CN104963861A - Compressing mechanism for rotary compressor and rotary compressor with compressing mechanism - Google Patents
Compressing mechanism for rotary compressor and rotary compressor with compressing mechanism Download PDFInfo
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- CN104963861A CN104963861A CN201510390437.5A CN201510390437A CN104963861A CN 104963861 A CN104963861 A CN 104963861A CN 201510390437 A CN201510390437 A CN 201510390437A CN 104963861 A CN104963861 A CN 104963861A
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- rotary compressor
- compressing mechanism
- cylinder
- tap hole
- main bearing
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Abstract
The invention discloses a compressing mechanism for a rotary compressor and the rotary compressor with the compressing mechanism. The compressing mechanism comprises an air cylinder component, a main bearing and a supplementary bearing, wherein a discharging cutting opening communicated with a working chamber is formed in an air cylinder in the air cylinder component; a discharging hole communicated with the discharging cutting opening is formed in at least one of the main bearing and the supplementary bearing; the projection areas of the discharging cutting opening and the discharging hole on a reference plane are S1 and S2 respectively; the largest distance between the edge of the discharging cutting opening and the inner wall surface of the air cylinder is L; the projection area of the discharging hole outside the working chamber is A; S1, S2 and A satisfy the conditions that S1/S2 is less than or equal to 0.15, L is less than or equal to 2mm, and (S2-A)/S2 is more than or equal to 63 percent and less than or equal to 85 percent. According to the compressing mechanism for the rotary compressor provided by the invention, while enough discharging area of a refrigerant is guaranteed to reduce the exhaust resistance, re-inflation loss of the compressing mechanism can be effectively reduced, and further the performance of the rotary compressor can be improved.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of compressing mechanism for rotary compressor and there is its rotary compressor.
Background technique
In correlation technique, because the high-pressure refrigerant after compressing when tap hole is communicated with the inner diameter volume of piston exists leakage problem, the refrigerating capacity of compressor is caused to reduce, efficiency reduces, therefore by tap hole outside cylinder radius direction, it is made not to be communicated with the inner diameter volume of piston, but a part of area of tap hole can be caused to be placed in the outside of active chamber, the half that this part area almost accounts for tap hole area is even more, therefore, on cylinder, be provided with the discharge otch guiding refrigeration agent to discharge in conventional art.And to discharge the volume that otch produces be Iinvalid volume, and the refrigerating capacity of compressor is caused to decline due to the reflation of high-pressure refrigerant and power consumption increases.
Some correlation techniques adopt and increase the discharge resistance that the method for discharging aperture reduces refrigeration agent, thus raising efficiency, but the Iinvalid volume that the discharge otch while tap hole increases on tap hole and cylinder produces increases thereupon, thus the power consumption penalty making the reflation of high-pressure refrigerant cause increases, therefore the method usually can not reach the object promoting compressor efficiency.
In other correlation techniques, make tap hole complete face to active chamber, but the easy like this tap hole that causes is communicated with piston inner diameter space, produces and leak, and the small space that the inwall of tap hole and active chamber and slide plate edge are formed can not be avoided, and causes the increase that the reflation of overcompression is lost.Therefore the method can not reach the object improving rotary compressor efficiency.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of compressing mechanism for rotary compressor, and the structure of this compressing mechanism is simple, compression efficiency is high.
Another object of the present invention is to propose a kind of rotary compressor with compression mechanism.
