloses a kind of rotary compressor and its base bearings, the base bearing (121) includes flange portion (1211) and hub portion (1213), it is formed between hub portion and flange portion taper connection section (1212), the diameter of taper connection section is gradually incremented by towards flange portion.Rotary compressor (100) includes the compression mechanism of motor (128) and lower section, and motor-driven crankshaft (122) runs through base bearing (121), cylinder (123) and the supplementary bearing (124) from top to bottom set gradually.Wherein base bearing is preferably integrally casting part, and the conical surface of taper connection section is casting and forming face, is formed in the casting of bearing crude product and is no longer processed in base bearing finishing.Taper connection section can enhance the coupling stiffness and intensity of flange portion and hub portion, be effectively improved the rigidity for improving base bearing, reduce the deflection deformation of crankshaft, and then improve the reliability of compressor, improve performance, improve efficiency.
Description
Technical field
The utility model relates to field of refrigeration equipments, more particularly, to a kind of base bearing for rotary compressor
With the rotary compressor with the base bearing.
Background technique
The structure of rotary compressor mainly includes compression mechanism, motor, shell, four part of liquid storage device.Wherein, compressor
Structure mainly includes cylinder, supplementary bearing, base bearing, piston, crankshaft and slide plate；Motor includes stator and rotor.Rotor is followed to rotate
Crankshaft axially through supplementary bearing, cylinder and base bearing, crankshaft includes countershaft, eccentric shaft and three sections of main shaft, and countershaft is located at pair
In bearing, excentric sleeve is in piston and is located in cylinder, and main shaft is located in base bearing.Wherein, the main shaft section of rotor and crankshaft
It is connected, compression mechanism is fixed by welding in compressor main casing, forms a cantilever beam structure.
At work, stator is powered, and electromagnetic field drives rotor rotation, to rotate with dynamic crankshaft, crankshaft is driven in cylinder
Piston roll the refrigerant in compression cylinder, cylinder interior space is divided into high pressure chest and low pressure chamber, piston rolling process by slide plate
Middle compression refrigerant makes the pressure rise in high pressure chest, and when pressure rise is to the external pressure for being slightly larger than compression mechanism, high pressure gas is cold
Matchmaker can be discharged by the gas vent on the gas vent or supplementary bearing on base bearing.
When compressor is run, under the action of gas load power and electromagnet pull, the main shaft of crankshaft tightly fits in main shaft
It on the inner surface held, and makes rotating motion under rotor drive, the outerface of spindle and base bearing inner surface of crankshaft constitute a pair of
Friction is secondary.Under the action of electromagnet pull, crankshaft can generate certain amount of deflection, amount of deflection is excessive will lead to compressor efficiency reduce,
Rotor collides the problems such as stator generates gap sound, reduces the reliability of compressor, influences the normal use of compressor.It is especially right
Big in the quality of the motor of Gao Jihou, rotor, cantilever beam distance increases, and the amount of deflection that crankshaft generates is bigger, deforms bigger.
If the rigidity of crankshaft and base bearing can be enhanced by increasing crankshaft diameter or base bearing height, exist although crankshaft can be reduced
Flexible deformation under electromagnet pull effect, but increasing crankshaft diameter can increase the rotational line of the secondary area of friction and crankshaft outer surface
Speed, friction minor face product can be increased by increasing base bearing height, be increased so as to cause the friction loss of friction pair.
Utility model content
The purpose of the utility model is to provide a kind of rotary compressor and its base bearings, and the main shaft bearing structure is simple, can
The effectively rigidity of enhancing base bearing, reduces the flexible deformation of crankshaft, improves the use reliability and working performance of compressor.
To achieve the goals above, the utility model provides a kind of base bearing of rotary compressor, and the main shaft is contracted
Flange portion and hub portion are included, taper connection section is formed between the hub portion and the flange portion, the taper connection section
Diameter is gradually incremented by towards the flange portion.
Preferably, the hub portion, the taper connection section and the flange portion are integrally formed.
Preferably, the base bearing is integrated cast member, and the conical surface of the taper connection section is casting and forming face.
Preferably, the conical surface angle a between the conical surface of the taper connection section and the Flange Plane of the flange portion meets:
30°≤a≤80°。
Further, it is preferable to be 45 °≤a≤60 °.
Preferably, the length of the cone element of the taper connection section is t, and the outer diameter of the hub portion is T, is met: 0.2
≤t/T≤0.45。
Preferably, the axial length of the base bearing is not more than 52mm.
Preferably, the hub portion is open column shape and internal diameter is not more than 16mm.
Preferably, the internal perisporium of the hub portion is equipped with oil-way, and the flange portion is equipped with valve seat, the valve seat installation
There is exhaust valve plate.
Correspondingly, the utility model also provides a kind of rotary compressor, the compression mechanism including motor and lower section, described
The crankshaft of motor runs through the base bearing from top to bottom set gradually, cylinder and the supplementary bearing of the compression mechanism, the base bearing
For the base bearing of the above-mentioned rotary compressor of the utility model.
