CN208417231U - The crankshaft group and compressor of compressor - Google Patents
The crankshaft group and compressor of compressor Download PDFInfo
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- CN208417231U CN208417231U CN201820209951.3U CN201820209951U CN208417231U CN 208417231 U CN208417231 U CN 208417231U CN 201820209951 U CN201820209951 U CN 201820209951U CN 208417231 U CN208417231 U CN 208417231U
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- crankshaft
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- bearing
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Abstract
The utility model discloses a kind of crankshaft group of compressor and compressor, crankshaft group includes: crankshaft, and the crankshaft has eccentric part, and axial one end of the eccentric part is provided with crankshaft thrust face；Lower bearing, the upper surface of the lower bearing are bearing thrust face, the bearing thrust face and crankshaft thrust face mutually only supports and at least one is provided with metal-cermic coating TiC/Fe-Ni.The utility model is started with from coating, the selection metal-cermic coating TiC/Fe-Ni that wearability is good and coefficient of friction is small, under the premise of not changing component structural and material, improves the secondary polishing machine of push stopping part friction, so as to extend the compressor service life.
Description
Technical field
The utility model relates to the crankshaft group of Compressor Technology field more particularly to a kind of compressor and there is the song
The compressor of shaft assembly.
Background technique
Requirement with market to air-conditioning efficiency grade is continuously improved, and air-conditioning producer also proposed more the efficiency of compressor
High requirement.The advantages that rotary compressor is high, small in size with its compression efficiency, low noise, is answered extensively in field of air conditioning
With.However, the rotary compressor that existing air-conditioning system uses has biggish frictional dissipation, account for about the 8% of total system power consumption
Left and right, wherein the frictional dissipation between the push stopping part of crankshaft and the end face of flange of lower bearing accounts for the 3%- of whole frictional dissipations
6%.
The shaft shoulder thrust structure of especially existing rotary compressor, crankshaft by metal (upper limit, crankshaft, rotor and
The shafting structure weight of balance weight all relies on the countershaft thrust surface support of crankshaft, is hardly formed hydrodynamic lubrication oil film herein,
So crankshaft and the friction pair abrasion that lower bearing is formed are heavier, numerous large cylinders are high and twin-tub machine is easy to appear under durable operating condition
Thrust surface inordinate wear.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
A kind of crankshaft group of compressor out, the crankshaft group can make the wearability between crankshaft and lower bearing good, and abrasion loss is few,
Long service life.
The utility model further proposes a kind of compressor.
The crankshaft group of compressor according to the present utility model, comprising: crankshaft, the crankshaft has eccentric part, described inclined
Axial one end of center portion is provided with crankshaft thrust face；Lower bearing, the upper surface of the lower bearing are bearing thrust face, the bearing
Thrust surface and the crankshaft thrust face mutually only support and at least one is provided with metal-cermic coating TiC/Fe-Ni.
To sum up, in order to improve the wearability between crankshaft and lower bearing friction pair, and reduce the coefficient of friction at this, reach
To reducing into power, the purpose of improving performance, compressor industry engineer has done considerable research, from structure, material etc.
Trial was all done, but was had the shortcomings that respective.Therefore the utility model is started with from coating, selection wearability is good and coefficient of friction is small
Metal-cermic coating TiC/Fe-Ni improves the secondary abrasion of push stopping part friction under the premise of not changing component structural and material
Performance can extend the compressor service life.
In some examples of the utility model, the metal-cermic coating TiC/Fe-Ni includes: weight ratio 50-70%
Titanium-iron powder, the nickel powder of weight ratio 20-30% and the iron powder of 10-20%.
In some examples of the utility model, the titanium-iron powder uses Ti 43-47%, Al 1.0-2.0%；Mn
More than 1.5%-2.0%, Si 0.1-0.3%, C 0.15-0.25%, P < 0.01%, S < 0.03%, Cu 0.1-0.2%, Fe
The titanium-iron powder of amount, the nickel powder use purity > 99.5% and 2.5 μm of granularity < of nickel powder, and the iron powder uses purity > 99%
And 2.3 μm of granularity < of iron powder.
In some examples of the utility model, the metal-cermic coating TiC/Fe-Ni is plasma spray coating process system
The metal-cermic coating of work.