The compressing mechanism for rotary compressor of embodiment, comprising: cylinder assembly according to a first aspect of the present invention, and described cylinder assembly comprises cylinder, and described cylinder has active chamber, described cylinder is formed with the discharge otch be communicated with described active chamber; Main bearing and supplementary bearing, described main bearing and described supplementary bearing are located at the axial two ends of described cylinder assembly respectively, described main bearing with at least one in described supplementary bearing is formed with the tap hole be communicated with described discharge otch, wherein, the area of contour of described discharge otch on reference level is S
1, the area of contour of described tap hole on described reference level is S
2ultimate range between the edge of described discharge otch and the internal face of described cylinder chamber is L, the area of the intersection of the projection of described tap hole on described reference level and the projection of described cylinder on described reference level is A, described reference level is the plane of the axis perpendicular to described cylinder, wherein said S
1, S
2, L, A meet:
S
1/S
2≤0.15，L≤2mm，63％≤(S
2－A)/S
2≤85％。
According to the compressing mechanism for rotary compressor of the embodiment of the present invention, by making the area of contour S of discharge otch on reference level (reference level is the plane of the axis perpendicular to cylinder) be provided with
1, the area A of intersection of discharging the projection on reference level of ultimate range L between the edge of otch and the internal face of cylinder, tap hole and the projection of cylinder on reference level meets: S
1/ S
2≤ 0.15, L≤2mm, 63%≤(S
2-A)/S
2≤ 85% (S
2for the area of contour of tap hole on described reference level).Can ensure that refrigeration agent has enough discharge areas with while reducing exhaust resistance thus, effectively can reduce the reflation loss of compressing mechanism, thus the compression efficiency of compressing mechanism can be improved, and then the performance of rotary compressor can be improved.
According to some embodiments of the present invention, the volume of described active chamber is V, described V, S
2meet: 210mm≤V/S
2≤ 350mm.
According to some embodiments of the present invention, described tap hole is formed on described main bearing or described supplementary bearing.
According to some embodiments of the present invention, described tap hole is formed on described main bearing and described supplementary bearing.
According to some embodiments of the present invention, described tap hole is circular port, slotted eye, long-round-shape hole or polygonal hole.
According to some embodiments of the present invention, described cylinder assembly comprises multiple cylinder, is provided with dividing plate between adjacent two described cylinders.
The rotary compressor of embodiment according to a second aspect of the present invention, comprise housing and the compressing mechanism for rotary compressor according to the above-mentioned first aspect of the present invention, wherein said compressing mechanism is located in described housing.
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 schematic diagram of the compressing mechanism for rotary compressor according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the compressing mechanism for rotary compressor according to the embodiment of the present invention;
Fig. 3 is the sectional drawing along A-A line in Fig. 2, and wherein tap hole is formed on main bearing;
Fig. 4 is the sectional drawing along A-A line in Fig. 2, and wherein tap hole is respectively formed on main bearing and supplementary bearing;
Fig. 5 is the V/S of the rotary compressor according to the embodiment of the present invention
2with the relation schematic diagram of COP (Coefficient ofPerformance, Energy Efficiency Ratio).
Reference character:
Compressing mechanism 100,
Cylinder 1, inlet hole 2, active chamber 3, main bearing 4, supplementary bearing 5, discharges otch 6, tap hole 7, piston 8, slide plate 9, vane slot 10, bent axle 11.
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 " length ", " on ", D score, " level ", " interior ", " outward ", " axis ", " radial direction ", the orientation of the instruction such as " circumference " or position relationship be 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 can not be interpreted as limitation of the present invention.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, except as otherwise noted, the implication of " multiple " is two or more.
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 mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.
In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
The compressing mechanism 100 for rotary compressor according to the embodiment of the present invention is described in detail below with reference to Fig. 1-Fig. 5.Wherein, compressing mechanism 100 may be used in rotary compressor.This rotary compressor can also comprise motor (scheming not shown), and motor carries out work for driving compressing mechanism 100.
As Figure 1-Figure 5, the compressing mechanism 100 for rotary compressor of embodiment, comprises cylinder assembly, main bearing 4 and supplementary bearing 5 according to a first aspect of the present invention.Wherein, cylinder assembly comprises cylinder 1, cylinder 1 has active chamber 3, cylinder 1 is formed with the discharge otch 6 (as shown in Figure 3 and Figure 4) be communicated with active chamber 3, discharge otch 6 to discharge for the refrigeration agent in the active chamber 3 of guide cylinder 1, discharging otch 6 can also increase the discharge area of refrigeration agent to reduce the discharge resistance of refrigeration agent further.Be understandable that, cylinder 1 can also be provided with inlet hole 2, for by the active chamber 3 of gaseous refrigerant inspiration cylinder 1.