Since the base bearing of the utility model is formed with taper connection section between hub portion and flange portion, enhance flange portion
With the coupling stiffness and intensity of hub portion, raising master can be effectively improved under the basis for not increasing crankshaft diameter and base bearing height
The rigidity of bearing reduces the deflection deformation of matched crankshaft, improves the reliability in compressor use process, improves compression
The working performance and working efficiency of machine.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the rotary compressor of preferred embodiment according to the present utility model；
Fig. 2 is the structural representation of the base bearing of the rotary compressor of the first preferred embodiment according to the present utility model
Figure；
Fig. 3 is the part A enlarged diagram in Fig. 2；And
Fig. 4 is the structural representation of the base bearing of the rotary compressor of the second preferred embodiment according to the present utility model
Figure.
Description of symbols
100 rotary compressor, 110 shell
121 base bearing, 1211 flange portion
1212 taper connection section, 1213 hub portion
122 crankshaft, 1222 eccentric part
123 cylinder, 124 supplementary bearing
125 piston, 126 slide plate
127 exhaust valve plate, 128 motor
1281 rotor, 1282 stator
1211x first flange plane 1211y second flange plane
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually
Be for direction shown in the drawings either for it is vertical, vertically or on gravity direction for each component mutual alignment
Relationship description word.
As shown in Figures 2 to 4, the utility model provides a kind of base bearing 121 for rotary compressor, the master
Bearing 121 includes flange portion 1211 and hub portion 1213, and taper connection section is formed between hub portion 1213 and flange portion 1211
1212, the diameter of taper connection section 1212 is gradually incremented by towards flange portion 1211.
In the present invention, the base bearing 121 between flange portion 1211 and hub portion 1213 by being arranged one section
Conical surface transition connection can not increase crankshaft diameter and the whole height of base bearing in this way to enhance the bonding strength and rigidity of the two
The rigidity for improving base bearing is effectively improved in the case where degree.
Wherein, the hub portion 1213, taper connection section 1212 and flange portion 1211 are preferably integrally formed.More preferably
Ground, base bearing 121 are integrated cast member, and the conical surface of taper connection section 1212 is crude product casting and forming face.That is taper connection section
1212 conical surface can be formed when bearing crude product is cast, and relative dimensions control, and institute are completed in crude product first time roughing
Conical surface non-working surface is stated, is no longer processed in base bearing finishing.
By studying for a long period of time and test of many times, detection discovery, the conical surface of taper connection section 1212 and the method for flange portion 1211
Conical surface angle a between blue plane meets: 30 °≤a≤80 °, when especially meeting 45 °≤a≤60 °, effect is optimal.Referring to figure
2, the first of Fig. 4, conical surface angle a, that is, taper connection section 1212 scalene cone (being shown in figure with cone element) and flange portion 1211
Acute angle between Flange Plane 1211x.
It is highly preferred that the length of the cone element of taper connection section 1212 is t, the outer diameter of hub portion 1213 is T, is met:
0.2≤t/T≤0.45。
If a value is unsatisfactory for 45 °≤a≤60 °, and t/T value is too small, then the rigidity of base bearing 121 is insufficient, and crankshaft 122 operates
Flexible deformation in the process is big, will affect the reliability of compressor, reduces the efficiency etc. of compressor；
If a value is unsatisfactory for 45 °≤a≤60 °, and t/T value is excessive, then the rigidity of base bearing 121 is excessive, leads to crankshaft 122
Increase during operation with 121 increased friction of base bearing, wasted work and abrasion, the reliability of crankshaft 122 can be dropped, and then reduce pressure
The reliability of contracting machine, setting chamfering also just loses the meaning itself risen, while also will increase processing charges.
Therefore, in specific embodiment of the utility model, conical surface angle a, the length t of cone element and hub portion
1213 outer diameter T should meet above-mentioned value and limit, more effectively to improve the rigidity of base bearing, improve compressor efficiency and can
By property.
It is the another embodiment of the utility model shown in Fig. 4, only changes fixation of the base bearing 121 in compressor
Mode, i.e. Fig. 2, which are shown, to be connected by screw with cylinder 123, and the peripheral part of Fig. 4 is fixedly welded on shell 110, remaining same Fig. 2,
Details are not described herein.
Particularly, in a specific embodiment of the utility model, to avoid increasing friction minor face product, main shaft is limited
The axial length for holding 121 is not more than 52mm.On this basis, hub portion 1213 is open column shape and internal diameter is limited to be not more than
16mm will increase friction minor face product and outer surface linear velocity to avoid excessive crankshaft diameter.
Specifically, referring to fig. 2 to Fig. 4, base bearing 121 includes flange portion 1211 and hub portion 1213,1211 He of flange portion
Between hub portion 1213 be equipped with taper connection section 1212, flange portion 1211 include first flange plane 1211x and with the first method
Blue plane 1211x opposite second flange plane 1211y.Valve seat is additionally provided in flange portion 1211 for installing exhaust valve plate
127 and lift stopper.The internal perisporium of hub portion 1213 is equipped with oil-way, to lubricate the crankshaft 122 passed through.In addition it needs
It is noted that being further typically provided with gas vent on base bearing 121 or supplementary bearing 124, these structures are for those skilled in the art
All it is to be understood that and easy to accomplish for member, therefore is not described in detail.