In some examples of the utility model, the thickness of the metal-cermic coating TiC/Fe-Ni is at 3 μm to 15 μm
In range.
In some examples of the utility model, the metal-cermic coating TiC/Fe-Ni is coated on the entire crankshaft
Thrust surface and/or the entire bearing thrust face.
In some examples of the utility model, the metal-cermic coating TiC/Fe-Ni is coated on the bearing thrust
It is in a part in face and annular in shape.
In some examples of the utility model, the crankshaft has the shaft shoulder, and the eccentric part is arranged with piston, the gold
The maximum radius Rmax for belonging to ceramic coating TiC/Fe-Ni meets following relationship: Rmax > R, Rmax < 0.5*D-e-2, R are institutes
The radius of the shaft shoulder is stated, D is the internal diameter of the piston, and e is the eccentricity of the eccentric part.
In some examples of the utility model, the inner ring surface of the lower bearing is provided with oil groove.
Compressor according to the present utility model, the crankshaft group including the compressor.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the cross-sectional view according to the compressor of the utility model embodiment；
Fig. 2 is the partial sectional view of crankshaft；
Fig. 3 is the cross-sectional view of lower bearing.
Appended drawing reference:
Compressor 100；
Crankshaft group 10；
Crankshaft 1；Eccentric part 11；Crankshaft thrust face 12；The shaft shoulder 13；
Lower bearing 2；Bearing thrust face 21；Oil groove 22；
Piston 3.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Crankshaft group 10 below with reference to Fig. 1-Fig. 3 detailed description according to the utility model embodiment, the crankshaft group 10
Applied in compressor 100, wherein compressor 100 can be rotary compressor 100.
As shown in Figure 1, may include: 1 He of crankshaft according to the crankshaft group 10 of the compressor 100 of the utility model embodiment
Lower bearing 2, certainly, crankshaft group 10 can also be correspondingly arranged on upper bearing (metal), and upper bearing (metal) and lower bearing 2 are respectively arranged at compressor
The two sides up and down of 100 cylinder, and in the axial direction, crankshaft 1 sequentially passes through upper bearing (metal) and lower bearing 2.
As depicted in figs. 1 and 2, crankshaft 1 has eccentric part 11, and axial one end of eccentric part 11 is provided with crankshaft thrust face
12, specifically, the shaft shoulder 13 has can be set in the lower axial end of eccentric part 11, and the lower end surface of the shaft shoulder 13 can be crankshaft thrust face
12, the upper surface of lower bearing 2 is bearing thrust face 21, and bearing thrust face 21 and crankshaft thrust face 12 mutually only support, and bearing
At least one of thrust surface 21 and crankshaft thrust face 12 are provided with metal-cermic coating TiC/Fe-Ni.That is, bearing stops
There are a variety of arrangement forms, for example, metal-cermic coating TiC/Fe-Ni is provided only on song between pushing surface 21 and crankshaft thrust face 12
Axis thrust surface 12, for another example, metal-cermic coating TiC/Fe-Ni are provided only on bearing thrust face 21, for another example, metal-cermic coating
TiC/Fe-Ni can be separately positioned on crankshaft thrust face 12 and bearing thrust face 21.Wherein, metal-cermic coating TiC/Fe-Ni
Raw material be titanium-iron powder, nickel powder and iron powder.
It is emphasized that for the wearability for improving crankshaft 1 and lower bearing 2 rubs between pair, and reduce at this
Coefficient of friction achievees the purpose that reduce into power, improving performance, and compressor industry engineer has done considerable research, from structure,
Material etc. all did trial, but had the shortcomings that respective.Therefore the utility model is started with from coating, is selected wearability good and is rubbed
The small metal-cermic coating TiC/Fe-Ni of coefficient is wiped, under the premise of not changing component structural and material, improves push stopping part and rubs
Secondary polishing machine is wiped, so as to extend 100 service life of compressor.
A specific embodiment according to the present utility model, metal-cermic coating TiC/Fe-Ni include: weight ratio 50-
70% titanium-iron powder, the nickel powder of weight ratio 20-30% and the iron powder of 10-20%.Using the cermet of above-mentioned weight ratio ratio
Coating TiC/Fe-Ni has found a reasonable balance range between wearability and small coefficient of friction, so that more preferably
Ground improves the secondary polishing machine of push stopping part friction, can extend 100 service life of compressor.