Main bearing 4 and supplementary bearing 5 are located at the axial two ends of cylinder assembly (such as respectively, the two ends up and down of cylinder 1 as shown in Figure 3 and Figure 4), main bearing 4 with at least one in supplementary bearing 5 is formed and discharges the tap hole 7 that is communicated with of otch 6, tap hole 7 is for the active chamber 3 by the high-pressure refrigerant discharge cylinder 1 formed through compression in active chamber 3.The discharge otch 6 that cylinder 1 is formed both was communicated with active chamber 3, was also communicated with tap hole 7, and it can discharge from tap hole 7 by discharging the guiding of otch 6 by the refrigeration agent thus in active chamber 3.Alternatively, tap hole 7 can be circular port, slotted eye, long-round-shape hole or polygonal hole etc.
Be understandable that, cylinder assembly can comprise a cylinder 1, also can comprise multiple cylinder 1 (scheming not shown).When cylinder assembly comprises multiple cylinder 1, be provided with dividing plate (scheming not shown) between two adjacent cylinders 1 to be separated by adjacent cylinder 1.In description below the application, take rotary compressor as single cylinder compressor for example is described.
In the example shown in Fig. 1-Fig. 4, the cylinder assembly in compressing mechanism 100 comprises a cylinder 1.Compressing mechanism 100 also comprises piston 8, slide plate 9 and bent axle 11.Specifically, main bearing 4 is located at the upper end of cylinder 1, and supplementary bearing 5 is located at the lower end of cylinder 1, main bearing 4, limits above-mentioned active chamber 3 between cylinder 1 and supplementary bearing 5.Piston 8 can roll along the inwall of active chamber 3, cylinder 1 is formed with the radial vane slot 10 extended, slide plate 9 is located in vane slot 10 movably, and the periphery wall of the inner of slide plate 9 and piston 8 only supports, and the outer end of slide plate 9 can be connected with spring (scheming not shown).Main bearing 4, cylinder 1 and supplementary bearing 5 are run through in the lower end of bent axle 11, bent axle 11 has eccentric part (scheming not shown), eccentric part is positioned at active chamber 3, and the upper end of bent axle 11 is suitable for being connected with motor (scheming not shown), and driven by motor bent axle 11 rotates.
When machine operation, bent axle 11 rotates along with the rotation of motor, the bent axle 11 rotated drives and is set in the piston 8 on the eccentric part of bent axle 11 and rolls along the inwall of active chamber 3, gaseous refrigerant enters in the active chamber 3 of cylinder 1 via inlet hole 2 on cylinder 1, the piston 8 pairs of refrigeration agents rolled along the inwall of active chamber 3 compress, refrigeration agent is after compression formed as high-pressure refrigerant, and high-pressure refrigerant can be discharged from tap hole 7 by the guiding of discharging otch 6.
Wherein, as shown in Figure 1-Figure 3, discharging the area of contour of otch 6 on reference level is S
1, the area of contour of tap hole 7 on reference level is S
2, the ultimate range of discharging between the edge of otch 6 and the internal face of cylinder 1 is L, and the area of the intersection of the projection of tap hole 7 on reference level and the projection of cylinder 1 on reference level is A, and reference level is the plane of the axis perpendicular to cylinder 1, wherein S
1, S
2, L, A meet:
S
1/S
2≤0.15，L≤2mm，63％≤(S
2－A)/S
2≤85％。
In above-mentioned relation, relation S
1/ S
2≤ 0.15 and L≤2mm be limited to discharging the relative size of otch 6 in less scope.Be understandable that, the relative size of discharging otch 6 is limited in less scope, can ensure that refrigeration agent has enough discharge areas with while reducing exhaust resistance, also the Iinvalid volume produced by discharge otch 6 can just be reduced, refrigeration agent can be reduced thus and remain in high-pressure refrigerant in Iinvalid volume when discharging, thus the reflation volume of high-pressure refrigerant in active chamber 3 can be reduced, the gettering quantity in active chamber 3 can be increased thus, thus the power consumption penalty that the reflation that can effectively reduce high-pressure refrigerant is brought.
