CN2818852Y - Rotation axis structure of piston compressor - Google Patents
Rotation axis structure of piston compressor Download PDFInfo
- Publication number
- CN2818852Y CN2818852Y CN 200520027215 CN200520027215U CN2818852Y CN 2818852 Y CN2818852 Y CN 2818852Y CN 200520027215 CN200520027215 CN 200520027215 CN 200520027215 U CN200520027215 U CN 200520027215U CN 2818852 Y CN2818852 Y CN 2818852Y
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- CN
- China
- Prior art keywords
- rolling piston
- cylinder
- rotary shaft
- casing
- piston compressor
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Abstract
The utility model relates to a rotary shaft structure for a rotary piston compressor, which comprises a housing, an electric mechanism part, a rotary shaft, an upper and a lower bearings, a cylinder, a compressing mechanism part and a bottom seat, wherein the housing is composed of a shell, and an upper and a lower covers, and the upper and the lower covers are connected to both ends of the shell. The electric mechanism part is fixed on the housing and is composed of a stator and a rotor rotating in the stator; the rotary shaft is combined at the rotor center; the upper bearing and the lower bearing support the other end of the rotary shaft, and the cylinder forms is fixed in the housing; the upper bearing and the lower bearing are covered on the upper and the lower surfaces of the cylinder and form inner space together. The compressing mechanism part is arranged in the cylinder and is composed of an annular rolling piston which is arranged on the eccentric part of the rotary shaft to rotate; the bottom seat supports the housing on the lower part of the housing; the peripheral surface of the eccentric part of the rotary shaft is provided with at least two axial grooves. As the peripheral surface of the eccentric part of the rotary shaft is provided with at least two axial grooves, an area where the rotary shaft and the rolling piston are contacted is reduced; simultaneously, the utility model is favorable for lubrication oil to lubricate a contact surface, reduces frictional resistance and reduces frictional loss.
Description
Technical field
The utility model belongs to air conditioner and uses the rolling piston compressor field, particularly relates to a kind of revolute axes configuration that can reduce the rolling piston compressor of surface friction drag between running shaft and the rolling piston.
Background technique
In general, compressor is the part in the freezing cycle device, is to pressurizes refrigerant, makes the pressure of refrigeration agent and the device that temperature is fit to special purpose.Freezing cycle device comprises that compressor, condenser, expansion gear, vaporizer constitute, and each parts interconnects, and constitutes the circulatory system of sealing.
This freezing cycle device, compression is drawn into the refrigerant gas of the low-temp low-pressure state in the compressor, discharge with high-temperature high-pressure state, and the refrigerant gas of discharging discharges latent heat to the outside by condenser the time, thus the liquid state of being converted into.Simultaneously, by expansion gear the time, reduce pressure, and then, evaporate the refrigeration agent of low-pressure state, thereby absorb outside heat by in the process of vaporizer.And vaporized refrigeration agent then flow in the compressor again, thus said process repeatedly.
Freezing cycle device generally is installed on the electrical equipment such as air conditioner or refrigerator, thereby utilizes cold air and the hot gas that forms in condenser and vaporizer, and comfort level in the holding chamber or assurance food are fresh.
Fig. 1 is a rolling piston compressor structure sectional view.Rolling piston compressor as shown in Figure 1, its main structure includes casing 14, mechanism portion and compression mechanical part.A certain amount of lubricant oil of the internal reservoir of casing and connection are provided with gas suction pipe 6 and gas outlet pipe 1; Mechanism portion is arranged on the top of casing and produces rotating force; Compression mechanical part is arranged on the bottom of casing and utilizes the rotating force compressed refrigerant.
Mechanism portion is to be made of stator 3 and rotor 13.Stator is fixed on the inside of casing and from outside turn-on power, rotor rotates every fixed gap installation and with stator is interactional simultaneously in the inside of stator.
The main structure of compression mechanical part includes cylinder 10, upper bearing (metal) 5 and lower bearing 7, running shaft 12, rolling piston 11.Wherein, cylinder forms annular and is arranged on the inside of casing; Upper bearing (metal) and lower bearing cover the upper and lower surface of cylinder separately and form the inner space together; Running shaft is pressed in the rotor, and is supported and the transmission rotating force by upper bearing (metal) and lower bearing; Rolling piston is contained in the rotating shaft eccentric portion and rotates, and when circling round in the inner space of cylinder compressed refrigerant.
The running shaft of prior art such as Fig. 2, shown in Figure 3, the outer circumferential face of its rotating shaft eccentric portion is smooth complete.The rotating shaft eccentric portion of this structure and the area of contact of rolling piston are big, and surface friction drag is big, so frictional loss is big.
Summary of the invention
The utility model provides a kind of revolute axes configuration that can reduce the rolling piston compressor of surface friction drag between running shaft and the rolling piston for solving the technical problem that exists in the known technology.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: the revolute axes configuration of the utility model rolling piston compressor, and the structure of rolling piston compressor comprises: by the loam cake of shell, the sealed at both ends connection of shell and the casing that lower cover is formed; The mechanism portion that the rotor that is fixed on the stator on the casing and rotates in stator is formed; Running shaft in the rotor center combination, the upper bearing (metal) of the supporting rotating shaft the other end, lower bearing, form annular and be fixed on the cylinder of casing inside, the upper and lower surface that upper bearing (metal), lower bearing cover cylinder forms the inner space together, in cylinder interior, be contained in the compression mechanical part of the annular rolling piston composition that rotates in the rotating shaft eccentric portion; Cylinder one end is connected with gas suction pipe, and constitutes at the base of casing lower support casing; On the outer circumferential face of rotating shaft eccentric portion, be provided with at least two axial grooves.
