CN102269149A - Piston refrigerant compressor - Google Patents
Piston refrigerant compressor Download PDFInfo
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- CN102269149A CN102269149A CN2011102378872A CN201110237887A CN102269149A CN 102269149 A CN102269149 A CN 102269149A CN 2011102378872 A CN2011102378872 A CN 2011102378872A CN 201110237887 A CN201110237887 A CN 201110237887A CN 102269149 A CN102269149 A CN 102269149A
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- piston
- compressor
- cylinder block
- wear
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Abstract
The invention discloses a piston refrigerant compressor which comprises a crankshaft (1), a connecting rod (2), a piston (4) and an air cylinder seat (5); the inner wall of an air cylinder hole of the air cylinder seat (5), the piston (4) and the surface which is matched with the air cylinder hole of the air cylinder seat (5) are provided with abrasion-resistant spray coatings (6) which are made from abrasion-resistant high-temperature-resistant materials; and the material of the body of the air cylinder seat (5) and the material of the piston (4) are aluminum alloy. According to the technical scheme, by adopting novel structures of the aluminum air cylinder seat and the aluminum piston and the like on which Teflon materials are sprayed, the gas transmission coefficient can be improved, the friction can be reduced, and the refrigerating output and COP (coefficient of performance) can be improved; the weight of the compressor is reduced obviously; and the noise and vibration of the compressor are reduced, energy sources and raw materials are saved, and noise is reduced.
Description
Technical field
The invention belongs to the technical field of refrigeration compressor, specifically, the present invention relates to a kind of Piston Refrigerant Compreessor.
Background technique
At present, the technology that generally adopts in the freezer compressor industry is: compressor is by the motor rotating band dynamic pressure machine crankshaft rotation of contracting, crankshaft eccentric rotatablely moves and is converted into moving back and forth of connecting rod small end, and connecting rod drives piston, and piston is reciprocating in cylinder block cylinder hole.
To shown in Figure 5, is the schematic representation of the refrigeration compressor of prior art as Fig. 1.Wherein, Fig. 1 is the profile schematic representation; Fig. 2 is the sectional view of compresser cylinder seat 5; Fig. 3, Fig. 4 are the schematic representation of traditional piston 4, and Fig. 5 is a cylinder block 5 and the erection drawing of piston 4, connecting rod 2, bent axle 1 etc.
Because the friction of piston and cylinder block is serious in the prior art, makes contact surface impaired under high temperature condition easily, influences sealability and quality of fit.For avoiding contact surface impaired, the measure of taking can only be to increase matching gap, still, consequently sealability is brought adverse effect in the prior art.
In the prior art, the material of cylinder block 5 makes cylinder iron, and what piston 4 adopted is iron-based powder metallurgy or ironcasting, and piston 4 all adopts irony with cylinder block 5, and the density of iron is big, and quality is big.And cylinder block, piston all belong to the compressor major part, and quality is big, increase compressor complete machine weight;
Simultaneously, because iron intensity height, hardness is big, for reaching part processing precision, equipment and processing technology is proposed requirements at the higher level;
Particularly serious is: the irony piston mass is big, and reciprocal inertia force is big, causes hull vibration by the unbalanced force excitation, causes compressor noise to increase.In the reciprocating-piston type refrigerating compressor based on irony, all rotating inertia forces can complete equilibrium fall, and the single order reciprocal inertia force can only balance 1/3～1/2.
Summary of the invention
The problem that the present invention solves provides a kind of Piston Refrigerant Compreessor, its objective is the friction that alleviates compressor weight, reduces piston and cylinder block, the Energy Efficiency Ratio that reduces vibration, raising compressor.
To achieve these goals, the technological scheme taked of the present invention is:
Piston Refrigerant Compreessor provided by the present invention comprises bent axle, connecting rod, piston and cylinder block, is provided with on the cylinder-bore inwall of described cylinder block by the wear-resisting sprayfused coating wear-resisting, that exotic material is made;
Perhaps on the surface that cooperates with the cylinder-bore of described cylinder block on the described piston, be provided with by the wear-resisting sprayfused coating wear-resisting, that exotic material is made;
Perhaps on the cylinder-bore inwall of described cylinder block, on the surface that cooperates with the cylinder-bore of described cylinder block on the described piston, be equipped with by the wear-resisting sprayfused coating wear-resisting, that exotic material is made.