The rotary compressor 100 of specific embodiment according to the present utility model is described in detail below with reference to Fig. 1, wherein
Using the above-mentioned base bearing 121 of the utility model.
As shown in Figure 1, the rotary compressor 100 includes: shell 110, compression mechanism and motor 128.
Specifically, compression mechanism is located in shell 110 referring to Fig. 1, the above mechanism include base bearing 121, crankshaft 122,
Cylinder 123, supplementary bearing 124, piston 125 and slide plate 126.The top of cylinder 123 is arranged in base bearing 121, and supplementary bearing 124 is arranged
In the bottom of cylinder 123.The compression chamber of compression mechanism, crankshaft are limited between base bearing 121, supplementary bearing 124 and cylinder 123
122 run through base bearing 121, cylinder 123 and supplementary bearing 124.The motor 128 of rotary compressor 100 is arranged in shell 110.
As shown in Figure 1, the stator 1282 of motor 128 is fixed in shell 110, the rotor 1281 and song of motor 128
Axis 122 is connected.Crankshaft 122 has eccentric part 1222, and eccentric part 1222 is located in compression chamber, and piston 125 is located at eccentric part 1222
On.
When compressor 100 is powered, electromagnetic field drives rotor 1281 to rotate, to rotate with dynamic crankshaft 122,122 band of crankshaft
The piston 125 taken offence in cylinder 123 rolls the refrigerant in compression cylinder 123, and 123 inner space of cylinder is divided into high pressure by slide plate 126
Chamber and low pressure chamber, compression refrigerant in 125 rolling process of piston, make the pressure rise in high pressure chest, when pressure rise is to being slightly larger than
The external pressure of compression mechanism, pressurized gas refrigerant can pass through the gas vent on the gas vent or supplementary bearing 124 on base bearing 121
Discharge.
Other of the compressor 100 of embodiment according to the present utility model are constituted and are operated for ordinary skill people
Member for be all it is known, be not described in detail herein.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the utility model is to each
No further explanation will be given for the possible combination of kind.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (8)
1. a kind of base bearing of rotary compressor, which is characterized in that the base bearing (121) is integrated cast member and including method
Blue portion (1211) and hub portion (1213), are formed with taper connection between the hub portion (1213) and the flange portion (1211)
Section (1212), the diameter of the taper connection section (1212) are gradually incremented by towards the flange portion (1211)；
Wherein, the conical surface of the taper connection section (1212) is crude product casting and forming face, the cone of the taper connection section (1212)
The length of face bus is t, and the outer diameter of the hub portion (1213) is T, is met: 0.2≤t/T≤0.45.
2. the base bearing of rotary compressor according to claim 1, which is characterized in that the hub portion (1213), institute
It states taper connection section (1212) and the flange portion (1211) is integrally formed.
3. the base bearing of rotary compressor according to claim 1, which is characterized in that the taper connection section (1212)
The conical surface and the flange portion (1211) Flange Plane between conical surface angle a meet: 30 °≤a≤80 °.
4. the base bearing of rotary compressor according to claim 3, which is characterized in that 45 °≤a≤60 °.
5. the base bearing of rotary compressor described according to claim 1~any one of 4, which is characterized in that the master
The axial length of bearing (121) is not more than 52mm.
6. the base bearing of rotary compressor according to claim 5, which is characterized in that the hub portion (1213) is sky
Stem shape and internal diameter are not more than 16mm.
7. the base bearing of rotary compressor according to claim 6, which is characterized in that the hub portion (1213) it is interior
Peripheral wall is equipped with oil-way, and the flange portion (1211) is equipped with valve seat, and the valve seat is equipped with exhaust valve plate (127).
8. a kind of rotary compressor, the compression mechanism including motor (128) and lower section, the crankshaft of motor (128) driving
(122) run through the base bearing (121) from top to bottom set gradually, cylinder (123) and the supplementary bearing (124) of the compression mechanism,
It is characterized in that, the base bearing (121) is the master of the rotary compressor according to any one of claim 1~7
Bearing (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820607019.6U CN208831243U (en) | 2018-04-25 | 2018-04-25 | Rotary compressor and its base bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820607019.6U CN208831243U (en) | 2018-04-25 | 2018-04-25 | Rotary compressor and its base bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831243U true CN208831243U (en) | 2019-05-07 |
Family
ID=66304162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820607019.6U Active CN208831243U (en) | 2018-04-25 | 2018-04-25 | Rotary compressor and its base bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208831243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434566A (en) * | 2019-09-18 | 2019-11-12 | 广东扬山联合精密制造股份有限公司 | Without the processing technology of collar flange |
-
2018
- 2018-04-25 CN CN201820607019.6U patent/CN208831243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434566A (en) * | 2019-09-18 | 2019-11-12 | 广东扬山联合精密制造股份有限公司 | Without the processing technology of collar flange |
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