Further, titanium-iron powder uses Ti 43-47%, Al 1.0-2.0%；Mn 1.5%-2.0%, Si 0.1-
0.3%, C 0.15-0.25%, P < 0.01%, S < 0.03%, the titanium-iron powder of Cu 0.1-0.2%, Fe surplus, nickel powder use
Purity > 99.5% and 2.5 μm of granularity < of nickel powder, iron powder use purity > 99% and 2.3 μm of granularity < of iron powder.Pass through choosing
The titanium-iron powder, nickel powder and iron powder for taking suitable type, can make the wearability of metal-cermic coating TiC/Fe-Ni more preferable, friction
Coefficient is smaller.
Wherein, metal-cermic coating TiC/Fe-Ni can be the metal-cermic coating of plasma spray coating process production.Change speech
It, metal-cermic coating TiC/Fe-Ni is made of plasma spray coating process, for example, using METCO-7M type plasma spray
Automatic doubler surface glouer, heat source are oxyhydrogen flame, and protection gas is argon gas, and plasma flame flow temperature may be up to 16000 DEG C or more, and particle speed can
Reach 850m/s or more.Blasting treatment is carried out to matrix before spraying, clean matrix surface while increasing surface roughness, is improved
The combination of coating and matrix.That is, can be more using the metal-cermic coating TiC/Fe-Ni that plasma spray coating process makes
It is combined with corresponding crankshaft thrust face 12 or bearing thrust face 21 well, it can be improved in the reliability of thrust surface, it can also be with
Preferably reduce the abrasion loss between friction pair.
Optionally, the thickness of metal-cermic coating TiC/Fe-Ni is in the range of 3 μm to 15 μm.Pass through Rational choice gold
The thickness for belonging to ceramic coating TiC/Fe-Ni, can make metal-cermic coating TiC/Fe-Ni wearability good, and can extend
Its service life in thrust surface.And it can be to avoid metal-cermic coating TiC/Fe-Ni to the bearing thrust face 21 of lower bearing 2
The influence of surface smoothness.
An alternative embodiment according to the present utility model, metal-cermic coating TiC/Fe-Ni, which is coated on entire crankshaft, to be stopped
Pushing surface 12 and/or entire bearing thrust face 21.The flatness of thrust surface on the one hand can be improved using such mode, on the other hand
It can guarantee coating reliability of the metal-cermic coating TiC/Fe-Ni on thrust surface, can be conducive to reduce crankshaft 1 and lower axle
Hold the abrasion loss between 2.
Another alternative embodiment according to the present utility model, as shown in figure 3, metal-cermic coating TiC/Fe-Ni is coated
In in a part in bearing thrust face 21, and metal-cermic coating TiC/Fe-Ni is annular in shape.The cermet of such setting
Coating TiC/Fe-Ni can save raw material, and the effect played is identical, so as to reduce the cost of crankshaft group 10,
And the abrasion loss between crankshaft 1 and lower bearing 2 can be effectively reduced.
Further, as depicted in figs. 1 and 2, crankshaft 1 has the shaft shoulder 13, and eccentric part 11 is arranged with piston 3, cermet
The maximum radius Rmax of coating TiC/Fe-Ni meets following relationship: Rmax > R, Rmax < 0.5*D-e-2, R are the shaft shoulders 13
Radius, D are the internal diameters of piston 3, and e is the eccentricity of eccentric part 11.In this way, the coating zone of metal-cermic coating TiC/Fe-Ni
Area that can be inswept in the upper surface of lower bearing 2 for 12 rotary motion of crankshaft thrust face of the eccentric part 11 of crankshaft 1 downside, therefore
The maximum radius in bearing thrust face 21 need to be greater than 13 radius of the shaft shoulder of crankshaft 1, in order to meet the leakproofness of piston 3, bearing thrust
The maximum radius in face 21 also needs the maximum sealing radius less than piston 3.