The material of described wear-resisting sprayfused coating is a teflon.
The thickness of described wear-resisting sprayfused coating is 0.001～0.010mm.
The axial length of the sealed end of described piston is 10 ± 0.15mm.
The bulk material of described cylinder block is an aluminum alloy.Perhaps the bulk material of described cylinder block is other lightweight metal material.
The material of described piston is an aluminum alloy.Perhaps the material of described piston is other lightweight metal material.
The present invention adopts technique scheme, sprays high temperature resistance, splendid teflon (Teflon) material of wear-resisting property on cylinder block, and the reciprocating friction power of piston and cylinder-bore, compressor mechanical friction noise further reduce; Because antiwear property improves, friction factor reduces, and can further reduce the matching gap of aluminum piston and cylinder-bore; When matching gap reduced, about the axial length increase 4mm with the piston seal end, the leakage of compressor further reduced, greatly improve compressor gas transmission coefficient, improve compressor refrigerating capacity, frictional behaviour is improved, reduced compressor power input, complete machine COP is obviously promoted; Cylinder block and piston change aluminum material into, 2.8 times of weight savings, and cylinder block processibility and machining accuracy obviously improve; The uneven excitation force of piston also reduces 2.8 times, reduces the excitation noise of excitation force to housing and housing seal inner chamber refrigeration agent greatly; Because of uneven excitation force reduces to reduce with frictional noise, the noise and vibration of compressor is obviously descended, really accomplish energy saving and raw material, reduction noise.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:
Fig. 1 is a cast iron cylinder block form structure schematic representation of the prior art;
Fig. 2 is the B-B cross-sectional schematic of structure shown in Figure 1;
Fig. 3 is the piston structure schematic representation of powder metallurgy irony of the prior art;
Fig. 4 is the A-A cross-sectional schematic of structure shown in Figure 3;
Fig. 5 is a cast iron cylinder block reciprocating compressor structural representation of the prior art;
Fig. 6 is the structural representation of the aluminium matter cylinder block that is coated with the Teflon material among the present invention;
Fig. 7 is the C-C cross-sectional schematic among Fig. 6;
Fig. 8 is the structural representation of the aluminum piston among the present invention;
Fig. 9 is the A-A cross-sectional schematic among Fig. 8;
Figure 10 is the aluminium matter cylinder block of Teflon material and the compressor arrangement schematic representation of aluminum piston of having applied of the present invention.
Be labeled as among the figure:
1, bent axle, 2, connecting rod, 3, wrist pin, 4, piston, 5, cylinder block, 6, wear-resisting sprayfused coating.
Embodiment
Contrast accompanying drawing below, the description by to embodiment is described in further detail the specific embodiment of the present invention, to help those skilled in the art inventive concept of the present invention, technological scheme is had more complete, accurate and deep understanding.
As Fig. 6, Fig. 7 and the expressed structure of the present invention of Figure 10, be a kind of refrigeration compressor in the form of piston, comprise bent axle 1, connecting rod 2, wrist pin 3, piston 4 and cylinder block 5.
In order to overcome the defective that prior art exists, realize friction, the reduction vibration that alleviates compressor weight, reduces piston and cylinder block, the goal of the invention that improves the Energy Efficiency Ratio of compressor, the technological scheme that the present invention takes is:
As Fig. 7 and shown in Figure 10, Piston Refrigerant Compreessor provided by the present invention is provided with on the cylinder-bore inwall of described cylinder block 5 by the wear-resisting sprayfused coating 6 wear-resisting, that exotic material is made;
Perhaps on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4, be provided with by the wear-resisting sprayfused coating 6 wear-resisting, that exotic material is made;
Perhaps on the cylinder-bore inwall of described cylinder block 5, on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4, be equipped with by the wear-resisting sprayfused coating 6 wear-resisting, that exotic material is made.