Described axial groove is symmetrically distributed with the symmetry plane of eccentric part.
The shape of cross section of described axial groove can be rectangle, trapezoidal, triangle, circular arc etc.
Advantage and the good effect that the utlity model has are: the revolute axes configuration of the utility model rolling piston compressor, owing on the outer circumferential face of rotating shaft eccentric portion, be provided with at least two axial grooves, so just reduced the area of contact of running shaft and rolling piston, help the oil lubrication surface of contact simultaneously, reduce surface friction drag, reduced frictional loss.
In addition,, can reduce detent torque, reduce cost because the quality of fluting back eccentric part reduces.
Description of drawings
Fig. 1 is a rolling piston compressor structure sectional view;
Fig. 2 is the running shaft plan view of prior art;
Fig. 3 is the running shaft right elevation of prior art;
Fig. 4 is a running shaft plan view of the present utility model;
Fig. 5 is a running shaft right elevation of the present utility model.
Embodiment
Followingly the utility model is described in detail with reference to drawings and Examples.
The revolute axes configuration of the utility model rolling piston compressor, as Fig. 1, Fig. 4, shown in Figure 5, the structure of rolling piston compressor comprises: the casing of being made up of the loam cake 2 and the lower cover 8 of shell 4, the sealed at both ends connection of shell 14; Be fixed on stator 3 on the casing and rotor rotated 13 is formed in stator mechanism portion; Running shaft 12 in the rotor center combination, the upper bearing (metal) 5 of the supporting rotating shaft the other end, lower bearing 7, form annular and be fixed on the cylinder 10 of casing inside, the upper and lower surface that upper bearing (metal), lower bearing cover cylinder forms the inner space together, in cylinder interior, be contained in the compression mechanical part of annular rolling piston 11 compositions of rotation in the rotating shaft eccentric portion 15; Cylinder one end is connected with gas suction pipe 6, and constitutes at the base 9 of casing lower support casing.
On the outer circumferential face of rotating shaft eccentric portion, be provided with at least two axial grooves 16.
Axial groove is symmetrically distributed with the symmetry plane of eccentric part.Symmetry plane symmetrical distribution at eccentric part is in order to guarantee that running shaft is being provided with the later dynamic balancing of axial groove.
The shape of cross section of axial groove can be rectangle, trapezoidal, triangle, circular arc etc.
The running with rolling piston compressor now is described as follows:
The stator of mechanism portion is connected power supply and rotor, and the running shaft of compression mechanical part rotates with rotor, and rolling piston is in the eccentric rotation in the inner space of cylinder.Because the off-centre of rolling piston rotation, the suction chamber that refrigerant gas flows into cylinder continues to be compressed to certain pressure, surpass the moment of casing internal pressure then at the pressing chamber pressure of cylinder, refrigerant gas is discharged to casing inside by the exhaust port of upper bearing (metal) to baffler.
The revolute axes configuration of the utility model rolling piston compressor, owing on the outer circumferential face of rotating shaft eccentric portion, be provided with at least two axial grooves, so just reduced the area of contact of running shaft and rolling piston, help the oil lubrication surface of contact simultaneously, reduce surface friction drag, reduced frictional loss.
In addition,, can reduce detent torque, reduce cost because the quality of fluting back eccentric part reduces.
Claims (3)
1, a kind of revolute axes configuration of rolling piston compressor, the structure of rolling piston compressor comprises: by the loam cake of shell, the sealed at both ends connection of shell and the casing that lower cover is formed; The mechanism portion that the rotor that is fixed on the stator on the casing and rotates in stator is formed; Running shaft in the rotor center combination, the upper bearing (metal) of the supporting rotating shaft the other end, lower bearing, form annular and be fixed on the cylinder of casing inside, the upper and lower surface that upper bearing (metal), lower bearing cover cylinder forms the inner space together, in cylinder interior, be contained in the compression mechanical part of the annular rolling piston composition that rotates in the rotating shaft eccentric portion; Cylinder one end is connected with gas suction pipe, and constitutes at the base of casing lower support casing; The outer circumferential face that it is characterized in that rotating shaft eccentric portion is provided with at least two axial grooves.
2, the revolute axes configuration of rolling piston compressor according to claim 1 is characterized in that axial groove is symmetrically distributed with the symmetry plane of eccentric part.
3, the revolute axes configuration of rolling piston compressor according to claim 1, the shape of cross section that it is characterized in that axial groove can be rectangle, trapezoidal, triangle, circular arc etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520027215 CN2818852Y (en) | 2005-08-31 | 2005-08-31 | Rotation axis structure of piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520027215 CN2818852Y (en) | 2005-08-31 | 2005-08-31 | Rotation axis structure of piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2818852Y true CN2818852Y (en) | 2006-09-20 |
Family
ID=37004907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520027215 Expired - Fee Related CN2818852Y (en) | 2005-08-31 | 2005-08-31 | Rotation axis structure of piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2818852Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511257A (en) * | 2012-11-22 | 2014-01-15 | 广东美芝制冷设备有限公司 | Rotary compressor and crank shaft assembly thereof |
-
2005
- 2005-08-31 CN CN 200520027215 patent/CN2818852Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511257A (en) * | 2012-11-22 | 2014-01-15 | 广东美芝制冷设备有限公司 | Rotary compressor and crank shaft assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060920 |