As shown in Figure 3, relation L≤2mm can also limit the ultimate range between edge and the internal face of cylinder 1 of discharging otch 6 further, namely discharge otch 6 length in the horizontal direction shown in Fig. 3, can reduce thus because of above-mentioned L value larger time may cause discharging otch 6 and be communicated with the internal diameter of piston 8 and the leakage of high-pressure refrigerant that causes, similarly, thus the power consumption penalty that causes in the reflation of active chamber 3 of the high-pressure refrigerant that also can reduce leakage.
In brief, as above-mentioned S
1, S
2, L, A be when meeting above-mentioned relation, can ensure that refrigeration agent has enough discharge areas with while reducing exhaust resistance thus, the leakage of Iinvalid volume and high-pressure refrigerant can be reduced, thus the power consumption penalty that the reflation that can effectively reduce high-pressure refrigerant is brought, thus the compression efficiency of compressing mechanism 100 can be improved, and then the performance of rotary compressor can be improved.
According to the compressing mechanism 100 for rotary compressor of the embodiment of the present invention, by making the area of contour S of discharge otch 6 on reference level (reference level is the plane of the axis perpendicular to cylinder 1) be provided with
1, the area A of intersection of discharging the projection on reference level of ultimate range L between the edge of otch 6 and the internal face of cylinder 1, tap hole 7 and the projection of cylinder 1 on reference level meets: S
1/ S
2≤ 0.15, L≤2mm, 63%≤(S
2-A)/S
2≤ 85% (S
2for the area of contour of tap hole 7 on described reference level).Can ensure that refrigeration agent has enough discharge areas with while reducing exhaust resistance thus, effectively can reduce the reflation loss of compressing mechanism 100, thus the compression efficiency of compressing mechanism 100 can be improved, and then the performance of rotary compressor can be improved.
According to some embodiments of the present invention, (be positioned at the solid line a representative of top according to the V/S of the rotary compressor of the embodiment of the present invention as shown in Figure 5
2with the relation curve of COP, the dotted line b being arranged in below represents the V/S of the rotary compressor of conventional art
2with the relation curve of COP), as can be seen from Figure 5, higher according to the COP value of the rotary compressor of the embodiment of the present invention, i.e. the better performances of this rotary compressor.The volume of the active chamber 3 of cylinder 1 is V, V, S
2meet: 210mm≤V/S
2≤ 350mm (optimum range as shown in Figure 5), can be limited in tap hole 7 in certain scope relative to the size of active chamber 3 thus, be understandable that, tap hole 7 is also the part belonging to Iinvalid volume.Both can ensure that refrigeration agent had enough discharge areas to reduce exhaust resistance thus, can be limited in less scope by nullified volume again, thus the power consumption penalty that the reflation that effectively can reduce the high-pressure refrigerant remained in Iinvalid volume is brought, thus the compression efficiency of compressing mechanism 100 can be improved, and then the performance of rotary compressor can be improved.
According to some embodiments of the present invention, as shown in Figure 3, tap hole 7 is formed on main bearing 4 or supplementary bearing 5, and that is, tap hole 7 can only be formed on main bearing 4, and tap hole 7 also can only be formed on supplementary bearing 5.In the example depicted in fig. 3, tap hole 7 be formed in be positioned at cylinder 1 upper end main bearing 4 on, the guiding of the discharge otch 6 that can be communicated with by tap hole 7 therewith through the refrigeration agent of overcompression in active chamber 3 thus and discharging from the tap hole 7 main bearing 4.
According to other embodiments of the present invention, as shown in Figure 4, tap hole 7 is formed on main bearing 4 and supplementary bearing 5.In the example depicted in fig. 4, tap hole 7 is formed in the main bearing 4 that is positioned at cylinder 1 upper end and is positioned on the supplementary bearing 5 of cylinder 1 lower end, and be formed with discharge otch 6 respectively at the upper and lower end of cylinder 1, and these two all its corresponding tap holes 7 of discharge otch 6 are communicated with, can discharge by the tap hole 7 by the guiding of the discharge otch 6 at cylinder about 1 two ends from main bearing 4 and on supplementary bearing 5 through the refrigeration agent of overcompression in active chamber 3 thus, thus the discharge area of refrigeration agent can be increased, the discharge resistance of refrigeration agent can be reduced further.