The material of described wear-resisting sprayfused coating 6 is a teflon.
In order to reduce surface friction drag and to improve the gas transmission coefficient, on the inwall of the cylinder-bore of aluminum cylinder block 5, perhaps on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4, spray a kind of high temperature resistance, the splendid teflon of wear-resisting property is filmed---the Teflon high-abrasive material, perhaps all spray described high temperature resistance on the cylinder-bore inwall of described cylinder block 5, on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4, the splendid teflon of wear-resisting property is filmed---the Teflon high-abrasive material.
Simultaneously can cylinder block, piston face be coated needed spray wear resistant coating thickness in conjunction with concrete technological requirement.
Under high capacity, the Teflon material has good wear-resisting property, when the Teflon high-abrasive material contacts with most materials simultaneously very low friction factor is arranged all, and its outstanding sliding capability is approved widely; On the other hand, the spraying Teflon film has extremely strong high temperature resistant and fire performance, this is that the operating temperature of teflon coatings is the highest can to reach 300 ℃ because the Teflon material has very high fusing point and self-ignition point, the operating temperature of discontinuity even can reach 320 ℃.Can use continuously between 250 ℃～280 ℃, its significant thermostability is adapted to compressor fully and works under various back pressures.Piston 4 further reduces with the reciprocating friction power of cylinder-bore, and the mechanical friction noise of compressor also further reduces.Because antiwear property improves and friction factor diminishes, and can further reduce the matching gap of aluminum piston and cylinder-bore.
Specifically, in the scope of coating processes, the optimal values of the thickness of described wear-resisting sprayfused coating 6 is 0.001～0.010mm.
(in conjunction with Fig. 3) as shown in Figure 8, the axial length of the sealed end of piston 4 of the present invention are 10 ± 0.15mm.
In the prior art, the length of piston seal end is about 6mm.When matching gap reduces, can adjust piston seal end length, piston seal end length is increased about 4mm, the leakage of compressor further reduces, and greatly improves compressor gas transmission coefficient.
As shown in Figure 7, the bulk material of cylinder block 5 of the present invention is an aluminum alloy.As shown in Figure 9, the material of piston 4 of the present invention is an aluminum alloy.
The present invention produces noise and vibration in order to reduce uneven excitation force to the stimulation of housing, change cylinder block 5 into aluminum material after, 2.8 times of weight savings, the processibility and the machining accuracy of cylinder block 5 obviously improve; Simultaneously, because piston 4 also changes aluminum material into, uneven excitation force also reduces 2.8 times, reduces the excitation noise of excitation force to housing and housing seal inner chamber refrigeration agent greatly,
Adopt aluminum material cylinder block 5 and piston 4, and add the spraying teflon coatings, alleviated compressor weight, because of the gas transmission coefficient increases, improve compressor refrigerating capacity, improve because of frictional behaviour and reduced compressor power input, complete machine Energy Efficiency Ratio (COP) is obviously promoted; Because of uneven excitation force reduces to reduce with frictional noise, the noise and vibration of compressor is obviously descended.Change cylinder of compressor seat 5 into aluminium matter, because the processibility of aluminium is better than iron, the machining accuracy of cylinder block 5 improves, and satisfies processing request easily, and reject rate is significantly descended, thereby cost reduces.
The bulk material of cylinder block of the present invention also can be other lightweight metal material.Equally, the material of piston of the present invention also can be other lightweight metal material.
The present invention compared with prior art has following advantage:
Compressor complete machine weight reduces, obviously economical with materials;
Can improve the gas transmission coefficient of compressor, under the situation of unit volume that does not improve compressor and motor revolution, improve compressor refrigerating capacity greatly and reduce input power, reach and significantly improve compressor COP value purpose;
The uneven to-and-fro motion power that compressor is in operation and produces be can reduce effectively, compressor noise, vibration reduced.
