CN201037461Y - Rotary piston compressor with stage-shape spring hole - Google Patents
Rotary piston compressor with stage-shape spring hole Download PDFInfo
- Publication number
- CN201037461Y CN201037461Y CNU2007200695260U CN200720069526U CN201037461Y CN 201037461 Y CN201037461 Y CN 201037461Y CN U2007200695260 U CNU2007200695260 U CN U2007200695260U CN 200720069526 U CN200720069526 U CN 200720069526U CN 201037461 Y CN201037461 Y CN 201037461Y
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- spring
- spring eye
- outside
- eye
- stepped shape
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Abstract
The utility model relates to a rotary piston compressor with a step-shaped spring eye, which comprises a cylinder, a piston, a crank, a vane and two sealed chambers consisting of the components. The two sealed chambers are respectively a compression chamber and a suction chamber. The cylinder is provided with the spring eye with the internal side of a step structure and the external side of a straight or step structure, and the spring is arranged in the spring eye and fixed by the external side of the spring eye. Compared with the prior art, the utility model has reasonable design, effectively reduces friction of the spring and the cylinder spring eye, avoids spring breakage and increases working reliability of the compressor spring.
Description
Technical field
The utility model relates to rolling piston compressor, relates in particular to a kind of rolling piston compressor with the stepped shape spring eye.
Background technique
Rolling piston compressor belongs to positive displacement compressor, relies on cylinder, piston, bent axle, blade etc. to form two airtight closed cavities, and one is compression chamber, and another is an air aspiration cavity.Along with bent axle rotates, the volume of compression chamber constantly reduces, and the volume of air aspiration cavity constantly increases, and the gas pressure in the compression chamber reaches the purpose of pressurized gas along with the continuous increase that reduces of volume.Blade plays crucial effects with tight contact of piston to rotary-piston formation compression chamber and air aspiration cavity, leaf spring has guaranteed that blade all keeps tight the contact with spring when starting and move, leaf spring is installed in the spring eye of cylinder, and hard-wired effect has been played to leaf spring in the leaf spring hole.
Existing rolling piston compressor cylinder spring eye is cylindrical structural, as shown in Figure 1.Along with the increase of compressor air-discharging amount, the increase of spring length, the unstability of spring increases, easier bending and with the spring eye friction.If do not change the shape of spring eye, only rely on the aperture that changes spring eye to be difficult to head it off.In the spring eye shape still is under the columniform situation, for improving the stability of spring, needs to increase the external diameter of spring, causes the too small even interference of minimum range of spring eye and suction port, and the intensity of cylinder can not be guaranteed, reliability decrease.
Because the existing cylinder spring eye of rolling piston compressor is a cylindrical structural, the head of spring and spring eye form interference fit, the gap of spring eye and spring line part is less, because spring is crooked easily in movement process, particularly the air displacement of compressor increases, and when spring length increased, crooked spring contacted with spring eye and forms friction, cause spring breakage, compressor cisco unity malfunction when serious.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of friction that can effectively reduce spring and cylinder spring eye for the defective that overcomes above-mentioned prior art existence, avoid spring breakage, improve the rolling piston compressor of the band stepped shape spring eye of compresser cylinder functional reliability.
The purpose of this utility model can be achieved through the following technical solutions: a kind of rolling piston compressor with the stepped shape spring eye, comprise cylinder, piston, bent axle, blade, and two closed cavities forming by above-mentioned parts, these two closed cavities are respectively compression chamber and air aspiration cavity, it is characterized in that, be provided with spring eye in the described cylinder, this spring eye inboard is a terraced structure, the outside is straight shape or terraced structure, spring is arranged in the spring eye, and described spring is fixed by the outside of spring eye.
The described spring eye outside is straight shape, and described spring is fixing by the outside friction of spring eye.
The integrated stepped shape in the described spring eye outside, described spring is fixing by the outside friction of spring eye.
The integrated stepped shape in the described spring eye outside, described spring is by the step inner face pressure fixing in the spring eye outside.
The described spring eye outside is forced stepped shape, and described spring is pressed into fixing by the step in the spring eye outside.
Compared with prior art, the utility model has designed new cylinder spring eye structure, with the spring eye shape by the cylindrical terraced structure of changing into, thereby increased gap between leaf spring and the spring eye (δ → δ ' and δ ' δ), design has the following advantages like this:
(1) cylinder spring eye shape is by the cylindrical stepped shape that becomes, the diameter of spring eye increases, when spring bends in movement process, because the increase of spring eye diameter, the gap of leaf spring diameter and spring eye increases, but leaf spring free bend in spring eye is not subjected to the constraint of spring eye inside, avoided contacting of leaf spring and spring eye, and then avoided the generation of leaf spring because of the abrasion phenomenon of rupture.
(2) the cylinder spring eye is shaped as stepped shape, dwindle in aperture near intakeport inner side spring eye, minimum range between spring eye and the suction port can not reduce on the contrary and can increase, the intensity of this position has obtained increase, bearing better reliability under the identical difference force situation, the cylinder spring eye becomes after the stepped shaft, and the reliability of cylinder is improved.
(3) near the shape of hull outside partial cylinders spring eye can for straight shape or terraced structure.Structure for the straight shape in the spring eye outside, the external diameter of the enlarged head interference part of spring increases, tapering at the identical situation lower spring of line part increases, the stability that tapering increases rear spring increases thereupon, bending deflection in its movement process reduces, and has further reduced the possibility of spring and spring eye friction.
(4) be the structure of stepped shape for the spring eye outside, middle dolioform section diameter can further enlarge, if the fixedly dependence frictional force of spring and spring eye is fixed, spring is crooked at the volley more difficultly to be contacted with spring eye.If the fixedly contact pressure of spring and spring eye, avoided the assembly process medi-spring to be pressed into the generation of spring eye rear spring and spring eye decentraction phenomenon, and then avoided spring that the generation of buckling phenomenon at the volley of the bad spring that causes is installed, equally further reduced the possibility of spring and spring eye friction.