The rotary compressor of embodiment according to a second aspect of the present invention, comprise housing (scheming not shown) and the compressing mechanism 100 for rotary compressor according to the above-mentioned first aspect of the present invention, this compressing mechanism 100 and above-mentioned motor are all located in housing.
According to the rotary compressor of the embodiment of the present invention, by being provided with above-mentioned compressing mechanism 100, can ensure that refrigeration agent has enough discharge areas with while reducing exhaust resistance, effectively can reduce the reflation loss of rotary compressor, thus the performance of rotary compressor can be improved.
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 (7)
1. for a compressing mechanism for rotary compressor, it is characterized in that, comprising:
Cylinder assembly, described cylinder assembly comprises cylinder, and described cylinder has active chamber, described cylinder is formed with the discharge otch be communicated with described active chamber;
Main bearing and supplementary bearing, described main bearing and described supplementary bearing are located at the axial two ends of described cylinder assembly respectively, described main bearing with at least one in described supplementary bearing is formed with the tap hole be communicated with described discharge otch,
Wherein, the area of contour of described discharge otch on reference level is S
1, the area of contour of described tap hole on described reference level is S
2ultimate range between the edge of described discharge otch and the internal face of described cylinder chamber is L, the area of the intersection of the projection of described tap hole on reference level and the projection of described cylinder on described reference level is A, described reference level is the plane of the axis perpendicular to described cylinder, wherein said S
1, S
2, L, A meet:
S
1/S
2≤0.15，L≤2mm，63％≤(S
2－A)/S
2≤85％。
2. the compressing mechanism for rotary compressor according to claim 1, is characterized in that, the volume of described active chamber is V, described V, S
2meet: 210mm≤V/S
2≤ 350mm.
3. the compressing mechanism for rotary compressor according to claim 1, is characterized in that, described tap hole is formed on described main bearing or described supplementary bearing.
4. the compressing mechanism for rotary compressor according to claim 1, is characterized in that, described tap hole is formed on described main bearing and described supplementary bearing.
5. the compressing mechanism for rotary compressor according to claim 1, is characterized in that, described tap hole is circular port, slotted eye, long-round-shape hole or polygonal hole.
6. the compressing mechanism for rotary compressor according to claim 1, is characterized in that, described cylinder assembly comprises multiple cylinder, is provided with dividing plate between adjacent two described cylinders.
7. a rotary compressor, is characterized in that, comprising:
Housing; With
The compressing mechanism for rotary compressor according to any one of claim 1-6, wherein said compressing mechanism is located in described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510390437.5A CN104963861B (en) | 2015-07-02 | 2015-07-02 | For the compression mechanism of rotary compressor and the rotary compressor with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510390437.5A CN104963861B (en) | 2015-07-02 | 2015-07-02 | For the compression mechanism of rotary compressor and the rotary compressor with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963861A true CN104963861A (en) | 2015-10-07 |
| CN104963861B CN104963861B (en) | 2017-10-17 |
Family
ID=54217916
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510390437.5A Active CN104963861B (en) | 2015-07-02 | 2015-07-02 | For the compression mechanism of rotary compressor and the rotary compressor with it |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120275A (en) * | 2017-06-29 | 2017-09-01 | 广东美芝制冷设备有限公司 | Compression mechanism and rotary compressor |
| CN107387420A (en) * | 2017-08-28 | 2017-11-24 | 广东美芝制冷设备有限公司 | The compression mechanism and rotary compressor of rotary compressor |
| CN109185140A (en) * | 2018-10-15 | 2019-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of pump assembly and rolling rotor compressor |
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|---|---|
| CN104963861B (en) | 2017-10-17 |
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