Be concrete analysis below to structure of the present invention and manufacturing process:
Related process of the present invention is:
After cylinder block 5 honings,, on the inwall of the cylinder hole of cylinder block 5, spray the wear-resisting sprayfused coating 6 of the Teflon material of 1～10 micron of a kind of thickness by a kind of special process.
After the compressor energising, 1 rotation of driven by motor bent axle, bent axle 1 minor axis connects connecting rod 2, and connecting rod 2 drives pistons 4 and moves back and forth in cylinder block 5, realizes air-breathing, compression, exhaust, the expansion of compressor.
As follows to principle analysis of the present invention:
Because wear resistance and extremely low friction factor that special fluorine coating cylinder-bore is high, cylinder-bore and piston matching gap are further dwindled, add the increase of piston seal end length, compressor based on pressure lubrication arrives cylinder-bore and piston matching gap by centrifugal lubrication with oil pump, realize the sealing of piston and cylinder hole refrigerator oil, sealability improves.
Described gas transmission coefficient is:
λ＝λ
vλ
pλ
Tλ
1
Wherein, λ
v, λ
p, λ
T, λ
1Be respectively the coefficient relevant with volume, pressure, temperature and leakage.
The compressor leakage coefficient lambda
1Increase, the gas transmission coefficient lambda increases, compressor refrigerating capacity Q
0Increase; Simultaneously, because wear resistance increases, friction factor diminishes, and frictional work Pm reduces, and input power Pe reduces, compressor COP=refrigerating capacity/input power, so COP increases.
In addition, the quality of the piston 4 of aluminium matter alleviates 2.8 times, and reciprocal inertia force reduces greatly.In the reciprocating-piston type refrigerating compressor based on irony, all rotating inertia forces can complete equilibrium fall, and the monovalence reciprocal inertia force can only balance 1/3～1/2; And be the piston of matrix with aluminium matter, except whole rotating inertia forces can balance, reciprocal inertia force is for former irony piston, because reciprocation mass m
pSignificantly reduce the reciprocation mass m that connecting rod small end transforms
C1Only account for the connecting rod quality sub-fraction, so reciprocation mass m
jReduce (m greatly
j=m
p+ m
C1), uneven reciprocal inertia force F
jReduce greatly, the monovalence reciprocal inertia force can balance more than 1/2, and the balancing patch quality and the radius that need carry out counterweight on bent axle also reduce, and have saved materials consumption; Reduce the vibration that unbalanced force produces; And the root that noise produces is the vibration of housing, and makes the vibrative a big chunk of housing come from unbalanced excitation force.Uneven excitation force vibration source reduces, and noise reduces, and reaches the low noise effect.
Show by above principle analysis: the present invention has significantly alleviated the weight of compressor; Employing is coated with new structures such as the aluminium matter cylinder block of Teflon material and aluminum piston, can improve the gas transmission coefficient, reduces friction, improves refrigerating capacity and COP, has reduced compressor noise and vibration, really accomplishes energy saving and raw material, reduction noise.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; or design of the present invention and technological scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (6)
1. a Piston Refrigerant Compreessor comprises bent axle (1), connecting rod (2), piston (4) and cylinder block (5), it is characterized in that:
On the cylinder-bore inwall of described cylinder block (5), be provided with by the wear-resisting sprayfused coating (6) wear-resisting, that exotic material is made;
Perhaps on the surface that described piston (4) is gone up with the cylinder-bore of described cylinder block (5) cooperates, be provided with by the wear-resisting sprayfused coating (6) wear-resisting, that exotic material is made;
Perhaps on the cylinder-bore inwall of described cylinder block (5), on the surface that described piston (4) is gone up with the cylinder-bore of described cylinder block (5) cooperates, be equipped with by the wear-resisting sprayfused coating (6) wear-resisting, that exotic material is made.
2. according to the described Piston Refrigerant Compreessor of claim 1, it is characterized in that: the material of described wear-resisting sprayfused coating (6) is a teflon.