Description of drawings
Fig. 1 is the helical spring hole structure schematic representation of existing rolling piston compressor;
Fig. 2 is the utility model embodiment 1 a structural representation;
Fig. 3 is the utility model embodiment 2 a structural representation;
Fig. 4 is the utility model embodiment 3 a structural representation;
Fig. 5 is the utility model embodiment 4 a structural representation;
Fig. 6 is a cylinder schematic cross-section of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 2, a kind of rolling piston compressor with the stepped shape spring eye, this compressor is a positive displacement compressor, its composition comprises cylinder, piston, bent axle, two airtight closed cavities of blade composition, one of this closed cavity is a compression chamber, another is an air aspiration cavity, and above structure is the prior art part, and figure does not show; Present embodiment is improved to be characterised in that: be provided with spring eye 2 in the described cylinder 1, these spring eye 2 inboards are stepped shape 3, and the outside is straight shape 4, and spring 5 is arranged in the spring eye 2, and described spring 5 is fixing by the straight shape outside 4 frictions of spring eye.
As shown in Figure 3, a kind of rolling piston compressor with the stepped shape spring eye, this compressor is a positive displacement compressor, its composition comprises cylinder, piston, bent axle, two airtight closed cavities of blade composition, one of this closed cavity is a compression chamber, another is an air aspiration cavity, and above structure is the prior art part, and figure does not show; Present embodiment is improved to be characterised in that: be provided with spring eye 2 in the described cylinder 1, these spring eye 2 inboards are stepped shape 3, the integrated stepped shape 6 in the outside, spring 5 is arranged in the spring eye 2, and described spring 5 is fixing by the integrated stepped shape outside 6 frictions of spring eye.
As shown in Figure 4, a kind of rolling piston compressor with the stepped shape spring eye, this compressor is a positive displacement compressor, its composition comprises cylinder, piston, bent axle, two airtight closed cavities of blade composition, one of this closed cavity is a compression chamber, another is an air aspiration cavity, and above structure is the prior art part, and figure does not show; Present embodiment is improved to be characterised in that: be provided with spring eye 2 in the described cylinder 1, these spring eye 2 inboards are stepped shape 3, the integrated stepped shape 6 in the outside, and spring 5 is arranged in the spring eye 2, and described spring 5 is by step inner face 7 pressure fixings in the spring eye outside.
Embodiment 4
As shown in Figure 5, a kind of rolling piston compressor with the stepped shape spring eye, this compressor is a positive displacement compressor, its composition comprises cylinder, piston, bent axle, two airtight closed cavities of blade composition, one of this closed cavity is a compression chamber, another is an air aspiration cavity, and above structure is the prior art part, and figure does not show; Present embodiment is improved to be characterised in that: be provided with spring eye 2 in the described cylinder 1, these spring eye 2 inboards are stepped shape 3, and the outside is forced stepped shape 8, and spring 5 is arranged in the spring eye 2, and described spring 5 is pressed into fixing by the step 8 in the spring eye outside.
Fig. 6 is a cylinder schematic cross-section of the present utility model, as can be seen from the figure, after the inboard shape of cylinder spring eye changes stepped shape into, dwindle in aperture near intakeport inner side spring eye, minimum range between spring eye and the suction port increases, make the intensity of this position obtain increase, in the better reliability of bearing identical difference force situation lower cylinder.
Claims (5)
1. rolling piston compressor with the stepped shape spring eye, comprise cylinder, piston, bent axle, blade, and two closed cavities forming by above-mentioned parts, these two closed cavities are respectively compression chamber and air aspiration cavity, it is characterized in that, are provided with spring eye in the described cylinder, this spring eye inboard is a terraced structure, the outside is straight shape or terraced structure, and spring is arranged in the spring eye, and described spring is fixed by the outside of spring eye.
2. a kind of rolling piston compressor with the stepped shape spring eye according to claim 1 is characterized in that, the described spring eye outside is straight shape, and described spring is fixing by the outside friction of spring eye.
3. a kind of rolling piston compressor with the stepped shape spring eye according to claim 1 is characterized in that, the integrated stepped shape in the described spring eye outside, and described spring is fixing by the outside friction of spring eye.
4. a kind of rolling piston compressor with the stepped shape spring eye according to claim 1 is characterized in that, the integrated stepped shape in the described spring eye outside, and described spring is by the step inner face pressure fixing in the spring eye outside.
5. a kind of rolling piston compressor with the stepped shape spring eye according to claim 1 is characterized in that, the described spring eye outside is forced stepped shape, and described spring is pressed into fixing by the step in the spring eye outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200695260U CN201037461Y (en) | 2007-04-29 | 2007-04-29 | Rotary piston compressor with stage-shape spring hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200695260U CN201037461Y (en) | 2007-04-29 | 2007-04-29 | Rotary piston compressor with stage-shape spring hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201037461Y true CN201037461Y (en) | 2008-03-19 |
Family
ID=39209977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200695260U Expired - Lifetime CN201037461Y (en) | 2007-04-29 | 2007-04-29 | Rotary piston compressor with stage-shape spring hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201037461Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737325B (en) * | 2008-11-20 | 2011-12-14 | 日立空调·家用电器株式会社 | Rotary compressor |
-
2007
- 2007-04-29 CN CNU2007200695260U patent/CN201037461Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737325B (en) * | 2008-11-20 | 2011-12-14 | 日立空调·家用电器株式会社 | Rotary 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 |
Granted publication date: 20080319 |
|
| CX01 | Expiry of patent term |