Optionally, the inner ring surface of lower bearing 2 is provided with oil groove 22.Crankshaft 1 can be under the shell of compressor 100 as a result,
The upward oil suction in portion, to meet the lubrication between friction pair, it is ensured that the functional reliability of compressor 100 can extend pressure
The service life of contracting machine 100.
The specific embodiment of two metal-cermic coating TiC/Fe-Ni is given below.
The first embodiment, metal-cermic coating TiC/Fe-Ni are set to crankshaft thrust face 12, metal-cermic coating TiC/
The ingredient of Fe-Ni primary raw material are as follows:
Titanium-iron powder: Fe surplus, Ti 46%, Al 1.5%；Mn 1.7%, Si 0.2%, C 0.15%, P 0.007%, S
0.01%, Cu 0.15%；Nickel powder: 2.5 μm of purity > 99.5%, granularity <；Iron powder: 2.3 μm of purity > 99%, granularity <；Gold
The thickness of metal-cermic coating TiC/Fe-Ni is at 6 μm.
Second of embodiment, metal-cermic coating TiC/Fe-Ni are set to bearing thrust face 21, metal-cermic coating TiC/
The ingredient of Fe-Ni primary raw material are as follows: titanium-iron powder: Fe surplus, Ti 47%, Al 1.8%；Mn 2.0%, Si 0.3%, C
0.2%, P 0.005%, S 0.02%, Cu 0.1%；Nickel powder: 2.5 μm of purity > 99.5%, granularity <；Iron powder: purity >
2.3 μm of 99%, granularity <；The thickness of metal-cermic coating TiC/Fe-Ni is at 3 μm.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (8)
1. a kind of crankshaft group of compressor characterized by comprising
Crankshaft, the crankshaft have eccentric part, and axial one end of the eccentric part is provided with crankshaft thrust face；
The upper surface of lower bearing, the lower bearing is bearing thrust face, and the bearing thrust face and the crankshaft thrust face are mutual
It only supports and at least one is provided with metal-cermic coating TiC/Fe-Ni.
2. the crankshaft group of compressor according to claim 1, which is characterized in that the metal-cermic coating TiC/Fe-
Ni is the metal-cermic coating of plasma spray coating process production.
3. the crankshaft group of compressor according to claim 1, which is characterized in that the metal-cermic coating TiC/Fe-
The thickness of Ni is in the range of 3 μm to 15 μm.
4. the crankshaft group of compressor according to claim 1, which is characterized in that the metal-cermic coating TiC/Fe-
Ni is coated on the entire crankshaft thrust face and/or the entire bearing thrust face.
5. the crankshaft group of compressor according to claim 1, which is characterized in that the metal-cermic coating TiC/Fe-
Ni is coated in a part in the bearing thrust face and annular in shape.
6. the crankshaft group of compressor according to claim 5, which is characterized in that the crankshaft has the shaft shoulder, described inclined
Center portion is arranged with piston, and the maximum radius Rmax of the metal-cermic coating TiC/Fe-Ni meets following relationship: Rmax > R,
Rmax < 0.5*D-e-2, R are the radiuses of the shaft shoulder, and D is the internal diameter of the piston, and e is the eccentricity of the eccentric part.
7. the crankshaft group of compressor according to claim 1, which is characterized in that the inner ring surface of the lower bearing is provided with
Oil groove.
8. a kind of compressor, which is characterized in that the crankshaft group including compressor of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820209951.3U CN208417231U (en) | 2018-02-05 | 2018-02-05 | The crankshaft group and compressor of compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820209951.3U CN208417231U (en) | 2018-02-05 | 2018-02-05 | The crankshaft group and compressor of compressor |
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| Publication Number | Publication Date |
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| CN208417231U true CN208417231U (en) | 2019-01-22 |
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| CN201820209951.3U Active CN208417231U (en) | 2018-02-05 | 2018-02-05 | The crankshaft group and compressor of compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150519A (en) * | 2018-02-05 | 2018-06-12 | 广东美芝制冷设备有限公司 | The crankshaft group and compressor of compressor |
-
2018
- 2018-02-05 CN CN201820209951.3U patent/CN208417231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150519A (en) * | 2018-02-05 | 2018-06-12 | 广东美芝制冷设备有限公司 | The crankshaft group and compressor of compressor |
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