3. according to the described Piston Refrigerant Compreessor of claim 2, it is characterized in that: the thickness of described wear-resisting sprayfused coating (6) is 0.001～0.010mm.
4. according to claim 1 or 2 or 3 described Piston Refrigerant Compreessors, it is characterized in that: the axial length of the sealed end of described piston (4) is 10 ± 0.15mm.
5. according to claim 1 or 2 or 3 described Piston Refrigerant Compreessors, it is characterized in that: the bulk material of described cylinder block (5) is an aluminum alloy.
6. according to claim 1 or 2 or 3 described Piston Refrigerant Compreessors, it is characterized in that: the material of described piston (4) is an aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102378872A CN102269149A (en) | 2011-08-18 | 2011-08-18 | Piston refrigerant compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102378872A CN102269149A (en) | 2011-08-18 | 2011-08-18 | Piston refrigerant compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102269149A true CN102269149A (en) | 2011-12-07 |
Family
ID=45051549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102378872A Pending CN102269149A (en) | 2011-08-18 | 2011-08-18 | Piston refrigerant compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102269149A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536742A (en) * | 2012-01-13 | 2012-07-04 | 重庆建设摩托车股份有限公司 | Method for machining movable friction parts of air compressors |
| CN102619732A (en) * | 2012-04-24 | 2012-08-01 | 龙口市大川活塞有限公司 | Oil-free automobile air compressor |
| CN108343593A (en) * | 2017-01-22 | 2018-07-31 | 王毅 | Totally-enclosed reciprocating-piston freezer compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172906A (en) * | 1996-07-08 | 1998-02-11 | 株式会社丰田自动织机制作所 | Piston of compressor, coating method of piston and coating device |
| US6230498B1 (en) * | 1998-10-22 | 2001-05-15 | Inframetrics Inc. | Integrated cryocooler assembly with improved compressor performance |
| CN201627699U (en) * | 2009-11-09 | 2010-11-10 | 青岛光正机械设备制造有限公司 | Air compressor |
| CN101988490A (en) * | 2009-08-07 | 2011-03-23 | 苏州鸿本机械制造有限公司 | Improvement of miniature oil-free air compressor cylinder |
| CN201794748U (en) * | 2010-09-16 | 2011-04-13 | 浙江春晖空调压缩机有限公司 | Piston of automobile air condition compressor |
| CN202203078U (en) * | 2011-08-18 | 2012-04-25 | 芜湖欧宝机电有限公司 | Piston type refrigeration compressor |
-
2011
- 2011-08-18 CN CN2011102378872A patent/CN102269149A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172906A (en) * | 1996-07-08 | 1998-02-11 | 株式会社丰田自动织机制作所 | Piston of compressor, coating method of piston and coating device |
| US6230498B1 (en) * | 1998-10-22 | 2001-05-15 | Inframetrics Inc. | Integrated cryocooler assembly with improved compressor performance |
| CN101988490A (en) * | 2009-08-07 | 2011-03-23 | 苏州鸿本机械制造有限公司 | Improvement of miniature oil-free air compressor cylinder |
| CN201627699U (en) * | 2009-11-09 | 2010-11-10 | 青岛光正机械设备制造有限公司 | Air compressor |
| CN201794748U (en) * | 2010-09-16 | 2011-04-13 | 浙江春晖空调压缩机有限公司 | Piston of automobile air condition compressor |
| CN202203078U (en) * | 2011-08-18 | 2012-04-25 | 芜湖欧宝机电有限公司 | Piston type refrigeration compressor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536742A (en) * | 2012-01-13 | 2012-07-04 | 重庆建设摩托车股份有限公司 | Method for machining movable friction parts of air compressors |
| CN102619732A (en) * | 2012-04-24 | 2012-08-01 | 龙口市大川活塞有限公司 | Oil-free automobile air compressor |
| CN108343593A (en) * | 2017-01-22 | 2018-07-31 | 王毅 | Totally-enclosed reciprocating-piston freezer compressor |
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Application publication date: 20111207 |